126788e087
Now that we support sampling from an SkBlender inside a Runtime Effect, we can leverage that to reuse the blends from SkBlender::Mode. This lets us avoid hard-coding copies of every built-in blend function. Change-Id: I51f380490611fbde943c16648999b4fd4e6a14a9 Bug: skia:12257, skia:12085 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/434472 Commit-Queue: John Stiles <johnstiles@google.com> Reviewed-by: Brian Osman <brianosman@google.com>
26 lines
727 B
C++
26 lines
727 B
C++
/*
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* Copyright 2021 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "include/core/SkBlendMode.h"
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#include "include/core/SkRefCnt.h"
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#include "include/effects/SkRuntimeEffect.h"
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sk_sp<SkBlender> GetRuntimeBlendForBlendMode(SkBlendMode mode) {
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static auto result = SkRuntimeEffect::MakeForBlender(SkString(R"(
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uniform blender b;
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half4 main(half4 src, half4 dst) {
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return sample(b, src, dst);
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}
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)"));
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SkASSERTF(result.effect, "%s", result.errorText.c_str());
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SkRuntimeBlendBuilder builder(result.effect);
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builder.child("b") = SkBlender::Mode(mode);
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return builder.makeBlender();
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}
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