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/SkKeyHelpers.h"
10 #include "src/core/SkReadBuffer.h"
11 #include "src/core/SkWriteBuffer.h"
12
13 #if SK_SUPPORT_GPU
14 #include "src/gpu/GrFragmentProcessor.h"
15 #include "src/gpu/effects/GrBlendFragmentProcessor.h"
16 #endif
17
Mode(SkBlendMode mode)18 sk_sp<SkBlender> SkBlender::Mode(SkBlendMode mode) {
19 #define RETURN_SINGLETON_BLENDER(m) \
20 case m: { \
21 static auto* sBlender = new SkBlendModeBlender{m}; \
22 return sk_ref_sp(sBlender); \
23 }
24
25 switch (mode) {
26 RETURN_SINGLETON_BLENDER(SkBlendMode::kClear)
27 RETURN_SINGLETON_BLENDER(SkBlendMode::kSrc)
28 RETURN_SINGLETON_BLENDER(SkBlendMode::kDst)
29 RETURN_SINGLETON_BLENDER(SkBlendMode::kSrcOver)
30 RETURN_SINGLETON_BLENDER(SkBlendMode::kDstOver)
31 RETURN_SINGLETON_BLENDER(SkBlendMode::kSrcIn)
32 RETURN_SINGLETON_BLENDER(SkBlendMode::kDstIn)
33 RETURN_SINGLETON_BLENDER(SkBlendMode::kSrcOut)
34 RETURN_SINGLETON_BLENDER(SkBlendMode::kDstOut)
35 RETURN_SINGLETON_BLENDER(SkBlendMode::kSrcATop)
36 RETURN_SINGLETON_BLENDER(SkBlendMode::kDstATop)
37 RETURN_SINGLETON_BLENDER(SkBlendMode::kXor)
38 RETURN_SINGLETON_BLENDER(SkBlendMode::kPlus)
39 RETURN_SINGLETON_BLENDER(SkBlendMode::kModulate)
40 RETURN_SINGLETON_BLENDER(SkBlendMode::kScreen)
41 RETURN_SINGLETON_BLENDER(SkBlendMode::kOverlay)
42 RETURN_SINGLETON_BLENDER(SkBlendMode::kDarken)
43 RETURN_SINGLETON_BLENDER(SkBlendMode::kLighten)
44 RETURN_SINGLETON_BLENDER(SkBlendMode::kColorDodge)
45 RETURN_SINGLETON_BLENDER(SkBlendMode::kColorBurn)
46 RETURN_SINGLETON_BLENDER(SkBlendMode::kHardLight)
47 RETURN_SINGLETON_BLENDER(SkBlendMode::kSoftLight)
48 RETURN_SINGLETON_BLENDER(SkBlendMode::kDifference)
49 RETURN_SINGLETON_BLENDER(SkBlendMode::kExclusion)
50 RETURN_SINGLETON_BLENDER(SkBlendMode::kMultiply)
51 RETURN_SINGLETON_BLENDER(SkBlendMode::kHue)
52 RETURN_SINGLETON_BLENDER(SkBlendMode::kSaturation)
53 RETURN_SINGLETON_BLENDER(SkBlendMode::kColor)
54 RETURN_SINGLETON_BLENDER(SkBlendMode::kLuminosity)
55 }
56
57 SkDEBUGFAILF("invalid blend mode %d", (int)mode);
58 return nullptr;
59
60 #undef RETURN_SINGLETON_BLENDER
61 }
62
addToKey(SkShaderCodeDictionary * dict,SkBackend backend,SkPaintParamsKeyBuilder * builder,SkUniformBlock * uniformBlock) const63 void SkBlenderBase::addToKey(SkShaderCodeDictionary* dict,
64 SkBackend backend,
65 SkPaintParamsKeyBuilder* builder,
66 SkUniformBlock* uniformBlock) const {
67
68 if (std::optional<SkBlendMode> bm = as_BB(this)->asBlendMode(); bm.has_value()) {
69 BlendModeBlock::AddToKey(dict, backend, builder, uniformBlock, bm.value());
70 } else {
71 BlendModeBlock::AddToKey(dict, backend, builder, uniformBlock, SkBlendMode::kSrcOver);
72 }
73 }
74
CreateProc(SkReadBuffer & buffer)75 sk_sp<SkFlattenable> SkBlendModeBlender::CreateProc(SkReadBuffer& buffer) {
76 SkBlendMode mode = buffer.read32LE(SkBlendMode::kLastMode);
77 return SkBlender::Mode(mode);
78 }
79
flatten(SkWriteBuffer & buffer) const80 void SkBlendModeBlender::flatten(SkWriteBuffer& buffer) const {
81 buffer.writeInt((int)fMode);
82 }
83
84 #if SK_SUPPORT_GPU
asFragmentProcessor(std::unique_ptr<GrFragmentProcessor> srcFP,std::unique_ptr<GrFragmentProcessor> dstFP,const GrFPArgs & fpArgs) const85 std::unique_ptr<GrFragmentProcessor> SkBlendModeBlender::asFragmentProcessor(
86 std::unique_ptr<GrFragmentProcessor> srcFP,
87 std::unique_ptr<GrFragmentProcessor> dstFP,
88 const GrFPArgs& fpArgs) const {
89 return GrBlendFragmentProcessor::Make(std::move(srcFP), std::move(dstFP), fMode);
90 }
91 #endif
92
onProgram(skvm::Builder * p,skvm::Color src,skvm::Color dst,const SkColorInfo & colorInfo,skvm::Uniforms * uniforms,SkArenaAlloc * alloc) const93 skvm::Color SkBlendModeBlender::onProgram(skvm::Builder* p, skvm::Color src, skvm::Color dst,
94 const SkColorInfo& colorInfo, skvm::Uniforms* uniforms,
95 SkArenaAlloc* alloc) const {
96 return p->blend(fMode, src, dst);
97 }
98