8 files changed, 867 insertions, 0 deletions
diff --git a/vcl/inc/skia/gdiimpl.hxx b/vcl/inc/skia/gdiimpl.hxx
new file mode 100644
index 000000000..ca227e4e8
--- /dev/null
+++ b/vcl/inc/skia/gdiimpl.hxx
@@ -0,0 +1,332 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_VCL_SKIA_GDIIMPL_HXX
+#define INCLUDED_VCL_SKIA_GDIIMPL_HXX
+
+#include <vcl/dllapi.h>
+
+#include <salgdiimpl.hxx>
+#include <salgeom.hxx>
+
+#include <SkSurface.h>
+#include <SkRegion.h>
+
+#include <prewin.h>
+#include <tools/sk_app/WindowContext.h>
+#include <postwin.h>
+
+class SkiaFlushIdle;
+class GenericSalLayout;
+class SkFont;
+class SkiaSalBitmap;
+
+class VCL_DLLPUBLIC SkiaSalGraphicsImpl : public SalGraphicsImpl
+{
+public:
+    SkiaSalGraphicsImpl(SalGraphics& pParent, SalGeometryProvider* pProvider);
+    virtual ~SkiaSalGraphicsImpl() override;
+
+    virtual void Init() override;
+
+    virtual void DeInit() override;
+
+    virtual OUString getRenderBackendName() const override { return "skia"; }
+
+    const vcl::Region& getClipRegion() const;
+    virtual bool setClipRegion(const vcl::Region&) override;
+
+    //
+    // get the depth of the device
+    virtual sal_uInt16 GetBitCount() const override;
+
+    // get the width of the device
+    virtual long GetGraphicsWidth() const override;
+
+    // set the clip region to empty
+    virtual void ResetClipRegion() override;
+
+    // set the line color to transparent (= don't draw lines)
+
+    virtual void SetLineColor() override;
+
+    // set the line color to a specific color
+    virtual void SetLineColor(Color nColor) override;
+
+    // set the fill color to transparent (= don't fill)
+    virtual void SetFillColor() override;
+
+    // set the fill color to a specific color, shapes will be
+    // filled accordingly
+    virtual void SetFillColor(Color nColor) override;
+
+    // enable/disable XOR drawing
+    virtual void SetXORMode(bool bSet, bool bInvertOnly) override;
+
+    // set line color for raster operations
+    virtual void SetROPLineColor(SalROPColor nROPColor) override;
+
+    // set fill color for raster operations
+    virtual void SetROPFillColor(SalROPColor nROPColor) override;
+
+    // draw --> LineColor and FillColor and RasterOp and ClipRegion
+    virtual void drawPixel(long nX, long nY) override;
+    virtual void drawPixel(long nX, long nY, Color nColor) override;
+
+    virtual void drawLine(long nX1, long nY1, long nX2, long nY2) override;
+
+    virtual void drawRect(long nX, long nY, long nWidth, long nHeight) override;
+
+    virtual void drawPolyLine(sal_uInt32 nPoints, const SalPoint* pPtAry) override;
+
+    virtual void drawPolygon(sal_uInt32 nPoints, const SalPoint* pPtAry) override;
+
+    virtual void drawPolyPolygon(sal_uInt32 nPoly, const sal_uInt32* pPoints,
+                                 PCONSTSALPOINT* pPtAry) override;
+
+    virtual bool drawPolyPolygon(const basegfx::B2DHomMatrix& rObjectToDevice,
+                                 const basegfx::B2DPolyPolygon&, double fTransparency) override;
+
+    virtual bool drawPolyLine(const basegfx::B2DHomMatrix& rObjectToDevice,
+                              const basegfx::B2DPolygon&, double fTransparency, double fLineWidth,
+                              const std::vector<double>* pStroke, basegfx::B2DLineJoin,
+                              css::drawing::LineCap, double fMiterMinimumAngle,
+                              bool bPixelSnapHairline) override;
+
+    virtual bool drawPolyLineBezier(sal_uInt32 nPoints, const SalPoint* pPtAry,
+                                    const PolyFlags* pFlgAry) override;
+
+    virtual bool drawPolygonBezier(sal_uInt32 nPoints, const SalPoint* pPtAry,
+                                   const PolyFlags* pFlgAry) override;
+
+    virtual bool drawPolyPolygonBezier(sal_uInt32 nPoly, const sal_uInt32* pPoints,
+                                       const SalPoint* const* pPtAry,
+                                       const PolyFlags* const* pFlgAry) override;
+
+    // CopyArea --> No RasterOp, but ClipRegion
