submodule/skia/src/core/SkPipelineData.cpp

   1 /*
   2  * Copyright 2022 Google LLC
   3  *
   4  * Use of this source code is governed by a BSD-style license that can be
   5  * found in the LICENSE file.
   6  */
   7
   8 #include "src/core/SkOpts.h"
   9 #include "src/core/SkPipelineData.h"
  10 #include "src/core/SkShaderCodeDictionary.h"
  11
  12 #ifdef SK_GRAPHITE_ENABLED
  13 SkPipelineDataGatherer::SkPipelineDataGatherer(skgpu::graphite::Layout layout)
  14         : fUniformManager(layout)
  15         , fSnippetRequirementFlags(SnippetRequirementFlags::kNone) {
  16 }
  17 #endif
  18
  19 void SkPipelineDataGatherer::reset() {
  20 #ifdef SK_GRAPHITE_ENABLED
  21     fTextureDataBlock.reset();
  22     fBlendInfo = BlendInfo();
  23     fUniformManager.reset();
  24 #endif
  25     fSnippetRequirementFlags = SnippetRequirementFlags::kNone;
  26 }
  27
  28 #ifdef SK_DEBUG
  29 void SkPipelineDataGatherer::checkReset() {
  30 #ifdef SK_GRAPHITE_ENABLED
  31     SkASSERT(fTextureDataBlock.empty());
  32     SkASSERT(fBlendInfo == BlendInfo());
  33     SkDEBUGCODE(fUniformManager.checkReset());
  34 #endif
  35     SkASSERT(fSnippetRequirementFlags == SnippetRequirementFlags::kNone);
  36 }
  37 #endif // SK_DEBUG
  38
  39 void SkPipelineDataGatherer::addFlags(SnippetRequirementFlags flags) {
  40     fSnippetRequirementFlags |= flags;
  41 }
  42
  43 bool SkPipelineDataGatherer::needsLocalCoords() const {
  44     return fSnippetRequirementFlags & SnippetRequirementFlags::kLocalCoords;
  45 }
  46
  47 ////////////////////////////////////////////////////////////////////////////////////////////////////
  48 SkUniformDataBlock* SkUniformDataBlock::Make(const SkUniformDataBlock& other,
  49                                              SkArenaAlloc* arena) {
  50     static constexpr size_t kUniformAlignment = alignof(void*);
  51     char* mem = static_cast<char*>(arena->makeBytesAlignedTo(other.size(), kUniformAlignment));
  52     memcpy(mem, other.data(), other.size());
  53
  54     return arena->make([&](void* ptr) {
  55         return new (ptr) SkUniformDataBlock(SkSpan<const char>(mem, other.size()));
  56     });
  57 }
  58
  59 uint32_t SkUniformDataBlock::hash() const {
  60     return SkOpts::hash_fn(fData.data(), fData.size(), 0);
  61 }
  62
  63 ////////////////////////////////////////////////////////////////////////////////////////////////////
  64 #ifdef SK_GRAPHITE_ENABLED
  65 static constexpr int kSkFilterModeCount = static_cast<int>(SkFilterMode::kLast) + 1;
  66
  67 std::unique_ptr<SkTextureDataBlock> SkTextureDataBlock::Make(const SkTextureDataBlock& other,
  68                                                              SkArenaAlloc* /* arena */) {
  69     return std::make_unique<SkTextureDataBlock>(other);
  70 }
  71
  72 bool SkTextureDataBlock::TextureInfo::operator==(const TextureInfo& other) const {
  73     return fProxy == other.fProxy &&
  74            fSamplingOptions == other.fSamplingOptions &&
  75            fTileModes[0] == other.fTileModes[0] &&
  76            fTileModes[1] == other.fTileModes[1];
  77 }
  78
  79 uint32_t SkTextureDataBlock::TextureInfo::samplerKey() const {
  80     static_assert(kSkTileModeCount <= 4 && kSkFilterModeCount <= 2);
  81     return (static_cast<int>(fTileModes[0])           << 0) |
  82            (static_cast<int>(fTileModes[1])           << 2) |
  83            (static_cast<int>(fSamplingOptions.filter) << 4) |
  84            (static_cast<int>(fSamplingOptions.mipmap) << 5);
  85 }
  86
  87 bool SkTextureDataBlock::operator==(const SkTextureDataBlock& other) const {
  88     if (fTextureData.size() != other.fTextureData.size()) {
  89         return false;
  90     }
  91
  92     for (size_t i = 0; i < fTextureData.size(); ++i) {
  93         if (fTextureData[i] != other.fTextureData[i]) {
  94             return false;
  95         }
  96     }
  97
  98     return true;
  99 }
 100
 101 uint32_t SkTextureDataBlock::hash() const {
 102     uint32_t hash = 0;
 103
 104     for (auto& d : fTextureData) {
 105         uint32_t samplerKey = d.samplerKey();
 106         hash = SkOpts::hash_fn(&samplerKey, sizeof(samplerKey), hash);
 107
 108         // Because the lifetime of the TextureDataCache is for just one Recording and the
 109         // TextureDataBlocks hold refs on their proxies, we can just use the proxy's pointer
 110         // for the hash here. This is a bit sloppy though in that it would be nice if proxies backed
 111         // by the same scratch texture hashed the same (it is tough to see how we could do that
 112         // at DrawPass creation time though).
 113         hash = SkOpts::hash_fn(d.fProxy.get(), sizeof(skgpu::graphite::TextureProxy*), hash);
 114     }
 115
 116     return hash;
 117 }
 118
 119 #endif