[occt.git] / src / OpenGl / OpenGl_togl_inquireplane.cxx

#define GER61454  /*GG 14-09-99 Activates the model clipping planes
// GG 110800  UNDER LINUX and MESA 3.2, nothing can be done until
//    gl context is open first.
*/
#ifdef DEBUG
#include <stdio.h>
#endif

#include <OpenGl_tgl_all.hxx>

int EXPORT
call_togl_inquireplane ()
{
  GLint maxplanes = 0;
  if( GET_GL_CONTEXT() ) {
#ifdef GER61454
    glGetIntegerv( GL_MAX_CLIP_PLANES, &maxplanes);
    maxplanes -= 2;   /* NOTE the 2 first planes are reserved for ZClipping */
    if( maxplanes < 0 ) 
      maxplanes = 0;
#endif
  }
#ifdef DEBUG
  printf(" @@@ call_togl_inquireplane. GL_MAX_CLIP_PLANES is %d\n",maxplanes);
#endif
  return maxplanes;
}
Commit	Line	Data
7fd59977	1	#define GER61454 /*GG 14-09-99 Activates the model clipping planes
	2	// GG 110800 UNDER LINUX and MESA 3.2, nothing can be done until
	3	// gl context is open first.
	4	*/
	5	#ifdef DEBUG
	6	#include <stdio.h>
	7	#endif
	8
	9	#include <OpenGl_tgl_all.hxx>
7fd59977	10
	11	int EXPORT
	12	call_togl_inquireplane ()
	13	{
	14	GLint maxplanes = 0;
	15	if( GET_GL_CONTEXT() ) {
	16	#ifdef GER61454
	17	glGetIntegerv( GL_MAX_CLIP_PLANES, &maxplanes);
	18	maxplanes -= 2; /* NOTE the 2 first planes are reserved for ZClipping */
	19	if( maxplanes < 0 )
	20	maxplanes = 0;
7fd59977	21	#endif
	22	}
	23	#ifdef DEBUG
	24	printf(" @@@ call_togl_inquireplane. GL_MAX_CLIP_PLANES is %d\n",maxplanes);
	25	#endif
	26	return maxplanes;
	27	}