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