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Bug 807408 - Cache the temporary surface used when drawing ThebesLayers with BasicLayers. r=jrmuizel

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This commit is contained in:
Matt Woodrow
2012-11-07 11:39:35 +13:00
parent 45023fef8d
commit bfae0e49ea
1 changed files with 7 additions and 3 deletions
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10
gfx/layers/basic/BasicLayerManager.cpp
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@@ -537,9 +537,13 @@ BasicLayerManager::EndTransactionInternal(DrawThebesLayerCallback aCallback,
mTransactionIncomplete = false;
if (aFlags & END_NO_COMPOSITE) {
// TODO: We should really just set mTarget to null and make sure we can handle that further down the call chain
nsRefPtr<gfxASurface> surf = gfxPlatform::GetPlatform()->CreateOffscreenSurface(gfxIntSize(1, 1), gfxASurface::CONTENT_COLOR);
mTarget = new gfxContext(surf);
if (!mDummyTarget) {
// TODO: We should really just set mTarget to null and make sure we can handle that further down the call chain
// Creating this temporary surface can be expensive on some platforms (d2d in particular), so cache it between paints.
nsRefPtr<gfxASurface> surf = gfxPlatform::GetPlatform()->CreateOffscreenSurface(gfxIntSize(1, 1), gfxASurface::CONTENT_COLOR);
mDummyTarget = new gfxContext(surf);
}
mTarget = mDummyTarget;
}
if (mTarget && mRoot && !(aFlags & END_NO_IMMEDIATE_REDRAW)) {