summaryrefslogtreecommitdiffstats
path: root/vcl/skia
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--vcl/skia/README35
-rw-r--r--vcl/skia/SkiaHelper.cxx611
-rw-r--r--vcl/skia/gdiimpl.cxx1829
-rw-r--r--vcl/skia/salbmp.cxx819
-rw-r--r--vcl/skia/skia_blacklist_vulkan.xml37
-rw-r--r--vcl/skia/win/gdiimpl.cxx393
-rw-r--r--vcl/skia/x11/gdiimpl.cxx161
-rw-r--r--vcl/skia/x11/salvd.cxx86
-rw-r--r--vcl/skia/x11/textrender.cxx80
-rw-r--r--vcl/skia/zone.cxx76
10 files changed, 4127 insertions, 0 deletions
diff --git a/vcl/skia/README b/vcl/skia/README
new file mode 100644
index 000000000..f1248d90c
--- /dev/null
+++ b/vcl/skia/README
@@ -0,0 +1,35 @@
+This is code for using the Skia library as a drawing library in VCL backends.
+See external/skia for info on the library itself.
+
+Environment variables:
+======================
+
+See README.vars in the toplevel vcl/ directory. Note that many backends do not
+use Skia. E.g. on Linux it is necessary to also use SAL_USE_VCLPLUGIN=gen .
+
+There are also GUI options for controlling whether Skia is enabled.
+
+Skia drawing methods:
+=====================
+
+Skia supports several methods to draw:
+- Raster - CPU-based drawing (here primarily used for debugging)
+- Vulkan - Vulkan-based GPU drawing, this is the default
+
+There are more (OpenGL, Metal on Mac, etc.), but (as of now) they are not supported by VCL.
+
+GrContext sharing:
+==================
+
+We use Skia's sk_app::WindowContext class for creating surfaces for windows, that class
+takes care of the internals. But of offscreen drawing, we need an instance of class
+GrContext. There is sk_app::WindowContext::getGrContext(), but each instance creates
+its own GrContext, and apparently it does not work to mix them. Which means that
+for offscreen drawing we would need to know which window (and only that window)
+the contents will be eventually painted to, which is not possible (it may not even
+be known at the time).
+
+To solve this problem we patch sk_app::WindowContext to create just one GrContext object
+and share it between instances. Additionally, using sk_app::WindowContext::SharedGrContext
+it is possible to share it also for offscreen drawing, including keeping proper reference
+count.
diff --git a/vcl/skia/SkiaHelper.cxx b/vcl/skia/SkiaHelper.cxx
new file mode 100644
index 000000000..343ebc284
--- /dev/null
+++ b/vcl/skia/SkiaHelper.cxx
@@ -0,0 +1,611 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <vcl/skia/SkiaHelper.hxx>
+
+#if !HAVE_FEATURE_SKIA
+
+namespace SkiaHelper
+{
+bool isVCLSkiaEnabled() { return false; }
+
+} // namespace
+
+#else
+
+#include <rtl/bootstrap.hxx>
+#include <vcl/svapp.hxx>
+#include <desktop/crashreport.hxx>
+#include <officecfg/Office/Common.hxx>
+#include <watchdog.hxx>
+#include <skia/zone.hxx>
+#include <sal/log.hxx>
+#include <driverblocklist.hxx>
+#include <skia/utils.hxx>
+#include <config_folders.h>
+#include <osl/file.hxx>
+#include <tools/stream.hxx>
+#include <list>
+
+#include <SkCanvas.h>
+#include <SkPaint.h>
+#include <SkSurface.h>
+#include <SkGraphics.h>
+#include <skia_compiler.hxx>
+
+#ifdef DBG_UTIL
+#include <fstream>
+#endif
+
+namespace SkiaHelper
+{
+static OUString getBlacklistFile()
+{
+ OUString url("$BRAND_BASE_DIR/" LIBO_SHARE_FOLDER);
+ rtl::Bootstrap::expandMacros(url);
+
+ return url + "/skia/skia_blacklist_vulkan.xml";
+}
+
+static uint32_t driverVersion = 0;
+uint32_t vendorId = 0;
+
+static OUString versionAsString(uint32_t version)
+{
+ return OUString::number(version >> 22) + "." + OUString::number((version >> 12) & 0x3ff) + "."
+ + OUString::number(version & 0xfff);
+}
+
+static OUStringLiteral vendorAsString(uint32_t vendor)
+{
+ return DriverBlocklist::GetVendorNameFromId(vendor);
+}
+
+static OUString getCacheFolder()
+{
+ OUString url("${$BRAND_BASE_DIR/" LIBO_ETC_FOLDER
+ "/" SAL_CONFIGFILE("bootstrap") ":UserInstallation}/cache/");
+ rtl::Bootstrap::expandMacros(url);
+ osl::Directory::create(url);
+ return url;
+}
+
+static void writeToLog(SvStream& stream, const char* key, const char* value)
+{
+ stream.WriteCharPtr(key);
+ stream.WriteCharPtr(": ");
+ stream.WriteCharPtr(value);
+ stream.WriteChar('\n');
+}
+
+static void writeToLog(SvStream& stream, const char* key, const OUString& value)
+{
+ writeToLog(stream, key, OUStringToOString(value, RTL_TEXTENCODING_UTF8).getStr());
+}
+
+// Note that this function also logs system information about Vulkan.
+static bool isVulkanBlacklisted(const VkPhysicalDeviceProperties& props)
+{
+ static const char* const types[]
+ = { "other", "integrated", "discrete", "virtual", "cpu", "??" }; // VkPhysicalDeviceType
+ driverVersion = props.driverVersion;
+ vendorId = props.vendorID;
+ OUString vendorIdStr = "0x" + OUString::number(props.vendorID, 16);
+ OUString deviceIdStr = "0x" + OUString::number(props.deviceID, 16);
+ OUString driverVersionString = versionAsString(driverVersion);
+ OUString apiVersion = versionAsString(props.apiVersion);
+ const char* deviceType = types[std::min<unsigned>(props.deviceType, SAL_N_ELEMENTS(types) - 1)];
+
+ CrashReporter::addKeyValue("VulkanVendor", vendorIdStr, CrashReporter::AddItem);
+ CrashReporter::addKeyValue("VulkanDevice", deviceIdStr, CrashReporter::AddItem);
+ CrashReporter::addKeyValue("VulkanAPI", apiVersion, CrashReporter::AddItem);
+ CrashReporter::addKeyValue("VulkanDriver", driverVersionString, CrashReporter::AddItem);
+ CrashReporter::addKeyValue("VulkanDeviceType", OUString::createFromAscii(deviceType),
+ CrashReporter::AddItem);
+ CrashReporter::addKeyValue("VulkanDeviceName", OUString::createFromAscii(props.deviceName),
+ CrashReporter::Write);
+
+ SvFileStream logFile(getCacheFolder() + "/skia.log", StreamMode::WRITE | StreamMode::TRUNC);
+ writeToLog(logFile, "RenderMethod", "vulkan");
+ writeToLog(logFile, "Vendor", vendorIdStr);
+ writeToLog(logFile, "Device", deviceIdStr);
+ writeToLog(logFile, "API", apiVersion);
+ writeToLog(logFile, "Driver", driverVersionString);
+ writeToLog(logFile, "DeviceType", deviceType);
+ writeToLog(logFile, "DeviceName", props.deviceName);
+
+ SAL_INFO("vcl.skia",
+ "Vulkan API version: " << apiVersion << ", driver version: " << driverVersionString
+ << ", vendor: " << vendorIdStr << " ("
+ << vendorAsString(vendorId) << "), device: " << deviceIdStr
+ << ", type: " << deviceType << ", name: " << props.deviceName);
+ bool blacklisted
+ = DriverBlocklist::IsDeviceBlocked(getBlacklistFile(), DriverBlocklist::VersionType::Vulkan,
+ driverVersionString, vendorIdStr, deviceIdStr);
+ writeToLog(logFile, "Blacklisted", blacklisted ? "yes" : "no");
+ return blacklisted;
+}
+
+static void writeSkiaRasterInfo()
+{
+ SvFileStream logFile(getCacheFolder() + "/skia.log", StreamMode::WRITE | StreamMode::TRUNC);
+ writeToLog(logFile, "RenderMethod", "raster");
+ // Log compiler, Skia works best when compiled with Clang.
+ writeToLog(logFile, "Compiler", skia_compiler_name());
+}
+
+static sk_app::VulkanWindowContext::SharedGrContext getTemporaryGrContext();
+
+static void checkDeviceBlacklisted(bool blockDisable = false)
+{
+ static bool done = false;
+ if (!done)
+ {
+ SkiaZone zone;
+
+ switch (renderMethodToUse())
+ {
+ case RenderVulkan:
+ {
+ // First try if a GrContext already exists.
+ sk_app::VulkanWindowContext::SharedGrContext grContext
+ = sk_app::VulkanWindowContext::getSharedGrContext();
+ if (!grContext.getGrContext())
+ {
+ // This function is called from isVclSkiaEnabled(), which
+ // may be called when deciding which X11 visual to use,
+ // and that visual is normally needed when creating
+ // Skia's VulkanWindowContext, which is needed for the GrContext.
+ // Avoid the loop by creating a temporary GrContext
+ // that will use the default X11 visual (that shouldn't matter
+ // for just finding out information about Vulkan) and destroying
+ // the temporary context will clean up again.
+ grContext = getTemporaryGrContext();
+ }
+ bool blacklisted = true; // assume the worst
+ if (grContext.getGrContext()) // Vulkan was initialized properly
+ {
+ blacklisted = isVulkanBlacklisted(
+ sk_app::VulkanWindowContext::getPhysDeviceProperties());
+ SAL_INFO("vcl.skia", "Vulkan blacklisted: " << blacklisted);
+ }
+ else
+ SAL_INFO("vcl.skia", "Vulkan could not be initialized");
+ if (blacklisted && !blockDisable)
+ {
+ disableRenderMethod(RenderVulkan);
+ writeSkiaRasterInfo();
+ }
+ break;
+ }
+ case RenderRaster:
+ SAL_INFO("vcl.skia", "Using Skia raster mode");
+ writeSkiaRasterInfo();
+ return; // software, never blacklisted
+ }
+ done = true;
+ }
+}
+
+static bool skiaSupportedByBackend = false;
+static bool supportsVCLSkia()
+{
+ if (!skiaSupportedByBackend)
+ {
+ SAL_INFO("vcl.skia", "Skia not supported by VCL backend, disabling");
+ return false;
+ }
+ return getenv("SAL_DISABLESKIA") == nullptr;
+}
+
+bool isVCLSkiaEnabled()
+{
+ /**
+ * The !bSet part should only be called once! Changing the results in the same
+ * run will mix Skia and normal rendering.
+ */
+
+ static bool bSet = false;
+ static bool bEnable = false;
+ static bool bForceSkia = false;
+
+ // No hardware rendering, so no Skia
+ // TODO SKIA
+ if (Application::IsBitmapRendering())
+ return false;
+
+ if (bSet)
+ {
+ return bForceSkia || bEnable;
+ }
+
+ /*
+ * There are a number of cases that these environment variables cover:
+ * * SAL_FORCESKIA forces Skia if disabled by UI options or blacklisted
+ * * SAL_DISABLESKIA avoids the use of Skia regardless of any option
+ */
+
+ bSet = true;
+ bForceSkia = !!getenv("SAL_FORCESKIA") || officecfg::Office::Common::VCL::ForceSkia::get();
+
+ bool bRet = false;
+ bool bSupportsVCLSkia = supportsVCLSkia();
+ if (bForceSkia && bSupportsVCLSkia)
+ {
+ bRet = true;
+ SkGraphics::Init();
+ // don't actually block if blacklisted, but log it if enabled, and also get the vendor id
+ checkDeviceBlacklisted(true);
+ }
+ else if (getenv("SAL_FORCEGL"))
+ {
+ // Skia usage is checked before GL usage, so if GL is forced (and Skia is not), do not
+ // enable Skia in order to allow GL.
+ bRet = false;
+ }
+ else if (bSupportsVCLSkia)
+ {
+ static bool bEnableSkiaEnv = !!getenv("SAL_ENABLESKIA");
+
+ bEnable = bEnableSkiaEnv;
+
+ if (officecfg::Office::Common::VCL::UseSkia::get())
+ bEnable = true;
+
+ // Force disable in safe mode
+ if (Application::IsSafeModeEnabled())
+ bEnable = false;
+
+ if (bEnable)
+ {
+ SkGraphics::Init();
+ checkDeviceBlacklisted(); // switch to raster if driver is blacklisted
+ }
+
+ bRet = bEnable;
+ }
+
+ if (bRet)
+ WatchdogThread::start();
+
+ CrashReporter::addKeyValue("UseSkia", OUString::boolean(bRet), CrashReporter::Write);
+
+ return bRet;
+}
+
+static RenderMethod methodToUse = RenderRaster;
+
+static bool initRenderMethodToUse()
+{
+ if (const char* env = getenv("SAL_SKIA"))
+ {
+ if (strcmp(env, "raster") == 0)
+ {
+ methodToUse = RenderRaster;
+ return true;
+ }
+ if (strcmp(env, "vulkan") == 0)
+ {
+ methodToUse = RenderVulkan;
+ return true;
+ }
+ SAL_WARN("vcl.skia", "Unrecognized value of SAL_SKIA");
+ abort();
+ }
+ if (officecfg::Office::Common::VCL::ForceSkiaRaster::get())
+ {
+ methodToUse = RenderRaster;
+ return true;
+ }
+ methodToUse = RenderVulkan;
+ return true;
+}
+
+RenderMethod renderMethodToUse()
+{
+ static bool methodToUseInited = initRenderMethodToUse();
+ if (methodToUseInited) // Used just to ensure thread-safe one-time init.
+ return methodToUse;
+ abort();
+}
+
+void disableRenderMethod(RenderMethod method)
+{
+ if (renderMethodToUse() != method)
+ return;
+ // Choose a fallback, right now always raster.
+ methodToUse = RenderRaster;
+}
+
+static sk_app::VulkanWindowContext::SharedGrContext* sharedGrContext;
+
+static std::unique_ptr<sk_app::WindowContext> (*createVulkanWindowContextFunction)(bool) = nullptr;
+static void setCreateVulkanWindowContext(std::unique_ptr<sk_app::WindowContext> (*function)(bool))
+{
+ createVulkanWindowContextFunction = function;
+}
+
+GrContext* getSharedGrContext()
+{
+ SkiaZone zone;
+ assert(renderMethodToUse() == RenderVulkan);
+ if (sharedGrContext)
+ return sharedGrContext->getGrContext();
+ // TODO mutex?
+ // Set up the shared GrContext from Skia's (patched) VulkanWindowContext, if it's been
+ // already set up.
+ sk_app::VulkanWindowContext::SharedGrContext context
+ = sk_app::VulkanWindowContext::getSharedGrContext();
+ GrContext* grContext = context.getGrContext();
+ if (grContext)
+ {
+ sharedGrContext = new sk_app::VulkanWindowContext::SharedGrContext(context);
+ return grContext;
+ }
+ static bool done = false;
+ if (done)
+ return nullptr;
+ done = true;
+ if (createVulkanWindowContextFunction == nullptr)
+ return nullptr; // not initialized properly (e.g. used from a VCL backend with no Skia support)
+ std::unique_ptr<sk_app::WindowContext> tmpContext = createVulkanWindowContextFunction(false);
+ // Set up using the shared context created by the call above, if successful.
+ context = sk_app::VulkanWindowContext::getSharedGrContext();
+ grContext = context.getGrContext();
+ if (grContext)
+ {
+ sharedGrContext = new sk_app::VulkanWindowContext::SharedGrContext(context);
+ return grContext;
+ }
+ disableRenderMethod(RenderVulkan);
+ return nullptr;
+}
+
+static sk_app::VulkanWindowContext::SharedGrContext getTemporaryGrContext()
+{
+ if (createVulkanWindowContextFunction == nullptr)
+ return sk_app::VulkanWindowContext::SharedGrContext();
+ std::unique_ptr<sk_app::WindowContext> tmpContext = createVulkanWindowContextFunction(true);
+ // Set up using the shared context created by the call above, if successful.
+ return sk_app::VulkanWindowContext::getSharedGrContext();
+}
+
+sk_sp<SkSurface> createSkSurface(int width, int height, SkColorType type)
+{
+ SkiaZone zone;
+ assert(type == kN32_SkColorType || type == kAlpha_8_SkColorType);
+ sk_sp<SkSurface> surface;
+ switch (SkiaHelper::renderMethodToUse())
+ {
+ case SkiaHelper::RenderVulkan:
+ {
+ if (GrContext* grContext = getSharedGrContext())
+ {
+ surface = SkSurface::MakeRenderTarget(
+ grContext, SkBudgeted::kNo,
+ SkImageInfo::Make(width, height, type, kPremul_SkAlphaType));
+ if (surface)
+ {
+#ifdef DBG_UTIL
+ prefillSurface(surface);
+#endif
+ return surface;
+ }
+ SAL_WARN("vcl.skia",
+ "cannot create Vulkan GPU offscreen surface, falling back to Raster");
+ }
+ break;
+ }
+ default:
+ break;
+ }
+ // Create raster surface as a fallback.
+ surface = SkSurface::MakeRaster(SkImageInfo::Make(width, height, type, kPremul_SkAlphaType));
+ assert(surface);
+ if (surface)
+ {
+#ifdef DBG_UTIL
+ prefillSurface(surface);
+#endif
+ return surface;
+ }
+ // In non-debug builds we could return SkSurface::MakeNull() and try to cope with the situation,
+ // but that can lead to unnoticed data loss, so better fail clearly.
+ abort();
+}
+
+sk_sp<SkImage> createSkImage(const SkBitmap& bitmap)
+{
+ SkiaZone zone;
+ assert(bitmap.colorType() == kN32_SkColorType || bitmap.colorType() == kAlpha_8_SkColorType);
+ switch (SkiaHelper::renderMethodToUse())
+ {
+ case SkiaHelper::RenderVulkan:
+ {
+ if (GrContext* grContext = getSharedGrContext())
+ {
+ sk_sp<SkSurface> surface = SkSurface::MakeRenderTarget(
+ grContext, SkBudgeted::kNo, bitmap.info().makeAlphaType(kPremul_SkAlphaType));
+ if (surface)
+ {
+ SkPaint paint;
+ paint.setBlendMode(SkBlendMode::kSrc); // set as is, including alpha
+ surface->getCanvas()->drawBitmap(bitmap, 0, 0, &paint);
+ return makeCheckedImageSnapshot(surface);
+ }
+ // Try to fall back in non-debug builds.
+ SAL_WARN("vcl.skia",
+ "cannot create Vulkan GPU offscreen surface, falling back to Raster");
+ }
+ break;
+ }
+ default:
+ break;
+ }
+ // Create raster image as a fallback.
+ sk_sp<SkImage> image = SkImage::MakeFromBitmap(bitmap);
+ assert(image);
+ return image;
+}
+
+sk_sp<SkImage> makeCheckedImageSnapshot(sk_sp<SkSurface> surface)
+{
+ sk_sp<SkImage> ret = surface->makeImageSnapshot();
+ assert(ret);
+ if (ret)
+ return ret;
+ abort();
+}
+
+sk_sp<SkImage> makeCheckedImageSnapshot(sk_sp<SkSurface> surface, const SkIRect& bounds)
+{
+ sk_sp<SkImage> ret = surface->makeImageSnapshot(bounds);
+ assert(ret);
+ if (ret)
+ return ret;
+ abort();
+}
+
+namespace
+{
+// Image cache, for saving results of complex operations such as drawTransformedBitmap().
+struct ImageCacheItem
+{
+ OString key;
+ sk_sp<SkImage> image;
+ int size; // cost of the item
+};
+} //namespace
+
+// LRU cache, last item is the least recently used. Hopefully there won't be that many items
+// to require a hash/map. Using o3tl::lru_cache would be simpler, but it doesn't support
+// calculating cost of each item.
+static std::list<ImageCacheItem>* imageCache = nullptr;
+static int imageCacheSize = 0; // sum of all ImageCacheItem.size
+
+void addCachedImage(const OString& key, sk_sp<SkImage> image)
+{
+ static bool disabled = getenv("SAL_DISABLE_SKIA_CACHE") != nullptr;
+ if (disabled)
+ return;
+ if (imageCache == nullptr)
+ imageCache = new std::list<ImageCacheItem>;
+ int size = image->width() * image->height()
+ * SkColorTypeBytesPerPixel(image->imageInfo().colorType());
+ imageCache->push_front({ key, image, size });
+ imageCacheSize += size;
+ SAL_INFO("vcl.skia.trace", "addcachedimage " << image << " :" << size << "/" << imageCacheSize);
+ const int MAX_CACHE_SIZE = 4 * 1000 * 1000 * 4; // 4x 1000px 32bpp images, 16MiB
+ while (imageCacheSize > MAX_CACHE_SIZE)
+ {
+ assert(!imageCache->empty());
+ imageCacheSize -= imageCache->back().size;
+ SAL_INFO("vcl.skia.trace",
+ "least used removal " << image << ":" << imageCache->back().size);
+ imageCache->pop_back();
+ }
+}
+
+sk_sp<SkImage> findCachedImage(const OString& key)
+{
+ if (imageCache != nullptr)
+ {
+ for (auto it = imageCache->begin(); it != imageCache->end(); ++it)
+ {
+ if (it->key == key)
+ {
+ sk_sp<SkImage> ret = it->image;
+ SAL_INFO("vcl.skia.trace",
+ "findcachedimage " << key << " : " << it->image << " found");
+ imageCache->splice(imageCache->begin(), *imageCache, it);
+ return ret;
+ }
+ }
+ }
+ SAL_INFO("vcl.skia.trace", "findcachedimage " << key << " not found");
+ return nullptr;
+}
+
+void removeCachedImage(sk_sp<SkImage> image)
+{
+ if (imageCache == nullptr)
+ return;
+ for (auto it = imageCache->begin(); it != imageCache->end();)
+ {
+ if (it->image == image)
+ {
+ imageCacheSize -= it->size;
+ assert(imageCacheSize >= 0);
+ it = imageCache->erase(it);
+ }
+ else
+ ++it;
+ }
+}
+
+void cleanup()
+{
+ delete sharedGrContext;
+ sharedGrContext = nullptr;
+ delete imageCache;
+ imageCache = nullptr;
+ imageCacheSize = 0;
+}
+
+// Skia should not be used from VCL backends that do not actually support it, as there will be setup missing.
+// The code here (that is in the vcl lib) needs a function for creating Vulkan context that is
+// usually available only in the backend libs.
