| /* | 
 |  * Copyright 2013 Google Inc. | 
 |  * | 
 |  * Use of this source code is governed by a BSD-style license that can be | 
 |  * found in the LICENSE file. | 
 |  */ | 
 |  | 
 | #include "include/core/SkAlphaType.h" | 
 | #include "include/core/SkBitmap.h" | 
 | #include "include/core/SkBlendMode.h" | 
 | #include "include/core/SkCanvas.h" | 
 | #include "include/core/SkColor.h" | 
 | #include "include/core/SkColorFilter.h" | 
 | #include "include/core/SkColorPriv.h" | 
 | #include "include/core/SkColorSpace.h" | 
 | #include "include/core/SkColorType.h" | 
 | #include "include/core/SkFont.h" | 
 | #include "include/core/SkImage.h" | 
 | #include "include/core/SkImageInfo.h" | 
 | #include "include/core/SkOverdrawCanvas.h" | 
 | #include "include/core/SkPaint.h" | 
 | #include "include/core/SkPath.h" | 
 | #include "include/core/SkPixmap.h" | 
 | #include "include/core/SkPoint.h" | 
 | #include "include/core/SkRRect.h" | 
 | #include "include/core/SkRect.h" | 
 | #include "include/core/SkRefCnt.h" | 
 | #include "include/core/SkRegion.h" | 
 | #include "include/core/SkSamplingOptions.h" | 
 | #include "include/core/SkScalar.h" | 
 | #include "include/core/SkShader.h" | 
 | #include "include/core/SkSize.h" | 
 | #include "include/core/SkString.h" | 
 | #include "include/core/SkSurface.h" | 
 | #include "include/core/SkTypes.h" | 
 | #include "include/effects/SkColorMatrix.h" | 
 | #include "include/gpu/GpuTypes.h" | 
 | #include "include/gpu/GrBackendSurface.h" | 
 | #include "include/gpu/GrDirectContext.h" | 
 | #include "include/gpu/GrTypes.h" | 
 | #include "include/private/SkColorData.h" | 
 | #include "include/private/base/SkDebug.h" | 
 | #include "include/private/base/SkFloatingPoint.h" | 
 | #include "include/private/base/SkMalloc.h" | 
 | #include "include/private/base/SkTo.h" | 
 | #include "include/private/gpu/ganesh/GrTypesPriv.h" | 
 | #include "src/core/SkAutoPixmapStorage.h" | 
 | #include "src/core/SkCanvasPriv.h" | 
 | #include "src/gpu/ganesh/Device_v1.h" | 
 | #include "src/gpu/ganesh/GrCaps.h" | 
 | #include "src/gpu/ganesh/GrColorInfo.h" | 
 | #include "src/gpu/ganesh/GrDirectContextPriv.h" | 
 | #include "src/gpu/ganesh/GrGpu.h" | 
 | #include "src/gpu/ganesh/GrRenderTarget.h" | 
 | #include "src/gpu/ganesh/GrRenderTargetProxy.h" | 
 | #include "src/gpu/ganesh/GrResourceProvider.h" | 
 | #include "src/gpu/ganesh/GrTextureProxy.h" | 
 | #include "src/gpu/ganesh/SurfaceContext.h" | 
 | #include "src/gpu/ganesh/SurfaceFillContext.h" | 
 | #include "src/gpu/ganesh/image/GrImageUtils.h" | 
 | #include "src/gpu/ganesh/surface/SkSurface_Ganesh.h" | 
 | #include "src/image/SkImage_Base.h" | 
 | #include "tests/CtsEnforcement.h" | 
 | #include "tests/Test.h" | 
 | #include "tests/TestHarness.h" | 
 | #include "tools/RuntimeBlendUtils.h" | 
 | #include "tools/ToolUtils.h" | 
 | #include "tools/gpu/BackendSurfaceFactory.h" | 
 | #include "tools/gpu/ManagedBackendTexture.h" | 
 | #include "tools/gpu/ProxyUtils.h" | 
 |  | 
 | #include <cstddef> | 
 | #include <cstdint> | 
 | #include <initializer_list> | 
 | #include <limits> | 
 | #include <memory> | 
 | #include <utility> | 
 |  | 
 | class GrRecordingContext; | 
 | struct GrContextOptions; | 
 |  | 
 | static void release_direct_surface_storage(void* pixels, void* context) { | 
 |     SkASSERT(pixels == context); | 
 |     sk_free(pixels); | 
 | } | 
 | static sk_sp<SkSurface> create_surface(SkAlphaType at = kPremul_SkAlphaType, | 
 |                                        SkImageInfo* requestedInfo = nullptr) { | 
 |     const SkImageInfo info = SkImageInfo::MakeN32(10, 10, at); | 
 |     if (requestedInfo) { | 
 |         *requestedInfo = info; | 
 |     } | 
 |     return SkSurface::MakeRaster(info); | 
 | } | 
 | static sk_sp<SkSurface> create_direct_surface(SkAlphaType at = kPremul_SkAlphaType, | 
 |                                               SkImageInfo* requestedInfo = nullptr) { | 
 |     const SkImageInfo info = SkImageInfo::MakeN32(10, 10, at); | 
 |     if (requestedInfo) { | 
 |         *requestedInfo = info; | 
 |     } | 
 |     const size_t rowBytes = info.minRowBytes(); | 
 |     void* storage = sk_malloc_throw(info.computeByteSize(rowBytes)); | 
 |     return SkSurface::MakeRasterDirectReleaseProc(info, storage, rowBytes, | 
 |                                                   release_direct_surface_storage, | 
 |                                                   storage); | 
 | } | 
 | static sk_sp<SkSurface> create_gpu_surface(GrRecordingContext* rContext, | 
 |                                            SkAlphaType at = kPremul_SkAlphaType, | 
 |                                            SkImageInfo* requestedInfo = nullptr) { | 
 |     const SkImageInfo info = SkImageInfo::MakeN32(10, 10, at); | 
 |     if (requestedInfo) { | 
 |         *requestedInfo = info; | 
 |     } | 
 |     return SkSurface::MakeRenderTarget(rContext, skgpu::Budgeted::kNo, info); | 
 | } | 
 | static sk_sp<SkSurface> create_gpu_scratch_surface(GrRecordingContext* rContext, | 
 |                                                    SkAlphaType at = kPremul_SkAlphaType, | 
 |                                                    SkImageInfo* requestedInfo = nullptr) { | 
 |     const SkImageInfo info = SkImageInfo::MakeN32(10, 10, at); | 
 |     if (requestedInfo) { | 
 |         *requestedInfo = info; | 
 |     } | 
 |     return SkSurface::MakeRenderTarget(rContext, skgpu::Budgeted::kYes, info); | 
 | } | 
 |  | 
 | DEF_TEST(SurfaceEmpty, reporter) { | 
 |     const SkImageInfo info = SkImageInfo::Make(0, 0, kN32_SkColorType, kPremul_SkAlphaType); | 
 |     REPORTER_ASSERT(reporter, nullptr == SkSurface::MakeRaster(info)); | 
 |     REPORTER_ASSERT(reporter, nullptr == SkSurface::MakeRasterDirect(info, nullptr, 0)); | 
 |  | 
 | } | 
 | DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(SurfaceEmpty_Gpu, | 
 |                                        reporter, | 
 |                                        ctxInfo, | 
 |                                        CtsEnforcement::kApiLevel_T) { | 
 |     const SkImageInfo info = SkImageInfo::Make(0, 0, kN32_SkColorType, kPremul_SkAlphaType); | 
 |     REPORTER_ASSERT(reporter, | 
 |                     nullptr == SkSurface::MakeRenderTarget( | 
 |                                        ctxInfo.directContext(), skgpu::Budgeted::kNo, info)); | 
 | } | 
 |  | 
 | DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(GrContext_colorTypeSupportedAsSurface, | 
 |                                        reporter, | 
 |                                        ctxInfo, | 
 |                                        CtsEnforcement::kApiLevel_T) { | 
 |     auto context = ctxInfo.directContext(); | 
 |  | 
 |     for (int ct = 0; ct < kLastEnum_SkColorType; ++ct) { | 
 |         static constexpr int kSize = 10; | 
 |  | 
 |         SkColorType colorType = static_cast<SkColorType>(ct); | 
 |         auto info = SkImageInfo::Make(kSize, kSize, colorType, kOpaque_SkAlphaType, nullptr); | 
 |  | 
 |         { | 
 |             bool can = context->colorTypeSupportedAsSurface(colorType); | 
 |             auto surf = | 
 |                     SkSurface::MakeRenderTarget(context, skgpu::Budgeted::kYes, info, 1, nullptr); | 
 |             REPORTER_ASSERT(reporter, can == SkToBool(surf), "ct: %d, can: %d, surf: %d", | 
 |                             colorType, can, SkToBool(surf)); | 
 |  | 
 |             surf = sk_gpu_test::MakeBackendTextureSurface(context, | 
 |                                                           {kSize, kSize}, | 
 |                                                           kTopLeft_GrSurfaceOrigin, | 
 |                                                           /*sample cnt*/ 1, | 
 |                                                           colorType); | 
 |             REPORTER_ASSERT(reporter, can == SkToBool(surf), "ct: %d, can: %d, surf: %d", | 
 |                             colorType, can, SkToBool(surf)); | 
 |         } | 
 |  | 
 |         // The MSAA test only makes sense if the colorType is renderable to begin with. | 
 |         if (context->colorTypeSupportedAsSurface(colorType)) { | 
 |             static constexpr int kSampleCnt = 2; | 
 |  | 
 |             bool can = context->maxSurfaceSampleCountForColorType(colorType) >= kSampleCnt; | 
 |             auto surf = SkSurface::MakeRenderTarget( | 
 |                     context, skgpu::Budgeted::kYes, info, kSampleCnt, nullptr); | 
