| /* |
| * 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 "SkMathPriv.h" |
| #include "SkSurface.h" |
| #include "Test.h" |
| #include "sk_tool_utils.h" |
| |
| #if SK_SUPPORT_GPU |
| #include "GrBackendSurface.h" |
| #include "GrContext.h" |
| #include "GrGpu.h" |
| #include "GrTest.h" |
| #endif |
| |
| #include <initializer_list> |
| |
| static const int DEV_W = 100, DEV_H = 100; |
| static const SkIRect DEV_RECT = SkIRect::MakeWH(DEV_W, DEV_H); |
| static const SkRect DEV_RECT_S = SkRect::MakeWH(DEV_W * SK_Scalar1, |
| DEV_H * SK_Scalar1); |
| 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<uint8_t*>(&r32); |
| switch (ct) { |
| case kBGRA_8888_SkColorType: |
| result[0] = b; |
| result[1] = g; |
| result[2] = r; |
| result[3] = a; |
| break; |
| case kRGBA_8888_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_canvas(SkCanvas* canvas) { |
| SkBitmap bmp; |
| if (bmp.isNull()) { |
| 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); |
| } |
| } |
| } |
| canvas->save(); |
| canvas->setMatrix(SkMatrix::I()); |
| canvas->clipRect(DEV_RECT_S, kReplace_SkClipOp); |
| SkPaint paint; |
| paint.setBlendMode(SkBlendMode::kSrc); |
| canvas->drawBitmap(bmp, 0, 0, &paint); |
| canvas->restore(); |
| } |
| |
| /** |
| * 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: |
| 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<int32_t>(SkGetPackedA32(a)); |
| int32_t aR = static_cast<int32_t>(SkGetPackedR32(a)); |
| int32_t aG = static_cast<int32_t>(SkGetPackedG32(a)); |
| int32_t aB = SkGetPackedB32(a); |
| |
| int32_t bA = static_cast<int32_t>(SkGetPackedA32(b)); |
| int32_t bR = static_cast<int32_t>(SkGetPackedR32(b)); |
| int32_t bG = static_cast<int32_t>(SkGetPackedG32(b)); |
| int32_t bB = static_cast<int32_t>(SkGetPackedB32(b)); |
| |
| return aA == bA && |
| SkAbs32(aR - bR) <= 1 && |
| SkAbs32(aG - bG) <= 1 && |
| SkAbs32(aB - bB) <= 1; |
| } |
| |
| static bool check_write(skiatest::Reporter* reporter, SkSurface* surf, 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<const uint32_t*>(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 (!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<const char*>(canvasPixels + DEV_W); |
| for (size_t px = 0; px < canvasRowBytes - 4 * DEV_W; ++px) { |
| bool check; |
| REPORTER_ASSERT(reporter, check = (pad[px] == static_cast<char>(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<SkPixelRef> 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(SkCanvas* canvas) { |
| const SkImageInfo info = SkImageInfo::MakeN32Premul(1, 1); |
| SkPMColor pixel = 0; |
| canvas->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->getCanvas()); |
| uint32_t genID2 = surface->generationID(); |
| REPORTER_ASSERT(reporter, genID1 != genID2); |
| } |
| |
| static void test_write_pixels(skiatest::Reporter* reporter, SkSurface* surface) { |
| 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 }, |
| { 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; |
| |
| fill_canvas(canvas); |
| 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); |
| canvas->writePixels(bmp, rect.fLeft, rect.fTop); |
| |
| uint32_t idAfter = surface->generationID(); |
| REPORTER_ASSERT(reporter, check_write(reporter, surface, 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 intersects = SkIRect::Intersects(canvasRect, writeRect) ; |
| REPORTER_ASSERT(reporter, intersects == (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()); |
| } |
| } |
| #if SK_SUPPORT_GPU |
| DEF_GPUTEST_FOR_RENDERING_CONTEXTS(WritePixels_Gpu, reporter, ctxInfo) { |
| const SkImageInfo ii = SkImageInfo::MakeN32Premul(DEV_W, DEV_H); |
| |
| for (auto& origin : { kTopLeft_GrSurfaceOrigin, kBottomLeft_GrSurfaceOrigin }) { |
| for (int sampleCnt : {0, 4}) { |
| sk_sp<SkSurface> surface(SkSurface::MakeRenderTarget(ctxInfo.grContext(), |
| SkBudgeted::kNo, ii, sampleCnt, |
| origin, nullptr)); |
| if (!surface && sampleCnt > 0) { |
| // Some platforms don't support MSAA |
| continue; |
| } |
| test_write_pixels(reporter, surface.get()); |
| } |
| } |
| } |
| |
| DEF_GPUTEST_FOR_RENDERING_CONTEXTS(WritePixelsNonTexture_Gpu, reporter, ctxInfo) { |
| GrContext* context = ctxInfo.grContext(); |
| |
| for (auto& origin : { kTopLeft_GrSurfaceOrigin, kBottomLeft_GrSurfaceOrigin }) { |
| for (int sampleCnt : {0, 4}) { |
| auto handle = context->getGpu()->createTestingOnlyBackendTexture( |
| nullptr, DEV_W, DEV_H, kSkia8888_GrPixelConfig, true); |
| GrBackendTexture backendTexture = GrTest::CreateBackendTexture( |
| ctxInfo.backend(), DEV_W, DEV_H, kSkia8888_GrPixelConfig, handle); |
| sk_sp<SkSurface> surface(SkSurface::MakeFromBackendTextureAsRenderTarget( |
| context, backendTexture, origin, sampleCnt, nullptr, nullptr)); |
| if (!surface) { |
| context->getGpu()->deleteTestingOnlyBackendTexture(handle); |
| continue; |
| } |
| |
| test_write_pixels(reporter, surface.get()); |
| |
| surface.reset(); |
| context->getGpu()->deleteTestingOnlyBackendTexture(handle); |
| } |
| } |
| } |
| #endif |