/*
* 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 "GrContext.h"
#include "SkGr.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 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,
kRowBytesOdd_BitmapInit,
kLastAligned_BitmapInit = kRowBytes_BitmapInit,
#if 0 // THIS CAUSES ERRORS ON WINDOWS AND SOME ANDROID DEVICES
kLast_BitmapInit = kRowBytesOdd_BitmapInit
#else
kLast_BitmapInit = kLastAligned_BitmapInit
#endif
};
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;
case kRowBytesOdd_BitmapInit:
rowBytes = (info.width() * sizeof(SkPMColor)) + 3;
break;
default:
SkASSERT(0);
break;
}
if (alloc) {
bitmap->allocPixels(info, rowBytes);
} else {
bitmap->setInfo(info, rowBytes);
}
}
static const struct {
SkColorType fColorType;
SkAlphaType fAlphaType;
} gReadPixelsConfigs[] = {
{ kRGBA_8888_SkColorType, kPremul_SkAlphaType },
{ kRGBA_8888_SkColorType, kUnpremul_SkAlphaType },
{ kBGRA_8888_SkColorType, kPremul_SkAlphaType },
{ kBGRA_8888_SkColorType, kUnpremul_SkAlphaType },
};
const SkIRect gReadPixelsTestRects[] = {
// 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),
};
static void test_readpixels(skiatest::Reporter* reporter, SkSurface* surface,
BitmapInit lastBitmapInit) {
SkCanvas* canvas = surface->getCanvas();
fill_src_canvas(canvas);
for (size_t rect = 0; rect < SK_ARRAY_COUNT(gReadPixelsTestRects); ++rect) {
const SkIRect& srcRect = gReadPixelsTestRects[rect];
for (BitmapInit bmi = kFirstBitmapInit; bmi <= lastBitmapInit; bmi = nextBMI(bmi)) {
for (size_t c = 0; c < SK_ARRAY_COUNT(gReadPixelsConfigs); ++c) {
SkBitmap bmp;
init_bitmap(&bmp, srcRect, bmi,
gReadPixelsConfigs[c].fColorType, gReadPixelsConfigs[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());
}
}
// 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);
}
}
}
}
DEF_TEST(ReadPixels, reporter) {
const SkImageInfo info = SkImageInfo::MakeN32Premul(DEV_W, DEV_H);
SkAutoTUnref<SkSurface> surface(SkSurface::NewRaster(info));
// SW readback fails a premul check when reading back to an unaligned rowbytes.
test_readpixels(reporter, surface, kLastAligned_BitmapInit);
}
#if SK_SUPPORT_GPU
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ReadPixels_Gpu, reporter, context) {
for (auto& origin : {kBottomLeft_GrSurfaceOrigin, kTopLeft_GrSurfaceOrigin}) {
GrSurfaceDesc desc;
desc.fFlags = kRenderTarget_GrSurfaceFlag;
desc.fWidth = DEV_W;
desc.fHeight = DEV_H;
desc.fConfig = kSkia8888_GrPixelConfig;
desc.fOrigin = origin;
SkAutoTUnref<GrTexture> surfaceTexture(
context->textureProvider()->createTexture(desc, SkBudgeted::kNo));
SkAutoTUnref<SkSurface> surface(SkSurface::NewRenderTargetDirect(surfaceTexture->asRenderTarget()));
desc.fFlags = kNone_GrSurfaceFlags;
test_readpixels(reporter, surface, kLast_BitmapInit);
}
}
#endif
#if SK_SUPPORT_GPU
static void test_readpixels_texture(skiatest::Reporter* reporter, GrTexture* texture) {
fill_src_texture(texture);
for (size_t rect = 0; rect < SK_ARRAY_COUNT(gReadPixelsTestRects); ++rect) {
const SkIRect& srcRect = gReadPixelsTestRects[rect];
for (BitmapInit bmi = kFirstBitmapInit; bmi <= kLast_BitmapInit; bmi = nextBMI(bmi)) {
for (size_t c = 0; c < SK_ARRAY_COUNT(gReadPixelsConfigs); ++c) {
SkBitmap bmp;
init_bitmap(&bmp, srcRect, bmi,
gReadPixelsConfigs[c].fColorType, gReadPixelsConfigs[c].fAlphaType);
// if the bitmap has pixels allocated before the readPixels,
// note that and fill them with pattern
bool startsWithPixels = !bmp.isNull();
// Try doing the read directly from a non-renderable texture
if (startsWithPixels) {
fill_dst_bmp_with_init_data(&bmp);
GrPixelConfig dstConfig =
SkImageInfo2GrPixelConfig(gReadPixelsConfigs[c].fColorType,
gReadPixelsConfigs[c].fAlphaType,
kLinear_SkColorProfileType);
uint32_t flags = 0;
if (gReadPixelsConfigs[c].fAlphaType == kUnpremul_SkAlphaType) {
flags = GrContext::kUnpremul_PixelOpsFlag;
}
bmp.lockPixels();
bool 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);
}
}
}
}
}
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(ReadPixels_Texture, reporter, context) {
// On the GPU we will also try reading back from a non-renderable texture.
for (auto& origin : {kBottomLeft_GrSurfaceOrigin, kTopLeft_GrSurfaceOrigin}) {
SkAutoTUnref<GrTexture> texture;
GrSurfaceDesc desc;
desc.fFlags = kRenderTarget_GrSurfaceFlag;
desc.fWidth = DEV_W;
desc.fHeight = DEV_H;
desc.fConfig = kSkia8888_GrPixelConfig;
desc.fOrigin = origin;
desc.fFlags = kNone_GrSurfaceFlags;
texture.reset(context->textureProvider()->createTexture(desc, SkBudgeted::kNo));
test_readpixels_texture(reporter, texture);
}
}
#endif
/////////////////////
#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 https://bug.skia.org/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.
*
* https://bug.skia.org/4351
*/
DEF_GPUTEST_FOR_NATIVE_CONTEXT(ReadPixels_Subset_Gpu, reporter, context) {
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(context, bitmap,
GrTextureParams::ClampNoFilter()));
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(context, tmp_subset,
GrTextureParams::ClampNoFilter()));
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(context, SkBudgeted::kNo, info, 0));
SkAutoTUnref<SkSurface> surfB(SkSurface::NewRenderTarget(context, SkBudgeted::kNo, 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