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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrTextureProvider.h"
#include "GrCaps.h"
#include "GrTexturePriv.h"
#include "GrResourceCache.h"
#include "GrGpu.h"
#include "../private/GrSingleOwner.h"
#include "SkMathPriv.h"
#include "SkTArray.h"
#include "SkTLazy.h"
const int GrTextureProvider::kMinScratchTextureSize = 16;
#define ASSERT_SINGLE_OWNER \
SkDEBUGCODE(GrSingleOwner::AutoEnforce debug_SingleOwner(fSingleOwner);)
GrTextureProvider::GrTextureProvider(GrGpu* gpu, GrResourceCache* cache, GrSingleOwner* singleOwner)
: fCache(cache)
, fGpu(gpu)
#ifdef SK_DEBUG
, fSingleOwner(singleOwner)
#endif
{
}
GrTexture* GrTextureProvider::createMipMappedTexture(const GrSurfaceDesc& desc, SkBudgeted budgeted,
const GrMipLevel* texels, int mipLevelCount) {
ASSERT_SINGLE_OWNER
if (this->isAbandoned()) {
return nullptr;
}
if (mipLevelCount && !texels) {
return nullptr;
}
for (int i = 0; i < mipLevelCount; ++i) {
if (!texels[i].fPixels) {
return nullptr;
}
}
if (mipLevelCount > 1 && GrPixelConfigIsSint(desc.fConfig)) {
return nullptr;
}
if ((desc.fFlags & kRenderTarget_GrSurfaceFlag) &&
!fGpu->caps()->isConfigRenderable(desc.fConfig, desc.fSampleCnt > 0)) {
return nullptr;
}
if (!GrPixelConfigIsCompressed(desc.fConfig)) {
if (mipLevelCount < 2) {
static const uint32_t kFlags = kExact_ScratchTextureFlag |
kNoCreate_ScratchTextureFlag;
if (GrTexture* texture = this->refScratchTexture(desc, kFlags)) {
if (!mipLevelCount ||
texture->writePixels(0, 0, desc.fWidth, desc.fHeight, desc.fConfig,
texels[0].fPixels, texels[0].fRowBytes)) {
if (SkBudgeted::kNo == budgeted) {
texture->resourcePriv().makeUnbudgeted();
}
return texture;
}
texture->unref();
}
}
}
SkTArray<GrMipLevel> texelsShallowCopy(mipLevelCount);
for (int i = 0; i < mipLevelCount; ++i) {
texelsShallowCopy.push_back(texels[i]);
}
return fGpu->createTexture(desc, budgeted, texelsShallowCopy);
}
GrTexture* GrTextureProvider::createTexture(const GrSurfaceDesc& desc, SkBudgeted budgeted,
const void* srcData, size_t rowBytes) {
GrMipLevel tempTexels;
GrMipLevel* texels = nullptr;
int levelCount = 0;
if (srcData) {
tempTexels.fPixels = srcData;
tempTexels.fRowBytes = rowBytes;
texels = &tempTexels;
levelCount = 1;
}
return this->createMipMappedTexture(desc, budgeted, texels, levelCount);
}
GrTexture* GrTextureProvider::createApproxTexture(const GrSurfaceDesc& desc) {
ASSERT_SINGLE_OWNER
return this->internalCreateApproxTexture(desc, 0);
}
GrTexture* GrTextureProvider::internalCreateApproxTexture(const GrSurfaceDesc& desc,
uint32_t scratchFlags) {
ASSERT_SINGLE_OWNER
if (this->isAbandoned()) {
return nullptr;
}
// Currently we don't recycle compressed textures as scratch.
if (GrPixelConfigIsCompressed(desc.fConfig)) {
return nullptr;
} else {
return this->refScratchTexture(desc, scratchFlags);
}
}
GrTexture* GrTextureProvider::refScratchTexture(const GrSurfaceDesc& inDesc,
uint32_t flags) {
ASSERT_SINGLE_OWNER
SkASSERT(!this->isAbandoned());
SkASSERT(!GrPixelConfigIsCompressed(inDesc.fConfig));
SkTCopyOnFirstWrite<GrSurfaceDesc> desc(inDesc);
if (fGpu->caps()->reuseScratchTextures() || (desc->fFlags & kRenderTarget_GrSurfaceFlag)) {
if (!(kExact_ScratchTextureFlag & flags)) {
// bin by pow2 with a reasonable min
GrSurfaceDesc* wdesc = desc.writable();
wdesc->fWidth = SkTMax(kMinScratchTextureSize, GrNextPow2(desc->fWidth));
wdesc->fHeight = SkTMax(kMinScratchTextureSize, GrNextPow2(desc->fHeight));
}
GrScratchKey key;
GrTexturePriv::ComputeScratchKey(*desc, &key);
uint32_t scratchFlags = 0;
if (kNoPendingIO_ScratchTextureFlag & flags) {
scratchFlags = GrResourceCache::kRequireNoPendingIO_ScratchFlag;
} else if (!(desc->fFlags & kRenderTarget_GrSurfaceFlag)) {
// If it is not a render target then it will most likely be populated by
// writePixels() which will trigger a flush if the texture has pending IO.
scratchFlags = GrResourceCache::kPreferNoPendingIO_ScratchFlag;
}
GrGpuResource* resource = fCache->findAndRefScratchResource(key,
GrSurface::WorstCaseSize(*desc),
scratchFlags);
if (resource) {
GrSurface* surface = static_cast<GrSurface*>(resource);
GrRenderTarget* rt = surface->asRenderTarget();
if (rt && fGpu->caps()->discardRenderTargetSupport()) {
rt->discard();
}
return surface->asTexture();
}
}
if (!(kNoCreate_ScratchTextureFlag & flags)) {
return fGpu->createTexture(*desc, SkBudgeted::kYes);
}
return nullptr;
}
sk_sp<GrTexture> GrTextureProvider::wrapBackendTexture(const GrBackendTextureDesc& desc,
GrWrapOwnership ownership) {
ASSERT_SINGLE_OWNER
if (this->isAbandoned()) {
return nullptr;
}
return fGpu->wrapBackendTexture(desc, ownership);
}
sk_sp<GrRenderTarget> GrTextureProvider::wrapBackendRenderTarget(
const GrBackendRenderTargetDesc& desc)
{
ASSERT_SINGLE_OWNER
return this->isAbandoned() ? nullptr
: fGpu->wrapBackendRenderTarget(desc, kBorrow_GrWrapOwnership);
}
void GrTextureProvider::assignUniqueKeyToResource(const GrUniqueKey& key, GrGpuResource* resource) {
ASSERT_SINGLE_OWNER
if (this->isAbandoned() || !resource) {
return;
}
resource->resourcePriv().setUniqueKey(key);
}
bool GrTextureProvider::existsResourceWithUniqueKey(const GrUniqueKey& key) const {
ASSERT_SINGLE_OWNER
return this->isAbandoned() ? false : fCache->hasUniqueKey(key);
}
GrGpuResource* GrTextureProvider::findAndRefResourceByUniqueKey(const GrUniqueKey& key) {
ASSERT_SINGLE_OWNER
return this->isAbandoned() ? nullptr : fCache->findAndRefUniqueResource(key);
}
GrTexture* GrTextureProvider::findAndRefTextureByUniqueKey(const GrUniqueKey& key) {
ASSERT_SINGLE_OWNER
GrGpuResource* resource = this->findAndRefResourceByUniqueKey(key);
if (resource) {
GrTexture* texture = static_cast<GrSurface*>(resource)->asTexture();
SkASSERT(texture);
return texture;
}
return NULL;
}
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