12a75588e7
Change-Id: I20fc4b4c3d6997f3ebc1d6d0049447b348f8a110 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/387416 Reviewed-by: John Stiles <johnstiles@google.com> Commit-Queue: Mike Reed <reed@google.com>
108 lines
4.3 KiB
C++
108 lines
4.3 KiB
C++
/*
|
|
* 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/effects/SkGradientShader.h"
|
|
#include "src/core/SkMatrixProvider.h"
|
|
#include "src/gpu/GrBitmapTextureMaker.h"
|
|
#include "src/gpu/GrDirectContextPriv.h"
|
|
#include "src/gpu/glsl/GrGLSLFragmentShaderBuilder.h"
|
|
#include "src/gpu/ops/GrFillRectOp.h"
|
|
#include "tools/Resources.h"
|
|
|
|
class SampleMatrixConstantEffect : public GrFragmentProcessor {
|
|
public:
|
|
static constexpr GrProcessor::ClassID CLASS_ID = (GrProcessor::ClassID) 1;
|
|
|
|
SampleMatrixConstantEffect(std::unique_ptr<GrFragmentProcessor> child)
|
|
: INHERITED(CLASS_ID, kNone_OptimizationFlags) {
|
|
this->registerChild(std::move(child),
|
|
SkSL::SampleUsage::UniformMatrix(
|
|
"float3x3(float3(0.5, 0.0, 0.0), "
|
|
"float3(0.0, 0.5, 0.0), "
|
|
"float3(0.0, 0.0, 1.0))"));
|
|
}
|
|
|
|
const char* name() const override { return "SampleMatrixConstantEffect"; }
|
|
|
|
std::unique_ptr<GrFragmentProcessor> clone() const override {
|
|
SkASSERT(false);
|
|
return nullptr;
|
|
}
|
|
|
|
void onGetGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder*) const override {}
|
|
bool onIsEqual(const GrFragmentProcessor& that) const override { return this == &that; }
|
|
|
|
private:
|
|
std::unique_ptr<GrGLSLFragmentProcessor> onMakeProgramImpl() const override;
|
|
using INHERITED = GrFragmentProcessor;
|
|
};
|
|
|
|
class GLSLSampleMatrixConstantEffect : public GrGLSLFragmentProcessor {
|
|
void emitCode(EmitArgs& args) override {
|
|
GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
|
|
SkString sample = this->invokeChildWithMatrix(0, args);
|
|
fragBuilder->codeAppendf("return %s;\n", sample.c_str());
|
|
}
|
|
};
|
|
|
|
std::unique_ptr<GrGLSLFragmentProcessor> SampleMatrixConstantEffect::onMakeProgramImpl() const {
|
|
return std::make_unique<GLSLSampleMatrixConstantEffect>();
|
|
}
|
|
|
|
DEF_SIMPLE_GPU_GM(sample_matrix_constant, ctx, rtCtx, canvas, 1024, 256) {
|
|
auto wrap = [](std::unique_ptr<GrFragmentProcessor> baseFP) {
|
|
return std::unique_ptr<GrFragmentProcessor>(
|
|
new SampleMatrixConstantEffect(std::move(baseFP)));
|
|
};
|
|
auto draw = [rtCtx, &wrap](std::unique_ptr<GrFragmentProcessor> baseFP, int tx, int ty) {
|
|
auto fp = wrap(std::move(baseFP));
|
|
GrPaint paint;
|
|
paint.setColorFragmentProcessor(std::move(fp));
|
|
rtCtx->drawRect(nullptr, std::move(paint), GrAA::kNo, SkMatrix::Translate(tx, ty),
|
|
SkRect::MakeIWH(256, 256));
|
|
};
|
|
auto draw2 = [rtCtx, &wrap](std::unique_ptr<GrFragmentProcessor> baseFP, int tx, int ty) {
|
|
auto fp = wrap(wrap(std::move(baseFP)));
|
|
GrPaint paint;
|
|
paint.setColorFragmentProcessor(std::move(fp));
|
|
rtCtx->drawRect(nullptr, std::move(paint), GrAA::kNo, SkMatrix::Translate(tx, ty),
|
|
SkRect::MakeIWH(256, 256));
|
|
};
|
|
|
|
{
|
|
SkBitmap bmp;
|
|
GetResourceAsBitmap("images/mandrill_256.png", &bmp);
|
|
GrBitmapTextureMaker maker(ctx, bmp, GrImageTexGenPolicy::kDraw);
|
|
auto view = maker.view(GrMipmapped::kNo);
|
|
std::unique_ptr<GrFragmentProcessor> imgFP =
|
|
GrTextureEffect::Make(std::move(view), bmp.alphaType(), SkMatrix());
|
|
draw(std::move(imgFP), 0, 0);
|
|
view = maker.view(GrMipmapped::kNo);
|
|
imgFP =
|
|
GrTextureEffect::Make(std::move(view), bmp.alphaType(), SkMatrix());
|
|
draw2(std::move(imgFP), 256, 0);
|
|
}
|
|
|
|
{
|
|
static constexpr SkColor colors[] = { 0xff00ff00, 0xffff00ff };
|
|
const SkPoint pts[] = {{ 0, 0 }, { 256, 0 }};
|
|
|
|
auto shader = SkGradientShader::MakeLinear(pts, colors, nullptr,
|
|
SK_ARRAY_COUNT(colors),
|
|
SkTileMode::kClamp);
|
|
SkMatrix matrix;
|
|
SkSimpleMatrixProvider matrixProvider(matrix);
|
|
GrColorInfo colorInfo;
|
|
GrFPArgs args(ctx, matrixProvider, &colorInfo);
|
|
std::unique_ptr<GrFragmentProcessor> gradientFP = as_SB(shader)->asFragmentProcessor(args);
|
|
draw(std::move(gradientFP), 512, 0);
|
|
gradientFP = as_SB(shader)->asFragmentProcessor(args);
|
|
draw2(std::move(gradientFP), 768, 0);
|
|
}
|
|
}
|