+void prepareSkia(std::unique_ptr<sk_app::WindowContext> (*createVulkanWindowContext)(bool))
+{
+ setCreateVulkanWindowContext(createVulkanWindowContext);
+ skiaSupportedByBackend = true;
+}
+
+#ifdef DBG_UTIL
+void prefillSurface(sk_sp<SkSurface>& surface)
+{
+ // Pre-fill the surface with deterministic garbage.
+ SkBitmap bitmap;
+ bitmap.allocN32Pixels(2, 2);
+ SkPMColor* scanline;
+ scanline = bitmap.getAddr32(0, 0);
+ *scanline++ = SkPreMultiplyARGB(0xFF, 0xBF, 0x80, 0x40);
+ *scanline++ = SkPreMultiplyARGB(0xFF, 0x40, 0x80, 0xBF);
+ scanline = bitmap.getAddr32(0, 1);
+ *scanline++ = SkPreMultiplyARGB(0xFF, 0xE3, 0x5C, 0x13);
+ *scanline++ = SkPreMultiplyARGB(0xFF, 0x13, 0x5C, 0xE3);
+ bitmap.setImmutable();
+ SkPaint paint;
+ paint.setBlendMode(SkBlendMode::kSrc); // set as is, including alpha
+ paint.setShader(bitmap.makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat));
+ surface->getCanvas()->drawPaint(paint);
+}
+
+void dump(const SkBitmap& bitmap, const char* file) { dump(SkImage::MakeFromBitmap(bitmap), file); }
+
+void dump(const sk_sp<SkSurface>& surface, const char* file)
+{
+ surface->getCanvas()->flush();
+ dump(makeCheckedImageSnapshot(surface), file);
+}
+
+void dump(const sk_sp<SkImage>& image, const char* file)
+{
+ sk_sp<SkData> data = image->encodeToData();
+ std::ofstream ostream(file, std::ios::binary);
+ ostream.write(static_cast<const char*>(data->data()), data->size());
+}
+
+#endif
+
+} // namespace
+
+#endif // HAVE_FEATURE_SKIA
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/skia/gdiimpl.cxx b/vcl/skia/gdiimpl.cxx
new file mode 100644
index 000000000..bd497d7f8
--- /dev/null
+++ b/vcl/skia/gdiimpl.cxx
@@ -0,0 +1,1829 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <skia/gdiimpl.hxx>
+
+#include <salgdi.hxx>
+#include <skia/salbmp.hxx>
+#include <vcl/idle.hxx>
+#include <vcl/svapp.hxx>
+#include <vcl/lazydelete.hxx>
+#include <vcl/skia/SkiaHelper.hxx>
+#include <skia/utils.hxx>
+#include <skia/zone.hxx>
+
+#include <SkCanvas.h>
+#include <SkPath.h>
+#include <SkRegion.h>
+#include <SkDashPathEffect.h>
+#include <GrBackendSurface.h>
+#include <SkTextBlob.h>
+#include <SkRSXform.h>
+
+#include <numeric>
+#include <basegfx/polygon/b2dpolygontools.hxx>
+#include <basegfx/polygon/b2dpolypolygontools.hxx>
+#include <basegfx/polygon/b2dpolypolygoncutter.hxx>
+#include <o3tl/sorted_vector.hxx>
+
+namespace
+{
+// Create Skia Path from B2DPolygon
+// Note that polygons generally have the complication that when used
+// for area (fill) operations they usually miss the right-most and
+// bottom-most line of pixels of the bounding rectangle (see
+// https://lists.freedesktop.org/archives/libreoffice/2019-November/083709.html).
+// So be careful with rectangle->polygon conversions (generally avoid them).
+void addPolygonToPath(const basegfx::B2DPolygon& rPolygon, SkPath& rPath,
+ bool* hasOnlyOrthogonal = nullptr)
+{
+ const sal_uInt32 nPointCount(rPolygon.count());
+
+ if (nPointCount <= 1)
+ return;
+
+ const bool bClosePath(rPolygon.isClosed());
+ const bool bHasCurves(rPolygon.areControlPointsUsed());
+
+ bool bFirst = true;
+
+ sal_uInt32 nCurrentIndex = 0;
+ sal_uInt32 nPreviousIndex = nPointCount - 1;
+
+ basegfx::B2DPoint aCurrentPoint;
+ basegfx::B2DPoint aPreviousPoint;
+
+ for (sal_uInt32 nIndex = 0; nIndex <= nPointCount; nIndex++)
+ {
+ if (nIndex == nPointCount && !bClosePath)
+ continue;
+
+ // Make sure we loop the last point to first point
+ nCurrentIndex = nIndex % nPointCount;
+ aCurrentPoint = rPolygon.getB2DPoint(nCurrentIndex);
+
+ if (bFirst)
+ {
+ rPath.moveTo(aCurrentPoint.getX(), aCurrentPoint.getY());
+ bFirst = false;
+ }
+ else if (!bHasCurves)
+ {
+ rPath.lineTo(aCurrentPoint.getX(), aCurrentPoint.getY());
+ // If asked for, check whether the polygon has a line that is not
+ // strictly horizontal or vertical.
+ if (hasOnlyOrthogonal != nullptr && aCurrentPoint.getX() != aPreviousPoint.getX()
+ && aCurrentPoint.getY() != aPreviousPoint.getY())
+ *hasOnlyOrthogonal = false;
+ }
+ else
+ {
+ basegfx::B2DPoint aPreviousControlPoint = rPolygon.getNextControlPoint(nPreviousIndex);
+ basegfx::B2DPoint aCurrentControlPoint = rPolygon.getPrevControlPoint(nCurrentIndex);
+
+ if (aPreviousControlPoint.equal(aPreviousPoint))
+ {
+ aPreviousControlPoint
+ = aPreviousPoint + ((aPreviousControlPoint - aCurrentPoint) * 0.0005);
+ }
+
+ if (aCurrentControlPoint.equal(aCurrentPoint))
+ {
+ aCurrentControlPoint
+ = aCurrentPoint + ((aCurrentControlPoint - aPreviousPoint) * 0.0005);
+ }
+ rPath.cubicTo(aPreviousControlPoint.getX(), aPreviousControlPoint.getY(),
+ aCurrentControlPoint.getX(), aCurrentControlPoint.getY(),
+ aCurrentPoint.getX(), aCurrentPoint.getY());
+ if (hasOnlyOrthogonal != nullptr)
+ *hasOnlyOrthogonal = false;
+ }
+ aPreviousPoint = aCurrentPoint;
+ nPreviousIndex = nCurrentIndex;
+ }
+ if (bClosePath)
+ {
+ rPath.close();
+ }
+}
+
+void addPolyPolygonToPath(const basegfx::B2DPolyPolygon& rPolyPolygon, SkPath& rPath,
+ bool* hasOnlyOrthogonal = nullptr)
+{
+ const sal_uInt32 nPolygonCount(rPolyPolygon.count());
+
+ if (nPolygonCount == 0)
+ return;
+
+ for (const auto& rPolygon : rPolyPolygon)
+ {
+ addPolygonToPath(rPolygon, rPath, hasOnlyOrthogonal);
+ }
+}
+
+// Check if the given polygon contains a straight line. If not, it consists
+// solely of curves.
+bool polygonContainsLine(const basegfx::B2DPolyPolygon& rPolyPolygon)
+{
+ if (!rPolyPolygon.areControlPointsUsed())
+ return true; // no curves at all
+ for (const auto& rPolygon : rPolyPolygon)
+ {
+ const sal_uInt32 nPointCount(rPolygon.count());
+ bool bFirst = true;
+
+ const bool bClosePath(rPolygon.isClosed());
+
+ sal_uInt32 nCurrentIndex = 0;
+ sal_uInt32 nPreviousIndex = nPointCount - 1;
+
+ basegfx::B2DPoint aCurrentPoint;
+ basegfx::B2DPoint aPreviousPoint;
+
+ for (sal_uInt32 nIndex = 0; nIndex <= nPointCount; nIndex++)
+ {
+ if (nIndex == nPointCount && !bClosePath)
+ continue;
+
+ // Make sure we loop the last point to first point
+ nCurrentIndex = nIndex % nPointCount;
+ if (bFirst)
+ bFirst = false;
+ else
+ {
+ basegfx::B2DPoint aPreviousControlPoint
+ = rPolygon.getNextControlPoint(nPreviousIndex);
+ basegfx::B2DPoint aCurrentControlPoint
+ = rPolygon.getPrevControlPoint(nCurrentIndex);
+
+ if (aPreviousControlPoint.equal(aPreviousPoint)
+ && aCurrentControlPoint.equal(aCurrentPoint))
+ {
+ return true; // found a straight line
+ }
+ }
+ aPreviousPoint = aCurrentPoint;
+ nPreviousIndex = nCurrentIndex;
+ }
+ }
+ return false; // no straight line found
+}
+
+SkColor toSkColor(Color color)
+{
+ return SkColorSetARGB(255 - color.GetTransparency(), color.GetRed(), color.GetGreen(),
+ color.GetBlue());
+}
+
+SkColor toSkColorWithTransparency(Color aColor, double fTransparency)
+{
+ return SkColorSetA(toSkColor(aColor), 255 * (1.0 - fTransparency));
+}
+
+Color fromSkColor(SkColor color)
+{
+ return Color(255 - SkColorGetA(color), SkColorGetR(color), SkColorGetG(color),
+ SkColorGetB(color));
+}
+
+// returns true if the source or destination rectangles are invalid
+bool checkInvalidSourceOrDestination(SalTwoRect const& rPosAry)
+{
+ return rPosAry.mnSrcWidth <= 0 || rPosAry.mnSrcHeight <= 0 || rPosAry.mnDestWidth <= 0
+ || rPosAry.mnDestHeight <= 0;
+}
+
+} // end anonymous namespace
+
+// Class that triggers flushing the backing buffer when idle.
+class SkiaFlushIdle : public Idle
+{
+ SkiaSalGraphicsImpl* mpGraphics;
+#ifndef NDEBUG
+ char* debugname;
+#endif
+
+public:
+ explicit SkiaFlushIdle(SkiaSalGraphicsImpl* pGraphics)
+ : Idle(get_debug_name(pGraphics))
+ , mpGraphics(pGraphics)
+ {
+ // We don't want to be swapping before we've painted.
+ SetPriority(TaskPriority::POST_PAINT);
+ }
+#ifndef NDEBUG
+ virtual ~SkiaFlushIdle() { free(debugname); }
+ const char* get_debug_name(SkiaSalGraphicsImpl* pGraphics)
+ {
+ // Idle keeps just a pointer, so we need to store the string
+ debugname = strdup(
+ OString("skia idle 0x" + OString::number(reinterpret_cast<sal_uIntPtr>(pGraphics), 16))
+ .getStr());
+ return debugname;
+ }
+#else
+ const char* get_debug_name(SkiaSalGraphicsImpl*) { return "skia idle"; }
+#endif
+
+ virtual void Invoke() override
+ {
+ mpGraphics->performFlush();
+ Stop();
+ SetPriority(TaskPriority::HIGHEST);
+ }
+};
+
+SkiaSalGraphicsImpl::SkiaSalGraphicsImpl(SalGraphics& rParent, SalGeometryProvider* pProvider)
+ : mParent(rParent)
+ , mProvider(pProvider)
+ , mIsGPU(false)
+ , mLineColor(SALCOLOR_NONE)
+ , mFillColor(SALCOLOR_NONE)
+ , mXorMode(false)
+ , mFlush(new SkiaFlushIdle(this))
+{
+}
+
+SkiaSalGraphicsImpl::~SkiaSalGraphicsImpl()
+{
+ assert(!mSurface);
+ assert(!mWindowContext);
+}
+
+void SkiaSalGraphicsImpl::Init() {}
+
+void SkiaSalGraphicsImpl::createSurface()
+{
+ SkiaZone zone;
+ if (isOffscreen())
+ createOffscreenSurface();
+ else
+ createWindowSurface();
+ mSurface->getCanvas()->save(); // see SetClipRegion()
+ mClipRegion = vcl::Region(tools::Rectangle(0, 0, GetWidth(), GetHeight()));
+
+ // We don't want to be swapping before we've painted.
+ mFlush->Stop();
+ mFlush->SetPriority(TaskPriority::POST_PAINT);
+}
+
+void SkiaSalGraphicsImpl::createWindowSurface(bool forceRaster)
+{
+ SkiaZone zone;
+ assert(!isOffscreen());
+ assert(!mSurface);
+ assert(!mWindowContext);
+ createWindowContext(forceRaster);
+ if (mWindowContext)
+ mSurface = mWindowContext->getBackbufferSurface();
+ if (!mSurface)
+ {
+ switch (SkiaHelper::renderMethodToUse())
+ {
+ case SkiaHelper::RenderVulkan:
+ SAL_WARN("vcl.skia",
+ "cannot create Vulkan GPU window surface, falling back to Raster");
+ destroySurface(); // destroys also WindowContext
+ return createWindowSurface(true); // try again
+ case SkiaHelper::RenderRaster:
+ abort(); // This should not really happen, do not even try to cope with it.
+ }
+ }
+ mIsGPU = mSurface->getCanvas()->getGrContext() != nullptr;
+#ifdef DBG_UTIL
+ SkiaHelper::prefillSurface(mSurface);
+#endif
+}
+
+void SkiaSalGraphicsImpl::createOffscreenSurface()
+{
+ SkiaZone zone;
+ assert(isOffscreen());
+ assert(!mSurface);
+ assert(!mWindowContext);
+ // When created (especially on Windows), Init() gets called with size (0,0), which is invalid size
+ // for Skia. May happen also in rare cases such as shutting down (tdf#131939).
+ int width = std::max(1, GetWidth());
+ int height = std::max(1, GetHeight());
+ switch (SkiaHelper::renderMethodToUse())
+ {
+ case SkiaHelper::RenderVulkan:
+ {
+ if (SkiaHelper::getSharedGrContext())
+ {
+ mSurface = SkiaHelper::createSkSurface(width, height);
+ if (mSurface)
+ {
+ mIsGPU = mSurface->getCanvas()->getGrContext() != nullptr;
+ return;
+ }
+ }
+ break;
+ }
+ default:
+ break;
+ }
+ // Create raster surface as a fallback.
+ mSurface = SkiaHelper::createSkSurface(width, height);
+ assert(mSurface);
+ assert(!mSurface->getCanvas()->getGrContext()); // is not GPU-backed
+ mIsGPU = false;
+}
+
+void SkiaSalGraphicsImpl::destroySurface()
+{
+ SkiaZone zone;
+ if (mSurface)
+ {
+ // check setClipRegion() invariant
+ assert(mSurface->getCanvas()->getSaveCount() == 2);
+ // if this fails, something forgot to use SkAutoCanvasRestore
+ assert(mSurface->getCanvas()->getTotalMatrix().isIdentity());
+ }
+ // If we use e.g. Vulkan, we must destroy the surface before the context,
+ // otherwise destroying the surface will reference the context. This is
+ // handled by calling destroySurface() before destroying the context.
+ // However we also need to flush the surface before destroying it,
+ // otherwise when destroying the context later there still could be queued
+ // commands referring to the surface data. This is probably a Skia bug,
+ // but work around it here.
+ if (mSurface)
+ mSurface->flushAndSubmit();
+ mSurface.reset();
+ mWindowContext.reset();
+ mIsGPU = false;
+}
+
+void SkiaSalGraphicsImpl::DeInit() { destroySurface(); }
+
+void SkiaSalGraphicsImpl::preDraw()
+{
+ assert(comphelper::SolarMutex::get()->IsCurrentThread());
+ SkiaZone::enter(); // matched in postDraw()
+ checkSurface();
+ checkPendingDrawing();
+}
+
+void SkiaSalGraphicsImpl::postDraw()
+{
+ scheduleFlush();
+ SkiaZone::leave(); // matched in preDraw()
+ // If there's a problem with the GPU context, abort.
+ if (GrContext* context = mSurface->getCanvas()->getGrContext())
+ {
+ // Running out of memory on the GPU technically could be possibly recoverable,
+ // but we don't know the exact status of the surface (and what has or has not been drawn to it),
+ // so in practice this is unrecoverable without possible data loss.
+ if (context->oomed())
+ {
+ SAL_WARN("vcl.skia", "GPU context has run out of memory, aborting.");
+ abort();
+ }
+ // Unrecoverable problem.
+ if (context->abandoned())
+ {
+ SAL_WARN("vcl.skia", "GPU context has been abandoned, aborting.");
+ abort();
+ }
+ }
+}
+
+void SkiaSalGraphicsImpl::scheduleFlush()
+{
+ if (!isOffscreen())
+ {
+ if (!Application::IsInExecute())
+ performFlush(); // otherwise nothing would trigger idle rendering
+ else if (!mFlush->IsActive())
+ mFlush->Start();
+ }
+}
+
+// VCL can sometimes resize us without telling us, update the surface if needed.
+// Also create the surface on demand if it has not been created yet (it is a waste
+// to create it in Init() if it gets recreated later anyway).
+void SkiaSalGraphicsImpl::checkSurface()
+{
+ if (!mSurface)
+ {
+ createSurface();
+ SAL_INFO("vcl.skia.trace",
+ "create(" << this << "): " << Size(mSurface->width(), mSurface->height()));
+ }
+ else if (GetWidth() != mSurface->width() || GetHeight() != mSurface->height())
+ {
+ if (avoidRecreateByResize())
+ return;
+
+ if (!GetWidth() || !GetHeight())
+ {
+ SAL_WARN("vcl.skia", "recreate(" << this << "): can't create empty surface "
+ << Size(GetWidth(), GetHeight())
+ << " => keeping old one!");
+ return;
+ }
+
+ {
+ Size oldSize(mSurface->width(), mSurface->height());
+ // Recreating a surface means that the old SkSurface contents will be lost.
+ // But if a window has been resized the windowing system may send repaint events
+ // only for changed parts and VCL would not repaint the whole area, assuming
+ // that some parts have not changed (this is what seems to cause tdf#131952).
+ // So carry over the old contents for windows, even though generally everything
+ // will be usually repainted anyway.
+ sk_sp<SkImage> snapshot;
+ if (!isOffscreen())
+ {
+ flushDrawing();
+ snapshot = SkiaHelper::makeCheckedImageSnapshot(mSurface);
+ }
+
+ destroySurface();
+ createSurface();
+
+ if (snapshot)
+ {
+ SkPaint paint;
+ paint.setBlendMode(SkBlendMode::kSrc); // copy as is
+ mSurface->getCanvas()->drawImage(snapshot, 0, 0, &paint);
+ }
+ SAL_INFO("vcl.skia.trace", "recreate(" << this << "): old " << oldSize << " new "
+ << Size(mSurface->width(), mSurface->height())
+ << " requested "
+ << Size(GetWidth(), GetHeight()));
+ }
+ }
+}
+
+void SkiaSalGraphicsImpl::flushDrawing()
+{
+ if (!mSurface)
+ return;
+ checkPendingDrawing();
+ if (mXorMode)
+ applyXor();
+ mSurface->flushAndSubmit();
+}
+
+bool SkiaSalGraphicsImpl::setClipRegion(const vcl::Region& region)
+{
+ if (mClipRegion == region)
+ return true;
+ SkiaZone zone;
+ checkPendingDrawing();
+ checkSurface();
+ mClipRegion = region;
+ SAL_INFO("vcl.skia.trace", "setclipregion(" << this << "): " << region);
+ SkCanvas* canvas = mSurface->getCanvas();
+ // SkCanvas::clipRegion() can only further reduce the clip region,
+ // but we need to set the given region, which may extend it.
+ // So handle that by always having the full clip region saved on the stack
+ // and always go back to that. SkCanvas::restore() only affects the clip
+ // and the matrix.
+ assert(canvas->getSaveCount() == 2); // = there is just one save()
+ canvas->restore();
+ canvas->save();
+ setCanvasClipRegion(canvas, region);
+ return true;
+}
+
+void SkiaSalGraphicsImpl::setCanvasClipRegion(SkCanvas* canvas, const vcl::Region& region)
+{
+ SkiaZone zone;
+ SkPath path;
+ // Always use region rectangles, regardless of what the region uses internally.
+ // That's what other VCL backends do, and trying to use addPolyPolygonToPath()
+ // in case a polygon is used leads to off-by-one errors such as tdf#133208.
+ RectangleVector rectangles;
+ region.GetRegionRectangles(rectangles);
+ for (const tools::Rectangle& rectangle : rectangles)
+ path.addRect(SkRect::MakeXYWH(rectangle.getX(), rectangle.getY(), rectangle.GetWidth(),
+ rectangle.GetHeight()));
+ path.setFillType(SkPathFillType::kEvenOdd);
+ canvas->clipPath(path);
+}
+
+void SkiaSalGraphicsImpl::ResetClipRegion()
+{
+ setClipRegion(vcl::Region(tools::Rectangle(0, 0, GetWidth(), GetHeight())));
+}
+
+const vcl::Region& SkiaSalGraphicsImpl::getClipRegion() const { return mClipRegion; }
+
+sal_uInt16 SkiaSalGraphicsImpl::GetBitCount() const { return 32; }
+
+long SkiaSalGraphicsImpl::GetGraphicsWidth() const { return GetWidth(); }
+
+void SkiaSalGraphicsImpl::SetLineColor()
+{
+ checkPendingDrawing();
+ mLineColor = SALCOLOR_NONE;
+}
+
+void SkiaSalGraphicsImpl::SetLineColor(Color nColor)
+{
+ checkPendingDrawing();
+ mLineColor = nColor;
+}
+
+void SkiaSalGraphicsImpl::SetFillColor()
+{
+ checkPendingDrawing();
+ mFillColor = SALCOLOR_NONE;
+}
+
+void SkiaSalGraphicsImpl::SetFillColor(Color nColor)
+{
+ checkPendingDrawing();
+ mFillColor = nColor;
+}
+
+void SkiaSalGraphicsImpl::SetXORMode(bool set, bool)
+{
+ if (mXorMode == set)
+ return;
+ checkPendingDrawing();
+ SAL_INFO("vcl.skia.trace", "setxormode(" << this << "): " << set);
+ if (set)
+ mXorRegion.setEmpty();
+ else
+ applyXor();
+ mXorMode = set;
+}
+
+SkCanvas* SkiaSalGraphicsImpl::getXorCanvas()
+{
+ SkiaZone zone;
+ assert(mXorMode);
+ // Skia does not implement xor drawing, so we need to handle it manually by redirecting
+ // to a temporary SkBitmap and then doing the xor operation on the data ourselves.
