This patch file is a first try to add pbuffer render to texture capability under Linux/X11. It is ATI specific and not
 complete yet, due to lack of information about the ATI GLX_ATI_render_texture extension. The glXBindTexImageATI seems to
 be a dummy call. I have asked technical information to ATI but am still waiting for an answer. However, the current
 version implements the bindTexture and releaseTexture calls, by doing a pixel copy in swapBuffers(). It is better than
 nothing. If somebody has an idea, I will be happy.
 
 I will continue to improve the pbuffer support.
 
 The modified files are :
 X11PbufferGLContext.java
 glxext.h : I have included the content of the glxATI.h file delivered with the ATI RADEON driver in it
 
 The patch (patch_pbuffer_X11 file) works with the ATI fglrx driver version 3.2.8 for RADEON boards, available on the ATI website.
 
 I have included a little test app.
 
 Le Clech Philippe
 
 email : pleclech@freesurf.fr 
