441 lines
16 KiB
C++
441 lines
16 KiB
C++
/*
|
|
* 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);
|
|
bool check = check_read_pixel(pmPixel, canvasPixel, didPremul);
|
|
REPORTER_ASSERT(reporter, check);
|
|
if (!check) {
|
|
return false;
|
|
}
|
|
}
|
|
} else if (checkBitmapPixels) {
|
|
REPORTER_ASSERT(reporter, get_dst_bmp_init_color(bx, by, bw) == *pixel);
|
|
if (get_dst_bmp_init_color(bx, by, bw) != *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 (NULL == 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);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|