 |             REPORTER_ASSERT(reporter, can == SkToBool(surf), "ct: %d, can: %d, surf: %d", | 
 |                             colorType, can, SkToBool(surf)); | 
 |  | 
 |             surf = sk_gpu_test::MakeBackendTextureSurface( | 
 |                     context, {kSize, kSize}, kTopLeft_GrSurfaceOrigin, kSampleCnt, colorType); | 
 |             REPORTER_ASSERT(reporter, can == SkToBool(surf), | 
 |                             "colorTypeSupportedAsSurface:%d, surf:%d, ct:%d", can, SkToBool(surf), | 
 |                             colorType); | 
 |             // Ensure that the sample count stored on the resulting SkSurface is a valid value. | 
 |             if (surf) { | 
 |                 auto rtp = SkCanvasPriv::TopDeviceTargetProxy(surf->getCanvas()); | 
 |                 int storedCnt = rtp->numSamples(); | 
 |                 const GrBackendFormat& format = rtp->backendFormat(); | 
 |                 int allowedCnt = | 
 |                         context->priv().caps()->getRenderTargetSampleCount(storedCnt, format); | 
 |                 REPORTER_ASSERT(reporter, storedCnt == allowedCnt, | 
 |                                 "Should store an allowed sample count (%d vs %d)", allowedCnt, | 
 |                                 storedCnt); | 
 |             } | 
 |         } | 
 |  | 
 |         for (int sampleCnt : {1, 2}) { | 
 |             auto surf = sk_gpu_test::MakeBackendRenderTargetSurface(context, | 
 |                                                                     {16, 16}, | 
 |                                                                     kTopLeft_GrSurfaceOrigin, | 
 |                                                                     sampleCnt, | 
 |                                                                     colorType); | 
 |             bool can = context->colorTypeSupportedAsSurface(colorType) && | 
 |                        context->maxSurfaceSampleCountForColorType(colorType) >= sampleCnt; | 
 |             if (!surf && can && colorType == kBGRA_8888_SkColorType && sampleCnt > 1 && | 
 |                 context->backend() == GrBackendApi::kOpenGL) { | 
 |                 // This is an execeptional case. On iOS GLES we support MSAA BGRA for internally- | 
 |                 // created render targets by using a MSAA RGBA8 renderbuffer that resolves to a | 
 |                 // BGRA8 texture. However, the GL_APPLE_texture_format_BGRA8888 extension does not | 
 |                 // allow creation of BGRA8 renderbuffers and we don't support multisampled textures. | 
 |                 // So this is expected to fail. As of 10/5/2020 it actually seems to work to create | 
 |                 // a MSAA BGRA8 renderbuffer (at least in the simulator) but we don't want to rely | 
 |                 // on this undocumented behavior. | 
 |                 continue; | 
 |             } | 
 |             REPORTER_ASSERT(reporter, can == SkToBool(surf), "ct: %d, sc: %d, can: %d, surf: %d", | 
 |                             colorType, sampleCnt, can, SkToBool(surf)); | 
 |             if (surf) { | 
 |                 auto rtp = SkCanvasPriv::TopDeviceTargetProxy(surf->getCanvas()); | 
 |                 int storedCnt = rtp->numSamples(); | 
 |                 const GrBackendFormat& backendFormat = rtp->backendFormat(); | 
 |                 int allowedCnt = context->priv().caps()->getRenderTargetSampleCount(storedCnt, | 
 |                                                                                     backendFormat); | 
 |                 REPORTER_ASSERT(reporter, storedCnt == allowedCnt, | 
 |                                 "Should store an allowed sample count (%d vs %d)", allowedCnt, | 
 |                                 storedCnt); | 
 |             } | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(GrContext_maxSurfaceSamplesForColorType, | 
 |                                        reporter, | 
 |                                        ctxInfo, | 
 |                                        CtsEnforcement::kApiLevel_T) { | 
 |     auto context = ctxInfo.directContext(); | 
 |  | 
 |     static constexpr int kSize = 10; | 
 |  | 
 |     for (int ct = 0; ct < kLastEnum_SkColorType; ++ct) { | 
 |  | 
 |         SkColorType colorType = static_cast<SkColorType>(ct); | 
 |         int maxSampleCnt = context->maxSurfaceSampleCountForColorType(colorType); | 
 |         if (!maxSampleCnt) { | 
 |             continue; | 
 |         } | 
 |         if (!context->colorTypeSupportedAsSurface(colorType)) { | 
 |             continue; | 
 |         } | 
 |  | 
 |         auto info = SkImageInfo::Make(kSize, kSize, colorType, kOpaque_SkAlphaType, nullptr); | 
 |         auto surf = sk_gpu_test::MakeBackendTextureSurface( | 
 |                 context, info, kTopLeft_GrSurfaceOrigin, maxSampleCnt); | 
 |         if (!surf) { | 
 |             ERRORF(reporter, "Could not make surface of color type %d.", colorType); | 
 |             continue; | 
 |         } | 
 |         int sampleCnt = ((SkSurface_Ganesh*)(surf.get()))->getDevice()->targetProxy()->numSamples(); | 
 |         REPORTER_ASSERT(reporter, sampleCnt == maxSampleCnt, "Exected: %d, actual: %d", | 
 |                         maxSampleCnt, sampleCnt); | 
 |     } | 
 | } | 
 |  | 
 | static void test_canvas_peek(skiatest::Reporter* reporter, | 
 |                              sk_sp<SkSurface>& surface, | 
 |                              const SkImageInfo& requestInfo, | 
 |                              bool expectPeekSuccess) { | 
 |     const SkColor color = SK_ColorRED; | 
 |     const SkPMColor pmcolor = SkPreMultiplyColor(color); | 
 |     surface->getCanvas()->clear(color); | 
 |  | 
 |     SkPixmap pmap; | 
 |     bool success = surface->getCanvas()->peekPixels(&pmap); | 
 |     REPORTER_ASSERT(reporter, expectPeekSuccess == success); | 
 |  | 
 |     SkPixmap pmap2; | 
 |     const void* addr2 = surface->peekPixels(&pmap2) ? pmap2.addr() : nullptr; | 
 |  | 
 |     if (success) { | 
 |         REPORTER_ASSERT(reporter, requestInfo == pmap.info()); | 
 |         REPORTER_ASSERT(reporter, requestInfo.minRowBytes() <= pmap.rowBytes()); | 
 |         REPORTER_ASSERT(reporter, pmcolor == *pmap.addr32()); | 
 |  | 
 |         REPORTER_ASSERT(reporter, pmap.addr() == pmap2.addr()); | 
 |         REPORTER_ASSERT(reporter, pmap.info() == pmap2.info()); | 
 |         REPORTER_ASSERT(reporter, pmap.rowBytes() == pmap2.rowBytes()); | 
 |     } else { | 
 |         REPORTER_ASSERT(reporter, nullptr == addr2); | 
 |     } | 
 | } | 
 | DEF_TEST(SurfaceCanvasPeek, reporter) { | 
 |     for (auto& surface_func : { &create_surface, &create_direct_surface }) { | 
 |         SkImageInfo requestInfo; | 
 |         auto surface(surface_func(kPremul_SkAlphaType, &requestInfo)); | 
 |         test_canvas_peek(reporter, surface, requestInfo, true); | 
 |     } | 
 | } | 
 | DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(SurfaceCanvasPeek_Gpu, | 
 |                                        reporter, | 
 |                                        ctxInfo, | 
 |                                        CtsEnforcement::kApiLevel_T) { | 
 |     for (auto& surface_func : { &create_gpu_surface, &create_gpu_scratch_surface }) { | 
 |         SkImageInfo requestInfo; | 
 |         auto surface(surface_func(ctxInfo.directContext(), kPremul_SkAlphaType, &requestInfo)); | 
 |         test_canvas_peek(reporter, surface, requestInfo, false); | 
 |     } | 
 | } | 
 |  | 
 | static void test_snapshot_alphatype(skiatest::Reporter* reporter, const sk_sp<SkSurface>& surface, | 
 |                                     SkAlphaType expectedAlphaType) { | 
 |     REPORTER_ASSERT(reporter, surface); | 
 |     if (surface) { | 
 |         sk_sp<SkImage> image(surface->makeImageSnapshot()); | 
 |         REPORTER_ASSERT(reporter, image); | 
 |         if (image) { | 
 |             REPORTER_ASSERT(reporter, image->alphaType() == expectedAlphaType); | 
 |         } | 
 |     } | 
 | } | 
 | DEF_TEST(SurfaceSnapshotAlphaType, reporter) { | 
 |     for (auto& surface_func : { &create_surface, &create_direct_surface }) { | 
 |         for (auto& at: { kOpaque_SkAlphaType, kPremul_SkAlphaType, kUnpremul_SkAlphaType }) { | 
 |             auto surface(surface_func(at, nullptr)); | 
 |             test_snapshot_alphatype(reporter, surface, at); | 
 |         } | 
 |     } | 
 | } | 
 | DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(SurfaceSnapshotAlphaType_Gpu, | 
