Ethan Nicholas | 5843012 | 2020-04-14 09:54:02 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2019 Google LLC. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "gm/gm.h" |
| 9 | #include "include/effects/SkGradientShader.h" |
Brian Osman | 449b115 | 2020-04-15 16:43:00 -0400 | [diff] [blame] | 10 | #include "src/core/SkMatrixProvider.h" |
Ethan Nicholas | 5843012 | 2020-04-14 09:54:02 -0400 | [diff] [blame] | 11 | #include "src/gpu/GrBitmapTextureMaker.h" |
Ethan Nicholas | 5843012 | 2020-04-14 09:54:02 -0400 | [diff] [blame] | 12 | #include "src/gpu/GrContextPriv.h" |
| 13 | #include "src/gpu/GrRenderTargetContextPriv.h" |
| 14 | #include "src/gpu/glsl/GrGLSLFragmentShaderBuilder.h" |
| 15 | #include "src/gpu/ops/GrFillRectOp.h" |
| 16 | #include "tools/Resources.h" |
| 17 | |
| 18 | class SampleMatrixVariableEffect : public GrFragmentProcessor { |
| 19 | public: |
| 20 | static constexpr GrProcessor::ClassID CLASS_ID = (GrProcessor::ClassID) 2; |
| 21 | |
Brian Osman | 5d7759e | 2020-05-29 09:25:56 -0400 | [diff] [blame] | 22 | SampleMatrixVariableEffect(std::unique_ptr<GrFragmentProcessor> child, |
| 23 | float xOffset, |
Ethan Nicholas | afe2c90 | 2020-04-28 13:55:02 -0400 | [diff] [blame] | 24 | float yOffset) |
Brian Osman | 5d7759e | 2020-05-29 09:25:56 -0400 | [diff] [blame] | 25 | : INHERITED(CLASS_ID, kNone_OptimizationFlags) |
| 26 | , fXOffset(xOffset) |
| 27 | , fYOffset(yOffset) { |
Brian Osman | 1298bc4 | 2020-06-30 13:39:35 -0400 | [diff] [blame] | 28 | this->registerChild(std::move(child), SkSL::SampleUsage::VariableMatrix()); |
Ethan Nicholas | 5843012 | 2020-04-14 09:54:02 -0400 | [diff] [blame] | 29 | } |
| 30 | |
| 31 | const char* name() const override { return "SampleMatrixVariableEffect"; } |
| 32 | |
| 33 | std::unique_ptr<GrFragmentProcessor> clone() const override { |
| 34 | SkASSERT(false); |
| 35 | return nullptr; |
| 36 | } |
| 37 | |
Brian Osman | 5d7759e | 2020-05-29 09:25:56 -0400 | [diff] [blame] | 38 | void onGetGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder*) const override {} |
| 39 | bool onIsEqual(const GrFragmentProcessor& that) const override { return this == &that; } |
Ethan Nicholas | 5843012 | 2020-04-14 09:54:02 -0400 | [diff] [blame] | 40 | |
| 41 | private: |
| 42 | GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
Ethan Nicholas | afe2c90 | 2020-04-28 13:55:02 -0400 | [diff] [blame] | 43 | |
| 44 | float fXOffset; |
| 45 | float fYOffset; |
| 46 | |
Ethan Nicholas | 5843012 | 2020-04-14 09:54:02 -0400 | [diff] [blame] | 47 | typedef GrFragmentProcessor INHERITED; |
Ethan Nicholas | afe2c90 | 2020-04-28 13:55:02 -0400 | [diff] [blame] | 48 | friend class GLSLSampleMatrixVariableEffect; |
Ethan Nicholas | 5843012 | 2020-04-14 09:54:02 -0400 | [diff] [blame] | 49 | }; |
| 50 | |
| 51 | class GLSLSampleMatrixVariableEffect : public GrGLSLFragmentProcessor { |
| 52 | void emitCode(EmitArgs& args) override { |
Ethan Nicholas | afe2c90 | 2020-04-28 13:55:02 -0400 | [diff] [blame] | 53 | auto& smve = args.fFp.cast<SampleMatrixVariableEffect>(); |
Ethan Nicholas | 5843012 | 2020-04-14 09:54:02 -0400 | [diff] [blame] | 54 | GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
| 55 | SkString sample1 = this->invokeChildWithMatrix(0, args, "float3x3(1)"); |
