Add method to GrContext to purge unlocked resources.
Beyond setting the total cache limits this method enables clients to
request to purge a specific number of bytes, as well as specify their
preference to purge scratch resources over resources of other types.
Change-Id: I9259d5544d34251575d77eebe599388f213ff3ce
Reviewed-on: https://skia-review.googlesource.com/17987
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Derek Sollenberger <djsollen@google.com>
diff --git a/src/gpu/GrResourceCache.cpp b/src/gpu/GrResourceCache.cpp
index 53a62c0..ef703e2 100644
--- a/src/gpu/GrResourceCache.cpp
+++ b/src/gpu/GrResourceCache.cpp
@@ -536,6 +536,47 @@
}
}
+void GrResourceCache::purgeUnlockedResources(size_t bytesToPurge, bool preferScratchResources) {
+
+ const size_t tmpByteBudget = SkTMax((size_t)0, fBytes - bytesToPurge);
+ bool stillOverbudget = tmpByteBudget < fBytes;
+
+ if (preferScratchResources && bytesToPurge < fPurgeableBytes) {
+ // Sort the queue
+ fPurgeableQueue.sort();
+
+ // Make a list of the scratch resources to delete
+ SkTDArray<GrGpuResource*> scratchResources;
+ size_t scratchByteCount = 0;
+ for (int i = 0; i < fPurgeableQueue.count() && stillOverbudget; i++) {
+ GrGpuResource* resource = fPurgeableQueue.at(i);
+ SkASSERT(resource->isPurgeable());
+ if (!resource->getUniqueKey().isValid()) {
+ *scratchResources.append() = resource;
+ scratchByteCount += resource->gpuMemorySize();
+ stillOverbudget = tmpByteBudget < fBytes - scratchByteCount;
+ }
+ }
+
+ // Delete the scratch resources. This must be done as a separate pass
+ // to avoid messing up the sorted order of the queue
+ for (int i = 0; i < scratchResources.count(); i++) {
+ scratchResources.getAt(i)->cacheAccess().release();
+ }
+ stillOverbudget = tmpByteBudget < fBytes;
+
+ this->validate();
+ }
+
+ // Purge any remaining resources in LRU order
+ if (stillOverbudget) {
+ const size_t cachedByteCount = fMaxBytes;
+ fMaxBytes = tmpByteBudget;
+ this->purgeAsNeeded();
+ fMaxBytes = cachedByteCount;
+ }
+}
+
void GrResourceCache::processInvalidUniqueKeys(
const SkTArray<GrUniqueKeyInvalidatedMessage>& msgs) {
for (int i = 0; i < msgs.count(); ++i) {