blob: b14fe08ab022160194ffbedfeb41fc96770db143 [file] [log] [blame]
/*
* Copyright 2021 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/effects/SkRuntimeEffect.h"
#include "src/core/SkCanvasPriv.h"
#include "src/gpu/SurfaceFillContext.h"
#include "src/gpu/glsl/GrGLSLFragmentShaderBuilder.h"
#include "src/sksl/dsl/priv/DSLFPs.h"
#include "src/sksl/dsl/priv/DSLWriter.h"
#include "src/sksl/ir/SkSLVariable.h"
class SimpleDSLEffect : public GrFragmentProcessor {
public:
static constexpr GrProcessor::ClassID CLASS_ID = (GrProcessor::ClassID) 100;
SimpleDSLEffect() : GrFragmentProcessor(CLASS_ID, kNone_OptimizationFlags) {
}
const char* name() const override { return "DSLEffect"; }
void onAddToKey(const GrShaderCaps&, GrProcessorKeyBuilder*) const override {}
bool onIsEqual(const GrFragmentProcessor& that) const override { return this == &that; }
std::unique_ptr<GrFragmentProcessor> clone() const override { return nullptr; }
std::unique_ptr<ProgramImpl> onMakeProgramImpl() const override {
class Impl : public ProgramImpl {
public:
void emitCode(EmitArgs& args) override {
using namespace SkSL::dsl;
StartFragmentProcessor(this, &args);
// Test for skbug.com/11384
Var x(kInt_Type, 1);
Declare(x);
SkASSERT(DSLWriter::Var(x)->initialValue()->description() == "1");
GlobalVar blueAlpha(kUniform_Modifier, kHalf2_Type, "blueAlpha");
Declare(blueAlpha);
fBlueAlphaUniform = VarUniformHandle(blueAlpha);
Var coords(kFloat4_Type, sk_FragCoord());
Declare(coords);
Return(Half4(Swizzle(coords, X, Y) / 100, blueAlpha));
EndFragmentProcessor();
}
private:
void onSetData(const GrGLSLProgramDataManager& pdman,
const GrFragmentProcessor& effect) override {
pdman.set2f(fBlueAlphaUniform, 0.0, 1.0);
}
GrGLSLProgramDataManager::UniformHandle fBlueAlphaUniform;
};
return std::make_unique<Impl>();
}
};
DEF_SIMPLE_GPU_GM(simple_dsl_test, rContext, canvas, 100, 100) {
auto sfc = SkCanvasPriv::TopDeviceSurfaceFillContext(canvas);
if (!sfc) {
return;
}
sfc->fillWithFP(std::make_unique<SimpleDSLEffect>());
}