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      1 /*
      2  * Copyright 2013 Google Inc.
      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 <functional>
      9 #include "SkCanvas.h"
     10 #include "SkData.h"
     11 #include "SkDevice.h"
     12 #include "SkImage_Base.h"
     13 #include "SkOverdrawCanvas.h"
     14 #include "SkPath.h"
     15 #include "SkRegion.h"
     16 #include "SkRRect.h"
     17 #include "SkSurface.h"
     18 #include "SkUtils.h"
     19 #include "Test.h"
     20 
     21 #if SK_SUPPORT_GPU
     22 #include <vector>
     23 #include "GrContext.h"
     24 #include "GrContextPriv.h"
     25 #include "GrGpu.h"
     26 #include "GrGpuResourcePriv.h"
     27 #include "GrRenderTargetContext.h"
     28 #include "GrResourceProvider.h"
     29 #include "GrTest.h"
     30 #include "SkGpuDevice.h"
     31 #include "SkImage_Gpu.h"
     32 #include "SkSurface_Gpu.h"
     33 #endif
     34 
     35 #include "sk_tool_utils.h"
     36 
     37 #include <initializer_list>
     38 
     39 static void release_direct_surface_storage(void* pixels, void* context) {
     40     SkASSERT(pixels == context);
     41     sk_free(pixels);
     42 }
     43 static sk_sp<SkSurface> create_surface(SkAlphaType at = kPremul_SkAlphaType,
     44                                        SkImageInfo* requestedInfo = nullptr) {
     45     const SkImageInfo info = SkImageInfo::MakeN32(10, 10, at);
     46     if (requestedInfo) {
     47         *requestedInfo = info;
     48     }
     49     return SkSurface::MakeRaster(info);
     50 }
     51 static sk_sp<SkSurface> create_direct_surface(SkAlphaType at = kPremul_SkAlphaType,
     52                                               SkImageInfo* requestedInfo = nullptr) {
     53     const SkImageInfo info = SkImageInfo::MakeN32(10, 10, at);
     54     if (requestedInfo) {
     55         *requestedInfo = info;
     56     }
     57     const size_t rowBytes = info.minRowBytes();
     58     void* storage = sk_malloc_throw(info.computeByteSize(rowBytes));
     59     return SkSurface::MakeRasterDirectReleaseProc(info, storage, rowBytes,
     60                                                   release_direct_surface_storage,
     61                                                   storage);
     62 }
     63 #if SK_SUPPORT_GPU
     64 static sk_sp<SkSurface> create_gpu_surface(GrContext* context, SkAlphaType at = kPremul_SkAlphaType,
     65                                            SkImageInfo* requestedInfo = nullptr) {
     66     const SkImageInfo info = SkImageInfo::MakeN32(10, 10, at);
     67     if (requestedInfo) {
     68         *requestedInfo = info;
     69     }
     70     return SkSurface::MakeRenderTarget(context, SkBudgeted::kNo, info);
     71 }
     72 static sk_sp<SkSurface> create_gpu_scratch_surface(GrContext* context,
     73                                                    SkAlphaType at = kPremul_SkAlphaType,
     74                                                    SkImageInfo* requestedInfo = nullptr) {
     75     const SkImageInfo info = SkImageInfo::MakeN32(10, 10, at);
     76     if (requestedInfo) {
     77         *requestedInfo = info;
     78     }
     79     return SkSurface::MakeRenderTarget(context, SkBudgeted::kYes, info);
     80 }
     81 #endif
     82 
     83 DEF_TEST(SurfaceEmpty, reporter) {
     84     const SkImageInfo info = SkImageInfo::Make(0, 0, kN32_SkColorType, kPremul_SkAlphaType);
     85     REPORTER_ASSERT(reporter, nullptr == SkSurface::MakeRaster(info));
     86     REPORTER_ASSERT(reporter, nullptr == SkSurface::MakeRasterDirect(info, nullptr, 0));
     87 
     88 }
     89 #if SK_SUPPORT_GPU
     90 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SurfaceEmpty_Gpu, reporter, ctxInfo) {
     91     const SkImageInfo info = SkImageInfo::Make(0, 0, kN32_SkColorType, kPremul_SkAlphaType);
     92     REPORTER_ASSERT(reporter, nullptr ==
     93                     SkSurface::MakeRenderTarget(ctxInfo.grContext(), SkBudgeted::kNo, info));
     94 }
     95 #endif
     96 
     97 #if SK_SUPPORT_GPU
     98 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(GrContext_colorTypeSupportedAsSurface, reporter, ctxInfo) {
     99     for (int ct = 0; ct < kLastEnum_SkColorType; ++ct) {
    100         static constexpr int kSize = 10;
    101 
    102         SkColorType colorType = static_cast<SkColorType>(ct);
    103         auto info = SkImageInfo::Make(kSize, kSize, colorType, kOpaque_SkAlphaType, nullptr);
    104         bool can = ctxInfo.grContext()->colorTypeSupportedAsSurface(colorType);
    105         auto surf = SkSurface::MakeRenderTarget(ctxInfo.grContext(), SkBudgeted::kYes, info, 1,
    106                                                 nullptr);
    107         REPORTER_ASSERT(reporter, can == SkToBool(surf), "ct: %d, can: %d, surf: %d",
    108                         colorType, can, SkToBool(surf));
    109 
    110         auto* gpu = ctxInfo.grContext()->contextPriv().getGpu();
    111         GrBackendTexture backendTex = gpu->createTestingOnlyBackendTexture(
    112                 nullptr, kSize, kSize, colorType, true, GrMipMapped::kNo);
    113         surf = SkSurface::MakeFromBackendTexture(ctxInfo.grContext(), backendTex,
    114                                                  kTopLeft_GrSurfaceOrigin, 0, colorType, nullptr,
    115                                                  nullptr);
    116         REPORTER_ASSERT(reporter, can == SkToBool(surf), "ct: %d, can: %d, surf: %d",
    117                         colorType, can, SkToBool(surf));
    118 
    119         surf = SkSurface::MakeFromBackendTextureAsRenderTarget(ctxInfo.grContext(), backendTex,
    120                                                                kTopLeft_GrSurfaceOrigin, 1,
    121                                                                colorType, nullptr, nullptr);
    122         REPORTER_ASSERT(reporter, can == SkToBool(surf), "ct: %d, can: %d, surf: %d",
    123                         colorType, can, SkToBool(surf));
    124 
    125         surf.reset();
    126         ctxInfo.grContext()->flush();
    127         if (backendTex.isValid()) {
    128             gpu->deleteTestingOnlyBackendTexture(&backendTex);
    129         }
    130 
    131         static constexpr int kSampleCnt = 2;
    132 
    133         can = ctxInfo.grContext()->maxSurfaceSampleCountForColorType(colorType) >= kSampleCnt;
    134         surf = SkSurface::MakeRenderTarget(ctxInfo.grContext(), SkBudgeted::kYes, info, kSampleCnt,
    135                                            nullptr);
    136         REPORTER_ASSERT(reporter, can == SkToBool(surf), "ct: %d, can: %d, surf: %d",
    137                         colorType, can, SkToBool(surf));
    138 
    139         backendTex = gpu->createTestingOnlyBackendTexture(nullptr, kSize, kSize, colorType, true,
    140                                                           GrMipMapped::kNo);
    141         surf = SkSurface::MakeFromBackendTexture(ctxInfo.grContext(), backendTex,
    142                                                  kTopLeft_GrSurfaceOrigin, kSampleCnt, colorType,
    143                                                  nullptr, nullptr);
    144         REPORTER_ASSERT(reporter, can == SkToBool(surf),
    145                         "colorTypeSupportedAsSurface:%d, surf:%d, ct:%d", can, SkToBool(surf),
    146                         colorType);
    147         // Ensure that the sample count stored on the resulting SkSurface is a valid value.
