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Lines 221-236
ThebesLayerD3D9::RenderThebesLayer(Readb
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| 221 |
} |
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} |
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nsTArray<ReadbackProcessor::Update> readbackUpdates; |
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nsTArray<ReadbackProcessor::Update> readbackUpdates; |
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nsIntRegion readbackRegion; |
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nsIntRegion readbackRegion; |
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if (aReadback && UsedForReadback()) { |
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if (aReadback && UsedForReadback()) { |
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aReadback->GetThebesLayerUpdates(this, &readbackUpdates, &readbackRegion); |
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aReadback->GetThebesLayerUpdates(this, &readbackUpdates, &readbackRegion); |
| 227 |
} |
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} |
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// Avoid artifacts when doing multipass rendering with a resampling transform, |
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// by ensuring we render the whole layer texture in one go instead of |
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// rectangle-by-rectangle. |
| 232 |
if (mode == SURFACE_COMPONENT_ALPHA) { |
| 233 |
const gfx3DMatrix& transform = GetEffectiveTransform(); |
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gfxMatrix transform2d; |
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if (!transform.Is2D(&transform2d) || |
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transform2d.HasNonIntegerTranslation()) { |
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mVisibleRegion = mTextureRect; |
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} |
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} |
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// Because updates to D3D9 ThebesLayers are rendered with the CPU, we don't |
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// Because updates to D3D9 ThebesLayers are rendered with the CPU, we don't |
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// have to do readback from D3D9 surfaces. Instead we make sure that any area |
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// have to do readback from D3D9 surfaces. Instead we make sure that any area |
| 231 |
// needed for readback is included in the drawRegion we ask layout to render. |
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// needed for readback is included in the drawRegion we ask layout to render. |
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// Then the readback areas we need can be copied out of the temporary |
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// Then the readback areas we need can be copied out of the temporary |
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// destinationSurface in DrawRegion. |
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// destinationSurface in DrawRegion. |
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nsIntRegion drawRegion; |
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nsIntRegion drawRegion; |
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drawRegion.Sub(mVisibleRegion, mValidRegion); |
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drawRegion.Sub(mVisibleRegion, mValidRegion); |
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drawRegion.Or(drawRegion, readbackRegion); |
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drawRegion.Or(drawRegion, readbackRegion); |