Added Pepper 3D device that instantiates the GPU plugin and sends GLES2 commands to it via a command buffer.

Added API for managing buffers to Pepper 3D device.

Removed DCHECK from WebPluginImpl::SetWindow that checks against a windowless plugin being given a window handle. Please check this! Now an initially windowless plugin instance gets a handle when it requests a Pepper 3D context. Perhaps the window handle should be concealed from the underlying plugin isntance.

Removed enable_gpu gyp variable and C macro. GPU code is always built on windows but not mac or linux. It is enabled at runtime with the --enable-gpu-plugin switch.

Redesigned CommandBuffer interface so it exposes shared memory through a Buffer. This was necessary because Pepper has no notion of shared memory handles. The Buffer exposes the shared memory as both a handle (through base::SharedMemory) and the mapped address and size.

Refactored CommandBufferEngine so mapped shared memory addresses and sizes are returned with a single call rather than two separate calls.
	
Added 3D demo to pepper test plugin.

TEST=try servers
BUG=none

Review URL: http://codereview.chromium.org/367002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@35185 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 29 insertions, 0 deletions

diff --git a/gpu/command_buffer/common/buffer.h b/gpu/command_buffer/common/buffer.h
new file mode 100644
index 0000000..ed3cdf5
--- /dev/null
+++ b/gpu/command_buffer/common/buffer.h
@@ -0,0 +1,29 @@
+// Copyright (c) 2009 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.
+
+#ifndef GPU_COMMAND_BUFFER_COMMON_BUFFER_H_
+#define GPU_COMMAND_BUFFER_COMMON_BUFFER_H_
+
+namespace base {
+  class SharedMemory;
+}
+
+namespace gpu {
+
+// Address and size of a buffer and optionally a shared memory object. This
+// type has value semantics.
+struct Buffer {
+  Buffer() : ptr(NULL), size(0), shared_memory(NULL) {
+  }
+
+  void* ptr;
+  size_t size;
+
+  // Null if the buffer is not shared memory or if it is not exposed as such.
+  base::SharedMemory* shared_memory;
+};
+
+}  // namespace gpu
+
+#endif  // GPU_COMMAND_BUFFER_COMMON_BUFFER_H_