Clear render buffers

gpu/command_buffer/service/framebuffer_manager_unittest.cc

 // Copyright (c) 2010 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/framebuffer_manager.h"
 #include "app/gfx/gl/gl_mock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace gpu {
 namespace gles2 {
@@ skipping 57 matching lines @@
   ASSERT_TRUE(info1 != NULL);
   EXPECT_CALL(*gl_, DeleteFramebuffersEXT(1, ::testing::Pointee(kService1Id)))
       .Times(1)
       .RetiresOnSaturation();
   manager_.Destroy(true);
   // Check the resources were released.
   info1 = manager_.GetFramebufferInfo(kClient1Id);
   ASSERT_TRUE(info1 == NULL);
 }
 
-// TODO(gman): Write test for AttachRenderbuffer
+class FramebufferInfoTest : public testing::Test {
+ public:
+  static const GLuint kClient1Id = 1;
+  static const GLuint kService1Id = 11;
+
+  FramebufferInfoTest()
+      : manager_() {
+  }
+  ~FramebufferInfoTest() {
+    manager_.Destroy(false);
+  }
+
+ protected:
+  virtual void SetUp() {
+    gl_.reset(new ::testing::StrictMock< ::gfx::MockGLInterface>());
+    ::gfx::GLInterface::SetGLInterface(gl_.get());
+    manager_.CreateFramebufferInfo(kClient1Id, kService1Id);
+    info_ = manager_.GetFramebufferInfo(kClient1Id);
+    ASSERT_TRUE(info_ != NULL);
+  }
+
+  virtual void TearDown() {
+    ::gfx::GLInterface::SetGLInterface(NULL);
+    gl_.reset();
+  }
+
+  // Use StrictMock to make 100% sure we know how GL will be called.
+  scoped_ptr< ::testing::StrictMock< ::gfx::MockGLInterface> > gl_;
+  FramebufferManager manager_;
+  FramebufferManager::FramebufferInfo* info_;
+};
+
+// GCC requires these declarations, but MSVC requires they not be present
+#ifndef COMPILER_MSVC
+const GLuint FramebufferInfoTest::kClient1Id;
+const GLuint FramebufferInfoTest::kService1Id;
+#endif
+
+TEST_F(FramebufferInfoTest, Basic) {
+  EXPECT_EQ(kService1Id, info_->service_id());
+  EXPECT_FALSE(info_->IsDeleted());
+}
+
+TEST_F(FramebufferInfoTest, AttachRenderbuffer) {
+  const GLuint kRenderbufferClient1Id = 33;
+  const GLuint kRenderbufferService1Id = 333;
+  const GLuint kRenderbufferClient2Id = 34;
+  const GLuint kRenderbufferService2Id = 334;
+  EXPECT_FALSE(info_->HasUnclearedAttachment(GL_COLOR_ATTACHMENT0));
+  EXPECT_FALSE(info_->HasUnclearedAttachment(GL_DEPTH_ATTACHMENT));
+  EXPECT_FALSE(info_->HasUnclearedAttachment(GL_STENCIL_ATTACHMENT));
+  EXPECT_FALSE(info_->HasUnclearedAttachment(GL_DEPTH_STENCIL_ATTACHMENT));
+
+  RenderbufferManager rb_manager;
+  rb_manager.CreateRenderbufferInfo(
+      kRenderbufferClient1Id, kRenderbufferService1Id);
+  RenderbufferManager::RenderbufferInfo* rb_info1 =
+      rb_manager.GetRenderbufferInfo(kRenderbufferClient1Id);
+  ASSERT_TRUE(rb_info1 != NULL);
+
+  // check adding one attachment
+  info_->AttachRenderbuffer(GL_COLOR_ATTACHMENT0, rb_info1);
+  EXPECT_TRUE(info_->HasUnclearedAttachment(GL_COLOR_ATTACHMENT0));
+  EXPECT_FALSE(info_->HasUnclearedAttachment(GL_DEPTH_ATTACHMENT));
+
+  // check adding another
+  info_->AttachRenderbuffer(GL_DEPTH_ATTACHMENT, rb_info1);
+  EXPECT_TRUE(info_->HasUnclearedAttachment(GL_COLOR_ATTACHMENT0));
+  EXPECT_TRUE(info_->HasUnclearedAttachment(GL_DEPTH_ATTACHMENT));
+
+  // check marking them as cleared.
+  info_->MarkAttachedRenderbuffersAsCleared();
+  EXPECT_FALSE(info_->HasUnclearedAttachment(GL_COLOR_ATTACHMENT0));
+  EXPECT_FALSE(info_->HasUnclearedAttachment(GL_DEPTH_ATTACHMENT));
+
+  // Check adding one that is already cleared.
+  info_->AttachRenderbuffer(GL_STENCIL_ATTACHMENT, rb_info1);
+  EXPECT_FALSE(info_->HasUnclearedAttachment(GL_STENCIL_ATTACHMENT));
+
+  // Check marking the renderbuffer as unclared.
+  rb_info1->set_internal_format(GL_RGBA);
+  EXPECT_TRUE(info_->HasUnclearedAttachment(GL_STENCIL_ATTACHMENT));
+
+  // Clear it.
+  info_->MarkAttachedRenderbuffersAsCleared();
+  EXPECT_FALSE(info_->HasUnclearedAttachment(GL_STENCIL_ATTACHMENT));
+
+  // Check replacing an attachment
+  rb_manager.CreateRenderbufferInfo(
+      kRenderbufferClient2Id, kRenderbufferService2Id);
+  RenderbufferManager::RenderbufferInfo* rb_info2 =
+      rb_manager.GetRenderbufferInfo(kRenderbufferClient2Id);
+  ASSERT_TRUE(rb_info2 != NULL);
+
+  info_->AttachRenderbuffer(GL_STENCIL_ATTACHMENT, rb_info2);
+  EXPECT_TRUE(info_->HasUnclearedAttachment(GL_STENCIL_ATTACHMENT));
+
+  // Check removing it.
+  info_->AttachRenderbuffer(GL_STENCIL_ATTACHMENT, NULL);
+  EXPECT_FALSE(info_->HasUnclearedAttachment(GL_STENCIL_ATTACHMENT));
+
+  rb_manager.Destroy(false);
+}
 
 }  // namespace gles2
 }  // namespace gpu