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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrVkResourceProvider.h"
#include "GrVkGpu.h"
#include "GrProcessor.h"
#include "GrVkPipelineState.h"
#include "GrVkPipelineStateBuilder.h"
#include "SkRTConf.h"
#include "glsl/GrGLSLFragmentProcessor.h"
#include "glsl/GrGLSLProgramDataManager.h"
#ifdef GR_PIPELINE_STATE_CACHE_STATS
SK_CONF_DECLARE(bool, c_DisplayVkPipelineCache, "gpu.displayyVkPipelineCache", false,
"Display pipeline state cache usage.");
#endif
struct GrVkResourceProvider::PipelineStateCache::Entry {
Entry() : fPipelineState(nullptr) {}
static const GrVkPipelineState::Desc& GetKey(const Entry* entry) {
return entry->fPipelineState->getDesc();
}
static uint32_t Hash(const GrVkPipelineState::Desc& key) {
return key.fChecksum;
}
sk_sp<GrVkPipelineState> fPipelineState;
private:
SK_DECLARE_INTERNAL_LLIST_INTERFACE(Entry);
};
GrVkResourceProvider::PipelineStateCache::PipelineStateCache(GrVkGpu* gpu)
: fCount(0)
, fGpu(gpu)
#ifdef GR_PIPELINE_STATE_CACHE_STATS
, fTotalRequests(0)
, fCacheMisses(0)
#endif
{}
GrVkResourceProvider::PipelineStateCache::~PipelineStateCache() {
SkASSERT(0 == fCount);
// dump stats
#ifdef GR_PIPELINE_STATE_CACHE_STATS
if (c_DisplayVkPipelineCache) {
SkDebugf("--- Pipeline State Cache ---\n");
SkDebugf("Total requests: %d\n", fTotalRequests);
SkDebugf("Cache misses: %d\n", fCacheMisses);
SkDebugf("Cache miss %%: %f\n", (fTotalRequests > 0) ?
100.f * fCacheMisses / fTotalRequests :
0.f);
SkDebugf("---------------------\n");
}
#endif
}
void GrVkResourceProvider::PipelineStateCache::reset() {
fHashTable.foreach([](Entry** entry) {
delete *entry;
});
fHashTable.reset();
fCount = 0;
}
void GrVkResourceProvider::PipelineStateCache::abandon() {
fHashTable.foreach([](Entry** entry) {
SkASSERT((*entry)->fPipelineState.get());
(*entry)->fPipelineState->abandonGPUResources();
});
this->reset();
}
void GrVkResourceProvider::PipelineStateCache::release() {
fHashTable.foreach([this](Entry** entry) {
SkASSERT((*entry)->fPipelineState.get());
(*entry)->fPipelineState->freeGPUResources(fGpu);
});
this->reset();
}
sk_sp<GrVkPipelineState> GrVkResourceProvider::PipelineStateCache::refPipelineState(
const GrPipeline& pipeline,
const GrPrimitiveProcessor& primProc,
GrPrimitiveType primitiveType,
const GrVkRenderPass& renderPass) {
#ifdef GR_PIPELINE_STATE_CACHE_STATS
++fTotalRequests;
#endif
// Get GrVkProgramDesc
GrVkPipelineState::Desc desc;
if (!GrVkProgramDescBuilder::Build(&desc.fProgramDesc,
primProc,
pipeline,
*fGpu->vkCaps().glslCaps())) {
GrCapsDebugf(fGpu->caps(), "Failed to build vk program descriptor!\n");
return nullptr;
}
// Get vulkan specific descriptor key
GrVkPipelineState::BuildStateKey(pipeline, primitiveType, &desc.fStateKey);
// Get checksum of entire PipelineDesc
int keyLength = desc.fStateKey.count();
SkASSERT(0 == (keyLength % 4));
// Seed the checksum with the checksum of the programDesc then add the vulkan key to it.
desc.fChecksum = SkChecksum::Murmur3(desc.fStateKey.begin(), keyLength,
desc.fProgramDesc.getChecksum());
Entry* entry = nullptr;
if (Entry** entryptr = fHashTable.find(desc)) {
SkASSERT(*entryptr);
entry = *entryptr;
}
if (!entry) {
#ifdef GR_PIPELINE_STATE_CACHE_STATS
++fCacheMisses;
#endif
sk_sp<GrVkPipelineState> pipelineState(
GrVkPipelineStateBuilder::CreatePipelineState(fGpu,
pipeline,
primProc,
primitiveType,
desc,
renderPass));
if (nullptr == pipelineState) {
return nullptr;
}
if (fCount < kMaxEntries) {
entry = new Entry;
fCount++;
} else {
SkASSERT(fCount == kMaxEntries);
entry = fLRUList.head();
fLRUList.remove(entry);
entry->fPipelineState->freeGPUResources(fGpu);
fHashTable.remove(entry->fPipelineState->getDesc());
}
entry->fPipelineState = std::move(pipelineState);
fHashTable.set(entry);
fLRUList.addToTail(entry);
return entry->fPipelineState;
} else {
fLRUList.remove(entry);
fLRUList.addToTail(entry);
}
return entry->fPipelineState;
}
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