+ // There's no point in using SkSurface for GPU, we'd immediately need to get the pixels back.
+ if (!mXorCanvas)
+ {
+ // Use unpremultiplied alpha (see xor applying in applyXor()).
+ if (!mXorBitmap.tryAllocPixels(mSurface->imageInfo().makeAlphaType(kUnpremul_SkAlphaType)))
+ abort();
+ mXorBitmap.eraseARGB(0, 0, 0, 0);
+ mXorCanvas = std::make_unique<SkCanvas>(mXorBitmap);
+ setCanvasClipRegion(mXorCanvas.get(), mClipRegion);
+ }
+ return mXorCanvas.get();
+}
+
+void SkiaSalGraphicsImpl::applyXor()
+{
+ // Apply the result from the temporary bitmap manually. This is indeed
+ // slow, but it doesn't seem to be needed often and is optimized
+ // in each operation by extending mXorRegion with the area that should be
+ // updated.
+ assert(mXorMode);
+ if (!mSurface || !mXorCanvas
+ || !mXorRegion.op(SkIRect::MakeXYWH(0, 0, mSurface->width(), mSurface->height()),
+ SkRegion::kIntersect_Op))
+ {
+ mXorRegion.setEmpty();
+ return;
+ }
+ SAL_INFO("vcl.skia.trace", "applyxor(" << this << "): " << mXorRegion);
+ // Copy the surface contents to another pixmap.
+ SkBitmap surfaceBitmap;
+ // Use unpremultiplied alpha format, so that we do not have to do the conversions to get
+ // the RGB and back (Skia will do it when converting, but it'll be presumably faster at it).
+ if (!surfaceBitmap.tryAllocPixels(mSurface->imageInfo().makeAlphaType(kUnpremul_SkAlphaType)))
+ abort();
+ SkPaint paint;
+ paint.setBlendMode(SkBlendMode::kSrc); // copy as is
+ SkCanvas canvas(surfaceBitmap);
+ canvas.drawImageRect(SkiaHelper::makeCheckedImageSnapshot(mSurface), mXorRegion.getBounds(),
+ SkRect::Make(mXorRegion.getBounds()), &paint);
+ // xor to surfaceBitmap
+ assert(surfaceBitmap.info().alphaType() == kUnpremul_SkAlphaType);
+ assert(mXorBitmap.info().alphaType() == kUnpremul_SkAlphaType);
+ assert(surfaceBitmap.bytesPerPixel() == 4);
+ assert(mXorBitmap.bytesPerPixel() == 4);
+ for (SkRegion::Iterator it(mXorRegion); !it.done(); it.next())
+ {
+ for (int y = it.rect().top(); y < it.rect().bottom(); ++y)
+ {
+ uint8_t* data = static_cast<uint8_t*>(surfaceBitmap.getAddr(it.rect().x(), y));
+ const uint8_t* xordata = static_cast<uint8_t*>(mXorBitmap.getAddr(it.rect().x(), y));
+ for (int x = 0; x < it.rect().width(); ++x)
+ {
+ *data++ ^= *xordata++;
+ *data++ ^= *xordata++;
+ *data++ ^= *xordata++;
+ // alpha is not xor-ed
+ data++;
+ xordata++;
+ }
+ }
+ }
+ surfaceBitmap.notifyPixelsChanged();
+ mSurface->getCanvas()->drawBitmapRect(surfaceBitmap, mXorRegion.getBounds(),
+ SkRect::Make(mXorRegion.getBounds()), &paint);
+ mXorCanvas.reset();
+ mXorBitmap.reset();
+ mXorRegion.setEmpty();
+}
+
+void SkiaSalGraphicsImpl::SetROPLineColor(SalROPColor nROPColor)
+{
+ checkPendingDrawing();
+ switch (nROPColor)
+ {
+ case SalROPColor::N0:
+ mLineColor = Color(0, 0, 0);
+ break;
+ case SalROPColor::N1:
+ mLineColor = Color(0xff, 0xff, 0xff);
+ break;
+ case SalROPColor::Invert:
+ mLineColor = Color(0xff, 0xff, 0xff);
+ break;
+ }
+}
+
+void SkiaSalGraphicsImpl::SetROPFillColor(SalROPColor nROPColor)
+{
+ checkPendingDrawing();
+ switch (nROPColor)
+ {
+ case SalROPColor::N0:
+ mFillColor = Color(0, 0, 0);
+ break;
+ case SalROPColor::N1:
+ mFillColor = Color(0xff, 0xff, 0xff);
+ break;
+ case SalROPColor::Invert:
+ mFillColor = Color(0xff, 0xff, 0xff);
+ break;
+ }
+}
+
+void SkiaSalGraphicsImpl::drawPixel(long nX, long nY) { drawPixel(nX, nY, mLineColor); }
+
+void SkiaSalGraphicsImpl::drawPixel(long nX, long nY, Color nColor)
+{
+ if (nColor == SALCOLOR_NONE)
+ return;
+ preDraw();
+ SAL_INFO("vcl.skia.trace", "drawpixel(" << this << "): " << Point(nX, nY) << ":" << nColor);
+ addXorRegion(SkRect::MakeXYWH(nX, nY, 1, 1));
+ SkPaint paint;
+ paint.setColor(toSkColor(nColor));
+ // Apparently drawPixel() is actually expected to set the pixel and not draw it.
+ paint.setBlendMode(SkBlendMode::kSrc); // set as is, including alpha
+ getDrawCanvas()->drawPoint(toSkX(nX), toSkY(nY), paint);
+ postDraw();
+}
+
+void SkiaSalGraphicsImpl::drawLine(long nX1, long nY1, long nX2, long nY2)
+{
+ if (mLineColor == SALCOLOR_NONE)
+ return;
+ preDraw();
+ SAL_INFO("vcl.skia.trace", "drawline(" << this << "): " << Point(nX1, nY1) << "->"
+ << Point(nX2, nY2) << ":" << mLineColor);
+ addXorRegion(SkRect::MakeLTRB(nX1, nY1, nX2, nY2).makeSorted());
+ SkPaint paint;
+ paint.setColor(toSkColor(mLineColor));
+ paint.setAntiAlias(mParent.getAntiAliasB2DDraw());
+ getDrawCanvas()->drawLine(toSkX(nX1), toSkY(nY1), toSkX(nX2), toSkY(nY2), paint);
+ postDraw();
+}
+
+void SkiaSalGraphicsImpl::privateDrawAlphaRect(long nX, long nY, long nWidth, long nHeight,
+ double fTransparency, bool blockAA)
+{
+ preDraw();
+ SAL_INFO("vcl.skia.trace",
+ "privatedrawrect(" << this << "): " << SkIRect::MakeXYWH(nX, nY, nWidth, nHeight)
+ << ":" << mLineColor << ":" << mFillColor << ":" << fTransparency);
+ addXorRegion(SkRect::MakeXYWH(nX, nY, nWidth, nHeight));
+ SkCanvas* canvas = getDrawCanvas();
+ SkPaint paint;
+ paint.setAntiAlias(!blockAA && mParent.getAntiAliasB2DDraw());
+ if (mFillColor != SALCOLOR_NONE)
+ {
+ paint.setColor(toSkColorWithTransparency(mFillColor, fTransparency));
+ paint.setStyle(SkPaint::kFill_Style);
+ // HACK: If the polygon is just a line, it still should be drawn. But when filling
+ // Skia doesn't draw empty polygons, so in that case ensure the line is drawn.
+ if (mLineColor == SALCOLOR_NONE && SkSize::Make(nWidth, nHeight).isEmpty())
+ paint.setStyle(SkPaint::kStroke_Style);
+ canvas->drawIRect(SkIRect::MakeXYWH(nX, nY, nWidth, nHeight), paint);
+ }
+ if (mLineColor != SALCOLOR_NONE)
+ {
+ paint.setColor(toSkColorWithTransparency(mLineColor, fTransparency));
+ paint.setStyle(SkPaint::kStroke_Style);
+ // The obnoxious "-1 DrawRect()" hack that I don't understand the purpose of (and I'm not sure
+ // if anybody does), but without it some cases do not work. The max() is needed because Skia
+ // will not draw anything if width or height is 0.
+ canvas->drawIRect(
+ SkIRect::MakeXYWH(nX, nY, std::max(1L, nWidth - 1), std::max(1L, nHeight - 1)), paint);
+ }
+ postDraw();
+}
+
+void SkiaSalGraphicsImpl::drawRect(long nX, long nY, long nWidth, long nHeight)
+{
+ privateDrawAlphaRect(nX, nY, nWidth, nHeight, 0.0, true);
+}
+
+void SkiaSalGraphicsImpl::drawPolyLine(sal_uInt32 nPoints, const SalPoint* pPtAry)
+{
+ basegfx::B2DPolygon aPolygon;
+ aPolygon.append(basegfx::B2DPoint(pPtAry->mnX, pPtAry->mnY), nPoints);
+ for (sal_uInt32 i = 1; i < nPoints; ++i)
+ aPolygon.setB2DPoint(i, basegfx::B2DPoint(pPtAry[i].mnX, pPtAry[i].mnY));
+ aPolygon.setClosed(false);
+
+ drawPolyLine(basegfx::B2DHomMatrix(), aPolygon, 0.0, 1.0, nullptr, basegfx::B2DLineJoin::Miter,
+ css::drawing::LineCap_BUTT, basegfx::deg2rad(15.0) /*default*/, false);
+}
+
+void SkiaSalGraphicsImpl::drawPolygon(sal_uInt32 nPoints, const SalPoint* pPtAry)
+{
+ basegfx::B2DPolygon aPolygon;
+ aPolygon.append(basegfx::B2DPoint(pPtAry->mnX, pPtAry->mnY), nPoints);
+ for (sal_uInt32 i = 1; i < nPoints; ++i)
+ aPolygon.setB2DPoint(i, basegfx::B2DPoint(pPtAry[i].mnX, pPtAry[i].mnY));
+
+ drawPolyPolygon(basegfx::B2DHomMatrix(), basegfx::B2DPolyPolygon(aPolygon), 0.0);
+}
+
+void SkiaSalGraphicsImpl::drawPolyPolygon(sal_uInt32 nPoly, const sal_uInt32* pPoints,
+ PCONSTSALPOINT* pPtAry)
+{
+ basegfx::B2DPolyPolygon aPolyPolygon;
+ for (sal_uInt32 nPolygon = 0; nPolygon < nPoly; ++nPolygon)
+ {
+ sal_uInt32 nPoints = pPoints[nPolygon];
+ if (nPoints)
+ {
+ PCONSTSALPOINT pSalPoints = pPtAry[nPolygon];
+ basegfx::B2DPolygon aPolygon;
+ aPolygon.append(basegfx::B2DPoint(pSalPoints->mnX, pSalPoints->mnY), nPoints);
+ for (sal_uInt32 i = 1; i < nPoints; ++i)
+ aPolygon.setB2DPoint(i, basegfx::B2DPoint(pSalPoints[i].mnX, pSalPoints[i].mnY));
+
+ aPolyPolygon.append(aPolygon);
+ }
+ }
+
+ drawPolyPolygon(basegfx::B2DHomMatrix(), aPolyPolygon, 0.0);
+}
+
+bool SkiaSalGraphicsImpl::drawPolyPolygon(const basegfx::B2DHomMatrix& rObjectToDevice,
+ const basegfx::B2DPolyPolygon& rPolyPolygon,
+ double fTransparency)
+{
+ const bool bHasFill(mFillColor != SALCOLOR_NONE);
+ const bool bHasLine(mLineColor != SALCOLOR_NONE);
+
+ if (rPolyPolygon.count() == 0 || !(bHasFill || bHasLine) || fTransparency < 0.0
+ || fTransparency >= 1.0)
+ return true;
+
+ basegfx::B2DPolyPolygon aPolyPolygon(rPolyPolygon);
+ aPolyPolygon.transform(rObjectToDevice);
+
+ SAL_INFO("vcl.skia.trace", "drawpolypolygon(" << this << "): " << aPolyPolygon << ":"
+ << mLineColor << ":" << mFillColor);
+
+ if (delayDrawPolyPolygon(aPolyPolygon, fTransparency))
+ {
+ scheduleFlush();
+ return true;
+ }
+
+ performDrawPolyPolygon(aPolyPolygon, fTransparency, mParent.getAntiAliasB2DDraw());
+ return true;
+}
+
+void SkiaSalGraphicsImpl::performDrawPolyPolygon(const basegfx::B2DPolyPolygon& aPolyPolygon,
+ double fTransparency, bool useAA)
+{
+ preDraw();
+
+ SkPath polygonPath;
+ bool hasOnlyOrthogonal = true;
+ addPolyPolygonToPath(aPolyPolygon, polygonPath, &hasOnlyOrthogonal);
+ polygonPath.setFillType(SkPathFillType::kEvenOdd);
+ addXorRegion(polygonPath.getBounds());
+
+ SkPaint aPaint;
+ aPaint.setAntiAlias(useAA);
+
+ // For lines we use toSkX()/toSkY() in order to pass centers of pixels to Skia,
+ // as that leads to better results with floating-point coordinates
+ // (e.g. https://bugs.chromium.org/p/skia/issues/detail?id=9611).
+ // But that means that we generally need to use it also for areas, so that they
+ // line up properly if used together (tdf#134346).
+ // On the other hand, with AA enabled and rectangular areas, this leads to fuzzy
+ // edges (tdf#137329). But since rectangular areas line up perfectly to pixels
+ // everywhere, it shouldn't be necessary to do this for them.
+ // So if AA is enabled, avoid this fixup for rectangular areas.
+ if (!useAA || !hasOnlyOrthogonal)
+ {
+ // We normally use pixel at their center positions, but slightly off (see toSkX/Y()).
+ // With AA lines that "slightly off" causes tiny changes of color, making some tests
+ // fail. Since moving AA-ed line slightly to a side doesn't cause any real visual
+ // difference, just place exactly at the center. tdf#134346
+ const SkScalar posFix = useAA ? toSkXYFix : 0;
+ polygonPath.offset(toSkX(0) + posFix, toSkY(0) + posFix, nullptr);
+ }
+ if (mFillColor != SALCOLOR_NONE)
+ {
+ aPaint.setColor(toSkColorWithTransparency(mFillColor, fTransparency));
+ aPaint.setStyle(SkPaint::kFill_Style);
+ // HACK: If the polygon is just a line, it still should be drawn. But when filling
+ // Skia doesn't draw empty polygons, so in that case ensure the line is drawn.
+ if (mLineColor == SALCOLOR_NONE && polygonPath.getBounds().isEmpty())
+ aPaint.setStyle(SkPaint::kStroke_Style);
+ getDrawCanvas()->drawPath(polygonPath, aPaint);
+ }
+ if (mLineColor != SALCOLOR_NONE)
+ {
+ aPaint.setColor(toSkColorWithTransparency(mLineColor, fTransparency));
+ aPaint.setStyle(SkPaint::kStroke_Style);
+ getDrawCanvas()->drawPath(polygonPath, aPaint);
+ }
+ postDraw();
+#if defined LINUX
+ // WORKAROUND: The logo in the about dialog has drawing errors. This seems to happen
+ // only on Linux (not Windows on the same machine), with both AMDGPU and Mesa,
+ // and only when antialiasing is enabled. Flushing seems to avoid the problem.
+ if (useAA && SkiaHelper::getVendor() == DriverBlocklist::VendorAMD)
+ mSurface->flushAndSubmit();
+#endif
+}
+
+namespace
+{
+struct LessThan
+{
+ bool operator()(const basegfx::B2DPoint& point1, const basegfx::B2DPoint& point2) const
+ {
+ if (basegfx::fTools::equal(point1.getX(), point2.getX()))
+ return basegfx::fTools::less(point1.getY(), point2.getY());
+ return basegfx::fTools::less(point1.getX(), point2.getX());
+ }
+};
+} // namespace
+
+bool SkiaSalGraphicsImpl::delayDrawPolyPolygon(const basegfx::B2DPolyPolygon& aPolyPolygon,
+ double fTransparency)
+{
+ // There is some code that needlessly subdivides areas into adjacent rectangles,
+ // but Skia doesn't line them up perfectly if AA is enabled (e.g. Cairo, Qt5 do,
+ // but Skia devs claim it's working as intended
+ // https://groups.google.com/d/msg/skia-discuss/NlKpD2X_5uc/Vuwd-kyYBwAJ).
+ // An example is tdf#133016, which triggers SvgStyleAttributes::add_stroke()
+ // implementing a line stroke as a bunch of polygons instead of just one, and
+ // SvgLinearAtomPrimitive2D::create2DDecomposition() creates a gradient
+ // as a series of polygons of gradually changing color. Those places should be
+ // changed, but try to merge those split polygons back into the original one,
+ // where the needlessly created edges causing problems will not exist.
+ // This means drawing of such polygons needs to be delayed, so that they can
+ // be possibly merged with the next one.
+ // Merge only polygons of the same properties (color, etc.), so the gradient problem
+ // actually isn't handled here.
+
+ // Only AA polygons need merging, because they do not line up well because of the AA of the edges.
+ if (!mParent.getAntiAliasB2DDraw())
+ return false;
+ // Only filled polygons without an outline are problematic.
+ if (mFillColor == SALCOLOR_NONE || mLineColor != SALCOLOR_NONE)
+ return false;
+ // Merge only simple polygons, real polypolygons most likely aren't needlessly split,
+ // so they do not need joining.
+ if (aPolyPolygon.count() != 1)
+ return false;
+ // If the polygon is not closed, it doesn't mark an area to be filled.
+ if (!aPolyPolygon.isClosed())
+ return false;
+ // If a polygon does not contain a straight line, i.e. it's all curves, then do not merge.
+ // First of all that's even more expensive, and second it's very unlikely that it's a polygon
+ // split into more polygons.
+ if (!polygonContainsLine(aPolyPolygon))
+ return false;
+
+ if (mLastPolyPolygonInfo.polygons.size() != 0
+ && (mLastPolyPolygonInfo.transparency != fTransparency
+ || !mLastPolyPolygonInfo.bounds.overlaps(aPolyPolygon.getB2DRange())))
+ {
+ checkPendingDrawing(); // Cannot be parts of the same larger polygon, draw the last and reset.
+ }
+ if (!mLastPolyPolygonInfo.polygons.empty())
+ {
+ assert(aPolyPolygon.count() == 1);
+ assert(mLastPolyPolygonInfo.polygons.back().count() == 1);
+ // Check if the new and the previous polygon share at least one point. If not, then they
+ // cannot be adjacent polygons, so there's no point in trying to merge them.
+ bool sharePoint = false;
+ const basegfx::B2DPolygon& poly1 = aPolyPolygon.getB2DPolygon(0);
+ const basegfx::B2DPolygon& poly2 = mLastPolyPolygonInfo.polygons.back().getB2DPolygon(0);
+ o3tl::sorted_vector<basegfx::B2DPoint, LessThan> poly1Points; // for O(n log n)
+ poly1Points.reserve(poly1.count());
+ for (sal_uInt32 i = 0; i < poly1.count(); ++i)
+ poly1Points.insert(poly1.getB2DPoint(i));
+ for (sal_uInt32 i = 0; i < poly2.count(); ++i)
+ if (poly1Points.find(poly2.getB2DPoint(i)) != poly1Points.end())
+ {
+ sharePoint = true;
+ break;
+ }
+ if (!sharePoint)
+ checkPendingDrawing(); // Draw the previous one and reset.
+ }
+ // Collect the polygons that can be possibly merged. Do the merging only once at the end,
+ // because it's not a cheap operation.
+ mLastPolyPolygonInfo.polygons.push_back(aPolyPolygon);
+ mLastPolyPolygonInfo.bounds.expand(aPolyPolygon.getB2DRange());
+ mLastPolyPolygonInfo.transparency = fTransparency;
+ return true;
+}
+
+void SkiaSalGraphicsImpl::checkPendingDrawing()
+{
+ if (mLastPolyPolygonInfo.polygons.size() != 0)
+ { // Flush any pending polygon drawing.
+ basegfx::B2DPolyPolygonVector polygons;
+ std::swap(polygons, mLastPolyPolygonInfo.polygons);
+ double transparency = mLastPolyPolygonInfo.transparency;
+ mLastPolyPolygonInfo.bounds.reset();
+ if (polygons.size() == 1)
+ performDrawPolyPolygon(polygons.front(), transparency, true);
+ else
+ // TODO: tdf#136222 shows that basegfx::utils::mergeToSinglePolyPolygon() is unreliable
+ // in corner cases, possibly either a bug or rounding errors somewhere.
+ performDrawPolyPolygon(basegfx::utils::mergeToSinglePolyPolygon(polygons), transparency,
+ true);
+ }
+}
+
+bool SkiaSalGraphicsImpl::drawPolyLine(const basegfx::B2DHomMatrix& rObjectToDevice,
+ const basegfx::B2DPolygon& rPolyLine, double fTransparency,
+ double fLineWidth, const std::vector<double>* pStroke,
+ basegfx::B2DLineJoin eLineJoin,
+ css::drawing::LineCap eLineCap, double fMiterMinimumAngle,
+ bool bPixelSnapHairline)
+{
+ if (!rPolyLine.count() || fTransparency < 0.0 || fTransparency > 1.0
+ || mLineColor == SALCOLOR_NONE)
+ {
+ return true;
+ }
+
+ preDraw();
+ SAL_INFO("vcl.skia.trace", "drawpolyline(" << this << "): " << rPolyLine << ":" << mLineColor);
+
+ // tdf#124848 get correct LineWidth in discrete coordinates,
+ if (fLineWidth == 0) // hairline
+ fLineWidth = 1.0;
+ else // Adjust line width for object-to-device scale.
