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Bug 913999 - DrawWindow() - Remove hard-coded 1.0f in DrawOptions and only use Azure if alpha is not needed. r=mattwoodrow

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This commit is contained in:
Walter Litwinczyk 2014-07-02 10:27:25 -07:00
parent 94679ac4ab
commit b74634d801
1 changed files with 6 additions and 2 deletions
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8
content/canvas/src/CanvasRenderingContext2D.cpp
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@ -3660,7 +3660,11 @@ CanvasRenderingContext2D::DrawWindow(nsGlobalWindow& window, double x,
}
nsRefPtr<gfxContext> thebes;
RefPtr<DrawTarget> drawDT;
if (gfxPlatform::GetPlatform()->SupportsAzureContentForDrawTarget(mTarget)) {
// Rendering directly is faster and can be done if mTarget supports Azure
// and does not need alpha blending.
if (gfxPlatform::GetPlatform()->SupportsAzureContentForDrawTarget(mTarget) &&
GlobalAlpha() == 1.0f)
{
thebes = new gfxContext(mTarget);
thebes->SetMatrix(gfxMatrix(matrix._11, matrix._12, matrix._21,
matrix._22, matrix._31, matrix._32));
@ -3698,7 +3702,7 @@ CanvasRenderingContext2D::DrawWindow(nsGlobalWindow& window, double x,
mgfx::Rect sourceRect(0, 0, sw, sh);
mTarget->DrawSurface(source, destRect, sourceRect,
DrawSurfaceOptions(mgfx::Filter::POINT),
DrawOptions(1.0f, CompositionOp::OP_OVER,
DrawOptions(GlobalAlpha(), CompositionOp::OP_OVER,
AntialiasMode::NONE));
mTarget->Flush();
} else {