/* * Copyright 2011 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "SkCanvas.h" #include "SkColorData.h" #include "SkImageInfoPriv.h" #include "SkMathPriv.h" #include "SkSurface.h" #include "Test.h" #include "sk_tool_utils.h" #include "GrBackendSurface.h" #include "GrContext.h" #include "GrContextPriv.h" #include "GrGpu.h" #include "GrProxyProvider.h" #include static const int DEV_W = 100, DEV_H = 100; static const SkIRect DEV_RECT = SkIRect::MakeWH(DEV_W, DEV_H); static const U8CPU DEV_PAD = 0xee; static SkPMColor get_canvas_color(int x, int y) { SkASSERT(x >= 0 && x < DEV_W); SkASSERT(y >= 0 && y < DEV_H); U8CPU r = x; U8CPU g = y; U8CPU b = 0xc; U8CPU a = 0x0; switch ((x+y) % 5) { case 0: a = 0xff; break; case 1: a = 0x80; break; case 2: a = 0xCC; break; case 3: a = 0x00; break; case 4: a = 0x01; break; } return SkPremultiplyARGBInline(a, r, g, b); } // assumes any premu/.unpremul has been applied static uint32_t pack_color_type(SkColorType ct, U8CPU a, U8CPU r, U8CPU g, U8CPU b) { uint32_t r32; uint8_t* result = reinterpret_cast(&r32); switch (ct) { case kBGRA_8888_SkColorType: result[0] = b; result[1] = g; result[2] = r; result[3] = a; break; case kRGBA_8888_SkColorType: // fallthrough case kRGB_888x_SkColorType: result[0] = r; result[1] = g; result[2] = b; result[3] = a; break; default: SkASSERT(0); return 0; } return r32; } static uint32_t get_bitmap_color(int x, int y, int w, SkColorType ct, SkAlphaType at) { int n = y * w + x; U8CPU b = n & 0xff; U8CPU g = (n >> 8) & 0xff; U8CPU r = (n >> 16) & 0xff; U8CPU a = 0; switch ((x+y) % 5) { case 4: a = 0xff; break; case 3: a = 0x80; break; case 2: a = 0xCC; break; case 1: a = 0x01; break; case 0: a = 0x00; break; } if (kPremul_SkAlphaType == at) { r = SkMulDiv255Ceiling(r, a); g = SkMulDiv255Ceiling(g, a); b = SkMulDiv255Ceiling(b, a); } return pack_color_type(ct, a, r, g , b); } static void fill_surface(SkSurface* surface) { SkBitmap bmp; bmp.allocN32Pixels(DEV_W, DEV_H); for (int y = 0; y < DEV_H; ++y) { for (int x = 0; x < DEV_W; ++x) { *bmp.getAddr32(x, y) = get_canvas_color(x, y); } } surface->writePixels(bmp, 0, 0); } /** * Lucky for us, alpha is always in the same spot (SK_A32_SHIFT), for both RGBA and BGRA. * Thus this routine doesn't need to know the exact colortype */ static uint32_t premul(uint32_t color) { unsigned a = SkGetPackedA32(color); // these next three are not necessarily r,g,b in that order, but they are r,g,b in some order. unsigned c0 = SkGetPackedR32(color); unsigned c1 = SkGetPackedG32(color); unsigned c2 = SkGetPackedB32(color); c0 = SkMulDiv255Ceiling(c0, a); c1 = SkMulDiv255Ceiling(c1, a); c2 = SkMulDiv255Ceiling(c2, a); return SkPackARGB32NoCheck(a, c0, c1, c2); } static SkPMColor convert_to_PMColor(SkColorType ct, SkAlphaType at, uint32_t color) { if (kUnpremul_SkAlphaType == at) { color = premul(color); } switch (ct) { case kRGBA_8888_SkColorType: case kRGB_888x_SkColorType: // fallthrough color = SkSwizzle_RGBA_to_PMColor(color); break; case kBGRA_8888_SkColorType: color = SkSwizzle_BGRA_to_PMColor(color); break; default: SkASSERT(0); break; } return color; } static bool check_pixel(SkPMColor a, SkPMColor b, bool didPremulConversion) { if (!didPremulConversion) { return a == b; } int32_t aA = static_cast(SkGetPackedA32(a)); int32_t aR = static_cast(SkGetPackedR32(a)); int32_t aG = static_cast(SkGetPackedG32(a)); int32_t