blob: 87d9e9cb0e486a08998c6650d403a4dff5495490 [file] [log] [blame]
/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "include/gpu/GrContext.h"
#include "include/gpu/GrRenderTarget.h"
#include "include/gpu/GrSurface.h"
#include "include/gpu/GrTexture.h"
#include "src/gpu/GrOpList.h"
#include "src/gpu/GrResourceProvider.h"
#include "src/gpu/GrSurfacePriv.h"
#include "src/core/SkMathPriv.h"
#include "src/gpu/SkGr.h"
size_t GrSurface::WorstCaseSize(const GrSurfaceDesc& desc, bool binSize) {
size_t size;
int width = binSize ? GrResourceProvider::MakeApprox(desc.fWidth) : desc.fWidth;
int height = binSize ? GrResourceProvider::MakeApprox(desc.fHeight) : desc.fHeight;
bool isRenderTarget = SkToBool(desc.fFlags & kRenderTarget_GrSurfaceFlag);
if (isRenderTarget) {
// We own one color value for each MSAA sample.
SkASSERT(desc.fSampleCnt >= 1);
int colorValuesPerPixel = desc.fSampleCnt;
if (desc.fSampleCnt > 1) {
// Worse case, we own the resolve buffer so that is one more sample per pixel.
colorValuesPerPixel += 1;
}
SkASSERT(kUnknown_GrPixelConfig != desc.fConfig);
SkASSERT(!GrPixelConfigIsCompressed(desc.fConfig));
size_t colorBytes = (size_t) width * height * GrBytesPerPixel(desc.fConfig);
// This would be a nice assert to have (i.e., we aren't creating 0 width/height surfaces).
// Unfortunately Chromium seems to want to do this.
//SkASSERT(colorBytes > 0);
size = colorValuesPerPixel * colorBytes;
size += colorBytes/3; // in case we have to mipmap
} else {
if (GrPixelConfigIsCompressed(desc.fConfig)) {
size = GrCompressedFormatDataSize(desc.fConfig, width, height);
} else {
size = (size_t)width * height * GrBytesPerPixel(desc.fConfig);
}
size += size/3; // in case we have to mipmap
}
return size;
}
size_t GrSurface::ComputeSize(GrPixelConfig config,
int width,
int height,
int colorSamplesPerPixel,
GrMipMapped mipMapped,
bool binSize) {
size_t colorSize;
width = binSize ? GrResourceProvider::MakeApprox(width) : width;
height = binSize ? GrResourceProvider::MakeApprox(height) : height;
SkASSERT(kUnknown_GrPixelConfig != config);
if (GrPixelConfigIsCompressed(config)) {
colorSize = GrCompressedFormatDataSize(config, width, height);
} else {
colorSize = (size_t)width * height * GrBytesPerPixel(config);
}
SkASSERT(colorSize > 0);
size_t finalSize = colorSamplesPerPixel * colorSize;
if (GrMipMapped::kYes == mipMapped) {
// We don't have to worry about the mipmaps being a different size than
// we'd expect because we never change fDesc.fWidth/fHeight.
finalSize += colorSize/3;
}
return finalSize;
}
//////////////////////////////////////////////////////////////////////////////
bool GrSurface::hasPendingRead() const {
const GrTexture* thisTex = this->asTexture();
if (thisTex && thisTex->internalHasPendingRead()) {
return true;
}
const GrRenderTarget* thisRT = this->asRenderTarget();
if (thisRT && thisRT->internalHasPendingRead()) {
return true;
}
return false;
}
bool GrSurface::hasPendingWrite() const {
const GrTexture* thisTex = this->asTexture();
if (thisTex && thisTex->internalHasPendingWrite()) {
return true;
}
const GrRenderTarget* thisRT = this->asRenderTarget();
if (thisRT && thisRT->internalHasPendingWrite()) {
return true;
}
return false;
}
bool GrSurface::hasPendingIO() const {
const GrTexture* thisTex = this->asTexture();
if (thisTex && thisTex->internalHasPendingIO()) {
return true;
}
const GrRenderTarget* thisRT = this->asRenderTarget();
if (thisRT && thisRT->internalHasPendingIO()) {
return true;
}
return false;
}
void GrSurface::onRelease() {
this->invokeReleaseProc();
this->INHERITED::onRelease();
}
void GrSurface::onAbandon() {
this->invokeReleaseProc();
this->INHERITED::onAbandon();
}