AuroraMiddleware/skia2
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Instead of turning clipping off during AA, clip to the offscreen tile when

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we're writing to it, then restore the onscreen clip when copying it back
to screen. Speeds up rendering of web pages with paths >> tile size.



git-svn-id: http://skia.googlecode.com/svn/trunk@1899 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
tomhudson@google.com 2011-07-19 15:44:00 +00:00
parent 2ba30c0182
commit 237a461ec9
1 changed files with 5 additions and 3 deletions
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8
gpu/src/GrContext.cpp
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@ -545,6 +545,7 @@ struct GrContext::OffscreenRecord {
GrTextureEntry* fEntry0;
GrTextureEntry* fEntry1;
GrDrawTarget::SavedDrawState fSavedState;
GrClip fClip;
};
bool GrContext::doOffscreenAA(GrDrawTarget* target,
@ -658,6 +659,8 @@ bool GrContext::prepareForOffscreenAA(GrDrawTarget* target,
record->fTileCountX = GrIDivRoundUp(boundW, record->fTileSizeX);
record->fTileCountY = GrIDivRoundUp(boundH, record->fTileSizeY);
record->fClip = target->getClip();
target->saveCurrentDrawState(&record->fSavedState);
return true;
}
@ -684,15 +687,13 @@ void GrContext::setupOffscreenAAPass1(GrDrawTarget* target,
scaleM.setScale(record->fScale * GR_Scalar1, record->fScale * GR_Scalar1);
target->postConcatViewMatrix(scaleM);
// clip gets applied in second pass
target->disableState(GrDrawTarget::kClip_StateBit);
int w = (tileX == record->fTileCountX-1) ? boundRect.fRight - left :
record->fTileSizeX;
int h = (tileY == record->fTileCountY-1) ? boundRect.fBottom - top :
record->fTileSizeY;
GrIRect clear = SkIRect::MakeWH(record->fScale * w,
record->fScale * h);
target->setClip(GrClip(clear));
#if 0
// visualize tile boundaries by setting edges of offscreen to white
// and interior to tranparent. black.
@ -779,6 +780,7 @@ void GrContext::doOffscreenAAPass2(GrDrawTarget* target,
int stageMask = paint.getActiveStageMask();
target->restoreDrawState(record->fSavedState);
target->setClip(record->fClip);
if (stageMask) {
GrMatrix invVM;