+ fLineWidth = (rObjectToDevice * basegfx::B2DVector(fLineWidth, 0)).getLength();
+
+ // Transform to DeviceCoordinates, get DeviceLineWidth, execute PixelSnapHairline
+ basegfx::B2DPolyPolygon aPolyPolygonLine;
+ aPolyPolygonLine.append(rPolyLine);
+ aPolyPolygonLine.transform(rObjectToDevice);
+ if (bPixelSnapHairline)
+ {
+ aPolyPolygonLine = basegfx::utils::snapPointsOfHorizontalOrVerticalEdges(aPolyPolygonLine);
+ }
+
+ // Setup Line Join
+ SkPaint::Join eSkLineJoin = SkPaint::kMiter_Join;
+ switch (eLineJoin)
+ {
+ case basegfx::B2DLineJoin::Bevel:
+ eSkLineJoin = SkPaint::kBevel_Join;
+ break;
+ case basegfx::B2DLineJoin::Round:
+ eSkLineJoin = SkPaint::kRound_Join;
+ break;
+ case basegfx::B2DLineJoin::NONE:
+ case basegfx::B2DLineJoin::Miter:
+ eSkLineJoin = SkPaint::kMiter_Join;
+ break;
+ }
+
+ // convert miter minimum angle to miter limit
+ double fMiterLimit = 1.0 / std::sin(fMiterMinimumAngle / 2.0);
+
+ // Setup Line Cap
+ SkPaint::Cap eSkLineCap(SkPaint::kButt_Cap);
+
+ switch (eLineCap)
+ {
+ case css::drawing::LineCap_ROUND:
+ eSkLineCap = SkPaint::kRound_Cap;
+ break;
+ case css::drawing::LineCap_SQUARE:
+ eSkLineCap = SkPaint::kSquare_Cap;
+ break;
+ default: // css::drawing::LineCap_BUTT:
+ eSkLineCap = SkPaint::kButt_Cap;
+ break;
+ }
+
+ SkPaint aPaint;
+ aPaint.setStyle(SkPaint::kStroke_Style);
+ aPaint.setStrokeCap(eSkLineCap);
+ aPaint.setStrokeJoin(eSkLineJoin);
+ aPaint.setColor(toSkColorWithTransparency(mLineColor, fTransparency));
+ aPaint.setStrokeMiter(fMiterLimit);
+ aPaint.setStrokeWidth(fLineWidth);
+ aPaint.setAntiAlias(mParent.getAntiAliasB2DDraw());
+ // See the tdf#134346 comment above.
+ const SkScalar posFix = mParent.getAntiAliasB2DDraw() ? toSkXYFix : 0;
+
+ if (pStroke && std::accumulate(pStroke->begin(), pStroke->end(), 0.0) != 0)
+ {
+ std::vector<SkScalar> intervals;
+ // Transform size by the matrix.
+ for (double stroke : *pStroke)
+ intervals.push_back((rObjectToDevice * basegfx::B2DVector(stroke, 0)).getLength());
+ aPaint.setPathEffect(SkDashPathEffect::Make(intervals.data(), intervals.size(), 0));
+ }
+
+ // Skia does not support basegfx::B2DLineJoin::NONE, so in that case batch only if lines
+ // are not wider than a pixel.
+ if (eLineJoin != basegfx::B2DLineJoin::NONE || fLineWidth <= 1.0)
+ {
+ SkPath aPath;
+ aPath.setFillType(SkPathFillType::kEvenOdd);
+ for (sal_uInt32 a(0); a < aPolyPolygonLine.count(); a++)
+ addPolygonToPath(aPolyPolygonLine.getB2DPolygon(a), aPath);
+ aPath.offset(toSkX(0) + posFix, toSkY(0) + posFix, nullptr);
+ addXorRegion(aPath.getBounds());
+ getDrawCanvas()->drawPath(aPath, aPaint);
+ }
+ else
+ {
+ for (sal_uInt32 i = 0; i < aPolyPolygonLine.count(); ++i)
+ {
+ const basegfx::B2DPolygon& rPolygon = aPolyPolygonLine.getB2DPolygon(i);
+ sal_uInt32 nPoints = rPolygon.count();
+ bool bClosed = rPolygon.isClosed();
+ for (sal_uInt32 j = 0; j < (bClosed ? nPoints : nPoints - 1); ++j)
+ {
+ sal_uInt32 index1 = (j + 0) % nPoints;
+ sal_uInt32 index2 = (j + 1) % nPoints;
+ SkPath aPath;
+ aPath.moveTo(rPolygon.getB2DPoint(index1).getX(),
+ rPolygon.getB2DPoint(index1).getY());
+ aPath.lineTo(rPolygon.getB2DPoint(index2).getX(),
+ rPolygon.getB2DPoint(index2).getY());
+
+ aPath.offset(toSkX(0) + posFix, toSkY(0) + posFix, nullptr);
+ addXorRegion(aPath.getBounds());
+ getDrawCanvas()->drawPath(aPath, aPaint);
+ }
+ }
+ }
+
+ postDraw();
+
+ return true;
+}
+
+bool SkiaSalGraphicsImpl::drawPolyLineBezier(sal_uInt32, const SalPoint*, const PolyFlags*)
+{
+ // TODO?
+ return false;
+}
+
+bool SkiaSalGraphicsImpl::drawPolygonBezier(sal_uInt32, const SalPoint*, const PolyFlags*)
+{
+ // TODO?
+ return false;
+}
+
+bool SkiaSalGraphicsImpl::drawPolyPolygonBezier(sal_uInt32, const sal_uInt32*,
+ const SalPoint* const*, const PolyFlags* const*)
+{
+ // TODO?
+ return false;
+}
+
+static void copyArea(SkCanvas* canvas, sk_sp<SkSurface> surface, long nDestX, long nDestY,
+ long nSrcX, long nSrcY, long nSrcWidth, long nSrcHeight, bool srcIsRaster,
+ bool destIsRaster)
+{
+ // Using SkSurface::draw() should be more efficient than SkSurface::makeImageSnapshot(),
+ // because it may detect copying to itself and avoid some needless copies.
+ // But it has problems with drawing to itself
+ // (https://groups.google.com/forum/#!topic/skia-discuss/6yiuw24jv0I) and also
+ // raster surfaces do not avoid a copy of the source
+ // (https://groups.google.com/forum/#!topic/skia-discuss/S3FMpCi82k0).
+ // Finally, there's not much point if one of them is raster and the other is not (chrome/m86 even crashes).
+ if (canvas == surface->getCanvas() || srcIsRaster || (srcIsRaster != destIsRaster))
+ {
+ SkPaint paint;
+ paint.setBlendMode(SkBlendMode::kSrc); // copy as is, including alpha
+ canvas->drawImageRect(SkiaHelper::makeCheckedImageSnapshot(surface),
+ SkIRect::MakeXYWH(nSrcX, nSrcY, nSrcWidth, nSrcHeight),
+ SkRect::MakeXYWH(nDestX, nDestY, nSrcWidth, nSrcHeight), &paint);
+ return;
+ }
+ // SkCanvas::draw() cannot do a subrectangle, so clip.
+ canvas->save();
+ canvas->clipRect(SkRect::MakeXYWH(nDestX, nDestY, nSrcWidth, nSrcHeight));
+ SkPaint paint;
+ paint.setBlendMode(SkBlendMode::kSrc); // copy as is, including alpha
+ surface->draw(canvas, nDestX - nSrcX, nDestY - nSrcY, &paint);
+ canvas->restore();
+}
+
+void SkiaSalGraphicsImpl::copyArea(long nDestX, long nDestY, long nSrcX, long nSrcY, long nSrcWidth,
+ long nSrcHeight, bool /*bWindowInvalidate*/)
+{
+ if (nDestX == nSrcX && nDestY == nSrcY)
+ return;
+ preDraw();
+ SAL_INFO("vcl.skia.trace", "copyarea("
+ << this << "): " << Point(nSrcX, nSrcY) << "->"
+ << SkIRect::MakeXYWH(nDestX, nDestY, nSrcWidth, nSrcHeight));
+ assert(!mXorMode);
+ ::copyArea(getDrawCanvas(), mSurface, nDestX, nDestY, nSrcX, nSrcY, nSrcWidth, nSrcHeight,
+ !isGPU(), !isGPU());
+ postDraw();
+}
+
+void SkiaSalGraphicsImpl::copyBits(const SalTwoRect& rPosAry, SalGraphics* pSrcGraphics)
+{
+ preDraw();
+ SkiaSalGraphicsImpl* src;
+ if (pSrcGraphics)
+ {
+ assert(dynamic_cast<SkiaSalGraphicsImpl*>(pSrcGraphics->GetImpl()));
+ src = static_cast<SkiaSalGraphicsImpl*>(pSrcGraphics->GetImpl());
+ src->checkSurface();
+ src->flushDrawing();
+ }
+ else
+ {
+ src = this;
+ assert(!mXorMode);
+ }
+ if (rPosAry.mnSrcWidth == rPosAry.mnDestWidth && rPosAry.mnSrcHeight == rPosAry.mnDestHeight)
+ {
+ auto srcDebug = [&]() -> std::string {
+ if (src == this)
+ return "(self)";
+ else
+ {
+ std::ostringstream stream;
+ stream << "(" << src << ")";
+ return stream.str();
+ }
+ };
+ SAL_INFO("vcl.skia.trace",
+ "copybits(" << this << "): " << srcDebug() << " copy area: " << rPosAry);
+ ::copyArea(getDrawCanvas(), src->mSurface, rPosAry.mnDestX, rPosAry.mnDestY, rPosAry.mnSrcX,
+ rPosAry.mnSrcY, rPosAry.mnDestWidth, rPosAry.mnDestHeight, !src->isGPU(),
+ !isGPU());
+ }
+ else
+ {
+ SAL_INFO("vcl.skia.trace", "copybits(" << this << "): (" << src << "): " << rPosAry);
+ // Do not use makeImageSnapshot(rect), as that one may make a needless data copy.
+ sk_sp<SkImage> image = SkiaHelper::makeCheckedImageSnapshot(src->mSurface);
+ SkPaint paint;
+ paint.setBlendMode(SkBlendMode::kSrc); // copy as is, including alpha
+ if (rPosAry.mnSrcWidth != rPosAry.mnDestWidth
+ || rPosAry.mnSrcHeight != rPosAry.mnDestHeight)
+ paint.setFilterQuality(kHigh_SkFilterQuality);
+ getDrawCanvas()->drawImageRect(image,
+ SkIRect::MakeXYWH(rPosAry.mnSrcX, rPosAry.mnSrcY,
+ rPosAry.mnSrcWidth, rPosAry.mnSrcHeight),
+ SkRect::MakeXYWH(rPosAry.mnDestX, rPosAry.mnDestY,
+ rPosAry.mnDestWidth, rPosAry.mnDestHeight),
+ &paint);
+ }
+ assert(!mXorMode);
+ postDraw();
+}
+
+bool SkiaSalGraphicsImpl::blendBitmap(const SalTwoRect& rPosAry, const SalBitmap& rBitmap)
+{
+ if (checkInvalidSourceOrDestination(rPosAry))
+ return false;
+
+ assert(dynamic_cast<const SkiaSalBitmap*>(&rBitmap));
+ const SkiaSalBitmap& rSkiaBitmap = static_cast<const SkiaSalBitmap&>(rBitmap);
+ // This is used by VirtualDevice in the alpha mode for the "alpha" layer which
+ // is actually one-minus-alpha (opacity). Therefore white=0xff=transparent,
+ // black=0x00=opaque. So the result is transparent only if both the inputs
+ // are transparent. Since for blending operations white=1.0 and black=0.0,
+ // kMultiply should handle exactly that (transparent*transparent=transparent,
+ // opaque*transparent=opaque). And guessing from the "floor" in TYPE_BLEND in opengl's
+ // combinedTextureFragmentShader.glsl, the layer is not even alpha values but
+ // simply yes-or-no mask.
+ // See also blendAlphaBitmap().
+ drawImage(rPosAry, rSkiaBitmap.GetSkImage(), SkBlendMode::kMultiply);
+ return true;
+}
+
+bool SkiaSalGraphicsImpl::blendAlphaBitmap(const SalTwoRect& rPosAry,
+ const SalBitmap& rSourceBitmap,
+ const SalBitmap& rMaskBitmap,
+ const SalBitmap& rAlphaBitmap)
+{
+ if (checkInvalidSourceOrDestination(rPosAry))
+ return false;
+
+ assert(dynamic_cast<const SkiaSalBitmap*>(&rSourceBitmap));
+ assert(dynamic_cast<const SkiaSalBitmap*>(&rMaskBitmap));
+ assert(dynamic_cast<const SkiaSalBitmap*>(&rAlphaBitmap));
+ const SkiaSalBitmap& rSkiaSourceBitmap = static_cast<const SkiaSalBitmap&>(rSourceBitmap);
+ const SkiaSalBitmap& rSkiaMaskBitmap = static_cast<const SkiaSalBitmap&>(rMaskBitmap);
+ const SkiaSalBitmap& rSkiaAlphaBitmap = static_cast<const SkiaSalBitmap&>(rAlphaBitmap);
+
+ // This was originally implemented for the OpenGL drawing method and it is poorly documented.
+ // The source and mask bitmaps are the usual data and alpha bitmaps, and 'alpha'
+ // is the "alpha" layer of the VirtualDevice (the alpha in VirtualDevice is also stored
+ // as a separate bitmap). Now if I understand it correctly these two alpha masks first need
+ // to be combined into the actual alpha mask to be used. The formula for TYPE_BLEND
+ // in opengl's combinedTextureFragmentShader.glsl is
+ // "result_alpha = 1.0 - (1.0 - floor(alpha)) * mask".
+ // See also blendBitmap().
+
+ // First do the "( 1 - alpha ) * mask"
+ // (no idea how to do "floor", but hopefully not needed in practice).
+ sk_sp<SkShader> shaderAlpha
+ = SkShaders::Blend(SkBlendMode::kDstOut, rSkiaMaskBitmap.GetAlphaSkImage()->makeShader(),
+ rSkiaAlphaBitmap.GetAlphaSkImage()->makeShader());
+ // And now draw the bitmap with "1 - x", where x is the "( 1 - alpha ) * mask".
+ sk_sp<SkShader> shader = SkShaders::Blend(SkBlendMode::kSrcOut, shaderAlpha,
+ rSkiaSourceBitmap.GetSkImage()->makeShader());
+ drawShader(rPosAry, shader);
+ return true;
+}
+
+void SkiaSalGraphicsImpl::drawBitmap(const SalTwoRect& rPosAry, const SalBitmap& rSalBitmap)
+{
+ if (checkInvalidSourceOrDestination(rPosAry))
+ return;
+
+ assert(dynamic_cast<const SkiaSalBitmap*>(&rSalBitmap));
+ const SkiaSalBitmap& rSkiaSourceBitmap = static_cast<const SkiaSalBitmap&>(rSalBitmap);
+
+ drawImage(rPosAry, rSkiaSourceBitmap.GetSkImage());
+}
+
+void SkiaSalGraphicsImpl::drawBitmap(const SalTwoRect& rPosAry, const SalBitmap& rSalBitmap,
+ const SalBitmap& rMaskBitmap)
+{
+ drawAlphaBitmap(rPosAry, rSalBitmap, rMaskBitmap);
+}
+
+void SkiaSalGraphicsImpl::drawMask(const SalTwoRect& rPosAry, const SalBitmap& rSalBitmap,
+ Color nMaskColor)
+{
+ assert(dynamic_cast<const SkiaSalBitmap*>(&rSalBitmap));
+ const SkiaSalBitmap& skiaBitmap = static_cast<const SkiaSalBitmap&>(rSalBitmap);
+ drawShader(rPosAry,
+ SkShaders::Blend(SkBlendMode::kDstOut, // VCL alpha is one-minus-alpha.
+ SkShaders::Color(toSkColor(nMaskColor)),
+ skiaBitmap.GetAlphaSkImage()->makeShader()));
+}
+
+std::shared_ptr<SalBitmap> SkiaSalGraphicsImpl::getBitmap(long nX, long nY, long nWidth,
+ long nHeight)
+{
+ SkiaZone zone;
+ checkSurface();
+ SAL_INFO("vcl.skia.trace",
+ "getbitmap(" << this << "): " << SkIRect::MakeXYWH(nX, nY, nWidth, nHeight));
+ flushDrawing();
+ // TODO makeImageSnapshot(rect) may copy the data, which may be a waste if this is used
+ // e.g. for VirtualDevice's lame alpha blending, in which case the image will eventually end up
+ // in blendAlphaBitmap(), where we could simply use the proper rect of the image.
+ sk_sp<SkImage> image = SkiaHelper::makeCheckedImageSnapshot(
+ mSurface, SkIRect::MakeXYWH(nX, nY, nWidth, nHeight));
+ return std::make_shared<SkiaSalBitmap>(image);
+}
+
+Color SkiaSalGraphicsImpl::getPixel(long nX, long nY)
+{
+ SkiaZone zone;
+ checkSurface();
+ SAL_INFO("vcl.skia.trace", "getpixel(" << this << "): " << Point(nX, nY));
+ flushDrawing();
+ // This is presumably slow, but getPixel() should be generally used only by unit tests.
+ SkBitmap bitmap;
+ if (!bitmap.tryAllocN32Pixels(GetWidth(), GetHeight()))
+ abort();
+ if (!mSurface->readPixels(bitmap, 0, 0))
+ abort();
+ return fromSkColor(bitmap.getColor(nX, nY));
+}
+
+void SkiaSalGraphicsImpl::invert(basegfx::B2DPolygon const& rPoly, SalInvert eFlags)
+{
+ preDraw();
+ SAL_INFO("vcl.skia.trace", "invert(" << this << "): " << rPoly << ":" << int(eFlags));
+ assert(!mXorMode);
+ // Intel Vulkan drivers (up to current 0.401.3889) have a problem
+ // with SkBlendMode::kDifference(?) and surfaces wider than 1024 pixels, resulting
+ // in drawing errors. Work that around by fetching the relevant part of the surface
+ // and drawing using CPU.
+ bool intelHack
+ = (isGPU() && SkiaHelper::getVendor() == DriverBlocklist::VendorIntel && !mXorMode);
+ // TrackFrame just inverts a dashed path around the polygon
+ if (eFlags == SalInvert::TrackFrame)
+ {
+ SkPath aPath;
+ addPolygonToPath(rPoly, aPath);
+ aPath.setFillType(SkPathFillType::kEvenOdd);
+ // TrackFrame is not supposed to paint outside of the polygon (usually rectangle),
+ // but wider stroke width usually results in that, so ensure the requirement
+ // by clipping.
+ SkAutoCanvasRestore autoRestore(getDrawCanvas(), true);
+ getDrawCanvas()->clipRect(aPath.getBounds(), SkClipOp::kIntersect, false);
+ SkPaint aPaint;
+ aPaint.setStrokeWidth(2);
+ float intervals[] = { 4.0f, 4.0f };
+ aPaint.setStyle(SkPaint::kStroke_Style);
+ aPaint.setPathEffect(SkDashPathEffect::Make(intervals, SK_ARRAY_COUNT(intervals), 0));
+ aPaint.setColor(SkColorSetARGB(255, 255, 255, 255));
+ aPaint.setBlendMode(SkBlendMode::kDifference);
+ if (!intelHack)
+ getDrawCanvas()->drawPath(aPath, aPaint);
+ else
+ {
+ SkRect area;
+ aPath.getBounds().roundOut(&area);
+ SkRect size = SkRect::MakeWH(area.width(), area.height());
+ sk_sp<SkSurface> surface = SkSurface::MakeRasterN32Premul(area.width(), area.height());
+ SkPaint copy;
+ copy.setBlendMode(SkBlendMode::kSrc);
+ flushDrawing();
+ surface->getCanvas()->drawImageRect(SkiaHelper::makeCheckedImageSnapshot(mSurface),
+ area, size, &copy);
+ aPath.offset(-area.x(), -area.y());
+ surface->getCanvas()->drawPath(aPath, aPaint);
+ getDrawCanvas()->drawImageRect(SkiaHelper::makeCheckedImageSnapshot(surface), size,
+ area, &copy);
+ }
+ }
+ else
+ {
+ SkPath aPath;
+ addPolygonToPath(rPoly, aPath);
+ aPath.setFillType(SkPathFillType::kEvenOdd);
+ SkPaint aPaint;
+ aPaint.setColor(SkColorSetARGB(255, 255, 255, 255));
+ aPaint.setStyle(SkPaint::kFill_Style);
+ aPaint.setBlendMode(SkBlendMode::kDifference);
+
+ // N50 inverts in checker pattern
+ if (eFlags == SalInvert::N50)
+ {
+ // This creates 2x2 checker pattern bitmap
+ // TODO Use SkiaHelper::createSkSurface() and cache the image
+ SkBitmap aBitmap;
+ aBitmap.allocN32Pixels(2, 2);
+ const SkPMColor white = SkPreMultiplyARGB(0xFF, 0xFF, 0xFF, 0xFF);
+ const SkPMColor black = SkPreMultiplyARGB(0xFF, 0x00, 0x00, 0x00);
+ SkPMColor* scanline;
+ scanline = aBitmap.getAddr32(0, 0);
+ *scanline++ = white;
+ *scanline++ = black;
+ scanline = aBitmap.getAddr32(0, 1);
+ *scanline++ = black;
+ *scanline++ = white;
+ aBitmap.setImmutable();
+ // The bitmap is repeated in both directions the checker pattern is as big
+ // as the polygon (usually rectangle)
+ aPaint.setShader(aBitmap.makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat));
+ }
+ if (!intelHack)
+ getDrawCanvas()->drawPath(aPath, aPaint);
+ else
+ {
+ SkRect area;
+ aPath.getBounds().roundOut(&area);
+ SkRect size = SkRect::MakeWH(area.width(), area.height());
+ sk_sp<SkSurface> surface = SkSurface::MakeRasterN32Premul(area.width(), area.height());
+ SkPaint copy;
+ copy.setBlendMode(SkBlendMode::kSrc);
+ flushDrawing();
+ surface->getCanvas()->drawImageRect(SkiaHelper::makeCheckedImageSnapshot(mSurface),
+ area, size, &copy);
+ aPath.offset(-area.x(), -area.y());
+ surface->getCanvas()->drawPath(aPath, aPaint);
+ getDrawCanvas()->drawImageRect(SkiaHelper::makeCheckedImageSnapshot(surface), size,
+ area, &copy);
+ }
+ }
+ postDraw();
+}
+
+void SkiaSalGraphicsImpl::invert(long nX, long nY, long nWidth, long nHeight, SalInvert eFlags)
+{
+ basegfx::B2DRectangle aRectangle(nX, nY, nX + nWidth, nY + nHeight);
+ auto aRect = basegfx::utils::createPolygonFromRect(aRectangle);
+ invert(aRect, eFlags);
+}
+
+void SkiaSalGraphicsImpl::invert(sal_uInt32 nPoints, const SalPoint* pPointArray, SalInvert eFlags)
+{
+ basegfx::B2DPolygon aPolygon;
+ aPolygon.append(basegfx::B2DPoint(pPointArray[0].mnX, pPointArray[0].mnY), nPoints);
+ for (sal_uInt32 i = 1; i < nPoints; ++i)
+ {
+ aPolygon.setB2DPoint(i, basegfx::B2DPoint(pPointArray[i].mnX, pPointArray[i].mnY));
+ }
+ aPolygon.setClosed(true);
+
+ invert(aPolygon, eFlags);
+}
+
+bool SkiaSalGraphicsImpl::drawEPS(long, long, long, long, void*, sal_uInt32)
+{
+ // TODO?
