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gecko-dev/gfx/2d/DrawTargetSkia.cpp

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* 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 "DrawTargetSkia.h"
#include "SourceSurfaceSkia.h"
#include "ScaledFontBase.h"
#include "ScaledFontCairo.h"
#include "skia/SkDevice.h"
#include "FilterNodeSoftware.h"
#ifdef USE_SKIA_GPU
#include "skia/SkGpuDevice.h"
#include "skia/GrGLInterface.h"
#endif
#include "skia/SkTypeface.h"
#include "skia/SkGradientShader.h"
#include "skia/SkBlurDrawLooper.h"
#include "skia/SkBlurMaskFilter.h"
#include "skia/SkColorFilter.h"
#include "skia/SkLayerRasterizer.h"
#include "skia/SkLayerDrawLooper.h"
#include "skia/SkDashPathEffect.h"
#include "Logging.h"
#include "HelpersSkia.h"
#include "Tools.h"
#include "DataSurfaceHelpers.h"
#include <algorithm>
namespace mozilla {
namespace gfx {
class GradientStopsSkia : public GradientStops
{
public:
GradientStopsSkia(const std::vector<GradientStop>& aStops, uint32_t aNumStops, ExtendMode aExtendMode)
: mCount(aNumStops)
, mExtendMode(aExtendMode)
{
if (mCount == 0) {
return;
}
// Skia gradients always require a stop at 0.0 and 1.0, insert these if
// we don't have them.
uint32_t shift = 0;
if (aStops[0].offset != 0) {
mCount++;
shift = 1;
}
if (aStops[aNumStops-1].offset != 1) {
mCount++;
}
mColors.resize(mCount);
mPositions.resize(mCount);
if (aStops[0].offset != 0) {
mColors[0] = ColorToSkColor(aStops[0].color, 1.0);
mPositions[0] = 0;
}
for (uint32_t i = 0; i < aNumStops; i++) {
mColors[i + shift] = ColorToSkColor(aStops[i].color, 1.0);
mPositions[i + shift] = SkFloatToScalar(aStops[i].offset);
}
if (aStops[aNumStops-1].offset != 1) {
mColors[mCount-1] = ColorToSkColor(aStops[aNumStops-1].color, 1.0);
mPositions[mCount-1] = SK_Scalar1;
}
}
BackendType GetBackendType() const { return BackendType::SKIA; }
std::vector<SkColor> mColors;
std::vector<SkScalar> mPositions;
int mCount;
ExtendMode mExtendMode;
};
#ifdef USE_SKIA_GPU
int DrawTargetSkia::sTextureCacheCount = 256;
int DrawTargetSkia::sTextureCacheSizeInBytes = 96*1024*1024;
static std::vector<DrawTargetSkia*>&
GLDrawTargets()
{
static std::vector<DrawTargetSkia*> targets;
return targets;
}
void
DrawTargetSkia::RebalanceCacheLimits()
{
// Divide the global cache limits equally between all currently active GL-backed
// Skia DrawTargets.
std::vector<DrawTargetSkia*>& targets = GLDrawTargets();
uint32_t targetCount = targets.size();
if (targetCount == 0)
return;
int individualCacheSize = sTextureCacheSizeInBytes / targetCount;
for (uint32_t i = 0; i < targetCount; i++) {
targets[i]->SetCacheLimits(sTextureCacheCount, individualCacheSize);
}
}
static void
AddGLDrawTarget(DrawTargetSkia* target)
{
GLDrawTargets().push_back(target);
DrawTargetSkia::RebalanceCacheLimits();
}
static void
RemoveGLDrawTarget(DrawTargetSkia* target)
{
std::vector<DrawTargetSkia*>& targets = GLDrawTargets();
std::vector<DrawTargetSkia*>::iterator it = std::find(targets.begin(), targets.end(), target);
if (it != targets.end()) {
targets.erase(it);
DrawTargetSkia::RebalanceCacheLimits();
}
}
void
DrawTargetSkia::SetGlobalCacheLimits(int aCount, int aSizeInBytes)
{
sTextureCacheCount = aCount;
sTextureCacheSizeInBytes = aSizeInBytes;
DrawTargetSkia::RebalanceCacheLimits();
}
void
DrawTargetSkia::PurgeCaches()
{
if (mGrContext) {
mGrContext->freeGpuResources();
}
}
/* static */ void
DrawTargetSkia::PurgeAllCaches()
{
std::vector<DrawTargetSkia*>& targets = GLDrawTargets();
uint32_t targetCount = targets.size();
for (uint32_t i = 0; i < targetCount; i++) {
targets[i]->PurgeCaches();
}
}
#endif
/**
* When constructing a temporary SkBitmap via GetBitmapForSurface, we may also
* have to construct a temporary DataSourceSurface, which must live as long as
* the SkBitmap. So we return a pair of the SkBitmap and the (optional)
* temporary surface.