 |                                        reporter, | 
 |                                        ctxInfo, | 
 |                                        CtsEnforcement::kApiLevel_T) { | 
 |     for (auto& surface_func : { &create_gpu_surface, &create_gpu_scratch_surface }) { | 
 |         // GPU doesn't support creating unpremul surfaces, so only test opaque + premul | 
 |         for (auto& at : { kOpaque_SkAlphaType, kPremul_SkAlphaType }) { | 
 |             auto surface(surface_func(ctxInfo.directContext(), at, nullptr)); | 
 |             test_snapshot_alphatype(reporter, surface, at); | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | static void test_backend_texture_access_copy_on_write( | 
 |     skiatest::Reporter* reporter, SkSurface* surface, SkSurface::BackendHandleAccess access) { | 
 |     GrBackendTexture tex1 = surface->getBackendTexture(access); | 
 |     sk_sp<SkImage> snap1(surface->makeImageSnapshot()); | 
 |  | 
 |     GrBackendTexture tex2 = surface->getBackendTexture(access); | 
 |     sk_sp<SkImage> snap2(surface->makeImageSnapshot()); | 
 |  | 
 |     // If the access mode triggers CoW, then the backend objects should reflect it. | 
 |     REPORTER_ASSERT(reporter, GrBackendTexture::TestingOnly_Equals(tex1, tex2) == (snap1 == snap2)); | 
 | } | 
 |  | 
 | static void test_backend_rendertarget_access_copy_on_write( | 
 |     skiatest::Reporter* reporter, SkSurface* surface, SkSurface::BackendHandleAccess access) { | 
 |     GrBackendRenderTarget rt1 = surface->getBackendRenderTarget(access); | 
 |     sk_sp<SkImage> snap1(surface->makeImageSnapshot()); | 
 |  | 
 |     GrBackendRenderTarget rt2 = surface->getBackendRenderTarget(access); | 
 |     sk_sp<SkImage> snap2(surface->makeImageSnapshot()); | 
 |  | 
 |     // If the access mode triggers CoW, then the backend objects should reflect it. | 
 |     REPORTER_ASSERT(reporter, GrBackendRenderTarget::TestingOnly_Equals(rt1, rt2) == | 
 |                               (snap1 == snap2)); | 
 | } | 
 |  | 
 | DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(SurfaceBackendSurfaceAccessCopyOnWrite_Gpu, | 
 |                                        reporter, | 
 |                                        ctxInfo, | 
 |                                        CtsEnforcement::kApiLevel_T) { | 
 |     const SkSurface::BackendHandleAccess accessModes[] = { | 
 |         SkSurface::kFlushRead_BackendHandleAccess, | 
 |         SkSurface::kFlushWrite_BackendHandleAccess, | 
 |         SkSurface::kDiscardWrite_BackendHandleAccess, | 
 |     }; | 
 |  | 
 |     for (auto& surface_func : { &create_gpu_surface, &create_gpu_scratch_surface }) { | 
 |         for (auto& accessMode : accessModes) { | 
 |             { | 
 |                 auto surface(surface_func(ctxInfo.directContext(), kPremul_SkAlphaType, nullptr)); | 
 |                 test_backend_texture_access_copy_on_write(reporter, surface.get(), accessMode); | 
 |             } | 
 |             { | 
 |                 auto surface(surface_func(ctxInfo.directContext(), kPremul_SkAlphaType, nullptr)); | 
 |                 test_backend_rendertarget_access_copy_on_write(reporter, surface.get(), accessMode); | 
 |             } | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | template<typename Type, Type(SkSurface::*func)(SkSurface::BackendHandleAccess)> | 
 | static void test_backend_unique_id(skiatest::Reporter* reporter, SkSurface* surface) { | 
 |     sk_sp<SkImage> image0(surface->makeImageSnapshot()); | 
 |  | 
 |     Type obj = (surface->*func)(SkSurface::kFlushRead_BackendHandleAccess); | 
 |     REPORTER_ASSERT(reporter, obj.isValid()); | 
 |     sk_sp<SkImage> image1(surface->makeImageSnapshot()); | 
 |     // just read access should not affect the snapshot | 
 |     REPORTER_ASSERT(reporter, image0->uniqueID() == image1->uniqueID()); | 
 |  | 
 |     obj = (surface->*func)(SkSurface::kFlushWrite_BackendHandleAccess); | 
 |     REPORTER_ASSERT(reporter, obj.isValid()); | 
 |     sk_sp<SkImage> image2(surface->makeImageSnapshot()); | 
 |     // expect a new image, since we claimed we would write | 
 |     REPORTER_ASSERT(reporter, image0->uniqueID() != image2->uniqueID()); | 
 |  | 
 |     obj = (surface->*func)(SkSurface::kDiscardWrite_BackendHandleAccess); | 
 |     REPORTER_ASSERT(reporter, obj.isValid()); | 
 |     sk_sp<SkImage> image3(surface->makeImageSnapshot()); | 
 |     // expect a new(er) image, since we claimed we would write | 
 |     REPORTER_ASSERT(reporter, image0->uniqueID() != image3->uniqueID()); | 
 |     REPORTER_ASSERT(reporter, image2->uniqueID() != image3->uniqueID()); | 
 | } | 
 |  | 
 | // No CPU test. | 
 | DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(SurfaceBackendHandleAccessIDs_Gpu, | 
 |                                        reporter, | 
 |                                        ctxInfo, | 
 |                                        CtsEnforcement::kApiLevel_T) { | 
 |     for (auto& surface_func : { &create_gpu_surface, &create_gpu_scratch_surface }) { | 
 |         { | 
 |             auto surface(surface_func(ctxInfo.directContext(), kPremul_SkAlphaType, nullptr)); | 
 |             test_backend_unique_id<GrBackendTexture, &SkSurface::getBackendTexture>(reporter, | 
 |                                                                                     surface.get()); | 
 |         } | 
 |         { | 
 |             auto surface(surface_func(ctxInfo.directContext(), kPremul_SkAlphaType, nullptr)); | 
 |             test_backend_unique_id<GrBackendRenderTarget, &SkSurface::getBackendRenderTarget>( | 
 |                                                                 reporter, surface.get()); | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | // No CPU test. | 
 | DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(SurfaceAbandonPostFlush_Gpu, | 
 |                                        reporter, | 
 |                                        ctxInfo, | 
 |                                        CtsEnforcement::kApiLevel_T) { | 
 |     auto direct = ctxInfo.directContext(); | 
 |     sk_sp<SkSurface> surface = create_gpu_surface(direct, kPremul_SkAlphaType, nullptr); | 
 |     if (!surface) { | 
 |         return; | 
 |     } | 
 |     // This flush can put command buffer refs on the GrGpuResource for the surface. | 
 |     surface->flush(); | 
 |     direct->abandonContext(); | 
 |     // We pass the test if we don't hit any asserts or crashes when the ref on the surface goes away | 
 |     // after we abanonded the context. One thing specifically this checks is to make sure we're | 
 |     // correctly handling the mix of normal refs and command buffer refs, and correctly deleting | 
 |     // the object at the right time. | 
 | } | 
 |  | 
 | DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(SurfaceBackendAccessAbandoned_Gpu, | 
 |                                        reporter, | 
 |                                        ctxInfo, | 
 |                                        CtsEnforcement::kApiLevel_T) { | 
 |     auto dContext = ctxInfo.directContext(); | 
 |     sk_sp<SkSurface> surface = create_gpu_surface(dContext, kPremul_SkAlphaType, nullptr); | 
 |     if (!surface) { | 
 |         return; | 
 |     } | 
 |  | 
 |     GrBackendRenderTarget beRT = | 
 |             surface->getBackendRenderTarget(SkSurface::kFlushRead_BackendHandleAccess); | 
 |     REPORTER_ASSERT(reporter, beRT.isValid()); | 
 |     GrBackendTexture beTex = | 
 |             surface->getBackendTexture(SkSurface::kFlushRead_BackendHandleAccess); | 
 |     REPORTER_ASSERT(reporter, beTex.isValid()); | 
 |  | 
 |     surface->flush(); | 
 |     dContext->abandonContext(); | 
 |  | 
 |     // After abandoning the context none of the backend surfaces should be valid. | 
 |     beRT = surface->getBackendRenderTarget(SkSurface::kFlushRead_BackendHandleAccess); | 
 |     REPORTER_ASSERT(reporter, !beRT.isValid()); | 
 |     beTex = surface->getBackendTexture(SkSurface::kFlushRead_BackendHandleAccess); | 
 |     REPORTER_ASSERT(reporter, !beTex.isValid()); | 
 | } | 
 |  | 
 | // Verify that the right canvas commands trigger a copy on write. | 
 | static void test_copy_on_write(skiatest::Reporter* reporter, SkSurface* surface) { | 
 |     SkCanvas* canvas = surface->getCanvas(); | 
 |  | 
 |     const SkRect testRect = | 
 |         SkRect::MakeXYWH(SkIntToScalar(0), SkIntToScalar(0), | 
 |                          SkIntToScalar(4), SkIntToScalar(5)); | 
