Add new ASTC pixel config

src/gpu/gl/GrGLCaps.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrGLCaps.h"
 #include "GrGLContext.h"
@@ skipping 545 matching lines @@
     fLATCAlias = alias;
 
     // Check for R11_EAC
     if (kGL_GrGLStandard == standard) {
         fConfigTextureSupport[kR11_EAC_GrPixelConfig] =
             version >= GR_GL_VER(4, 3) || ctxInfo.hasExtension("GL_ARB_ES3_compatibility");
     } else {
         fConfigTextureSupport[kR11_EAC_GrPixelConfig] = version >= GR_GL_VER(3, 0);
     }
 
+    // Check for ASTC
+    fConfigTextureSupport[kASTC_12x12_GrPixelConfig] = 
+        ctxInfo.hasExtension("GL_KHR_texture_compression_astc_hdr") ||
+        ctxInfo.hasExtension("GL_KHR_texture_compression_astc_ldr") ||
+        ctxInfo.hasExtension("GL_OES_texture_compression_astc");
+
     // Check for floating point texture support
     // NOTE: We disallow floating point textures on ES devices if linear
     // filtering modes are not supported.  This is for simplicity, but a more
     // granular approach is possible.  Coincidentally, floating point textures became part of
     // the standard in ES3.1 / OGL 3.1, hence the shorthand
     bool hasFPTextures = version >= GR_GL_VER(3, 1);
     if (!hasFPTextures) {
         hasFPTextures = ctxInfo.hasExtension("GL_ARB_texture_float") ||
                         (ctxInfo.hasExtension("OES_texture_float_linear") &&
                          ctxInfo.hasExtension("GL_OES_texture_float"));
@@ skipping 251 matching lines @@
     r.appendf("Two Format Limit: %s\n", (fTwoFormatLimit ? "YES": "NO"));
     r.appendf("Fragment coord conventions support: %s\n",
              (fFragCoordsConventionSupport ? "YES": "NO"));
     r.appendf("Vertex array object support: %s\n", (fVertexArrayObjectSupport ? "YES": "NO"));
     r.appendf("Use non-VBO for dynamic data: %s\n",
              (fUseNonVBOVertexAndIndexDynamicData ? "YES" : "NO"));
     r.appendf("Full screen clear is free: %s\n", (fFullClearIsFree ? "YES" : "NO"));
     r.appendf("Drops tile on zero divide: %s\n", (fDropsTileOnZeroDivide ? "YES" : "NO"));
     return r;
 }