*/
struct TempBitmap
{
SkBitmap mBitmap;
RefPtr<SourceSurface> mTmpSurface;
};
static TempBitmap
GetBitmapForSurface(SourceSurface* aSurface)
{
TempBitmap result;
if (aSurface->GetType() == SurfaceType::SKIA) {
result.mBitmap = static_cast<SourceSurfaceSkia*>(aSurface)->GetBitmap();
return result;
}
RefPtr<DataSourceSurface> surf = aSurface->GetDataSurface();
if (!surf) {
MOZ_CRASH("Non-skia SourceSurfaces need to be DataSourceSurfaces");
}
result.mBitmap.setConfig(GfxFormatToSkiaConfig(surf->GetFormat()),
surf->GetSize().width, surf->GetSize().height,
surf->Stride());
result.mBitmap.setPixels(surf->GetData());
result.mTmpSurface = surf.forget();
return result;
}
DrawTargetSkia::DrawTargetSkia()
: mSnapshot(nullptr)
{
}
DrawTargetSkia::~DrawTargetSkia()
{
#ifdef USE_SKIA_GPU
RemoveGLDrawTarget(this);
#endif
}
TemporaryRef<SourceSurface>
DrawTargetSkia::Snapshot()
{
RefPtr<SourceSurfaceSkia> snapshot = mSnapshot;
if (!snapshot) {
snapshot = new SourceSurfaceSkia();
mSnapshot = snapshot;
if (!snapshot->InitFromCanvas(mCanvas.get(), mFormat, this))
return nullptr;
}
return snapshot;
}
static void
SetPaintPattern(SkPaint& aPaint, const Pattern& aPattern, TempBitmap& aTmpBitmap,
Float aAlpha = 1.0)
{
switch (aPattern.GetType()) {
case PatternType::COLOR: {
Color color = static_cast<const ColorPattern&>(aPattern).mColor;
aPaint.setColor(ColorToSkColor(color, aAlpha));
break;
}
case PatternType::LINEAR_GRADIENT: {
const LinearGradientPattern& pat = static_cast<const LinearGradientPattern&>(aPattern);
GradientStopsSkia *stops = static_cast<GradientStopsSkia*>(pat.mStops.get());
SkShader::TileMode mode = ExtendModeToTileMode(stops->mExtendMode);
if (stops->mCount >= 2) {
SkPoint points[2];
points[0] = SkPoint::Make(SkFloatToScalar(pat.mBegin.x), SkFloatToScalar(pat.mBegin.y));
points[1] = SkPoint::Make(SkFloatToScalar(pat.mEnd.x), SkFloatToScalar(pat.mEnd.y));
SkShader* shader = SkGradientShader::CreateLinear(points,
&stops->mColors.front(),
&stops->mPositions.front(),
stops->mCount,
mode);
if (shader) {
SkMatrix mat;
GfxMatrixToSkiaMatrix(pat.mMatrix, mat);
shader->setLocalMatrix(mat);
SkSafeUnref(aPaint.setShader(shader));
}
} else {
aPaint.setColor(SkColorSetARGB(0, 0, 0, 0));
}
break;
}
case PatternType::RADIAL_GRADIENT: {
const RadialGradientPattern& pat = static_cast<const RadialGradientPattern&>(aPattern);
GradientStopsSkia *stops = static_cast<GradientStopsSkia*>(pat.mStops.get());
SkShader::TileMode mode = ExtendModeToTileMode(stops->mExtendMode);
if (stops->mCount >= 2) {
SkPoint points[2];