 |     SkPath testPath; | 
 |     testPath.addRect(SkRect::MakeXYWH(SkIntToScalar(0), SkIntToScalar(0), | 
 |                                       SkIntToScalar(2), SkIntToScalar(1))); | 
 |  | 
 |     const SkIRect testIRect = SkIRect::MakeXYWH(0, 0, 2, 1); | 
 |  | 
 |     SkRegion testRegion; | 
 |     testRegion.setRect(testIRect); | 
 |  | 
 |  | 
 |     const SkColor testColor = 0x01020304; | 
 |     const SkPaint testPaint; | 
 |     const SkPoint testPoints[3] = { | 
 |         {SkIntToScalar(0), SkIntToScalar(0)}, | 
 |         {SkIntToScalar(2), SkIntToScalar(1)}, | 
 |         {SkIntToScalar(0), SkIntToScalar(2)} | 
 |     }; | 
 |     const size_t testPointCount = 3; | 
 |  | 
 |     SkBitmap testBitmap; | 
 |     testBitmap.allocN32Pixels(10, 10); | 
 |     testBitmap.eraseColor(0); | 
 |  | 
 |     SkRRect testRRect; | 
 |     testRRect.setRectXY(testRect, SK_Scalar1, SK_Scalar1); | 
 |  | 
 |     SkString testText("Hello World"); | 
 |  | 
 | #define EXPECT_COPY_ON_WRITE(command)                               \ | 
 |     {                                                               \ | 
 |         sk_sp<SkImage> imageBefore = surface->makeImageSnapshot();  \ | 
 |         sk_sp<SkImage> aur_before(imageBefore);  /*NOLINT*/         \ | 
 |         canvas-> command ;                                          \ | 
 |         sk_sp<SkImage> imageAfter = surface->makeImageSnapshot();   \ | 
 |         sk_sp<SkImage> aur_after(imageAfter);  /*NOLINT*/           \ | 
 |         REPORTER_ASSERT(reporter, imageBefore != imageAfter);       \ | 
 |     } | 
 |  | 
 |     EXPECT_COPY_ON_WRITE(clear(testColor)) | 
 |     EXPECT_COPY_ON_WRITE(drawPaint(testPaint)) | 
 |     EXPECT_COPY_ON_WRITE(drawPoints(SkCanvas::kPoints_PointMode, testPointCount, testPoints, \ | 
 |         testPaint)) | 
 |     EXPECT_COPY_ON_WRITE(drawOval(testRect, testPaint)) | 
 |     EXPECT_COPY_ON_WRITE(drawRect(testRect, testPaint)) | 
 |     EXPECT_COPY_ON_WRITE(drawRRect(testRRect, testPaint)) | 
 |     EXPECT_COPY_ON_WRITE(drawPath(testPath, testPaint)) | 
 |     EXPECT_COPY_ON_WRITE(drawImage(testBitmap.asImage(), 0, 0)) | 
 |     EXPECT_COPY_ON_WRITE(drawImageRect(testBitmap.asImage(), testRect, SkSamplingOptions())) | 
 |     EXPECT_COPY_ON_WRITE(drawString(testText, 0, 1, SkFont(), testPaint)) | 
 | } | 
 | DEF_TEST(SurfaceCopyOnWrite, reporter) { | 
 |     test_copy_on_write(reporter, create_surface().get()); | 
 | } | 
 | DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(SurfaceCopyOnWrite_Gpu, | 
 |                                        reporter, | 
 |                                        ctxInfo, | 
 |                                        CtsEnforcement::kApiLevel_T) { | 
 |     for (auto& surface_func : { &create_gpu_surface, &create_gpu_scratch_surface }) { | 
 |         auto surface(surface_func(ctxInfo.directContext(), kPremul_SkAlphaType, nullptr)); | 
 |         test_copy_on_write(reporter, surface.get()); | 
 |     } | 
 | } | 
 |  | 
 | static void test_writable_after_snapshot_release(skiatest::Reporter* reporter, | 
 |                                                  SkSurface* surface) { | 
 |     // This test succeeds by not triggering an assertion. | 
 |     // The test verifies that the surface remains writable (usable) after | 
 |     // acquiring and releasing a snapshot without triggering a copy on write. | 
 |     SkCanvas* canvas = surface->getCanvas(); | 
 |     canvas->clear(1); | 
 |     surface->makeImageSnapshot();  // Create and destroy SkImage | 
 |     canvas->clear(2);  // Must not assert internally | 
 | } | 
 | DEF_TEST(SurfaceWriteableAfterSnapshotRelease, reporter) { | 
 |     test_writable_after_snapshot_release(reporter, create_surface().get()); | 
 | } | 
 | DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(SurfaceWriteableAfterSnapshotRelease_Gpu, | 
 |                                        reporter, | 
 |                                        ctxInfo, | 
 |                                        CtsEnforcement::kApiLevel_T) { | 
 |     for (auto& surface_func : { &create_gpu_surface, &create_gpu_scratch_surface }) { | 
 |         auto surface(surface_func(ctxInfo.directContext(), kPremul_SkAlphaType, nullptr)); | 
 |         test_writable_after_snapshot_release(reporter, surface.get()); | 
 |     } | 
 | } | 
 |  | 
 | static void test_crbug263329(skiatest::Reporter* reporter, | 
 |                              SkSurface* surface1, | 
 |                              SkSurface* surface2) { | 
 |     // This is a regression test for crbug.com/263329 | 
 |     // Bug was caused by onCopyOnWrite releasing the old surface texture | 
 |     // back to the scratch texture pool even though the texture is used | 
 |     // by and active SkImage_Ganesh. | 
 |     SkCanvas* canvas1 = surface1->getCanvas(); | 
 |     SkCanvas* canvas2 = surface2->getCanvas(); | 
 |     canvas1->clear(1); | 
 |     sk_sp<SkImage> image1(surface1->makeImageSnapshot()); | 
 |     // Trigger copy on write, new backing is a scratch texture | 
 |     canvas1->clear(2); | 
 |     sk_sp<SkImage> image2(surface1->makeImageSnapshot()); | 
 |     // Trigger copy on write, old backing should not be returned to scratch | 
 |     // pool because it is held by image2 | 
 |     canvas1->clear(3); | 
 |  | 
 |     canvas2->clear(4); | 
 |     sk_sp<SkImage> image3(surface2->makeImageSnapshot()); | 
 |     // Trigger copy on write on surface2. The new backing store should not | 
 |     // be recycling a texture that is held by an existing image. | 
 |     canvas2->clear(5); | 
 |     sk_sp<SkImage> image4(surface2->makeImageSnapshot()); | 
 |  | 
 |     auto imageProxy = [ctx = surface1->recordingContext()](SkImage* img) { | 
 |         GrTextureProxy* proxy = sk_gpu_test::GetTextureImageProxy(img, ctx); | 
 |         SkASSERT(proxy); | 
 |         return proxy; | 
 |     }; | 
 |  | 
 |     REPORTER_ASSERT(reporter, imageProxy(image4.get()) != imageProxy(image3.get())); | 
 |     // The following assertion checks crbug.com/263329 | 
 |     REPORTER_ASSERT(reporter, imageProxy(image4.get()) != imageProxy(image2.get())); | 
 |     REPORTER_ASSERT(reporter, imageProxy(image4.get()) != imageProxy(image1.get())); | 
 |     REPORTER_ASSERT(reporter, imageProxy(image3.get()) != imageProxy(image2.get())); | 
 |     REPORTER_ASSERT(reporter, imageProxy(image3.get()) != imageProxy(image1.get())); | 
 |     REPORTER_ASSERT(reporter, imageProxy(image2.get()) != imageProxy(image1.get())); | 
 | } | 
 | DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(SurfaceCRBug263329_Gpu, | 
 |                                        reporter, | 
 |                                        ctxInfo, | 
 |                                        CtsEnforcement::kApiLevel_T) { | 
 |     for (auto& surface_func : { &create_gpu_surface, &create_gpu_scratch_surface }) { | 
 |         auto surface1(surface_func(ctxInfo.directContext(), kPremul_SkAlphaType, nullptr)); | 
 |         auto surface2(surface_func(ctxInfo.directContext(), kPremul_SkAlphaType, nullptr)); | 
 |         test_crbug263329(reporter, surface1.get(), surface2.get()); | 
 |     } | 
 | } | 
 |  | 
 | DEF_TEST(SurfaceGetTexture, reporter) { | 
 |     auto surface(create_surface()); | 
 |     sk_sp<SkImage> image(surface->makeImageSnapshot()); | 
 |     REPORTER_ASSERT(reporter, !as_IB(image)->isTextureBacked()); | 
 |     surface->notifyContentWillChange(SkSurface::kDiscard_ContentChangeMode); | 
 |     REPORTER_ASSERT(reporter, !as_IB(image)->isTextureBacked()); | 
 | } | 
 | DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(SurfacepeekTexture_Gpu, | 
 |                                        reporter, | 
 |                                        ctxInfo, | 
 |                                        CtsEnforcement::kApiLevel_T) { | 
 |     for (auto& surface_func : { &create_gpu_surface, &create_gpu_scratch_surface }) { | 
 |         auto surface(surface_func(ctxInfo.directContext(), kPremul_SkAlphaType, nullptr)); | 
 |         sk_sp<SkImage> image(surface->makeImageSnapshot()); | 
 |  | 
 |         REPORTER_ASSERT(reporter, as_IB(image)->isTextureBacked()); | 
 |         GrBackendTexture backendTex = image->getBackendTexture(false); | 
 |         REPORTER_ASSERT(reporter, backendTex.isValid()); | 
 |         surface->notifyContentWillChange(SkSurface::kDiscard_ContentChangeMode); | 
 |         REPORTER_ASSERT(reporter, as_IB(image)->isTextureBacked()); | 
