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Bug 634784 - Fix scaling being applied twice on component alpha surfaces. r=joe a=blocking2.0

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This commit is contained in:
Matt Woodrow 2011-02-18 11:47:04 +13:00
parent 6b366b61a3
commit cebc8097cd
1 changed files with 9 additions and 10 deletions
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19
gfx/layers/opengl/ThebesLayerOGL.cpp
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@ -379,11 +379,9 @@ BasicBufferOGL::GetQuadrantRectangle(XSide aXSide, YSide aYSide)
static void
FillSurface(gfxASurface* aSurface, const nsIntRegion& aRegion,
const nsIntPoint& aOffset, const gfxRGBA& aColor,
float aXRes, float aYRes)
const nsIntPoint& aOffset, const gfxRGBA& aColor)
{
nsRefPtr<gfxContext> ctx = new gfxContext(aSurface);
ctx->Scale(aXRes, aYRes);
ctx->Translate(-gfxPoint(aOffset.x, aOffset.y));
gfxUtils::ClipToRegion(ctx, aRegion);
ctx->SetColor(aColor);
@ -451,14 +449,15 @@ BasicBufferOGL::BeginPaint(ContentType aContentType,
return result;
nsIntRect visibleBounds = mLayer->GetVisibleRegion().GetBounds();
if (visibleBounds.width > gl()->GetMaxTextureSize() ||
visibleBounds.height > gl()->GetMaxTextureSize()) {
return result;
}
nsIntRect drawBounds = result.mRegionToDraw.GetBounds();
nsIntSize destBufferDims = ScaledSize(visibleBounds.Size(),
aXResolution, aYResolution);
if (destBufferDims.width > gl()->GetMaxTextureSize() ||
destBufferDims.height > gl()->GetMaxTextureSize()) {
return result;
}
nsRefPtr<TextureImage> destBuffer;
nsRefPtr<TextureImage> destBufferOnWhite;
nsIntRect destBufferRect;
@ -609,8 +608,8 @@ BasicBufferOGL::BeginPaint(ContentType aContentType,
gfxASurface *onWhite = mTexImageOnWhite->BeginUpdate(result.mRegionToDraw);
NS_ASSERTION(result.mRegionToDraw == drawRegionCopy,
"BeginUpdate should always modify the draw region in the same way!");
FillSurface(onBlack, result.mRegionToDraw, nsIntPoint(0,0), gfxRGBA(0.0, 0.0, 0.0, 1.0), aXResolution, aYResolution);
FillSurface(onWhite, result.mRegionToDraw, nsIntPoint(0,0), gfxRGBA(1.0, 1.0, 1.0, 1.0), aXResolution, aYResolution);
FillSurface(onBlack, result.mRegionToDraw, nsIntPoint(0,0), gfxRGBA(0.0, 0.0, 0.0, 1.0));
FillSurface(onWhite, result.mRegionToDraw, nsIntPoint(0,0), gfxRGBA(1.0, 1.0, 1.0, 1.0));
gfxASurface* surfaces[2] = { onBlack, onWhite };
nsRefPtr<gfxTeeSurface> surf = new gfxTeeSurface(surfaces, NS_ARRAY_LENGTH(surfaces));