74 lines
2.0 KiB
C++
74 lines
2.0 KiB
C++
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/*
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* Copyright 2019 Google LLC
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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 "gm/gm.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColorFilter.h"
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#include "include/core/SkData.h"
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#include "include/core/SkImage.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "src/core/SkColorFilterPriv.h"
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#include "src/core/SkReadBuffer.h"
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#include "src/core/SkWriteBuffer.h"
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#include "src/shaders/SkRTShader.h"
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#include "tools/Resources.h"
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#include <stddef.h>
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static const char* RUNTIME_FUNCTIONS_SRC = R"(
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layout(ctype=SkRect) in uniform half4 gColor;
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half scale(float x) {
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return half(x) / 255;
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}
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half4 blackAndWhite(half4 raw) {
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half value = raw.r * 0.22 + raw.g * 0.67 + raw.b * 0.11;
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return half4(half3(value), raw.a);
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}
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void main(float x, float y, inout half4 color) {
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color = blackAndWhite(half4(scale(x), scale(y), gColor.b, 1));
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}
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)";
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static sk_sp<SkShader> gShader;
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class RuntimeFunctions : public skiagm::GM {
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sk_sp<SkData> fData;
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bool runAsBench() const override { return true; }
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SkString onShortName() override { return SkString("runtimefunctions"); }
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SkISize onISize() override { return {256, 256}; }
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void onOnceBeforeDraw() override {
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// use global to pass gl persistent cache test in dm
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if (!gShader) {
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SkMatrix localM;
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localM.setRotate(90, 128, 128);
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fData = SkData::MakeUninitialized(sizeof(SkColor4f));
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SkColor4f* c = (SkColor4f*)fData->writable_data();
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*c = {1, 0, 0, 1};
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gShader = SkRuntimeShaderFactory(SkString(RUNTIME_FUNCTIONS_SRC),
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true).make(fData, &localM);
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}
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}
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void onDraw(SkCanvas* canvas) override {
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SkPaint p;
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p.setShader(gShader);
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canvas->drawRect({0, 0, 256, 256}, p);
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}
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};
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DEF_GM(return new RuntimeFunctions;)
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