 |         GrBackendTexture backendTex2 = image->getBackendTexture(false); | 
 |         REPORTER_ASSERT(reporter, GrBackendTexture::TestingOnly_Equals(backendTex, backendTex2)); | 
 |     } | 
 | } | 
 |  | 
 | static skgpu::Budgeted is_budgeted(const sk_sp<SkSurface>& surf) { | 
 |     SkSurface_Ganesh* gsurf = (SkSurface_Ganesh*)surf.get(); | 
 |  | 
 |     GrRenderTargetProxy* proxy = gsurf->getDevice()->targetProxy(); | 
 |     return proxy->isBudgeted(); | 
 | } | 
 |  | 
 | static skgpu::Budgeted is_budgeted(SkImage* image, GrRecordingContext* rc) { | 
 |     return sk_gpu_test::GetTextureImageProxy(image, rc)->isBudgeted(); | 
 | } | 
 |  | 
 | DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(SurfaceBudget, | 
 |                                        reporter, | 
 |                                        ctxInfo, | 
 |                                        CtsEnforcement::kApiLevel_T) { | 
 |     SkImageInfo info = SkImageInfo::MakeN32Premul(8,8); | 
 |     GrDirectContext* dContext = ctxInfo.directContext(); | 
 |     for (auto budgeted : {skgpu::Budgeted::kNo, skgpu::Budgeted::kYes}) { | 
 |         auto surface(SkSurface::MakeRenderTarget(dContext, budgeted, info)); | 
 |         SkASSERT(surface); | 
 |         REPORTER_ASSERT(reporter, budgeted == is_budgeted(surface)); | 
 |  | 
 |         sk_sp<SkImage> image(surface->makeImageSnapshot()); | 
 |  | 
 |         // Initially the image shares a texture with the surface, and the | 
 |         // the budgets should always match. | 
 |         REPORTER_ASSERT(reporter, budgeted == is_budgeted(surface)); | 
 |         REPORTER_ASSERT(reporter, budgeted == is_budgeted(image.get(), dContext)); | 
 |  | 
 |         // Now trigger copy-on-write | 
 |         surface->getCanvas()->clear(SK_ColorBLUE); | 
 |  | 
 |         // They don't share a texture anymore but the budgets should still match. | 
 |         REPORTER_ASSERT(reporter, budgeted == is_budgeted(surface)); | 
 |         REPORTER_ASSERT(reporter, budgeted == is_budgeted(image.get(), dContext)); | 
 |     } | 
 | } | 
 |  | 
 | static void test_no_canvas1(skiatest::Reporter* reporter, | 
 |                             SkSurface* surface, | 
 |                             SkSurface::ContentChangeMode mode) { | 
 |     // Test passes by not asserting | 
 |     surface->notifyContentWillChange(mode); | 
 | } | 
 | static void test_no_canvas2(skiatest::Reporter* reporter, | 
 |                             SkSurface* surface, | 
 |                             SkSurface::ContentChangeMode mode) { | 
 |     // Verifies the robustness of SkSurface for handling use cases where calls | 
 |     // are made before a canvas is created. | 
 |     sk_sp<SkImage> image1 = surface->makeImageSnapshot(); | 
 |     sk_sp<SkImage> aur_image1(image1);  // NOLINT(performance-unnecessary-copy-initialization) | 
 |     surface->notifyContentWillChange(mode); | 
 |     sk_sp<SkImage> image2 = surface->makeImageSnapshot(); | 
 |     sk_sp<SkImage> aur_image2(image2);  // NOLINT(performance-unnecessary-copy-initialization) | 
 |     REPORTER_ASSERT(reporter, image1 != image2); | 
 | } | 
 | DEF_TEST(SurfaceNoCanvas, reporter) { | 
 |     SkSurface::ContentChangeMode modes[] = | 
 |             { SkSurface::kDiscard_ContentChangeMode, SkSurface::kRetain_ContentChangeMode}; | 
 |     for (auto& test_func : { &test_no_canvas1, &test_no_canvas2 }) { | 
 |         for (auto& mode : modes) { | 
 |             test_func(reporter, create_surface().get(), mode); | 
 |         } | 
 |     } | 
 | } | 
 | DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(SurfaceNoCanvas_Gpu, | 
 |                                        reporter, | 
 |                                        ctxInfo, | 
 |                                        CtsEnforcement::kApiLevel_T) { | 
 |     SkSurface::ContentChangeMode modes[] = | 
 |             { SkSurface::kDiscard_ContentChangeMode, SkSurface::kRetain_ContentChangeMode}; | 
 |     for (auto& surface_func : { &create_gpu_surface, &create_gpu_scratch_surface }) { | 
 |         for (auto& test_func : { &test_no_canvas1, &test_no_canvas2 }) { | 
 |             for (auto& mode : modes) { | 
 |                 auto surface(surface_func(ctxInfo.directContext(), kPremul_SkAlphaType, nullptr)); | 
 |                 test_func(reporter, surface.get(), mode); | 
 |             } | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | static void check_rowbytes_remain_consistent(SkSurface* surface, skiatest::Reporter* reporter) { | 
 |     SkPixmap surfacePM; | 
 |     REPORTER_ASSERT(reporter, surface->peekPixels(&surfacePM)); | 
 |  | 
 |     sk_sp<SkImage> image(surface->makeImageSnapshot()); | 
 |     SkPixmap pm; | 
 |     REPORTER_ASSERT(reporter, image->peekPixels(&pm)); | 
 |  | 
 |     REPORTER_ASSERT(reporter, surfacePM.rowBytes() == pm.rowBytes()); | 
 |  | 
 |     // trigger a copy-on-write | 
 |     surface->getCanvas()->drawPaint(SkPaint()); | 
 |     sk_sp<SkImage> image2(surface->makeImageSnapshot()); | 
 |     REPORTER_ASSERT(reporter, image->uniqueID() != image2->uniqueID()); | 
 |  | 
 |     SkPixmap pm2; | 
 |     REPORTER_ASSERT(reporter, image2->peekPixels(&pm2)); | 
 |     REPORTER_ASSERT(reporter, pm2.rowBytes() == pm.rowBytes()); | 
 | } | 
 |  | 
 | DEF_TEST(surface_rowbytes, reporter) { | 
 |     const SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100); | 
 |  | 
 |     auto surf0(SkSurface::MakeRaster(info)); | 
 |     check_rowbytes_remain_consistent(surf0.get(), reporter); | 
 |  | 
 |     // specify a larger rowbytes | 
 |     auto surf1(SkSurface::MakeRaster(info, 500, nullptr)); | 
 |     check_rowbytes_remain_consistent(surf1.get(), reporter); | 
 |  | 
 |     // Try some illegal rowByte values | 
 |     auto s = SkSurface::MakeRaster(info, 396, nullptr);    // needs to be at least 400 | 
 |     REPORTER_ASSERT(reporter, nullptr == s); | 
 |     s = SkSurface::MakeRaster(info, std::numeric_limits<size_t>::max(), nullptr); | 
 |     REPORTER_ASSERT(reporter, nullptr == s); | 
 | } | 
 |  | 
 | DEF_TEST(surface_raster_zeroinitialized, reporter) { | 
 |     sk_sp<SkSurface> s(SkSurface::MakeRasterN32Premul(100, 100)); | 
 |     SkPixmap pixmap; | 
 |     REPORTER_ASSERT(reporter, s->peekPixels(&pixmap)); | 
 |  | 
 |     for (int i = 0; i < pixmap.info().width(); ++i) { | 
 |         for (int j = 0; j < pixmap.info().height(); ++j) { | 
 |             REPORTER_ASSERT(reporter, *pixmap.addr32(i, j) == 0); | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | static sk_sp<SkSurface> create_gpu_surface_backend_texture(GrDirectContext* dContext, | 
 |                                                            int sampleCnt, | 
 |                                                            const SkColor4f& color) { | 
 |     // On Pixel and Pixel2XL's with Adreno 530 and 540s, setting width and height to 10s reliably | 
 |     // triggers what appears to be a driver race condition where the 10x10 surface from the | 
 |     // OverdrawSurface_gpu test is reused(?) for this surface created by the SurfacePartialDraw_gpu | 
 |     // test. | 
 |     // | 
 |     // Immediately after creation of this surface, readback shows the correct initial solid color. | 
 |     // However, sometime before content is rendered into the upper half of the surface, the driver | 
 |     // presumably cleans up the OverdrawSurface_gpu's memory which corrupts this color buffer. The | 
 |     // top half of the surface is fine after the partially-covering rectangle is drawn, but the | 
 |     // untouched bottom half contains random pixel values that trigger asserts in the | 
 |     // SurfacePartialDraw_gpu test for no longer matching the initial color. Running the | 
 |     // SurfacePartialDraw_gpu test without the OverdrawSurface_gpu test completes successfully. | 
 |     // | 
 |     // Requesting a much larger backend texture size seems to prevent it from reusing the same | 
 |     // memory and avoids the issue. | 
 |     const SkISize kSize = CurrentTestHarnessIsSkQP() ? SkISize{10, 10} : SkISize{100, 100}; | 
 |  | 
 |     auto surf = sk_gpu_test::MakeBackendTextureSurface(dContext, | 
 |                                                        kSize, | 
 |                                                        kTopLeft_GrSurfaceOrigin, | 
 |                                                        sampleCnt, | 
 |                                                        kRGBA_8888_SkColorType); | 
 |     if (!surf) { | 
