1 /* $Id: clip.h,v 1.3 1999/11/11 01:22:25 brianp Exp $ */
4 * Mesa 3-D graphics library
7 * Copyright (C) 1999 Brian Paul All Rights Reserved.
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
16 * The above copyright notice and this permission notice shall be included
17 * in all copies or substantial portions of the Software.
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
23 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
24 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
40 # define GL_VIEWCLIP_POINT( V ) gl_viewclip_point( V )
42 # define GL_VIEWCLIP_POINT( V ) \
43 ( (V)[0] <= (V)[3] && (V)[0] >= -(V)[3] \
44 && (V)[1] <= (V)[3] && (V)[1] >= -(V)[3] \
45 && (V)[2] <= (V)[3] && (V)[2] >= -(V)[3] )
51 #define CLIP_TAB_EDGEFLAG 1
53 extern void gl_init_clip(void);
56 extern GLuint
gl_viewclip_point( const GLfloat v
[] );
60 extern GLuint
gl_userclip_point( GLcontext
* ctx
, const GLfloat v
[] );
63 extern void gl_user_cliptest( struct vertex_buffer
*VB
);
66 extern void _mesa_ClipPlane( GLenum plane
, const GLdouble
*equation
);
68 extern void _mesa_GetClipPlane( GLenum plane
, GLdouble
*equation
);
72 * Clipping interpolation functions
75 extern void gl_clip_interp_all( struct vertex_buffer
*VB
,
76 GLuint dst
, GLfloat t
, GLuint in
, GLuint out
);
78 extern void gl_clip_interp_color_tex( struct vertex_buffer
*VB
,
79 GLuint dst
, GLfloat t
, GLuint in
, GLuint out
);
81 extern void gl_clip_interp_tex( struct vertex_buffer
*VB
,
82 GLuint dst
, GLfloat t
, GLuint in
, GLuint out
);
84 extern void gl_clip_interp_color( struct vertex_buffer
*VB
,
85 GLuint dst
, GLfloat t
, GLuint in
, GLuint out
);
87 extern void gl_clip_interp_none( struct vertex_buffer
*VB
,
88 GLuint dst
, GLfloat t
, GLuint in
, GLuint out
);
91 extern void gl_update_userclip( GLcontext
*ctx
);
93 extern void gl_update_clipmask( GLcontext
*ctx
);