points[0] = SkPoint::Make(SkFloatToScalar(pat.mCenter1.x), SkFloatToScalar(pat.mCenter1.y));
points[1] = SkPoint::Make(SkFloatToScalar(pat.mCenter2.x), SkFloatToScalar(pat.mCenter2.y));
SkShader* shader = SkGradientShader::CreateTwoPointConical(points[0],
SkFloatToScalar(pat.mRadius1),
points[1],
SkFloatToScalar(pat.mRadius2),
&stops->mColors.front(),
&stops->mPositions.front(),
stops->mCount,
mode);
if (shader) {
SkMatrix mat;
GfxMatrixToSkiaMatrix(pat.mMatrix, mat);
shader->setLocalMatrix(mat);
SkSafeUnref(aPaint.setShader(shader));
}
} else {
aPaint.setColor(SkColorSetARGB(0, 0, 0, 0));
}
break;
}
case PatternType::SURFACE: {
const SurfacePattern& pat = static_cast<const SurfacePattern&>(aPattern);
aTmpBitmap = GetBitmapForSurface(pat.mSurface);
const SkBitmap& bitmap = aTmpBitmap.mBitmap;
SkShader::TileMode mode = ExtendModeToTileMode(pat.mExtendMode);
SkShader* shader = SkShader::CreateBitmapShader(bitmap, mode, mode);
SkMatrix mat;
GfxMatrixToSkiaMatrix(pat.mMatrix, mat);
shader->setLocalMatrix(mat);
SkSafeUnref(aPaint.setShader(shader));
if (pat.mFilter == Filter::POINT) {
aPaint.setFilterBitmap(false);
}
break;
}
}
}
struct AutoPaintSetup {
AutoPaintSetup(SkCanvas *aCanvas, const DrawOptions& aOptions, const Pattern& aPattern)
: mNeedsRestore(false), mAlpha(1.0)
{
Init(aCanvas, aOptions);
SetPaintPattern(mPaint, aPattern, mTmpBitmap, mAlpha);
}
AutoPaintSetup(SkCanvas *aCanvas, const DrawOptions& aOptions)
: mNeedsRestore(false), mAlpha(1.0)
{
Init(aCanvas, aOptions);
}
~AutoPaintSetup()
{
if (mNeedsRestore) {
mCanvas->restore();
}
}
void Init(SkCanvas *aCanvas, const DrawOptions& aOptions)
{
mPaint.setXfermodeMode(GfxOpToSkiaOp(aOptions.mCompositionOp));
mCanvas = aCanvas;
//TODO: Can we set greyscale somehow?
if (aOptions.mAntialiasMode != AntialiasMode::NONE) {
mPaint.setAntiAlias(true);
} else {
mPaint.setAntiAlias(false);
}
// TODO: We could skip the temporary for operator_source and just
// clear the clip rect. The other operators would be harder
// but could be worth it to skip pushing a group.
if (!IsOperatorBoundByMask(aOptions.mCompositionOp)) {
mPaint.setXfermodeMode(SkXfermode::kSrcOver_Mode);
SkPaint temp;
temp.setXfermodeMode(GfxOpToSkiaOp(aOptions.mCompositionOp));
temp.setAlpha(U8CPU(aOptions.mAlpha*255));
//TODO: Get a rect here
mCanvas->saveLayer(nullptr, &temp);
mNeedsRestore = true;
} else {
mPaint.setAlpha(U8CPU(aOptions.mAlpha*255.0));
mAlpha = aOptions.mAlpha;
}
mPaint.setFilterBitmap(true);
}
// TODO: Maybe add an operator overload to access this easier?
