| /* |
| * Copyright 2021 Google LLC |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "src/core/SkBlendModeBlender.h" |
| #include "src/core/SkReadBuffer.h" |
| #include "src/core/SkWriteBuffer.h" |
| |
| #if SK_SUPPORT_GPU |
| #include "src/gpu/GrFragmentProcessor.h" |
| #endif |
| |
| sk_sp<SkBlender> SkBlenders::Mode(SkBlendMode mode) { |
| #define RETURN_SINGLETON_BLENDER(m) \ |
| case m: { \ |
| static auto* sBlender = new SkBlendModeBlender{m}; \ |
| return sk_ref_sp(sBlender); \ |
| } |
| |
| switch (mode) { |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kClear) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kSrc) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kDst) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kSrcOver) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kDstOver) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kSrcIn) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kDstIn) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kSrcOut) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kDstOut) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kSrcATop) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kDstATop) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kXor) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kPlus) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kModulate) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kScreen) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kOverlay) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kDarken) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kLighten) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kColorDodge) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kColorBurn) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kHardLight) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kSoftLight) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kDifference) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kExclusion) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kMultiply) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kHue) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kSaturation) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kColor) |
| RETURN_SINGLETON_BLENDER(SkBlendMode::kLuminosity) |
| } |
| |
| SkDEBUGFAILF("invalid blend mode %d", (int)mode); |
| return nullptr; |
| |
| #undef RETURN_SINGLETON_BLENDER |
| } |
| |
| sk_sp<SkFlattenable> SkBlendModeBlender::CreateProc(SkReadBuffer& buffer) { |
| SkBlendMode mode = buffer.read32LE(SkBlendMode::kLastMode); |
| return SkBlenders::Mode(mode); |
| } |
| |
| void SkBlendModeBlender::flatten(SkWriteBuffer& buffer) const { |
| buffer.writeInt((int)fMode); |
| } |
| |
| #if SK_SUPPORT_GPU |
| std::unique_ptr<GrFragmentProcessor> SkBlendModeBlender::asFragmentProcessor( |
| std::unique_ptr<GrFragmentProcessor> inputFP, const GrFPArgs& fpArgs) const { |
| // Using a SkBlendModeBlender on the GPU side isn't supported; we should use GrXferProcessor to |
| // perform this blend instead. The Xfer processor is able to perform coefficient-based blends |
| // without readback, so it's more efficient. |
| SkDEBUGFAIL("SkBlendModeBlender::asFragmentProcessor is not supported"); |
| return nullptr; |
| } |
| #endif |
| |
| skvm::Color SkBlendModeBlender::onProgram(skvm::Builder* p, skvm::Color src, skvm::Color dst, |
| const SkColorInfo& colorInfo, skvm::Uniforms* uniforms, |
| SkArenaAlloc* alloc) const { |
| return p->blend(fMode, src, dst); |
| } |