t_vertex.h revision 74b00800862e917673a0bf06eace2c5266b531ac 
1/*
2 * Copyright 2003 Tungsten Graphics, inc.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * on the rights to use, copy, modify, merge, publish, distribute, sub
9 * license, and/or sell copies of the Software, and to permit persons to whom
10 * the Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
19 * TUNGSTEN GRAPHICS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
22 * USE OR OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors:
25 *    Keith Whitwell <keithw@tungstengraphics.com>
26 */
27
28#ifndef _TNL_VERTEX_H
29#define _TNL_VERTEX_H
30
31#include "mtypes.h"
32#include "t_context.h"
33
34/* New mechanism to specify hardware vertices so that tnl can build
35 * and manipulate them directly.
36 */
37
38
39/* It will probably be necessary to allow drivers to specify new
40 * emit-styles to cover all the wierd and wacky things out there.
41 */
42enum tnl_attr_format {
43   EMIT_1F,
44   EMIT_2F,
45   EMIT_3F,
46   EMIT_4F,
47   EMIT_2F_VIEWPORT,		/* do viewport transform and emit */
48   EMIT_3F_VIEWPORT,		/* do viewport transform and emit */
49   EMIT_4F_VIEWPORT,		/* do viewport transform and emit */
50   EMIT_3F_XYW,			/* for projective texture */
51   EMIT_1UB_1F,			/* for fog coordinate */
52   EMIT_3UB_3F_RGB,		/* for specular color */
53   EMIT_3UB_3F_BGR,		/* for specular color */
54   EMIT_4UB_4F_RGBA,		/* for color */
55   EMIT_4UB_4F_BGRA,		/* for color */
56   EMIT_4UB_4F_ARGB,		/* for color */
57   EMIT_4UB_4F_ABGR,		/* for color */
58   EMIT_4CHAN_4F_RGBA,		/* for swrast color */
59   EMIT_PAD,			/* leave a hole of 'offset' bytes */
60   EMIT_MAX
61};
62
63struct tnl_attr_map {
64   GLuint attrib;			/* _TNL_ATTRIB_ enum */
65   enum tnl_attr_format format;
66   GLuint offset;
67};
68
69
70
71/* Interpolate between two vertices to produce a third:
72 */
73extern void _tnl_interp( GLcontext *ctx,
74			 GLfloat t,
75			 GLuint edst, GLuint eout, GLuint ein,
76			 GLboolean force_boundary );
77
78/* Copy colors from one vertex to another:
79 */
80extern void _tnl_copy_pv(  GLcontext *ctx, GLuint edst, GLuint esrc );
81
82
83/* Extract a named attribute from a hardware vertex.  Will have to
84 * reverse any viewport transformation, swizzling or other conversions
85 * which may have been applied:
86 */
87extern void _tnl_get_attr( GLcontext *ctx, const void *vertex, GLenum attrib,
88			   GLfloat *dest );
89
90/* Complementary to the above.
91 */
92extern void _tnl_set_attr( GLcontext *ctx, void *vout, GLenum attrib,
93			   const GLfloat *src );
94
95
96extern void *_tnl_get_vertex( GLcontext *ctx, GLuint nr );
97
98
99/*
100 */
101extern GLuint _tnl_install_attrs( GLcontext *ctx,
102				  const struct tnl_attr_map *map,
103				  GLuint nr, const GLfloat *vp,
104				  GLuint unpacked_size );
105
106
107
108
109
110extern void _tnl_free_vertices( GLcontext *ctx );
111
112extern void _tnl_init_vertices( GLcontext *ctx,
113				GLuint vb_size,
114				GLuint max_vertex_size );
115
116extern void *_tnl_emit_vertices_to_buffer( GLcontext *ctx,
117					   GLuint start,
118					   GLuint end,
119					   void *dest );
120
121extern void _tnl_build_vertices( GLcontext *ctx,
122				 GLuint start,
123				 GLuint end,
124				 GLuint newinputs );
125
126extern void _tnl_invalidate_vertices( GLcontext *ctx, GLuint newinputs );
127
128extern void _tnl_invalidate_vertex_state( GLcontext *ctx, GLuint new_state );
129
130extern tnl_emit_func _tnl_codegen_emit( GLcontext *ctx );
131
132#define REG_IN   (0<<16)
133#define REG_OUT  (1<<16)
134#define REG_VP   (2<<16)
135#define REG_TMP  (3<<16)
136#define REG_MASK (3<<16)
137
138#define REG_OFFSET_MASK  0xffff
139
140#define in( offset )  (REG_IN  | (offset))
141#define out( offset ) (REG_OUT | (offset))
142#define vp( offset )  (REG_VP  | (offset))
143#define tmp( offset ) (REG_TMP | (offset))
144
145
146extern void _tnl_init_c_codegen( struct tnl_clipspace_codegen *p );
147
148#define GET_VERTEX_STATE(ctx)  &(TNL_CONTEXT(ctx)->clipspace)
149
150#endif
151