| /* |
| * Copyright 2020 Google, LLC |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkDeferredDisplayList.h" |
| #include "include/core/SkDeferredDisplayListRecorder.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkSurface.h" |
| #include "include/core/SkSurfaceCharacterization.h" |
| #include "include/gpu/GrDirectContext.h" |
| #include "include/private/gpu/ganesh/GrTypesPriv.h" |
| #include "src/gpu/ganesh/GrShaderCaps.h" |
| #include "tools/gpu/GrContextFactory.h" |
| |
| #include "fuzz/Fuzz.h" |
| |
| #include <tuple> |
| |
| /** |
| * The fuzzer aims to fuzz the use of SkDeferredDisplayList. It mainly consists of |
| * three parts. |
| * 1. In create_surface_characterization, (make_characterization) Create SkSurfaceCharacterization |
| * by using GrDirectContext of kGL_ContextType as it can be applied on all platform, and |
| * (make_surface) create a GPU backend surface of the same GrDirectContext |
| * 2. (make_ddl) Create SkDeferredDisplayListRecorder from the SkSurfaceCharacterization, and test |
| * the recoder's corresponding canvas. |
| * 3. (make_ddl, draw_ddl) Create SkDeferredDisplayList from the SkDeferredDisplayRecorder and draw |
| * the ddl on a GPU backend surface. |
| */ |
| |
| static constexpr int kMaxWidth = 64; |
| static constexpr int kMaxHeight = 64; |
| static constexpr int kSampleCount = 1; |
| |
| static SkSurfaceProps gen_fuzzed_surface_props(Fuzz* fuzz) { |
| SkPixelGeometry pixel; |
| fuzz->nextEnum(&pixel, kBGR_V_SkPixelGeometry); |
| return SkSurfaceProps(0x0, pixel); |
| } |
| |
| static SkPaint gen_fuzzed_skpaint(Fuzz* fuzz) { |
| float R, G, B, Alpha; |
| fuzz->nextRange(&R, -1, 2); |
| fuzz->nextRange(&G, -1, 2); |
| fuzz->nextRange(&B, -1, 2); |
| fuzz->nextRange(&Alpha, 0, 1); |
| SkColor4f color = {R, G, B, Alpha}; |
| return SkPaint(color); |
| } |
| |
| static SkImageInfo gen_fuzzed_imageinfo(Fuzz* fuzz, SkColorType surfaceType) { |
| int width, height; |
| fuzz->nextRange(&width, 1, kMaxWidth); |
| fuzz->nextRange(&height, 1, kMaxHeight); |
| SkAlphaType alphaType; |
| fuzz->nextEnum(&alphaType, SkAlphaType::kLastEnum_SkAlphaType); |
| skcms_TransferFunction skcmsFn; |
| uint8_t skcms; |
| fuzz->nextRange(&skcms, 0, 5); |
| switch (skcms) { |
| case 0: { |
| skcmsFn = SkNamedTransferFn::kSRGB; |
| break; |
| } |
| case 1: { |
| skcmsFn = SkNamedTransferFn::k2Dot2; |
| break; |
| } |
| case 2: { |
| skcmsFn = SkNamedTransferFn::kHLG; |
| break; |
| } |
| case 3: { |
| skcmsFn = SkNamedTransferFn::kLinear; |
| break; |
| } |
| case 4: { |
| skcmsFn = SkNamedTransferFn::kPQ; |
| break; |
| } |
| case 5: { |
| skcmsFn = SkNamedTransferFn::kRec2020; |
| break; |
| } |
| default: |
| SkASSERT(false); |
| break; |
| } |
| skcms_Matrix3x3 skcmsMat; |
| fuzz->nextRange(&skcms, 0, 4); |
| switch (skcms) { |
| case 0: { |
| skcmsMat = SkNamedGamut::kAdobeRGB; |
| break; |
| } |
| case 1: { |
| skcmsMat = SkNamedGamut::kDisplayP3; |
| break; |
| } |
| case 2: { |
| skcmsMat = SkNamedGamut::kRec2020; |
| break; |
| } |
| case 3: { |
| skcmsMat = SkNamedGamut::kSRGB; |
| break; |
| } |
| case 4: { |
| skcmsMat = SkNamedGamut::kXYZ; |
| break; |
| } |
| default: |
| SkASSERT(false); |
| break; |
| } |
| return SkImageInfo::Make(width, height, surfaceType, alphaType, |
| SkColorSpace::MakeRGB(skcmsFn, skcmsMat)); |
| } |
| |
| static SkSurfaceCharacterization make_characterization(Fuzz* fuzz, GrDirectContext* dContext, |
| SkImageInfo& ii, SkColorType surfaceType, |
| GrSurfaceOrigin origin) { |
| if (!dContext->colorTypeSupportedAsSurface(surfaceType)) { |
| SkDebugf("Couldn't create backend texture in the backend %s", |
