| /* |
| * Copyright 2022 Google LLC |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "tests/Test.h" |
| |
| #include "include/core/SkCombinationBuilder.h" |
| #include "include/effects/SkRuntimeEffect.h" |
| #include "include/gpu/graphite/Context.h" |
| #include "src/core/SkShaderCodeDictionary.h" |
| #include "src/gpu/graphite/ContextPriv.h" |
| |
| using namespace skgpu::graphite; |
| |
| namespace { |
| |
| // combines two child blenders using 'blendFrac' |
| // 1 uniform ("blendFrac") |
| // 2 children ("a", "b") |
| // TODO: add a helper function |
| sk_sp<SkRuntimeEffect> get_combo_effect() { |
| SkRuntimeEffect::Result result = SkRuntimeEffect::MakeForBlender(SkString(R"( |
| uniform float blendFrac; |
| uniform blender a; |
| uniform blender b; |
| half4 main(half4 src, half4 dst) { |
| return (blendFrac * a.eval(src, dst)) + ((1 - blendFrac) * b.eval(src, dst)); |
| } |
| )")); |
| |
| return result.effect; |
| } |
| |
| // returns opaque red w/ the red value determined by 'redColor' |
| // 1 uniform ("redColor) |
| sk_sp<SkRuntimeEffect> get_red_effect() { |
| SkRuntimeEffect::Result result = SkRuntimeEffect::MakeForBlender(SkString(R"( |
| uniform float redColor; |
| half4 main(half4 src, half4 dst) { |
| return half4(redColor, 0, 0, 1); |
| } |
| )")); |
| |
| return result.effect; |
| } |
| |
| // returns opaque blue w/ the blue value determined by 'blueColor' |
| // 1 uniform ("blueColor) |
| sk_sp<SkRuntimeEffect> get_blue_effect() { |
| SkRuntimeEffect::Result result = SkRuntimeEffect::MakeForBlender(SkString(R"( |
| uniform float blueColor; |
| half4 main(half4 src, half4 dst) { |
| return half4(0, 0, blueColor, 1); |
| } |
| )")); |
| |
| return result.effect; |
| } |
| |
| static sk_sp<SkBlender> get_blender(sk_sp<SkRuntimeEffect> comboEffect, |
| sk_sp<SkRuntimeEffect> redEffect, |
| sk_sp<SkRuntimeEffect> blueEffect) { |
| sk_sp<SkBlender> redBlender; |
| { |
| SkRuntimeBlendBuilder builder(redEffect); |
| builder.uniform("redColor") = 1.0f; |
| redBlender = builder.makeBlender(); |
| } |
| |
| sk_sp<SkBlender> blueBlender; |
| { |
| SkRuntimeBlendBuilder builder(blueEffect); |
| builder.uniform("blueColor") = 1.0f; |
| blueBlender = builder.makeBlender(); |
| } |
| |
| sk_sp<SkBlender> linearBlender; |
| { |
| SkRuntimeBlendBuilder builder(comboEffect); |
| builder.uniform("blendFrac") = 0.5f; |
| builder.child("a") = redBlender; |
| builder.child("b") = blueBlender; |
| linearBlender = builder.makeBlender(); |
| } |
| |
| return linearBlender; |
| } |
| |
| } // anonymous namespace |
| |
| DEF_GRAPHITE_TEST_FOR_CONTEXTS(RTEffectTest, reporter, context) { |
| auto dict = context->priv().shaderCodeDictionary(); |
| |
| sk_sp<SkRuntimeEffect> comboEffect = get_combo_effect(); |
| sk_sp<SkRuntimeEffect> redEffect = get_red_effect(); |
| sk_sp<SkRuntimeEffect> blueEffect = get_blue_effect(); |
| |
| SkBlenderID comboId = context->addUserDefinedBlender(comboEffect); |
| SkASSERT(comboId.isValid()); |
| |
| SkBlenderID redId = context->addUserDefinedBlender(redEffect); |
| SkASSERT(redId.isValid()); |
| |
| SkBlenderID blueId = context->addUserDefinedBlender(blueEffect); |
| SkASSERT(blueId.isValid()); |
| |
| auto comboEntry = dict->getEntry(comboId); |
| REPORTER_ASSERT(reporter, comboEntry); |
| |
| auto redEntry = dict->getEntry(redId); |
| REPORTER_ASSERT(reporter, redEntry); |
| |
| auto blueEntry = dict->getEntry(blueId); |
| REPORTER_ASSERT(reporter, blueEntry); |
| |
| // TODO: |
| // add runtime effect shaders and color filters |
| // check that the shader snippet has the expected properties: uniforms, children, functions |
| |
| sk_sp<SkBlender> blender = get_blender(comboEffect, redEffect, blueEffect); |
| |
| // TODO: |
| // check that the uniforms can be extracted from 'blender' correctly |
| } |