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Bug 1006198 - Use Moz2D for WebGL snapshot readback. r=jgilbert

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This commit is contained in:
Matt Woodrow 2014-05-13 14:20:26 +12:00
parent dbc26acf88
commit 3f0708c419
1 changed files with 7 additions and 10 deletions
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17
content/canvas/src/WebGLContext.cpp
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@ -1337,10 +1337,10 @@ WebGLContext::GetSurfaceSnapshot(bool* aPremultAlpha)
if (!gl)
return nullptr;
nsRefPtr<gfxImageSurface> surf = new gfxImageSurface(gfxIntSize(mWidth, mHeight),
gfxImageFormat::ARGB32,
mWidth * 4, 0, false);
if (surf->CairoStatus() != 0) {
RefPtr<DataSourceSurface> surf = Factory::CreateDataSourceSurfaceWithStride(IntSize(mWidth, mHeight),
SurfaceFormat::B8G8R8A8,
mWidth * 4);
if (!surf) {
return nullptr;
}
@ -1348,7 +1348,7 @@ WebGLContext::GetSurfaceSnapshot(bool* aPremultAlpha)
{
ScopedBindFramebuffer autoFB(gl, 0);
ClearBackbufferIfNeeded();
ReadPixelsIntoImageSurface(gl, surf);
ReadPixelsIntoDataSurface(gl, surf);
}
if (aPremultAlpha) {
@ -1359,8 +1359,7 @@ WebGLContext::GetSurfaceSnapshot(bool* aPremultAlpha)
if (aPremultAlpha) {
*aPremultAlpha = false;
} else {
gfxUtils::PremultiplyImageSurface(surf);
surf->MarkDirty();
gfxUtils::PremultiplyDataSurface(surf);
}
}
@ -1373,14 +1372,12 @@ WebGLContext::GetSurfaceSnapshot(bool* aPremultAlpha)
return nullptr;
}
RefPtr<SourceSurface> source = gfxPlatform::GetPlatform()->GetSourceSurfaceForSurface(dt, surf);
Matrix m;
m.Translate(0.0, mHeight);
m.Scale(1.0, -1.0);
dt->SetTransform(m);
dt->DrawSurface(source,
dt->DrawSurface(surf,
Rect(0, 0, mWidth, mHeight),
Rect(0, 0, mWidth, mHeight),
DrawSurfaceOptions(),