Added iOS/OSX ifdefs.

src/config.h

@@ -12,11 +12,11 @@
 #	endif // BGFX_CONFIG_RENDERER_DIRECT3D
 
 #	ifndef BGFX_CONFIG_RENDERER_OPENGL
-#		define BGFX_CONFIG_RENDERER_OPENGL (BX_PLATFORM_LINUX)
+#		define BGFX_CONFIG_RENDERER_OPENGL (BX_PLATFORM_LINUX|BX_PLATFORM_OSX)
 #	endif // BGFX_CONFIG_RENDERER_OPENGL
 
 #	ifndef BGFX_CONFIG_RENDERER_OPENGLES
-#		define BGFX_CONFIG_RENDERER_OPENGLES (BX_PLATFORM_NACL|BX_PLATFORM_ANDROID)
+#		define BGFX_CONFIG_RENDERER_OPENGLES (BX_PLATFORM_NACL|BX_PLATFORM_ANDROID|BX_PLATFORM_IOS)
 #	endif // BGFX_CONFIG_RENDERER_OPENGLES
 
 #	ifndef BGFX_CONFIG_RENDERER_NULL