aB = SkGetPackedB32(a); int32_t bA = static_cast(SkGetPackedA32(b)); int32_t bR = static_cast(SkGetPackedR32(b)); int32_t bG = static_cast(SkGetPackedG32(b)); int32_t bB = static_cast(SkGetPackedB32(b)); return aA == bA && SkAbs32(aR - bR) <= 1 && SkAbs32(aG - bG) <= 1 && SkAbs32(aB - bB) <= 1; } bool write_should_succeed(const SkImageInfo& dstInfo, const SkImageInfo& srcInfo, bool isGPU) { if (!SkImageInfoValidConversion(dstInfo, srcInfo)) { return false; } if (!isGPU) { return true; } // The GPU backend supports writing unpremul data to a premul dst but not vice versa. if (srcInfo.alphaType() == kPremul_SkAlphaType && dstInfo.alphaType() == kUnpremul_SkAlphaType) { return false; } if (!SkColorTypeIsAlwaysOpaque(srcInfo.colorType()) && SkColorTypeIsAlwaysOpaque(dstInfo.colorType())) { return false; } // The source has no alpha value and the dst is only alpha if (SkColorTypeIsAlwaysOpaque(srcInfo.colorType()) && SkColorTypeIsAlphaOnly(dstInfo.colorType())) { return false; } return true; } static bool check_write(skiatest::Reporter* reporter, SkSurface* surf, SkAlphaType surfaceAlphaType, const SkBitmap& bitmap, int writeX, int writeY) { size_t canvasRowBytes; const uint32_t* canvasPixels; // Can't use canvas->peekPixels(), as we are trying to look at GPU pixels sometimes as well. // At some point this will be unsupported, as we won't allow accessBitmap() to magically call // readPixels for the client. SkBitmap secretDevBitmap; secretDevBitmap.allocN32Pixels(surf->width(), surf->height()); if (!surf->readPixels(secretDevBitmap, 0, 0)) { return false; } canvasRowBytes = secretDevBitmap.rowBytes(); canvasPixels = static_cast(secretDevBitmap.getPixels()); if (nullptr == canvasPixels) { return false; } if (surf->width() != DEV_W || surf->height() != DEV_H) { return false; } const SkImageInfo bmInfo = bitmap.info(); SkIRect writeRect = SkIRect::MakeXYWH(writeX, writeY, bitmap.width(), bitmap.height()); for (int cy = 0; cy < DEV_H; ++cy) { for (int cx = 0; cx < DEV_W; ++cx) { SkPMColor canvasPixel = canvasPixels[cx]; if (writeRect.contains(cx, cy)) { int bx = cx - writeX; int by = cy - writeY; uint32_t bmpColor8888 = get_bitmap_color(bx, by, bitmap.width(), bmInfo.colorType(), bmInfo.alphaType()); bool mul = (kUnpremul_SkAlphaType == bmInfo.alphaType()); SkPMColor bmpPMColor = convert_to_PMColor(bmInfo.colorType(), bmInfo.alphaType(), bmpColor8888); if (bmInfo.alphaType() == kOpaque_SkAlphaType || surfaceAlphaType == kOpaque_SkAlphaType) { bmpPMColor |= 0xFF000000; } if (!check_pixel(bmpPMColor, canvasPixel, mul)) { ERRORF(reporter, "Expected canvas pixel at %d, %d to be 0x%08x, got 0x%08x. " "Write performed premul: %d", cx, cy, bmpPMColor, canvasPixel, mul); return false; } } else { SkPMColor testColor = get_canvas_color(cx, cy); if (canvasPixel != testColor) { ERRORF(reporter, "Canvas pixel outside write rect at %d, %d changed." " Should be 0x%08x, got 0x%08x. ", cx, cy, testColor, canvasPixel); return false; } } } if (cy != DEV_H -1) { const char* pad = reinterpret_cast(canvasPixels + DEV_W); for (size_t px = 0; px < canvasRowBytes - 4 * DEV_W; ++px) { bool check; REPORTER_ASSERT(reporter, check = (pad[px] == static_cast(DEV_PAD))); if (!check) { return false; } } } canvasPixels += canvasRowBytes/4; } return true; } #include "SkMallocPixelRef.h" // This is a tricky pattern, because we have to setConfig+rowBytes AND