Attempt to unbreak OpenGL ES build

panda/src/glstuff/glGraphicsBuffer_src.cxx

@@ -350,6 +350,7 @@ rebuild_bitplanes() {
       bind_slot(face, rb_resize, attach, (RenderTexturePlane)(RTP_aux_float_0+i), next);
       next += 1;
     }
+#endif  // OPENGLES
 
     // Clear if the fbo was just created, regardless of the clear settings per frame.
     if (_initial_clear) {
@@ -366,6 +367,7 @@ rebuild_bitplanes() {
     glgsg->bind_fbo(_fbo_multisample);
     bind_slot_multisample(rb_resize, attach, RTP_depth, GL_DEPTH_ATTACHMENT_EXT);
     bind_slot_multisample(rb_resize, attach, RTP_color, GL_COLOR_ATTACHMENT0_EXT);
+#ifndef OPENGLES
     int next = GL_COLOR_ATTACHMENT1_EXT;
     for (int i=0; i<_fb_properties.get_aux_rgba(); i++) {
       bind_slot_multisample(rb_resize, attach, (RenderTexturePlane)(RTP_aux_rgba_0+i), next);
@@ -379,6 +381,7 @@ rebuild_bitplanes() {
       bind_slot_multisample(rb_resize, attach, (RenderTexturePlane)(RTP_aux_float_0+i), next);
       next += 1;
     }
+#endif  // OPENGLES
     glEnable(GL_MULTISAMPLE);
 
     if (_initial_clear) {
@@ -388,7 +391,6 @@ rebuild_bitplanes() {
   } else {
     glDisable(GL_MULTISAMPLE);
   }
-#endif  // OPENGLES
 
   _initial_clear = false;