    148         if (surf) {
    149             auto* rtc = ((SkSurface_Gpu*)(surf.get()))->getDevice()->accessRenderTargetContext();
    150             int storedCnt = rtc->numStencilSamples();
    151             int allowedCnt = ctxInfo.grContext()->caps()->getSampleCount(
    152                     storedCnt, rtc->asSurfaceProxy()->config());
    153             REPORTER_ASSERT(reporter, storedCnt == allowedCnt,
    154                             "Should store an allowed sample count (%d vs %d)", allowedCnt,
    155                             storedCnt);
    156         }
    157 
    158         surf = SkSurface::MakeFromBackendTextureAsRenderTarget(ctxInfo.grContext(), backendTex,
    159                                                                kTopLeft_GrSurfaceOrigin, kSampleCnt,
    160                                                                colorType, nullptr, nullptr);
    161         REPORTER_ASSERT(reporter, can == SkToBool(surf),
    162                         "colorTypeSupportedAsSurface:%d, surf:%d, ct:%d", can, SkToBool(surf),
    163                         colorType);
    164         if (surf) {
    165             auto* rtc = ((SkSurface_Gpu*)(surf.get()))->getDevice()->accessRenderTargetContext();
    166             int storedCnt = rtc->numStencilSamples();
    167             int allowedCnt = ctxInfo.grContext()->caps()->getSampleCount(
    168                     storedCnt, rtc->asSurfaceProxy()->config());
    169             REPORTER_ASSERT(reporter, storedCnt == allowedCnt,
    170                             "Should store an allowed sample count (%d vs %d)", allowedCnt,
    171                             storedCnt);
    172         }
    173 
    174         surf.reset();
    175         ctxInfo.grContext()->flush();
    176         if (backendTex.isValid()) {
    177             gpu->deleteTestingOnlyBackendTexture(&backendTex);
    178         }
    179     }
    180 }
    181 
    182 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(GrContext_maxSurfaceSamplesForColorType, reporter, ctxInfo) {
    183     for (int ct = 0; ct < kLastEnum_SkColorType; ++ct) {
    184         static constexpr int kSize = 10;
    185 
    186         SkColorType colorType = static_cast<SkColorType>(ct);
    187         int max = ctxInfo.grContext()->maxSurfaceSampleCountForColorType(colorType);
    188         if (!max) {
    189             continue;
    190         }
    191         auto* gpu = ctxInfo.grContext()->contextPriv().getGpu();
    192         GrBackendTexture backendTex = gpu->createTestingOnlyBackendTexture(
    193                 nullptr, kSize, kSize, colorType, true, GrMipMapped::kNo);
    194 
    195         auto info = SkImageInfo::Make(kSize, kSize, colorType, kOpaque_SkAlphaType, nullptr);
    196         auto surf = SkSurface::MakeFromBackendTexture(ctxInfo.grContext(), backendTex,
    197                                                       kTopLeft_GrSurfaceOrigin, max,
    198                                                       colorType, nullptr, nullptr);
    199         REPORTER_ASSERT(reporter, surf);
    200         if (!surf) {
    201             continue;
    202         }
    203         int sampleCnt = ((SkSurface_Gpu*)(surf.get()))
    204                                 ->getDevice()
    205                                 ->accessRenderTargetContext()
    206                                 ->numStencilSamples();
    207         REPORTER_ASSERT(reporter, sampleCnt == max, "Exected: %d, actual: %d", max, sampleCnt);
    208     }
    209 }
    210 #endif
    211 
    212 static void test_canvas_peek(skiatest::Reporter* reporter,
    213                              sk_sp<SkSurface>& surface,
    214                              const SkImageInfo& requestInfo,
    215                              bool expectPeekSuccess) {
    216     const SkColor color = SK_ColorRED;
    217     const SkPMColor pmcolor = SkPreMultiplyColor(color);
    218     surface->getCanvas()->clear(color);
    219 
    220     SkPixmap pmap;
    221     bool success = surface->getCanvas()->peekPixels(&pmap);
    222     REPORTER_ASSERT(reporter, expectPeekSuccess == success);
    223 
    224     SkPixmap pmap2;
    225     const void* addr2 = surface->peekPixels(&pmap2) ? pmap2.addr() : nullptr;
    226 
    227     if (success) {
    228         REPORTER_ASSERT(reporter, requestInfo == pmap.info());
    229         REPORTER_ASSERT(reporter, requestInfo.minRowBytes() <= pmap.rowBytes());
    230         REPORTER_ASSERT(reporter, pmcolor == *pmap.addr32());
    231 
    232         REPORTER_ASSERT(reporter, pmap.addr() == pmap2.addr());
    233         REPORTER_ASSERT(reporter, pmap.info() == pmap2.info());
    234         REPORTER_ASSERT(reporter, pmap.rowBytes() == pmap2.rowBytes());
    235     } else {
    236         REPORTER_ASSERT(reporter, nullptr == addr2);
    237     }
    238 }
    239 DEF_TEST(SurfaceCanvasPeek, reporter) {
    240     for (auto& surface_func : { &create_surface, &create_direct_surface }) {
    241         SkImageInfo requestInfo;
    242         auto surface(surface_func(kPremul_SkAlphaType, &requestInfo));
    243         test_canvas_peek(reporter, surface, requestInfo, true);
    244     }
    245 }
    246 #if SK_SUPPORT_GPU
    247 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SurfaceCanvasPeek_Gpu, reporter, ctxInfo) {
    248     for (auto& surface_func : { &create_gpu_surface, &create_gpu_scratch_surface }) {
    249         SkImageInfo requestInfo;
    250         auto surface(surface_func(ctxInfo.grContext(), kPremul_SkAlphaType, &requestInfo));
    251         test_canvas_peek(reporter, surface, requestInfo, false);
    252     }
    253 }
    254 #endif
    255 
    256 static void test_snapshot_alphatype(skiatest::Reporter* reporter, const sk_sp<SkSurface>& surface,
    257                                     SkAlphaType expectedAlphaType) {
    258     REPORTER_ASSERT(reporter, surface);
    259     if (surface) {
    260         sk_sp<SkImage> image(surface->makeImageSnapshot());
    261         REPORTER_ASSERT(reporter, image);
    262         if (image) {
    263             REPORTER_ASSERT(reporter, image->alphaType() == expectedAlphaType);
    264         }
    265     }
    266 }
    267 DEF_TEST(SurfaceSnapshotAlphaType, reporter) {
    268     for (auto& surface_func : { &create_surface, &create_direct_surface }) {
    269         for (auto& at: { kOpaque_SkAlphaType, kPremul_SkAlphaType, kUnpremul_SkAlphaType }) {
    270             auto surface(surface_func(at, nullptr));
    271             test_snapshot_alphatype(reporter, surface, at);
    272         }
    273     }
    274 }
    275 #if SK_SUPPORT_GPU
    276 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SurfaceSnapshotAlphaType_Gpu, reporter, ctxInfo) {
    277     for (auto& surface_func : { &create_gpu_surface, &create_gpu_scratch_surface }) {
    278         // GPU doesn't support creating unpremul surfaces, so only test opaque + premul
    279         for (auto& at : { kOpaque_SkAlphaType, kPremul_SkAlphaType }) {
    280             auto surface(surface_func(ctxInfo.grContext(), at, nullptr));
    281             test_snapshot_alphatype(reporter, surface, at);
    282         }
    283     }
    284 }
    285 #endif
    286 
    287 static GrBackendObject get_surface_backend_texture_handle(
    288     SkSurface* s, SkSurface::BackendHandleAccess a) {
    289     return s->getTextureHandle(a);
    290 }
    291 static GrBackendObject get_surface_backend_render_target_handle(
    292     SkSurface* s, SkSurface::BackendHandleAccess a) {
    293     GrBackendObject result;
    294     if (!s->getRenderTargetHandle(&result, a)) {
    295         return 0;
    296     }
    297     return result;
    298 }
    299 
    300 static void test_backend_handle_access_copy_on_write(
    301     skiatest::Reporter* reporter, SkSurface* surface, SkSurface::BackendHandleAccess mode,
    302     GrBackendObject (*func)(SkSurface*, SkSurface::BackendHandleAccess)) {
    303     GrBackendObject obj1 = func(surface, mode);
    304     sk_sp<SkImage> snap1(surface->makeImageSnapshot());
    305 
    306     GrBackendObject obj2 = func(surface, mode);
    307     sk_sp<SkImage> snap2(surface->makeImageSnapshot());
    308 
    309     // If the access mode triggers CoW, then the backend objects should reflect it.
