Name

cgGetProgramInput - get the program's input

Synopsis

#include <Cg/cg.h>

CGenum cgGetProgramInput( CGprogram program );

Parameters

program

A program handle.

Return Values

Returns a program input enumerant. If the program is a vertex or fragment program, it returns CG_VERTEX or CG_FRAGMENT, respectively. For geometry programs the input is one of: CG_POINT, CG_LINE, CG_LINE_ADJ, CG_TRIANGLE, or CG_TRIANGLE_ADJ. For tessellation control and evaluation programs the input is CG_PATCH.

Returns CG_UNKNOWN if the input is unknown.

Description

cgGetProgramInput returns the program input enumerant.

Examples

void printProgramInput(CGprogram program)
{
  char * input = NULL;
  switch(cgGetProgramInput(program))
  {
    case CG_FRAGMENT:
        input = "fragment";
        break;
    case CG_VERTEX:
        input = "vertex";
        break;
    case CG_POINT:
        input = "point";
        break;
    case CG_LINE:
        input = "line";
        break;
    case CG_LINE_ADJ:
        input = "line adjacency";
        break;
    case CG_TRIANGLE:
        input = "triangle";
        break;
    case CG_TRIANGLE_ADJ:
        input = "triangle adjacency";
        break;
    case CG_PATCH:
        input = "patch";
        break;
    default:
        input = "unknown";
        break;
  }
  printf("Program inputs %s.\n", input);
}

Errors

CG_INVALID_PROGRAM_HANDLE_ERROR is generated if program is not valid program handle.

History

cgGetProgramInput was introduced in Cg 2.0.

See Also

cgGetProgramOutput