Ethan Nicholas | afe2c90 | 2020-04-28 13:55:02 -0400 | [diff] [blame] | 56 | SkString sample2 = this->invokeChildWithMatrix(0, args, |
| 57 | SkStringPrintf("float3x3(1, -1, 0, 1, 0, 0, " |
| 58 | "%g, %g, 1)", |
| 59 | smve.fXOffset, |
| 60 | smve.fYOffset).c_str()); |
Ethan Nicholas | 5843012 | 2020-04-14 09:54:02 -0400 | [diff] [blame] | 61 | fragBuilder->codeAppendf("%s = (%s + %s) / 2;\n", args.fOutputColor, sample1.c_str(), |
| 62 | sample2.c_str()); |
| 63 | } |
| 64 | }; |
| 65 | |
| 66 | GrGLSLFragmentProcessor* SampleMatrixVariableEffect::onCreateGLSLInstance() const { |
| 67 | return new GLSLSampleMatrixVariableEffect(); |
| 68 | } |
| 69 | |
| 70 | DEF_SIMPLE_GPU_GM(sample_matrix_variable, ctx, rtCtx, canvas, 512, 256) { |
Brian Osman | 5d7759e | 2020-05-29 09:25:56 -0400 | [diff] [blame] | 71 | auto draw = [rtCtx](std::unique_ptr<GrFragmentProcessor> baseFP, float ofsX, float ofsY, |
| 72 | int tx, int ty) { |
| 73 | auto fp = std::unique_ptr<GrFragmentProcessor>( |
| 74 | new SampleMatrixVariableEffect(std::move(baseFP), ofsX, ofsY)); |
| 75 | GrPaint paint; |
| 76 | paint.addColorFragmentProcessor(std::move(fp)); |
| 77 | rtCtx->drawRect(nullptr, std::move(paint), GrAA::kNo, SkMatrix::Translate(tx, ty), |
| 78 | SkRect::MakeIWH(256, 256)); |
| 79 | }; |
| 80 | |
Ethan Nicholas | 5843012 | 2020-04-14 09:54:02 -0400 | [diff] [blame] | 81 | { |
Ethan Nicholas | 5843012 | 2020-04-14 09:54:02 -0400 | [diff] [blame] | 82 | SkBitmap bmp; |
| 83 | GetResourceAsBitmap("images/mandrill_256.png", &bmp); |
| 84 | GrBitmapTextureMaker maker(ctx, bmp, GrImageTexGenPolicy::kDraw); |
| 85 | auto view = maker.view(GrMipMapped::kNo); |
| 86 | std::unique_ptr<GrFragmentProcessor> imgFP = |
| 87 | GrTextureEffect::Make(std::move(view), bmp.alphaType(), SkMatrix()); |
Brian Osman | 5d7759e | 2020-05-29 09:25:56 -0400 | [diff] [blame] | 88 | draw(std::move(imgFP), -128, 256, 0, 0); |
Ethan Nicholas | 5843012 | 2020-04-14 09:54:02 -0400 | [diff] [blame] | 89 | } |
| 90 | |
| 91 | { |
Ethan Nicholas | 5843012 | 2020-04-14 09:54:02 -0400 | [diff] [blame] | 92 | static constexpr SkColor colors[] = { 0xff00ff00, 0xffff00ff }; |
Ethan Nicholas | 5843012 | 2020-04-14 09:54:02 -0400 | [diff] [blame] | 93 | const SkPoint pts[] = {{ 256, 0 }, { 512, 0 }}; |
| 94 | |
Brian Osman | 5d7759e | 2020-05-29 09:25:56 -0400 | [diff] [blame] | 95 | auto shader = SkGradientShader::MakeLinear(pts, colors, nullptr, |
Ethan Nicholas | 5843012 | 2020-04-14 09:54:02 -0400 | [diff] [blame] | 96 | SK_ARRAY_COUNT(colors), |
| 97 | SkTileMode::kRepeat); |
| 98 | SkMatrix matrix; |
Brian Osman | 449b115 | 2020-04-15 16:43:00 -0400 | [diff] [blame] | 99 | SkSimpleMatrixProvider matrixProvider(matrix); |
Ethan Nicholas | 5843012 | 2020-04-14 09:54:02 -0400 | [diff] [blame] | 100 | GrColorInfo colorInfo; |
Brian Osman | 449b115 | 2020-04-15 16:43:00 -0400 | [diff] [blame] | 101 | GrFPArgs args(ctx, matrixProvider, kHigh_SkFilterQuality, &colorInfo); |
Ethan Nicholas | 5843012 | 2020-04-14 09:54:02 -0400 | [diff] [blame] | 102 | std::unique_ptr<GrFragmentProcessor> gradientFP = as_SB(shader)->asFragmentProcessor(args); |
Michael Ludwig | e88320b | 2020-06-24 09:04:56 -0400 | [diff] [blame] | 103 | draw(std::move(gradientFP), -128, 256, 256, 0); |
Ethan Nicholas | 5843012 | 2020-04-14 09:54:02 -0400 | [diff] [blame] | 104 | } |
| 105 | } |