 |         return nullptr; | 
 |     } | 
 |     surf->getCanvas()->clear(color); | 
 |     return surf; | 
 | } | 
 |  | 
 | static bool supports_readpixels(const GrCaps* caps, SkSurface* surface) { | 
 |     auto surfaceGpu = static_cast<SkSurface_Ganesh*>(surface); | 
 |     GrRenderTarget* rt = surfaceGpu->getDevice()->targetProxy()->peekRenderTarget(); | 
 |     if (!rt) { | 
 |         return false; | 
 |     } | 
 |     return caps->surfaceSupportsReadPixels(rt) == GrCaps::SurfaceReadPixelsSupport::kSupported; | 
 | } | 
 |  | 
 | static sk_sp<SkSurface> create_gpu_surface_backend_render_target(GrDirectContext* dContext, | 
 |                                                                  int sampleCnt, | 
 |                                                                  const SkColor4f& color) { | 
 |     const int kWidth = 10; | 
 |     const int kHeight = 10; | 
 |  | 
 |     auto surf = sk_gpu_test::MakeBackendRenderTargetSurface(dContext, | 
 |                                                             {kWidth, kHeight}, | 
 |                                                             kTopLeft_GrSurfaceOrigin, | 
 |                                                             sampleCnt, | 
 |                                                             kRGBA_8888_SkColorType); | 
 |     if (!surf) { | 
 |         return nullptr; | 
 |     } | 
 |     surf->getCanvas()->clear(color); | 
 |     return surf; | 
 | } | 
 |  | 
 | static void test_surface_context_clear(skiatest::Reporter* reporter, | 
 |                                        GrDirectContext* dContext, | 
 |                                        skgpu::ganesh::SurfaceContext* surfaceContext, | 
 |                                        uint32_t expectedValue) { | 
 |     int w = surfaceContext->width(); | 
 |     int h = surfaceContext->height(); | 
 |  | 
 |     SkImageInfo ii = SkImageInfo::Make(w, h, kRGBA_8888_SkColorType, kPremul_SkAlphaType); | 
 |  | 
 |     SkAutoPixmapStorage readback; | 
 |     readback.alloc(ii); | 
 |  | 
 |     readback.erase(~expectedValue); | 
 |     surfaceContext->readPixels(dContext, readback, {0, 0}); | 
 |     for (int y = 0; y < h; ++y) { | 
 |         for (int x = 0; x < w; ++x) { | 
 |             uint32_t pixel = readback.addr32()[y * w + x]; | 
 |             if (pixel != expectedValue) { | 
 |                 SkString msg; | 
 |                 if (expectedValue) { | 
 |                     msg = "SkSurface should have left render target unmodified"; | 
 |                 } else { | 
 |                     msg = "SkSurface should have cleared the render target"; | 
 |                 } | 
 |                 ERRORF(reporter, | 
 |                        "%s but read 0x%08x (instead of 0x%08x) at %x,%d", msg.c_str(), pixel, | 
 |                        expectedValue, x, y); | 
 |                 return; | 
 |             } | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | DEF_GANESH_TEST_FOR_GL_RENDERING_CONTEXTS(SurfaceClear_Gpu, | 
 |                                           reporter, | 
 |                                           ctxInfo, | 
 |                                           CtsEnforcement::kApiLevel_T) { | 
 |     auto dContext = ctxInfo.directContext(); | 
 |     // Snaps an image from a surface and then makes a SurfaceContext from the image's texture. | 
 |     auto makeImageSurfaceContext = [dContext](SkSurface* surface) { | 
 |         sk_sp<SkImage> i(surface->makeImageSnapshot()); | 
 |         auto [view, ct] = skgpu::ganesh::AsView(dContext, i, GrMipmapped::kNo); | 
 |         GrColorInfo colorInfo(ct, i->alphaType(), i->refColorSpace()); | 
 |         return dContext->priv().makeSC(view, std::move(colorInfo)); | 
 |     }; | 
 |  | 
 |     // Test that non-wrapped RTs are created clear. | 
 |     for (auto& surface_func : {&create_gpu_surface, &create_gpu_scratch_surface}) { | 
 |         auto surface = surface_func(dContext, kPremul_SkAlphaType, nullptr); | 
 |         if (!surface) { | 
 |             ERRORF(reporter, "Could not create GPU SkSurface."); | 
 |             return; | 
 |         } | 
 |         auto sfc = SkCanvasPriv::TopDeviceSurfaceFillContext(surface->getCanvas()); | 
 |         if (!sfc) { | 
 |             ERRORF(reporter, "Could access surface context of GPU SkSurface."); | 
 |             return; | 
 |         } | 
 |         test_surface_context_clear(reporter, dContext, sfc, 0x0); | 
 |         auto imageSurfaceCtx = makeImageSurfaceContext(surface.get()); | 
 |         test_surface_context_clear(reporter, dContext, imageSurfaceCtx.get(), 0x0); | 
 |     } | 
 |  | 
 |     // Wrapped RTs are *not* supposed to clear (to allow client to partially update a surface). | 
 |     const SkColor4f kOrigColor{.67f, .67f, .67f, 1}; | 
 |     for (auto& surfaceFunc : | 
 |          {&create_gpu_surface_backend_texture, &create_gpu_surface_backend_render_target}) { | 
 |         auto surface = surfaceFunc(dContext, 1, kOrigColor); | 
 |         if (!surface) { | 
 |             ERRORF(reporter, "Could not create GPU SkSurface."); | 
 |             return; | 
 |         } | 
 |         auto sfc = SkCanvasPriv::TopDeviceSurfaceFillContext(surface->getCanvas()); | 
 |         if (!sfc) { | 
 |             ERRORF(reporter, "Could access surface context of GPU SkSurface."); | 
 |             return; | 
 |         } | 
 |         test_surface_context_clear(reporter, dContext, sfc, kOrigColor.toSkColor()); | 
 |         auto imageSurfaceCtx = makeImageSurfaceContext(surface.get()); | 
 |         test_surface_context_clear(reporter, dContext, imageSurfaceCtx.get(), | 
 |                                    kOrigColor.toSkColor()); | 
 |     } | 
 | } | 
 |  | 
 | static void test_surface_draw_partially( | 
 |     skiatest::Reporter* reporter, sk_sp<SkSurface> surface, SkColor origColor) { | 
 |     const int kW = surface->width(); | 
 |     const int kH = surface->height(); | 
 |     SkPaint paint; | 
 |     const SkColor kRectColor = ~origColor | 0xFF000000; | 
 |     paint.setColor(kRectColor); | 
 |     surface->getCanvas()->drawRect(SkRect::MakeIWH(kW, kH/2), paint); | 
 |  | 
 |     // Read back RGBA to avoid format conversions that may not be supported on all platforms. | 
 |     SkImageInfo readInfo = SkImageInfo::Make(kW, kH, kRGBA_8888_SkColorType, kPremul_SkAlphaType); | 
 |  | 
 |     SkAutoPixmapStorage readback; | 
 |     readback.alloc(readInfo); | 
 |  | 
 |     readback.erase(~origColor); | 
 |     REPORTER_ASSERT(reporter, surface->readPixels(readback.info(), readback.writable_addr(), | 
 |                                                   readback.rowBytes(), 0, 0)); | 
 |     bool stop = false; | 
 |  | 
 |     SkPMColor origColorPM = SkPackARGB_as_RGBA(SkColorGetA(origColor), | 
 |                                                SkColorGetR(origColor), | 
 |                                                SkColorGetG(origColor), | 
 |                                                SkColorGetB(origColor)); | 
 |     SkPMColor rectColorPM = SkPackARGB_as_RGBA(SkColorGetA(kRectColor), | 
 |                                                SkColorGetR(kRectColor), | 
 |                                                SkColorGetG(kRectColor), | 
 |                                                SkColorGetB(kRectColor)); | 
 |  | 
 |     for (int y = 0; y < kH/2 && !stop; ++y) { | 
 |        for (int x = 0; x < kW && !stop; ++x) { | 
 |             REPORTER_ASSERT(reporter, rectColorPM == readback.addr32()[x + y * kW]); | 
 |             if (rectColorPM != readback.addr32()[x + y * kW]) { | 
 |                 SkDebugf("--- got [%x] expected [%x], x = %d, y = %d\n", | 
 |                          readback.addr32()[x + y * kW], rectColorPM, x, y); | 
 |                 stop = true; | 
 |             } | 
 |         } | 
 |     } | 
 |     stop = false; | 
 |     for (int y = kH/2; y < kH && !stop; ++y) { | 
 |         for (int x = 0; x < kW && !stop; ++x) { | 
 |             REPORTER_ASSERT(reporter, origColorPM == readback.addr32()[x + y * kW]); | 
 |             if (origColorPM != readback.addr32()[x + y * kW]) { | 
 |                 SkDebugf("--- got [%x] expected [%x], x = %d, y = %d\n", | 
 |                          readback.addr32()[x + y * kW], origColorPM, x, y); | 
 |                 stop = true; | 
 |             } | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(SurfacePartialDraw_Gpu, | 
 |                                        reporter, | 
