Rename and document glCommandBufferEnableCHROMIUM

moved to gl2ext.h. Got rid of gles2_command_buffer.h

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/7623001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@96507 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 80 insertions, 38 deletions

diff --git a/gpu/GLES2/extensions/CHROMIUM/CHROMIUM_enable_feature.txt b/gpu/GLES2/extensions/CHROMIUM/CHROMIUM_enable_feature.txt
new file mode 100755
index 0000000..100cf0c
--- /dev/null
+++ b/gpu/GLES2/extensions/CHROMIUM/CHROMIUM_enable_feature.txt
@@ -0,0 +1,67 @@
+Name
+
+    CHROMIUM_enable_feature
+
+Name Strings
+
+    GL_CHROMIUM_enable_feature
+
+Version
+
+    Last Modifed Date: August 11, 2011
+
+Dependencies
+
+    OpenGL ES 2.0 is required.
+
+Overview
+
+    This extension allows certain optional features to be turned on in
+    the Chromium OpenGL ES 2.0 implementation.
+
+Issues
+
+
+New Tokens
+
+    None
+
+New Procedures and Functions
+
+    CommandBufferEnableCHROMIUM(const GLchar *feature)
+
+    <feature> is a null terminated string of the feature you wish to enable.
+    The requestable feature strings are as follows:
+
+    Note: If used this function MUST be called before any other GL commands
+    except GetString. Calling any other functions first will result in
+    undefined behavior.
+
+    pepper3d_allow_buffers_on_mulitple_targets
+
+    OpenGL ES 2.0 allows a single buffer to be bound to both the ARRAY_BUFFER
+    and ELEMENT_ARRAY_BUFFER bind points. By default Chromium does not allow
+    this.
+
+    This feature is only provided for full OpenGL ES 2.0 compatibility. It is
+    expensive to use and should generally be avoided.
+
+    pepper3d_support_fixed_attribs
+
+    Turns on support for the type GL_FIXED. By default this feature is off in
+    Chromium.
+
+    This feature is only provided for full OpenGL ES 2.0 compatibility. It is
+    expensive to use and should generally be avoided.
+
+Errors
+
+    None.
+
+New State
+
+    None.
+
+Revision History
+
+    8/11/2011    Documented the extension
diff --git a/gpu/GLES2/gl2ext.h b/gpu/GLES2/gl2ext.h
index 68773a4..fe9d2f4 100644
--- a/gpu/GLES2/gl2ext.h
+++ b/gpu/GLES2/gl2ext.h
@@ -1046,6 +1046,19 @@ typedef void (GL_APIENTRYP PFNGLGETPROGRAMINFOCHROMIUM) ();
 #define GL_COMPRESSED_RGBA_S3TC_DXT5_EXT  0x83F3
 #endif
 
+/* GL_CHROMIUM_enable_feature */
+#ifndef GL_CHROMIUM_enable_feature
+#define GL_CHROMIUM_enable_feature 1
+#ifdef GL_GLEXT_PROTOTYPES
+#define glEnableFeatureCHROMIUM GLES2_GET_FUN(EnableFeatureCHROMIUM)
+#if !defined(GLES2_USE_CPP_BINDINGS)
+GL_APICALL void GL_APIENTRY glEnableFeatureCHROMIUM (const GLchar *feature);
+#endif
+#else
+typedef void (GL_APIENTRYP PFNGLENABLEFEATURECHROMIUM) (const GLchar *feature);
+#endif
+#endif
+
 /* GL_ARB_robustness */
 /* This extension is subsetted for the moment, incorporating only the
  * enums necessary to describe the reasons that we might encounter for
diff --git a/gpu/GLES2/gles2_command_buffer.h b/gpu/GLES2/gles2_command_buffer.h
deleted file mode 100644
index c027afd..0000000
--- a/gpu/GLES2/gles2_command_buffer.h
+++ /dev/null
@@ -1,38 +0,0 @@
-// 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.
-
-// This file defines constants and functions for the Pepper gles2 command
-// buffers that fall outside the scope of OpenGL ES 2.0
-
-#ifndef GPU_GLES2_GLES2_COMMAND_BUFFER_H_
-#define GPU_GLES2_GLES2_COMMAND_BUFFER_H_
-
-// constants for CommandBufferEnableCHROMIUM command.
-#define PEPPER3D_ALLOW_BUFFERS_ON_MULTIPLE_TARGETS \
-    "pepper3d_allow_buffers_on_multiple_targets"
-#define PEPPER3D_SUPPORT_FIXED_ATTRIBS \
-    "pepper3d_support_fixed_attribs"
-// TODO(gman): remove this
-#define PEPPER3D_SKIP_GLSL_TRANSLATION \
-    "pepper3d_skip_glsl_translation"
-
-// TODO(gman): move this somewhere else.
-#ifndef GL_READ_ONLY
-#define GL_READ_ONLY 0x88B8
-#endif
-#ifndef GL_WRITE_ONLY
-#define GL_WRITE_ONLY 0x88B9
-#endif
-#ifndef GL_BGRA_EXT
-#define GL_BGRA_EXT 0x80E1
-#endif
-#ifndef GL_HALF_FLOAT_OES
-#define GL_HALF_FLOAT_OES 0x8D61
-#endif
-
-#endif  // GPU_GLES2_GLES2_COMMAND_BUFFER_H_
-
-
-
-