SkPaint mPaint;
TempBitmap mTmpBitmap;
bool mNeedsRestore;
SkCanvas* mCanvas;
Float mAlpha;
};
void
DrawTargetSkia::Flush()
{
mCanvas->flush();
}
void
DrawTargetSkia::DrawSurface(SourceSurface *aSurface,
const Rect &aDest,
const Rect &aSource,
const DrawSurfaceOptions &aSurfOptions,
const DrawOptions &aOptions)
{
if (!(aSurface->GetType() == SurfaceType::SKIA || aSurface->GetType() == SurfaceType::DATA)) {
return;
}
if (aSource.IsEmpty()) {
return;
}
MarkChanged();
SkRect destRect = RectToSkRect(aDest);
SkRect sourceRect = RectToSkRect(aSource);
TempBitmap bitmap = GetBitmapForSurface(aSurface);
AutoPaintSetup paint(mCanvas.get(), aOptions);
if (aSurfOptions.mFilter == Filter::POINT) {
paint.mPaint.setFilterBitmap(false);
}
mCanvas->drawBitmapRectToRect(bitmap.mBitmap, &sourceRect, destRect, &paint.mPaint);
}
void
DrawTargetSkia::DrawFilter(FilterNode *aNode,
const Rect &aSourceRect,
const Point &aDestPoint,
const DrawOptions &aOptions)
{
FilterNodeSoftware* filter = static_cast<FilterNodeSoftware*>(aNode);
filter->Draw(this, aSourceRect, aDestPoint, aOptions);
}
void
DrawTargetSkia::DrawSurfaceWithShadow(SourceSurface *aSurface,
const Point &aDest,
const Color &aColor,
const Point &aOffset,
Float aSigma,
CompositionOp aOperator)
{
MarkChanged();
mCanvas->save(SkCanvas::kMatrix_SaveFlag);
mCanvas->resetMatrix();
uint32_t blurFlags = SkBlurMaskFilter::kHighQuality_BlurFlag |
SkBlurMaskFilter::kIgnoreTransform_BlurFlag;
TempBitmap bitmap = GetBitmapForSurface(aSurface);
SkShader* shader = SkShader::CreateBitmapShader(bitmap.mBitmap,
SkShader::kClamp_TileMode, SkShader::kClamp_TileMode);
SkMatrix matrix;
matrix.reset();
matrix.setTranslateX(SkFloatToScalar(aDest.x));
matrix.setTranslateY(SkFloatToScalar(aDest.y));
shader->setLocalMatrix(matrix);
SkLayerDrawLooper* dl = new SkLayerDrawLooper;
SkLayerDrawLooper::LayerInfo info;
info.fPaintBits |= SkLayerDrawLooper::kShader_Bit;
SkPaint *layerPaint = dl->addLayer(info);
layerPaint->setShader(shader);
info.fPaintBits = 0;
info.fPaintBits |= SkLayerDrawLooper::kMaskFilter_Bit;
info.fPaintBits |= SkLayerDrawLooper::kColorFilter_Bit;
info.fColorMode = SkXfermode::kDst_Mode;
info.fOffset.set(SkFloatToScalar(aOffset.x), SkFloatToScalar(aOffset.y));
info.fPostTranslate = true;
SkMaskFilter* mf = SkBlurMaskFilter::Create(aSigma, SkBlurMaskFilter::kNormal_BlurStyle, blurFlags);
SkColor color = ColorToSkColor(aColor, 1);
SkColorFilter* cf = SkColorFilter::CreateModeFilter(color, SkXfermode::kSrcIn_Mode);
layerPaint = dl->addLayer(info);
SkSafeUnref(layerPaint->setMaskFilter(mf));
SkSafeUnref(layerPaint->setColorFilter(cf));
layerPaint->setColor(color);
// TODO: This is using the rasterizer to calculate an alpha mask
// on both the shadow and normal layers. We should fix this
// properly so it only happens for the shadow layer
SkLayerRasterizer *raster = new SkLayerRasterizer();
SkPaint maskPaint;
SkSafeUnref(maskPaint.setShader(shader));
raster->addLayer(maskPaint, 0, 0);
SkPaint paint;
paint.setAntiAlias(true);
