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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#if SK_SUPPORT_GPU
#include "GrContext.h"
#include "GrContextFactory.h"
#include "SkBitmap.h"
#include "SkCanvas.h"
#include "SkColor.h"
#include "SkGpuDevice.h"
#include "SkPaint.h"
#include "SkPixelRef.h"
#include "SkRect.h"
#include "Test.h"
static const char* boolStr(bool value) {
return value ? "true" : "false";
}
// these are in the same order as the SkBitmap::Config enum
static const char* gConfigName[] = {
"None", "4444", "8888"
};
struct Pair {
SkBitmap::Config fConfig;
const char* fValid;
};
/**
* Check to ensure that copying a GPU-backed SkBitmap behaved as expected.
* @param reporter Used to report failures.
* @param desiredConfig Config being copied to. If the copy succeeded, dst must have this Config.
* @param success True if the copy succeeded.
* @param src A GPU-backed SkBitmap that had copyTo or deepCopyTo called on it.
* @param dst SkBitmap that was copied to.
* @param deepCopy True if deepCopyTo was used; false if copyTo was used.
*/
static void TestIndividualCopy(skiatest::Reporter* reporter, const SkBitmap::Config desiredConfig,
const bool success, const SkBitmap& src, const SkBitmap& dst,
const bool deepCopy = true) {
if (success) {
REPORTER_ASSERT(reporter, src.width() == dst.width());
REPORTER_ASSERT(reporter, src.height() == dst.height());
REPORTER_ASSERT(reporter, dst.config() == desiredConfig);
if (src.config() == dst.config()) {
// FIXME: When calling copyTo (so deepCopy is false here), sometimes we copy the pixels
// exactly, in which case the IDs should be the same, but sometimes we do a bitmap draw,
// in which case the IDs should not be the same. Is there any way to determine which is
// the case at this point?
if (deepCopy) {
REPORTER_ASSERT(reporter, src.getGenerationID() == dst.getGenerationID());
}
REPORTER_ASSERT(reporter, src.pixelRef() != NULL && dst.pixelRef() != NULL);
// Do read backs and make sure that the two are the same.
SkBitmap srcReadBack, dstReadBack;
{
SkASSERT(src.getTexture() != NULL);
bool readBack = src.pixelRef()->readPixels(&srcReadBack);
REPORTER_ASSERT(reporter, readBack);
}
if (dst.getTexture() != NULL) {
bool readBack = dst.pixelRef()->readPixels(&dstReadBack);
REPORTER_ASSERT(reporter, readBack);
} else {
// If dst is not a texture, do a copy instead, to the same config as srcReadBack.
bool copy = dst.copyTo(&dstReadBack, srcReadBack.config());
REPORTER_ASSERT(reporter, copy);
}
SkAutoLockPixels srcLock(srcReadBack);
SkAutoLockPixels dstLock(dstReadBack);
REPORTER_ASSERT(reporter, srcReadBack.readyToDraw() && dstReadBack.readyToDraw());
const char* srcP = static_cast<const char*>(srcReadBack.getAddr(0, 0));
const char* dstP = static_cast<const char*>(dstReadBack.getAddr(0, 0));
REPORTER_ASSERT(reporter, srcP != dstP);
REPORTER_ASSERT(reporter, !memcmp(srcP, dstP, srcReadBack.getSize()));
} else {
REPORTER_ASSERT(reporter, src.getGenerationID() != dst.getGenerationID());
}
} else {
// dst should be unchanged from its initial state
REPORTER_ASSERT(reporter, dst.config() == SkBitmap::kNo_Config);
REPORTER_ASSERT(reporter, dst.width() == 0);
REPORTER_ASSERT(reporter, dst.height() == 0);
}
}
// Stripped down version of TestBitmapCopy that checks basic fields (width, height, config, genID)
// to ensure that they were copied properly.