+    virtual void copyArea(long nDestX, long nDestY, long nSrcX, long nSrcY, long nSrcWidth,
+                          long nSrcHeight, bool bWindowInvalidate) override;
+
+    virtual void copyBits(const SalTwoRect& rPosAry, SalGraphics* pSrcGraphics) override;
+
+    virtual bool blendBitmap(const SalTwoRect&, const SalBitmap& rBitmap) override;
+
+    virtual bool blendAlphaBitmap(const SalTwoRect&, const SalBitmap& rSrcBitmap,
+                                  const SalBitmap& rMaskBitmap,
+                                  const SalBitmap& rAlphaBitmap) override;
+
+    virtual void drawBitmap(const SalTwoRect& rPosAry, const SalBitmap& rSalBitmap) override;
+
+    virtual void drawBitmap(const SalTwoRect& rPosAry, const SalBitmap& rSalBitmap,
+                            const SalBitmap& rMaskBitmap) override;
+
+    virtual void drawMask(const SalTwoRect& rPosAry, const SalBitmap& rSalBitmap,
+                          Color nMaskColor) override;
+
+    virtual std::shared_ptr<SalBitmap> getBitmap(long nX, long nY, long nWidth,
+                                                 long nHeight) override;
+
+    virtual Color getPixel(long nX, long nY) override;
+
+    // invert --> ClipRegion (only Windows or VirDevs)
+    virtual void invert(long nX, long nY, long nWidth, long nHeight, SalInvert nFlags) override;
+
+    virtual void invert(sal_uInt32 nPoints, const SalPoint* pPtAry, SalInvert nFlags) override;
+
+    virtual bool drawEPS(long nX, long nY, long nWidth, long nHeight, void* pPtr,
+                         sal_uInt32 nSize) override;
+
+    /** Render bitmap with alpha channel
+
+        @param rSourceBitmap
+        Source bitmap to blit
+
+        @param rAlphaBitmap
+        Alpha channel to use for blitting
+
+        @return true, if the operation succeeded, and false
+        otherwise. In this case, clients should try to emulate alpha
+        compositing themselves
+     */
+    virtual bool drawAlphaBitmap(const SalTwoRect&, const SalBitmap& rSourceBitmap,
+                                 const SalBitmap& rAlphaBitmap) override;
+
+    /** draw transformed bitmap (maybe with alpha) where Null, X, Y define the coordinate system */
+    virtual bool drawTransformedBitmap(const basegfx::B2DPoint& rNull, const basegfx::B2DPoint& rX,
+                                       const basegfx::B2DPoint& rY, const SalBitmap& rSourceBitmap,
+                                       const SalBitmap* pAlphaBitmap) override;
+
+    /** Render solid rectangle with given transparency
+
+      @param nX             Top left coordinate of rectangle
+
+      @param nY             Bottom right coordinate of rectangle
+
+      @param nWidth         Width of rectangle
+
+      @param nHeight        Height of rectangle
+
+      @param nTransparency  Transparency value (0-255) to use. 0 blits and opaque, 255 a
+                            fully transparent rectangle
+
+      @returns true if successfully drawn, false if not able to draw rectangle
+     */
+    virtual bool drawAlphaRect(long nX, long nY, long nWidth, long nHeight,
+                               sal_uInt8 nTransparency) override;
+
+    virtual bool drawGradient(const tools::PolyPolygon& rPolygon,
+                              const Gradient& rGradient) override;
+
+    virtual bool supportsOperation(OutDevSupportType eType) const override;
+
+#ifdef DBG_UTIL
+    void dump(const char* file) const;
+#endif
+
+    // Default blend mode for SkPaint is SkBlendMode::kSrcOver
+    void drawImage(const SalTwoRect& rPosAry, const sk_sp<SkImage>& aImage,
+                   SkBlendMode eBlendMode = SkBlendMode::kSrcOver);
+
+    void drawShader(const SalTwoRect& rPosAry, const sk_sp<SkShader>& shader);
+
+    enum class GlyphOrientation
+    {
+        Apply,
+        Ignore
+    };
+    void drawGenericLayout(const GenericSalLayout& layout, Color textColor, const SkFont& font,
+                           GlyphOrientation glyphOrientation);
+
+protected:
+    // To be called before any drawing.
