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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 "GrGLRenderTarget.h"
#include "GrGLGpu.h"
#define GPUGL static_cast<GrGLGpu*>(this->getGpu())
#define GL_CALL(X) GR_GL_CALL(GPUGL->glInterface(), X)
// Because this class is virtually derived from GrSurface we must explicitly call its constructor.
GrGLRenderTarget::GrGLRenderTarget(GrGLGpu* gpu, const GrSurfaceDesc& desc, const IDDesc& idDesc)
: GrSurface(gpu, idDesc.fLifeCycle, desc)
, INHERITED(gpu, idDesc.fLifeCycle, desc, idDesc.fSampleConfig) {
this->init(desc, idDesc);
this->registerWithCache();
}
GrGLRenderTarget::GrGLRenderTarget(GrGLGpu* gpu, const GrSurfaceDesc& desc, const IDDesc& idDesc,
Derived)
: GrSurface(gpu, idDesc.fLifeCycle, desc)
, INHERITED(gpu, idDesc.fLifeCycle, desc, idDesc.fSampleConfig) {
this->init(desc, idDesc);
}
void GrGLRenderTarget::init(const GrSurfaceDesc& desc, const IDDesc& idDesc) {
fRTFBOID = idDesc.fRTFBOID;
fTexFBOID = idDesc.fTexFBOID;
fMSColorRenderbufferID = idDesc.fMSColorRenderbufferID;
fRTLifecycle = idDesc.fLifeCycle;
fViewport.fLeft = 0;
fViewport.fBottom = 0;
fViewport.fWidth = desc.fWidth;
fViewport.fHeight = desc.fHeight;
// We own one color value for each MSAA sample.
int colorValuesPerPixel = SkTMax(1, fDesc.fSampleCnt);
if (fTexFBOID != fRTFBOID) {
// If we own the resolve buffer then that is one more sample per pixel.
colorValuesPerPixel += 1;
} else if (fTexFBOID != 0) {
// For auto-resolving FBOs, the MSAA buffer is free.
colorValuesPerPixel = 1;
}
SkASSERT(kUnknown_GrPixelConfig != fDesc.fConfig);
SkASSERT(!GrPixelConfigIsCompressed(fDesc.fConfig));
size_t colorBytes = GrBytesPerPixel(fDesc.fConfig);
SkASSERT(colorBytes > 0);
fGpuMemorySize = colorValuesPerPixel * fDesc.fWidth * fDesc.fHeight * colorBytes;
SkASSERT(fGpuMemorySize <= WorseCaseSize(desc));
}
size_t GrGLRenderTarget::onGpuMemorySize() const {
return fGpuMemorySize;
}
void GrGLRenderTarget::onRelease() {
if (kBorrowed_LifeCycle != fRTLifecycle) {
if (fTexFBOID) {
GL_CALL(DeleteFramebuffers(1, &fTexFBOID));
}
if (fRTFBOID && fRTFBOID != fTexFBOID) {
GL_CALL(DeleteFramebuffers(1, &fRTFBOID));
}
if (fMSColorRenderbufferID) {
GL_CALL(DeleteRenderbuffers(1, &fMSColorRenderbufferID));
}
}
fRTFBOID = 0;
fTexFBOID = 0;
fMSColorRenderbufferID = 0;
INHERITED::onRelease();
}
void GrGLRenderTarget::onAbandon() {
fRTFBOID = 0;
fTexFBOID = 0;
fMSColorRenderbufferID = 0;
INHERITED::onAbandon();
}
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