src/mesa/program/prog_statevars.h

   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  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23  * OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26 #ifndef PROG_STATEVARS_H
  27 #define PROG_STATEVARS_H
  28
  29
  30 #include "main/glheader.h"
  31
  32
  33 #ifdef __cplusplus
  34 extern "C" {
  35 #endif
  36
  37
  38 struct gl_context;
  39 struct gl_program_parameter_list;
  40
  41 /**
  42  * Number of STATE_* values we need to address any GL state.
  43  * Used to dimension arrays.
  44  */
  45 #define STATE_LENGTH 5
  46
  47
  48 /**
  49  * Used for describing GL state referenced from inside ARB vertex and
  50  * fragment programs.
  51  * A string such as "state.light[0].ambient" gets translated into a
  52  * sequence of tokens such as [ STATE_LIGHT, 0, STATE_AMBIENT ].
  53  *
  54  * For state that's an array, like STATE_CLIPPLANE, the 2nd token [1] should
  55  * always be the array index.
  56  */
  57 typedef enum gl_state_index_ {
  58    STATE_MATERIAL = 100,  /* start at 100 so small ints are seen as ints */
  59
  60    STATE_LIGHT,
  61    STATE_LIGHTMODEL_AMBIENT,
  62    STATE_LIGHTMODEL_SCENECOLOR,
  63    STATE_LIGHTPROD,
  64
  65    STATE_TEXGEN,
  66
  67    STATE_FOG_COLOR,
  68    STATE_FOG_PARAMS,
  69
  70    STATE_CLIPPLANE,
  71
  72    STATE_POINT_SIZE,
  73    STATE_POINT_ATTENUATION,
  74
  75    STATE_MODELVIEW_MATRIX,
  76    STATE_PROJECTION_MATRIX,
  77    STATE_MVP_MATRIX,
  78    STATE_TEXTURE_MATRIX,
  79    STATE_PROGRAM_MATRIX,
  80    STATE_MATRIX_INVERSE,
  81    STATE_MATRIX_TRANSPOSE,
  82    STATE_MATRIX_INVTRANS,
  83
  84    STATE_AMBIENT,
  85    STATE_DIFFUSE,
  86    STATE_SPECULAR,
  87    STATE_EMISSION,
  88    STATE_SHININESS,
  89    STATE_HALF_VECTOR,
  90
  91    STATE_POSITION,       /**< xyzw = position */
  92    STATE_ATTENUATION,    /**< xyz = attenuation, w = spot exponent */
  93    STATE_SPOT_DIRECTION, /**< xyz = direction, w = cos(cutoff) */
  94    STATE_SPOT_CUTOFF,    /**< x = cutoff, yzw = undefined */
  95
  96    STATE_TEXGEN_EYE_S,
  97    STATE_TEXGEN_EYE_T,
  98    STATE_TEXGEN_EYE_R,
  99    STATE_TEXGEN_EYE_Q,
 100    STATE_TEXGEN_OBJECT_S,
 101    STATE_TEXGEN_OBJECT_T,
 102    STATE_TEXGEN_OBJECT_R,
 103    STATE_TEXGEN_OBJECT_Q,
 104
 105    STATE_TEXENV_COLOR,
 106
 107    STATE_DEPTH_RANGE,
 108
 109    STATE_VERTEX_PROGRAM,
 110    STATE_FRAGMENT_PROGRAM,
 111
 112    STATE_ENV,
 113    STATE_LOCAL,
 114
 115    STATE_INTERNAL,              /* Mesa additions */
 116    STATE_CURRENT_ATTRIB,        /* ctx->Current vertex attrib value */
 117    STATE_CURRENT_ATTRIB_MAYBE_VP_CLAMPED,        /* ctx->Current vertex attrib value after passthrough vertex processing */
 118    STATE_NORMAL_SCALE,
 119    STATE_TEXRECT_SCALE,
 120    STATE_FOG_PARAMS_OPTIMIZED,  /* for faster fog calc */
 121    STATE_POINT_SIZE_CLAMPED,    /* includes implementation dependent size clamp */
 122    STATE_LIGHT_SPOT_DIR_NORMALIZED,   /* pre-normalized spot dir */
 123    STATE_LIGHT_POSITION,              /* object vs eye space */
 124    STATE_LIGHT_POSITION_NORMALIZED,   /* object vs eye space */
 125    STATE_LIGHT_HALF_VECTOR,           /* object vs eye space */
 126    STATE_PT_SCALE,              /**< Pixel transfer RGBA scale */
 127    STATE_PT_BIAS,               /**< Pixel transfer RGBA bias */
 128    STATE_FB_SIZE,               /**< (width-1, height-1, 0, 0) */
 129    STATE_FB_WPOS_Y_TRANSFORM,   /**< (1, 0, -1, height) if a FBO is bound, (-1, height, 1, 0) otherwise */
 130    STATE_ROT_MATRIX_0,          /**< ATI_envmap_bumpmap, rot matrix row 0 */
 131    STATE_ROT_MATRIX_1,          /**< ATI_envmap_bumpmap, rot matrix row 1 */
 132    STATE_INTERNAL_DRIVER        /* first available state index for drivers (must be last) */
 133 } gl_state_index;
 134
 135
 136
 137 extern void
 138 _mesa_load_state_parameters(struct gl_context *ctx,
 139                             struct gl_program_parameter_list *paramList);
 140
 141
 142 extern GLbitfield
 143 _mesa_program_state_flags(const gl_state_index state[STATE_LENGTH]);
 144
 145
 146 extern char *
 147 _mesa_program_state_string(const gl_state_index state[STATE_LENGTH]);
 148
 149
 150
 151 #ifdef __cplusplus
 152 }
 153 #endif
 154
 155 #endif /* PROG_STATEVARS_H */