| |
| /* |
| * 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 "Test.h" |
| #include "SkCanvas.h" |
| #include "SkRegion.h" |
| #include "SkGpuDevice.h" |
| |
| 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; |
| |
| namespace { |
| SkPMColor getCanvasColor(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); |
| } |
| |
| bool config8888IsPremul(SkCanvas::Config8888 config8888) { |
| switch (config8888) { |
| case SkCanvas::kNative_Premul_Config8888: |
| case SkCanvas::kBGRA_Premul_Config8888: |
| case SkCanvas::kRGBA_Premul_Config8888: |
| return true; |
| case SkCanvas::kNative_Unpremul_Config8888: |
| case SkCanvas::kBGRA_Unpremul_Config8888: |
| case SkCanvas::kRGBA_Unpremul_Config8888: |
| return false; |
| default: |
| SkASSERT(0); |
| return false; |
| } |
| } |
| |
| // assumes any premu/.unpremul has been applied |
| uint32_t packConfig8888(SkCanvas::Config8888 config8888, |
| U8CPU a, U8CPU r, U8CPU g, U8CPU b) { |
| uint32_t r32; |
| uint8_t* result = reinterpret_cast<uint8_t*>(&r32); |
| switch (config8888) { |
| case SkCanvas::kNative_Premul_Config8888: |
| case SkCanvas::kNative_Unpremul_Config8888: |
| r32 = SkPackARGB32NoCheck(a, r, g, b); |
| break; |
| case SkCanvas::kBGRA_Premul_Config8888: |
| case SkCanvas::kBGRA_Unpremul_Config8888: |
| result[0] = b; |
| result[1] = g; |
| result[2] = r; |
| result[3] = a; |
| break; |
| case SkCanvas::kRGBA_Premul_Config8888: |
| case SkCanvas::kRGBA_Unpremul_Config8888: |
| result[0] = r; |
| result[1] = g; |
| result[2] = b; |
| result[3] = a; |
| break; |
| default: |
| SkASSERT(0); |
| return 0; |
| } |
| return r32; |
| } |
| |
| uint32_t getBitmapColor(int x, int y, int w, int h, SkCanvas::Config8888 config8888) { |
| 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 (config8888IsPremul(config8888)) { |
| r = SkMulDiv255Ceiling(r, a); |
| g = SkMulDiv255Ceiling(g, a); |
| b = SkMulDiv255Ceiling(b, a); |
| } |
| return packConfig8888(config8888, a, r, g , b); |
| } |
| |
| void fillCanvas(SkCanvas* canvas) { |
| static SkBitmap bmp; |
| if (bmp.isNull()) { |
| bmp.setConfig(SkBitmap::kARGB_8888_Config, DEV_W, DEV_H); |
| bool alloc = bmp.allocPixels(); |
| SkASSERT(alloc); |
| SkAutoLockPixels alp(bmp); |
| intptr_t pixels = reinterpret_cast<intptr_t>(bmp.getPixels()); |
| for (int y = 0; y < DEV_H; ++y) { |
| for (int x = 0; x < DEV_W; ++x) { |
| SkPMColor* pixel = reinterpret_cast<SkPMColor*>(pixels + y * bmp.rowBytes() + x * bmp.bytesPerPixel()); |
| *pixel = getCanvasColor(x, y); |
| } |
| } |
| } |
| canvas->save(); |
| canvas->setMatrix(SkMatrix::I()); |
| canvas->clipRect(DEV_RECT_S, SkRegion::kReplace_Op); |
| SkPaint paint; |
| paint.setXfermodeMode(SkXfermode::kSrc_Mode); |
| canvas->drawBitmap(bmp, 0, 0, &paint); |
| canvas->restore(); |
| } |
| |
| SkPMColor convertConfig8888ToPMColor(SkCanvas::Config8888 config8888, |
| uint32_t color, |
| bool* premul) { |
| const uint8_t* c = reinterpret_cast<uint8_t*>(&color); |
| U8CPU a,r,g,b; |
| *premul = false; |
| switch (config8888) { |