+    void preDraw();
+    // To be called after any drawing.
+    void postDraw();
+    // The canvas to draw to. Will be diverted to a temporary for Xor mode.
+    SkCanvas* getDrawCanvas() { return mXorMode ? getXorCanvas() : mSurface->getCanvas(); }
+    // Call before makeImageSnapshot(), ensures the content is up to date.
+    void flushDrawing();
+
+    virtual void createSurface();
+    // Call to ensure that mSurface is valid. If mSurface is going to be modified,
+    // use preDraw() instead of this.
+    void checkSurface();
+    void destroySurface();
+    // Reimplemented for X11.
+    virtual bool avoidRecreateByResize() const { return false; }
+    void createWindowSurface(bool forceRaster = false);
+    virtual void createWindowContext(bool forceRaster = false) = 0;
+    void createOffscreenSurface();
+
+    void privateDrawAlphaRect(long nX, long nY, long nWidth, long nHeight, double nTransparency,
+                              bool blockAA = false);
+
+    void setProvider(SalGeometryProvider* provider) { mProvider = provider; }
+
+    bool isOffscreen() const { return mProvider == nullptr || mProvider->IsOffScreen(); }
+    bool isGPU() const { return mIsGPU; }
+
+    void invert(basegfx::B2DPolygon const& rPoly, SalInvert eFlags);
+
+    // Called by SkiaFlushIdle.
+    virtual void performFlush() = 0;
+    void scheduleFlush();
+    friend class SkiaFlushIdle;
+
+    // get the width of the device
+    int GetWidth() const { return mProvider ? mProvider->GetWidth() : 1; }
+    // get the height of the device
+    int GetHeight() const { return mProvider ? mProvider->GetHeight() : 1; }
+
+    SkCanvas* getXorCanvas();
+    void applyXor();
+    // NOTE: This must be called before the operation does any drawing.
+    void addXorRegion(const SkRect& rect)
+    {
+        if (mXorMode)
+        {
+            // Make slightly larger, just in case (rounding, antialiasing,...).
+            SkIRect addedRect = rect.makeOutset(2, 2).round();
+            // Two xor operations should cancel each other out. We batch xor operations,
+            // but if they can overlap, apply xor now, since applyXor() does the operation
+            // just once.
+            if (mXorRegion.intersects(addedRect))
+                applyXor();
+            mXorRegion.op(addedRect, SkRegion::kUnion_Op);
+        }
+    }
+    static void setCanvasClipRegion(SkCanvas* canvas, const vcl::Region& region);
+    sk_sp<SkImage> mergeCacheBitmaps(const SkiaSalBitmap& bitmap, const SkiaSalBitmap* alphaBitmap,
+                                     const Size targetSize);
+
+    // Skia uses floating point coordinates, so when we use integer coordinates, sometimes
+    // rounding results in off-by-one errors (down), especially when drawing using GPU,
+    // see https://bugs.chromium.org/p/skia/issues/detail?id=9611 . Compensate for
+    // it by using centers of pixels. Using 0.5 may sometimes round up, so go with 0.495 .
+    static constexpr SkScalar toSkX(long x) { return x + 0.495; }
+    static constexpr SkScalar toSkY(long y) { return y + 0.495; }
+    // Value to add to be exactly in the middle of the pixel.
+    static constexpr SkScalar toSkXYFix = SkScalar(0.005);
+
+    // Perform any pending drawing such as delayed merging of polygons. Called by preDraw()
+    // and anything that means the next operation cannot be another one in a series (e.g.
+    // changing colors).
+    void checkPendingDrawing();
+    bool delayDrawPolyPolygon(const basegfx::B2DPolyPolygon& polygon, double transparency);
+    void performDrawPolyPolygon(const basegfx::B2DPolyPolygon& polygon, double transparency,
+                                bool useAA);
+
+    template <typename charT, typename traits>
+    friend inline std::basic_ostream<charT, traits>&
+    operator<<(std::basic_ostream<charT, traits>& stream, const SkiaSalGraphicsImpl* graphics)
+    { // O - offscreen, G - GPU-based, R - raster
+        return stream << static_cast<const void*>(graphics) << " "
+                      << Size(graphics->GetWidth(), graphics->GetHeight())
+                      << (graphics->isGPU() ? "G" : "R") << (graphics->isOffscreen() ? "O" : "");
+    }
+
+    SalGraphics& mParent;
+    /// Pointer to the SalFrame or SalVirtualDevice
+    SalGeometryProvider* mProvider;
+    std::unique_ptr<sk_app::WindowContext> mWindowContext;
+    // The Skia surface that is target of all the rendering.
