// This tests that GrTextureStripAtlas flushes pending IO on the texture it acquires.
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(GrTextureStripAtlasFlush, reporter, ctxInfo) {
GrContext* context = ctxInfo.grContext();
GrSurfaceDesc desc;
desc.fWidth = 32;
desc.fHeight = 32;
desc.fConfig = kRGBA_8888_GrPixelConfig;
GrTexture* texture = context->textureProvider()->createTexture(desc, SkBudgeted::kYes,
nullptr, 0);
GrSurfaceDesc targetDesc = desc;
targetDesc.fFlags = kRenderTarget_GrSurfaceFlag;
GrTexture* target = context->textureProvider()->createTexture(targetDesc, SkBudgeted::kYes,
nullptr, 0);
SkAutoTMalloc<uint32_t> pixels(desc.fWidth * desc.fHeight);
memset(pixels.get(), 0xFF, sizeof(uint32_t) * desc.fWidth * desc.fHeight);
texture->writePixels(0, 0, desc.fWidth, desc.fHeight, kRGBA_8888_GrPixelConfig, pixels.get());
// Add a pending read to the texture, and then make it available for reuse.
context->copySurface(target, texture);
texture->unref();
// Create an atlas with parameters that allow it to reuse the texture.
GrTextureStripAtlas::Desc atlasDesc;
atlasDesc.fContext = context;
atlasDesc.fConfig = desc.fConfig;
atlasDesc.fWidth = desc.fWidth;
atlasDesc.fHeight = desc.fHeight;
atlasDesc.fRowHeight = 1;
GrTextureStripAtlas* atlas = GrTextureStripAtlas::GetAtlas(atlasDesc);
// Write to the atlas' texture.
SkImageInfo info = SkImageInfo::MakeN32(desc.fWidth, desc.fHeight, kPremul_SkAlphaType);
size_t rowBytes = desc.fWidth * GrBytesPerPixel(desc.fConfig);
SkBitmap bitmap;
bitmap.allocPixels(info, rowBytes);
memset(bitmap.getPixels(), 1, rowBytes * desc.fHeight);
int row = atlas->lockRow(bitmap);
if (!context->caps()->preferVRAMUseOverFlushes())
REPORTER_ASSERT(reporter, texture == atlas->getTexture());
// The atlas' use of its texture shouldn't change which pixels got copied to the target.
SkAutoTMalloc<uint32_t> actualPixels(desc.fWidth * desc.fHeight);
bool success = target->readPixels(0, 0, desc.fWidth, desc.fHeight, kRGBA_8888_GrPixelConfig,
actualPixels.get());
REPORTER_ASSERT(reporter, success);
REPORTER_ASSERT(reporter,
!memcmp(pixels.get(), actualPixels.get(),
sizeof(uint32_t) * desc.fWidth * desc.fHeight));
target->unref();
atlas->unlockRow(row);
}
DEF_GPUTEST(ReadWriteAlpha, reporter, factory) {
for (int type = 0; type < GrContextFactory::kLastGLContextType; ++type) {
GrContextFactory::GLContextType glType = static_cast<GrContextFactory::GLContextType>(type);
if (!GrContextFactory::IsRenderingGLContext(glType)) {
continue;
}
GrContext* context = factory->get(glType);
if (NULL == context) {
continue;
}
unsigned char textureData[X_SIZE][Y_SIZE];
memset(textureData, 0, X_SIZE * Y_SIZE);
GrSurfaceDesc desc;
// let Skia know we will be using this texture as a render target
desc.fFlags = kRenderTarget_GrSurfaceFlag;
// it is a single channel texture
desc.fConfig = kAlpha_8_GrPixelConfig;
desc.fWidth = X_SIZE;
desc.fHeight = Y_SIZE;
// We are initializing the texture with zeros here
GrTexture* texture = context->createTexture(desc, false, textureData, 0);
if (!texture) {
return;
}
SkAutoTUnref<GrTexture> au(texture);
// create a distinctive texture
for (int y = 0; y < Y_SIZE; ++y) {
for (int x = 0; x < X_SIZE; ++x) {
textureData[x][y] = x*Y_SIZE+y;
}
}
// upload the texture
texture->writePixels(0, 0, desc.fWidth, desc.fHeight, desc.fConfig,
textureData, 0);
unsigned char readback[X_SIZE][Y_SIZE];
// clear readback to something non-zero so we can detect readback failures
memset(readback, 0x1, X_SIZE * Y_SIZE);
// read the texture back
texture->readPixels(0, 0, desc.fWidth, desc.fHeight, desc.fConfig,
readback, 0);
// make sure the original & read back versions match
bool match = true;
for (int y = 0; y < Y_SIZE; ++y) {
for (int x = 0; x < X_SIZE; ++x) {
if (textureData[x][y] != readback[x][y]) {
match = false;
}
}
}
REPORTER_ASSERT(reporter, match);
// Now try writing on the single channel texture
SkSurfaceProps props(SkSurfaceProps::kLegacyFontHost_InitType);
SkAutoTUnref<SkBaseDevice> device(SkGpuDevice::Create(texture->asRenderTarget(), &props));
SkCanvas canvas(device);
SkPaint paint;
const SkRect rect = SkRect::MakeLTRB(-10, -10, X_SIZE + 10, Y_SIZE + 10);
paint.setColor(SK_ColorWHITE);
canvas.drawRect(rect, paint);
texture->readPixels(0, 0, desc.fWidth, desc.fHeight, desc.fConfig,
readback, 0);
match = true;
for (int y = 0; y < Y_SIZE; ++y) {
for (int x = 0; x < X_SIZE; ++x) {
if (0xFF != readback[x][y]) {
match = false;
}
}
}
REPORTER_ASSERT(reporter, match);
}
}
