Corrected bug on OpenGL 1.1

Set makefile to default OpenGL 3.3 compilation

src/Makefile

@@ -49,10 +49,10 @@ ifeq ($(PLATFORM),PLATFORM_RPI)
     # define raylib graphics api to use (on RPI, OpenGL ES 2.0 must be used)
     GRAPHICS = GRAPHICS_API_OPENGL_ES2
 else
-    # define raylib graphics api to use (OpenGL 1.1 by default)
-    GRAPHICS ?= GRAPHICS_API_OPENGL_11
+    # define raylib graphics api to use (OpenGL 3.3 by default)
+    GRAPHICS ?= GRAPHICS_API_OPENGL_33
+    #GRAPHICS = GRAPHICS_API_OPENGL_11  # Uncomment to use OpenGL 1.1
     #GRAPHICS = GRAPHICS_API_OPENGL_21  # Uncomment to use OpenGL 2.1
-    #GRAPHICS = GRAPHICS_API_OPENGL_33  # Uncomment to use OpenGL 3.3
 endif
 ifeq ($(PLATFORM),PLATFORM_WEB)
     GRAPHICS = GRAPHICS_API_OPENGL_ES2

src/rlgl.c

@@ -2645,6 +2645,10 @@ void InitVrDevice(int hmdDevice)
         vrEnabled = true;
     }
 #endif
+
+#if defined(GRAPHICS_API_OPENGL_11)
+    TraceLog(WARNING, "VR device or simulator not supported on OpenGL 1.1");
+#endif
 }
 
 // Close VR device (or simulator)
@@ -2672,6 +2676,7 @@ bool IsVrDeviceReady(void)
 // Enable/Disable VR experience (device or simulator)
 void ToggleVrMode(void)
 {
+#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
     if (vrDeviceReady || vrSimulator) vrEnabled = !vrEnabled;
     else vrEnabled = false;
     
@@ -2683,6 +2688,7 @@ void ToggleVrMode(void)
         MatrixTranspose(&projection);
         modelview = MatrixIdentity();
     }
+#endif
 }
 
 // Update VR tracking (position and orientation)