SkSafeUnref(paint.setRasterizer(raster));
paint.setXfermodeMode(GfxOpToSkiaOp(aOperator));
SkSafeUnref(paint.setLooper(dl));
SkRect rect = RectToSkRect(Rect(Float(aDest.x), Float(aDest.y),
Float(bitmap.mBitmap.width()), Float(bitmap.mBitmap.height())));
mCanvas->drawRect(rect, paint);
mCanvas->restore();
}
void
DrawTargetSkia::FillRect(const Rect &aRect,
const Pattern &aPattern,
const DrawOptions &aOptions)
{
MarkChanged();
SkRect rect = RectToSkRect(aRect);
AutoPaintSetup paint(mCanvas.get(), aOptions, aPattern);
mCanvas->drawRect(rect, paint.mPaint);
}
void
DrawTargetSkia::Stroke(const Path *aPath,
const Pattern &aPattern,
const StrokeOptions &aStrokeOptions,
const DrawOptions &aOptions)
{
MarkChanged();
MOZ_ASSERT(aPath, "Null path");
if (aPath->GetBackendType() != BackendType::SKIA) {
return;
}
const PathSkia *skiaPath = static_cast<const PathSkia*>(aPath);
AutoPaintSetup paint(mCanvas.get(), aOptions, aPattern);
if (!StrokeOptionsToPaint(paint.mPaint, aStrokeOptions)) {
return;
}
mCanvas->drawPath(skiaPath->GetPath(), paint.mPaint);
}
void
DrawTargetSkia::StrokeRect(const Rect &aRect,
const Pattern &aPattern,
const StrokeOptions &aStrokeOptions,
const DrawOptions &aOptions)
{
MarkChanged();
AutoPaintSetup paint(mCanvas.get(), aOptions, aPattern);
if (!StrokeOptionsToPaint(paint.mPaint, aStrokeOptions)) {
return;
}
mCanvas->drawRect(RectToSkRect(aRect), paint.mPaint);
}
void
DrawTargetSkia::StrokeLine(const Point &aStart,
const Point &aEnd,
const Pattern &aPattern,
const StrokeOptions &aStrokeOptions,
const DrawOptions &aOptions)
{
MarkChanged();
AutoPaintSetup paint(mCanvas.get(), aOptions, aPattern);
if (!StrokeOptionsToPaint(paint.mPaint, aStrokeOptions)) {
return;
}
mCanvas->drawLine(SkFloatToScalar(aStart.x), SkFloatToScalar(aStart.y),
SkFloatToScalar(aEnd.x), SkFloatToScalar(aEnd.y),
paint.mPaint);
}
void
DrawTargetSkia::Fill(const Path *aPath,
const Pattern &aPattern,
const DrawOptions &aOptions)
{
MarkChanged();
if (aPath->GetBackendType() != BackendType::SKIA) {
return;
}
const PathSkia *skiaPath = static_cast<const PathSkia*>(aPath);
AutoPaintSetup paint(mCanvas.get(), aOptions, aPattern);
mCanvas->drawPath(skiaPath->GetPath(), paint.mPaint);
}
void
DrawTargetSkia::FillGlyphs(ScaledFont *aFont,
const GlyphBuffer &aBuffer,
const Pattern &aPattern,
const DrawOptions &aOptions,
const GlyphRenderingOptions *aRenderingOptions)
{
if (aFont->GetType() != FontType::MAC &&
aFont->GetType() != FontType::SKIA &&
aFont->GetType() != FontType::GDI) {
return;
}
MarkChanged();
ScaledFontBase* skiaFont = static_cast<ScaledFontBase*>(aFont);
AutoPaintSetup paint(mCanvas.get(), aOptions, aPattern);
paint.mPaint.setTypeface(skiaFont->GetSkTypeface());
paint.mPaint.setTextSize(SkFloatToScalar(skiaFont->mSize));
paint.mPaint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
if (aRenderingOptions && aRenderingOptions->GetType() == FontType::CAIRO) {
switch (static_cast<const GlyphRenderingOptionsCairo*>(aRenderingOptions)->GetHinting()) {
case FontHinting::NONE:
paint.mPaint.setHinting(SkPaint::kNo_Hinting);