+ return false;
+}
+
+// Create SkImage from a bitmap and possibly an alpha mask (the usual VCL one-minus-alpha),
+// with the given target size. Result will be possibly cached, unless disabled.
+sk_sp<SkImage> SkiaSalGraphicsImpl::mergeCacheBitmaps(const SkiaSalBitmap& bitmap,
+ const SkiaSalBitmap* alphaBitmap,
+ const Size targetSize)
+{
+ sk_sp<SkImage> image;
+ // GPU-accelerated drawing with SkShader should be fast enough to not need caching.
+ if (isGPU())
+ return image;
+ if (targetSize.IsEmpty())
+ return image;
+ // Probably not much point in caching of just doing a copy.
+ if (alphaBitmap == nullptr && targetSize == bitmap.GetSize())
+ return image;
+ // Image too small to be worth caching.
+ if (bitmap.GetSize().Width() < 100 && bitmap.GetSize().Height() < 100
+ && targetSize.Width() < 100 && targetSize.Height() < 100)
+ return image;
+ // In some cases (tdf#134237) the draw size may be very large. In that case it's
+ // better to rely on Skia to clip and draw only the necessary, rather than prepare
+ // a very large image only to not use most of it.
+ if (targetSize.Width() > GetWidth() || targetSize.Height() > GetHeight())
+ {
+ // This is a bit tricky. The condition above just checks that at least a part of the resulting
+ // image will not be used (it's larger then our drawing area). But this may often happen
+ // when just scrolling a document with a large image, where the caching may very well be worth it.
+ // Since the problem is mainly the cost of upscaling and then the size of the resulting bitmap,
+ // compute a ratio of how much this is going to be scaled up, how much this is larger than
+ // the drawing area, and then refuse to cache if it's too much.
+ const double upscaleRatio = 1.0 * targetSize.Width() / bitmap.GetSize().Width()
+ * targetSize.Height() / bitmap.GetSize().Height();
+ const double oversizeRatio
+ = 1.0 * targetSize.Width() / GetWidth() * targetSize.Height() / GetHeight();
+ const double ratio = upscaleRatio * oversizeRatio;
+ if (ratio > 10)
+ {
+ SAL_INFO("vcl.skia.trace", "mergecachebitmaps("
+ << this << "): not caching upscaling, ratio:" << ratio
+ << ", " << bitmap.GetSize() << "->" << targetSize
+ << " in " << Size(GetWidth(), GetHeight()));
+ return image;
+ }
+ }
+ OString key;
+ OStringBuffer keyBuf;
+ keyBuf.append(targetSize.Width())
+ .append("x")
+ .append(targetSize.Height())
+ .append("_0x")
+ .append(reinterpret_cast<sal_IntPtr>(&bitmap), 16)
+ .append("_0x")
+ .append(reinterpret_cast<sal_IntPtr>(alphaBitmap), 16)
+ .append("_")
+ .append(static_cast<sal_Int64>(bitmap.GetSkImage()->uniqueID()));
+ if (alphaBitmap)
+ keyBuf.append("_").append(
+ static_cast<sal_Int64>(alphaBitmap->GetAlphaSkImage()->uniqueID()));
+ key = keyBuf.makeStringAndClear();
+ image = SkiaHelper::findCachedImage(key);
+ if (image)
+ {
+ assert(image->width() == targetSize.Width() && image->height() == targetSize.Height());
+ return image;
+ }
+ // Combine bitmap + alpha bitmap into one temporary bitmap with alpha.
+ // If scaling is needed, first apply the alpha, then scale, otherwise the scaling might affect the alpha values.
+ if (alphaBitmap && targetSize != bitmap.GetSize())
+ {
+ sk_sp<SkSurface> mergedSurface = SkiaHelper::createSkSurface(bitmap.GetSize());
+ if (!mergedSurface)
+ return nullptr;
+ SkPaint paint;
+ paint.setBlendMode(SkBlendMode::kSrc); // copy as is, including alpha
+ mergedSurface->getCanvas()->drawImage(bitmap.GetSkImage(), 0, 0, &paint);
+ paint.setBlendMode(SkBlendMode::kDstOut); // VCL alpha is one-minus-alpha
+ mergedSurface->getCanvas()->drawImage(alphaBitmap->GetAlphaSkImage(), 0, 0, &paint);
+ sk_sp<SkSurface> scaledSurface = SkiaHelper::createSkSurface(targetSize);
+ if (!scaledSurface)
+ return nullptr;
+ paint.setBlendMode(SkBlendMode::kSrc); // copy as is, including alpha
+ paint.setFilterQuality(kHigh_SkFilterQuality);
+ scaledSurface->getCanvas()->drawImageRect(
+ mergedSurface->makeImageSnapshot(),
+ SkRect::MakeXYWH(0, 0, bitmap.GetSize().Width(), bitmap.GetSize().Height()),
+ SkRect::MakeXYWH(0, 0, targetSize.Width(), targetSize.Height()), &paint);
+ image = scaledSurface->makeImageSnapshot();
+ }
+ else // No alpha or no scaling, scale directly.
+ {
+ sk_sp<SkSurface> tmpSurface = SkiaHelper::createSkSurface(targetSize);
+ if (!tmpSurface)
+ return nullptr;
+ SkCanvas* canvas = tmpSurface->getCanvas();
+ SkAutoCanvasRestore autoRestore(canvas, true);
+ SkPaint paint;
+ if (targetSize != bitmap.GetSize())
+ {
+ SkMatrix matrix;
+ matrix.set(SkMatrix::kMScaleX, 1.0 * targetSize.Width() / bitmap.GetSize().Width());
+ matrix.set(SkMatrix::kMScaleY, 1.0 * targetSize.Height() / bitmap.GetSize().Height());
+ canvas->concat(matrix);
+ paint.setFilterQuality(kHigh_SkFilterQuality);
+ }
+ paint.setBlendMode(SkBlendMode::kSrc); // copy as is, including alpha
+ canvas->drawImage(bitmap.GetSkImage(), 0, 0, &paint);
+ if (alphaBitmap != nullptr)
+ {
+ paint.setBlendMode(SkBlendMode::kDstOut); // VCL alpha is one-minus-alpha
+ canvas->drawImage(alphaBitmap->GetAlphaSkImage(), 0, 0, &paint);
+ }
+ image = SkiaHelper::makeCheckedImageSnapshot(tmpSurface);
+ }
+ SkiaHelper::addCachedImage(key, image);
+ return image;
+}
+
+bool SkiaSalGraphicsImpl::drawAlphaBitmap(const SalTwoRect& rPosAry, const SalBitmap& rSourceBitmap,
+ const SalBitmap& rAlphaBitmap)
+{
+ assert(dynamic_cast<const SkiaSalBitmap*>(&rSourceBitmap));
+ assert(dynamic_cast<const SkiaSalBitmap*>(&rAlphaBitmap));
+ // In raster mode use mergeCacheBitmaps(), which will cache the result, avoiding repeated
+ // alpha blending or scaling. In GPU mode it is simpler to just use SkShader.
+ SalTwoRect imagePosAry(rPosAry);
+ Size imageSize = rSourceBitmap.GetSize();
+ // If the bitmap will be scaled, prefer to do it in mergeCacheBitmaps(), if possible.
+ if ((rPosAry.mnSrcWidth != rPosAry.mnDestWidth || rPosAry.mnSrcHeight != rPosAry.mnDestHeight)
+ && rPosAry.mnSrcX == 0 && rPosAry.mnSrcY == 0
+ && rPosAry.mnSrcWidth == rSourceBitmap.GetSize().Width()
+ && rPosAry.mnSrcHeight == rSourceBitmap.GetSize().Height())
+ {
+ imagePosAry.mnSrcWidth = imagePosAry.mnDestWidth;
+ imagePosAry.mnSrcHeight = imagePosAry.mnDestHeight;
+ imageSize = Size(imagePosAry.mnSrcWidth, imagePosAry.mnSrcHeight);
+ }
+ sk_sp<SkImage> image
+ = mergeCacheBitmaps(static_cast<const SkiaSalBitmap&>(rSourceBitmap),
+ static_cast<const SkiaSalBitmap*>(&rAlphaBitmap), imageSize);
+ if (image)
+ drawImage(imagePosAry, image);
+ else
+ drawShader(
+ rPosAry,
+ SkShaders::Blend(
+ SkBlendMode::kDstOut, // VCL alpha is one-minus-alpha.
+ static_cast<const SkiaSalBitmap&>(rSourceBitmap).GetSkImage()->makeShader(),
+ static_cast<const SkiaSalBitmap*>(&rAlphaBitmap)->GetAlphaSkImage()->makeShader()));
+ return true;
+}
+
+void SkiaSalGraphicsImpl::drawImage(const SalTwoRect& rPosAry, const sk_sp<SkImage>& aImage,
+ SkBlendMode eBlendMode)
+{
+ SkRect aSourceRect
+ = SkRect::MakeXYWH(rPosAry.mnSrcX, rPosAry.mnSrcY, rPosAry.mnSrcWidth, rPosAry.mnSrcHeight);
+ SkRect aDestinationRect = SkRect::MakeXYWH(rPosAry.mnDestX, rPosAry.mnDestY,
+ rPosAry.mnDestWidth, rPosAry.mnDestHeight);
+
+ SkPaint aPaint;
+ aPaint.setBlendMode(eBlendMode);
+ if (rPosAry.mnSrcWidth != rPosAry.mnDestWidth || rPosAry.mnSrcHeight != rPosAry.mnDestHeight)
+ aPaint.setFilterQuality(kHigh_SkFilterQuality);
+
+ preDraw();
+ SAL_INFO("vcl.skia.trace",
+ "drawimage(" << this << "): " << rPosAry << ":" << SkBlendMode_Name(eBlendMode));
+ addXorRegion(aDestinationRect);
+ getDrawCanvas()->drawImageRect(aImage, aSourceRect, aDestinationRect, &aPaint);
+ postDraw();
+}
+
+// SkShader can be used to merge multiple bitmaps with appropriate blend modes (e.g. when
+// merging a bitmap with its alpha mask).
+void SkiaSalGraphicsImpl::drawShader(const SalTwoRect& rPosAry, const sk_sp<SkShader>& shader)
+{
+ preDraw();
+ SAL_INFO("vcl.skia.trace", "drawshader(" << this << "): " << rPosAry);
+ SkRect destinationRect = SkRect::MakeXYWH(rPosAry.mnDestX, rPosAry.mnDestY, rPosAry.mnDestWidth,
+ rPosAry.mnDestHeight);
+ addXorRegion(destinationRect);
+ SkPaint paint;
+ paint.setShader(shader);
+ if (rPosAry.mnSrcWidth != rPosAry.mnDestWidth || rPosAry.mnSrcHeight != rPosAry.mnDestHeight)
+ paint.setFilterQuality(kHigh_SkFilterQuality);
+ SkCanvas* canvas = getDrawCanvas();
+ // Scaling needs to be done explicitly using a matrix.
+ SkAutoCanvasRestore autoRestore(canvas, true);
+ SkMatrix matrix = SkMatrix::Translate(rPosAry.mnDestX, rPosAry.mnDestY)
+ * SkMatrix::Scale(1.0 * rPosAry.mnDestWidth / rPosAry.mnSrcWidth,
+ 1.0 * rPosAry.mnDestHeight / rPosAry.mnSrcHeight)
+ * SkMatrix::Translate(-rPosAry.mnSrcX, -rPosAry.mnSrcY);
+ assert(matrix.mapXY(rPosAry.mnSrcX, rPosAry.mnSrcY)
+ == SkPoint::Make(rPosAry.mnDestX, rPosAry.mnDestY));
+ assert(matrix.mapXY(rPosAry.mnSrcX + rPosAry.mnSrcWidth, rPosAry.mnSrcY + rPosAry.mnSrcHeight)
+ == SkPoint::Make(rPosAry.mnDestX + rPosAry.mnDestWidth,
+ rPosAry.mnDestY + rPosAry.mnDestHeight));
+ canvas->concat(matrix);
+ SkRect sourceRect
+ = SkRect::MakeXYWH(rPosAry.mnSrcX, rPosAry.mnSrcY, rPosAry.mnSrcWidth, rPosAry.mnSrcHeight);
+ canvas->drawRect(sourceRect, paint);
+ postDraw();
+}
+
+bool SkiaSalGraphicsImpl::drawTransformedBitmap(const basegfx::B2DPoint& rNull,
+ const basegfx::B2DPoint& rX,
+ const basegfx::B2DPoint& rY,
+ const SalBitmap& rSourceBitmap,
+ const SalBitmap* pAlphaBitmap)
+{
+ assert(dynamic_cast<const SkiaSalBitmap*>(&rSourceBitmap));
+ assert(!pAlphaBitmap || dynamic_cast<const SkiaSalBitmap*>(pAlphaBitmap));
+
+ const SkiaSalBitmap& rSkiaBitmap = static_cast<const SkiaSalBitmap&>(rSourceBitmap);
+ const SkiaSalBitmap* pSkiaAlphaBitmap = static_cast<const SkiaSalBitmap*>(pAlphaBitmap);
+
+ // Setup the image transformation,
+ // using the rNull, rX, rY points as destinations for the (0,0), (Width,0), (0,Height) source points.
+ const basegfx::B2DVector aXRel = rX - rNull;
+ const basegfx::B2DVector aYRel = rY - rNull;
+
+ preDraw();
+ SAL_INFO("vcl.skia.trace", "drawtransformedbitmap(" << this << "): " << rSourceBitmap.GetSize()
+ << " " << rNull << ":" << rX << ":" << rY);
+
+ addXorRegion(SkRect::MakeWH(GetWidth(), GetHeight())); // can't tell, use whole area
+ // In raster mode scaling and alpha blending is still somewhat expensive if done repeatedly,
+ // so use mergeCacheBitmaps(), which will cache the result if useful.
+ // It is better to use SkShader if in GPU mode, if the operation is simple or if the temporary
+ // image would be very large.
+ sk_sp<SkImage> imageToDraw = mergeCacheBitmaps(
+ rSkiaBitmap, pSkiaAlphaBitmap, Size(round(aXRel.getLength()), round(aYRel.getLength())));
+ if (imageToDraw)
+ {
+ SkMatrix matrix;
+ // Round sizes for scaling, so that sub-pixel differences don't
+ // trigger unnecessary scaling. Image has already been scaled
+ // by mergeCacheBitmaps() and we shouldn't scale here again
+ // unless the drawing is also skewed.
+ matrix.set(SkMatrix::kMScaleX, round(aXRel.getX()) / imageToDraw->width());
+ matrix.set(SkMatrix::kMScaleY, round(aYRel.getY()) / imageToDraw->height());
+ matrix.set(SkMatrix::kMSkewY, aXRel.getY() / imageToDraw->width());
+ matrix.set(SkMatrix::kMSkewX, aYRel.getX() / imageToDraw->height());
+ matrix.set(SkMatrix::kMTransX, rNull.getX());
+ matrix.set(SkMatrix::kMTransY, rNull.getY());
+ SkCanvas* canvas = getDrawCanvas();
+ SkAutoCanvasRestore autoRestore(canvas, true);
+ canvas->concat(matrix);
+ SkPaint paint;
+ paint.setFilterQuality(kHigh_SkFilterQuality);
+ canvas->drawImage(imageToDraw, 0, 0, &paint);
+ }
+ else
+ {
+ SkMatrix matrix;
+ const Size aSize = rSourceBitmap.GetSize();
+ matrix.set(SkMatrix::kMScaleX, aXRel.getX() / aSize.Width());
+ matrix.set(SkMatrix::kMScaleY, aYRel.getY() / aSize.Height());
+ matrix.set(SkMatrix::kMSkewY, aXRel.getY() / aSize.Width());
+ matrix.set(SkMatrix::kMSkewX, aYRel.getX() / aSize.Height());
+ matrix.set(SkMatrix::kMTransX, rNull.getX());
+ matrix.set(SkMatrix::kMTransY, rNull.getY());
+ SkCanvas* canvas = getDrawCanvas();
+ SkAutoCanvasRestore autoRestore(canvas, true);
+ canvas->concat(matrix);
+ SkPaint paint;
+ paint.setFilterQuality(kHigh_SkFilterQuality);
+ if (pSkiaAlphaBitmap)
+ {
+ paint.setShader(SkShaders::Blend(SkBlendMode::kDstOut, // VCL alpha is one-minus-alpha.
+ rSkiaBitmap.GetSkImage()->makeShader(),
+ pSkiaAlphaBitmap->GetAlphaSkImage()->makeShader()));
+ canvas->drawRect(SkRect::MakeWH(aSize.Width(), aSize.Height()), paint);
+ }
+ else
+ {
+ canvas->drawImage(rSkiaBitmap.GetSkImage(), 0, 0, &paint);
+ }
+ }
+ postDraw();
+ return true;
+}
+
+bool SkiaSalGraphicsImpl::drawAlphaRect(long nX, long nY, long nWidth, long nHeight,
+ sal_uInt8 nTransparency)
+{
+ privateDrawAlphaRect(nX, nY, nWidth, nHeight, nTransparency / 100.0);
+ return true;
+}
+
+bool SkiaSalGraphicsImpl::drawGradient(const tools::PolyPolygon&, const Gradient&)
+{
+ // TODO?
+ return false;
+}
+
+static double toRadian(int degree10th) { return (3600 - degree10th) * M_PI / 1800.0; }
+static double toCos(int degree10th) { return SkScalarCos(toRadian(degree10th)); }
+static double toSin(int degree10th) { return SkScalarSin(toRadian(degree10th)); }
+
+void SkiaSalGraphicsImpl::drawGenericLayout(const GenericSalLayout& layout, Color textColor,
+ const SkFont& font, GlyphOrientation glyphOrientation)
+{
+ SkiaZone zone;
+ std::vector<SkGlyphID> glyphIds;
+ std::vector<SkRSXform> glyphForms;
+ glyphIds.reserve(256);
+ glyphForms.reserve(256);
+ Point aPos;
+ const GlyphItem* pGlyph;
+ int nStart = 0;
+ while (layout.GetNextGlyph(&pGlyph, aPos, nStart))
+ {
+ glyphIds.push_back(pGlyph->glyphId());
+ int angle = 0; // 10th of degree
+ if (glyphOrientation == GlyphOrientation::Apply)
+ {
+ angle = layout.GetOrientation();
+ if (pGlyph->IsVertical())
+ angle += 900; // 90 degree
+ }
+ SkRSXform form = SkRSXform::Make(toCos(angle), toSin(angle), aPos.X(), aPos.Y());
+ glyphForms.emplace_back(std::move(form));
+ }
+ if (glyphIds.empty())
+ return;
+ sk_sp<SkTextBlob> textBlob
+ = SkTextBlob::MakeFromRSXform(glyphIds.data(), glyphIds.size() * sizeof(SkGlyphID),
+ glyphForms.data(), font, SkTextEncoding::kGlyphID);
+ preDraw();
+ SAL_INFO("vcl.skia.trace",
+ "drawtextblob(" << this << "): " << textBlob->bounds() << ":" << textColor);
+ addXorRegion(textBlob->bounds());
+ SkPaint paint;
+ paint.setColor(toSkColor(textColor));
+ getDrawCanvas()->drawTextBlob(textBlob, 0, 0, paint);
+ postDraw();
+}
+
+bool SkiaSalGraphicsImpl::supportsOperation(OutDevSupportType eType) const
+{
+ switch (eType)
+ {
+ case OutDevSupportType::B2DDraw:
+ case OutDevSupportType::TransparentRect:
+ return true;
+ default:
+ return false;
+ }
+}
+
+#ifdef DBG_UTIL
+void SkiaSalGraphicsImpl::dump(const char* file) const
+{
+ assert(mSurface.get());
+ SkiaHelper::dump(mSurface, file);
+}
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/skia/salbmp.cxx b/vcl/skia/salbmp.cxx
new file mode 100644
index 000000000..0f62f7dc5
--- /dev/null
+++ b/vcl/skia/salbmp.cxx
@@ -0,0 +1,819 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <skia/salbmp.hxx>
+
+#include <o3tl/safeint.hxx>
+#include <tools/helpers.hxx>
+#include <boost/smart_ptr/make_shared.hpp>
+
+#include <salgdi.hxx>
+#include <salinst.hxx>
+#include <scanlinewriter.hxx>
+#include <svdata.hxx>
+
+#include <SkCanvas.h>
+#include <SkImage.h>
+#include <SkPixelRef.h>
+#include <SkSurface.h>
+#include <SkSwizzle.h>
+#include <SkColorFilter.h>
+#include <SkColorMatrix.h>
+
+#include <skia/utils.hxx>
+#include <skia/zone.hxx>
+
+#ifdef DBG_UTIL
+#include <fstream>
+#define CANARY "skia-canary"
+#endif
+
+SkiaSalBitmap::SkiaSalBitmap() {}
+
+SkiaSalBitmap::~SkiaSalBitmap() {}
+
+static bool isValidBitCount(sal_uInt16 nBitCount)
+{
+ return (nBitCount == 1) || (nBitCount == 4) || (nBitCount == 8) || (nBitCount == 24)
+ || (nBitCount == 32);
+}
+
+SkiaSalBitmap::SkiaSalBitmap(const sk_sp<SkImage>& image)
+{
+ ResetCachedData();
+ mBuffer.reset();
+ mImage = image;
+ mPalette = BitmapPalette();
+ mBitCount = 32;
+ mSize = mPixelsSize = Size(image->width(), image->height());
+#ifdef DBG_UTIL
+ mWriteAccessCount = 0;
+#endif
+ SAL_INFO("vcl.skia.trace", "bitmapfromimage(" << this << ")");
+}
+
+bool SkiaSalBitmap::Create(const Size& rSize, sal_uInt16 nBitCount, const BitmapPalette& rPal)
+{
+ ResetCachedData();
+ mBuffer.reset();
+ if (!isValidBitCount(nBitCount))
+ return false;
+ mPalette = rPal;
+ mBitCount = nBitCount;
+ mSize = mPixelsSize = rSize;
+#ifdef DBG_UTIL
+ mWriteAccessCount = 0;
+#endif
+ if (!CreateBitmapData())
+ {
+ mBitCount = 0;
+ mSize = mPixelsSize = Size();
+ mPalette = BitmapPalette();
+ return false;
+ }
+ SAL_INFO("vcl.skia.trace", "create(" << this << ")");
+ return true;
+}
+
+bool SkiaSalBitmap::CreateBitmapData()
+{
+ assert(!mBuffer);
+ // The pixels could be stored in SkBitmap, but Skia only supports 8bit gray, 16bit and 32bit formats
+ // (e.g. 24bpp is actually stored as 32bpp). But some of our code accessing the bitmap assumes that
+ // when it asked for 24bpp, the format really will be 24bpp (e.g. the png loader), so we cannot use
+ // SkBitmap to store the data. And even 8bpp is problematic, since Skia does not support palettes
+ // and a VCL bitmap can change its grayscale status simply by changing the palette.
