Adding support for PVRTC, ATC, and ETC1 textures to the command buffer

gpu/command_buffer/service/feature_info.cc

 // Copyright (c) 2012 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 <set>
 
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 600 matching lines @@
     validators_.texture_parameter.AddValue(GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES);
     validators_.g_l_state.AddValue(GL_TEXTURE_BINDING_EXTERNAL_OES);
   }
 
   if (extensions.Contains("GL_OES_compressed_ETC1_RGB8_texture")) {
     AddExtensionString("GL_OES_compressed_ETC1_RGB8_texture");
     feature_flags_.oes_compressed_etc1_rgb8_texture = true;
     validators_.compressed_texture_format.AddValue(GL_ETC1_RGB8_OES);
   }
 
+  if (extensions.Contains("GL_AMD_compressed_ATC_texture")) {
+    AddExtensionString("GL_AMD_compressed_ATC_texture");
+    validators_.compressed_texture_format.AddValue(
+        GL_ATC_RGB_AMD);
+    validators_.compressed_texture_format.AddValue(
+        GL_ATC_RGBA_EXPLICIT_ALPHA_AMD);
+    validators_.compressed_texture_format.AddValue(
+        GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD);
+  }
+
+  if (extensions.Contains("GL_IMG_texture_compression_pvrtc")) {
+    AddExtensionString("GL_IMG_texture_compression_pvrtc");
+    validators_.compressed_texture_format.AddValue(
+        GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG);
+    validators_.compressed_texture_format.AddValue(
+        GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG);
+    validators_.compressed_texture_format.AddValue(
+        GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG);
+    validators_.compressed_texture_format.AddValue(
+        GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG);
+  }
+
   // Ideally we would only expose this extension on Mac OS X, to
   // support GL_CHROMIUM_iosurface and the compositor. We don't want
   // applications to start using it; they should use ordinary non-
   // power-of-two textures. However, for unit testing purposes we
   // expose it on all supported platforms.
   if (extensions.Contains("GL_ARB_texture_rectangle")) {
     AddExtensionString("GL_ARB_texture_rectangle");
     feature_flags_.arb_texture_rectangle = true;
     validators_.texture_bind_target.AddValue(GL_TEXTURE_RECTANGLE_ARB);
     // For the moment we don't add this enum to the texture_target
@@ skipping 172 matching lines @@
   if (pos == std::string::npos) {
     extensions_ += (extensions_.empty() ? "" : " ") + str;
   }
 }
 
 FeatureInfo::~FeatureInfo() {
 }
 
 }  // namespace gles2
 }  // namespace gpu