1 /*
2 * Copyright 2021 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/SkBlendModeBlender.h"
9 #include "src/core/SkReadBuffer.h"
10 #include "src/core/SkWriteBuffer.h"
11
12 #if defined(SK_GANESH)
13 #include "src/gpu/ganesh/GrFragmentProcessor.h"
14 #include "src/gpu/ganesh/effects/GrBlendFragmentProcessor.h"
15 #endif
16
17 #if defined(SK_GRAPHITE)
18 #include "src/gpu/graphite/KeyHelpers.h"
19 #include "src/gpu/graphite/PaintParamsKey.h"
20 #endif
21
Mode(SkBlendMode mode)22 sk_sp<SkBlender> SkBlender::Mode(SkBlendMode mode) {
23 #define RETURN_SINGLETON_BLENDER(m) \
24 case m: { \
25 static auto* sBlender = new SkBlendModeBlender{m}; \
26 return sk_ref_sp(sBlender); \
27 }
28
29 switch (mode) {
30 RETURN_SINGLETON_BLENDER(SkBlendMode::kClear)
31 RETURN_SINGLETON_BLENDER(SkBlendMode::kSrc)
32 RETURN_SINGLETON_BLENDER(SkBlendMode::kDst)
33 RETURN_SINGLETON_BLENDER(SkBlendMode::kSrcOver)
34 RETURN_SINGLETON_BLENDER(SkBlendMode::kDstOver)
35 RETURN_SINGLETON_BLENDER(SkBlendMode::kSrcIn)
36 RETURN_SINGLETON_BLENDER(SkBlendMode::kDstIn)
37 RETURN_SINGLETON_BLENDER(SkBlendMode::kSrcOut)
38 RETURN_SINGLETON_BLENDER(SkBlendMode::kDstOut)
39 RETURN_SINGLETON_BLENDER(SkBlendMode::kSrcATop)
40 RETURN_SINGLETON_BLENDER(SkBlendMode::kDstATop)
41 RETURN_SINGLETON_BLENDER(SkBlendMode::kXor)
42 RETURN_SINGLETON_BLENDER(SkBlendMode::kPlus)
43 RETURN_SINGLETON_BLENDER(SkBlendMode::kModulate)
44 RETURN_SINGLETON_BLENDER(SkBlendMode::kScreen)
45 RETURN_SINGLETON_BLENDER(SkBlendMode::kOverlay)
46 RETURN_SINGLETON_BLENDER(SkBlendMode::kDarken)
47 RETURN_SINGLETON_BLENDER(SkBlendMode::kLighten)
48 RETURN_SINGLETON_BLENDER(SkBlendMode::kColorDodge)
49 RETURN_SINGLETON_BLENDER(SkBlendMode::kColorBurn)
50 RETURN_SINGLETON_BLENDER(SkBlendMode::kHardLight)
51 RETURN_SINGLETON_BLENDER(SkBlendMode::kSoftLight)
52 RETURN_SINGLETON_BLENDER(SkBlendMode::kDifference)
53 RETURN_SINGLETON_BLENDER(SkBlendMode::kExclusion)
54 RETURN_SINGLETON_BLENDER(SkBlendMode::kMultiply)
55 RETURN_SINGLETON_BLENDER(SkBlendMode::kHue)
56 RETURN_SINGLETON_BLENDER(SkBlendMode::kSaturation)
57 RETURN_SINGLETON_BLENDER(SkBlendMode::kColor)
58 RETURN_SINGLETON_BLENDER(SkBlendMode::kLuminosity)
59 }
60
61 SkDEBUGFAILF("invalid blend mode %d", (int)mode);
62 return nullptr;
63
64 #undef RETURN_SINGLETON_BLENDER
65 }
66
67 #if defined(SK_GRAPHITE)
addToKey(const skgpu::graphite::KeyContext & keyContext,skgpu::graphite::PaintParamsKeyBuilder * builder,skgpu::graphite::PipelineDataGatherer * gatherer,bool primitiveColorBlender) const68 void SkBlenderBase::addToKey(const skgpu::graphite::KeyContext& keyContext,
69 skgpu::graphite::PaintParamsKeyBuilder* builder,
70 skgpu::graphite::PipelineDataGatherer* gatherer,
71 bool primitiveColorBlender) const {
72 using namespace skgpu::graphite;
73
74 std::optional<SkBlendMode> bm = as_BB(this)->asBlendMode();
75 if (primitiveColorBlender && bm.has_value()) {
76 PrimitiveBlendModeBlock::BeginBlock(keyContext, builder, gatherer, bm.value());
77 builder->endBlock();
78 } else if (!primitiveColorBlender) {
79 BlendModeBlock::BeginBlock(keyContext, builder, gatherer,
80 bm.value_or(SkBlendMode::kSrcOver));
81 builder->endBlock();
82 }
83 }
84 #endif
85
CreateProc(SkReadBuffer & buffer)86 sk_sp<SkFlattenable> SkBlendModeBlender::CreateProc(SkReadBuffer& buffer) {
87 SkBlendMode mode = buffer.read32LE(SkBlendMode::kLastMode);
88 return SkBlender::Mode(mode);
89 }
90
flatten(SkWriteBuffer & buffer) const91 void SkBlendModeBlender::flatten(SkWriteBuffer& buffer) const {
92 buffer.writeInt((int)fMode);
93 }
94
95 #if defined(SK_GANESH)
asFragmentProcessor(std::unique_ptr<GrFragmentProcessor> srcFP,std::unique_ptr<GrFragmentProcessor> dstFP,const GrFPArgs & fpArgs) const96 std::unique_ptr<GrFragmentProcessor> SkBlendModeBlender::asFragmentProcessor(
97 std::unique_ptr<GrFragmentProcessor> srcFP,
98 std::unique_ptr<GrFragmentProcessor> dstFP,
99 const GrFPArgs& fpArgs) const {
100 return GrBlendFragmentProcessor::Make(std::move(srcFP), std::move(dstFP), fMode);
101 }
102 #endif
103
onProgram(skvm::Builder * p,skvm::Color src,skvm::Color dst,const SkColorInfo & colorInfo,skvm::Uniforms * uniforms,SkArenaAlloc * alloc) const104 skvm::Color SkBlendModeBlender::onProgram(skvm::Builder* p, skvm::Color src, skvm::Color dst,
105 const SkColorInfo& colorInfo, skvm::Uniforms* uniforms,
106 SkArenaAlloc* alloc) const {
107 return p->blend(fMode, src, dst);
108 }
109