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- /*
- * 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 "include/core/SkCanvas.h"
- #include "include/core/SkSurface.h"
- #include "include/private/SkColorData.h"
- #include "include/private/SkImageInfoPriv.h"
- #include "src/core/SkMathPriv.h"
- #include "tests/Test.h"
- #include "tools/ToolUtils.h"
- #include "include/gpu/GrBackendSurface.h"
- #include "include/gpu/GrContext.h"
- #include "src/gpu/GrContextPriv.h"
- #include "src/gpu/GrGpu.h"
- #include "src/gpu/GrProxyProvider.h"
- #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 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: // 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<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 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<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 (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<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 "include/core/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(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();
- 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<SkSurface> 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) {
- for (auto& origin : { kTopLeft_GrSurfaceOrigin, kBottomLeft_GrSurfaceOrigin }) {
- GrBackendTexture backendTex = context->createBackendTexture(
- DEV_W, DEV_H, kRGBA_8888_SkColorType,
- SkColors::kTransparent, GrMipMapped::kNo, GrRenderable::kYes, GrProtected::kNo);
- if (!backendTex.isValid()) {
- continue;
- }
- SkColorType colorType = kN32_SkColorType;
- sk_sp<SkSurface> 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);
- }
- context->deleteBackendTexture(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<SkSurface> create_surf(GrContext* context, int width, int height) {
- const SkImageInfo ii = SkImageInfo::Make(width, height,
- kRGBA_8888_SkColorType, kPremul_SkAlphaType);
- sk_sp<SkSurface> surf = SkSurface::MakeRenderTarget(context, SkBudgeted::kYes, ii);
- surf->flush();
- return surf;
- }
- static sk_sp<SkImage> upload(const sk_sp<SkSurface>& 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<SkSurface> dest = SkSurface::MakeRenderTarget(context, SkBudgeted::kYes, fullII);
- {
- // Seed the resource cached with a scratch texture that will be reused by writePixels
- GrSurfaceDesc desc;
- desc.fWidth = 32;
- desc.fHeight = 64;
- desc.fConfig = kRGBA_8888_GrPixelConfig;
- const GrBackendFormat format =
- context->priv().caps()->getBackendFormatFromColorType(GrColorType::kRGBA_8888);
- sk_sp<GrTextureProxy> temp = proxyProvider->createProxy(
- format, desc, GrRenderable::kNo, 1, kTopLeft_GrSurfaceOrigin, SkBackingFit::kApprox,
- SkBudgeted::kYes, GrProtected::kNo);
- temp->instantiate(context->priv().resourceProvider());
- }
- // Create the surfaces and flush them to ensure there is no lingering pendingIO
- sk_sp<SkSurface> leftSurf = create_surf(context, kHalfSize, kFullSize);
- sk_sp<SkSurface> rightSurf = create_surf(context, kHalfSize, kFullSize);
- sk_sp<SkImage> leftImg = upload(std::move(leftSurf), kLeftColor);
- dest->getCanvas()->drawImage(std::move(leftImg), 0, 0);
- sk_sp<SkImage> 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);
- }
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