    310     REPORTER_ASSERT(reporter, (obj1 == obj2) == (snap1 == snap2));
    311 }
    312 DEF_TEST(SurfaceBackendHandleAccessCopyOnWrite, reporter) {
    313     const SkSurface::BackendHandleAccess accessModes[] = {
    314         SkSurface::kFlushRead_BackendHandleAccess,
    315         SkSurface::kFlushWrite_BackendHandleAccess,
    316         SkSurface::kDiscardWrite_BackendHandleAccess,
    317     };
    318     for (auto& handle_access_func :
    319             { &get_surface_backend_texture_handle, &get_surface_backend_render_target_handle }) {
    320         for (auto& accessMode : accessModes) {
    321             auto surface(create_surface());
    322             test_backend_handle_access_copy_on_write(reporter, surface.get(), accessMode,
    323                                                      handle_access_func);
    324         }
    325     }
    326 }
    327 #if SK_SUPPORT_GPU
    328 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SurfaceBackendHandleAccessCopyOnWrite_Gpu, reporter, ctxInfo) {
    329         const SkSurface::BackendHandleAccess accessModes[] = {
    330         SkSurface::kFlushRead_BackendHandleAccess,
    331         SkSurface::kFlushWrite_BackendHandleAccess,
    332         SkSurface::kDiscardWrite_BackendHandleAccess,
    333     };
    334     for (auto& surface_func : { &create_gpu_surface, &create_gpu_scratch_surface }) {
    335         for (auto& handle_access_func :
    336                 { &get_surface_backend_texture_handle, &get_surface_backend_render_target_handle }) {
    337             for (auto& accessMode : accessModes) {
    338                 auto surface(surface_func(ctxInfo.grContext(), kPremul_SkAlphaType, nullptr));
    339                 test_backend_handle_access_copy_on_write(reporter, surface.get(), accessMode,
    340                                                          handle_access_func);
    341             }
    342         }
    343     }
    344 }
    345 #endif
    346 
    347 #if SK_SUPPORT_GPU
    348 
    349 static void test_backend_handle_unique_id(
    350     skiatest::Reporter* reporter, SkSurface* surface,
    351     GrBackendObject (*func)(SkSurface*, SkSurface::BackendHandleAccess)) {
    352     sk_sp<SkImage> image0(surface->makeImageSnapshot());
    353     GrBackendObject obj = func(surface, SkSurface::kFlushRead_BackendHandleAccess);
    354     REPORTER_ASSERT(reporter, obj != 0);
    355     sk_sp<SkImage> image1(surface->makeImageSnapshot());
    356     // just read access should not affect the snapshot
    357     REPORTER_ASSERT(reporter, image0->uniqueID() == image1->uniqueID());
    358 
    359     obj = func(surface, SkSurface::kFlushWrite_BackendHandleAccess);
    360     REPORTER_ASSERT(reporter, obj != 0);
    361     sk_sp<SkImage> image2(surface->makeImageSnapshot());
    362     // expect a new image, since we claimed we would write
    363     REPORTER_ASSERT(reporter, image0->uniqueID() != image2->uniqueID());
    364 
    365     obj = func(surface, SkSurface::kDiscardWrite_BackendHandleAccess);
    366     REPORTER_ASSERT(reporter, obj != 0);
    367     sk_sp<SkImage> image3(surface->makeImageSnapshot());
    368     // expect a new(er) image, since we claimed we would write
    369     REPORTER_ASSERT(reporter, image0->uniqueID() != image3->uniqueID());
    370     REPORTER_ASSERT(reporter, image2->uniqueID() != image3->uniqueID());
    371 }
    372 // No CPU test.
    373 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SurfaceBackendHandleAccessIDs_Gpu, reporter, ctxInfo) {
    374     for (auto& surface_func : { &create_gpu_surface, &create_gpu_scratch_surface }) {
    375         for (auto& test_func : { &test_backend_handle_unique_id }) {
    376             for (auto& handle_access_func :
    377                 { &get_surface_backend_texture_handle, &get_surface_backend_render_target_handle}) {
    378                 auto surface(surface_func(ctxInfo.grContext(), kPremul_SkAlphaType, nullptr));
    379                 test_func(reporter, surface.get(), handle_access_func);
    380             }
    381         }
    382     }
    383 }
    384 #endif
    385 
    386 // Verify that the right canvas commands trigger a copy on write.
