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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "src/gpu/glsl/GrGLSLBlend.h"
#include "src/gpu/glsl/GrGLSLFragmentShaderBuilder.h"
#include "src/gpu/glsl/GrGLSLProgramBuilder.h"
namespace GrGLSLBlend {
const char* BlendFuncName(SkBlendMode mode) {
switch (mode) {
case SkBlendMode::kClear: return "blend_clear";
case SkBlendMode::kSrc: return "blend_src";
case SkBlendMode::kDst: return "blend_dst";
case SkBlendMode::kSrcOver: return "blend_src_over";
case SkBlendMode::kDstOver: return "blend_dst_over";
case SkBlendMode::kSrcIn: return "blend_src_in";
case SkBlendMode::kDstIn: return "blend_dst_in";
case SkBlendMode::kSrcOut: return "blend_src_out";
case SkBlendMode::kDstOut: return "blend_dst_out";
case SkBlendMode::kSrcATop: return "blend_src_atop";
case SkBlendMode::kDstATop: return "blend_dst_atop";
case SkBlendMode::kXor: return "blend_xor";
case SkBlendMode::kPlus: return "blend_plus";
case SkBlendMode::kModulate: return "blend_modulate";
case SkBlendMode::kScreen: return "blend_screen";
case SkBlendMode::kOverlay: return "blend_overlay";
case SkBlendMode::kDarken: return "blend_darken";
case SkBlendMode::kLighten: return "blend_lighten";
case SkBlendMode::kColorDodge: return "blend_color_dodge";
case SkBlendMode::kColorBurn: return "blend_color_burn";
case SkBlendMode::kHardLight: return "blend_hard_light";
case SkBlendMode::kSoftLight: return "blend_soft_light";
case SkBlendMode::kDifference: return "blend_difference";
case SkBlendMode::kExclusion: return "blend_exclusion";
case SkBlendMode::kMultiply: return "blend_multiply";
case SkBlendMode::kHue: return "blend_hue";
case SkBlendMode::kSaturation: return "blend_saturation";
case SkBlendMode::kColor: return "blend_color";
case SkBlendMode::kLuminosity: return "blend_luminosity";
}
SkUNREACHABLE;
}
void AppendMode(GrGLSLShaderBuilder* fsBuilder,
const char* srcColor,
const char* dstColor,
const char* outColor,
SkBlendMode mode) {
fsBuilder->codeAppendf("%s = %s(%s, %s);", outColor, BlendFuncName(mode), srcColor, dstColor);
}
} // namespace GrGLSLBlend