Bug Fix for Intel atan on gpu sweep gradient

src/gpu/gl/GrGLUtil.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrGLUtil.h"
 #include "SkMatrix.h"
 #include <stdio.h>
+#include <string>
 
 void GrGLClearErr(const GrGLInterface* gl) {
     while (GR_GL_NO_ERROR != gl->fFunctions.fGetError()) {}
 }
 
 namespace {
 const char *get_error_string(uint32_t err) {
     switch (err) {
     case GR_GL_NO_ERROR:
         return "";
@@ skipping 184 matching lines @@
 }
 
 GrGLVendor GrGLGetVendorFromString(const char* vendorString) {
     if (NULL != vendorString) {
         if (0 == strcmp(vendorString, "ARM")) {
             return kARM_GrGLVendor;
         }
         if (0 == strcmp(vendorString, "Imagination Technologies")) {
             return kImagination_GrGLVendor;
         }
-        if (0 == strcmp(vendorString, "Intel")) {
+        std::string vendorStringTmp(vendorString);
+        if (0 == vendorStringTmp.compare(0, 6, "Intel ") || 0 == strcmp(vendorString, "Intel")) {

[bsalomon, 2014/02/12 22:14:38]

strncmp? Not totally opposed to std::string but since we're already using the
C-style str functions here it seems more consistent.

             return kIntel_GrGLVendor;
         }
         if (0 == strcmp(vendorString, "Qualcomm")) {
             return kQualcomm_GrGLVendor;
         }
     }
     return kOther_GrGLVendor;
 }
 
 GrGLRenderer GrGLGetRendererFromString(const char* rendererString) {
@@ skipping 66 matching lines @@
     dest[9]  = 0;
     dest[10] = 1;
     dest[11] = 0;
 
     // Col 3
     dest[12] = SkScalarToFloat(src[SkMatrix::kMTransX]);
     dest[13] = SkScalarToFloat(src[SkMatrix::kMTransY]);
     dest[14] = 0;
     dest[15] = SkScalarToFloat(src[SkMatrix::kMPersp2]);
 }