| case SkCanvas::kNative_Premul_Config8888: |
| return color; |
| case SkCanvas::kNative_Unpremul_Config8888: |
| *premul = true; |
| a = SkGetPackedA32(color); |
| r = SkGetPackedR32(color); |
| g = SkGetPackedG32(color); |
| b = SkGetPackedB32(color); |
| break; |
| case SkCanvas::kBGRA_Unpremul_Config8888: |
| *premul = true; // fallthru |
| case SkCanvas::kBGRA_Premul_Config8888: |
| a = static_cast<U8CPU>(c[3]); |
| r = static_cast<U8CPU>(c[2]); |
| g = static_cast<U8CPU>(c[1]); |
| b = static_cast<U8CPU>(c[0]); |
| break; |
| case SkCanvas::kRGBA_Unpremul_Config8888: |
| *premul = true; // fallthru |
| case SkCanvas::kRGBA_Premul_Config8888: |
| a = static_cast<U8CPU>(c[3]); |
| r = static_cast<U8CPU>(c[0]); |
| g = static_cast<U8CPU>(c[1]); |
| b = static_cast<U8CPU>(c[2]); |
| break; |
| default: |
| GrCrash("Unexpected Config8888"); |
| } |
| if (*premul) { |
| r = SkMulDiv255Ceiling(r, a); |
| g = SkMulDiv255Ceiling(g, a); |
| b = SkMulDiv255Ceiling(b, a); |
| } |
| return SkPackARGB32(a, r, g, b); |
| } |
| |
| bool checkPixel(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; |
| } |
| |
| bool checkWrite(skiatest::Reporter* reporter, |
| SkCanvas* canvas, |
| const SkBitmap& bitmap, |
| int writeX, int writeY, |
| SkCanvas::Config8888 config8888) { |
| SkDevice* dev = canvas->getDevice(); |
| if (!dev) { |
| return false; |
| } |
| SkBitmap devBmp = dev->accessBitmap(false); |
| if (devBmp.width() != DEV_W || |
| devBmp.height() != DEV_H || |
| devBmp.config() != SkBitmap::kARGB_8888_Config || |
| devBmp.isNull()) { |
| return false; |
| } |
| SkAutoLockPixels alp(devBmp); |
| |
| intptr_t canvasPixels = reinterpret_cast<intptr_t>(devBmp.getPixels()); |
| size_t canvasRowBytes = devBmp.rowBytes(); |
| SkIRect writeRect = SkIRect::MakeXYWH(writeX, writeY, bitmap.width(), bitmap.height()); |
| bool success = true; |
| for (int cy = 0; cy < DEV_H; ++cy) { |
| const SkPMColor* canvasRow = reinterpret_cast<const SkPMColor*>(canvasPixels); |
| for (int cx = 0; cx < DEV_W; ++cx) { |
| SkPMColor canvasPixel = canvasRow[cx]; |
| if (writeRect.contains(cx, cy)) { |
| int bx = cx - writeX; |
| int by = cy - writeY; |
| uint32_t bmpColor8888 = getBitmapColor(bx, by, bitmap.width(), bitmap.height(), config8888); |
| bool mul; |
| SkPMColor bmpPMColor = convertConfig8888ToPMColor(config8888, bmpColor8888, &mul); |
| bool check; |
| REPORTER_ASSERT(reporter, check = checkPixel(bmpPMColor, canvasPixel, mul)); |
| if (!check) { |
| success = false; |
| } |
| } else { |
| bool check; |
| SkPMColor testColor = getCanvasColor(cx, cy); |
| REPORTER_ASSERT(reporter, check = (canvasPixel == testColor)); |
| if (!check) { |
| success = false; |
| } |
| } |
| } |
| if (cy != DEV_H -1) { |
| const char* pad = reinterpret_cast<const char*>(canvasPixels + 4 * 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) { |
| success = false; |
| } |
| } |
| } |
| canvasPixels += canvasRowBytes; |
| } |
| |
| return success; |
| } |
| |
| enum DevType { |
| kRaster_DevType, |
