home *** CD-ROM | disk | FTP | other *** search
- /* $Id: clip.h,v 1.2 1999/09/18 20:41:22 keithw Exp $ */
-
- /*
- * Mesa 3-D graphics library
- * Version: 3.1
- *
- * Copyright (C) 1999 Brian Paul 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, sublicense,
- * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL 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 CLIP_H
- #define CLIP_H
-
-
- #include "types.h"
-
-
-
- #ifdef DEBUG
- # define GL_VIEWCLIP_POINT( V ) gl_viewclip_point( V )
- #else
- # define GL_VIEWCLIP_POINT( V ) \
- ( (V)[0] <= (V)[3] && (V)[0] >= -(V)[3] \
- && (V)[1] <= (V)[3] && (V)[1] >= -(V)[3] \
- && (V)[2] <= (V)[3] && (V)[2] >= -(V)[3] )
- #endif
-
-
-
-
- #define CLIP_TAB_EDGEFLAG 1
-
- extern void gl_init_clip(void);
-
-
- extern GLuint gl_viewclip_point( const GLfloat v[] );
-
-
-
- extern GLuint gl_userclip_point( GLcontext* ctx, const GLfloat v[] );
-
-
- extern void gl_user_cliptest( struct vertex_buffer *VB );
-
-
- extern void gl_ClipPlane( GLcontext* ctx,
- GLenum plane, const GLfloat *equation );
-
- extern void gl_GetClipPlane( GLcontext* ctx,
- GLenum plane, GLdouble *equation );
-
-
- /*
- * Clipping interpolation functions
- */
-
- extern void gl_clip_interp_all( struct vertex_buffer *VB,
- GLuint dst, GLfloat t, GLuint in, GLuint out );
-
- extern void gl_clip_interp_color_tex( struct vertex_buffer *VB,
- GLuint dst, GLfloat t, GLuint in, GLuint out );
-
- extern void gl_clip_interp_tex( struct vertex_buffer *VB,
- GLuint dst, GLfloat t, GLuint in, GLuint out );
-
- extern void gl_clip_interp_color( struct vertex_buffer *VB,
- GLuint dst, GLfloat t, GLuint in, GLuint out );
-
- extern void gl_clip_interp_none( struct vertex_buffer *VB,
- GLuint dst, GLfloat t, GLuint in, GLuint out );
-
-
- extern void gl_update_userclip( GLcontext *ctx );
-
- extern void gl_update_clipmask( GLcontext *ctx );
-
- #endif
-