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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrRenderTarget.h"
#include "GrContext.h"
#include "GrGpu.h"
#include "GrStencilBuffer.h"
bool GrRenderTarget::readPixels(int left, int top, int width, int height,
GrPixelConfig config, void* buffer) {
// go through context so that all necessary flushing occurs
GrContext* context = this->getGpu()->getContext();
GrAssert(NULL != context);
return context->readRenderTargetPixels(this,
left, top,
width, height,
config, buffer);
}
size_t GrRenderTarget::sizeInBytes() const {
int colorBits;
if (kUnknown_GrPixelConfig == fConfig) {
colorBits = 32; // don't know, make a guess
} else {
colorBits = GrBytesPerPixel(fConfig);
}
uint64_t size = fAllocatedWidth;
size *= fAllocatedHeight;
size *= colorBits;
size *= GrMax(1,fSampleCnt);
return (size_t)(size / 8);
}
void GrRenderTarget::flagAsNeedingResolve(const GrIRect* rect) {
if (kCanResolve_ResolveType == getResolveType()) {
if (NULL != rect) {
fResolveRect.join(*rect);
if (!fResolveRect.intersect(0, 0, this->width(), this->height())) {
fResolveRect.setEmpty();
}
} else {
fResolveRect.setLTRB(0, 0, this->width(), this->height());
}
}
}
void GrRenderTarget::overrideResolveRect(const GrIRect rect) {
fResolveRect = rect;
if (fResolveRect.isEmpty()) {
fResolveRect.setLargestInverted();
} else {
if (!fResolveRect.intersect(0, 0, this->width(), this->height())) {
fResolveRect.setLargestInverted();
}
}
}
void GrRenderTarget::setStencilBuffer(GrStencilBuffer* stencilBuffer) {
if (NULL != fStencilBuffer) {
fStencilBuffer->wasDetachedFromRenderTarget(this);
fStencilBuffer->unref();
}
fStencilBuffer = stencilBuffer;
if (NULL != fStencilBuffer) {
fStencilBuffer->wasAttachedToRenderTarget(this);
fStencilBuffer->ref();
}
}
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