break;
case FontHinting::LIGHT:
paint.mPaint.setHinting(SkPaint::kSlight_Hinting);
break;
case FontHinting::NORMAL:
paint.mPaint.setHinting(SkPaint::kNormal_Hinting);
break;
case FontHinting::FULL:
paint.mPaint.setHinting(SkPaint::kFull_Hinting);
break;
}
if (static_cast<const GlyphRenderingOptionsCairo*>(aRenderingOptions)->GetAutoHinting()) {
paint.mPaint.setAutohinted(true);
}
} else {
paint.mPaint.setHinting(SkPaint::kNormal_Hinting);
}
std::vector<uint16_t> indices;
std::vector<SkPoint> offsets;
indices.resize(aBuffer.mNumGlyphs);
offsets.resize(aBuffer.mNumGlyphs);
for (unsigned int i = 0; i < aBuffer.mNumGlyphs; i++) {
indices[i] = aBuffer.mGlyphs[i].mIndex;
offsets[i].fX = SkFloatToScalar(aBuffer.mGlyphs[i].mPosition.x);
offsets[i].fY = SkFloatToScalar(aBuffer.mGlyphs[i].mPosition.y);
}
mCanvas->drawPosText(&indices.front(), aBuffer.mNumGlyphs*2, &offsets.front(), paint.mPaint);
}
void
DrawTargetSkia::Mask(const Pattern &aSource,
const Pattern &aMask,
const DrawOptions &aOptions)
{
MarkChanged();
AutoPaintSetup paint(mCanvas.get(), aOptions, aSource);
SkPaint maskPaint;
TempBitmap tmpBitmap;
SetPaintPattern(maskPaint, aMask, tmpBitmap);
SkLayerRasterizer *raster = new SkLayerRasterizer();
raster->addLayer(maskPaint);
SkSafeUnref(paint.mPaint.setRasterizer(raster));
mCanvas->drawRect(SkRectCoveringWholeSurface(), paint.mPaint);
}
void
DrawTargetSkia::MaskSurface(const Pattern &aSource,
SourceSurface *aMask,
Point aOffset,
const DrawOptions &aOptions)
{
MarkChanged();
AutoPaintSetup paint(mCanvas.get(), aOptions, aSource);
SkPaint maskPaint;
TempBitmap tmpBitmap;
SetPaintPattern(maskPaint, SurfacePattern(aMask, ExtendMode::CLAMP), tmpBitmap);
SkMatrix transform = maskPaint.getShader()->getLocalMatrix();
transform.postTranslate(SkFloatToScalar(aOffset.x), SkFloatToScalar(aOffset.y));
maskPaint.getShader()->setLocalMatrix(transform);
SkLayerRasterizer *raster = new SkLayerRasterizer();
raster->addLayer(maskPaint);
SkSafeUnref(paint.mPaint.setRasterizer(raster));
IntSize size = aMask->GetSize();
Rect rect = Rect(aOffset.x, aOffset.y, size.width, size.height);
mCanvas->drawRect(RectToSkRect(rect), paint.mPaint);
}
TemporaryRef<SourceSurface>
DrawTargetSkia::CreateSourceSurfaceFromData(unsigned char *aData,
const IntSize &aSize,
int32_t aStride,
SurfaceFormat aFormat) const
{
RefPtr<SourceSurfaceSkia> newSurf = new SourceSurfaceSkia();
if (!newSurf->InitFromData(aData, aSize, aStride, aFormat)) {
gfxDebug() << *this << ": Failure to create source surface from data. Size: " << aSize;
return nullptr;
}
return newSurf;
}
TemporaryRef<DrawTarget>
DrawTargetSkia::CreateSimilarDrawTarget(const IntSize &aSize, SurfaceFormat aFormat) const
{
RefPtr<DrawTargetSkia> target = new DrawTargetSkia();
if (!target->Init(aSize, aFormat)) {
return nullptr;
}
return target;
}
TemporaryRef<SourceSurface>
DrawTargetSkia::OptimizeSourceSurface(SourceSurface *aSurface) const
{
if (aSurface->GetType() == SurfaceType::SKIA) {
return aSurface;
}
if (aSurface->GetType() != SurfaceType::DATA) {