 |                                        ctxInfo, | 
 |                                        CtsEnforcement::kApiLevel_T) { | 
 |     auto context = ctxInfo.directContext(); | 
 |  | 
 |     static const SkColor4f kOrigColor { 0.667f, 0.733f, 0.8f, 1 }; | 
 |  | 
 |     for (auto& surfaceFunc : | 
 |          {&create_gpu_surface_backend_texture, &create_gpu_surface_backend_render_target}) { | 
 |         // Validate that we can draw to the canvas and that the original texture color is | 
 |         // preserved in pixels that aren't rendered to via the surface. | 
 |         // This works only for non-multisampled case. | 
 |         auto surface = surfaceFunc(context, 1, kOrigColor); | 
 |         if (surface && supports_readpixels(context->priv().caps(), surface.get())) { | 
 |             test_surface_draw_partially(reporter, surface, kOrigColor.toSkColor()); | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | struct ReleaseChecker { | 
 |     ReleaseChecker() : fReleaseCount(0) {} | 
 |     int fReleaseCount; | 
 |     static void Release(void* self) { | 
 |         static_cast<ReleaseChecker*>(self)->fReleaseCount++; | 
 |     } | 
 | }; | 
 |  | 
 | DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(SurfaceWrappedWithRelease_Gpu, | 
 |                                        reporter, | 
 |                                        ctxInfo, | 
 |                                        CtsEnforcement::kApiLevel_T) { | 
 |     const int kWidth = 10; | 
 |     const int kHeight = 10; | 
 |  | 
 |     auto ctx = ctxInfo.directContext(); | 
 |     GrGpu* gpu = ctx->priv().getGpu(); | 
 |  | 
 |     for (bool useTexture : {false, true}) { | 
 |         sk_sp<sk_gpu_test::ManagedBackendTexture> mbet; | 
 |         GrBackendRenderTarget backendRT; | 
 |         sk_sp<SkSurface> surface; | 
 |  | 
 |         ReleaseChecker releaseChecker; | 
 |         GrSurfaceOrigin texOrigin = kBottomLeft_GrSurfaceOrigin; | 
 |  | 
 |         if (useTexture) { | 
 |             SkImageInfo ii = SkImageInfo::Make(kWidth, kHeight, SkColorType::kRGBA_8888_SkColorType, | 
 |                                                kPremul_SkAlphaType); | 
 |             mbet = sk_gpu_test::ManagedBackendTexture::MakeFromInfo(ctx, ii, GrMipmapped::kNo, | 
 |                                                                     GrRenderable::kYes); | 
 |             if (!mbet) { | 
 |                 continue; | 
 |             } | 
 |  | 
 |             surface = SkSurface::MakeFromBackendTexture( | 
 |                     ctx, | 
 |                     mbet->texture(), | 
 |                     texOrigin, | 
 |                     /*sample count*/ 1, | 
 |                     kRGBA_8888_SkColorType, | 
 |                     /*color space*/ nullptr, | 
 |                     /*surface props*/ nullptr, | 
 |                     sk_gpu_test::ManagedBackendTexture::ReleaseProc, | 
 |                     mbet->releaseContext(ReleaseChecker::Release, &releaseChecker)); | 
 |         } else { | 
 |             backendRT = gpu->createTestingOnlyBackendRenderTarget({kWidth, kHeight}, | 
 |                                                                   GrColorType::kRGBA_8888); | 
 |             if (!backendRT.isValid()) { | 
 |                 continue; | 
 |             } | 
 |             surface = SkSurface::MakeFromBackendRenderTarget(ctx, backendRT, texOrigin, | 
 |                                                              kRGBA_8888_SkColorType, | 
 |                                                              nullptr, nullptr, | 
 |                                                              ReleaseChecker::Release, | 
 |                                                              &releaseChecker); | 
 |         } | 
 |         if (!surface) { | 
 |             ERRORF(reporter, "Failed to create surface"); | 
 |             continue; | 
 |         } | 
 |  | 
 |         surface->getCanvas()->clear(SK_ColorRED); | 
 |         surface->flush(); | 
 |         ctx->submit(true); | 
 |  | 
 |         // Now exercise the release proc | 
 |         REPORTER_ASSERT(reporter, 0 == releaseChecker.fReleaseCount); | 
 |         surface.reset(nullptr); // force a release of the surface | 
 |         REPORTER_ASSERT(reporter, 1 == releaseChecker.fReleaseCount); | 
 |  | 
 |         if (!useTexture) { | 
 |             gpu->deleteTestingOnlyBackendRenderTarget(backendRT); | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | DEF_GANESH_TEST_FOR_GL_RENDERING_CONTEXTS(SurfaceAttachStencil_Gpu, | 
 |                                           reporter, | 
 |                                           ctxInfo, | 
 |                                           CtsEnforcement::kApiLevel_T) { | 
 |     auto context = ctxInfo.directContext(); | 
 |     const GrCaps* caps = context->priv().caps(); | 
 |  | 
 |     if (caps->avoidStencilBuffers()) { | 
 |         return; | 
 |     } | 
 |  | 
 |     static const SkColor4f kOrigColor { 0.667f, 0.733f, 0.8f, 1 }; | 
 |  | 
 |     auto resourceProvider = context->priv().resourceProvider(); | 
 |  | 
 |     for (auto& surfaceFunc : | 
 |          {&create_gpu_surface_backend_texture, &create_gpu_surface_backend_render_target}) { | 
 |         for (int sampleCnt : {1, 4, 8}) { | 
 |             auto surface = surfaceFunc(context, sampleCnt, kOrigColor); | 
 |  | 
 |             if (!surface && sampleCnt > 1) { | 
 |                 // Certain platforms don't support MSAA, skip these. | 
 |                 continue; | 
 |             } | 
 |  | 
 |             // Validate that we can attach a stencil buffer to an SkSurface created by either of | 
 |             // our surface functions. | 
 |             auto rtp = SkCanvasPriv::TopDeviceTargetProxy(surface->getCanvas()); | 
 |             GrRenderTarget* rt = rtp->peekRenderTarget(); | 
 |             REPORTER_ASSERT(reporter, | 
 |                             resourceProvider->attachStencilAttachment(rt, rt->numSamples() > 1)); | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(ReplaceSurfaceBackendTexture, | 
 |                                        reporter, | 
 |                                        ctxInfo, | 
 |                                        CtsEnforcement::kApiLevel_T) { | 
 |     auto context = ctxInfo.directContext(); | 
 |  | 
 |     for (int sampleCnt : {1, 2}) { | 
 |         auto ii = SkImageInfo::Make(10, 10, kRGBA_8888_SkColorType, kPremul_SkAlphaType, nullptr); | 
 |         auto mbet1 = sk_gpu_test::ManagedBackendTexture::MakeFromInfo( | 
 |                 context, ii, GrMipmapped::kNo, GrRenderable::kYes); | 
 |         if (!mbet1) { | 
 |             continue; | 
 |         } | 
 |         auto mbet2 = sk_gpu_test::ManagedBackendTexture::MakeFromInfo( | 
 |                 context, ii, GrMipmapped::kNo, GrRenderable::kYes); | 
 |         if (!mbet2) { | 
 |             ERRORF(reporter, "Expected to be able to make second texture"); | 
 |             continue; | 
 |         } | 
 |         auto ii2 = ii.makeWH(8, 8); | 
 |         auto mbet3 = sk_gpu_test::ManagedBackendTexture::MakeFromInfo( | 
 |                 context, ii2, GrMipmapped::kNo, GrRenderable::kYes); | 
 |         GrBackendTexture backendTexture3; | 
 |         if (!mbet3) { | 
 |             ERRORF(reporter, "Couldn't create different sized texture."); | 
 |             continue; | 
 |         } | 
 |  | 
 |         auto surf = SkSurface::MakeFromBackendTexture( | 
 |                 context, mbet1->texture(), kTopLeft_GrSurfaceOrigin, sampleCnt, | 
 |                 kRGBA_8888_SkColorType, ii.refColorSpace(), nullptr); | 
 |         if (!surf) { | 
 |             continue; | 
 |         } | 
 |         surf->getCanvas()->clear(SK_ColorBLUE); | 
 |         // Change matrix, layer, and clip state before swapping out the backing texture. | 
 |         surf->getCanvas()->translate(5, 5); | 
 |         surf->getCanvas()->saveLayer(nullptr, nullptr); | 
 |         surf->getCanvas()->clipRect(SkRect::MakeXYWH(0, 0, 1, 1)); | 
 |         // switch origin while we're at it. | 
 |         bool replaced = surf->replaceBackendTexture(mbet2->texture(), kBottomLeft_GrSurfaceOrigin); | 
 |         REPORTER_ASSERT(reporter, replaced); | 
 |         SkPaint paint; | 
 |         paint.setColor(SK_ColorRED); | 
 |         surf->getCanvas()->drawRect(SkRect::MakeWH(5, 5), paint); | 
 |         surf->getCanvas()->restore(); | 
 |  | 
 |         // Check that the replacement texture got the right color values. | 
