2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
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7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
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11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
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17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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25 #ifndef PROG_STATEVARS_H
26 #define PROG_STATEVARS_H
29 #include "main/glheader.h"
38 struct gl_program_parameter_list
;
41 * Number of STATE_* values we need to address any GL state.
42 * Used to dimension arrays.
44 #define STATE_LENGTH 5
48 * Used for describing GL state referenced from inside ARB vertex and
50 * A string such as "state.light[0].ambient" gets translated into a
51 * sequence of tokens such as [ STATE_LIGHT, 0, STATE_AMBIENT ].
53 * For state that's an array, like STATE_CLIPPLANE, the 2nd token [1] should
54 * always be the array index.
56 typedef enum gl_state_index_
{
57 STATE_MATERIAL
= 100, /* start at 100 so small ints are seen as ints */
60 STATE_LIGHTMODEL_AMBIENT
,
61 STATE_LIGHTMODEL_SCENECOLOR
,
72 STATE_POINT_ATTENUATION
,
74 STATE_MODELVIEW_MATRIX
,
75 STATE_PROJECTION_MATRIX
,
80 STATE_MATRIX_TRANSPOSE
,
81 STATE_MATRIX_INVTRANS
,
90 STATE_POSITION
, /**< xyzw = position */
91 STATE_ATTENUATION
, /**< xyz = attenuation, w = spot exponent */
92 STATE_SPOT_DIRECTION
, /**< xyz = direction, w = cos(cutoff) */
93 STATE_SPOT_CUTOFF
, /**< x = cutoff, yzw = undefined */
99 STATE_TEXGEN_OBJECT_S
,
100 STATE_TEXGEN_OBJECT_T
,
101 STATE_TEXGEN_OBJECT_R
,
102 STATE_TEXGEN_OBJECT_Q
,
106 STATE_NUM_SAMPLES
, /* An integer, not a float like the other state vars */
110 STATE_VERTEX_PROGRAM
,
111 STATE_FRAGMENT_PROGRAM
,
116 STATE_INTERNAL
, /* Mesa additions */
117 STATE_CURRENT_ATTRIB
, /* ctx->Current vertex attrib value */
118 STATE_CURRENT_ATTRIB_MAYBE_VP_CLAMPED
, /* ctx->Current vertex attrib value after passthrough vertex processing */
121 STATE_FOG_PARAMS_OPTIMIZED
, /* for faster fog calc */
122 STATE_POINT_SIZE_CLAMPED
, /* includes implementation dependent size clamp */
123 STATE_LIGHT_SPOT_DIR_NORMALIZED
, /* pre-normalized spot dir */
124 STATE_LIGHT_POSITION
, /* object vs eye space */
125 STATE_LIGHT_POSITION_NORMALIZED
, /* object vs eye space */
126 STATE_LIGHT_HALF_VECTOR
, /* object vs eye space */
127 STATE_PT_SCALE
, /**< Pixel transfer RGBA scale */
128 STATE_PT_BIAS
, /**< Pixel transfer RGBA bias */
129 STATE_FB_SIZE
, /**< (width-1, height-1, 0, 0) */
130 STATE_FB_WPOS_Y_TRANSFORM
, /**< (1, 0, -1, height) if a FBO is bound, (-1, height, 1, 0) otherwise */
131 STATE_TCS_PATCH_VERTICES_IN
, /**< gl_PatchVerticesIn for TCS (integer) */
132 STATE_TES_PATCH_VERTICES_IN
, /**< gl_PatchVerticesIn for TES (integer) */
133 STATE_INTERNAL_DRIVER
/* first available state index for drivers (must be last) */
139 _mesa_load_state_parameters(struct gl_context
*ctx
,
140 struct gl_program_parameter_list
*paramList
);
144 _mesa_program_state_flags(const gl_state_index state
[STATE_LENGTH
]);
148 _mesa_program_state_string(const gl_state_index state
[STATE_LENGTH
]);
156 #endif /* PROG_STATEVARS_H */