+    sk_sp<SkSurface> mSurface;
+    bool mIsGPU; // whether the surface is GPU-backed
+    // Keep reference to shared GrContext.
+    vcl::Region mClipRegion;
+    Color mLineColor;
+    Color mFillColor;
+    bool mXorMode;
+    SkBitmap mXorBitmap;
+    std::unique_ptr<SkCanvas> mXorCanvas;
+    SkRegion mXorRegion; // the area that needs updating for the xor operation
+    std::unique_ptr<SkiaFlushIdle> mFlush;
+    // Info about pending polygons to draw (we try to merge adjacent polygons into one).
+    struct LastPolyPolygonInfo
+    {
+        basegfx::B2DPolyPolygonVector polygons;
+        basegfx::B2DRange bounds;
+        double transparency;
+    };
+    LastPolyPolygonInfo mLastPolyPolygonInfo;
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/skia/salbmp.hxx b/vcl/inc/skia/salbmp.hxx
new file mode 100644
index 000000000..5079be088
--- /dev/null
+++ b/vcl/inc/skia/salbmp.hxx
@@ -0,0 +1,134 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_VCL_INC_SKIA_SALBMP_H
+#define INCLUDED_VCL_INC_SKIA_SALBMP_H
+
+#include <salbmp.hxx>
+
+#include <SkImage.h>
+
+#include <boost/shared_ptr.hpp>
+
+class VCL_PLUGIN_PUBLIC SkiaSalBitmap final : public SalBitmap
+{
+public:
+    SkiaSalBitmap();
+    SkiaSalBitmap(const sk_sp<SkImage>& image);
+    virtual ~SkiaSalBitmap() override;
+
+    // SalBitmap methods
+    virtual bool Create(const Size& rSize, sal_uInt16 nBitCount,
+                        const BitmapPalette& rPal) override;
+    virtual bool Create(const SalBitmap& rSalBmp) override;
+    virtual bool Create(const SalBitmap& rSalBmp, SalGraphics* pGraphics) override;
+    virtual bool Create(const SalBitmap& rSalBmp, sal_uInt16 nNewBitCount) override;
+    virtual bool Create(const css::uno::Reference<css::rendering::XBitmapCanvas>& rBitmapCanvas,
+                        Size& rSize, bool bMask = false) override;
+
+    virtual void Destroy() final override;
+
+    virtual Size GetSize() const override;
+    virtual sal_uInt16 GetBitCount() const override;
+
+    virtual BitmapBuffer* AcquireBuffer(BitmapAccessMode nMode) override;
+    virtual void ReleaseBuffer(BitmapBuffer* pBuffer, BitmapAccessMode nMode) override;
+
+    virtual bool GetSystemData(BitmapSystemData& rData) override;
+
+    virtual bool ScalingSupported() const override;
+    virtual bool Scale(const double& rScaleX, const double& rScaleY,
+                       BmpScaleFlag nScaleFlag) override;
+    virtual bool Replace(const Color& rSearchColor, const Color& rReplaceColor,
+                         sal_uInt8 nTol) override;
+    virtual bool InterpretAs8Bit() override;
+    virtual bool ConvertToGreyscale() override;
+
+    const BitmapPalette& Palette() const { return mPalette; }
+    // Returns the contents as SkImage (possibly GPU-backed).
+    const sk_sp<SkImage>& GetSkImage() const;
+
+    // Returns the contents as alpha SkImage (possibly GPU-backed)
+    const sk_sp<SkImage>& GetAlphaSkImage() const;
+
+#ifdef DBG_UTIL
+    void dump(const char* file) const;
+#endif
+
+private:
+    // Reset the cached images allocated in GetSkImage()/GetAlphaSkImage().
+    void ResetCachedData();
+    // Sets the data only as SkImage (will be converted as needed).
+    void ResetToSkImage(sk_sp<SkImage> image);
+    // Resets all data that does not match mSize.
+    void ResetCachedDataBySize();
+    // Call to ensure mBuffer has data (will convert from mImage if necessary).
