Partial raster for GPU

cc/resources/resource_pool_unittest.cc

Index: cc/resources/resource_pool_unittest.cc
diff --git a/cc/resources/resource_pool_unittest.cc b/cc/resources/resource_pool_unittest.cc
index d9025c621b11f94bf2e30afa11096a9160c9d34a..af14a604c5d43af3a09126707caf491bf80a176a 100644
--- a/cc/resources/resource_pool_unittest.cc
+++ b/cc/resources/resource_pool_unittest.cc
@@ -49,7 +49,7 @@ TEST_F(ResourcePoolTest, AcquireRelease) {
   EXPECT_EQ(format, resource->format());
   EXPECT_TRUE(resource_provider_->CanLockForWrite(resource->id()));
 
-  resource_pool_->ReleaseResource(resource, 0u);
+  resource_pool_->ReleaseResource(resource);
 }
 
 TEST_F(ResourcePoolTest, AccountingSingleResource) {
@@ -70,7 +70,7 @@ TEST_F(ResourcePoolTest, AccountingSingleResource) {
   EXPECT_EQ(1u, resource_pool_->resource_count());
   EXPECT_EQ(0u, resource_pool_->GetBusyResourceCountForTesting());
 
-  resource_pool_->ReleaseResource(resource, 0u);
+  resource_pool_->ReleaseResource(resource);
   EXPECT_EQ(resource_bytes, resource_pool_->GetTotalMemoryUsageForTesting());
   EXPECT_EQ(1u, resource_pool_->GetTotalResourceCountForTesting());
   EXPECT_EQ(1u, resource_pool_->GetBusyResourceCountForTesting());
@@ -101,21 +101,21 @@ TEST_F(ResourcePoolTest, SimpleResourceReuse) {
   ResourceFormat format = RGBA_8888;
 
   Resource* resource = resource_pool_->AcquireResource(size, format);
-  resource_pool_->ReleaseResource(resource, 0u);
+  resource_pool_->ReleaseResource(resource);
   resource_pool_->CheckBusyResources();
   EXPECT_EQ(1u, resource_provider_->num_resources());
 
   // Same size/format should re-use resource.
   resource = resource_pool_->AcquireResource(size, format);
   EXPECT_EQ(1u, resource_provider_->num_resources());
-  resource_pool_->ReleaseResource(resource, 0u);
+  resource_pool_->ReleaseResource(resource);
   resource_pool_->CheckBusyResources();
   EXPECT_EQ(1u, resource_provider_->num_resources());
 
   // Different size/format should alloate new resource.
   resource = resource_pool_->AcquireResource(gfx::Size(50, 50), LUMINANCE_8);
   EXPECT_EQ(2u, resource_provider_->num_resources());
-  resource_pool_->ReleaseResource(resource, 0u);
+  resource_pool_->ReleaseResource(resource);
   resource_pool_->CheckBusyResources();
   EXPECT_EQ(2u, resource_provider_->num_resources());
 }
@@ -133,7 +133,7 @@ TEST_F(ResourcePoolTest, LostResource) {
   EXPECT_EQ(1u, resource_provider_->num_resources());
 
   resource_provider_->LoseResourceForTesting(resource->id());
-  resource_pool_->ReleaseResource(resource, 0u);
+  resource_pool_->ReleaseResource(resource);
   resource_pool_->CheckBusyResources();
   EXPECT_EQ(0u, resource_provider_->num_resources());
 }
@@ -157,7 +157,7 @@ TEST_F(ResourcePoolTest, BusyResourcesEventuallyFreed) {
   EXPECT_EQ(40000u, resource_pool_->GetTotalMemoryUsageForTesting());
   EXPECT_EQ(1u, resource_pool_->resource_count());
 
-  resource_pool_->ReleaseResource(resource, 0u);
+  resource_pool_->ReleaseResource(resource);
   EXPECT_EQ(1u, resource_provider_->num_resources());
   EXPECT_EQ(40000u, resource_pool_->GetTotalMemoryUsageForTesting());
   EXPECT_EQ(0u, resource_pool_->memory_usage_bytes());
@@ -195,7 +195,7 @@ TEST_F(ResourcePoolTest, UnusedResourcesEventuallyFreed) {
   EXPECT_EQ(1u, resource_pool_->GetTotalResourceCountForTesting());
   EXPECT_EQ(1u, resource_pool_->resource_count());
 
