blob: f8b7450167d92ba4e694f928dec22519e256ed33 [file] [log] [blame]
/*
* Copyright 2019 Google LLC
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm/gm.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkData.h"
#include "include/core/SkPaint.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/effects/SkRuntimeEffect.h"
static const char* RUNTIME_FUNCTIONS_SRC = R"(
uniform half4 gColor;
half scale(float x) {
return x / 255;
}
half4 blackAndWhite(half4 raw) {
half value = raw.r * 0.22 + raw.g * 0.67 + raw.b * 0.11;
return half4(value.xxx, raw.a);
}
half4 main(float2 p) {
return blackAndWhite(half4(scale(p.x), scale(p.y), gColor.b, 1));
}
)";
class RuntimeFunctions : public skiagm::GM {
bool runAsBench() const override { return true; }
SkString onShortName() override { return SkString("runtimefunctions"); }
SkISize onISize() override { return {256, 256}; }
void onDraw(SkCanvas* canvas) override {
sk_sp<SkRuntimeEffect> gEffect =
std::get<0>(SkRuntimeEffect::Make(SkString(RUNTIME_FUNCTIONS_SRC)));
SkASSERT(gEffect);
SkMatrix localM;
localM.setRotate(90, 128, 128);
SkColor4f inputColor = { 1, 0, 0, 1 };
auto shader = gEffect->makeShader(SkData::MakeWithCopy(&inputColor, sizeof(inputColor)),
nullptr, 0, &localM, true);
SkPaint p;
p.setShader(std::move(shader));
canvas->drawRect({0, 0, 256, 256}, p);
}
};
DEF_GM(return new RuntimeFunctions;)