tnl: add some comments in render_line_loop code
[mesa.git] / src / mesa / tnl / tnl.h
1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors:
25 * Keith Whitwell <keithw@vmware.com>
26 */
27
28 #ifndef _TNL_H
29 #define _TNL_H
30
31 #include "main/glheader.h"
32
33 struct gl_client_array;
34 struct gl_context;
35 struct gl_program;
36
37
38 /* These are the public-access functions exported from tnl. (A few
39 * more are currently hooked into dispatch directly by the module
40 * itself.)
41 */
42 extern GLboolean
43 _tnl_CreateContext( struct gl_context *ctx );
44
45 extern void
46 _tnl_DestroyContext( struct gl_context *ctx );
47
48 extern void
49 _tnl_InvalidateState( struct gl_context *ctx, GLuint new_state );
50
51 /* Functions to revive the tnl module after being unhooked from
52 * dispatch and/or driver callbacks.
53 */
54
55 extern void
56 _tnl_wakeup( struct gl_context *ctx );
57
58 /* Driver configuration options:
59 */
60 extern void
61 _tnl_need_projected_coords( struct gl_context *ctx, GLboolean flag );
62
63
64 /* Control whether T&L does per-vertex fog
65 */
66 extern void
67 _tnl_allow_vertex_fog( struct gl_context *ctx, GLboolean value );
68
69 extern void
70 _tnl_allow_pixel_fog( struct gl_context *ctx, GLboolean value );
71
72 extern GLboolean
73 _tnl_program_string(struct gl_context *ctx, GLenum target, struct gl_program *program);
74
75 struct _mesa_prim;
76 struct _mesa_index_buffer;
77
78 void
79 _tnl_draw_prims(struct gl_context *ctx,
80 const struct _mesa_prim *prim,
81 GLuint nr_prims,
82 const struct _mesa_index_buffer *ib,
83 GLboolean index_bounds_valid,
84 GLuint min_index,
85 GLuint max_index,
86 struct gl_transform_feedback_object *tfb_vertcount,
87 unsigned stream,
88 struct gl_buffer_object *indirect );
89
90 extern void
91 _tnl_RasterPos(struct gl_context *ctx, const GLfloat vObj[4]);
92
93 extern void
94 _tnl_validate_shine_tables( struct gl_context *ctx );
95
96 #endif