| /* |
| * 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 "SkColorPriv.h" |
| #include "SkMathPriv.h" |
| #include "SkRegion.h" |
| #include "SkSurface.h" |
| #include "Test.h" |
| |
| #if SK_SUPPORT_GPU |
| #include "GrContextFactory.h" |
| #include "SkGpuDevice.h" |
| #include "SkGr.h" |
| #endif |
| |
| 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 SkPMColor get_src_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 = 0xff; |
| switch ((x+y) % 5) { |
| case 0: |
| a = 0xff; |
| break; |
| case 1: |
| a = 0x80; |
| break; |
| case 2: |
| a = 0xCC; |
| break; |
| case 4: |
| a = 0x01; |
| break; |
| case 3: |
| a = 0x00; |
| break; |
| } |
| return SkPremultiplyARGBInline(a, r, g, b); |
| } |
| |
| static SkPMColor get_dst_bmp_init_color(int x, int y, int w) { |
| int n = y * w + x; |
| |
| U8CPU b = n & 0xff; |
| U8CPU g = (n >> 8) & 0xff; |
| U8CPU r = (n >> 16) & 0xff; |
| return SkPackARGB32(0xff, r, g , b); |
| } |
| |
| static SkPMColor convert_to_pmcolor(SkColorType ct, SkAlphaType at, const uint32_t* addr, |
| bool* doUnpremul) { |
| *doUnpremul = (kUnpremul_SkAlphaType == at); |
| |
| const uint8_t* c = reinterpret_cast<const uint8_t*>(addr); |
| U8CPU a,r,g,b; |
| switch (ct) { |
| case kBGRA_8888_SkColorType: |
| b = static_cast<U8CPU>(c[0]); |
| g = static_cast<U8CPU>(c[1]); |
| r = static_cast<U8CPU>(c[2]); |
| a = static_cast<U8CPU>(c[3]); |
| break; |
| case kRGBA_8888_SkColorType: |
| r = static_cast<U8CPU>(c[0]); |
| g = static_cast<U8CPU>(c[1]); |
| b = static_cast<U8CPU>(c[2]); |
| a = static_cast<U8CPU>(c[3]); |
| break; |
| default: |
| SkDEBUGFAIL("Unexpected colortype"); |
| return 0; |
| } |
| |
| if (*doUnpremul) { |
| r = SkMulDiv255Ceiling(r, a); |
| g = SkMulDiv255Ceiling(g, a); |
| b = SkMulDiv255Ceiling(b, a); |
| } |
| return SkPackARGB32(a, r, g, b); |
| } |
| |
| static SkBitmap make_src_bitmap() { |
| static SkBitmap bmp; |
| if (bmp.isNull()) { |
| bmp.allocN32Pixels(DEV_W, DEV_H); |
| 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 = get_src_color(x, y); |
| } |
| } |
| } |
| return bmp; |
| } |
| |
| static void fill_src_canvas(SkCanvas* canvas) { |
| canvas->save(); |
| canvas->setMatrix(SkMatrix::I()); |
| canvas->clipRect(DEV_RECT_S, SkRegion::kReplace_Op); |
| SkPaint paint; |
| paint.setXfermodeMode(SkXfermode::kSrc_Mode); |
| canvas->drawBitmap(make_src_bitmap(), 0, 0, &paint); |
| canvas->restore(); |
| } |
| |
| #if SK_SUPPORT_GPU |
| static void fill_src_texture(GrTexture* texture) { |
| SkBitmap bmp = make_src_bitmap(); |
| bmp.lockPixels(); |
| texture->writePixels(0, 0, DEV_W, DEV_H, kSkia8888_GrPixelConfig, bmp.getPixels(), |
| bmp.rowBytes()); |
| bmp.unlockPixels(); |
| } |
| #endif |
| |
| static void fill_dst_bmp_with_init_data(SkBitmap* bitmap) { |
| SkASSERT(bitmap->lockPixelsAreWritable()); |
| SkAutoLockPixels alp(*bitmap); |
| int w = bitmap->width(); |
| int h = bitmap->height(); |
| intptr_t pixels = reinterpret_cast<intptr_t>(bitmap->getPixels()); |
| for (int y = 0; y < h; ++y) { |
| for (int x = 0; x < w; ++x) { |
| SkPMColor* pixel = reinterpret_cast<SkPMColor*>(pixels + y * bitmap->rowBytes() + x * bitmap->bytesPerPixel()); |
| *pixel = get_dst_bmp_init_color(x, y, w); |
| } |
| } |
| } |
| |
| static bool check_read_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; |
| } |
| |
| // checks the bitmap contains correct pixels after the readPixels |