| kGpu_DevType, |
| }; |
| |
| struct CanvasConfig { |
| DevType fDevType; |
| bool fTightRowBytes; |
| }; |
| |
| static const CanvasConfig gCanvasConfigs[] = { |
| {kRaster_DevType, true}, |
| {kRaster_DevType, false}, |
| #ifdef SK_SCALAR_IS_FLOAT |
| {kGpu_DevType, true}, // row bytes has no meaning on gpu devices |
| #endif |
| }; |
| |
| bool setupCanvas(SkCanvas* canvas, const CanvasConfig& c, GrContext* grCtx) { |
| switch (c.fDevType) { |
| case kRaster_DevType: { |
| SkBitmap bmp; |
| size_t rowBytes = c.fTightRowBytes ? 0 : 4 * DEV_W + 100; |
| bmp.setConfig(SkBitmap::kARGB_8888_Config, DEV_W, DEV_H, rowBytes); |
| if (!bmp.allocPixels()) { |
| return false; |
| } |
| // if rowBytes isn't tight then set the padding to a known value |
| if (rowBytes) { |
| SkAutoLockPixels alp(bmp); |
| memset(bmp.getPixels(), DEV_PAD, bmp.getSafeSize()); |
| } |
| canvas->setDevice(new SkDevice(bmp))->unref(); |
| } break; |
| case kGpu_DevType: |
| canvas->setDevice(new SkGpuDevice(grCtx, |
| SkBitmap::kARGB_8888_Config, |
| DEV_W, DEV_H))->unref(); |
| break; |
| } |
| return true; |
| } |
| |
| bool setupBitmap(SkBitmap* bitmap, |
| SkCanvas::Config8888 config8888, |
| int w, int h, |
| bool tightRowBytes) { |
| size_t rowBytes = tightRowBytes ? 0 : 4 * w + 60; |
| bitmap->setConfig(SkBitmap::kARGB_8888_Config, w, h, rowBytes); |
| if (!bitmap->allocPixels()) { |
| return false; |
| } |
| SkAutoLockPixels alp(*bitmap); |
| intptr_t pixels = reinterpret_cast<intptr_t>(bitmap->getPixels()); |
| for (int y = 0; y < h; ++y) { |
| for (int x = 0; x < w; ++x) { |
| uint32_t* pixel = reinterpret_cast<uint32_t*>(pixels + y * bitmap->rowBytes() + x * 4); |
| *pixel = getBitmapColor(x, y, w, h, config8888); |
| } |
| } |
| return true; |
| } |
| |
| void WritePixelsTest(skiatest::Reporter* reporter, GrContext* context) { |
| SkCanvas canvas; |
| |
| 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), |
| }; |
| |
| for (size_t i = 0; i < SK_ARRAY_COUNT(gCanvasConfigs); ++i) { |
| REPORTER_ASSERT(reporter, setupCanvas(&canvas, gCanvasConfigs[i], context)); |
| |
| static const SkCanvas::Config8888 gReadConfigs[] = { |
| SkCanvas::kNative_Premul_Config8888, |
| SkCanvas::kNative_Unpremul_Config8888, |
| SkCanvas::kBGRA_Premul_Config8888, |
| SkCanvas::kBGRA_Unpremul_Config8888, |
| SkCanvas::kRGBA_Premul_Config8888, |
| SkCanvas::kRGBA_Unpremul_Config8888, |
| }; |
| 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(gReadConfigs); ++c) { |
| fillCanvas(&canvas); |
| SkCanvas::Config8888 config8888 = gReadConfigs[c]; |
| SkBitmap bmp; |
| REPORTER_ASSERT(reporter, setupBitmap(&bmp, config8888, rect.width(), rect.height(), SkToBool(tightBmp))); |
| canvas.writePixels(bmp, rect.fLeft, rect.fTop, config8888); |
| REPORTER_ASSERT(reporter, checkWrite(reporter, &canvas, bmp, rect.fLeft, rect.fTop, config8888)); |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| #include "TestClassDef.h" |
| DEFINE_GPUTESTCLASS("WritePixels", WritePixelsTestClass, WritePixelsTest) |
| |