-  resource_pool_->ReleaseResource(resource, 0u);
+  resource_pool_->ReleaseResource(resource);
   EXPECT_EQ(1u, resource_provider_->num_resources());
   EXPECT_EQ(40000u, resource_pool_->GetTotalMemoryUsageForTesting());
   EXPECT_EQ(1u, resource_pool_->GetTotalResourceCountForTesting());
@@ -220,5 +220,70 @@ TEST_F(ResourcePoolTest, UnusedResourcesEventuallyFreed) {
   EXPECT_EQ(0u, resource_pool_->GetTotalMemoryUsageForTesting());
 }
 
+TEST_F(ResourcePoolTest, UpdateContentId) {
+  gfx::Size size(100, 100);
+  ResourceFormat format = RGBA_8888;
+  uint64_t content_id = 42;
+  uint64_t new_content_id = 43;
+  gfx::Rect new_invalidated_rect(20, 20, 10, 10);
+
+  Resource* resource = resource_pool_->AcquireResource(size, format);
+  resource_pool_->OnContentReplaced(resource->id(), content_id);
+  resource_pool_->ReleaseResource(resource);
+  resource_pool_->CheckBusyResources();
+
+  // Ensure that we can retrieve the resource based on |content_id|.
+  gfx::Rect invalidated_rect;
+  Resource* reacquired_resource =
+      resource_pool_->TryAcquireResourceForPartialRaster(
+          new_content_id, new_invalidated_rect, content_id, &invalidated_rect);
+  EXPECT_EQ(resource, reacquired_resource);
+  EXPECT_EQ(new_invalidated_rect, invalidated_rect);
+  resource_pool_->ReleaseResource(reacquired_resource);
+}
+
+TEST_F(ResourcePoolTest, UpdateContentIdAndInvalidatedRect) {
+  gfx::Size size(100, 100);
+  ResourceFormat format = RGBA_8888;
+  uint64_t content_ids[] = {42, 43, 44};
+  gfx::Rect invalidated_rect(20, 20, 10, 10);
+  gfx::Rect second_invalidated_rect(25, 25, 10, 10);
+  gfx::Rect expected_total_invalidated_rect(20, 20, 15, 15);
+
+  // Acquire a new resource with the first content id.
+  Resource* resource = resource_pool_->AcquireResource(size, format);
+  resource_pool_->OnContentReplaced(resource->id(), content_ids[0]);
+
+  // Attempt to acquire this resource. It is in use, so its ID and invalidated
+  // rect should be updated, but a new resource will be returned.
+  gfx::Rect new_invalidated_rect;
+  Resource* reacquired_resource =
+      resource_pool_->TryAcquireResourceForPartialRaster(
+          content_ids[1], invalidated_rect, content_ids[0],
+          &new_invalidated_rect);
+  EXPECT_EQ(nullptr, reacquired_resource);
+  EXPECT_EQ(gfx::Rect(), new_invalidated_rect);
+
+  // Release the original resource, returning it to the unused pool.
+  resource_pool_->ReleaseResource(resource);
+  resource_pool_->CheckBusyResources();
+
+  // Ensure that we cannot retrieve a resource based on the original content id.
+  reacquired_resource = resource_pool_->TryAcquireResourceForPartialRaster(
+      content_ids[1], invalidated_rect, content_ids[0], &new_invalidated_rect);
+  EXPECT_EQ(nullptr, reacquired_resource);
+  EXPECT_EQ(gfx::Rect(), new_invalidated_rect);
+
+  // Ensure that we can retrieve the resource based on the second (updated)
+  // content ID and that it has the expected invalidated rect.
+  gfx::Rect total_invalidated_rect;
+  reacquired_resource = resource_pool_->TryAcquireResourceForPartialRaster(
+      content_ids[2], second_invalidated_rect, content_ids[1],
+      &total_invalidated_rect);
+  EXPECT_EQ(resource, reacquired_resource);
+  EXPECT_EQ(expected_total_invalidated_rect, total_invalidated_rect);
+  resource_pool_->ReleaseResource(reacquired_resource);
+}
+
 }  // namespace
 }  // namespace cc