disable floating point textures if GLSL version is < 330

src/gpu/gl/GrGLContext.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrGLContext.h"
 
 ////////////////////////////////////////////////////////////////////////////////
@@ skipping 22 matching lines @@
     if (GR_GL_INVALID_VER == args.fGLVersion) {
         return NULL;
     }
 
     if (!GrGetGLSLGeneration(interface, &args.fGLSLGeneration)) {
         return NULL;
     }
 
     args.fVendor = GrGLGetVendor(interface);
 
+    args.fRenderer = GrGLGetRendererFromString(renderer);
+
     /*
-     * Qualcomm drivers have a horrendous bug with some drivers. Though they claim to
-     * support GLES 3.00, some perfectly valid GLSL300 shaders will only compile with
+     * Qualcomm drivers for the 3xx series have a horrendous bug with some drivers. Though they
+     * claim to support GLES 3.00, some perfectly valid GLSL300 shaders will only compile with
      * #version 100, and will fail to compile with #version 300 es.  In the long term, we
      * need to lock this down to a specific driver version.
+     * ?????/2015 - This bug is still present in Lollipop pre-mr1
+     * 06/18/2015 - This bug does not affect the nexus 6 (which has an Adreno 4xx).
      */
-    if (kQualcomm_GrGLVendor == args.fVendor) {
+    if (kAdreno3xx_GrGLRenderer == args.fRenderer) {
         args.fGLSLGeneration = k110_GrGLSLGeneration;
     }
 
-    args.fRenderer = GrGLGetRendererFromString(renderer);
-
     GrGLGetDriverInfo(interface->fStandard, args.fVendor, renderer, ver,
                       &args.fDriver, &args.fDriverVersion);
 
     args.fContextOptions = &options;
 
     return SkNEW_ARGS(GrGLContext, (args));
 }
 
 GrGLContextInfo::GrGLContextInfo(const ConstructorArgs& args) {
     fInterface.reset(SkRef(args.fInterface));
     fGLVersion = args.fGLVersion;
     fGLSLGeneration = args.fGLSLGeneration;
     fVendor = args.fVendor;
     fRenderer = args.fRenderer;
     fDriver = args.fDriver;
     fDriverVersion = args.fDriverVersion;
 
     fGLCaps.reset(SkNEW_ARGS(GrGLCaps, (*args.fContextOptions, *this, fInterface)));
 }