specify // a custom pixelRef (which also has to specify its rowBytes), so we have to be // sure that the two rowBytes match (and the infos match). // static bool alloc_row_bytes(SkBitmap* bm, const SkImageInfo& info, size_t rowBytes) { if (!bm->setInfo(info, rowBytes)) { return false; } sk_sp pr = SkMallocPixelRef::MakeAllocate(info, rowBytes); bm->setPixelRef(std::move(pr), 0, 0); return true; } static void free_pixels(void* pixels, void* ctx) { sk_free(pixels); } static bool setup_bitmap(SkBitmap* bm, SkColorType ct, SkAlphaType at, int w, int h, int tightRB) { size_t rowBytes = tightRB ? 0 : 4 * w + 60; SkImageInfo info = SkImageInfo::Make(w, h, ct, at); if (!alloc_row_bytes(bm, info, rowBytes)) { return false; } for (int y = 0; y < h; ++y) { for (int x = 0; x < w; ++x) { *bm->getAddr32(x, y) = get_bitmap_color(x, y, w, ct, at); } } return true; } static void call_writepixels(SkSurface* surface) { const SkImageInfo info = SkImageInfo::MakeN32Premul(1, 1); SkPMColor pixel = 0; surface->writePixels({info, &pixel, sizeof(SkPMColor)}, 0, 0); } DEF_TEST(WritePixelsSurfaceGenID, reporter) { const SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100); auto surface(SkSurface::MakeRaster(info)); uint32_t genID1 = surface->generationID(); call_writepixels(surface.get()); uint32_t genID2 = surface->generationID(); REPORTER_ASSERT(reporter, genID1 != genID2); } static void test_write_pixels(skiatest::Reporter* reporter, SkSurface* surface, const SkImageInfo& surfaceInfo) { const SkIRect testRects[] = { // entire thing DEV_RECT, // larger on all sides SkIRect::MakeLTRB(-10, -10, DEV_W + 10, DEV_H + 10), // fully contained SkIRect::MakeLTRB(DEV_W / 4, DEV_H / 4, 3 * DEV_W / 4, 3 * DEV_H / 4), // outside top left SkIRect::MakeLTRB(-10, -10, -1, -1), // touching top left corner SkIRect::MakeLTRB(-10, -10, 0, 0), // overlapping top left corner SkIRect::MakeLTRB(-10, -10, DEV_W / 4, DEV_H / 4), // overlapping top left and top right corners SkIRect::MakeLTRB(-10, -10, DEV_W + 10, DEV_H / 4), // touching entire top edge SkIRect::MakeLTRB(-10, -10, DEV_W + 10, 0), // overlapping top right corner SkIRect::MakeLTRB(3 * DEV_W / 4, -10, DEV_W + 10, DEV_H / 4), // contained in x, overlapping top edge SkIRect::MakeLTRB(DEV_W / 4, -10, 3 * DEV_W / 4, DEV_H / 4), // outside top right corner SkIRect::MakeLTRB(DEV_W + 1, -10, DEV_W + 10, -1), // touching top right corner SkIRect::MakeLTRB(DEV_W, -10, DEV_W + 10, 0), // overlapping top left and bottom left corners SkIRect::MakeLTRB(-10, -10, DEV_W / 4, DEV_H + 10), // touching entire left edge SkIRect::MakeLTRB(-10, -10, 0, DEV_H + 10), // overlapping bottom left corner SkIRect::MakeLTRB(-10, 3 * DEV_H / 4, DEV_W / 4, DEV_H + 10), // contained in y, overlapping left edge SkIRect::MakeLTRB(-10, DEV_H / 4, DEV_W / 4, 3 * DEV_H / 4), // outside bottom left corner SkIRect::MakeLTRB(-10, DEV_H + 1, -1, DEV_H + 10), // touching bottom left corner SkIRect::MakeLTRB(-10, DEV_H, 0, DEV_H + 10), // overlapping bottom left and bottom right corners SkIRect::MakeLTRB(-10, 3 * DEV_H / 4, DEV_W + 10, DEV_H + 10), // touching entire left edge SkIRect::MakeLTRB(0, DEV_H, DEV_W, DEV_H + 10), // overlapping bottom right corner SkIRect::MakeLTRB(3 * DEV_W / 4, 3 * DEV_H / 4, DEV_W + 10, DEV_H + 10), // overlapping top right and bottom right corners SkIRect::MakeLTRB(3 * DEV_W / 4, -10, DEV_W + 10, DEV_H + 10), }; SkCanvas* canvas = surface->getCanvas(); static const struct { SkColorType fColorType; SkAlphaType fAlphaType; } gSrcConfigs[] = { {kRGBA_8888_SkColorType, kPremul_SkAlphaType}, {kRGBA_8888_SkColorType, kUnpremul_SkAlphaType}, {kRGB_888x_SkColorType, kOpaque_SkAlphaType}, {kBGRA_8888_SkColorType, kPremul_SkAlphaType}, {kBGRA_8888_SkColorType, kUnpremul_SkAlphaType}, }; for (size_t r = 0; r < SK_ARRAY_COUNT(testRects); ++r) { const SkIRect& rect = testRects[r]; for (int tightBmp = 0; tightBmp < 2; ++tightBmp) { for (size_t c = 0; c < SK_ARRAY_COUNT(gSrcConfigs); ++c) { const SkColorType ct = gSrcConfigs[c].fColorType; const SkAlphaType at = gSrcConfigs[c].fAlphaType; bool isGPU = SkToBool(surface->getCanvas()->getGrContext()); fill_surface(surface); SkBitmap bmp; REPORTER_ASSERT(reporter, setup_bitmap(&bmp, ct, at, rect.width(), rect.height(), SkToBool(tightBmp))); uint32_t idBefore = surface->generationID(); // sk_tool_utils::write_pixels(&canvas, bmp, rect.fLeft, rect.fTop, ct, at); surface->writePixels(bmp, rect.fLeft, rect.fTop); uint32_t idAfter = surface->generationID(); REPORTER_ASSERT(reporter, check_write(reporter, surface, surfaceInfo.alphaType(), bmp, rect.fLeft, rect.fTop)); // we should change the genID iff pixels were actually written. SkIRect canvasRect = SkIRect::MakeSize(canvas->getBaseLayerSize()); SkIRect writeRect = SkIRect::MakeXYWH(rect.fLeft, rect.fTop, bmp.width(), bmp.height()); bool expectSuccess = SkIRect::Intersects(canvasRect, writeRect) && write_should_succeed(surfaceInfo, bmp.info(), isGPU); REPORTER_ASSERT(reporter, expectSuccess == (idBefore != idAfter)); } } } } DEF_TEST(WritePixels, reporter) { const SkImageInfo info = SkImageInfo::MakeN32Premul(DEV_W, DEV_H); for (auto& tightRowBytes : { true, false }) { const size_t rowBytes = tightRowBytes ? info.minRowBytes() : 4 * DEV_W + 100; const size_t size = info.computeByteSize(rowBytes); void* pixels = sk_malloc_throw(size); // if rowBytes isn't tight then set the padding to a known value if (!tightRowBytes) { memset(pixels, DEV_PAD, size); } auto surface(SkSurface::MakeRasterDirectReleaseProc(info, pixels, rowBytes, free_pixels, nullptr)); test_write_pixels(reporter, surface.get(), info); } } static void test_write_pixels(skiatest::Reporter* reporter, GrContext* context, int sampleCnt) { const SkImageInfo ii = SkImageInfo::MakeN32Premul(DEV_W, DEV_H); for (auto& origin : { kTopLeft_GrSurfaceOrigin, kBottomLeft_GrSurfaceOrigin }) { sk_sp surface(SkSurface::MakeRenderTarget(context, SkBudgeted::kNo, ii, sampleCnt, origin, nullptr)); if (surface) { test_write_pixels(reporter, surface.get(), ii); } } } DEF_GPUTEST_FOR_RENDERING_CONTEXTS(WritePixels_Gpu, reporter, ctxInfo) { test_write_pixels(reporter, ctxInfo.grContext(), 1); } DEF_GPUTEST_FOR_RENDERING_CONTEXTS(WritePixelsMSAA_Gpu, reporter, ctxInfo) { test_write_pixels(reporter, ctxInfo.grContext(), 1); } static void test_write_pixels_non_texture(skiatest::Reporter* reporter, GrContext* context, int sampleCnt) { GrGpu* gpu = context->priv().getGpu(); for (auto& origin : { kTopLeft_GrSurfaceOrigin, kBottomLeft_GrSurfaceOrigin }) { GrBackendTexture backendTex = gpu->createTestingOnlyBackendTexture( nullptr, DEV_W, DEV_H, GrColorType::kRGBA_8888, true, GrMipMapped::kNo); if (!backendTex.isValid()) { continue; } SkColorType colorType = kN32_SkColorType; sk_sp