| // if the bitmap was prefilled with pixels it checks that these weren't |
| // overwritten in the area outside the readPixels. |
| static bool check_read(skiatest::Reporter* reporter, |
| const SkBitmap& bitmap, |
| int x, int y, |
| bool checkCanvasPixels, |
| bool checkBitmapPixels) { |
| SkASSERT(4 == bitmap.bytesPerPixel()); |
| SkASSERT(!bitmap.isNull()); |
| SkASSERT(checkCanvasPixels || checkBitmapPixels); |
| |
| const SkColorType ct = bitmap.colorType(); |
| const SkAlphaType at = bitmap.alphaType(); |
| |
| int bw = bitmap.width(); |
| int bh = bitmap.height(); |
| |
| SkIRect srcRect = SkIRect::MakeXYWH(x, y, bw, bh); |
| SkIRect clippedSrcRect = DEV_RECT; |
| if (!clippedSrcRect.intersect(srcRect)) { |
| clippedSrcRect.setEmpty(); |
| } |
| SkAutoLockPixels alp(bitmap); |
| for (int by = 0; by < bh; ++by) { |
| for (int bx = 0; bx < bw; ++bx) { |
| int devx = bx + srcRect.fLeft; |
| int devy = by + srcRect.fTop; |
| |
| const uint32_t* pixel = bitmap.getAddr32(bx, by); |
| |
| if (clippedSrcRect.contains(devx, devy)) { |
| if (checkCanvasPixels) { |
| SkPMColor canvasPixel = get_src_color(devx, devy); |
| bool didPremul; |
| SkPMColor pmPixel = convert_to_pmcolor(ct, at, pixel, &didPremul); |
| if (!check_read_pixel(pmPixel, canvasPixel, didPremul)) { |
| ERRORF(reporter, "Expected readback pixel value 0x%08x, got 0x%08x. " |
| "Readback was unpremul: %d", canvasPixel, pmPixel, didPremul); |
| return false; |
| } |
| } |
| } else if (checkBitmapPixels) { |
| uint32_t origDstPixel = get_dst_bmp_init_color(bx, by, bw); |
| if (origDstPixel != *pixel) { |
| ERRORF(reporter, "Expected clipped out area of readback to be unchanged. " |
| "Expected 0x%08x, got 0x%08x", origDstPixel, *pixel); |
| return false; |
| } |
| } |
| } |
| } |
| return true; |
| } |
| |
| enum BitmapInit { |
| kFirstBitmapInit = 0, |
| |
| kNoPixels_BitmapInit = kFirstBitmapInit, |
| kTight_BitmapInit, |
| kRowBytes_BitmapInit, |
| |
| kBitmapInitCnt |
| }; |
| |
| static BitmapInit nextBMI(BitmapInit bmi) { |
| int x = bmi; |
| return static_cast<BitmapInit>(++x); |
| } |
| |
| static void init_bitmap(SkBitmap* bitmap, const SkIRect& rect, BitmapInit init, SkColorType ct, |
| SkAlphaType at) { |
| SkImageInfo info = SkImageInfo::Make(rect.width(), rect.height(), ct, at); |
| size_t rowBytes = 0; |
| bool alloc = true; |
| switch (init) { |
| case kNoPixels_BitmapInit: |
| alloc = false; |
| case kTight_BitmapInit: |
| break; |
| case kRowBytes_BitmapInit: |
| rowBytes = (info.width() + 16) * sizeof(SkPMColor); |
| break; |
| default: |
| SkASSERT(0); |
| break; |
| } |
| |
| if (alloc) { |
| bitmap->allocPixels(info); |
| } else { |
| bitmap->setInfo(info, rowBytes); |
| } |
| } |
| |
| DEF_GPUTEST(ReadPixels, reporter, factory) { |
| 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 (int dtype = 0; dtype < 3; ++dtype) { |
| int glCtxTypeCnt = 1; |
| #if SK_SUPPORT_GPU |
| // On the GPU we will also try reading back from a non-renderable texture. |
| SkAutoTUnref<GrTexture> texture; |
| |
| if (0 != dtype) { |
| glCtxTypeCnt = GrContextFactory::kGLContextTypeCnt; |
| } |
| #endif |
| const SkImageInfo info = SkImageInfo::MakeN32Premul(DEV_W, DEV_H); |
| for (int glCtxType = 0; glCtxType < glCtxTypeCnt; ++glCtxType) { |
| SkAutoTUnref<SkSurface> surface; |
| if (0 == dtype) { |
| surface.reset(SkSurface::NewRaster(info)); |
| } else { |
| #if SK_SUPPORT_GPU |
| GrContextFactory::GLContextType type = |