+    void EnsureBitmapData();
+    void EnsureBitmapData() const { return const_cast<SkiaSalBitmap*>(this)->EnsureBitmapData(); }
+    // Like EnsureBitmapData(), but will also make any shared data unique.
+    // Call before changing the data.
+    void EnsureBitmapUniqueData();
+    // Allocate mBuffer (with uninitialized contents).
+    bool CreateBitmapData();
+    SkBitmap GetAsSkBitmap() const;
+#ifdef DBG_UTIL
+    void verify() const;
+#else
+    void verify() const {};
+#endif
+
+    template <typename charT, typename traits>
+    friend inline std::basic_ostream<charT, traits>&
+    operator<<(std::basic_ostream<charT, traits>& stream, const SkiaSalBitmap* bitmap)
+    {
+        // I/i - has SkImage (on GPU/CPU),
+        // A/a - has alpha SkImage (on GPU/CPU)
+        return stream << static_cast<const void*>(bitmap) << " " << bitmap->GetSize() << "/"
+                      << (bitmap->mImage ? (bitmap->mImage->isTextureBacked() ? "I" : "i") : "")
+                      << (bitmap->mAlphaImage ? (bitmap->mAlphaImage->isTextureBacked() ? "A" : "a")
+                                              : "");
+    }
+
+    BitmapPalette mPalette;
+    int mBitCount = 0; // bpp
+    Size mSize;
+    // The contents of the bitmap may be stored in several different ways:
+    // As mBuffer buffer, which normally stores pixels in the given format.
+    // As SkImage, as cached GPU-backed data, but sometimes also a result of some operation.
+    // There is no "master" storage that the other would be derived from. The usual
+    // mode of operation is that mBuffer holds the data, mImage is created
+    // on demand as GPU-backed cached data by calling GetSkImage(), and the cached mImage
+    // is reset by ResetCachedImage(). But sometimes only mImage will be set and in that case
+    // mBuffer must be filled from it on demand if necessary by EnsureBitmapData().
+    boost::shared_ptr<sal_uInt8[]> mBuffer;
+    int mScanlineSize; // size of one row in mBuffer
+    sk_sp<SkImage> mImage; // possibly GPU-backed
+    sk_sp<SkImage> mAlphaImage; // cached contents as alpha image, possibly GPU-backed
+    // Actual scaling triggered by scale() is done on-demand. This is the size of the pixel
+    // data in mBuffer, if it differs from mSize, then there is a scaling operation pending.
+    Size mPixelsSize;
+    SkFilterQuality mScaleQuality = kHigh_SkFilterQuality; // quality for on-demand scaling
+#ifdef DBG_UTIL
+    int mWriteAccessCount = 0; // number of write AcquireAccess() that have not been released
+#endif
+};
+
+#endif // INCLUDED_VCL_INC_SKIA_SALBMP_H
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/skia/utils.hxx b/vcl/inc/skia/utils.hxx
new file mode 100644
index 000000000..a43ff8f58
--- /dev/null
+++ b/vcl/inc/skia/utils.hxx
@@ -0,0 +1,135 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_VCL_INC_SKIA_UTILS_H
+#define INCLUDED_VCL_INC_SKIA_UTILS_H
+
+#include <vcl/skia/SkiaHelper.hxx>
+
+#include <tools/gen.hxx>
+#include <driverblocklist.hxx>
+
+#include <SkRegion.h>
+#include <tools/sk_app/VulkanWindowContext.h>
+
+namespace SkiaHelper
+{
+// Get the one shared GrContext instance.
+GrContext* getSharedGrContext();
+
+void disableRenderMethod(RenderMethod method);
+
+// Create SkSurface, GPU-backed if possible.
+VCL_DLLPUBLIC sk_sp<SkSurface> createSkSurface(int width, int height,
+                                               SkColorType type = kN32_SkColorType);
+
+inline sk_sp<SkSurface> createSkSurface(const Size& size, SkColorType type = kN32_SkColorType)
+{
+    return createSkSurface(size.Width(), size.Height(), type);
+}
+
+// Create SkImage, GPU-backed if possible.
+VCL_DLLPUBLIC sk_sp<SkImage> createSkImage(const SkBitmap& bitmap);
+
+// Call surface->makeImageSnapshot() and abort on failure.