    387 static void test_copy_on_write(skiatest::Reporter* reporter, SkSurface* surface) {
    388     SkCanvas* canvas = surface->getCanvas();
    389 
    390     const SkRect testRect =
    391         SkRect::MakeXYWH(SkIntToScalar(0), SkIntToScalar(0),
    392                          SkIntToScalar(4), SkIntToScalar(5));
    393     SkPath testPath;
    394     testPath.addRect(SkRect::MakeXYWH(SkIntToScalar(0), SkIntToScalar(0),
    395                                       SkIntToScalar(2), SkIntToScalar(1)));
    396 
    397     const SkIRect testIRect = SkIRect::MakeXYWH(0, 0, 2, 1);
    398 
    399     SkRegion testRegion;
    400     testRegion.setRect(testIRect);
    401 
    402 
    403     const SkColor testColor = 0x01020304;
    404     const SkPaint testPaint;
    405     const SkPoint testPoints[3] = {
    406         {SkIntToScalar(0), SkIntToScalar(0)},
    407         {SkIntToScalar(2), SkIntToScalar(1)},
    408         {SkIntToScalar(0), SkIntToScalar(2)}
    409     };
    410     const size_t testPointCount = 3;
    411 
    412     SkBitmap testBitmap;
    413     testBitmap.allocN32Pixels(10, 10);
    414     testBitmap.eraseColor(0);
    415 
    416     SkRRect testRRect;
    417     testRRect.setRectXY(testRect, SK_Scalar1, SK_Scalar1);
    418 
    419     SkString testText("Hello World");
    420     const SkPoint testPoints2[] = {
    421         { SkIntToScalar(0), SkIntToScalar(1) },
    422         { SkIntToScalar(1), SkIntToScalar(1) },
    423         { SkIntToScalar(2), SkIntToScalar(1) },
    424         { SkIntToScalar(3), SkIntToScalar(1) },
    425         { SkIntToScalar(4), SkIntToScalar(1) },
    426         { SkIntToScalar(5), SkIntToScalar(1) },
    427         { SkIntToScalar(6), SkIntToScalar(1) },
    428         { SkIntToScalar(7), SkIntToScalar(1) },
    429         { SkIntToScalar(8), SkIntToScalar(1) },
    430         { SkIntToScalar(9), SkIntToScalar(1) },
    431         { SkIntToScalar(10), SkIntToScalar(1) },
    432     };
    433 
    434 #define EXPECT_COPY_ON_WRITE(command)                               \
    435     {                                                               \
    436         sk_sp<SkImage> imageBefore = surface->makeImageSnapshot();  \
    437         sk_sp<SkImage> aur_before(imageBefore);                     \
    438         canvas-> command ;                                          \
    439         sk_sp<SkImage> imageAfter = surface->makeImageSnapshot();   \
    440         sk_sp<SkImage> aur_after(imageAfter);                       \
    441         REPORTER_ASSERT(reporter, imageBefore != imageAfter);       \
    442     }
    443 
    444     EXPECT_COPY_ON_WRITE(clear(testColor))
    445     EXPECT_COPY_ON_WRITE(drawPaint(testPaint))
    446     EXPECT_COPY_ON_WRITE(drawPoints(SkCanvas::kPoints_PointMode, testPointCount, testPoints, \
    447         testPaint))
    448     EXPECT_COPY_ON_WRITE(drawOval(testRect, testPaint))
    449     EXPECT_COPY_ON_WRITE(drawRect(testRect, testPaint))
    450     EXPECT_COPY_ON_WRITE(drawRRect(testRRect, testPaint))
    451     EXPECT_COPY_ON_WRITE(drawPath(testPath, testPaint))
    452     EXPECT_COPY_ON_WRITE(drawBitmap(testBitmap, 0, 0))
    453     EXPECT_COPY_ON_WRITE(drawBitmapRect(testBitmap, testRect, nullptr))
    454     EXPECT_COPY_ON_WRITE(drawBitmapNine(testBitmap, testIRect, testRect, nullptr))
    455     EXPECT_COPY_ON_WRITE(drawString(testText, 0, 1, testPaint))
    456     EXPECT_COPY_ON_WRITE(drawPosText(testText.c_str(), testText.size(), testPoints2, \
    457         testPaint))
    458     EXPECT_COPY_ON_WRITE(drawTextOnPath(testText.c_str(), testText.size(), testPath, nullptr, \
    459         testPaint))
    460 }
    461 DEF_TEST(SurfaceCopyOnWrite, reporter) {
    462     test_copy_on_write(reporter, create_surface().get());
    463 }
    464 #if SK_SUPPORT_GPU
    465 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SurfaceCopyOnWrite_Gpu, reporter, ctxInfo) {
    466     for (auto& surface_func : { &create_gpu_surface, &create_gpu_scratch_surface }) {
    467         auto surface(surface_func(ctxInfo.grContext(), kPremul_SkAlphaType, nullptr));
    468         test_copy_on_write(reporter, surface.get());
    469     }
    470 }
    471 #endif
    472 
    473 static void test_writable_after_snapshot_release(skiatest::Reporter* reporter,
    474                                                  SkSurface* surface) {
    475     // This test succeeds by not triggering an assertion.
    476     // The test verifies that the surface remains writable (usable) after
    477     // acquiring and releasing a snapshot without triggering a copy on write.
    478     SkCanvas* canvas = surface->getCanvas();
    479     canvas->clear(1);
    480     surface->makeImageSnapshot();  // Create and destroy SkImage
    481     canvas->clear(2);  // Must not assert internally
    482 }
    483 DEF_TEST(SurfaceWriteableAfterSnapshotRelease, reporter) {
    484     test_writable_after_snapshot_release(reporter, create_surface().get());
    485 }
    486 #if SK_SUPPORT_GPU
    487 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SurfaceWriteableAfterSnapshotRelease_Gpu, reporter, ctxInfo) {
    488     for (auto& surface_func : { &create_gpu_surface, &create_gpu_scratch_surface }) {
    489         auto surface(surface_func(ctxInfo.grContext(), kPremul_SkAlphaType, nullptr));
    490         test_writable_after_snapshot_release(reporter, surface.get());
    491     }
    492 }
    493 #endif
    494 
    495 #if SK_SUPPORT_GPU
    496 static void test_crbug263329(skiatest::Reporter* reporter,
    497                              SkSurface* surface1,
    498                              SkSurface* surface2) {
    499     // This is a regression test for crbug.com/263329
    500     // Bug was caused by onCopyOnWrite releasing the old surface texture
    501     // back to the scratch texture pool even though the texture is used
    502     // by and active SkImage_Gpu.
    503     SkCanvas* canvas1 = surface1->getCanvas();
    504     SkCanvas* canvas2 = surface2->getCanvas();
    505     canvas1->clear(1);
    506     sk_sp<SkImage> image1(surface1->makeImageSnapshot());
    507     // Trigger copy on write, new backing is a scratch texture
    508     canvas1->clear(2);
    509     sk_sp<SkImage> image2(surface1->makeImageSnapshot());
    510     // Trigger copy on write, old backing should not be returned to scratch
    511     // pool because it is held by image2
    512     canvas1->clear(3);
    513 
    514     canvas2->clear(4);
    515     sk_sp<SkImage> image3(surface2->makeImageSnapshot());
    516     // Trigger copy on write on surface2. The new backing store should not
    517     // be recycling a texture that is held by an existing image.
    518     canvas2->clear(5);
    519     sk_sp<SkImage> image4(surface2->makeImageSnapshot());
    520     REPORTER_ASSERT(reporter, as_IB(image4)->getTexture() != as_IB(image3)->getTexture());
    521     // The following assertion checks crbug.com/263329
    522     REPORTER_ASSERT(reporter, as_IB(image4)->getTexture() != as_IB(image2)->getTexture());
    523     REPORTER_ASSERT(reporter, as_IB(image4)->getTexture() != as_IB(image1)->getTexture());
    524     REPORTER_ASSERT(reporter, as_IB(image3)->getTexture() != as_IB(image2)->getTexture());
    525     REPORTER_ASSERT(reporter, as_IB(image3)->getTexture() != as_IB(image1)->getTexture());
    526     REPORTER_ASSERT(reporter, as_IB(image2)->getTexture() != as_IB(image1)->getTexture());
    527 }
    528 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SurfaceCRBug263329_Gpu, reporter, ctxInfo) {
    529     for (auto& surface_func : { &create_gpu_surface, &create_gpu_scratch_surface }) {
    530         auto surface1(surface_func(ctxInfo.grContext(), kPremul_SkAlphaType, nullptr));
    531         auto surface2(surface_func(ctxInfo.grContext(), kPremul_SkAlphaType, nullptr));
    532         test_crbug263329(reporter, surface1.get(), surface2.get());
    533     }
    534 }
    535 #endif
    536 
    537 DEF_TEST(SurfaceGetTexture, reporter) {
    538     auto surface(create_surface());
    539     sk_sp<SkImage> image(surface->makeImageSnapshot());
    540     REPORTER_ASSERT(reporter, !as_IB(image)->isTextureBacked());
    541     surface->notifyContentWillChange(SkSurface::kDiscard_ContentChangeMode);
    542     REPORTER_ASSERT(reporter, !as_IB(image)->isTextureBacked());
    543 }
    544 #if SK_SUPPORT_GPU
    545 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SurfacepeekTexture_Gpu, reporter, ctxInfo) {
    546     for (auto& surface_func : { &create_gpu_surface, &create_gpu_scratch_surface }) {
    547         auto surface(surface_func(ctxInfo.grContext(), kPremul_SkAlphaType, nullptr));
    548         sk_sp<SkImage> image(surface->makeImageSnapshot());
    549 
    550         REPORTER_ASSERT(reporter, as_IB(image)->isTextureBacked());
    551         GrBackendObject textureHandle = image->getTextureHandle(false);
    552         REPORTER_ASSERT(reporter, 0 != textureHandle);
    553         surface->notifyContentWillChange(SkSurface::kDiscard_ContentChangeMode);
    554         REPORTER_ASSERT(reporter, as_IB(image)->isTextureBacked());
    555         REPORTER_ASSERT(reporter, textureHandle == image->getTextureHandle(false));
    556     }
    557 }
    558 #endif
    559 
    560 #if SK_SUPPORT_GPU
    561 
    562 static SkBudgeted is_budgeted(const sk_sp<SkSurface>& surf) {
    563     SkSurface_Gpu* gsurf = (SkSurface_Gpu*)surf.get();
    564 
    565     GrRenderTargetProxy* proxy = gsurf->getDevice()->accessRenderTargetContext()
    566                                                                         ->asRenderTargetProxy();
    567     return proxy->isBudgeted();
    568 }
    569 
    570 static SkBudgeted is_budgeted(SkImage* image) {
    571     return ((SkImage_Gpu*)image)->peekProxy()->isBudgeted();
    572 }
    573 
    574 static SkBudgeted is_budgeted(const sk_sp<SkImage> image) {
    575     return is_budgeted(image.get());
    576 }
    577 
    578 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SurfaceBudget, reporter, ctxInfo) {
    579     SkImageInfo info = SkImageInfo::MakeN32Premul(8,8);
    580     for (auto budgeted : { SkBudgeted::kNo, SkBudgeted::kYes }) {
    581         auto surface(SkSurface::MakeRenderTarget(ctxInfo.grContext(), budgeted, info));
    582         SkASSERT(surface);
    583         REPORTER_ASSERT(reporter, budgeted == is_budgeted(surface));
    584 
    585         sk_sp<SkImage> image(surface->makeImageSnapshot());
    586 
    587         // Initially the image shares a texture with the surface, and the
    588         // the budgets should always match.
