| /* |
| * Copyright 2016 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "Test.h" |
| |
| #if SK_SUPPORT_GPU |
| |
| #include "GrFragmentProcessor.h" |
| #include "GrInvariantOutput.h" |
| #include "GrRenderTargetContext.h" |
| #include "GrTexture.h" |
| #include "glsl/GrGLSLFragmentProcessor.h" |
| #include "glsl/GrGLSLFragmentShaderBuilder.h" |
| |
| DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ImageStorageLoad, reporter, ctxInfo) { |
| class TestFP : public GrFragmentProcessor { |
| public: |
| static sk_sp<GrFragmentProcessor> Make(sk_sp<GrTexture> texture, GrSLMemoryModel mm, |
| GrSLRestrict restrict) { |
| return sk_sp<GrFragmentProcessor>(new TestFP(std::move(texture), mm, restrict)); |
| } |
| |
| const char* name() const override { return "Image Load Test FP"; } |
| |
| private: |
| TestFP(sk_sp<GrTexture> texture, GrSLMemoryModel mm, GrSLRestrict restrict) |
| : INHERITED(kNone_OptimizationFlags) |
| , fImageStorageAccess(std::move(texture), kRead_GrIOType, mm, restrict) { |
| this->initClassID<TestFP>(); |
| this->setWillReadFragmentPosition(); |
| this->addImageStorageAccess(&fImageStorageAccess); |
| } |
| |
| void onGetGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder*) const override {} |
| |
| void onComputeInvariantOutput(GrInvariantOutput* inout) const override { |
| inout->setToUnknown(); |
| } |
| |
| bool onIsEqual(const GrFragmentProcessor& that) const override { return true; } |
| |
| GrGLSLFragmentProcessor* onCreateGLSLInstance() const override { |
| class GLSLProcessor : public GrGLSLFragmentProcessor { |
| public: |
| GLSLProcessor() = default; |
| void emitCode(EmitArgs& args) override { |
| const TestFP& tfp = args.fFp.cast<TestFP>(); |
| GrGLSLFPFragmentBuilder* fb = args.fFragBuilder; |
| SkString imageLoadStr; |
| fb->codeAppendf("highp vec2 coord = %s.xy;", |
| args.fFragBuilder->fragmentPosition()); |
| fb->appendImageStorageLoad(&imageLoadStr, args.fImageStorages[0], |
| "ivec2(coord)"); |
| if (GrPixelConfigIsSint(tfp.fImageStorageAccess.texture()->config())) { |
| // Map the signed bytes so that when then get read back as unorm values they |
| // will have their original bit pattern. |
| fb->codeAppendf("highp ivec4 ivals = %s;", imageLoadStr.c_str()); |
| // NV gives a linker error for this: |
| // fb->codeAppend("ivals += |
| // "mix(ivec4(0), ivec4(256), lessThan(ivals, ivec4(0)));"); |
| fb->codeAppend("if (ivals.r < 0) { ivals.r += 256; }"); |
| fb->codeAppend("if (ivals.g < 0) { ivals.g += 256; }"); |
| fb->codeAppend("if (ivals.b < 0) { ivals.b += 256; }"); |
| fb->codeAppend("if (ivals.a < 0) { ivals.a += 256; }"); |
| fb->codeAppendf("%s = vec4(ivals)/255;", args.fOutputColor); |
| } else { |
| fb->codeAppendf("%s = %s;", args.fOutputColor, imageLoadStr.c_str()); |
| } |
| } |
| }; |
| return new GLSLProcessor; |
| } |
| |
| ImageStorageAccess fImageStorageAccess; |
| typedef GrFragmentProcessor INHERITED; |
| }; |
| |
| static constexpr int kS = 256; |
| GrContext* context = ctxInfo.grContext(); |
| if (context->caps()->shaderCaps()->maxFragmentImageStorages() < 1) { |
| return; |
| } |
| |
| std::unique_ptr<uint32_t[]> data(new uint32_t[kS * kS]); |
| for (int j = 0; j < kS; ++j) { |
| for (int i = 0; i < kS; ++i) { |
| data[i + kS * j] = GrColorPackRGBA(i, j, 0, 0); |
| } |
| } |
| |
| std::unique_ptr<uint32_t[]> idata(new uint32_t[kS * kS]); |
| for (int j = 0; j < kS; ++j) { |
| for (int i = 0; i < kS; ++i) { |
| int8_t r = i - 128; |
| int8_t g = j - 128; |
| int8_t b = -128; |
| int8_t a = -128; |
| idata[i + kS * j] = ((uint8_t)a << 24) | ((uint8_t)b << 16) | |
| ((uint8_t)g << 8) | (uint8_t)r; |
| } |
| } |
| |
| // Currently image accesses always have "top left" semantics. |
| GrSurfaceDesc desc; |
| desc.fOrigin = kTopLeft_GrSurfaceOrigin; |
| desc.fWidth = kS; |
| desc.fHeight = kS; |
| struct { |
| GrPixelConfig fConfig; |
| std::unique_ptr<uint32_t[]> fData; |
| } tests[] = { |
| { |
| kRGBA_8888_GrPixelConfig, |
| std::move(data) |
| }, |
| { |
| kRGBA_8888_sint_GrPixelConfig, |
| std::move(idata) |
| }, |
| }; |
| for (const auto& test : tests) { |
| // This test should work with any memory model and with or without restrict |
| for (auto mm : {GrSLMemoryModel::kNone, |
| GrSLMemoryModel::kCoherent, |
| GrSLMemoryModel::kVolatile}) { |
| for (auto restrict : {GrSLRestrict::kNo, GrSLRestrict::kYes}) { |
| if (!context->caps()->canConfigBeImageStorage(test.fConfig)) { |
| continue; |
| } |
| desc.fConfig = test.fConfig; |
| sk_sp<GrTexture> imageStorageTexture(context->textureProvider()->createTexture(desc, |
| SkBudgeted::kYes, test.fData.get(), 0)); |
| |
| sk_sp<GrRenderTargetContext> rtContext = |
| context->makeRenderTargetContext(SkBackingFit::kExact, kS, kS, |
| kRGBA_8888_GrPixelConfig, nullptr); |
| GrPaint paint; |
| paint.setPorterDuffXPFactory(SkBlendMode::kSrc); |
| paint.addColorFragmentProcessor(TestFP::Make(imageStorageTexture, mm, restrict)); |
| rtContext->drawPaint(GrNoClip(), std::move(paint), SkMatrix::I()); |
| std::unique_ptr<uint32_t[]> readData(new uint32_t[kS * kS]); |
| SkImageInfo info = SkImageInfo::Make(kS, kS, kRGBA_8888_SkColorType, |
| kPremul_SkAlphaType); |
| rtContext->readPixels(info, readData.get(), 0, 0, 0); |
| int failed = false; |
| for (int j = 0; j < kS && !failed; ++j) { |
| for (int i = 0; i < kS && !failed; ++i) { |
| uint32_t d = test.fData[j * kS + i]; |
| uint32_t rd = readData[j * kS + i]; |
| if (d != rd) { |
| failed = true; |
| ERRORF(reporter, "Expected 0x%08x, got 0x%08x at %d, %d.", d, rd, i, j); |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| #endif |