+VCL_DLLPUBLIC sk_sp<SkImage> makeCheckedImageSnapshot(sk_sp<SkSurface> surface);
+VCL_DLLPUBLIC sk_sp<SkImage> makeCheckedImageSnapshot(sk_sp<SkSurface> surface,
+                                                      const SkIRect& bounds);
+
+// Must be called in any VCL backend before any Skia functionality is used.
+// If not set, Skia will be disabled.
+VCL_DLLPUBLIC void
+    prepareSkia(std::unique_ptr<sk_app::WindowContext> (*createVulkanWindowContext)(bool));
+
+// Shared cache of images.
+void addCachedImage(const OString& key, sk_sp<SkImage> image);
+sk_sp<SkImage> findCachedImage(const OString& key);
+void removeCachedImage(sk_sp<SkImage> image);
+
+#ifdef DBG_UTIL
+void prefillSurface(sk_sp<SkSurface>& surface);
+VCL_DLLPUBLIC void dump(const SkBitmap& bitmap, const char* file);
+VCL_DLLPUBLIC void dump(const sk_sp<SkImage>& image, const char* file);
+VCL_DLLPUBLIC void dump(const sk_sp<SkSurface>& surface, const char* file);
+#endif
+
+extern uint32_t vendorId;
+
+inline DriverBlocklist::DeviceVendor getVendor()
+{
+    return DriverBlocklist::GetVendorFromId(vendorId);
+}
+
+} // namespace
+
+template <typename charT, typename traits>
+inline std::basic_ostream<charT, traits>& operator<<(std::basic_ostream<charT, traits>& stream,
+                                                     const SkRect& rectangle)
+{
+    if (rectangle.isEmpty())
+        return stream << "EMPTY";
+    else
+        return stream << rectangle.width() << 'x' << rectangle.height() << "@(" << rectangle.x()
+                      << ',' << rectangle.y() << ")";
+}
+
+template <typename charT, typename traits>
+inline std::basic_ostream<charT, traits>& operator<<(std::basic_ostream<charT, traits>& stream,
+                                                     const SkIRect& rectangle)
+{
+    if (rectangle.isEmpty())
+        return stream << "EMPTY";
+    else
+        return stream << rectangle.width() << 'x' << rectangle.height() << "@(" << rectangle.x()
+                      << ',' << rectangle.y() << ")";
+}
+
+template <typename charT, typename traits>
+inline std::basic_ostream<charT, traits>& operator<<(std::basic_ostream<charT, traits>& stream,
+                                                     const SkRegion& region)
+{
+    if (region.isEmpty())
+        return stream << "EMPTY";
+    stream << "(";
+    SkRegion::Iterator it(region);
+    for (int i = 0; !it.done(); it.next(), ++i)
+        stream << "[" << i << "] " << it.rect();
+    stream << ")";
+    return stream;
+}
+
+template <typename charT, typename traits>
+inline std::basic_ostream<charT, traits>& operator<<(std::basic_ostream<charT, traits>& stream,
+                                                     const SkImage& image)
+{
+    // G - on GPU
+    return stream << static_cast<const void*>(&image) << " " << Size(image.width(), image.height())
+                  << "/" << (SkColorTypeBytesPerPixel(image.imageInfo().colorType()) * 8)
+                  << (image.isTextureBacked() ? "G" : "");
+}
+template <typename charT, typename traits>
+inline std::basic_ostream<charT, traits>& operator<<(std::basic_ostream<charT, traits>& stream,
+                                                     const sk_sp<SkImage>& image)
+{
+    return stream << *image;
+}
+
+#endif // INCLUDED_VCL_INC_SKIA_UTILS_H
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/skia/win/gdiimpl.hxx b/vcl/inc/skia/win/gdiimpl.hxx
new file mode 100644
index 000000000..564fcd7e9
--- /dev/null
+++ b/vcl/inc/skia/win/gdiimpl.hxx
@@ -0,0 +1,102 @@
+/* -*- 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/.
