texture-rectangle

panda/src/osxdisplay/osxGraphicsBuffer.cxx

@@ -161,7 +161,15 @@ open_buffer() {
   }
 
   if (_pbuffer == NULL) {
-    if (!aglCreatePBuffer(_x_size, _y_size, GL_TEXTURE_2D, GL_RGBA, 0, &_pbuffer)) {
+    GLenum target = GL_TEXTURE_RECTANGLE_ARB;
+    if (_x_size == Texture::up_to_power_2(_x_size) && 
+        _y_size == Texture::up_to_power_2(_x_size)) {
+      // It's a power-of-two size, so we can use GL_TEXTURE_2D as the
+      // target.  Dunno, but maybe this will be more likely to work on
+      // some hardware.
+      target = GL_TEXTURE_2D;
+    }
+    if (!aglCreatePBuffer(_x_size, _y_size, target, GL_RGBA, 0, &_pbuffer)) {
       aglReportError("aglCreatePBuffer");
       close_buffer();
       return false;