+ // Moreover creating SkImage from SkBitmap does a data copy unless the bitmap is immutable.
+ // So just always store pixels in our buffer and convert as necessary.
+ int bitScanlineWidth;
+ if (o3tl::checked_multiply<int>(mSize.Width(), mBitCount, bitScanlineWidth))
+ {
+ SAL_WARN("vcl.skia", "checked multiply failed");
+ return false;
+ }
+ mScanlineSize = AlignedWidth4Bytes(bitScanlineWidth);
+ if (mScanlineSize != 0 && mSize.Height() != 0)
+ {
+ size_t allocate = mScanlineSize * mSize.Height();
+#ifdef DBG_UTIL
+ allocate += sizeof(CANARY);
+#endif
+ mBuffer = boost::make_shared_noinit<sal_uInt8[]>(allocate);
+#ifdef DBG_UTIL
+ // fill with random garbage
+ sal_uInt8* buffer = mBuffer.get();
+ for (size_t i = 0; i < allocate; i++)
+ buffer[i] = (i & 0xFF);
+ memcpy(buffer + allocate - sizeof(CANARY), CANARY, sizeof(CANARY));
+#endif
+ }
+ return true;
+}
+
+bool SkiaSalBitmap::Create(const SalBitmap& rSalBmp)
+{
+ return Create(rSalBmp, rSalBmp.GetBitCount());
+}
+
+bool SkiaSalBitmap::Create(const SalBitmap& rSalBmp, SalGraphics* pGraphics)
+{
+ return Create(rSalBmp, pGraphics ? pGraphics->GetBitCount() : rSalBmp.GetBitCount());
+}
+
+bool SkiaSalBitmap::Create(const SalBitmap& rSalBmp, sal_uInt16 nNewBitCount)
+{
+ const SkiaSalBitmap& src = static_cast<const SkiaSalBitmap&>(rSalBmp);
+ mImage = src.mImage;
+ mAlphaImage = src.mAlphaImage;
+ mBuffer = src.mBuffer;
+ mPalette = src.mPalette;
+ mBitCount = src.mBitCount;
+ mSize = src.mSize;
+ mPixelsSize = src.mPixelsSize;
+ mScanlineSize = src.mScanlineSize;
+ mScaleQuality = src.mScaleQuality;
+#ifdef DBG_UTIL
+ mWriteAccessCount = 0;
+#endif
+ if (nNewBitCount != src.GetBitCount())
+ {
+ // This appears to be unused(?). Implement this just in case, but be lazy
+ // about it and rely on EnsureBitmapData() doing the conversion from mImage
+ // if needed, even if that may need unnecessary to- and from- SkImage
+ // conversion.
+ ResetToSkImage(GetSkImage());
+ }
+ SAL_INFO("vcl.skia.trace", "create(" << this << "): (" << &src << ")");
+ return true;
+}
+
+bool SkiaSalBitmap::Create(const css::uno::Reference<css::rendering::XBitmapCanvas>&, Size&, bool)
+{
+ // TODO?
+ return false;
+}
+
+void SkiaSalBitmap::Destroy()
+{
+ SAL_INFO("vcl.skia.trace", "destroy(" << this << ")");
+#ifdef DBG_UTIL
+ assert(mWriteAccessCount == 0);
+#endif
+ ResetCachedData();
+ mBuffer.reset();
+}
+
+Size SkiaSalBitmap::GetSize() const { return mSize; }
+
+sal_uInt16 SkiaSalBitmap::GetBitCount() const { return mBitCount; }
+
+BitmapBuffer* SkiaSalBitmap::AcquireBuffer(BitmapAccessMode nMode)
+{
+ switch (nMode)
+ {
+ case BitmapAccessMode::Write:
+ EnsureBitmapUniqueData();
+ if (!mBuffer)
+ return nullptr;
+ break;
+ case BitmapAccessMode::Read:
+ EnsureBitmapData();
+ if (!mBuffer)
+ return nullptr;
+ break;
+ case BitmapAccessMode::Info:
+ break;
+ }
+#ifdef DBG_UTIL
+ // BitmapWriteAccess stores also a copy of the palette and it can
+ // be modified, so concurrent reading of it might result in inconsistencies.
+ assert(mWriteAccessCount == 0 || nMode == BitmapAccessMode::Write);
+#endif
+ BitmapBuffer* buffer = new BitmapBuffer;
+ buffer->mnWidth = mSize.Width();
+ buffer->mnHeight = mSize.Height();
+ buffer->mnBitCount = mBitCount;
+ buffer->maPalette = mPalette;
+ buffer->mpBits = mBuffer.get();
+ buffer->mnScanlineSize = mScanlineSize;
+ switch (mBitCount)
+ {
+ case 1:
+ buffer->mnFormat = ScanlineFormat::N1BitMsbPal;
+ break;
+ case 4:
+ buffer->mnFormat = ScanlineFormat::N4BitMsnPal;
+ break;
+ case 8:
+ buffer->mnFormat = ScanlineFormat::N8BitPal;
+ break;
+ case 24:
+ {
+// Make the RGB/BGR format match the default Skia 32bpp format, to allow
+// easy conversion later.
+// Use a macro to hide an unreachable code warning.
+#define GET_FORMAT \
+ (kN32_SkColorType == kBGRA_8888_SkColorType ? ScanlineFormat::N24BitTcBgr \
+ : ScanlineFormat::N24BitTcRgb)
+ buffer->mnFormat = GET_FORMAT;
+#undef GET_FORMAT
+ break;
+ }
+ case 32:
+#define GET_FORMAT \
+ (kN32_SkColorType == kBGRA_8888_SkColorType ? ScanlineFormat::N32BitTcBgra \
+ : ScanlineFormat::N32BitTcRgba)
+ buffer->mnFormat = GET_FORMAT;
+#undef GET_FORMAT
+ break;
+ default:
+ abort();
+ }
+ buffer->mnFormat |= ScanlineFormat::TopDown;
+#ifdef DBG_UTIL
+ if (nMode == BitmapAccessMode::Write)
+ ++mWriteAccessCount;
+#endif
+ return buffer;
+}
+
+void SkiaSalBitmap::ReleaseBuffer(BitmapBuffer* pBuffer, BitmapAccessMode nMode)
+{
+ if (nMode == BitmapAccessMode::Write)
+ {
+#ifdef DBG_UTIL
+ assert(mWriteAccessCount > 0);
+ --mWriteAccessCount;
+#endif
+ mPalette = pBuffer->maPalette;
+ ResetCachedData();
+ }
+ // Are there any more ground movements underneath us ?
+ assert(pBuffer->mnWidth == mSize.Width());
+ assert(pBuffer->mnHeight == mSize.Height());
+ assert(pBuffer->mnBitCount == mBitCount);
+ verify();
+ delete pBuffer;
+}
+
+bool SkiaSalBitmap::GetSystemData(BitmapSystemData&)
+{
+#ifdef DBG_UTIL
+ assert(mWriteAccessCount == 0);
+#endif
+ // TODO?
+ return false;
+}
+
+bool SkiaSalBitmap::ScalingSupported() const { return true; }
+
+bool SkiaSalBitmap::Scale(const double& rScaleX, const double& rScaleY, BmpScaleFlag nScaleFlag)
+{
+ SkiaZone zone;
+#ifdef DBG_UTIL
+ assert(mWriteAccessCount == 0);
+#endif
+ Size newSize(FRound(mSize.Width() * rScaleX), FRound(mSize.Height() * rScaleY));
+ if (mSize == newSize)
+ return true;
+
+ SAL_INFO("vcl.skia.trace", "scale(" << this << "): " << mSize << "/" << mBitCount << "->"
+ << newSize << ":" << static_cast<int>(nScaleFlag));
+
+ // The idea here is that the actual scaling will be delayed until the result
+ // is actually needed. Usually the scaled bitmap will be drawn somewhere,
+ // so delaying will mean the scaling can be done as a part of GetSkImage().
+ // That means it can be GPU-accelerated, while done here directly it would need
+ // to be either done by CPU, or with the CPU->GPU->CPU roundtrip required
+ // by GPU-accelerated scaling.
+ // Pending scaling is detected by 'mSize != mPixelsSize'.
+ SkFilterQuality currentQuality;
+ switch (nScaleFlag)
+ {
+ case BmpScaleFlag::Fast:
+ currentQuality = kNone_SkFilterQuality;
+ break;
+ case BmpScaleFlag::Default:
+ currentQuality = kMedium_SkFilterQuality;
+ break;
+ case BmpScaleFlag::BestQuality:
+ currentQuality = kHigh_SkFilterQuality;
+ break;
+ default:
+ SAL_INFO("vcl.skia.trace", "scale(" << this << "): unsupported scale algorithm");
+ return false;
+ }
+ if (mBitCount < 24 && !mPalette.IsGreyPalette8Bit())
+ {
+ // Scaling can introduce additional colors not present in the original
+ // bitmap (e.g. when smoothing). If the bitmap is indexed (has non-trivial palette),
+ // this would break the bitmap, because the actual scaling is done only somewhen later.
+ // Linear 8bit palette (grey) is ok, since there we use directly the values as colors.
+ SAL_INFO("vcl.skia.trace", "scale(" << this << "): indexed bitmap");
+ return false;
+ }
+ // if there is already one scale() pending, use the lowest quality of all requested
+ static_assert(kMedium_SkFilterQuality < kHigh_SkFilterQuality);
+ mScaleQuality = std::min(mScaleQuality, currentQuality);
+ // scaling will be actually done on-demand when needed, the need will be recognized
+ // by mSize != mPixelsSize
+ mSize = newSize;
+ // Do not reset cached data if mImage is possibly the only data we have.
+ if (mBuffer)
+ ResetCachedData();
+ // The rest will be handled when the scaled bitmap is actually needed,
+ // such as in EnsureBitmapData() or GetSkImage().
+ return true;
+}
+
+bool SkiaSalBitmap::Replace(const Color&, const Color&, sal_uInt8)
+{
+#ifdef DBG_UTIL
+ assert(mWriteAccessCount == 0);
+#endif
+ // TODO?
+ return false;
+}
+
+bool SkiaSalBitmap::ConvertToGreyscale()
+{
+#ifdef DBG_UTIL
+ assert(mWriteAccessCount == 0);
+#endif
+ // Normally this would need to convert contents of mBuffer for all possible formats,
+ // so just let the VCL algorithm do it.
+ // Avoid the costly SkImage->buffer->SkImage conversion.
+ if (!mBuffer && mImage)
+ {
+ if (mBitCount == 8 && mPalette.IsGreyPalette8Bit())
+ return true;
+ sk_sp<SkSurface> surface = SkiaHelper::createSkSurface(mPixelsSize);
+ SkPaint paint;
+ paint.setBlendMode(SkBlendMode::kSrc); // set as is, including alpha
+ // VCL uses different coefficients for conversion to gray than Skia, so use the VCL
+ // values from Bitmap::ImplMakeGreyscales(). Do not use kGray_8_SkColorType,
+ // Skia would use its gray conversion formula.
+ // NOTE: The matrix is 4x5 organized as columns (i.e. each line is a column, not a row).
+ constexpr SkColorMatrix toGray(77 / 256.0, 151 / 256.0, 28 / 256.0, 0, 0, // R column
+ 77 / 256.0, 151 / 256.0, 28 / 256.0, 0, 0, // G column
+ 77 / 256.0, 151 / 256.0, 28 / 256.0, 0, 0, // B column
+ 0, 0, 0, 1, 0); // don't modify alpha
+ paint.setColorFilter(SkColorFilters::Matrix(toGray));
+ surface->getCanvas()->drawImage(mImage, 0, 0, &paint);
+ mBitCount = 8;
+ mPalette = Bitmap::GetGreyPalette(256);
+ ResetToSkImage(SkiaHelper::makeCheckedImageSnapshot(surface));
+ SAL_INFO("vcl.skia.trace", "converttogreyscale(" << this << ")");
+ return true;
+ }
+ return false;
+}
+
+bool SkiaSalBitmap::InterpretAs8Bit()
+{
+#ifdef DBG_UTIL
+ assert(mWriteAccessCount == 0);
+#endif
+ if (mBitCount == 8 && mPalette.IsGreyPalette8Bit())
+ return true;
+ // This is usually used by AlphaMask, the point is just to treat
+ // the content as an alpha channel. This is often used
+ // by the horrible separate-alpha-outdev hack, where the bitmap comes
+ // from SkiaSalGraphicsImpl::GetBitmap(), so only mImage is set,
+ // and that is followed by a later call to GetAlphaSkImage().
+ // Avoid the costly SkImage->buffer->SkImage conversion and simply
+ // just treat the SkImage as being for 8bit bitmap. EnsureBitmapData()
+ // will do the conversion if needed, but the normal case will be
+ // GetAlphaSkImage() creating kAlpha_8_SkColorType SkImage from it.
+ if (!mBuffer && mImage)
+ {
+ mBitCount = 8;
+ mPalette = Bitmap::GetGreyPalette(256);
+ ResetToSkImage(mImage); // keep mImage, it will be interpreted as 8bit if needed
+ SAL_INFO("vcl.skia.trace", "interpretas8bit(" << this << ")");
+ return true;
+ }
+ return false;
+}
+
+SkBitmap SkiaSalBitmap::GetAsSkBitmap() const
+{
+#ifdef DBG_UTIL
+ assert(mWriteAccessCount == 0);
+#endif
+ EnsureBitmapData();
+ assert(mSize == mPixelsSize); // data has already been scaled if needed
+ SkiaZone zone;
+ SkBitmap bitmap;
+ if (mBuffer)
+ {
+ if (mBitCount == 32)
+ {
+ // Make a copy, the bitmap should be immutable (otherwise converting it
+ // to SkImage will make a copy anyway).
+ const size_t bytes = mPixelsSize.Height() * mScanlineSize;
+ std::unique_ptr<sal_uInt8[]> data(new sal_uInt8[bytes]);
+ memcpy(data.get(), mBuffer.get(), bytes);
+#if SKIA_USE_BITMAP32
+ SkAlphaType alphaType = kPremul_SkAlphaType;
+#else
+ SkAlphaType alphaType = kUnpremul_SkAlphaType;
+#endif
+ if (!bitmap.installPixels(
+ SkImageInfo::MakeS32(mPixelsSize.Width(), mPixelsSize.Height(), alphaType),
+ data.release(), mPixelsSize.Width() * 4,
+ [](void* addr, void*) { delete[] static_cast<sal_uInt8*>(addr); }, nullptr))
+ abort();
+ bitmap.setImmutable();
+ }
+ else if (mBitCount == 24)
+ {
+ // Convert 24bpp RGB/BGR to 32bpp RGBA/BGRA.
+ std::unique_ptr<uint32_t[]> data(
+ new uint32_t[mPixelsSize.Height() * mPixelsSize.Width()]);
+ uint32_t* dest = data.get();
+ for (long y = 0; y < mPixelsSize.Height(); ++y)
+ {
+ const sal_uInt8* src = mBuffer.get() + mScanlineSize * y;
+ // This also works as BGR to BGRA (the function extends 3 bytes to 4
+ // by adding 0xFF alpha, so position of B and R doesn't matter).
+ SkExtendRGBToRGBA(dest, src, mPixelsSize.Width());
+ dest += mPixelsSize.Width();
+ }
+ if (!bitmap.installPixels(
+ SkImageInfo::MakeS32(mPixelsSize.Width(), mPixelsSize.Height(),
+ kOpaque_SkAlphaType),
+ data.release(), mPixelsSize.Width() * 4,
+ [](void* addr, void*) { delete[] static_cast<sal_uInt8*>(addr); }, nullptr))
+ abort();
+ bitmap.setImmutable();
+ }
+ // Skia has a format for 8bit grayscale SkBitmap, but it seems to cause a problem
+ // with our PNG loader (tdf#121120), so convert it to RGBA below as well.
+ else
+ {
+// Use a macro to hide an unreachable code warning.
+#define GET_FORMAT \
+ (kN32_SkColorType == kBGRA_8888_SkColorType ? BitConvert::BGRA : BitConvert::RGBA)
+ std::unique_ptr<sal_uInt8[]> data
+ = convertDataBitCount(mBuffer.get(), mPixelsSize.Width(), mPixelsSize.Height(),
+ mBitCount, mScanlineSize, mPalette, GET_FORMAT);
+#undef GET_FORMAT
+ if (!bitmap.installPixels(
+ SkImageInfo::MakeS32(mPixelsSize.Width(), mPixelsSize.Height(),
+ kOpaque_SkAlphaType),
+ data.release(), mPixelsSize.Width() * 4,
+ [](void* addr, void*) { delete[] static_cast<sal_uInt8*>(addr); }, nullptr))
+ abort();
+ bitmap.setImmutable();
+ }
+ }
+ return bitmap;
+}
+
+const sk_sp<SkImage>& SkiaSalBitmap::GetSkImage() const
+{
+#ifdef DBG_UTIL
+ assert(mWriteAccessCount == 0);
+#endif
+ if (mPixelsSize != mSize && !mImage
+ && SkiaHelper::renderMethodToUse() != SkiaHelper::RenderRaster)
+ {
+ // The bitmap has a pending scaling, but no image. This function would below call GetAsSkBitmap(),
+ // which would do CPU-based pixel scaling, and then it would get converted to an image.
+ // Be more efficient, first convert to an image and then the block below will scale on the GPU.
+ SAL_INFO("vcl.skia.trace", "getskimage(" << this << "): shortcut image scaling "
+ << mPixelsSize << "->" << mSize);
+ SkiaSalBitmap* thisPtr = const_cast<SkiaSalBitmap*>(this);
+ Size savedSize = mSize;
+ thisPtr->mSize = mPixelsSize; // block scaling
+ SkiaZone zone;
+ sk_sp<SkImage> image = SkiaHelper::createSkImage(GetAsSkBitmap());
+ assert(image);
+ thisPtr->mSize = savedSize;
+ thisPtr->ResetToSkImage(image);
+ }
+ if (mImage)
+ {
+ if (mImage->width() != mSize.Width() || mImage->height() != mSize.Height())
+ {
+ assert(!mBuffer); // This code should be only called if only mImage holds data.
+ SkiaZone zone;
+ sk_sp<SkSurface> surface = SkiaHelper::createSkSurface(mSize);
+ assert(surface);
+ SkPaint paint;
+ paint.setBlendMode(SkBlendMode::kSrc); // set as is, including alpha
+ paint.setFilterQuality(mScaleQuality);
+ surface->getCanvas()->drawImageRect(
+ mImage, SkRect::MakeWH(mImage->width(), mImage->height()),
+ SkRect::MakeWH(mSize.Width(), mSize.Height()), &paint);
+ SAL_INFO("vcl.skia.trace", "getskimage(" << this << "): image scaled "
+ << Size(mImage->width(), mImage->height())
+ << "->" << mSize << ":"
+ << static_cast<int>(mScaleQuality));
+ SkiaSalBitmap* thisPtr = const_cast<SkiaSalBitmap*>(this);
+ thisPtr->mImage = SkiaHelper::makeCheckedImageSnapshot(surface);
+ }
+ return mImage;
+ }
+ SkiaZone zone;
+ sk_sp<SkImage> image = SkiaHelper::createSkImage(GetAsSkBitmap());
+ assert(image);
+ const_cast<sk_sp<SkImage>&>(mImage) = image;
+ SAL_INFO("vcl.skia.trace", "getskimage(" << this << ")");
+ return mImage;
+}
+
+const sk_sp<SkImage>& SkiaSalBitmap::GetAlphaSkImage() const
+{
+#ifdef DBG_UTIL
+ assert(mWriteAccessCount == 0);
+#endif
+ if (mAlphaImage)
+ {
+ assert(mSize == mPixelsSize); // data has already been scaled if needed
+ return mAlphaImage;
+ }
+ if (mImage)
+ {
+ SkiaZone zone;
+ sk_sp<SkSurface> surface = SkiaHelper::createSkSurface(mSize, kAlpha_8_SkColorType);
+ assert(surface);
+ SkPaint paint;
+ paint.setBlendMode(SkBlendMode::kSrc); // set as is, including alpha
+ // Move the R channel value to the alpha channel. This seems to be the only
+ // way to reinterpret data in SkImage as an alpha SkImage without accessing the pixels.
+ // NOTE: The matrix is 4x5 organized as columns (i.e. each line is a column, not a row).
+ constexpr SkColorMatrix redToAlpha(0, 0, 0, 0, 0, // R column
+ 0, 0, 0, 0, 0, // G column
+ 0, 0, 0, 0, 0, // B column
+ 1, 0, 0, 0, 0); // A column
+ paint.setColorFilter(SkColorFilters::Matrix(redToAlpha));
+ bool scaling = mImage->width() != mSize.Width() || mImage->height() != mSize.Height();
+ if (scaling)
+ {
+ assert(!mBuffer); // This code should be only called if only mImage holds data.
