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/* -*- 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>
using namespace SkiaHelper;
X11SkiaSalGraphicsImpl::X11SkiaSalGraphicsImpl(X11SalGraphics& rParent)
: SkiaSalGraphicsImpl(rParent, rParent.GetGeometryProvider())
, mX11Parent(rParent)
{
}
void X11SkiaSalGraphicsImpl::Init()
{
// The m_pFrame and m_pVDev pointers are updated late in X11
setProvider(mX11Parent.GetGeometryProvider());
SkiaSalGraphicsImpl::Init();
}
void X11SkiaSalGraphicsImpl::createWindowSurfaceInternal(bool forceRaster)
{
assert(!mWindowContext);
assert(!mSurface);
assert(mX11Parent.GetDrawable() != None);
RenderMethod renderMethod = forceRaster ? RenderRaster : renderMethodToUse();
mScaling = getWindowScaling();
mWindowContext = createWindowContext(mX11Parent.GetXDisplay(), mX11Parent.GetDrawable(),
&mX11Parent.GetVisual(), GetWidth() * mScaling,
GetHeight() * mScaling, renderMethod, false);
if (mWindowContext)
{
// See flushSurfaceToWindowContext().
if (renderMethod == RenderRaster)
mSurface = mWindowContext->getBackbufferSurface();
else
mSurface = createSkSurface(GetWidth(), GetHeight());
}
}
std::unique_ptr<sk_app::WindowContext>
X11SkiaSalGraphicsImpl::createWindowContext(Display* display, Drawable drawable,
const XVisualInfo* visual, int width, int height,
RenderMethod renderMethod, bool temporary)
{
SkiaZone zone;
sk_app::DisplayParams displayParams;
displayParams.fColorType = kN32_SkColorType;
#if defined LINUX
// WORKAROUND: VSync causes freezes that can even temporarily freeze the entire desktop.
// This happens even with the latest 450.66 drivers despite them claiming a fix for vsync.
// https://forums.developer.nvidia.com/t/hangs-freezes-when-vulkan-v-sync-vk-present-mode-fifo-khr-is-enabled/67751
if (getVendor() == DriverBlocklist::VendorNVIDIA)
displayParams.fDisableVsync = true;
#endif
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;
#if defined DBG_UTIL && !defined NDEBUG
// Our patched Skia has VulkanWindowContext that shares grDirectContext, 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
// checkDeviceDenylisted() 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 RenderRaster:
// Make sure we ask for color type that matches the X11 visual. If red mask
// is larger value than blue mask, then on little endian this means blue is first.
// This should also preferably match SK_R32_SHIFT set in config_skia.h, as that
// improves performance, the common setup seems to be BGRA (possibly because of
// choosing OpenGL-capable visual).
displayParams.fColorType
= (visual->red_mask > visual->blue_mask ? kBGRA_8888_SkColorType
: kRGBA_8888_SkColorType);
return sk_app::window_context_factory::MakeRasterForXlib(winInfo, displayParams);
case RenderVulkan:
return sk_app::window_context_factory::MakeVulkanForXlib(winInfo, displayParams);
case RenderMetal:
abort();
break;
}
abort();
}
bool X11SkiaSalGraphicsImpl::avoidRecreateByResize() const
{
if (SkiaSalGraphicsImpl::avoidRecreateByResize())
return true;
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::freeResources() {}
void X11SkiaSalGraphicsImpl::Flush() { performFlush(); }
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, RenderVulkan, temporary);
if (temporary)
XFree(visuals);
return ret;
}
void X11SkiaSalGraphicsImpl::prepareSkia() { SkiaHelper::prepareSkia(createVulkanWindowContext); }
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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