surface(SkSurface::MakeFromBackendTextureAsRenderTarget( context, backendTex, origin, sampleCnt, colorType, nullptr, nullptr)); if (surface) { auto ii = SkImageInfo::MakeN32Premul(DEV_W, DEV_H); test_write_pixels(reporter, surface.get(), ii); } gpu->deleteTestingOnlyBackendTexture(backendTex); } } DEF_GPUTEST_FOR_RENDERING_CONTEXTS(WritePixelsNonTexture_Gpu, reporter, ctxInfo) { test_write_pixels_non_texture(reporter, ctxInfo.grContext(), 1); } DEF_GPUTEST_FOR_RENDERING_CONTEXTS(WritePixelsNonTextureMSAA_Gpu, reporter, ctxInfo) { test_write_pixels_non_texture(reporter, ctxInfo.grContext(), 4); } static sk_sp create_surf(GrContext* context, int width, int height) { const SkImageInfo ii = SkImageInfo::Make(width, height, kRGBA_8888_SkColorType, kPremul_SkAlphaType); sk_sp surf = SkSurface::MakeRenderTarget(context, SkBudgeted::kYes, ii); surf->flush(); return surf; } static sk_sp upload(const sk_sp& surf, SkColor color) { const SkImageInfo smII = SkImageInfo::Make(16, 16, kRGBA_8888_SkColorType, kPremul_SkAlphaType); SkBitmap bm; bm.allocPixels(smII); bm.eraseColor(color); surf->writePixels(bm, 0, 0); return surf->makeImageSnapshot(); } // This is tests whether the first writePixels is completed before the // second writePixels takes effect (i.e., that writePixels correctly flushes // in between uses of the shared backing resource). DEF_GPUTEST_FOR_RENDERING_CONTEXTS(WritePixelsPendingIO, reporter, ctxInfo) { GrContext* context = ctxInfo.grContext(); GrProxyProvider* proxyProvider = context->priv().proxyProvider(); static const int kFullSize = 62; static const int kHalfSize = 31; static const uint32_t kLeftColor = 0xFF222222; static const uint32_t kRightColor = 0xFFAAAAAA; const SkImageInfo fullII = SkImageInfo::Make(kFullSize, kFullSize, kRGBA_8888_SkColorType, kPremul_SkAlphaType); const SkImageInfo halfII = SkImageInfo::Make(kHalfSize, kFullSize, kRGBA_8888_SkColorType, kPremul_SkAlphaType); sk_sp dest = SkSurface::MakeRenderTarget(context, SkBudgeted::kYes, fullII); { // Seed the resource cached with a scratch texture that will be // reused by writeSurfacePixels GrSurfaceDesc desc; desc.fFlags = kNone_GrSurfaceFlags; desc.fWidth = 32; desc.fHeight = 64; desc.fConfig = kRGBA_8888_GrPixelConfig; const GrBackendFormat format = context->priv().caps()->getBackendFormatFromColorType(kRGBA_8888_SkColorType); sk_sp temp = proxyProvider->createProxy( format, desc, kTopLeft_GrSurfaceOrigin, SkBackingFit::kApprox, SkBudgeted::kYes); temp->instantiate(context->priv().resourceProvider()); } // Create the surfaces and flush them to ensure there is no lingering pendingIO sk_sp leftSurf = create_surf(context, kHalfSize, kFullSize); sk_sp rightSurf = create_surf(context, kHalfSize, kFullSize); sk_sp leftImg = upload(std::move(leftSurf), kLeftColor); dest->getCanvas()->drawImage(std::move(leftImg), 0, 0); sk_sp rightImg = upload(std::move(rightSurf), kRightColor); dest->getCanvas()->drawImage(std::move(rightImg), kHalfSize, 0); SkBitmap bm; bm.allocPixels(fullII); SkAssertResult(dest->readPixels(bm, 0, 0)); bool isCorrect = true; for (int y = 0; isCorrect && y < 16; ++y) { const uint32_t* sl = bm.getAddr32(0, y); for (int x = 0; x < 16; ++x) { if (kLeftColor != sl[x]) { isCorrect = false; break; } } for (int x = kHalfSize; x < kHalfSize+16; ++x) { if (kRightColor != sl[x]) { isCorrect = false; break; } } } REPORTER_ASSERT(reporter, isCorrect); }