    589         REPORTER_ASSERT(reporter, budgeted == is_budgeted(surface));
    590         REPORTER_ASSERT(reporter, budgeted == is_budgeted(image));
    591 
    592         // Now trigger copy-on-write
    593         surface->getCanvas()->clear(SK_ColorBLUE);
    594 
    595         // They don't share a texture anymore but the budgets should still match.
    596         REPORTER_ASSERT(reporter, budgeted == is_budgeted(surface));
    597         REPORTER_ASSERT(reporter, budgeted == is_budgeted(image));
    598     }
    599 }
    600 #endif
    601 
    602 static void test_no_canvas1(skiatest::Reporter* reporter,
    603                             SkSurface* surface,
    604                             SkSurface::ContentChangeMode mode) {
    605     // Test passes by not asserting
    606     surface->notifyContentWillChange(mode);
    607     SkDEBUGCODE(surface->validate();)
    608 }
    609 static void test_no_canvas2(skiatest::Reporter* reporter,
    610                             SkSurface* surface,
    611                             SkSurface::ContentChangeMode mode) {
    612     // Verifies the robustness of SkSurface for handling use cases where calls
    613     // are made before a canvas is created.
    614     sk_sp<SkImage> image1 = surface->makeImageSnapshot();
    615     sk_sp<SkImage> aur_image1(image1);
    616     SkDEBUGCODE(image1->validate();)
    617     SkDEBUGCODE(surface->validate();)
    618     surface->notifyContentWillChange(mode);
    619     SkDEBUGCODE(image1->validate();)
    620     SkDEBUGCODE(surface->validate();)
    621     sk_sp<SkImage> image2 = surface->makeImageSnapshot();
    622     sk_sp<SkImage> aur_image2(image2);
    623     SkDEBUGCODE(image2->validate();)
    624     SkDEBUGCODE(surface->validate();)
    625     REPORTER_ASSERT(reporter, image1 != image2);
    626 }
    627 DEF_TEST(SurfaceNoCanvas, reporter) {
    628     SkSurface::ContentChangeMode modes[] =
    629             { SkSurface::kDiscard_ContentChangeMode, SkSurface::kRetain_ContentChangeMode};
    630     for (auto& test_func : { &test_no_canvas1, &test_no_canvas2 }) {
    631         for (auto& mode : modes) {
    632             test_func(reporter, create_surface().get(), mode);
    633         }
    634     }
    635 }
    636 #if SK_SUPPORT_GPU
    637 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SurfaceNoCanvas_Gpu, reporter, ctxInfo) {
    638     SkSurface::ContentChangeMode modes[] =
    639             { SkSurface::kDiscard_ContentChangeMode, SkSurface::kRetain_ContentChangeMode};
    640     for (auto& surface_func : { &create_gpu_surface, &create_gpu_scratch_surface }) {
    641         for (auto& test_func : { &test_no_canvas1, &test_no_canvas2 }) {
    642             for (auto& mode : modes) {
    643                 auto surface(surface_func(ctxInfo.grContext(), kPremul_SkAlphaType, nullptr));
    644                 test_func(reporter, surface.get(), mode);
    645             }
    646         }
    647     }
    648 }
    649 #endif
    650 
    651 static void check_rowbytes_remain_consistent(SkSurface* surface, skiatest::Reporter* reporter) {
    652     SkPixmap surfacePM;
    653     REPORTER_ASSERT(reporter, surface->peekPixels(&surfacePM));
    654 
    655     sk_sp<SkImage> image(surface->makeImageSnapshot());
    656     SkPixmap pm;
    657     REPORTER_ASSERT(reporter, image->peekPixels(&pm));
    658 
    659     REPORTER_ASSERT(reporter, surfacePM.rowBytes() == pm.rowBytes());
    660 
    661     // trigger a copy-on-write
    662     surface->getCanvas()->drawPaint(SkPaint());
    663     sk_sp<SkImage> image2(surface->makeImageSnapshot());
    664     REPORTER_ASSERT(reporter, image->uniqueID() != image2->uniqueID());
    665 
    666     SkPixmap pm2;
    667     REPORTER_ASSERT(reporter, image2->peekPixels(&pm2));
    668     REPORTER_ASSERT(reporter, pm2.rowBytes() == pm.rowBytes());
    669 }
    670 
    671 DEF_TEST(surface_rowbytes, reporter) {
    672     const SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100);
    673 
    674     auto surf0(SkSurface::MakeRaster(info));
    675     check_rowbytes_remain_consistent(surf0.get(), reporter);
    676 
    677     // specify a larger rowbytes
    678     auto surf1(SkSurface::MakeRaster(info, 500, nullptr));
    679     check_rowbytes_remain_consistent(surf1.get(), reporter);
    680 
    681     // Try some illegal rowByte values
    682     auto s = SkSurface::MakeRaster(info, 396, nullptr);    // needs to be at least 400
    683     REPORTER_ASSERT(reporter, nullptr == s);
    684     s = SkSurface::MakeRaster(info, std::numeric_limits<size_t>::max(), nullptr);
    685     REPORTER_ASSERT(reporter, nullptr == s);
    686 }
    687 
    688 DEF_TEST(surface_raster_zeroinitialized, reporter) {
    689     sk_sp<SkSurface> s(SkSurface::MakeRasterN32Premul(100, 100));
    690     SkPixmap pixmap;
    691     REPORTER_ASSERT(reporter, s->peekPixels(&pixmap));
    692 
    693     for (int i = 0; i < pixmap.info().width(); ++i) {
    694         for (int j = 0; j < pixmap.info().height(); ++j) {
    695             REPORTER_ASSERT(reporter, *pixmap.addr32(i, j) == 0);
    696         }
    697     }
    698 }
    699 
    700 #if SK_SUPPORT_GPU
    701 static sk_sp<SkSurface> create_gpu_surface_backend_texture(
    702     GrContext* context, int sampleCnt, uint32_t color, GrBackendTexture* outTexture) {
    703     GrGpu* gpu = context->contextPriv().getGpu();
    704 
    705     const int kWidth = 10;
    706     const int kHeight = 10;
    707     std::unique_ptr<uint32_t[]> pixels(new uint32_t[kWidth * kHeight]);
    708     sk_memset32(pixels.get(), color, kWidth * kHeight);
    709 
    710     *outTexture = gpu->createTestingOnlyBackendTexture(
    711         pixels.get(), kWidth, kHeight, kRGBA_8888_GrPixelConfig, true, GrMipMapped::kNo);
    712 
    713     if (!outTexture->isValid() || !gpu->isTestingOnlyBackendTexture(*outTexture)) {
    714         return nullptr;
    715     }
    716 
    717     sk_sp<SkSurface> surface = SkSurface::MakeFromBackendTexture(context, *outTexture,
    718                                                                  kTopLeft_GrSurfaceOrigin, sampleCnt,
    719                                                                  kRGBA_8888_SkColorType,