| static_cast<GrContextFactory::GLContextType>(glCtxType); |
| if (!GrContextFactory::IsRenderingGLContext(type)) { |
| continue; |
| } |
| GrContext* context = factory->get(type); |
| if (nullptr == context) { |
| continue; |
| } |
| GrSurfaceDesc desc; |
| desc.fFlags = kRenderTarget_GrSurfaceFlag; |
| desc.fWidth = DEV_W; |
| desc.fHeight = DEV_H; |
| desc.fConfig = kSkia8888_GrPixelConfig; |
| desc.fOrigin = 1 == dtype ? kBottomLeft_GrSurfaceOrigin : kTopLeft_GrSurfaceOrigin; |
| SkAutoTUnref<GrTexture> surfaceTexture( |
| context->textureProvider()->createTexture(desc, false)); |
| surface.reset(SkSurface::NewRenderTargetDirect(surfaceTexture->asRenderTarget())); |
| desc.fFlags = kNone_GrSurfaceFlags; |
| |
| texture.reset(context->textureProvider()->createTexture(desc, false)); |
| #else |
| continue; |
| #endif |
| } |
| SkCanvas& canvas = *surface->getCanvas(); |
| fill_src_canvas(&canvas); |
| |
| #if SK_SUPPORT_GPU |
| if (texture) { |
| fill_src_texture(texture); |
| } |
| #endif |
| |
| static const struct { |
| SkColorType fColorType; |
| SkAlphaType fAlphaType; |
| } gReadConfigs[] = { |
| { kRGBA_8888_SkColorType, kPremul_SkAlphaType }, |
| { kRGBA_8888_SkColorType, kUnpremul_SkAlphaType }, |
| { kBGRA_8888_SkColorType, kPremul_SkAlphaType }, |
| { kBGRA_8888_SkColorType, kUnpremul_SkAlphaType }, |
| }; |
| for (size_t rect = 0; rect < SK_ARRAY_COUNT(testRects); ++rect) { |
| const SkIRect& srcRect = testRects[rect]; |
| for (BitmapInit bmi = kFirstBitmapInit; bmi < kBitmapInitCnt; bmi = nextBMI(bmi)) { |
| for (size_t c = 0; c < SK_ARRAY_COUNT(gReadConfigs); ++c) { |
| SkBitmap bmp; |
| init_bitmap(&bmp, srcRect, bmi, |
| gReadConfigs[c].fColorType, gReadConfigs[c].fAlphaType); |
| |
| // if the bitmap has pixels allocated before the readPixels, |
| // note that and fill them with pattern |
| bool startsWithPixels = !bmp.isNull(); |
| if (startsWithPixels) { |
| fill_dst_bmp_with_init_data(&bmp); |
| } |
| uint32_t idBefore = surface->generationID(); |
| bool success = canvas.readPixels(&bmp, srcRect.fLeft, srcRect.fTop); |
| uint32_t idAfter = surface->generationID(); |
| |
| // we expect to succeed when the read isn't fully clipped |
| // out. |
| bool expectSuccess = SkIRect::Intersects(srcRect, DEV_RECT); |
| // determine whether we expected the read to succeed. |
| REPORTER_ASSERT(reporter, success == expectSuccess); |
| // read pixels should never change the gen id |
| REPORTER_ASSERT(reporter, idBefore == idAfter); |
| |
| if (success || startsWithPixels) { |
| check_read(reporter, bmp, srcRect.fLeft, srcRect.fTop, |
| success, startsWithPixels); |
| } else { |
| // if we had no pixels beforehand and the readPixels |
| // failed then our bitmap should still not have pixels |
| REPORTER_ASSERT(reporter, bmp.isNull()); |
| } |
| #if SK_SUPPORT_GPU |
| // Try doing the read directly from a non-renderable texture |
| if (texture && startsWithPixels) { |
| fill_dst_bmp_with_init_data(&bmp); |
| GrPixelConfig dstConfig = |
| SkImageInfo2GrPixelConfig(gReadConfigs[c].fColorType, |
| gReadConfigs[c].fAlphaType, |
| kLinear_SkColorProfileType); |
| uint32_t flags = 0; |
| if (gReadConfigs[c].fAlphaType == kUnpremul_SkAlphaType) { |
| flags = GrContext::kUnpremul_PixelOpsFlag; |
| } |
| bmp.lockPixels(); |
| success = texture->readPixels(srcRect.fLeft, srcRect.fTop, bmp.width(), |
| bmp.height(), dstConfig, bmp.getPixels(), |