return nullptr;
}
RefPtr<DataSourceSurface> data = aSurface->GetDataSurface();
RefPtr<SourceSurface> surface = CreateSourceSurfaceFromData(data->GetData(),
data->GetSize(),
data->Stride(),
data->GetFormat());
return data.forget();
}
TemporaryRef<SourceSurface>
DrawTargetSkia::CreateSourceSurfaceFromNativeSurface(const NativeSurface &aSurface) const
{
return nullptr;
}
void
DrawTargetSkia::CopySurface(SourceSurface *aSurface,
const IntRect& aSourceRect,
const IntPoint &aDestination)
{
//TODO: We could just use writePixels() here if the sourceRect is the entire source
if (aSurface->GetType() != SurfaceType::SKIA) {
return;
}
MarkChanged();
TempBitmap bitmap = GetBitmapForSurface(aSurface);
mCanvas->save();
mCanvas->resetMatrix();
SkRect dest = IntRectToSkRect(IntRect(aDestination.x, aDestination.y, aSourceRect.width, aSourceRect.height));
SkIRect source = IntRectToSkIRect(aSourceRect);
mCanvas->clipRect(dest, SkRegion::kReplace_Op);
SkPaint paint;
if (mCanvas->getDevice()->config() == SkBitmap::kRGB_565_Config) {
// Set the xfermode to SOURCE_OVER to workaround
// http://code.google.com/p/skia/issues/detail?id=628
// RGB565 is opaque so they're equivalent anyway
paint.setXfermodeMode(SkXfermode::kSrcOver_Mode);
} else {
paint.setXfermodeMode(SkXfermode::kSrc_Mode);
}
mCanvas->drawBitmapRect(bitmap.mBitmap, &source, dest, &paint);
mCanvas->restore();
}
bool
DrawTargetSkia::Init(const IntSize &aSize, SurfaceFormat aFormat)
{
SkAutoTUnref<SkDevice> device(new SkDevice(GfxFormatToSkiaConfig(aFormat),
aSize.width, aSize.height,
aFormat == SurfaceFormat::B8G8R8X8));
SkBitmap bitmap = device->accessBitmap(true);
if (!bitmap.allocPixels()) {
return false;
}
bitmap.eraseARGB(0, 0, 0, 0);
SkAutoTUnref<SkCanvas> canvas(new SkCanvas(device.get()));
mSize = aSize;
mCanvas = canvas.get();
mFormat = aFormat;
return true;
}
#ifdef USE_SKIA_GPU
void
DrawTargetSkia::InitWithGLContextAndGrGLInterface(GenericRefCountedBase* aGLContext,
GrGLInterface* aGrGLInterface,
const IntSize &aSize,
SurfaceFormat aFormat)
{
mGLContext = aGLContext;
mSize = aSize;
mFormat = aFormat;
mGrGLInterface = aGrGLInterface;
mGrGLInterface->fCallbackData = reinterpret_cast<GrGLInterfaceCallbackData>(this);
GrBackendContext backendContext = reinterpret_cast<GrBackendContext>(aGrGLInterface);
SkAutoTUnref<GrContext> gr(GrContext::Create(kOpenGL_GrBackend, backendContext));
mGrContext = gr.get();
GrBackendRenderTargetDesc targetDescriptor;
targetDescriptor.fWidth = mSize.width;
targetDescriptor.fHeight = mSize.height;
targetDescriptor.fConfig = GfxFormatToGrConfig(mFormat);
targetDescriptor.fOrigin = kBottomLeft_GrSurfaceOrigin;
targetDescriptor.fSampleCnt = 0;
targetDescriptor.fRenderTargetHandle = 0; // GLContext always exposes the right framebuffer as id 0
SkAutoTUnref<GrRenderTarget> target(mGrContext->wrapBackendRenderTarget(targetDescriptor));
SkAutoTUnref<SkDevice> device(new SkGpuDevice(mGrContext.get(), target.get()));
SkAutoTUnref<SkCanvas> canvas(new SkCanvas(device.get()));