+ */
+
+#ifndef INCLUDED_VCL_INC_SKIA_WIN_GDIIMPL_HXX
+#define INCLUDED_VCL_INC_SKIA_WIN_GDIIMPL_HXX
+
+#include <memory>
+#include <vcl/dllapi.h>
+
+#include <skia/gdiimpl.hxx>
+#include <win/salgdi.h>
+#include <win/wingdiimpl.hxx>
+#include <o3tl/lru_map.hxx>
+#include <ControlCacheKey.hxx>
+#include <svdata.hxx>
+
+#include <SkFont.h>
+
+class SkTypeface;
+class SkFontMgr;
+class ControlCacheKey;
+
+class SkiaCompatibleDC : public CompatibleDC
+{
+public:
+    SkiaCompatibleDC(SalGraphics& rGraphics, int x, int y, int width, int height);
+
+    virtual std::unique_ptr<Texture> getAsMaskTexture() const override;
+
+    sk_sp<SkImage> getAsImage() const;
+    sk_sp<SkImage> getAsMaskImage() const;
+    sk_sp<SkImage> getAsImageDiff(const SkiaCompatibleDC& white) const;
+
+    struct Texture;
+};
+
+struct SkiaCompatibleDC::Texture : public CompatibleDC::Texture
+{
+    sk_sp<SkImage> image;
+    virtual bool isValid() const { return image.get(); }
+    virtual int GetWidth() const { return image->width(); }
+    virtual int GetHeight() const { return image->height(); }
+};
+
+class WinSkiaSalGraphicsImpl : public SkiaSalGraphicsImpl, public WinSalGraphicsImplBase
+{
+private:
+    WinSalGraphics& mWinParent;
+
+public:
+    WinSkiaSalGraphicsImpl(WinSalGraphics& rGraphics, SalGeometryProvider* mpProvider);
+
+    virtual void DeInit() override;
+    virtual void freeResources() override;
+
+    virtual bool UseRenderNativeControl() const override { return true; }
+    virtual bool TryRenderCachedNativeControl(ControlCacheKey const& rControlCacheKey, int nX,
+                                              int nY) override;
+    virtual bool RenderAndCacheNativeControl(CompatibleDC& rWhite, CompatibleDC& rBlack, int nX,
+                                             int nY, ControlCacheKey& aControlCacheKey) override;
+
+    virtual bool DrawTextLayout(const GenericSalLayout& layout) override;
+    virtual void ClearDevFontCache() override;
+
+    static void prepareSkia();
+
+protected:
+    virtual void createWindowContext(bool forceRaster = false) override;
+    virtual void performFlush() override;
+    sk_sp<SkTypeface> createDirectWriteTypeface(const LOGFONTW& logFont);
+    SkFont::Edging getFontEdging();
+    IDWriteFactory* dwriteFactory;
+    IDWriteGdiInterop* dwriteGdiInterop;
+    sk_sp<SkFontMgr> dwriteFontMgr;
+    bool dwriteDone = false;
+    SkFont::Edging fontEdging;
+    bool fontEdgingDone = false;
+};
+
+typedef std::pair<ControlCacheKey, sk_sp<SkImage>> SkiaControlCachePair;
+typedef o3tl::lru_map<ControlCacheKey, sk_sp<SkImage>, ControlCacheHashFunction>
+    SkiaControlCacheType;
+
+class SkiaControlsCache
+{
+    SkiaControlCacheType cache;
+
+    SkiaControlsCache();
+
+public:
+    static SkiaControlCacheType& get();
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/skia/x11/gdiimpl.hxx b/vcl/inc/skia/x11/gdiimpl.hxx
new file mode 100644
index 000000000..d131d54bf
--- /dev/null
+++ b/vcl/inc/skia/x11/gdiimpl.hxx
@@ -0,0 +1,48 @@
+/* -*- 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/.
+ */
+
+#ifndef INCLUDED_VCL_INC_SKIA_X11_GDIIMPL_HXX
+#define INCLUDED_VCL_INC_SKIA_X11_GDIIMPL_HXX
+
+#include <vcl/dllapi.h>
+
+#include <unx/salgdi.h>
+#include <unx/x11/x11gdiimpl.h>
+#include <skia/gdiimpl.hxx>
+#include <skia/utils.hxx>
+
+class VCL_PLUGIN_PUBLIC X11SkiaSalGraphicsImpl final : public SkiaSalGraphicsImpl,
+                                                       public X11GraphicsImpl
+{
+private:
+    X11SalGraphics& mX11Parent;
+
+public:
+    X11SkiaSalGraphicsImpl(X11SalGraphics& rParent);
+    virtual ~X11SkiaSalGraphicsImpl() override;
+
+    virtual void Init() override;
+    virtual void DeInit() override;
+    virtual void freeResources() override;
+
+    static void prepareSkia();
+
+private:
+    virtual void createWindowContext(bool forceRaster = false) override;
+    virtual void performFlush() override;
+    virtual bool avoidRecreateByResize() const override;
+    static std::unique_ptr<sk_app::WindowContext>
+    createWindowContext(Display* display, Drawable drawable, const XVisualInfo* visual, int width,
+                        int height, SkiaHelper::RenderMethod renderMethod, bool temporary);
+    friend std::unique_ptr<sk_app::WindowContext> createVulkanWindowContext(bool);
+};
+
+#endif // INCLUDED_VCL_INC_SKIA_X11_GDIIMPL_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/skia/x11/salvd.hxx b/vcl/inc/skia/x11/salvd.hxx
new file mode 100644
index 000000000..8ff75175d
--- /dev/null
+++ b/vcl/inc/skia/x11/salvd.hxx
@@ -0,0 +1,46 @@
+/* -*- 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/.
