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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 "GrContext.h"
#include "GrGLTexture.h"
#include "GrGLGpu.h"
#include "GrShaderCaps.h"
#include "SkMakeUnique.h"
#include "SkTraceMemoryDump.h"
#define GPUGL static_cast<GrGLGpu*>(this->getGpu())
#define GL_CALL(X) GR_GL_CALL(GPUGL->glInterface(), X)
static inline GrSLType sampler_type(const GrGLTexture::IDDesc& idDesc, GrPixelConfig config,
const GrGLGpu* gpu) {
if (idDesc.fInfo.fTarget == GR_GL_TEXTURE_EXTERNAL) {
SkASSERT(gpu->caps()->shaderCaps()->externalTextureSupport());
SkASSERT(!GrPixelConfigIsSint(config));
return kTextureExternalSampler_GrSLType;
} else if (idDesc.fInfo.fTarget == GR_GL_TEXTURE_RECTANGLE) {
SkASSERT(gpu->glCaps().rectangleTextureSupport());
SkASSERT(!GrPixelConfigIsSint(config));
return kTexture2DRectSampler_GrSLType;
} else if (GrPixelConfigIsSint(config)) {
return kITexture2DSampler_GrSLType;
} else {
SkASSERT(idDesc.fInfo.fTarget == GR_GL_TEXTURE_2D);
return kTexture2DSampler_GrSLType;
}
}
static inline GrSamplerParams::FilterMode highest_filter_mode(const GrGLTexture::IDDesc& idDesc,
GrPixelConfig config) {
if (GrPixelConfigIsSint(config)) {
// Integer textures in GL can use GL_NEAREST_MIPMAP_NEAREST. This is a mode we don't support
// and don't currently have a use for.
return GrSamplerParams::kNone_FilterMode;
}
if (idDesc.fInfo.fTarget == GR_GL_TEXTURE_RECTANGLE ||
idDesc.fInfo.fTarget == GR_GL_TEXTURE_EXTERNAL) {
return GrSamplerParams::kBilerp_FilterMode;
}
return GrSamplerParams::kMipMap_FilterMode;
}
// Because this class is virtually derived from GrSurface we must explicitly call its constructor.
GrGLTexture::GrGLTexture(GrGLGpu* gpu, SkBudgeted budgeted, const GrSurfaceDesc& desc,
const IDDesc& idDesc)
: GrSurface(gpu, desc)
, INHERITED(gpu, desc, sampler_type(idDesc, desc.fConfig, gpu),
highest_filter_mode(idDesc, desc.fConfig), false) {
this->init(desc, idDesc);
this->registerWithCache(budgeted);
}
GrGLTexture::GrGLTexture(GrGLGpu* gpu, SkBudgeted budgeted, const GrSurfaceDesc& desc,
const IDDesc& idDesc,
bool wasMipMapDataProvided)
: GrSurface(gpu, desc)
, INHERITED(gpu, desc, sampler_type(idDesc, desc.fConfig, gpu),
highest_filter_mode(idDesc, desc.fConfig),
wasMipMapDataProvided) {
this->init(desc, idDesc);
this->registerWithCache(budgeted);
}
GrGLTexture::GrGLTexture(GrGLGpu* gpu, Wrapped, const GrSurfaceDesc& desc, const IDDesc& idDesc)
: GrSurface(gpu, desc)
, INHERITED(gpu, desc, sampler_type(idDesc, desc.fConfig, gpu),
highest_filter_mode(idDesc, desc.fConfig), false) {
this->init(desc, idDesc);
this->registerWithCacheWrapped();
}
GrGLTexture::GrGLTexture(GrGLGpu* gpu, const GrSurfaceDesc& desc, const IDDesc& idDesc,
bool wasMipMapDataProvided)
: GrSurface(gpu, desc)
, INHERITED(gpu, desc, sampler_type(idDesc, desc.fConfig, gpu),
highest_filter_mode(idDesc, desc.fConfig),
wasMipMapDataProvided) {
this->init(desc, idDesc);
}
void GrGLTexture::init(const GrSurfaceDesc& desc, const IDDesc& idDesc) {
SkASSERT(0 != idDesc.fInfo.fID);
fTexParams.invalidate();
fTexParamsTimestamp = GrGpu::kExpiredTimestamp;
fInfo = idDesc.fInfo;
fTextureIDOwnership = idDesc.fOwnership;
}
void GrGLTexture::onRelease() {
if (fInfo.fID) {
if (GrBackendObjectOwnership::kBorrowed != fTextureIDOwnership) {
GL_CALL(DeleteTextures(1, &fInfo.fID));
}
fInfo.fID = 0;
}
INHERITED::onRelease();
}
void GrGLTexture::onAbandon() {
fInfo.fTarget = 0;
fInfo.fID = 0;
INHERITED::onAbandon();
}
GrBackendObject GrGLTexture::getTextureHandle() const {
return reinterpret_cast<GrBackendObject>(&fInfo);
}
std::unique_ptr<GrExternalTextureData> GrGLTexture::detachBackendTexture() {
// Flush any pending writes to this texture, as well GL itself
GrFence fence = this->getContext()->prepareSurfaceForExternalIOAndFlush(this);
// Make a copy of our GL-specific information
auto data = skstd::make_unique<GrGLExternalTextureData>(fInfo, fence);
// Ensure the cache can't reach this texture anymore
this->detachFromCache();
// Detach from the GL object, so we don't use it (or try to delete it when we're freed)
fInfo.fTarget = 0;
fInfo.fID = 0;
return std::move(data);
}
void GrGLTexture::setMemoryBacking(SkTraceMemoryDump* traceMemoryDump,
const SkString& dumpName) const {
SkString texture_id;
texture_id.appendU32(this->textureID());
traceMemoryDump->setMemoryBacking(dumpName.c_str(), "gl_texture",
texture_id.c_str());
}
sk_sp<GrGLTexture> GrGLTexture::MakeWrapped(GrGLGpu* gpu, const GrSurfaceDesc& desc,
const IDDesc& idDesc) {
return sk_sp<GrGLTexture>(new GrGLTexture(gpu, kWrapped, desc, idDesc));
}
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