| 1 | /* $Id: clip.h,v 1.2 2000-05-21 20:14:08 jeroen Exp $ */
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| 2 |
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| 3 | /*
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| 4 | * Mesa 3-D graphics library
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| 5 | * Version: 3.1
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| 6 | *
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| 7 | * Copyright (C) 1999 Brian Paul All Rights Reserved.
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| 8 | *
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| 9 | * Permission is hereby granted, free of charge, to any person obtaining a
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| 10 | * copy of this software and associated documentation files (the "Software"),
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| 11 | * to deal in the Software without restriction, including without limitation
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| 12 | * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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| 13 | * and/or sell copies of the Software, and to permit persons to whom the
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| 14 | * Software is furnished to do so, subject to the following conditions:
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| 15 | *
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| 16 | * The above copyright notice and this permission notice shall be included
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| 17 | * in all copies or substantial portions of the Software.
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| 18 | *
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| 19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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| 20 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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| 21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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| 22 | * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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| 23 | * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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| 24 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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| 25 | */
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| 26 |
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| 27 |
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| 28 |
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| 29 |
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| 30 |
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| 31 | #ifndef CLIP_H
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| 32 | #define CLIP_H
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| 33 |
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| 34 |
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| 35 | #include "types.h"
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| 36 |
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| 37 |
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| 38 |
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| 39 | #ifdef DEBUG
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| 40 | # define GL_VIEWCLIP_POINT( V ) gl_viewclip_point( V )
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| 41 | #else
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| 42 | # define GL_VIEWCLIP_POINT( V ) \
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| 43 | ( (V)[0] <= (V)[3] && (V)[0] >= -(V)[3] \
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| 44 | && (V)[1] <= (V)[3] && (V)[1] >= -(V)[3] \
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| 45 | && (V)[2] <= (V)[3] && (V)[2] >= -(V)[3] )
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| 46 | #endif
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| 47 |
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| 48 |
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| 49 |
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| 50 |
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| 51 | #define CLIP_TAB_EDGEFLAG 1
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| 52 |
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| 53 | extern void gl_init_clip(void);
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| 54 |
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| 55 |
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| 56 | extern GLuint gl_viewclip_point( const GLfloat v[] );
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| 57 |
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| 58 |
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| 59 |
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| 60 | extern GLuint gl_userclip_point( GLcontext* ctx, const GLfloat v[] );
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| 61 |
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| 62 |
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| 63 | extern void gl_user_cliptest( struct vertex_buffer *VB );
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| 64 |
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| 65 |
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| 66 | extern void _mesa_ClipPlane( GLenum plane, const GLdouble *equation );
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| 67 |
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| 68 | extern void _mesa_GetClipPlane( GLenum plane, GLdouble *equation );
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| 69 |
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| 70 |
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| 71 | /*
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| 72 | * Clipping interpolation functions
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| 73 | */
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| 74 |
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| 75 | extern void gl_clip_interp_all( struct vertex_buffer *VB,
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| 76 | GLuint dst, GLfloat t, GLuint in, GLuint out );
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| 77 |
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| 78 | extern void gl_clip_interp_color_tex( struct vertex_buffer *VB,
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| 79 | GLuint dst, GLfloat t, GLuint in, GLuint out );
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| 80 |
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| 81 | extern void gl_clip_interp_tex( struct vertex_buffer *VB,
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| 82 | GLuint dst, GLfloat t, GLuint in, GLuint out );
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| 83 |
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| 84 | extern void gl_clip_interp_color( struct vertex_buffer *VB,
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| 85 | GLuint dst, GLfloat t, GLuint in, GLuint out );
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| 86 |
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| 87 | extern void gl_clip_interp_none( struct vertex_buffer *VB,
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| 88 | GLuint dst, GLfloat t, GLuint in, GLuint out );
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| 89 |
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| 90 |
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| 91 | extern void gl_update_userclip( GLcontext *ctx );
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| 92 |
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| 93 | extern void gl_update_clipmask( GLcontext *ctx );
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| 94 |
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| 95 | #endif
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