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Prefer a texture pixel ref to a render target pixel ref when creating an SkGpuDevice

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Review URL: http://codereview.appspot.com/5570050/



git-svn-id: http://skia.googlecode.com/svn/trunk@3081 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
bsalomon@google.com 2012-01-24 02:31:42 +00:00
parent 18ed37a8a1
commit d9ce125ec8
1 changed files with 12 additions and 2 deletions
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12
src/gpu/SkGpuDevice.cpp
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@ -168,7 +168,17 @@ void SkGpuDevice::initFromRenderTarget(GrContext* context,
fTexture = fRenderTarget->asTexture();
SkSafeRef(fTexture);
SkGrRenderTargetPixelRef* pr = new SkGrRenderTargetPixelRef(fRenderTarget);
// Create a pixel ref for the underlying SkBitmap. We prefer a texture pixel
// ref to a render target pixel reft. The pixel ref may get ref'ed outside
// the device via accessBitmap. This external ref may outlive the device.
// Since textures own their render targets (but not vice-versa) we
// are ensuring that both objects will live as long as the pixel ref.
SkPixelRef* pr;
if (fTexture) {
pr = new SkGrTexturePixelRef(fTexture);
} else {
pr = new SkGrRenderTargetPixelRef(fRenderTarget);
}
this->setPixelRef(pr, 0)->unref();
}