Fixes for GLES systems.

client/deps/glbench/src/main.h

 // Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BENCH_GL_MAIN_H_
 #define BENCH_GL_MAIN_H_
 
 #include <gflags/gflags.h>
 #include <sys/time.h>
 
-#ifdef USE_EGL
+#if defined(USE_OPENGLES)
 #include <GLES2/gl2.h>
 #include <EGL/egl.h>
-#else
+#elif defined(USE_OPENGL)
 #include <GL/gl.h>
 #include <GL/glx.h>
 
 #define LIST_PROC_FUNCTIONS(F) \
     F(glAttachShader, PFNGLATTACHSHADERPROC) \
     F(glBindBuffer, PFNGLBINDBUFFERPROC) \
     F(glBufferData, PFNGLBUFFERDATAPROC) \
     F(glCompileShader, PFNGLCOMPILESHADERPROC) \
     F(glCreateProgram, PFNGLCREATEPROGRAMPROC) \
     F(glCreateShader, PFNGLCREATESHADERPROC) \
@@ skipping 15 matching lines @@
     F(glUseProgram, PFNGLUSEPROGRAMPROC) \
     F(glVertexAttribPointer, PFNGLVERTEXATTRIBPOINTERPROC) \
     F(glXSwapIntervalSGI, PFNGLXSWAPINTERVALSGIPROC) \
     F(glXBindTexImageEXT, PFNGLXBINDTEXIMAGEEXTPROC) \
     F(glXReleaseTexImageEXT, PFNGLXRELEASETEXIMAGEEXTPROC)
 
 #define F(fun, type) extern type fun;
 LIST_PROC_FUNCTIONS(F)
 #undef F
 
+#else
+#error bad graphics backend
 #endif
 
 inline uint64_t GetUTime() {
   struct timeval tv;
   gettimeofday(&tv, NULL);
   return static_cast<uint64_t>(tv.tv_usec) +
     1000000ULL*static_cast<uint64_t>(tv.tv_sec);
 }
 
 extern GLint g_width;
 extern GLint g_height;
 DECLARE_bool(override_redirect);
 
 bool Init();
 bool InitContext();
 void DestroyContext();
 void SwapBuffers();
 bool SwapInterval(int interval);
 
 // This size is for a window that is very large but will fit on all
 // the displays we care about.
 #define WINDOW_WIDTH 512
 #define WINDOW_HEIGHT 512
 
 #endif  // BENCH_GL_MAIN_H_