+ paint.setFilterQuality(mScaleQuality);
+ }
+ surface->getCanvas()->drawImageRect(mImage,
+ SkRect::MakeWH(mImage->width(), mImage->height()),
+ SkRect::MakeWH(mSize.Width(), mSize.Height()), &paint);
+ if (scaling)
+ SAL_INFO("vcl.skia.trace", "getalphaskimage(" << this << "): image scaled "
+ << Size(mImage->width(), mImage->height())
+ << "->" << mSize << ":"
+ << static_cast<int>(mScaleQuality));
+ else
+ SAL_INFO("vcl.skia.trace", "getalphaskimage(" << this << ") from image");
+ SkiaSalBitmap* thisPtr = const_cast<SkiaSalBitmap*>(this);
+ thisPtr->mAlphaImage = SkiaHelper::makeCheckedImageSnapshot(surface);
+ return mAlphaImage;
+ }
+ SkiaZone zone;
+ EnsureBitmapData();
+ assert(mSize == mPixelsSize); // data has already been scaled if needed
+ SkBitmap alphaBitmap;
+ if (mBuffer && mBitCount <= 8)
+ {
+ assert(mBuffer.get());
+ verify();
+ std::unique_ptr<sal_uInt8[]> data
+ = convertDataBitCount(mBuffer.get(), mSize.Width(), mSize.Height(), mBitCount,
+ mScanlineSize, mPalette, BitConvert::A8);
+ if (!alphaBitmap.installPixels(
+ SkImageInfo::MakeA8(mSize.Width(), mSize.Height()), data.release(), mSize.Width(),
+ [](void* addr, void*) { delete[] static_cast<sal_uInt8*>(addr); }, nullptr))
+ abort();
+ alphaBitmap.setImmutable();
+ sk_sp<SkImage> image = SkiaHelper::createSkImage(alphaBitmap);
+ assert(image);
+ const_cast<sk_sp<SkImage>&>(mAlphaImage) = image;
+ }
+ else
+ {
+ sk_sp<SkSurface> surface = SkiaHelper::createSkSurface(mSize, kAlpha_8_SkColorType);
+ assert(surface);
+ SkPaint paint;
+ paint.setBlendMode(SkBlendMode::kSrc); // set as is, including alpha
+ // Move the R channel value to the alpha channel. This seems to be the only
+ // way to reinterpret data in SkImage as an alpha SkImage without accessing the pixels.
+ // NOTE: The matrix is 4x5 organized as columns (i.e. each line is a column, not a row).
+ constexpr SkColorMatrix redToAlpha(0, 0, 0, 0, 0, // R column
+ 0, 0, 0, 0, 0, // G column
+ 0, 0, 0, 0, 0, // B column
+ 1, 0, 0, 0, 0); // A column
+ paint.setColorFilter(SkColorFilters::Matrix(redToAlpha));
+ surface->getCanvas()->drawBitmap(GetAsSkBitmap(), 0, 0, &paint);
+ SkiaSalBitmap* thisPtr = const_cast<SkiaSalBitmap*>(this);
+ thisPtr->mAlphaImage = SkiaHelper::makeCheckedImageSnapshot(surface);
+ }
+ SAL_INFO("vcl.skia.trace", "getalphaskimage(" << this << ")");
+ return mAlphaImage;
+}
+
+void SkiaSalBitmap::EnsureBitmapData()
+{
+ if (mBuffer)
+ {
+ if (mSize == mPixelsSize)
+ return;
+ // Pending scaling. Create raster SkImage from the bitmap data
+ // at the pixel size and then the code below will scale at the correct
+ // bpp from the image.
+ SAL_INFO("vcl.skia.trace", "ensurebitmapdata(" << this << "): pixels to be scaled "
+ << mPixelsSize << "->" << mSize << ":"
+ << static_cast<int>(mScaleQuality));
+ Size savedSize = mSize;
+ mSize = mPixelsSize;
+ ResetToSkImage(SkImage::MakeFromBitmap(GetAsSkBitmap()));
+ mSize = savedSize;
+ }
+ // Try to fill mBuffer from mImage.
+ if (!mImage)
+ return;
+ SkiaZone zone;
+ if (!CreateBitmapData())
+ abort();
+ SkAlphaType alphaType = kUnpremul_SkAlphaType;
+#if SKIA_USE_BITMAP32
+ if (mBitCount == 32)
+ alphaType = kPremul_SkAlphaType;
+#endif
+ SkBitmap bitmap;
+ if (!bitmap.tryAllocPixels(SkImageInfo::MakeS32(mSize.Width(), mSize.Height(), alphaType)))
+ abort();
+ SkCanvas canvas(bitmap);
+ SkPaint paint;
+ paint.setBlendMode(SkBlendMode::kSrc); // set as is, including alpha
+ if (mSize != mPixelsSize) // pending scaling?
+ {
+ paint.setFilterQuality(mScaleQuality);
+ canvas.drawImageRect(mImage,
+ SkRect::MakeWH(mPixelsSize.getWidth(), mPixelsSize.getHeight()),
+ SkRect::MakeWH(mSize.getWidth(), mSize.getHeight()), &paint);
+ SAL_INFO("vcl.skia.trace", "ensurebitmapdata(" << this << "): image scaled " << mPixelsSize
+ << "->" << mSize << ":"
+ << static_cast<int>(mScaleQuality));
+ mPixelsSize = mSize;
+ mScaleQuality = kHigh_SkFilterQuality;
+ // Information about the pending scaling has been discarded, so make sure we do not
+ // keep around any cached images that would still need scaling.
+ ResetCachedDataBySize();
+ }
+ else
+ canvas.drawImage(mImage, 0, 0, &paint);
+ canvas.flush();
+ bitmap.setImmutable();
+ assert(mBuffer != nullptr);
+ if (mBitCount == 32)
+ {
+ for (long y = 0; y < mSize.Height(); ++y)
+ {
+ const uint8_t* src = static_cast<uint8_t*>(bitmap.getAddr(0, y));
+ sal_uInt8* dest = mBuffer.get() + mScanlineSize * y;
+ memcpy(dest, src, mScanlineSize);
+ }
+ }
+ else if (mBitCount == 24) // non-paletted
+ {
+ for (long y = 0; y < mSize.Height(); ++y)
+ {
+ const uint8_t* src = static_cast<uint8_t*>(bitmap.getAddr(0, y));
+ sal_uInt8* dest = mBuffer.get() + mScanlineSize * y;
+ for (long x = 0; x < mSize.Width(); ++x)
+ {
+ *dest++ = *src++;
+ *dest++ = *src++;
+ *dest++ = *src++;
+ ++src; // skip alpha
+ }
+ }
+ }
+ else if (mBitCount == 8 && mPalette.IsGreyPalette8Bit())
+ {
+ for (long y = 0; y < mSize.Height(); ++y)
+ {
+ const uint8_t* src = static_cast<uint8_t*>(bitmap.getAddr(0, y));
+ sal_uInt8* dest = mBuffer.get() + mScanlineSize * y;
+ // no actual data conversion, use one color channel as the gray value
+ for (long x = 0; x < mSize.Width(); ++x)
+ dest[x] = src[x * 4];
+ }
+ }
+ else
+ {
+ std::unique_ptr<vcl::ScanlineWriter> pWriter
+ = vcl::ScanlineWriter::Create(mBitCount, mPalette);
+ for (long y = 0; y < mSize.Height(); ++y)
+ {
+ const uint8_t* src = static_cast<uint8_t*>(bitmap.getAddr(0, y));
+ sal_uInt8* dest = mBuffer.get() + mScanlineSize * y;
+ pWriter->nextLine(dest);
+ for (long x = 0; x < mSize.Width(); ++x)
+ {
+ sal_uInt8 r = *src++;
+ sal_uInt8 g = *src++;
+ sal_uInt8 b = *src++;
+ ++src; // skip alpha
+ pWriter->writeRGB(r, g, b);
+ }
+ }
+ }
+ verify();
+ SAL_INFO("vcl.skia.trace", "ensurebitmapdata(" << this << ")");
+}
+
+void SkiaSalBitmap::EnsureBitmapUniqueData()
+{
+ EnsureBitmapData();
+ if (mBuffer.use_count() > 1)
+ {
+ sal_uInt32 allocate = mScanlineSize * mSize.Height();
+#ifdef DBG_UTIL
+ assert(memcmp(mBuffer.get() + allocate, CANARY, sizeof(CANARY)) == 0);
+ allocate += sizeof(CANARY);
+#endif
+ boost::shared_ptr<sal_uInt8[]> newBuffer = boost::make_shared_noinit<sal_uInt8[]>(allocate);
+ memcpy(newBuffer.get(), mBuffer.get(), allocate);
+ mBuffer = newBuffer;
+ }
+}
+
+void SkiaSalBitmap::ResetCachedData()
+{
+ SkiaZone zone;
+ // There may be a case when only mImage is set and CreatBitmapData() will create
+ // mBuffer from it if needed, in that case ResetToSkImage() should be used.
+ assert(mBuffer.get() || !mImage);
+ mImage.reset();
+ mAlphaImage.reset();
+}
+
+void SkiaSalBitmap::ResetToSkImage(sk_sp<SkImage> image)
+{
+ SkiaZone zone;
+ mBuffer.reset();
+ mImage = image;
+ mAlphaImage.reset();
+}
+
+void SkiaSalBitmap::ResetCachedDataBySize()
+{
+ SkiaZone zone;
+ assert(mSize == mPixelsSize);
+ if (mImage && (mImage->width() != mSize.getWidth() || mImage->height() != mSize.getHeight()))
+ mImage.reset();
+ if (mAlphaImage
+ && (mAlphaImage->width() != mSize.getWidth() || mAlphaImage->height() != mSize.getHeight()))
+ mAlphaImage.reset();
+}
+
+#ifdef DBG_UTIL
+void SkiaSalBitmap::dump(const char* file) const
+{
+ sk_sp<SkImage> saveImage = mImage;
+ sk_sp<SkImage> saveAlphaImage = mAlphaImage;
+ bool resetBuffer = !mBuffer;
+ int saveWriteAccessCount = mWriteAccessCount;
+ Size savePrescaleSize = mPixelsSize;
+ SkiaSalBitmap* thisPtr = const_cast<SkiaSalBitmap*>(this);
+ // avoid possible assert
+ thisPtr->mWriteAccessCount = 0;
+ SkiaHelper::dump(GetSkImage(), file);
+ // restore old state, so that debugging doesn't affect it
+ if (resetBuffer)
+ thisPtr->mBuffer.reset();
+ thisPtr->mImage = saveImage;
+ thisPtr->mAlphaImage = saveAlphaImage;
+ thisPtr->mWriteAccessCount = saveWriteAccessCount;
+ thisPtr->mPixelsSize = savePrescaleSize;
+}
+
+void SkiaSalBitmap::verify() const
+{
+ if (!mBuffer)
+ return;
+ // Use mPixelsSize, that describes the size of the actual data.
+ assert(memcmp(mBuffer.get() + mScanlineSize * mPixelsSize.Height(), CANARY, sizeof(CANARY))
+ == 0);
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/skia/skia_blacklist_vulkan.xml b/vcl/skia/skia_blacklist_vulkan.xml
new file mode 100644
index 000000000..8a222d005
--- /dev/null
+++ b/vcl/skia/skia_blacklist_vulkan.xml
@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+* This file is part of the LibreOffice project.
+*
+* This Source Code Form is subject to the terms of the Mozilla Public
+* License, v. 2.0. If a copy of the MPL was not distributed with this
+* file, You can obtain one at http://mozilla.org/MPL/2.0/.
+-->
+
+<!--
+ entry attributes:
+ os - "all", "7", "8", "8_1", "10", "windows", "linux", "osx_10_5", "osx_10_6", "osx_10_7", "osx_10_8", "osx"
+ vendor - "all", "intel", "amd", "nvidia", "microsoft"
+ compare - "less", "less_equal", "greater", "greater_equal", "equal", "not_equal", "between_exclusive", "between_inclusive", "between_inclusive_start"
+ version
+ minVersion
+ maxVersion
+-->
+
+<root>
+ <whitelist>
+ </whitelist>
+ <blacklist>
+ <entry os="all" vendor="intel" compare="less_equal" version="0.16.2">
+ <device id="all"/>
+ </entry>
+ <entry os="all" vendor="amd" compare="less_equal" version="2.0.49">
+ <device id="all"/>
+ </entry>
+ <entry os="windows" vendor="nvidia">
+ <device id="all"/>
+ </entry>
+ <entry os="7" vendor="all">
+ <device id="all"/>
+ </entry>
+ </blacklist>
+</root>
diff --git a/vcl/skia/win/gdiimpl.cxx b/vcl/skia/win/gdiimpl.cxx
new file mode 100644
index 000000000..a4cbe062f
--- /dev/null
+++ b/vcl/skia/win/gdiimpl.cxx
@@ -0,0 +1,393 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <skia/win/gdiimpl.hxx>
+
+#include <win/saldata.hxx>
+#include <vcl/skia/SkiaHelper.hxx>
+#include <skia/utils.hxx>
+#include <skia/zone.hxx>
+#include <win/winlayout.hxx>
+#include <comphelper/windowserrorstring.hxx>
+
+#include <SkCanvas.h>
+#include <SkPaint.h>
+#include <SkPixelRef.h>
+#include <SkTypeface_win.h>
+#include <SkFont.h>
+#include <SkFontMgr.h>
+#include <SkFontLCDConfig.h>
+#include <tools/sk_app/win/WindowContextFactory_win.h>
+#include <tools/sk_app/WindowContext.h>
+
+#include <windows.h>
+
+WinSkiaSalGraphicsImpl::WinSkiaSalGraphicsImpl(WinSalGraphics& rGraphics,
+ SalGeometryProvider* mpProvider)
+ : SkiaSalGraphicsImpl(rGraphics, mpProvider)
+ , mWinParent(rGraphics)
+{
+}
+
+void WinSkiaSalGraphicsImpl::createWindowContext(bool forceRaster)
+{
+ SkiaZone zone;
+ sk_app::DisplayParams displayParams;
+ switch (forceRaster ? SkiaHelper::RenderRaster : SkiaHelper::renderMethodToUse())
+ {
+ case SkiaHelper::RenderRaster:
+ mWindowContext = sk_app::window_context_factory::MakeRasterForWin(mWinParent.gethWnd(),
+ displayParams);
+ break;
+ case SkiaHelper::RenderVulkan:
+ mWindowContext = sk_app::window_context_factory::MakeVulkanForWin(mWinParent.gethWnd(),
+ displayParams);
+ break;
+ }
+}
+
+void WinSkiaSalGraphicsImpl::DeInit()
+{
+ SkiaZone zone;
+ SkiaSalGraphicsImpl::DeInit();
+ mWindowContext.reset();
+}
+
+void WinSkiaSalGraphicsImpl::freeResources() {}
+
+void WinSkiaSalGraphicsImpl::performFlush()
+{
+ SkiaZone zone;
+ flushDrawing();
+ if (mWindowContext)
+ mWindowContext->swapBuffers();
+}
+
+bool WinSkiaSalGraphicsImpl::TryRenderCachedNativeControl(ControlCacheKey const& rControlCacheKey,
+ int nX, int nY)
+{
+ static bool gbCacheEnabled = !getenv("SAL_WITHOUT_WIDGET_CACHE");
+ if (!gbCacheEnabled)
+ return false;
+
+ auto& controlsCache = SkiaControlsCache::get();
+ SkiaControlCacheType::const_iterator iterator = controlsCache.find(rControlCacheKey);
+ if (iterator == controlsCache.end())
+ return false;
+
+ preDraw();
+ SAL_INFO("vcl.skia.trace", "tryrendercachednativecontrol("
+ << this << "): "
+ << SkIRect::MakeXYWH(nX, nY, iterator->second->width(),
+ iterator->second->height()));
+ mSurface->getCanvas()->drawImage(iterator->second, nX, nY);
+ postDraw();
+ return true;
+}
+
+bool WinSkiaSalGraphicsImpl::RenderAndCacheNativeControl(CompatibleDC& rWhite, CompatibleDC& rBlack,
+ int nX, int nY,
+ ControlCacheKey& aControlCacheKey)
+{
+ assert(dynamic_cast<SkiaCompatibleDC*>(&rWhite));
+ assert(dynamic_cast<SkiaCompatibleDC*>(&rBlack));
+
+ sk_sp<SkImage> image = static_cast<SkiaCompatibleDC&>(rBlack).getAsImageDiff(
+ static_cast<SkiaCompatibleDC&>(rWhite));
+ preDraw();
+ SAL_INFO("vcl.skia.trace",
+ "renderandcachednativecontrol("
+ << this << "): " << SkIRect::MakeXYWH(nX, nY, image->width(), image->height()));
+ mSurface->getCanvas()->drawImage(image, nX, nY);
+ postDraw();
+
+ if (!aControlCacheKey.canCacheControl())
+ return true;
+ SkiaControlCachePair pair(aControlCacheKey, std::move(image));
+ SkiaControlsCache::get().insert(std::move(pair));
+ return true;
+}
+
+#ifdef SAL_LOG_INFO
+static HRESULT checkResult(HRESULT hr, const char* file, size_t line)
+{
+ if (FAILED(hr))
+ {
+ OUString sLocationString
+ = OUString::createFromAscii(file) + ":" + OUString::number(line) + " ";
+ SAL_DETAIL_LOG_STREAM(SAL_DETAIL_ENABLE_LOG_INFO, ::SAL_DETAIL_LOG_LEVEL_INFO, "vcl.skia",
+ sLocationString.toUtf8().getStr(),
+ "HRESULT failed with: 0x" << OUString::number(hr, 16) << ": "
+ << WindowsErrorStringFromHRESULT(hr));
+ }
+ return hr;
+}
+
+#define CHECKHR(funct) checkResult(funct, __FILE__, __LINE__)
+#else
+#define CHECKHR(funct) (funct)
+#endif
+
+sk_sp<SkTypeface> WinSkiaSalGraphicsImpl::createDirectWriteTypeface(const LOGFONTW& logFont)
+{
+ if (!dwriteDone)
+ {
+ if (SUCCEEDED(
+ CHECKHR(DWriteCreateFactory(DWRITE_FACTORY_TYPE_SHARED, __uuidof(IDWriteFactory),
+ reinterpret_cast<IUnknown**>(&dwriteFactory)))))
+ {
+ if (SUCCEEDED(CHECKHR(dwriteFactory->GetGdiInterop(&dwriteGdiInterop))))
+ dwriteFontMgr = SkFontMgr_New_DirectWrite(dwriteFactory);
+ else
+ dwriteFactory->Release();
+ }
+ dwriteDone = true;
+ }
+ IDWriteFont* font = nullptr;
+ IDWriteFontFace* fontFace;
+ IDWriteFontFamily* fontFamily;
+ if (FAILED(CHECKHR(dwriteGdiInterop->CreateFontFromLOGFONT(&logFont, &font))))
+ return nullptr;
+ if (FAILED(CHECKHR(font->CreateFontFace(&fontFace))))
+ return nullptr;
+ if (FAILED(CHECKHR(font->GetFontFamily(&fontFamily))))
+ return nullptr;
+ return sk_sp<SkTypeface>(
+ SkCreateTypefaceDirectWrite(dwriteFontMgr, fontFace, font, fontFamily));
+}
+
+bool WinSkiaSalGraphicsImpl::DrawTextLayout(const GenericSalLayout& rLayout)
+{
+ const WinFontInstance& rWinFont = static_cast<const WinFontInstance&>(rLayout.GetFont());
+ float fHScale = rWinFont.getHScale();
+
+ assert(dynamic_cast<const WinFontInstance*>(&rLayout.GetFont()));
+ const WinFontInstance* pWinFont = static_cast<const WinFontInstance*>(&rLayout.GetFont());
+ const HFONT hLayoutFont = pWinFont->GetHFONT();
+ LOGFONTW logFont;
+ if (GetObjectW(hLayoutFont, sizeof(logFont), &logFont) == 0)
+ {
+ assert(false);
+ return false;
+ }
+ sk_sp<SkTypeface> typeface = createDirectWriteTypeface(logFont);
+ GlyphOrientation glyphOrientation = GlyphOrientation::Apply;
+ if (!typeface) // fall back to GDI text rendering
+ {
+ typeface.reset(SkCreateTypefaceFromLOGFONT(logFont));
+ glyphOrientation = GlyphOrientation::Ignore;
+ }
+ // lfHeight actually depends on DPI, so it's not really font height as such,
+ // but for LOGFONT-based typefaces Skia simply sets lfHeight back to this value
+ // directly.
+ double fontHeight = logFont.lfHeight;
+ if (fontHeight < 0)
+ fontHeight = -fontHeight;
+ SkFont font(typeface, fontHeight, fHScale, 0);
+ font.setEdging(getFontEdging());
+ assert(dynamic_cast<SkiaSalGraphicsImpl*>(mWinParent.GetImpl()));
+ SkiaSalGraphicsImpl* impl = static_cast<SkiaSalGraphicsImpl*>(mWinParent.GetImpl());
+ COLORREF color = ::GetTextColor(mWinParent.getHDC());
+ Color salColor(GetRValue(color), GetGValue(color), GetBValue(color));
+ // The font already is set up to have glyphs rotated as needed.
+ impl->drawGenericLayout(rLayout, salColor, font, glyphOrientation);
+ return true;
+}
+
+SkFont::Edging WinSkiaSalGraphicsImpl::getFontEdging()
+{
+ if (fontEdgingDone)
+ return fontEdging;
+ // Skia needs to be explicitly told what kind of antialiasing should be used,
+ // get it from system settings. This does not actually matter for the text
+ // rendering itself, since Skia has been patched to simply use the setting
+ // from the LOGFONT, which gets set by VCL's ImplGetLogFontFromFontSelect()
+ // and that one normally uses DEFAULT_QUALITY, so Windows will select
+ // the appropriate AA setting. But Skia internally chooses the format to which
+ // the glyphs will be rendered based on this setting (subpixel AA requires colors,
+ // others do not).
+ fontEdging = SkFont::Edging::kAlias;
+ SkFontLCDConfig::LCDOrder lcdOrder = SkFontLCDConfig::kNONE_LCDOrder;
+ BOOL set;
+ if (SystemParametersInfo(SPI_GETFONTSMOOTHING, 0, &set, 0) && set)
+ {
+ UINT set2;
+ if (SystemParametersInfo(SPI_GETFONTSMOOTHINGTYPE, 0, &set2, 0)
+ && set2 == FE_FONTSMOOTHINGCLEARTYPE)
+ {
+ fontEdging = SkFont::Edging::kSubpixelAntiAlias;
+ if (SystemParametersInfo(SPI_GETFONTSMOOTHINGORIENTATION, 0, &set2, 0)
+ && set2 == FE_FONTSMOOTHINGORIENTATIONBGR)
+ lcdOrder = SkFontLCDConfig::kBGR_LCDOrder;
+ else
+ lcdOrder = SkFontLCDConfig::kRGB_LCDOrder; // default
+ }
+ else
+ fontEdging = SkFont::Edging::kAntiAlias;
+ }
+ SkFontLCDConfig::SetSubpixelOrder(lcdOrder);
+ // Cache this, it is actually visible a little bit when profiling.
