xref: /aosp_15_r20/external/skia/tools/RuntimeBlendUtils.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
1 /*
2  * Copyright 2021 Google Inc.
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 #include "tools/RuntimeBlendUtils.h"
8 
9 #include "include/core/SkBlendMode.h"
10 #include "include/core/SkRefCnt.h"
11 #include "include/effects/SkRuntimeEffect.h"
12 
GetRuntimeBlendForBlendMode(SkBlendMode mode)13 sk_sp<SkBlender> GetRuntimeBlendForBlendMode(SkBlendMode mode) {
14     static auto result = SkRuntimeEffect::MakeForBlender(SkString(
15         "uniform blender b;"
16         "half4 main(half4 src, half4 dst) {"
17             "return b.eval(src, dst);"
18         "}"
19     ));
20 
21     SkASSERTF(result.effect, "%s", result.errorText.c_str());
22 
23     SkRuntimeBlendBuilder builder(result.effect);
24     builder.child("b") = SkBlender::Mode(mode);
25     return builder.makeBlender();
26 }
27