    720                                                                  nullptr, nullptr);
    721     if (!surface) {
    722         gpu->deleteTestingOnlyBackendTexture(outTexture);
    723         return nullptr;
    724     }
    725     return surface;
    726 }
    727 
    728 static sk_sp<SkSurface> create_gpu_surface_backend_texture_as_render_target(
    729     GrContext* context, int sampleCnt, uint32_t color, GrBackendTexture* outTexture) {
    730     GrGpu* gpu = context->contextPriv().getGpu();
    731 
    732     const int kWidth = 10;
    733     const int kHeight = 10;
    734     std::unique_ptr<uint32_t[]> pixels(new uint32_t[kWidth * kHeight]);
    735     sk_memset32(pixels.get(), color, kWidth * kHeight);
    736 
    737     *outTexture = gpu->createTestingOnlyBackendTexture(
    738         pixels.get(), kWidth, kHeight, kRGBA_8888_GrPixelConfig, true, GrMipMapped::kNo);
    739 
    740     if (!outTexture->isValid() || !gpu->isTestingOnlyBackendTexture(*outTexture)) {
    741         return nullptr;
    742     }
    743 
    744     sk_sp<SkSurface> surface = SkSurface::MakeFromBackendTextureAsRenderTarget(
    745             context, *outTexture, kTopLeft_GrSurfaceOrigin, sampleCnt, kRGBA_8888_SkColorType,
    746             nullptr, nullptr);
    747 
    748     if (!surface) {
    749         gpu->deleteTestingOnlyBackendTexture(outTexture);
    750         return nullptr;
    751     }
    752     return surface;
    753 }
    754 
    755 static void test_surface_clear(skiatest::Reporter* reporter, sk_sp<SkSurface> surface,
    756                                std::function<sk_sp<GrSurfaceContext>(SkSurface*)> grSurfaceGetter,
    757                                uint32_t expectedValue) {
    758     if (!surface) {
    759         ERRORF(reporter, "Could not create GPU SkSurface.");
    760         return;
    761     }
    762     int w = surface->width();
    763     int h = surface->height();
    764     std::unique_ptr<uint32_t[]> pixels(new uint32_t[w * h]);
    765     sk_memset32(pixels.get(), ~expectedValue, w * h);
    766 
    767     sk_sp<GrSurfaceContext> grSurfaceContext(grSurfaceGetter(surface.get()));
    768     if (!grSurfaceContext) {
    769         ERRORF(reporter, "Could access render target of GPU SkSurface.");
    770         return;
    771     }
    772     surface.reset();
    773 
    774     SkImageInfo ii = SkImageInfo::Make(w, h, kRGBA_8888_SkColorType, kPremul_SkAlphaType);
    775     grSurfaceContext->readPixels(ii, pixels.get(), 0, 0, 0);
    776     for (int y = 0; y < h; ++y) {
    777         for (int x = 0; x < w; ++x) {
    778             uint32_t pixel = pixels.get()[y * w + x];
    779             if (pixel != expectedValue) {
    780                 SkString msg;
    781                 if (expectedValue) {
    782                     msg = "SkSurface should have left render target unmodified";
    783                 } else {
    784                     msg = "SkSurface should have cleared the render target";
    785                 }
    786                 ERRORF(reporter,
    787                        "%s but read 0x%08x (instead of 0x%08x) at %x,%d", msg.c_str(), pixel,
    788                        expectedValue, x, y);
    789                 return;
    790             }
    791         }
    792     }
    793 }
    794 
    795 DEF_GPUTEST_FOR_GL_RENDERING_CONTEXTS(SurfaceClear_Gpu, reporter, ctxInfo) {
    796     GrContext* context = ctxInfo.grContext();
    797     GrGpu* gpu = context->contextPriv().getGpu();
    798 
    799     std::function<sk_sp<GrSurfaceContext>(SkSurface*)> grSurfaceContextGetters[] = {
    800         [] (SkSurface* s){
    801             return sk_ref_sp(s->getCanvas()->internal_private_accessTopLayerRenderTargetContext());
    802         },
    803         [] (SkSurface* s){
    804             sk_sp<SkImage> i(s->makeImageSnapshot());
    805             SkImage_Gpu* gpuImage = (SkImage_Gpu *) as_IB(i);
    806             sk_sp<GrTextureProxy> proxy = gpuImage->asTextureProxyRef();
    807             GrContext* context = gpuImage->context();
    808             return context->contextPriv().makeWrappedSurfaceContext(std::move(proxy),
    809                                                                     gpuImage->refColorSpace());
    810         }
    811     };
    812 
    813     for (auto grSurfaceGetter : grSurfaceContextGetters) {
    814         // Test that non-wrapped RTs are created clear.
    815         for (auto& surface_func : {&create_gpu_surface, &create_gpu_scratch_surface}) {
    816             auto surface = surface_func(context, kPremul_SkAlphaType, nullptr);
    817             test_surface_clear(reporter, surface, grSurfaceGetter, 0x0);
    818         }
    819         // Wrapped RTs are *not* supposed to clear (to allow client to partially update a surface).
    820         const uint32_t kOrigColor = 0xABABABAB;
    821         for (auto& surfaceFunc : {&create_gpu_surface_backend_texture,
    822                                   &create_gpu_surface_backend_texture_as_render_target}) {
    823             GrBackendTexture backendTex;
    824             auto surface = surfaceFunc(context, 1, kOrigColor, &backendTex);
    825             test_surface_clear(reporter, surface, grSurfaceGetter, kOrigColor);
    826             surface.reset();
    827             gpu->deleteTestingOnlyBackendTexture(&backendTex);
    828         }
    829     }
    830 }
    831 
    832 static void test_surface_draw_partially(
    833     skiatest::Reporter* reporter, sk_sp<SkSurface> surface, uint32_t origColor) {
    834     const int kW = surface->width();
    835     const int kH = surface->height();
    836     SkPaint paint;
    837     const SkColor kRectColor = ~origColor | 0xFF000000;
    838     paint.setColor(kRectColor);
    839     surface->getCanvas()->drawRect(SkRect::MakeWH(SkIntToScalar(kW), SkIntToScalar(kH)/2),
    840                                    paint);
    841     std::unique_ptr<uint32_t[]> pixels(new uint32_t[kW * kH]);
    842     sk_memset32(pixels.get(), ~origColor, kW * kH);
    843     // Read back RGBA to avoid format conversions that may not be supported on all platforms.
