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/*
* Copyright 2014 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 "GrLayerCache.h"
#include "SkPictureRecorder.h"
#include "Test.h"
class TestingAccess {
public:
static int NumLayers(GrLayerCache* cache) {
return cache->numLayers();
}
static void Purge(GrLayerCache* cache, uint32_t pictureID) {
cache->purge(pictureID);
}
};
// Add several layers to the cache
static void create_layers(skiatest::Reporter* reporter,
GrLayerCache* cache,
const SkPicture& picture,
int numToAdd,
int idOffset) {
for (int i = 0; i < numToAdd; ++i) {
GrCachedLayer* layer = cache->findLayerOrCreate(&picture,
idOffset+i+1, idOffset+i+2,
SkMatrix::I());
REPORTER_ASSERT(reporter, NULL != layer);
GrCachedLayer* temp = cache->findLayer(&picture, idOffset+i+1, idOffset+i+2, SkMatrix::I());
REPORTER_ASSERT(reporter, temp == layer);
REPORTER_ASSERT(reporter, TestingAccess::NumLayers(cache) == idOffset + i + 1);
REPORTER_ASSERT(reporter, picture.uniqueID() == layer->pictureID());
REPORTER_ASSERT(reporter, layer->start() == idOffset + i + 1);
REPORTER_ASSERT(reporter, layer->stop() == idOffset + i + 2);
REPORTER_ASSERT(reporter, layer->ctm() == SkMatrix::I());
REPORTER_ASSERT(reporter, NULL == layer->texture());
REPORTER_ASSERT(reporter, !layer->isAtlased());
}
cache->trackPicture(&picture);
}
static void lock_layer(skiatest::Reporter* reporter,
GrLayerCache* cache,
GrCachedLayer* layer) {
// Make the layer 512x512 (so it can be atlased)
GrTextureDesc desc;
desc.fWidth = 512;
desc.fHeight = 512;
desc.fConfig = kSkia8888_GrPixelConfig;
bool foundInCache = cache->lock(layer, desc);
REPORTER_ASSERT(reporter, !foundInCache);
foundInCache = cache->lock(layer, desc);
REPORTER_ASSERT(reporter, foundInCache);
REPORTER_ASSERT(reporter, NULL != layer->texture());
REPORTER_ASSERT(reporter, layer->locked());
}
// This test case exercises the public API of the GrLayerCache class.
// In particular it checks its interaction with the resource cache (w.r.t.
// locking & unlocking textures).
// TODO: need to add checks on VRAM usage!
DEF_GPUTEST(GpuLayerCache, reporter, factory) {
static const int kInitialNumLayers = 5;
for (int i= 0; i < GrContextFactory::kGLContextTypeCnt; ++i) {
GrContextFactory::GLContextType glCtxType = (GrContextFactory::GLContextType) i;
if (!GrContextFactory::IsRenderingGLContext(glCtxType)) {
continue;
}
GrContext* context = factory->get(glCtxType);
if (NULL == context) {
continue;
}
SkPictureRecorder recorder;
recorder.beginRecording(1, 1);
SkAutoTUnref<const SkPicture> picture(recorder.endRecording());
GrLayerCache cache(context);
create_layers(reporter, &cache, *picture, kInitialNumLayers, 0);
for (int i = 0; i < kInitialNumLayers; ++i) {
GrCachedLayer* layer = cache.findLayer(picture, i+1, i+2, SkMatrix::I());
REPORTER_ASSERT(reporter, NULL != layer);
lock_layer(reporter, &cache, layer);
// The first 4 layers should be in the atlas (and thus have non-empty
// rects)
if (i < 4) {
REPORTER_ASSERT(reporter, layer->isAtlased());
} else {
// The 5th layer couldn't fit in the atlas
REPORTER_ASSERT(reporter, !layer->isAtlased());
}
}
// Unlock the textures
for (int i = 0; i < kInitialNumLayers; ++i) {
GrCachedLayer* layer = cache.findLayer(picture, i+1, i+2, SkMatrix::I());
REPORTER_ASSERT(reporter, NULL != layer);
cache.unlock(layer);
}
for (int i = 0; i < kInitialNumLayers; ++i) {
GrCachedLayer* layer = cache.findLayer(picture, i+1, i+2, SkMatrix::I());
REPORTER_ASSERT(reporter, NULL != layer);
REPORTER_ASSERT(reporter, !layer->locked());
// The first 4 layers should still be in the atlas.
if (i < 4) {
REPORTER_ASSERT(reporter, NULL != layer->texture());
REPORTER_ASSERT(reporter, layer->isAtlased());
} else {
// The final layer should be unlocked.
REPORTER_ASSERT(reporter, NULL == layer->texture());
REPORTER_ASSERT(reporter, !layer->isAtlased());
}
}
{
// Add an additional layer. Since all the layers are unlocked this
// will force out the first atlased layer
create_layers(reporter, &cache, *picture, 1, kInitialNumLayers);
GrCachedLayer* layer = cache.findLayer(picture,
kInitialNumLayers+1, kInitialNumLayers+2,
SkMatrix::I());
REPORTER_ASSERT(reporter, NULL != layer);
lock_layer(reporter, &cache, layer);
cache.unlock(layer);
}
for (int i = 0; i < kInitialNumLayers+1; ++i) {
GrCachedLayer* layer = cache.findLayer(picture, i+1, i+2, SkMatrix::I());
// 3 old layers plus the new one should be in the atlas.
if (1 == i || 2 == i || 3 == i || 5 == i) {
REPORTER_ASSERT(reporter, NULL != layer);
REPORTER_ASSERT(reporter, !layer->locked());
REPORTER_ASSERT(reporter, NULL != layer->texture());
REPORTER_ASSERT(reporter, layer->isAtlased());
} else if (4 == i) {
// The one that was never atlased should still be around
REPORTER_ASSERT(reporter, NULL != layer);
REPORTER_ASSERT(reporter, NULL == layer->texture());
REPORTER_ASSERT(reporter, !layer->isAtlased());
} else {
// The one bumped out of the atlas (i.e., 0) should be gone
REPORTER_ASSERT(reporter, NULL == layer);
}
}
//--------------------------------------------------------------------
// Free them all SkGpuDevice-style. This will not free up the
// atlas' texture but will eliminate all the layers.
TestingAccess::Purge(&cache, picture->uniqueID());
REPORTER_ASSERT(reporter, TestingAccess::NumLayers(&cache) == 0);
// TODO: add VRAM/resource cache check here
//--------------------------------------------------------------------
// Test out the GrContext-style purge. This should remove all the layers
// and the atlas.
// Re-create the layers
create_layers(reporter, &cache, *picture, kInitialNumLayers, 0);
// Free them again GrContext-style. This should free up everything.
cache.freeAll();
REPORTER_ASSERT(reporter, TestingAccess::NumLayers(&cache) == 0);
// TODO: add VRAM/resource cache check here
//--------------------------------------------------------------------
// Test out the MessageBus-style purge. This will not free the atlas
// but should eliminate the free-floating layers.
create_layers(reporter, &cache, *picture, kInitialNumLayers, 0);
picture.reset(NULL);
cache.processDeletedPictures();
REPORTER_ASSERT(reporter, TestingAccess::NumLayers(&cache) == 0);
// TODO: add VRAM/resource cache check here
}
}
#endif
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