| bmp.rowBytes(), flags); |
| bmp.unlockPixels(); |
| check_read(reporter, bmp, srcRect.fLeft, srcRect.fTop, |
| success, true); |
| } |
| #endif |
| } |
| // check the old webkit version of readPixels that clips the |
| // bitmap size |
| SkBitmap wkbmp; |
| bool success = canvas.readPixels(srcRect, &wkbmp); |
| SkIRect clippedRect = DEV_RECT; |
| if (clippedRect.intersect(srcRect)) { |
| REPORTER_ASSERT(reporter, success); |
| REPORTER_ASSERT(reporter, kN32_SkColorType == wkbmp.colorType()); |
| REPORTER_ASSERT(reporter, kPremul_SkAlphaType == wkbmp.alphaType()); |
| check_read(reporter, wkbmp, clippedRect.fLeft, |
| clippedRect.fTop, true, false); |
| } else { |
| REPORTER_ASSERT(reporter, !success); |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| ///////////////////// |
| #if SK_SUPPORT_GPU |
| |
| // make_ringed_bitmap was lifted from gm/bleed.cpp, as that GM was what showed the following |
| // bug when a change was made to SkImage_Raster.cpp. It is possible that other test bitmaps |
| // would also tickle skbug.com/4351 but this one is know to do it, so I've pasted the code |
| // here so we have a dependable repro case. |
| |
| // Create a black&white checked texture with 2 1-pixel rings |
| // around the outside edge. The inner ring is red and the outer ring is blue. |
| static void make_ringed_bitmap(SkBitmap* result, int width, int height) { |
| SkASSERT(0 == width % 2 && 0 == height % 2); |
| |
| static const SkPMColor kRed = SkPreMultiplyColor(SK_ColorRED); |
| static const SkPMColor kBlue = SkPreMultiplyColor(SK_ColorBLUE); |
| static const SkPMColor kBlack = SkPreMultiplyColor(SK_ColorBLACK); |
| static const SkPMColor kWhite = SkPreMultiplyColor(SK_ColorWHITE); |
| |
| result->allocN32Pixels(width, height, true); |
| |
| SkPMColor* scanline = result->getAddr32(0, 0); |
| for (int x = 0; x < width; ++x) { |
| scanline[x] = kBlue; |
| } |
| scanline = result->getAddr32(0, 1); |
| scanline[0] = kBlue; |
| for (int x = 1; x < width - 1; ++x) { |
| scanline[x] = kRed; |
| } |
| scanline[width-1] = kBlue; |
| |
| for (int y = 2; y < height/2; ++y) { |
| scanline = result->getAddr32(0, y); |
| scanline[0] = kBlue; |
| scanline[1] = kRed; |
| for (int x = 2; x < width/2; ++x) { |
| scanline[x] = kBlack; |
| } |
| for (int x = width/2; x < width-2; ++x) { |
| scanline[x] = kWhite; |
| } |
| scanline[width-2] = kRed; |
| scanline[width-1] = kBlue; |
| } |
| |
| for (int y = height/2; y < height-2; ++y) { |
| scanline = result->getAddr32(0, y); |
| scanline[0] = kBlue; |
| scanline[1] = kRed; |
| for (int x = 2; x < width/2; ++x) { |
| scanline[x] = kWhite; |
| } |
| for (int x = width/2; x < width-2; ++x) { |
| scanline[x] = kBlack; |
| } |
| scanline[width-2] = kRed; |
| scanline[width-1] = kBlue; |
| } |
| |
| scanline = result->getAddr32(0, height-2); |
| scanline[0] = kBlue; |
| for (int x = 1; x < width - 1; ++x) { |
| scanline[x] = kRed; |
| } |
| scanline[width-1] = kBlue; |
| |
| scanline = result->getAddr32(0, height-1); |
| for (int x = 0; x < width; ++x) { |
| scanline[x] = kBlue; |
| } |
| result->setImmutable(); |
| } |
| |
| static void compare_textures(skiatest::Reporter* reporter, GrTexture* txa, GrTexture* txb) { |
| REPORTER_ASSERT(reporter, txa->width() == 2); |
| REPORTER_ASSERT(reporter, txa->height() == 2); |
| REPORTER_ASSERT(reporter, txb->width() == 2); |
| REPORTER_ASSERT(reporter, txb->height() == 2); |