    844     SkImageInfo readInfo = SkImageInfo::Make(kW, kH, kRGBA_8888_SkColorType, kPremul_SkAlphaType);
    845     SkAssertResult(surface->readPixels(readInfo, pixels.get(), kW * sizeof(uint32_t), 0, 0));
    846     bool stop = false;
    847     SkPMColor origColorPM = SkPackARGB_as_RGBA((origColor >> 24 & 0xFF),
    848                                                (origColor >>  0 & 0xFF),
    849                                                (origColor >>  8 & 0xFF),
    850                                                (origColor >> 16 & 0xFF));
    851     SkPMColor rectColorPM = SkPackARGB_as_RGBA((kRectColor >> 24 & 0xFF),
    852                                                (kRectColor >> 16 & 0xFF),
    853                                                (kRectColor >>  8 & 0xFF),
    854                                                (kRectColor >>  0 & 0xFF));
    855     for (int y = 0; y < kH/2 && !stop; ++y) {
    856        for (int x = 0; x < kW && !stop; ++x) {
    857             REPORTER_ASSERT(reporter, rectColorPM == pixels[x + y * kW]);
    858             if (rectColorPM != pixels[x + y * kW]) {
    859                 stop = true;
    860             }
    861         }
    862     }
    863     stop = false;
    864     for (int y = kH/2; y < kH && !stop; ++y) {
    865         for (int x = 0; x < kW && !stop; ++x) {
    866             REPORTER_ASSERT(reporter, origColorPM == pixels[x + y * kW]);
    867             if (origColorPM != pixels[x + y * kW]) {
    868                 stop = true;
    869             }
    870         }
    871     }
    872 }
    873 
    874 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SurfacePartialDraw_Gpu, reporter, ctxInfo) {
    875     GrGpu* gpu = ctxInfo.grContext()->contextPriv().getGpu();
    876     if (!gpu) {
    877         return;
    878     }
    879     static const uint32_t kOrigColor = 0xFFAABBCC;
    880 
    881     for (auto& surfaceFunc : {&create_gpu_surface_backend_texture,
    882                               &create_gpu_surface_backend_texture_as_render_target}) {
    883         // Validate that we can draw to the canvas and that the original texture color is
    884         // preserved in pixels that aren't rendered to via the surface.
    885         // This works only for non-multisampled case.
    886         GrBackendTexture backendTex;
    887         auto surface = surfaceFunc(ctxInfo.grContext(), 1, kOrigColor, &backendTex);
    888         if (surface) {
    889             test_surface_draw_partially(reporter, surface, kOrigColor);
    890             surface.reset();
    891             gpu->deleteTestingOnlyBackendTexture(&backendTex);
    892         }
    893     }
    894 }
    895 
    896 
    897 DEF_GPUTEST_FOR_GL_RENDERING_CONTEXTS(SurfaceAttachStencil_Gpu, reporter, ctxInfo) {
    898     GrGpu* gpu = ctxInfo.grContext()->contextPriv().getGpu();
    899     if (!gpu) {
    900         return;
    901     }
    902     if (gpu->caps()->avoidStencilBuffers()) {
    903         return;
    904     }
    905     static const uint32_t kOrigColor = 0xFFAABBCC;
    906 
    907     auto resourceProvider = ctxInfo.grContext()->contextPriv().resourceProvider();
    908 
    909     for (auto& surfaceFunc : {&create_gpu_surface_backend_texture,
    910                               &create_gpu_surface_backend_texture_as_render_target}) {
    911         for (int sampleCnt : {1, 4, 8}) {
    912             GrBackendTexture backendTex;
    913             auto surface = surfaceFunc(ctxInfo.grContext(), sampleCnt, kOrigColor, &backendTex);
    914 
    915             if (!surface && sampleCnt > 1) {
    916                 // Certain platforms don't support MSAA, skip these.
    917                 continue;
    918             }
    919 
    920             // Validate that we can attach a stencil buffer to an SkSurface created by either of
    921             // our surface functions.
    922             GrRenderTarget* rt = surface->getCanvas()
    923                 ->internal_private_accessTopLayerRenderTargetContext()->accessRenderTarget();
    924             REPORTER_ASSERT(reporter, resourceProvider->attachStencilAttachment(rt));
    925             gpu->deleteTestingOnlyBackendTexture(&backendTex);
    926         }
    927     }
    928 }
    929 #endif
    930 
    931 static void test_surface_creation_and_snapshot_with_color_space(
    932     skiatest::Reporter* reporter,
    933     const char* prefix,
    934     bool f16Support,
    935     bool supports1010102,
    936     std::function<sk_sp<SkSurface>(const SkImageInfo&)> surfaceMaker) {
    937 
    938     auto srgbColorSpace = SkColorSpace::MakeSRGB();
    939     const SkMatrix44* srgbMatrix = srgbColorSpace->toXYZD50();
    940     SkASSERT(srgbMatrix);
    941     SkColorSpaceTransferFn oddGamma;
    942     oddGamma.fA = 1.0f;
    943     oddGamma.fB = oddGamma.fC = oddGamma.fD = oddGamma.fE = oddGamma.fF = 0.0f;
    944     oddGamma.fG = 4.0f;
    945     auto oddColorSpace = SkColorSpace::MakeRGB(oddGamma, *srgbMatrix);
    946     auto linearColorSpace = SkColorSpace::MakeSRGBLinear();
    947 
    948     const struct {
    949         SkColorType         fColorType;
    950         sk_sp<SkColorSpace> fColorSpace;
    951         bool                fShouldWork;
    952         const char*         fDescription;
    953     } testConfigs[] = {
    954         { kN32_SkColorType,       nullptr,          true,  "N32-nullptr" },
    955         { kN32_SkColorType,       linearColorSpace, false, "N32-linear"  },
    956         { kN32_SkColorType,       srgbColorSpace,   true,  "N32-srgb"    },
    957         { kN32_SkColorType,       oddColorSpace,    false, "N32-odd"     },
    958         { kRGBA_F16_SkColorType,  nullptr,          true,  "F16-nullptr" },
    959         { kRGBA_F16_SkColorType,  linearColorSpace, true,  "F16-linear"  },
    960         { kRGBA_F16_SkColorType,  srgbColorSpace,   false, "F16-srgb"    },
    961         { kRGBA_F16_SkColorType,  oddColorSpace,    false, "F16-odd"     },
    962         { kRGB_565_SkColorType,   srgbColorSpace,   false, "565-srgb"    },
    963         { kAlpha_8_SkColorType,   srgbColorSpace,   false, "A8-srgb"     },
    964         { kRGBA_1010102_SkColorType, nullptr,       true,  "1010102-nullptr" },
    965     };
    966 
    967     for (auto& testConfig : testConfigs) {
    968         SkString fullTestName = SkStringPrintf("%s-%s", prefix, testConfig.fDescription);
    969         SkImageInfo info = SkImageInfo::Make(10, 10, testConfig.fColorType, kPremul_SkAlphaType,
    970                                              testConfig.fColorSpace);
    971 
    972         // For some GPU contexts (eg ANGLE), we don't have f16 support, so we should fail to create
    973         // any surface of that type:
    974         bool shouldWork = testConfig.fShouldWork &&
    975                           (f16Support || kRGBA_F16_SkColorType != testConfig.fColorType) &&
    976                           (supports1010102 || kRGBA_1010102_SkColorType != testConfig.fColorType);
    977 
    978         auto surface(surfaceMaker(info));
    979         REPORTER_ASSERT(reporter, SkToBool(surface) == shouldWork, fullTestName.c_str());
    980 
    981         if (shouldWork && surface) {
    982             sk_sp<SkImage> image(surface->makeImageSnapshot());
    983             REPORTER_ASSERT(reporter, image, testConfig.fDescription);
    984             SkColorSpace* imageColorSpace = as_IB(image)->onImageInfo().colorSpace();
    985             REPORTER_ASSERT(reporter, imageColorSpace == testConfig.fColorSpace.get(),
    986                             fullTestName.c_str());
    987         }
    988     }
    989 }
    990 
    991 DEF_TEST(SurfaceCreationWithColorSpace, reporter) {
    992     auto surfaceMaker = [](const SkImageInfo& info) {
    993         return SkSurface::MakeRaster(info);
    994     };
    995 
    996     test_surface_creation_and_snapshot_with_color_space(reporter, "raster", true, true,
    997                                                         surfaceMaker);
    998 }
    999 
   1000 #if SK_SUPPORT_GPU
   1001 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SurfaceCreationWithColorSpace_Gpu, reporter, ctxInfo) {
   1002     GrContext* context = ctxInfo.grContext();
   1003 
   1004     bool f16Support = context->caps()->isConfigRenderable(kRGBA_half_GrPixelConfig);
   1005     bool supports1010102 = context->caps()->isConfigRenderable(kRGBA_1010102_GrPixelConfig);
   1006     auto surfaceMaker = [context](const SkImageInfo& info) {
   1007         return SkSurface::MakeRenderTarget(context, SkBudgeted::kNo, info);
   1008     };
   1009 
   1010     test_surface_creation_and_snapshot_with_color_space(reporter, "gpu", f16Support,
   1011                                                         supports1010102, surfaceMaker);
   1012 
   1013     std::vector<GrBackendTexture> backendTextures;
   1014     auto wrappedSurfaceMaker = [ context, &backendTextures ](const SkImageInfo& info) {
   1015         GrGpu* gpu = context->contextPriv().getGpu();
   1016 
   1017         static const int kSize = 10;
   1018         GrPixelConfig config = SkImageInfo2GrPixelConfig(info, *context->caps());
   1019         SkASSERT(kUnknown_GrPixelConfig != config);
   1020 
   1021         GrBackendTexture backendTex = gpu->createTestingOnlyBackendTexture(
   1022                 nullptr, kSize, kSize, config, true, GrMipMapped::kNo);
   1023 
   1024         if (!backendTex.isValid() ||
   1025             !gpu->isTestingOnlyBackendTexture(backendTex)) {
   1026             return sk_sp<SkSurface>(nullptr);
   1027         }
   1028         backendTextures.push_back(backendTex);
   1029 
   1030         return SkSurface::MakeFromBackendTexture(context, backendTex,
   1031                                                  kTopLeft_GrSurfaceOrigin, 0,
   1032                                                  info.colorType(),
   1033                                                  sk_ref_sp(info.colorSpace()), nullptr);
   1034     };
   1035 
   1036     test_surface_creation_and_snapshot_with_color_space(reporter, "wrapped", f16Support,
   1037                                                         supports1010102, wrappedSurfaceMaker);
   1038 
   1039     context->flush();
   1040 
   1041     GrGpu* gpu = context->contextPriv().getGpu();
   1042     for (auto backendTex : backendTextures) {
   1043         gpu->deleteTestingOnlyBackendTexture(&backendTex);
   1044     }
   1045 }
   1046 #endif
   1047 
   1048 static void test_overdraw_surface(skiatest::Reporter* r, SkSurface* surface) {
   1049     SkOverdrawCanvas canvas(surface->getCanvas());
   1050     canvas.drawPaint(SkPaint());
   1051     sk_sp<SkImage> image = surface->makeImageSnapshot();
   1052 
   1053     SkBitmap bitmap;
   1054     image->asLegacyBitmap(&bitmap);
   1055     for (int y = 0; y < 10; y++) {
   1056         for (int x = 0; x < 10; x++) {
   1057             REPORTER_ASSERT(r, 1 == SkGetPackedA32(*bitmap.getAddr32(x, y)));
   1058         }
   1059     }
   1060 }
   1061 
   1062 DEF_TEST(OverdrawSurface_Raster, r) {
   1063     sk_sp<SkSurface> surface = create_surface();
   1064     test_overdraw_surface(r, surface.get());
   1065 }
   1066 
   1067 #if SK_SUPPORT_GPU
   1068 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(OverdrawSurface_Gpu, r, ctxInfo) {
   1069     GrContext* context = ctxInfo.grContext();
   1070     sk_sp<SkSurface> surface = create_gpu_surface(context);
   1071     test_overdraw_surface(r, surface.get());
   1072 }
   1073 #endif
   1074 
   1075 DEF_TEST(Surface_null, r) {
   1076     REPORTER_ASSERT(r, SkSurface::MakeNull(0, 0) == nullptr);
   1077 
   1078     const int w = 37;
   1079     const int h = 1000;
   1080     auto surf = SkSurface::MakeNull(w, h);
   1081     auto canvas = surf->getCanvas();
   1082 
   1083     canvas->drawPaint(SkPaint());   // should not crash, but don't expect anything to draw
   1084     REPORTER_ASSERT(r, surf->makeImageSnapshot() == nullptr);
   1085 }
   1086 
   1087 // assert: if a given imageinfo is valid for a surface, then it must be valid for an image
   1088 //         (so the snapshot can succeed)
   1089 DEF_TEST(surface_image_unity, reporter) {
   1090     auto do_test = [reporter](const SkImageInfo& info) {
   1091         size_t rowBytes = info.minRowBytes();
   1092         auto surf = SkSurface::MakeRaster(info, rowBytes, nullptr);
   1093         if (surf) {
   1094             auto img = surf->makeImageSnapshot();
   1095             if (!img && false) {    // change to true to document the differences
   1096                 SkDebugf("image failed: [%08X %08X] %14s %s\n",
   1097                          info.width(), info.height(),
   1098                          sk_tool_utils::colortype_name(info.colorType()),
   1099                          sk_tool_utils::alphatype_name(info.alphaType()));
   1100                 return;
   1101             }
   1102             REPORTER_ASSERT(reporter, img != nullptr);
   1103 
   1104             char dummyPixel = 0;    // just need a valid address (not a valid size)
   1105             SkPixmap pmap = { info, &dummyPixel, rowBytes };
   1106             img = SkImage::MakeFromRaster(pmap, nullptr, nullptr);
   1107             REPORTER_ASSERT(reporter, img != nullptr);
   1108         }
   1109     };
   1110 
   1111     const int32_t sizes[] = { 0, 1, 1 << 15, 1 << 16, 1 << 18, 1 << 28, 1 << 29, 1 << 30, -1 };
   1112     for (int cti = 0; cti <= kLastEnum_SkColorType; ++cti) {
   1113         SkColorType ct = static_cast<SkColorType>(cti);
   1114         for (int ati = 0; ati <= kLastEnum_SkAlphaType; ++ati) {
   1115             SkAlphaType at = static_cast<SkAlphaType>(ati);
   1116             for (int32_t size : sizes) {
   1117                 // Large allocations tend to make the 32-bit bots run out of virtual address space.
   1118                 if (sizeof(size_t) == 4 && size > (1<<20)) {
   1119                     continue;
   1120                 }
   1121                 do_test(SkImageInfo::Make(1, size, ct, at));
   1122                 do_test(SkImageInfo::Make(size, 1, ct, at));
   1123             }
   1124         }
   1125     }
   1126 }
   1127