95 lines
3.1 KiB
C++
95 lines
3.1 KiB
C++
/*
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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/SkColor.h"
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#include "include/core/SkImageInfo.h"
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#include "include/core/SkMatrix.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkShader.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/core/SkTileMode.h"
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#include "include/core/SkTypes.h"
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#include "src/core/SkCanvasPriv.h"
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#include "src/gpu/GrCaps.h"
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#include "src/gpu/GrDirectContextPriv.h"
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#include "src/gpu/GrFragmentProcessor.h"
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#include "src/gpu/SkGr.h"
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#include "src/gpu/SurfaceFillContext.h"
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#include "src/gpu/effects/GrRRectEffect.h"
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#include "src/gpu/effects/GrSkSLFP.h"
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#include "src/gpu/effects/GrTextureEffect.h"
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#include "src/gpu/glsl/GrGLSLFragmentShaderBuilder.h"
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#include "tools/Resources.h"
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#include "tools/ToolUtils.h"
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class SampleCoordEffect : public GrFragmentProcessor {
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public:
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inline static constexpr GrProcessor::ClassID CLASS_ID = (GrProcessor::ClassID) 0;
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SampleCoordEffect(std::unique_ptr<GrFragmentProcessor> child)
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: INHERITED(CLASS_ID, kNone_OptimizationFlags) {
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this->registerChild(std::move(child), SkSL::SampleUsage::Explicit());
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}
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const char* name() const override { return "SampleCoordEffect"; }
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std::unique_ptr<GrFragmentProcessor> clone() const override {
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SkASSERT(false);
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return nullptr;
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}
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void onAddToKey(const GrShaderCaps&, skgpu::KeyBuilder*) const override {}
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bool onIsEqual(const GrFragmentProcessor&) const override {
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SkASSERT(false);
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return true;
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}
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private:
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std::unique_ptr<ProgramImpl> onMakeProgramImpl() const override;
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using INHERITED = GrFragmentProcessor;
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};
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std::unique_ptr<GrFragmentProcessor::ProgramImpl> SampleCoordEffect::onMakeProgramImpl() const {
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class Impl : public ProgramImpl {
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public:
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void emitCode(EmitArgs& args) override {
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GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
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SkString s1 = this->invokeChild(0, args, "float2(sk_FragCoord.x, sk_FragCoord.y)");
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SkString s2 = this->invokeChild(0, args, "float2(sk_FragCoord.x, 512-sk_FragCoord.y)");
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fragBuilder->codeAppendf("return (%s + %s) / 2;\n", s1.c_str(), s2.c_str());
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}
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};
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return std::make_unique<Impl>();
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}
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DEF_SIMPLE_GPU_GM_BG(fpcoordinateoverride, rContext, canvas, 512, 512,
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ToolUtils::color_to_565(0xFF66AA99)) {
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auto sfc = SkCanvasPriv::TopDeviceSurfaceFillContext(canvas);
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if (!sfc) {
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return;
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}
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SkBitmap bmp;
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GetResourceAsBitmap("images/mandrill_512_q075.jpg", &bmp);
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auto view = std::get<0>(GrMakeCachedBitmapProxyView(rContext, bmp, GrMipmapped::kNo));
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if (!view) {
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return;
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}
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std::unique_ptr<GrFragmentProcessor> imgFP =
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GrTextureEffect::Make(std::move(view), bmp.alphaType(), SkMatrix());
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auto fp = std::unique_ptr<GrFragmentProcessor>(new SampleCoordEffect(std::move(imgFP)));
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sfc->fillWithFP(std::move(fp));
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}
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