 |         SkAutoPixmapStorage pm; | 
 |         pm.alloc(ii); | 
 |         bool bad = !surf->readPixels(pm, 0, 0); | 
 |         REPORTER_ASSERT(reporter, !bad, "Could not read surface."); | 
 |         for (int y = 0; y < ii.height() && !bad; ++y) { | 
 |             for (int x = 0; x < ii.width() && !bad; ++x) { | 
 |                 auto expected = (x == 5 && y == 5) ? 0xFF0000FF : 0xFFFF0000; | 
 |                 auto found = *pm.addr32(x, y); | 
 |                 if (found != expected) { | 
 |                     bad = true; | 
 |                     ERRORF(reporter, "Expected color 0x%08x, found color 0x%08x at %d, %d.", | 
 |                            expected, found, x, y); | 
 |                 } | 
 |             } | 
 |         } | 
 |         // The original texture should still be all blue. | 
 |         surf = SkSurface::MakeFromBackendTexture( | 
 |                 context, mbet1->texture(), kBottomLeft_GrSurfaceOrigin, sampleCnt, | 
 |                 kRGBA_8888_SkColorType, ii.refColorSpace(), nullptr); | 
 |         if (!surf) { | 
 |             ERRORF(reporter, "Could not create second surface."); | 
 |             continue; | 
 |         } | 
 |         bad = !surf->readPixels(pm, 0, 0); | 
 |         REPORTER_ASSERT(reporter, !bad, "Could not read second surface."); | 
 |         for (int y = 0; y < ii.height() && !bad; ++y) { | 
 |             for (int x = 0; x < ii.width() && !bad; ++x) { | 
 |                 auto expected = 0xFFFF0000; | 
 |                 auto found = *pm.addr32(x, y); | 
 |                 if (found != expected) { | 
 |                     bad = true; | 
 |                     ERRORF(reporter, "Expected color 0x%08x, found color 0x%08x at %d, %d.", | 
 |                            expected, found, x, y); | 
 |                 } | 
 |             } | 
 |         } | 
 |  | 
 |         // Can't replace with the same texture | 
 |         REPORTER_ASSERT(reporter, | 
 |                         !surf->replaceBackendTexture(mbet1->texture(), kTopLeft_GrSurfaceOrigin)); | 
 |         // Can't replace with invalid texture | 
 |         REPORTER_ASSERT(reporter, !surf->replaceBackendTexture({}, kTopLeft_GrSurfaceOrigin)); | 
 |         // Can't replace with different size texture. | 
 |         REPORTER_ASSERT(reporter, | 
 |                         !surf->replaceBackendTexture(mbet3->texture(), kTopLeft_GrSurfaceOrigin)); | 
 |         // Can't replace texture of non-wrapped SkSurface. | 
 |         surf = SkSurface::MakeRenderTarget(context, skgpu::Budgeted::kYes, ii, sampleCnt, nullptr); | 
 |         REPORTER_ASSERT(reporter, surf); | 
 |         if (surf) { | 
 |             REPORTER_ASSERT(reporter, !surf->replaceBackendTexture(mbet1->texture(), | 
 |                                                                    kTopLeft_GrSurfaceOrigin)); | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | static void test_overdraw_surface(skiatest::Reporter* r, SkSurface* surface) { | 
 |     SkOverdrawCanvas canvas(surface->getCanvas()); | 
 |     canvas.drawPaint(SkPaint()); | 
 |     sk_sp<SkImage> image = surface->makeImageSnapshot(); | 
 |  | 
 |     SkBitmap bitmap; | 
 |     image->asLegacyBitmap(&bitmap); | 
 |     for (int y = 0; y < 10; y++) { | 
 |         for (int x = 0; x < 10; x++) { | 
 |             REPORTER_ASSERT(r, 1 == SkGetPackedA32(*bitmap.getAddr32(x, y))); | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | DEF_TEST(OverdrawSurface_Raster, r) { | 
 |     sk_sp<SkSurface> surface = create_surface(); | 
 |     test_overdraw_surface(r, surface.get()); | 
 | } | 
 |  | 
 | DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(OverdrawSurface_Gpu, | 
 |                                        r, | 
 |                                        ctxInfo, | 
 |                                        CtsEnforcement::kApiLevel_T) { | 
 |     auto context = ctxInfo.directContext(); | 
 |     sk_sp<SkSurface> surface = create_gpu_surface(context); | 
 |     test_overdraw_surface(r, surface.get()); | 
 | } | 
 |  | 
 | DEF_TEST(Surface_null, r) { | 
 |     REPORTER_ASSERT(r, SkSurface::MakeNull(0, 0) == nullptr); | 
 |  | 
 |     const int w = 37; | 
 |     const int h = 1000; | 
 |     auto surf = SkSurface::MakeNull(w, h); | 
 |     auto canvas = surf->getCanvas(); | 
 |  | 
 |     canvas->drawPaint(SkPaint());   // should not crash, but don't expect anything to draw | 
 |     REPORTER_ASSERT(r, surf->makeImageSnapshot() == nullptr); | 
 | } | 
 |  | 
 | // assert: if a given imageinfo is valid for a surface, then it must be valid for an image | 
 | //         (so the snapshot can succeed) | 
 | DEF_TEST(surface_image_unity, reporter) { | 
 |     auto do_test = [reporter](const SkImageInfo& info) { | 
 |         size_t rowBytes = info.minRowBytes(); | 
 |         auto surf = SkSurface::MakeRaster(info, rowBytes, nullptr); | 
 |         if (surf) { | 
 |             auto img = surf->makeImageSnapshot(); | 
 |             if ((false)) { // change to true to document the differences | 
 |                 if (!img) { | 
 |                     SkDebugf("image failed: [%08X %08X] %14s %s\n", | 
 |                              info.width(), | 
 |                              info.height(), | 
 |                              ToolUtils::colortype_name(info.colorType()), | 
 |                              ToolUtils::alphatype_name(info.alphaType())); | 
 |                     return; | 
 |                 } | 
 |             } | 
 |             REPORTER_ASSERT(reporter, img != nullptr); | 
 |  | 
 |             char tempPixel = 0;    // just need a valid address (not a valid size) | 
 |             SkPixmap pmap = { info, &tempPixel, rowBytes }; | 
 |             img = SkImages::RasterFromPixmap(pmap, nullptr, nullptr); | 
 |             REPORTER_ASSERT(reporter, img != nullptr); | 
 |         } | 
 |     }; | 
 |  | 
 |     const int32_t sizes[] = { -1, 0, 1, 1 << 18 }; | 
 |     for (int cti = 0; cti <= kLastEnum_SkColorType; ++cti) { | 
 |         SkColorType ct = static_cast<SkColorType>(cti); | 
 |         for (int ati = 0; ati <= kLastEnum_SkAlphaType; ++ati) { | 
 |             SkAlphaType at = static_cast<SkAlphaType>(ati); | 
 |             for (int32_t size : sizes) { | 
 |                 do_test(SkImageInfo::Make(1, size, ct, at)); | 
 |                 do_test(SkImageInfo::Make(size, 1, ct, at)); | 
 |             } | 
 |         } | 
 |     } | 
 | } | 
 |  | 
 | DEF_TEST(VMBlitterInfiniteColorShader, r) { | 
 |     // This replicates the underlying problem of oss-fuzz:49391. | 
 |     // Steps: | 
 |     //   - Force the blitter chooser to use SkVM (done here with a runtime blender) | 
 |     //   - Have a paint with no shader (so the blitter tries to construct a color shader from the | 
 |     //     paint color) | 
 |     //   - Have a color filter that, when applied to the paint color, produces a color with a tiny | 
 |     //     (but nonzero) alpha value. This triggers overflow when the filtered color is unpremuled, | 
 |     //     resulting in infinite RGB values. | 
 |     //   - With infinite color, the color-shader factory rejects the color, and returns nullptr, | 
 |     //     breaking the assumptions in the blitter that a shader will - always - be constructed. | 
 |     SkPaint paint; | 
 |  | 
 |     // This ensures that we will use SkVMBlitter | 
 |     paint.setBlender(GetRuntimeBlendForBlendMode(SkBlendMode::kSrc)); | 
 |  | 
 |     // Start with a simple color | 
 |     paint.setColor4f({ 1, 1, 1, 1 }); | 
 |  | 
 |     // Color filter that will set alpha to a tiny value. 1/X is not representable in float. | 
 |     SkColorMatrix cm; | 
 |     cm.setScale(1.0f, 1.0f, 1.0f, 7.4E-40f); | 
 |     paint.setColorFilter(SkColorFilters::Matrix(cm)); | 
 |  | 
 |     // Confirm that our color filter produces infinite RGB when applied to the paint color | 
 |     SkColor4f filtered = | 
 |             paint.getColorFilter()->filterColor4f(paint.getColor4f(), nullptr, nullptr); | 
 |     REPORTER_ASSERT(r, !sk_float_isfinite(filtered.fR)); | 
 |     // ... and that we therefore can't construct a color shader from the result | 
 |     REPORTER_ASSERT(r, !SkShaders::Color(filtered, nullptr)); | 
 |  | 
 |     // Now try to draw this paint. Before the fixing the bug, this would crash (null dereference) | 
 |     auto surface = SkSurface::MakeRasterN32Premul(8, 8); | 
 |     surface->getCanvas()->drawPaint(paint); | 
 | } |