Correctly track texture cleared state for sharing

gpu/command_buffer/service/mailbox_manager_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gpu/command_buffer/service/feature_info.h"
 #include "gpu/command_buffer/service/gpu_service_test.h"
 #include "gpu/command_buffer/service/mailbox_manager_impl.h"
 #include "gpu/command_buffer/service/mailbox_manager_sync.h"
 #include "gpu/command_buffer/service/texture_manager.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 54 matching lines @@
                           internal_format,
                           width,
                           height,
                           depth,
                           border,
                           format,
                           type,
                           cleared);
   }
 
+  void SetLevelCleared(Texture* texture,
+                       GLenum target,
+                       GLint level,
+                       bool cleared) {
+    texture->SetLevelCleared(target, level, cleared);
+  }
+
   GLenum SetParameter(Texture* texture, GLenum pname, GLint param) {
     return texture->SetParameteri(feature_info_.get(), pname, param);
   }
 
   void DestroyTexture(Texture* texture) {
     delete texture;
   }
 
   scoped_refptr<MailboxManager> manager_;
 
@@ skipping 451 matching lines @@
   DestroyTexture(tmp_texture);
 
   DestroyTexture(old_texture);
   DestroyTexture(texture);
   DestroyTexture(new_texture);
 
   EXPECT_EQ(NULL, manager_->ConsumeTexture(name));
   EXPECT_EQ(NULL, manager2_->ConsumeTexture(name));
 }
 
+TEST_F(MailboxManagerSyncTest, ClearedStateSynced) {
+  const GLuint kNewTextureId = 1234;
+
+  Texture* texture = DefineTexture();
+  EXPECT_TRUE(texture->SafeToRenderFrom());
+
+  Mailbox name = Mailbox::Generate();
+
+  manager_->ProduceTexture(name, texture);
+  EXPECT_EQ(texture, manager_->ConsumeTexture(name));
+
+  // Synchronize
+  manager_->PushTextureUpdates(0);
+  manager2_->PullTextureUpdates(0);
+
+  EXPECT_CALL(*gl_, GenTextures(1, _))
+      .WillOnce(SetArgPointee<1>(kNewTextureId));
+  SetupUpdateTexParamExpectations(
+      kNewTextureId, GL_LINEAR, GL_LINEAR, GL_REPEAT, GL_REPEAT);
+  Texture* new_texture = manager2_->ConsumeTexture(name);
+  EXPECT_FALSE(new_texture == NULL);
+  EXPECT_NE(texture, new_texture);
+  EXPECT_EQ(kNewTextureId, new_texture->service_id());
+  EXPECT_TRUE(texture->SafeToRenderFrom());
+
+  // Change cleared to false.
+  SetLevelCleared(texture, texture->target(), 0, false);
+  EXPECT_FALSE(texture->SafeToRenderFrom());
+
+  // Synchronize
+  manager_->PushTextureUpdates(0);
+  SetupUpdateTexParamExpectations(
+      kNewTextureId, GL_LINEAR, GL_LINEAR, GL_REPEAT, GL_REPEAT);
+  manager2_->PullTextureUpdates(0);
+
+  // Cleared state should be synced.
+  EXPECT_FALSE(new_texture->SafeToRenderFrom());
+
+  DestroyTexture(texture);
+  DestroyTexture(new_texture);
+
+  EXPECT_EQ(NULL, manager_->ConsumeTexture(name));
+  EXPECT_EQ(NULL, manager2_->ConsumeTexture(name));
+}
+
 // Putting the same texture into multiple mailboxes should result in sharing
 // only a single texture also within a synchronized manager instance.
 TEST_F(MailboxManagerSyncTest, SharedThroughMultipleMailboxes) {
   const GLuint kNewTextureId = 1234;
   InSequence sequence;
 
   Texture* texture = DefineTexture();
   Mailbox name1 = Mailbox::Generate();
   Mailbox name2 = Mailbox::Generate();
 
@@ skipping 64 matching lines @@
 }
 
 // TODO: Produce incomplete texture
 
 // TODO: Texture::level_infos_[][].size()
 
 // TODO: unsupported targets and formats
 
 }  // namespace gles2
 }  // namespace gpu