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Bug 877700: Limit the Source region to the area of the parent layer surface. r=roc

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This commit is contained in:
Bas Schouten 2013-07-29 10:35:48 +00:00
parent 7ae47f2c55
commit 198e36e48a
1 changed files with 6 additions and 5 deletions
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11
gfx/layers/d3d10/ContainerLayerD3D10.cpp
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@ -241,6 +241,8 @@ ContainerLayerD3D10::RenderLayer()
effect()->GetVariableByName("vRenderTargetOffset")->
GetRawValue(previousRenderTargetOffset, 0, 8);
previousViewportSize = mD3DManager->GetViewport();
if (mVisibleRegion.GetNumRects() != 1 || !(GetContentFlags() & CONTENT_OPAQUE)) {
const gfx3DMatrix& transform3D = GetEffectiveTransform();
gfxMatrix transform;
@ -256,10 +258,10 @@ ContainerLayerD3D10::RenderLayer()
// applied to use relative to our parent, and compensates for the offset
// that was applied on our parent's rendering.
D3D10_BOX srcBox;
srcBox.left = visibleRect.x + int32_t(transform.x0) - int32_t(previousRenderTargetOffset[0]);
srcBox.top = visibleRect.y + int32_t(transform.y0) - int32_t(previousRenderTargetOffset[1]);
srcBox.right = srcBox.left + visibleRect.width;
srcBox.bottom = srcBox.top + visibleRect.height;
srcBox.left = std::max<int32_t>(visibleRect.x + int32_t(transform.x0) - int32_t(previousRenderTargetOffset[0]), 0);
srcBox.top = std::max<int32_t>(visibleRect.y + int32_t(transform.y0) - int32_t(previousRenderTargetOffset[1]), 0);
srcBox.right = std::min<int32_t>(srcBox.left + visibleRect.width, previousViewportSize.width);
srcBox.bottom = std::min<int32_t>(srcBox.top + visibleRect.height, previousViewportSize.height);
srcBox.back = 1;
srcBox.front = 0;
@ -284,7 +286,6 @@ ContainerLayerD3D10::RenderLayer()
effect()->GetVariableByName("vRenderTargetOffset")->
SetRawValue(renderTargetOffset, 0, 8);
previousViewportSize = mD3DManager->GetViewport();
mD3DManager->SetViewport(nsIntSize(visibleRect.Size()));
}