+ fontEdgingDone = true;
+ return fontEdging;
+}
+
+void WinSkiaSalGraphicsImpl::ClearDevFontCache()
+{
+ dwriteFontMgr.reset();
+ dwriteDone = false;
+ fontEdgingDone = false;
+}
+
+SkiaCompatibleDC::SkiaCompatibleDC(SalGraphics& rGraphics, int x, int y, int width, int height)
+ : CompatibleDC(rGraphics, x, y, width, height, false)
+{
+}
+
+std::unique_ptr<CompatibleDC::Texture> SkiaCompatibleDC::getAsMaskTexture() const
+{
+ auto ret = std::make_unique<SkiaCompatibleDC::Texture>();
+ ret->image = getAsMaskImage();
+ return ret;
+}
+
+sk_sp<SkImage> SkiaCompatibleDC::getAsMaskImage() const
+{
+ SkiaZone zone;
+ // mpData is in the BGRA format, with A unused (and set to 0), and RGB are grey,
+ // so convert it to Skia format, then to 8bit and finally use as alpha mask
+ SkBitmap tmpBitmap;
+ if (!tmpBitmap.installPixels(SkImageInfo::Make(maRects.mnSrcWidth, maRects.mnSrcHeight,
+ kBGRA_8888_SkColorType, kOpaque_SkAlphaType),
+ mpData, maRects.mnSrcWidth * 4))
+ abort();
+ tmpBitmap.setImmutable();
+ SkBitmap bitmap8;
+ if (!bitmap8.tryAllocPixels(SkImageInfo::Make(maRects.mnSrcWidth, maRects.mnSrcHeight,
+ kGray_8_SkColorType, kOpaque_SkAlphaType)))
+ abort();
+ SkCanvas canvas8(bitmap8);
+ SkPaint paint8;
+ paint8.setBlendMode(SkBlendMode::kSrc); // copy and convert depth
+ // The data we got is upside-down.
+ SkMatrix matrix;
+ matrix.preTranslate(0, maRects.mnSrcHeight);
+ matrix.setConcat(matrix, SkMatrix::Scale(1, -1));
+ canvas8.concat(matrix);
+ canvas8.drawBitmap(tmpBitmap, 0, 0, &paint8);
+ bitmap8.setImmutable();
+ // use the 8bit data as an alpha channel
+ SkBitmap alpha;
+ alpha.setInfo(bitmap8.info().makeColorType(kAlpha_8_SkColorType), bitmap8.rowBytes());
+ alpha.setPixelRef(sk_ref_sp(bitmap8.pixelRef()), bitmap8.pixelRefOrigin().x(),
+ bitmap8.pixelRefOrigin().y());
+ alpha.setImmutable();
+ return SkiaHelper::createSkImage(alpha);
+}
+
+sk_sp<SkImage> SkiaCompatibleDC::getAsImage() const
+{
+ SkiaZone zone;
+ SkBitmap tmpBitmap;
+ if (!tmpBitmap.installPixels(SkImageInfo::Make(maRects.mnSrcWidth, maRects.mnSrcHeight,
+ kBGRA_8888_SkColorType, kUnpremul_SkAlphaType),
+ mpData, maRects.mnSrcWidth * 4))
+ abort();
+ tmpBitmap.setImmutable();
+ sk_sp<SkSurface> surface = SkiaHelper::createSkSurface(tmpBitmap.width(), tmpBitmap.height());
+ SkPaint paint;
+ paint.setBlendMode(SkBlendMode::kSrc); // set as is, including alpha
+ SkCanvas* canvas = surface->getCanvas();
+ canvas->save();
+ // The data we got is upside-down.
+ SkMatrix matrix;
+ matrix.preTranslate(0, maRects.mnSrcHeight);
+ matrix.setConcat(matrix, SkMatrix::Scale(1, -1));
+ canvas->concat(matrix);
+ canvas->drawBitmapRect(tmpBitmap,
+ SkRect::MakeXYWH(0, 0, maRects.mnSrcWidth, maRects.mnSrcHeight),
+ SkRect::MakeXYWH(0, 0, maRects.mnSrcWidth, maRects.mnSrcHeight), &paint);
+ canvas->restore();
+ return SkiaHelper::makeCheckedImageSnapshot(surface);
+}
+
+sk_sp<SkImage> SkiaCompatibleDC::getAsImageDiff(const SkiaCompatibleDC& white) const
+{
+ SkiaZone zone;
+ assert(maRects.mnSrcWidth == white.maRects.mnSrcWidth
+ || maRects.mnSrcHeight == white.maRects.mnSrcHeight);
+ SkBitmap tmpBitmap;
+ if (!tmpBitmap.tryAllocPixels(SkImageInfo::Make(maRects.mnSrcWidth, maRects.mnSrcHeight,
+ kBGRA_8888_SkColorType, kPremul_SkAlphaType),
+ maRects.mnSrcWidth * 4))
+ abort();
+ // Native widgets are drawn twice on black/white background to synthetize alpha
+ // (commit c6b66646870cb2bffaa73565affcf80bf74e0b5c). The problem is that
+ // most widgets when drawn on transparent background are drawn properly (and the result
+ // is in premultiplied alpha format), some such as "Edit" (used by ControlType::Editbox)
+ // keep the alpha channel as transparent. Therefore the alpha is actually computed
+ // from the difference in the premultiplied red channels when drawn one black and on white.
+ // Alpha is computed as "alpha = 1.0 - abs(black.red - white.red)".
+ // TODO I doubt this can be done using Skia, so do it manually here. Fortunately
+ // the bitmaps should be fairly small and are cached.
+ uint32_t* dest = tmpBitmap.getAddr32(0, 0);
+ assert(dest == tmpBitmap.getPixels());
+ const sal_uInt32* src = mpData;
+ const sal_uInt32* whiteSrc = white.mpData;
+ uint32_t* end = dest + tmpBitmap.width() * tmpBitmap.height();
+ while (dest < end)
+ {
+ uint32_t alpha = 255 - abs(int(*src & 0xff) - int(*whiteSrc & 0xff));
+ *dest = (*src & 0x00ffffff) | (alpha << 24);
+ ++dest;
+ ++src;
+ ++whiteSrc;
+ }
+ tmpBitmap.notifyPixelsChanged();
+ tmpBitmap.setImmutable();
+ sk_sp<SkSurface> surface = SkiaHelper::createSkSurface(tmpBitmap.width(), tmpBitmap.height());
+ SkPaint paint;
+ paint.setBlendMode(SkBlendMode::kSrc); // set as is, including alpha
+ SkCanvas* canvas = surface->getCanvas();
+ canvas->save();
+ // The data we got is upside-down.
+ SkMatrix matrix;
+ matrix.preTranslate(0, tmpBitmap.height());
+ matrix.setConcat(matrix, SkMatrix::Scale(1, -1));
+ canvas->concat(matrix);
+ canvas->drawBitmap(tmpBitmap, 0, 0, &paint);
+ canvas->restore();
+ return SkiaHelper::makeCheckedImageSnapshot(surface);
+}
+
+SkiaControlsCache::SkiaControlsCache()
+ : cache(200)
+{
+}
+
+SkiaControlCacheType& SkiaControlsCache::get()
+{
+ SalData* data = GetSalData();
+ if (!data->m_pSkiaControlsCache)
+ data->m_pSkiaControlsCache.reset(new SkiaControlsCache);
+ return data->m_pSkiaControlsCache->cache;
+}
+
+namespace
+{
+std::unique_ptr<sk_app::WindowContext> createVulkanWindowContext(bool /*temporary*/)
+{
+ SkiaZone zone;
+ sk_app::DisplayParams displayParams;
+ return sk_app::window_context_factory::MakeVulkanForWin(nullptr, displayParams);
+}
+}
+
+void WinSkiaSalGraphicsImpl::prepareSkia() { SkiaHelper::prepareSkia(createVulkanWindowContext); }
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/skia/x11/gdiimpl.cxx b/vcl/skia/x11/gdiimpl.cxx
new file mode 100644
index 000000000..1602218c1
--- /dev/null
+++ b/vcl/skia/x11/gdiimpl.cxx
@@ -0,0 +1,161 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * Some of this code is based on Skia source code, covered by the following
+ * license notice (see readlicense_oo for the full license):
+ *
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ */
+
+#include <skia/x11/gdiimpl.hxx>
+
+#include <tools/sk_app/unix/WindowContextFactory_unix.h>
+
+#include <skia/utils.hxx>
+#include <skia/zone.hxx>
+
+#include <X11/Xutil.h>
+
+X11SkiaSalGraphicsImpl::X11SkiaSalGraphicsImpl(X11SalGraphics& rParent)
+ : SkiaSalGraphicsImpl(rParent, rParent.GetGeometryProvider())
+ , mX11Parent(rParent)
+{
+}
+
+X11SkiaSalGraphicsImpl::~X11SkiaSalGraphicsImpl() {}
+
+void X11SkiaSalGraphicsImpl::Init()
+{
+ // The m_pFrame and m_pVDev pointers are updated late in X11
+ setProvider(mX11Parent.GetGeometryProvider());
+ SkiaSalGraphicsImpl::Init();
+}
+
+void X11SkiaSalGraphicsImpl::createWindowContext(bool forceRaster)
+{
+ assert(mX11Parent.GetDrawable() != None);
+ mWindowContext = createWindowContext(
+ mX11Parent.GetXDisplay(), mX11Parent.GetDrawable(), &mX11Parent.GetVisual(), GetWidth(),
+ GetHeight(), forceRaster ? SkiaHelper::RenderRaster : SkiaHelper::renderMethodToUse(),
+ false);
+}
+
+std::unique_ptr<sk_app::WindowContext>
+X11SkiaSalGraphicsImpl::createWindowContext(Display* display, Drawable drawable,
+ const XVisualInfo* visual, int width, int height,
+ SkiaHelper::RenderMethod renderMethod, bool temporary)
+{
+ SkiaZone zone;
+ sk_app::DisplayParams displayParams;
+ displayParams.fColorType = kN32_SkColorType;
+ sk_app::window_context_factory::XlibWindowInfo winInfo;
+ assert(display);
+ winInfo.fDisplay = display;
+ winInfo.fWindow = drawable;
+ winInfo.fFBConfig = nullptr; // not used
+ winInfo.fVisualInfo = const_cast<XVisualInfo*>(visual);
+ assert(winInfo.fVisualInfo->visual != nullptr); // make sure it's not an uninitialized SalVisual
+ winInfo.fWidth = width;
+ winInfo.fHeight = height;
+#ifdef DBG_UTIL
+ // Our patched Skia has VulkanWindowContext that shares GrContext, which requires
+ // that the X11 visual is always the same. Ensure it is so.
+ static VisualID checkVisualID = -1U;
+ // Exception is for the temporary case during startup, when SkiaHelper's
+ // checkDeviceBlacklisted() needs a WindowContext and may be called before SalVisual
+ // is ready.
+ if (!temporary)
+ {
+ assert(checkVisualID == -1U || winInfo.fVisualInfo->visualid == checkVisualID);
+ checkVisualID = winInfo.fVisualInfo->visualid;
+ }
+#else
+ (void)temporary;
+#endif
+ switch (renderMethod)
+ {
+ case SkiaHelper::RenderRaster:
+ // TODO The Skia Xlib code actually requires the non-native color type to work properly.
+ displayParams.fColorType
+ = (displayParams.fColorType == kBGRA_8888_SkColorType ? kRGBA_8888_SkColorType
+ : kBGRA_8888_SkColorType);
+ return sk_app::window_context_factory::MakeRasterForXlib(winInfo, displayParams);
+ case SkiaHelper::RenderVulkan:
+ return sk_app::window_context_factory::MakeVulkanForXlib(winInfo, displayParams);
+ }
+ abort();
+}
+
+bool X11SkiaSalGraphicsImpl::avoidRecreateByResize() const
+{
+ if (!mSurface || isOffscreen())
+ return false;
+ // Skia's WindowContext uses actual dimensions of the X window, which due to X11 being
+ // asynchronous may be temporarily different from what VCL thinks are the dimensions.
+ // That can lead to us repeatedly calling recreateSurface() because of "incorrect"
+ // size, and we otherwise need to check for size changes, because VCL does not inform us.
+ // Avoid the problem here by checking the size of the X window and bail out if Skia
+ // would just return the same size as it is now.
+ Window r;
+ int x, y;
+ unsigned int w, h, border, depth;
+ XGetGeometry(mX11Parent.GetXDisplay(), mX11Parent.GetDrawable(), &r, &x, &y, &w, &h, &border,
+ &depth);
+ return mSurface->width() == int(w) && mSurface->height() == int(h);
+}
+
+void X11SkiaSalGraphicsImpl::DeInit()
+{
+ SkiaZone zone;
+ SkiaSalGraphicsImpl::DeInit();
+ mWindowContext.reset();
+}
+
+void X11SkiaSalGraphicsImpl::freeResources() {}
+
+void X11SkiaSalGraphicsImpl::performFlush()
+{
+ SkiaZone zone;
+ flushDrawing();
+ // TODO XPutImage() is somewhat inefficient, XShmPutImage() should be preferred.
+ mWindowContext->swapBuffers();
+}
+
+std::unique_ptr<sk_app::WindowContext> createVulkanWindowContext(bool temporary)
+{
+ SalDisplay* salDisplay = vcl_sal::getSalDisplay(GetGenericUnixSalData());
+ const XVisualInfo* visual;
+ XVisualInfo* visuals = nullptr;
+ if (!temporary)
+ visual = &salDisplay->GetVisual(salDisplay->GetDefaultXScreen());
+ else
+ {
+ // SalVisual from salDisplay may not be setup yet at this point, get
+ // info for the default visual.
+ XVisualInfo search;
+ search.visualid = XVisualIDFromVisual(
+ DefaultVisual(salDisplay->GetDisplay(), salDisplay->GetDefaultXScreen().getXScreen()));
+ int count;
+ visuals = XGetVisualInfo(salDisplay->GetDisplay(), VisualIDMask, &search, &count);
+ assert(count == 1);
+ visual = visuals;
+ }
+ std::unique_ptr<sk_app::WindowContext> ret = X11SkiaSalGraphicsImpl::createWindowContext(
+ salDisplay->GetDisplay(), None, visual, 1, 1, SkiaHelper::RenderVulkan, temporary);
+ if (temporary)
+ XFree(visuals);
+ return ret;
+}
+
+void X11SkiaSalGraphicsImpl::prepareSkia() { SkiaHelper::prepareSkia(createVulkanWindowContext); }
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/skia/x11/salvd.cxx b/vcl/skia/x11/salvd.cxx
new file mode 100644
index 000000000..a4db9c75d
--- /dev/null
+++ b/vcl/skia/x11/salvd.cxx
@@ -0,0 +1,86 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <vcl/sysdata.hxx>
+
+#include <unx/salunx.h>
+#include <unx/saldisp.hxx>
+#include <unx/salgdi.h>
+#include <unx/salvd.h>
+
+#include <skia/x11/salvd.hxx>
+
+void X11SalGraphics::Init(X11SkiaSalVirtualDevice* pDevice)
+{
+ SalDisplay* pDisplay = pDevice->GetDisplay();
+
+ m_nXScreen = pDevice->GetXScreenNumber();
+ m_pColormap = &pDisplay->GetColormap(m_nXScreen);
+
+ m_pVDev = pDevice;
+ m_pFrame = nullptr;
+
+ bWindow_ = pDisplay->IsDisplay();
+ bVirDev_ = true;
+
+ mxImpl->Init();
+}
+
+X11SkiaSalVirtualDevice::X11SkiaSalVirtualDevice(SalGraphics const* pGraphics, long nDX, long nDY,
+ const SystemGraphicsData* pData,
+ std::unique_ptr<X11SalGraphics> pNewGraphics)
+ : mpGraphics(std::move(pNewGraphics))
+ , mbGraphics(false)
+ , mnXScreen(0)
+{
+ assert(mpGraphics);
+
+ // TODO Check where a VirtualDevice is created from SystemGraphicsData
+ assert(pData == nullptr);
+ (void)pData;
+
+ mpDisplay = vcl_sal::getSalDisplay(GetGenericUnixSalData());
+ mnXScreen = pGraphics ? static_cast<X11SalGraphics const*>(pGraphics)->GetScreenNumber()
+ : vcl_sal::getSalDisplay(GetGenericUnixSalData())->GetDefaultXScreen();
+ mnWidth = nDX;
+ mnHeight = nDY;
+ mpGraphics->Init(this);
+}
+
+X11SkiaSalVirtualDevice::~X11SkiaSalVirtualDevice() {}
+
+SalGraphics* X11SkiaSalVirtualDevice::AcquireGraphics()
+{
+ if (mbGraphics)
+ return nullptr;
+
+ if (mpGraphics)
+ mbGraphics = true;
+
+ return mpGraphics.get();
+}
+
+void X11SkiaSalVirtualDevice::ReleaseGraphics(SalGraphics*) { mbGraphics = false; }
+
+bool X11SkiaSalVirtualDevice::SetSize(long nDX, long nDY)
+{
+ if (!nDX)
+ nDX = 1;
+ if (!nDY)
+ nDY = 1;
+
+ mnWidth = nDX;
+ mnHeight = nDY;
+ if (mpGraphics)
+ mpGraphics->Init(this);
+
+ return true;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/skia/x11/textrender.cxx b/vcl/skia/x11/textrender.cxx
new file mode 100644
index 000000000..13eff3012
--- /dev/null
+++ b/vcl/skia/x11/textrender.cxx
@@ -0,0 +1,80 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <skia/x11/textrender.hxx>
+
+#include <unx/fc_fontoptions.hxx>
+#include <unx/freetype_glyphcache.hxx>
+#include <vcl/svapp.hxx>
+#include <sallayout.hxx>
+#include <skia/gdiimpl.hxx>
+
+#include <SkFont.h>
+#include <SkFontMgr_fontconfig.h>
+
+void SkiaTextRender::DrawTextLayout(const GenericSalLayout& rLayout, const SalGraphics& rGraphics)
+{
+ const FreetypeFontInstance& rInstance = static_cast<FreetypeFontInstance&>(rLayout.GetFont());
+ const FreetypeFont& rFont = rInstance.GetFreetypeFont();
+ const FontSelectPattern& rFSD = rInstance.GetFontSelectPattern();
+ int nHeight = rFSD.mnHeight;
+ int nWidth = rFSD.mnWidth ? rFSD.mnWidth : nHeight;
+ if (nWidth == 0 || nHeight == 0)
+ return;
+
+ if (FreetypeFont::AlmostHorizontalDrainsRenderingPool(nWidth * 10 / nHeight, rFSD))
+ return;
+
+ if (!fontManager)
+ {
+ // Get the global FcConfig that our VCL fontconfig code uses, and refcount it.
+ fontManager = SkFontMgr_New_FontConfig(FcConfigReference(nullptr));
+ }
+ sk_sp<SkTypeface> typeface
+ = SkFontMgr_createTypefaceFromFcPattern(fontManager, rFont.GetFontOptions()->GetPattern());
+ SkFont font(typeface, nHeight);
+ // TODO are these correct?
+ if (rFont.NeedsArtificialItalic())
+ font.setSkewX(-0x6000L / 0x10000L);
+ if (rFont.NeedsArtificialBold())
+ font.setEmbolden(true);
+ font.setEdging(rFont.GetAntialiasAdvice() ? SkFont::Edging::kAntiAlias
+ : SkFont::Edging::kAlias);
+
+ assert(dynamic_cast<SkiaSalGraphicsImpl*>(rGraphics.GetImpl()));
+ SkiaSalGraphicsImpl* impl = static_cast<SkiaSalGraphicsImpl*>(rGraphics.GetImpl());
+ impl->drawGenericLayout(rLayout, mnTextColor, font,
+ SkiaSalGraphicsImpl::GlyphOrientation::Apply);
+}
+
+void SkiaTextRender::ClearDevFontCache() { fontManager.reset(); }
+
+#if 0
+// SKIA TODO
+void FontConfigFontOptions::cairo_font_options_substitute(FcPattern* pPattern)
+{
+ ImplSVData* pSVData = ImplGetSVData();
+ const cairo_font_options_t* pFontOptions = pSVData->mpDefInst->GetCairoFontOptions();
+ if( !pFontOptions )
+ return;
+ cairo_ft_font_options_substitute(pFontOptions, pPattern);
+}
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/skia/zone.cxx b/vcl/skia/zone.cxx
new file mode 100644
index 000000000..50f5e1ea7
--- /dev/null
+++ b/vcl/skia/zone.cxx
@@ -0,0 +1,76 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <skia/zone.hxx>
+
+#include <officecfg/Office/Common.hxx>
+#include <com/sun/star/util/XFlushable.hpp>
+#include <com/sun/star/configuration/theDefaultProvider.hpp>
+
+#include <sal/log.hxx>
+#include <o3tl/unreachable.hxx>
+
+#include <vcl/skia/SkiaHelper.hxx>
+
+/**
+ * Called from a signal handler or watchdog thread if we get
+ * a crash or hang in some driver.
+ */
+void SkiaZone::hardDisable()
+{
+ // protect ourselves from double calling etc.
+ static bool bDisabled = false;
+ if (!bDisabled)
+ {
+ bDisabled = true;
+
+ // Instead of disabling Skia as a whole, only force the CPU-based
+ // raster mode, which should be safe as it does not use drivers.
+ std::shared_ptr<comphelper::ConfigurationChanges> xChanges(
+ comphelper::ConfigurationChanges::create());
+ officecfg::Office::Common::VCL::ForceSkiaRaster::set(true, xChanges);
+ xChanges->commit();
+
+ // Force synchronous config write
+ css::uno::Reference<css::util::XFlushable>(
+ css::configuration::theDefaultProvider::get(comphelper::getProcessComponentContext()),
+ css::uno::UNO_QUERY_THROW)
+ ->flush();
+ }
+}
+
+void SkiaZone::checkDebug(int nUnchanged, const CrashWatchdogTimingsValues& aTimingValues)
+{
+ SAL_INFO("vcl.watchdog", "Skia watchdog - unchanged "
+ << nUnchanged << " enter count " << enterCount()
+ << " breakpoints mid: " << aTimingValues.mnDisableEntries
+ << " max " << aTimingValues.mnAbortAfter);
+}
+
+const CrashWatchdogTimingsValues& SkiaZone::getCrashWatchdogTimingsValues()
+{
+ switch (SkiaHelper::renderMethodToUse())
+ {
+ case SkiaHelper::RenderVulkan:
+ {
+ static const CrashWatchdogTimingsValues vulkanValues = { 6, 20 }; /* 1.5s, 5s */
+ return vulkanValues;
+ }
+ case SkiaHelper::RenderRaster:
+ {
+ // CPU-based operations with large images may take a noticeably long time,
+ // so use large values. CPU-based rendering shouldn't use any unstable drivers anyway.
+ static const CrashWatchdogTimingsValues rasterValues = { 600, 2000 }; /* 150s, 500s */
+ return rasterValues;
+ }
+ }
+ O3TL_UNREACHABLE;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-27 02:06:59 +0000