1 Reply Latest reply on Jul 9, 2009 12:34 PM by Byron

    OpenGL, GLSL, Clipping planes - once again



      I'v made a simple test program demonstrating that custom cliping planes do not work on ATI (I'v tested on 1900XT and 4800HD, catalysts 9.5 and 9.6)
      The link to the program is here: http://mxadd.org/bin/ATIClip.zip
      In vertex shader I'm outputing gl_ClipVertex, in code I'm enabling clip plane and setting equation - and all works perfectly on any nvida card ... but not on ATI smirk
      I'm doing something totaly wrong - or ATI just does not support cliping planes in OpenGL ?
      (Under DX9 / 10 they work perfecly without performance drop - so hardware is capable)

      Is the ATI OpenGL implementation so buggy ?
      I'v send a bug raport few weeks ago thru 'servicedesk@amddevcentral.com' but no one bothered to ansfer,
      Is there any other mail where i should raport driver bugs or they just don't care ?