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/*
* Copyright 2013 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 "GrContextFactory.h"
#include "GrResourceCache.h"
#include "SkGpuDevice.h"
#include "Test.h"
static const int gWidth = 640;
static const int gHeight = 480;
////////////////////////////////////////////////////////////////////////////////
static void test_cache(skiatest::Reporter* reporter,
GrContext* context,
SkCanvas* canvas) {
const SkIRect size = SkIRect::MakeWH(gWidth, gHeight);
SkBitmap src;
src.allocN32Pixels(size.width(), size.height());
src.eraseColor(SK_ColorBLACK);
size_t srcSize = src.getSize();
size_t initialCacheSize = context->getGpuTextureCacheBytes();
int oldMaxNum;
size_t oldMaxBytes;
context->getTextureCacheLimits(&oldMaxNum, &oldMaxBytes);
// Set the cache limits so we can fit 10 "src" images and the
// max number of textures doesn't matter
size_t maxCacheSize = initialCacheSize + 10*srcSize;
context->setTextureCacheLimits(1000, maxCacheSize);
SkBitmap readback;
readback.allocN32Pixels(size.width(), size.height());
for (int i = 0; i < 100; ++i) {
canvas->drawBitmap(src, 0, 0);
canvas->readPixels(size, &readback);
// "modify" the src texture
src.notifyPixelsChanged();
size_t curCacheSize = context->getGpuTextureCacheBytes();
// we should never go over the size limit
REPORTER_ASSERT(reporter, curCacheSize <= maxCacheSize);
}
context->setTextureCacheLimits(oldMaxNum, oldMaxBytes);
}
class TestResource : public GrResource {
public:
SK_DECLARE_INST_COUNT(TestResource);
explicit TestResource(GrGpu* gpu)
: INHERITED(gpu, false)
, fCache(NULL)
, fToDelete(NULL) {
++fAlive;
}
~TestResource() {
--fAlive;
if (NULL != fToDelete) {
// Breaks our little 2-element cycle below.
fToDelete->setDeleteWhenDestroyed(NULL, NULL);
fCache->deleteResource(fToDelete->getCacheEntry());
}
this->release();
}
size_t sizeInBytes() const SK_OVERRIDE { return 100; }
static int alive() { return fAlive; }
void setDeleteWhenDestroyed(GrResourceCache* cache, TestResource* resource) {
fCache = cache;
fToDelete = resource;
}
private:
GrResourceCache* fCache;
TestResource* fToDelete;
static int fAlive;
typedef GrResource INHERITED;
};
int TestResource::fAlive = 0;
static void test_purge_invalidated(skiatest::Reporter* reporter, GrContext* context) {
GrCacheID::Domain domain = GrCacheID::GenerateDomain();
GrCacheID::Key keyData;
keyData.fData64[0] = 5;
keyData.fData64[1] = 18;
GrResourceKey::ResourceType t = GrResourceKey::GenerateResourceType();
GrResourceKey key(GrCacheID(domain, keyData), t, 0);
GrResourceCache cache(5, 30000);
// Add two resources with the same key that delete each other from the cache when destroyed.
TestResource* a = new TestResource(context->getGpu());
TestResource* b = new TestResource(context->getGpu());
cache.addResource(key, a);
cache.addResource(key, b);
// Circle back.
a->setDeleteWhenDestroyed(&cache, b);
b->setDeleteWhenDestroyed(&cache, a);
a->unref();
b->unref();
// Add a third independent resource also with the same key.
GrResource* r = new TestResource(context->getGpu());
cache.addResource(key, r);
r->unref();
// Invalidate all three, all three should be purged and destroyed.
REPORTER_ASSERT(reporter, 3 == TestResource::alive());
const GrResourceInvalidatedMessage msg = { key };
SkMessageBus<GrResourceInvalidatedMessage>::Post(msg);
cache.purgeAsNeeded();
REPORTER_ASSERT(reporter, 0 == TestResource::alive());
}
static void test_cache_delete_on_destruction(skiatest::Reporter* reporter,
GrContext* context) {
GrCacheID::Domain domain = GrCacheID::GenerateDomain();
GrCacheID::Key keyData;
keyData.fData64[0] = 5;
keyData.fData64[1] = 0;
GrResourceKey::ResourceType t = GrResourceKey::GenerateResourceType();
GrResourceKey key(GrCacheID(domain, keyData), t, 0);
{
{
GrResourceCache cache(3, 30000);
TestResource* a = new TestResource(context->getGpu());
TestResource* b = new TestResource(context->getGpu());
cache.addResource(key, a);
cache.addResource(key, b);
a->setDeleteWhenDestroyed(&cache, b);
b->setDeleteWhenDestroyed(&cache, a);
a->unref();
b->unref();
REPORTER_ASSERT(reporter, 2 == TestResource::alive());
}
REPORTER_ASSERT(reporter, 0 == TestResource::alive());
}
{
GrResourceCache cache(3, 30000);
TestResource* a = new TestResource(context->getGpu());
TestResource* b = new TestResource(context->getGpu());
cache.addResource(key, a);
cache.addResource(key, b);
a->setDeleteWhenDestroyed(&cache, b);
b->setDeleteWhenDestroyed(&cache, a);
a->unref();
b->unref();
cache.deleteResource(a->getCacheEntry());
REPORTER_ASSERT(reporter, 0 == TestResource::alive());
}
}
////////////////////////////////////////////////////////////////////////////////
DEF_GPUTEST(ResourceCache, 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;
}
GrTextureDesc desc;
desc.fConfig = kSkia8888_GrPixelConfig;
desc.fFlags = kRenderTarget_GrTextureFlagBit;
desc.fWidth = gWidth;
desc.fHeight = gHeight;
SkAutoTUnref<GrTexture> texture(context->createUncachedTexture(desc, NULL, 0));
SkAutoTUnref<SkGpuDevice> device(SkNEW_ARGS(SkGpuDevice, (context, texture.get())));
SkCanvas canvas(device.get());
test_cache(reporter, context, &canvas);
test_purge_invalidated(reporter, context);
test_cache_delete_on_destruction(reporter, context);
}
}
#endif
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