GL_ATC_RGBA_EXPLICIT_ALPHA_AMD  171 ppapi/lib/gl/include/GLES2/gl2ext.h #define GL_ATC_RGBA_EXPLICIT_ALPHA_AMD                          0x8C93
GL_ATC_RGBA_EXPLICIT_ALPHA_AMD  409 third_party/khronos/GLES2/gl2ext.h #define GL_ATC_RGBA_EXPLICIT_ALPHA_AMD    0x8C93