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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "Test.h"
#if SK_SUPPORT_GPU
#include "GrContext.h"
#include "GrGpu.h"
#include "GrTextureStripAtlas.h"
#include "GrTypes.h"
#include "SkGpuDevice.h"
// 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);
}
#endif
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