mCanvas = canvas.get();
AddGLDrawTarget(this);
}
void
DrawTargetSkia::SetCacheLimits(int aCount, int aSizeInBytes)
{
MOZ_ASSERT(mGrContext, "No GrContext!");
mGrContext->setTextureCacheLimits(aCount, aSizeInBytes);
}
#endif
void
DrawTargetSkia::Init(unsigned char* aData, const IntSize &aSize, int32_t aStride, SurfaceFormat aFormat)
{
bool isOpaque = false;
if (aFormat == SurfaceFormat::B8G8R8X8) {
// We have to manually set the A channel to be 255 as Skia doesn't understand BGRX
ConvertBGRXToBGRA(aData, aSize, aStride);
isOpaque = true;
}
SkBitmap bitmap;
bitmap.setConfig(GfxFormatToSkiaConfig(aFormat), aSize.width, aSize.height, aStride);
bitmap.setPixels(aData);
bitmap.setIsOpaque(isOpaque);
SkAutoTUnref<SkCanvas> canvas(new SkCanvas(new SkDevice(bitmap)));
mSize = aSize;
mCanvas = canvas.get();
mFormat = aFormat;
}
void
DrawTargetSkia::SetTransform(const Matrix& aTransform)
{
SkMatrix mat;
GfxMatrixToSkiaMatrix(aTransform, mat);
mCanvas->setMatrix(mat);
mTransform = aTransform;
}
TemporaryRef<PathBuilder>
DrawTargetSkia::CreatePathBuilder(FillRule aFillRule) const
{
RefPtr<PathBuilderSkia> pb = new PathBuilderSkia(aFillRule);
return pb;
}
void
DrawTargetSkia::ClearRect(const Rect &aRect)
{
MarkChanged();
SkPaint paint;
mCanvas->save();
mCanvas->clipRect(RectToSkRect(aRect), SkRegion::kIntersect_Op, true);
paint.setColor(SkColorSetARGB(0, 0, 0, 0));
paint.setXfermodeMode(SkXfermode::kSrc_Mode);
mCanvas->drawPaint(paint);
mCanvas->restore();
}
void
DrawTargetSkia::PushClip(const Path *aPath)
{
if (aPath->GetBackendType() != BackendType::SKIA) {
return;
}
const PathSkia *skiaPath = static_cast<const PathSkia*>(aPath);
mCanvas->save(SkCanvas::kClip_SaveFlag);
mCanvas->clipPath(skiaPath->GetPath(), SkRegion::kIntersect_Op, true);
}
void
DrawTargetSkia::PushClipRect(const Rect& aRect)
{
SkRect rect = RectToSkRect(aRect);
mCanvas->save(SkCanvas::kClip_SaveFlag);
mCanvas->clipRect(rect, SkRegion::kIntersect_Op, true);
}
void
DrawTargetSkia::PopClip()
{
mCanvas->restore();
}
TemporaryRef<GradientStops>
DrawTargetSkia::CreateGradientStops(GradientStop *aStops, uint32_t aNumStops, ExtendMode aExtendMode) const
{
std::vector<GradientStop> stops;
stops.resize(aNumStops);
for (uint32_t i = 0; i < aNumStops; i++) {
stops[i] = aStops[i];
}
std::stable_sort(stops.begin(), stops.end());
return new GradientStopsSkia(stops, aNumStops, aExtendMode);
}
TemporaryRef<FilterNode>
DrawTargetSkia::CreateFilter(FilterType aType)
{
return FilterNodeSoftware::Create(aType);
}
void
DrawTargetSkia::MarkChanged()
{
if (mSnapshot) {
mSnapshot->DrawTargetWillChange();
mSnapshot = nullptr;
}
}
// Return a rect (in user space) that covers the entire surface by applying
// the inverse of GetTransform() to (0, 0, mSize.width, mSize.height).
SkRect
DrawTargetSkia::SkRectCoveringWholeSurface() const
{
return RectToSkRect(mTransform.TransformBounds(Rect(0, 0, mSize.width, mSize.height)));
}
void
DrawTargetSkia::SnapshotDestroyed()
{
mSnapshot = nullptr;
}
}
}
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