static void TestGpuBitmapCopy(skiatest::Reporter* reporter, GrContextFactory* factory) {
#ifdef SK_BUILD_FOR_ANDROID // https://code.google.com/p/skia/issues/detail?id=753
return;
#endif
for (int type = 0; type < GrContextFactory::kLastGLContextType; ++type) {
GrContextFactory::GLContextType glType = static_cast<GrContextFactory::GLContextType>(type);
if (!GrContextFactory::IsRenderingGLContext(glType)) {
continue;
}
GrContext* grContext = factory->get(glType);
if (NULL == grContext) {
continue;
}
if (NULL == grContext) {
return;
}
static const Pair gPairs[] = {
{ SkBitmap::kNo_Config, "000" },
{ SkBitmap::kARGB_4444_Config, "011" },
{ SkBitmap::kARGB_8888_Config, "011" },
};
const int W = 20;
const int H = 33;
for (size_t i = 0; i < SK_ARRAY_COUNT(gPairs); i++) {
SkBitmap src, dst;
SkGpuDevice* device = SkNEW_ARGS(SkGpuDevice, (grContext, gPairs[i].fConfig, W, H));
SkAutoUnref aur(device);
src = device->accessBitmap(false);
device->clear(SK_ColorWHITE);
// Draw something different to the same portion of the bitmap that we will extract as a
// subset, so that comparing the pixels of the subset will be meaningful.
SkIRect subsetRect = SkIRect::MakeLTRB(W/2, H/2, W, H);
SkCanvas drawingCanvas(device);
SkPaint paint;
paint.setColor(SK_ColorRED);
drawingCanvas.drawRect(SkRect::MakeFromIRect(subsetRect), paint);
// Extract a subset. If this succeeds we will test copying the subset.
SkBitmap subset;
const bool extracted = src.extractSubset(&subset, subsetRect);
for (size_t j = 0; j < SK_ARRAY_COUNT(gPairs); j++) {
dst.reset();
bool success = src.deepCopyTo(&dst, gPairs[j].fConfig);
bool expected = gPairs[i].fValid[j] != '0';
if (success != expected) {
SkString str;
str.printf("SkBitmap::deepCopyTo from %s to %s. expected %s returned %s",
gConfigName[i], gConfigName[j], boolStr(expected),
boolStr(success));
reporter->reportFailed(str);
}
bool canSucceed = src.canCopyTo(gPairs[j].fConfig);
if (success != canSucceed) {
SkString str;
str.printf("SkBitmap::deepCopyTo from %s to %s returned %s,"
"but canCopyTo returned %s",
gConfigName[i], gConfigName[j], boolStr(success),
boolStr(canSucceed));
reporter->reportFailed(str);
}
TestIndividualCopy(reporter, gPairs[j].fConfig, success, src, dst);
// Test copying the subset bitmap, using both copyTo and deepCopyTo.
if (extracted) {
SkBitmap subsetCopy;
success = subset.copyTo(&subsetCopy, gPairs[j].fConfig);
REPORTER_ASSERT(reporter, success == expected);
REPORTER_ASSERT(reporter, success == canSucceed);
TestIndividualCopy(reporter, gPairs[j].fConfig, success, subset, subsetCopy,
false);
// Reset the bitmap so that a failed copyTo will leave it in the expected state.
subsetCopy.reset();
success = subset.deepCopyTo(&subsetCopy, gPairs[j].fConfig);
REPORTER_ASSERT(reporter, success == expected);
REPORTER_ASSERT(reporter, success == canSucceed);
TestIndividualCopy(reporter, gPairs[j].fConfig, success, subset, subsetCopy,
true);
}
} // for (size_t j = ...
} // for (size_t i = ...
} // GrContextFactory::GLContextType
}
#include "TestClassDef.h"
DEFINE_GPUTESTCLASS("GpuBitmapCopy", TestGpuBitmapCopyClass, TestGpuBitmapCopy)
#endif
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