Expose DXT3 and DXT5 through ANGLE

gpu/GLES2/gl2ext.h

 #ifndef __gl2ext_h_
 #define __gl2ext_h_
 
 /* $Revision: 10969 $ on $Date:: 2010-04-09 02:27:15 -0700 #$ */
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 /*
@@ skipping 1016 matching lines @@
 /*
  * This extension provides GL_UNPACK_FLIP_Y_CHROMIUM as a parameter to
  * glPixelStorei. When true images submitted to glTexImage2D and glTexSubImage2D
  * are flipped vertically.
  */
 #ifndef GL_CHROMIUM_flipy
 #define GL_CHROMIUM_flipy 1
 #define GL_UNPACK_FLIP_Y_CHROMIUM 0x9240
 #endif
 
+/* GL_CHROMIUM_texture_compression_dxt3 */
+#ifndef GL_CHROMIUM_texture_compression_dxt3
+#define GL_CHROMIUM_texture_compression_dxt3 1
+#define GL_COMPRESSED_RGBA_S3TC_DXT3_EXT  0x83F2
+#endif
+
+/* GL_CHROMIUM_texture_compression_dxt5 */
+#ifndef GL_CHROMIUM_texture_compression_dxt5
+#define GL_CHROMIUM_texture_compression_dxt5 1
+#define GL_COMPRESSED_RGBA_S3TC_DXT5_EXT  0x83F3
+#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
  * losing the context. The entry point querying the reset status is
  * not yet incorporated; to do so, a spec will be needed of a GLES2
  * subset of GL_ARB_robustness.
  */
 #ifndef GL_ARB_robustness
 #define GL_ARB_robustness 1
 #ifndef GL_GUILTY_CONTEXT_RESET_ARB
 #define GL_GUILTY_CONTEXT_RESET_ARB 0x8253
 #endif
 #ifndef GL_INNOCENT_CONTEXT_RESET_ARB
 #define GL_INNOCENT_CONTEXT_RESET_ARB 0x8254
 #endif
 #ifndef GL_UNKNOWN_CONTEXT_RESET_ARB
 #define GL_UNKNOWN_CONTEXT_RESET_ARB 0x8255
 #endif
 #endif
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif /* __gl2ext_h_ */