| GrBackendApiToStr(dContext->backend())); |
| return {}; |
| } |
| |
| GrBackendFormat backendFormat = dContext->defaultBackendFormat(surfaceType, |
| GrRenderable::kYes); |
| if (!backendFormat.isValid()) { |
| SkDebugf("Color Type is not supported in the backend %s", |
| GrBackendApiToStr(dContext->backend())); |
| return {}; |
| } |
| GrProtected protect = GrProtected::kNo; |
| #ifdef SK_VULKAN |
| fuzz->nextEnum(&protect, GrProtected::kYes); |
| #endif |
| SkSurfaceCharacterization c; |
| size_t maxResourceBytes = dContext->getResourceCacheLimit(); |
| c = dContext->threadSafeProxy()->createCharacterization( |
| maxResourceBytes, ii, backendFormat, kSampleCount, |
| origin, gen_fuzzed_surface_props(fuzz), true, |
| false, true, protect); |
| if (!c.isValid()) { |
| SkDebugf("Could not create Characterization in the backend %s", |
| GrBackendApiToStr(dContext->backend())); |
| return {}; |
| } |
| return c; |
| } |
| |
| static sk_sp<SkDeferredDisplayList> make_ddl(Fuzz* fuzz, GrDirectContext* dContext, |
| const SkSurfaceCharacterization& c) { |
| SkDeferredDisplayListRecorder r(c); |
| SkCanvas* canvas = r.getCanvas(); |
| if (!canvas) { |
| SkDebugf("Could not create canvas for backend %s", GrBackendApiToStr(dContext->backend())); |
| return nullptr; |
| } |
| // For now we only draw a rect into the DDL. This will be scaled up to draw more varied content. |
| SkRect tile; |
| fuzz->next(&tile); |
| canvas->drawRect(tile, gen_fuzzed_skpaint(fuzz)); |
| return r.detach(); |
| } |
| |
| static sk_sp<SkSurface> make_surface(Fuzz* fuzz, GrDirectContext* dContext, const SkImageInfo& ii, |
| GrSurfaceOrigin origin) { |
| skgpu::Budgeted budgeted; |
| fuzz->nextEnum(&budgeted, skgpu::Budgeted::kYes); |
| SkSurfaceProps surfaceProps = gen_fuzzed_surface_props(fuzz); |
| auto surface = SkSurface::MakeRenderTarget(dContext, budgeted, ii, kSampleCount, origin, |
| &surfaceProps); |
| return surface; |
| } |
| |
| static bool draw_ddl(sk_sp<SkSurface> surface, sk_sp<SkDeferredDisplayList> ddl) { |
| return surface->draw(std::move(ddl)); |
| } |
| |
| using SurfaceAndChar = std::tuple<sk_sp<SkSurface>, SkSurfaceCharacterization>; |
| static SurfaceAndChar create_surface_and_characterization(Fuzz* fuzz, GrDirectContext* dContext, |
| SkColorType surfaceType, |
| GrSurfaceOrigin origin) { |
| SkImageInfo ii = gen_fuzzed_imageinfo(fuzz, surfaceType); |
| SkSurfaceCharacterization c = make_characterization(fuzz, dContext, ii, surfaceType, origin); |
| if (!c.isValid()) { |
| return {}; |
| } |
| |
| auto surface = make_surface(fuzz, dContext, ii, origin); |
| if (!surface) { |
| return {}; |
| } |
| return {surface, c}; |
| } |
| |
| DEF_FUZZ(CreateDDL, fuzz) { |
| SkColorType surfaceType; |
| GrSurfaceOrigin origin; |
| fuzz->nextEnum(&surfaceType, SkColorType::kLastEnum_SkColorType); |
| fuzz->nextEnum(&origin, GrSurfaceOrigin::kTopLeft_GrSurfaceOrigin); |
| |
| sk_gpu_test::GrContextFactory factory; |
| auto ctxInfo = factory.getContextInfo(sk_gpu_test::GrContextFactory::kGL_ContextType); |
| |
| GrDirectContext* dContext = ctxInfo.directContext(); |
| if (!dContext) { |
| SkDebugf("Context creation failed"); |
| return; |
| } |
| |
| auto[surface, c] = create_surface_and_characterization(fuzz, dContext, surfaceType, origin); |
| if (!surface || !c.isValid()) { |
| return; |
| } |
| |
| sk_sp<SkDeferredDisplayList> ddl = make_ddl(fuzz, dContext, c); |
| if (!ddl) { |
| SkDebugf("Could not create ddl %s", GrBackendApiToStr(dContext->backend())); |
| return; |
| } |
| if (!draw_ddl(std::move(surface), std::move(ddl))) { |
| SkDebugf("Could not draw ddl in the backend"); |
| } |
| return; |
| } |