prog_statevars.h revision 73578ba9c4938db3a23198c3a2ddf843cfc4f700 
1/*
2 * Mesa 3-D graphics library
3 * Version:  7.1
4 *
5 * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25#ifndef PROG_STATEVARS_H
26#define PROG_STATEVARS_H
27
28#include "main/mtypes.h"
29
30
31/**
32 * Number of STATE_* values we need to address any GL state.
33 * Used to dimension arrays.
34 */
35#define STATE_LENGTH 5
36
37
38/**
39 * Used for describing GL state referenced from inside ARB vertex and
40 * fragment programs.
41 * A string such as "state.light[0].ambient" gets translated into a
42 * sequence of tokens such as [ STATE_LIGHT, 0, STATE_AMBIENT ].
43 *
44 * For state that's an array, like STATE_CLIPPLANE, the 2nd token [1] should
45 * always be the array index.
46 */
47typedef enum gl_state_index_ {
48   STATE_MATERIAL = 100,  /* start at 100 so small ints are seen as ints */
49
50   STATE_LIGHT,
51   STATE_LIGHTMODEL_AMBIENT,
52   STATE_LIGHTMODEL_SCENECOLOR,
53   STATE_LIGHTPROD,
54
55   STATE_TEXGEN,
56
57   STATE_FOG_COLOR,
58   STATE_FOG_PARAMS,
59
60   STATE_CLIPPLANE,
61
62   STATE_POINT_SIZE,
63   STATE_POINT_ATTENUATION,
64
65   STATE_MODELVIEW_MATRIX,
66   STATE_PROJECTION_MATRIX,
67   STATE_MVP_MATRIX,
68   STATE_TEXTURE_MATRIX,
69   STATE_PROGRAM_MATRIX,
70   STATE_MATRIX_INVERSE,
71   STATE_MATRIX_TRANSPOSE,
72   STATE_MATRIX_INVTRANS,
73
74   STATE_AMBIENT,
75   STATE_DIFFUSE,
76   STATE_SPECULAR,
77   STATE_EMISSION,
78   STATE_SHININESS,
79   STATE_HALF_VECTOR,
80
81   STATE_POSITION,       /**< xyzw = position */
82   STATE_ATTENUATION,    /**< xyz = attenuation, w = spot exponent */
83   STATE_SPOT_DIRECTION, /**< xyz = direction, w = cos(cutoff) */
84   STATE_SPOT_CUTOFF,    /**< x = cutoff, yzw = undefined */
85
86   STATE_TEXGEN_EYE_S,
87   STATE_TEXGEN_EYE_T,
88   STATE_TEXGEN_EYE_R,
89   STATE_TEXGEN_EYE_Q,
90   STATE_TEXGEN_OBJECT_S,
91   STATE_TEXGEN_OBJECT_T,
92   STATE_TEXGEN_OBJECT_R,
93   STATE_TEXGEN_OBJECT_Q,
94
95   STATE_TEXENV_COLOR,
96
97   STATE_DEPTH_RANGE,
98
99   STATE_VERTEX_PROGRAM,
100   STATE_FRAGMENT_PROGRAM,
101
102   STATE_ENV,
103   STATE_LOCAL,
104
105   STATE_INTERNAL,		/* Mesa additions */
106   STATE_CURRENT_ATTRIB,        /* ctx->Current vertex attrib value */
107   STATE_NORMAL_SCALE,
108   STATE_TEXRECT_SCALE,
109   STATE_FOG_PARAMS_OPTIMIZED,  /* for faster fog calc */
110   STATE_POINT_SIZE_CLAMPED,    /* includes implementation dependent size clamp */
111   STATE_POINT_SIZE_IMPL_CLAMP, /* for implementation clamp only in vs */
112   STATE_LIGHT_SPOT_DIR_NORMALIZED,   /* pre-normalized spot dir */
113   STATE_LIGHT_POSITION,              /* object vs eye space */
114   STATE_LIGHT_POSITION_NORMALIZED,   /* object vs eye space */
115   STATE_LIGHT_HALF_VECTOR,           /* object vs eye space */
116   STATE_PT_SCALE,              /**< Pixel transfer RGBA scale */
117   STATE_PT_BIAS,               /**< Pixel transfer RGBA bias */
118   STATE_SHADOW_AMBIENT,        /**< ARB_shadow_ambient fail value; token[2] is texture unit index */
119   STATE_FB_SIZE,               /**< (width-1, height-1, 0, 0) */
120   STATE_ROT_MATRIX_0,          /**< ATI_envmap_bumpmap, rot matrix row 0 */
121   STATE_ROT_MATRIX_1,          /**< ATI_envmap_bumpmap, rot matrix row 1 */
122   STATE_INTERNAL_DRIVER	/* first available state index for drivers (must be last) */
123} gl_state_index;
124
125
126
127extern void
128_mesa_load_state_parameters(GLcontext *ctx,
129                            struct gl_program_parameter_list *paramList);
130
131
132extern GLbitfield
133_mesa_program_state_flags(const gl_state_index state[STATE_LENGTH]);
134
135
136extern char *
137_mesa_program_state_string(const gl_state_index state[STATE_LENGTH]);
138
139
140extern void
141_mesa_load_tracked_matrices(GLcontext *ctx);
142
143
144#endif /* PROG_STATEVARS_H */
145