本文整理汇总了C++中GrPipelineBuilder::willXPNeedDstCopy方法的典型用法代码示例。如果您正苦于以下问题：C++ GrPipelineBuilder::willXPNeedDstCopy方法的具体用法？C++ GrPipelineBuilder::willXPNeedDstCopy怎么用？C++ GrPipelineBuilder::willXPNeedDstCopy使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类GrPipelineBuilder的用法示例。
在下文中一共展示了GrPipelineBuilder::willXPNeedDstCopy方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: setupDstReadIfNecessary
bool GrDrawTarget::setupDstReadIfNecessary(const GrPipelineBuilder& pipelineBuilder,
const GrProcOptInfo& colorPOI,
const GrProcOptInfo& coveragePOI,
GrDeviceCoordTexture* dstCopy,
const SkRect* drawBounds) {
if (!pipelineBuilder.willXPNeedDstCopy(*this->caps(), colorPOI, coveragePOI)) {
return true;
}
SkIRect copyRect;
GrRenderTarget* rt = pipelineBuilder.getRenderTarget();
pipelineBuilder.clip().getConservativeBounds(rt, ©Rect);
if (drawBounds) {
SkIRect drawIBounds;
drawBounds->roundOut(&drawIBounds);
if (!copyRect.intersect(drawIBounds)) {
#ifdef SK_DEBUG
SkDebugf("Missed an early reject. Bailing on draw from setupDstReadIfNecessary.\n");
#endif
return false;
}
} else {
#ifdef SK_DEBUG
//SkDebugf("No dev bounds when dst copy is made.\n");
#endif
}
// MSAA consideration: When there is support for reading MSAA samples in the shader we could
// have per-sample dst values by making the copy multisampled.
GrSurfaceDesc desc;
this->initCopySurfaceDstDesc(rt, &desc);
desc.fWidth = copyRect.width();
desc.fHeight = copyRect.height();
SkAutoTUnref<GrTexture> copy(
fContext->refScratchTexture(desc, GrContext::kApprox_ScratchTexMatch));
if (!copy) {
SkDebugf("Failed to create temporary copy of destination texture.\n");
return false;
}
SkIPoint dstPoint = {0, 0};
if (this->copySurface(copy, rt, copyRect, dstPoint)) {
dstCopy->setTexture(copy);
dstCopy->setOffset(copyRect.fLeft, copyRect.fTop);
return true;
} else {
return false;
}
}