+ */
+
+#ifndef INCLUDED_VCL_INC_SKIA_X11_SALVD_H
+#define INCLUDED_VCL_INC_SKIA_X11_SALVD_H
+
+#include <salvd.hxx>
+
+class X11SkiaSalVirtualDevice : public SalVirtualDevice
+{
+    SalDisplay* mpDisplay;
+    std::unique_ptr<X11SalGraphics> mpGraphics;
+    bool mbGraphics; // is Graphics used
+    SalX11Screen mnXScreen;
+    int mnWidth;
+    int mnHeight;
+
+public:
+    X11SkiaSalVirtualDevice(SalGraphics const* pGraphics, long nDX, long nDY,
+                            const SystemGraphicsData* pData,
+                            std::unique_ptr<X11SalGraphics> pNewGraphics);
+    virtual ~X11SkiaSalVirtualDevice() override;
+
+    // SalGeometryProvider
+    virtual long GetWidth() const override { return mnWidth; }
+    virtual long GetHeight() const override { return mnHeight; }
+
+    SalDisplay* GetDisplay() const { return mpDisplay; }
+    const SalX11Screen& GetXScreenNumber() const { return mnXScreen; }
+
+    virtual SalGraphics* AcquireGraphics() override;
+    virtual void ReleaseGraphics(SalGraphics* pGraphics) override;
+
+    // Set new size, without saving the old contents
+    virtual bool SetSize(long nNewDX, long nNewDY) override;
+};
+
+#endif // INCLUDED_VCL_INC_SKIA_X11_SALVD_H
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/skia/x11/textrender.hxx b/vcl/inc/skia/x11/textrender.hxx
new file mode 100644
index 000000000..d6eda9a04
--- /dev/null
+++ b/vcl/inc/skia/x11/textrender.hxx
@@ -0,0 +1,40 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_VCL_INC_SKIA_TEXTRENDER_HXX
+#define INCLUDED_VCL_INC_SKIA_TEXTRENDER_HXX
+
+#include <unx/freetypetextrender.hxx>
+
+#include <SkFontMgr.h>
+#include <SkFontMgr_fontconfig.h>
+
+class VCL_DLLPUBLIC SkiaTextRender final : public FreeTypeTextRenderImpl
+{
+public:
+    virtual void DrawTextLayout(const GenericSalLayout&, const SalGraphics&) override;
+    virtual void ClearDevFontCache() override;
+
+private:
+    sk_sp<SkFontMgr> fontManager;
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/skia/zone.hxx b/vcl/inc/skia/zone.hxx
new file mode 100644
index 000000000..1f6bbb0dd
--- /dev/null
+++ b/vcl/inc/skia/zone.hxx
@@ -0,0 +1,30 @@
+/* -*- 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/.
+ */
+
+#ifndef INCLUDED_VCL_INC_SKIA_ZONE_H
+#define INCLUDED_VCL_INC_SKIA_ZONE_H
+
+#include <comphelper/crashzone.hxx>
+
+#include <vcl/dllapi.h>
+
+// Used around calls to Skia code to detect crashes in drivers.
+class VCL_DLLPUBLIC SkiaZone : public CrashZone<SkiaZone>
+{
+public:
+    static void hardDisable();
+    static void relaxWatchdogTimings();
+    static const CrashWatchdogTimingsValues& getCrashWatchdogTimingsValues();
+    static void checkDebug(int nUnchanged, const CrashWatchdogTimingsValues& aTimingValues);
+    static const char* name() { return "Skia"; }
+};
+
+#endif // INCLUDED_VCL_INC_SKIA_ZONE_H
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */