src/mesa/state_tracker/st_program.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28  /*
  29   * Authors:
  30   *   Keith Whitwell <keith@tungstengraphics.com>
  31   */
  32
  33
  34 #ifndef ST_PROGRAM_H
  35 #define ST_PROGRAM_H
  36
  37 #include "main/mtypes.h"
  38 #include "program/program.h"
  39 #include "pipe/p_shader_tokens.h"
  40
  41
  42 struct cso_fragment_shader;
  43 struct cso_vertex_shader;
  44
  45
  46 /**
  47  * Derived from Mesa gl_fragment_program:
  48  */
  49 struct st_fragment_program
  50 {
  51    struct gl_fragment_program Base;
  52    GLuint serialNo;
  53
  54    struct pipe_shader_state tgsi;
  55    void *driver_shader;
  56
  57    /** Program prefixed with glBitmap prologue */
  58    struct st_fragment_program *bitmap_program;
  59    uint bitmap_sampler;
  60 };
  61
  62
  63
  64 struct st_vp_varient_key
  65 {
  66    boolean passthrough_edgeflags;
  67 };
  68
  69
  70 /**
  71  * This represents a vertex program, especially translated to match
  72  * the inputs of a particular fragment shader.
  73  */
  74 struct st_vp_varient
  75 {
  76    /* Parameters which generated this translated version of a vertex
  77     * shader:
  78     */
  79    struct st_vp_varient_key key;
  80
  81    /**
  82     * TGSI tokens (to later generate a 'draw' module shader for
  83     * selection/feedback/rasterpos)
  84     */
  85    struct pipe_shader_state tgsi;
  86
  87    /** Driver's compiled shader */
  88    void *driver_shader;
  89
  90    /** For using our private draw module (glRasterPos) */
  91    struct draw_vertex_shader *draw_shader;
  92
  93    /** Next in linked list */
  94    struct st_vp_varient *next;
  95
  96    /** similar to that in st_vertex_program, but with information about edgeflags too */
  97    GLuint num_inputs;
  98 };
  99
 100
 101 /**
 102  * Derived from Mesa gl_fragment_program:
 103  */
 104 struct st_vertex_program
 105 {
 106    struct gl_vertex_program Base;  /**< The Mesa vertex program */
 107    GLuint serialNo, lastSerialNo;
 108
 109    /** maps a Mesa VERT_ATTRIB_x to a packed TGSI input index */
 110    GLuint input_to_index[VERT_ATTRIB_MAX];
 111    /** maps a TGSI input index back to a Mesa VERT_ATTRIB_x */
 112    GLuint index_to_input[PIPE_MAX_SHADER_INPUTS];
 113    GLuint num_inputs;
 114
 115    /** Maps VERT_RESULT_x to slot */
 116    GLuint result_to_output[VERT_RESULT_MAX];
 117    ubyte output_semantic_name[VERT_RESULT_MAX];
 118    ubyte output_semantic_index[VERT_RESULT_MAX];
 119    GLuint num_outputs;
 120
 121    /** List of translated varients of this vertex program.
 122     */
 123    struct st_vp_varient *varients;
 124 };
 125
 126 /**
 127  * Derived from Mesa gl_geometry_program:
 128  */
 129 struct st_geometry_program
 130 {
 131    struct gl_geometry_program Base;  /**< The Mesa geometry program */
 132    GLuint serialNo;
 133
 134    /** map GP input back to VP output */
 135    GLuint input_map[PIPE_MAX_SHADER_INPUTS];
 136
 137    /** maps a Mesa GEOM_ATTRIB_x to a packed TGSI input index */
 138    GLuint input_to_index[GEOM_ATTRIB_MAX];
 139    /** maps a TGSI input index back to a Mesa GEOM_ATTRIB_x */
 140    GLuint index_to_input[PIPE_MAX_SHADER_INPUTS];
 141
 142    GLuint num_inputs;
 143
 144    GLuint input_to_slot[GEOM_ATTRIB_MAX];  /**< Maps GEOM_ATTRIB_x to slot */
 145    GLuint num_input_slots;
 146
 147    ubyte input_semantic_name[PIPE_MAX_SHADER_INPUTS];
 148    ubyte input_semantic_index[PIPE_MAX_SHADER_INPUTS];
 149
 150    struct pipe_shader_state tgsi;
 151    void *driver_shader;
 152 };
 153
 154 static INLINE struct st_fragment_program *
 155 st_fragment_program( struct gl_fragment_program *fp )
 156 {
 157    return (struct st_fragment_program *)fp;
 158 }
 159
 160
 161 static INLINE struct st_vertex_program *
 162 st_vertex_program( struct gl_vertex_program *vp )
 163 {
 164    return (struct st_vertex_program *)vp;
 165 }
 166
 167 static INLINE struct st_geometry_program *
 168 st_geometry_program( struct gl_geometry_program *vp )
 169 {
 170    return (struct st_geometry_program *)vp;
 171 }
 172
 173 static INLINE void
 174 st_reference_vertprog(struct st_context *st,
 175                       struct st_vertex_program **ptr,
 176                       struct st_vertex_program *prog)
 177 {
 178    _mesa_reference_program(st->ctx,
 179                            (struct gl_program **) ptr,
 180                            (struct gl_program *) prog);
 181 }
 182
 183 static INLINE void
 184 st_reference_geomprog(struct st_context *st,
 185                       struct st_geometry_program **ptr,
 186                       struct st_geometry_program *prog)
 187 {
 188    _mesa_reference_program(st->ctx,
 189                            (struct gl_program **) ptr,
 190                            (struct gl_program *) prog);
 191 }
 192
 193 static INLINE void
 194 st_reference_fragprog(struct st_context *st,
 195                       struct st_fragment_program **ptr,
 196                       struct st_fragment_program *prog)
 197 {
 198    _mesa_reference_program(st->ctx,
 199                            (struct gl_program **) ptr,
 200                            (struct gl_program *) prog);
 201 }
 202
 203
 204 extern void
 205 st_translate_fragment_program(struct st_context *st,
 206                               struct st_fragment_program *fp);
 207
 208 extern void
 209 st_translate_geometry_program(struct st_context *st,
 210                               struct st_geometry_program *stgp);
 211
 212 /* Called after program string change, discard all previous
 213  * compilation results.
 214  */
 215 extern void
 216 st_prepare_vertex_program(struct st_context *st,
 217                           struct st_vertex_program *stvp);
 218
 219 extern struct st_vp_varient *
 220 st_translate_vertex_program(struct st_context *st,
 221                             struct st_vertex_program *stvp,
 222                             const struct st_vp_varient_key *key);
 223
 224 void
 225 st_vp_release_varients( struct st_context *st,
 226                         struct st_vertex_program *stvp );
 227
 228 extern void
 229 st_print_shaders(GLcontext *ctx);
 230
 231
 232 #endif