| REPORTER_ASSERT(reporter, txa->config() == txb->config()); |
| |
| SkPMColor pixelsA[4], pixelsB[4]; |
| REPORTER_ASSERT(reporter, txa->readPixels(0, 0, 2, 2, txa->config(), pixelsA)); |
| REPORTER_ASSERT(reporter, txb->readPixels(0, 0, 2, 2, txa->config(), pixelsB)); |
| REPORTER_ASSERT(reporter, 0 == memcmp(pixelsA, pixelsB, sizeof(pixelsA))); |
| } |
| |
| static SkData* draw_into_surface(SkSurface* surf, const SkBitmap& bm, SkFilterQuality quality) { |
| SkCanvas* canvas = surf->getCanvas(); |
| canvas->clear(SK_ColorBLUE); |
| |
| SkPaint paint; |
| paint.setFilterQuality(quality); |
| |
| canvas->translate(40, 100); |
| canvas->rotate(30); |
| canvas->scale(20, 30); |
| canvas->translate(-SkScalarHalf(bm.width()), -SkScalarHalf(bm.height())); |
| canvas->drawBitmap(bm, 0, 0, &paint); |
| |
| SkAutoTUnref<SkImage> image(surf->newImageSnapshot()); |
| return image->encode(); |
| } |
| |
| #include "SkStream.h" |
| static void dump_to_file(const char name[], SkData* data) { |
| SkFILEWStream file(name); |
| file.write(data->data(), data->size()); |
| } |
| |
| /* |
| * Test two different ways to turn a subset of a bitmap into a texture |
| * - subset and then upload to a texture |
| * - upload to a texture and then subset |
| * |
| * These two techniques result in the same pixels (ala readPixels) |
| * but when we draw them (rotated+scaled) we don't always get the same results. |
| * |
| * skbug.com/4351 |
| */ |
| DEF_GPUTEST(ReadPixels_Subset_Gpu, reporter, factory) { |
| GrContext* ctx = factory->get(GrContextFactory::kNative_GLContextType); |
| if (!ctx) { |
| REPORTER_ASSERT(reporter, false); |
| return; |
| } |
| |
| SkBitmap bitmap; |
| make_ringed_bitmap(&bitmap, 6, 6); |
| const SkIRect subset = SkIRect::MakeLTRB(2, 2, 4, 4); |
| |
| // make two textures... |
| SkBitmap bm_subset, tx_subset; |
| |
| // ... one from a texture-subset |
| SkAutoTUnref<GrTexture> fullTx(GrRefCachedBitmapTexture(ctx, bitmap, |
| kUntiled_SkImageUsageType)); |
| SkBitmap tx_full; |
| GrWrapTextureInBitmap(fullTx, bitmap.width(), bitmap.height(), true, &tx_full); |
| tx_full.extractSubset(&tx_subset, subset); |
| |
| // ... one from a bitmap-subset |
| SkBitmap tmp_subset; |
| bitmap.extractSubset(&tmp_subset, subset); |
| SkAutoTUnref<GrTexture> subsetTx(GrRefCachedBitmapTexture(ctx, tmp_subset, |
| kUntiled_SkImageUsageType)); |
| GrWrapTextureInBitmap(subsetTx, tmp_subset.width(), tmp_subset.height(), true, &bm_subset); |
| |
| // did we get the same subset? |
| compare_textures(reporter, bm_subset.getTexture(), tx_subset.getTexture()); |
| |
| // do they draw the same? |
| const SkImageInfo info = SkImageInfo::MakeN32Premul(128, 128); |
| SkAutoTUnref<SkSurface> surfA(SkSurface::NewRenderTarget(ctx, SkSurface::kNo_Budgeted, info, 0)); |
| SkAutoTUnref<SkSurface> surfB(SkSurface::NewRenderTarget(ctx, SkSurface::kNo_Budgeted, info, 0)); |
| |
| if (false) { |
| // |
| // BUG: depending on the driver, if we calls this with various quality settings, it |
| // may fail. |
| // |
| SkFilterQuality quality = kLow_SkFilterQuality; |
| |
| SkAutoTUnref<SkData> dataA(draw_into_surface(surfA, bm_subset, quality)); |
| SkAutoTUnref<SkData> dataB(draw_into_surface(surfB, tx_subset, quality)); |
| |
| REPORTER_ASSERT(reporter, dataA->equals(dataB)); |
| if (false) { |
| dump_to_file("test_image_A.png", dataA); |
| dump_to_file("test_image_B.png", dataB); |
| } |
| } |
| } |
| #endif |