bbbf1a7f50
This does two things: 1) Moves responsibility for bit-packing portions of the key into the key itself. A new GrKeyBuilder type manages adding bits, with asserts to ensure a value always fits in the requested number. In theory this will let us generate smaller keys overall, at the expense of slightly more complex code during construction. 2) Adds a string label parameter for key methods that fold in data. For new methods, the label is required. To ease migration, the old add32 does not require a label (yet). This will let us generate detailed, human readable keys, either based on SK_DEBUG, or a runtime option (if we're comfortable paying the cost). Bug: skia:11372 Change-Id: Ib0f941551e0dbadabbd2a7de912b00e9e766b166 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/377876 Commit-Queue: Brian Osman <brianosman@google.com> Reviewed-by: Brian Salomon <bsalomon@google.com>
112 lines
4.1 KiB
C++
112 lines
4.1 KiB
C++
/*
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* Copyright 2018 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "include/utils/SkBase64.h"
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#include "src/core/SkMD5.h"
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#include "src/gpu/GrPersistentCacheUtils.h"
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#include "tools/gpu/MemoryCache.h"
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#if defined(SK_VULKAN)
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#include "src/gpu/vk/GrVkGpu.h"
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#endif
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// Change this to 1 to log cache hits/misses/stores using SkDebugf.
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#define LOG_MEMORY_CACHE 0
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static SkString data_to_str(const SkData& data) {
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size_t encodeLength = SkBase64::Encode(data.data(), data.size(), nullptr);
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SkString str;
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str.resize(encodeLength);
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SkBase64::Encode(data.data(), data.size(), str.writable_str());
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static constexpr size_t kMaxLength = 60;
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static constexpr char kTail[] = "...";
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static const size_t kTailLen = strlen(kTail);
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bool overlength = encodeLength > kMaxLength;
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if (overlength) {
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str = SkString(str.c_str(), kMaxLength - kTailLen);
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str.append(kTail);
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}
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return str;
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}
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namespace sk_gpu_test {
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sk_sp<SkData> MemoryCache::load(const SkData& key) {
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auto result = fMap.find(key);
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if (result == fMap.end()) {
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if (LOG_MEMORY_CACHE) {
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SkDebugf("Load Key: %s\n\tNot Found.\n\n", data_to_str(key).c_str());
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}
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++fCacheMissCnt;
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return nullptr;
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}
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if (LOG_MEMORY_CACHE) {
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SkDebugf("Load Key: %s\n\tFound Data: %s\n\n", data_to_str(key).c_str(),
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data_to_str(*result->second.fData).c_str());
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}
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result->second.fHitCount++;
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return result->second.fData;
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}
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void MemoryCache::store(const SkData& key, const SkData& data, const SkString& description) {
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if (LOG_MEMORY_CACHE) {
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SkDebugf("Store Key: %s\n\tData: %s\n\n", data_to_str(key).c_str(),
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data_to_str(data).c_str());
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}
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++fCacheStoreCnt;
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fMap[Key(key)] = Value(data, description);
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}
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void MemoryCache::writeShadersToDisk(const char* path, GrBackendApi api) {
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if (GrBackendApi::kOpenGL != api && GrBackendApi::kVulkan != api) {
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return;
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}
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for (auto it = fMap.begin(); it != fMap.end(); ++it) {
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SkMD5 hash;
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size_t bytesToHash = it->first.fKey->size();
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#if defined(SK_VULKAN)
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if (GrBackendApi::kVulkan == api) {
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// Vulkan stores two kinds of data in the cache (shaders and pipelines). The last four
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// bytes of the key identify which one we have. We only want to extract shaders.
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// Additionally, we don't want to hash the tag bytes, so we get the same keys as GL,
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// which is good for cross-checking code generation and performance.
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GrVkGpu::PersistentCacheKeyType vkKeyType;
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SkASSERT(bytesToHash >= sizeof(vkKeyType));
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bytesToHash -= sizeof(vkKeyType);
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memcpy(&vkKeyType, it->first.fKey->bytes() + bytesToHash, sizeof(vkKeyType));
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if (vkKeyType != GrVkGpu::kShader_PersistentCacheKeyType) {
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continue;
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}
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}
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#endif
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hash.write(it->first.fKey->bytes(), bytesToHash);
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SkMD5::Digest digest = hash.finish();
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SkString md5;
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for (int i = 0; i < 16; ++i) {
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md5.appendf("%02x", digest.data[i]);
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}
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SkSL::Program::Inputs inputsIgnored[kGrShaderTypeCount];
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SkSL::String shaders[kGrShaderTypeCount];
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const SkData* data = it->second.fData.get();
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// Even with the SPIR-V switches, it seems like we must use .spv, or malisc tries to
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// run glslang on the input.
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const char* ext = GrBackendApi::kOpenGL == api ? "frag" : "spv";
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SkReadBuffer reader(data->data(), data->size());
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GrPersistentCacheUtils::GetType(&reader); // Shader type tag
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GrPersistentCacheUtils::UnpackCachedShaders(&reader, shaders,
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inputsIgnored, kGrShaderTypeCount);
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SkString filename = SkStringPrintf("%s/%s.%s", path, md5.c_str(), ext);
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SkFILEWStream file(filename.c_str());
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file.write(shaders[kFragment_GrShaderType].c_str(), shaders[kFragment_GrShaderType].size());
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}
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}
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} // namespace sk_gpu_test
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