/**************************************************************************
 *
 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 **************************************************************************/
#ifndef LP_SETUP_H
#define LP_SETUP_H


enum lp_interp {
   LP_INTERP_CONSTANT,
   LP_INTERP_LINEAR,
   LP_INTERP_PERSPECTIVE,
   LP_INTERP_POSITION,
   LP_INTERP_FACING
};

struct setup_context;

struct setup_context *
lp_setup_create( void );

void
lp_setup_triangle(struct setup_context *setup,
                  const float (*v0)[4],
                  const float (*v1)[4],
                  const float (*v1)[4]);

void
lp_setup_line(struct setup_context *setup,
              const float (*v0)[4],
              const float (*v1)[4]);

void
lp_setup_point( struct setup_context *setup,
                const float (*v0)[4] );

void 
lp_setup_set_triangle_state( struct setup_context *setup,
                             unsigned cullmode,
                             boolean front_is_ccw );

void
lp_setup_set_fs_inputs( struct setup_context *setup,
                        const enum lp_interp *interp,
                        unsigned nr );

void 
lp_setup_destroy( struct setup_context *setup );

#endif