bool
SourceSurfaceSkia::InitFromTexture(DrawTargetSkia* aOwner,
unsigned int aTexture,
const IntSize &aSize,
SurfaceFormat aFormat)
{
MOZ_ASSERT(aOwner, "null GrContext");
#ifdef USE_SKIA_GPU
GrBackendTextureDesc skiaTexGlue;
mSize.width = skiaTexGlue.fWidth = aSize.width;
mSize.height = skiaTexGlue.fHeight = aSize.height;
skiaTexGlue.fFlags = kNone_GrBackendTextureFlag;
skiaTexGlue.fOrigin = kBottomLeft_GrSurfaceOrigin;
skiaTexGlue.fConfig = GfxFormatToGrConfig(aFormat);
skiaTexGlue.fSampleCnt = 0;
skiaTexGlue.fTextureHandle = aTexture;
GrTexture *skiaTexture = aOwner->mGrContext->wrapBackendTexture(skiaTexGlue);
SkImageInfo imgInfo = SkImageInfo::Make(aSize.width, aSize.height, GfxFormatToSkiaColorType(aFormat), kOpaque_SkAlphaType);
SkGrPixelRef *texRef = new SkGrPixelRef(imgInfo, skiaTexture, false);
mBitmap.setInfo(imgInfo);
mBitmap.setPixelRef(texRef);
mFormat = aFormat;
mStride = mBitmap.rowBytes();
#endif
mDrawTarget = aOwner;
return true;
}
bool
DrawTargetSkia::InitWithGrContext(GrContext* aGrContext,
const IntSize &aSize,
SurfaceFormat aFormat)
{
MOZ_ASSERT(aGrContext, "null GrContext");
mGrContext = aGrContext;
mSize = aSize;
mFormat = aFormat;
GrTextureDesc targetDescriptor;
targetDescriptor.fFlags = kRenderTarget_GrTextureFlagBit;
targetDescriptor.fWidth = mSize.width;
targetDescriptor.fHeight = mSize.height;
targetDescriptor.fConfig = GfxFormatToGrConfig(mFormat);
targetDescriptor.fOrigin = kBottomLeft_GrSurfaceOrigin;
targetDescriptor.fSampleCnt = 0;
SkAutoTUnref<GrTexture> skiaTexture(mGrContext->createUncachedTexture(targetDescriptor, NULL, 0));
if (!skiaTexture) {
return false;
}
mTexture = (uint32_t)skiaTexture->getTextureHandle();
SkAutoTUnref<SkBaseDevice> device(new SkGpuDevice(mGrContext.get(), skiaTexture->asRenderTarget()));
SkAutoTUnref<SkCanvas> canvas(new SkCanvas(device.get()));
mCanvas = canvas.get();
return true;
}
void
DrawTargetSkia::InitWithFBO(unsigned int aFBOID, GrContext* aGrContext, const IntSize &aSize, SurfaceFormat aFormat)
{
GrPlatformRenderTargetDesc targetDescriptor;
targetDescriptor.fWidth = aSize.width;
targetDescriptor.fHeight = aSize.height;
targetDescriptor.fConfig = GfxFormatToGrConfig(aFormat);
targetDescriptor.fSampleCnt = 0;
targetDescriptor.fRenderTargetHandle = aFBOID;
SkAutoTUnref<GrRenderTarget> target(aGrContext->createPlatformRenderTarget(targetDescriptor));
SkAutoTUnref<SkDevice> device(new SkGpuDevice(aGrContext, target.get()));
SkAutoTUnref<SkCanvas> canvas(new SkCanvas(device.get()));
mSize = aSize;
mDevice = device.get();
mCanvas = canvas.get();
mFormat = aFormat;
}
