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_state.h"
  40 #include "st_context.h"
  41
  42
  43 /**
  44  * Derived from Mesa gl_fragment_program:
  45  */
  46 struct st_fragment_program
  47 {
  48    struct gl_fragment_program Base;
  49    GLuint serialNo;
  50
  51    struct pipe_shader_state tgsi;
  52    void *driver_shader;
  53
  54    /** Program prefixed with glBitmap prologue */
  55    struct st_fragment_program *bitmap_program;
  56    uint bitmap_sampler;
  57 };
  58
  59
  60
  61 struct st_vp_varient_key
  62 {
  63    boolean passthrough_edgeflags;
  64 };
  65
  66
  67 /**
  68  * This represents a vertex program, especially translated to match
  69  * the inputs of a particular fragment shader.
  70  */
  71 struct st_vp_varient
  72 {
  73    /* Parameters which generated this translated version of a vertex
  74     * shader:
  75     */
  76    struct st_vp_varient_key key;
  77
  78    /**
  79     * TGSI tokens (to later generate a 'draw' module shader for
  80     * selection/feedback/rasterpos)
  81     */
  82    struct pipe_shader_state tgsi;
  83
  84    /** Driver's compiled shader */
  85    void *driver_shader;
  86
  87    /** For using our private draw module (glRasterPos) */
  88    struct draw_vertex_shader *draw_shader;
  89
  90    /** Next in linked list */
  91    struct st_vp_varient *next;
  92
  93    /** similar to that in st_vertex_program, but with information about edgeflags too */
  94    GLuint num_inputs;
  95 };
  96
  97
  98 /**
  99  * Derived from Mesa gl_fragment_program:
 100  */
 101 struct st_vertex_program
 102 {
 103    struct gl_vertex_program Base;  /**< The Mesa vertex program */
 104    GLuint serialNo, lastSerialNo;
 105
 106    /** maps a Mesa VERT_ATTRIB_x to a packed TGSI input index */
 107    GLuint input_to_index[VERT_ATTRIB_MAX];
 108    /** maps a TGSI input index back to a Mesa VERT_ATTRIB_x */
 109    GLuint index_to_input[PIPE_MAX_SHADER_INPUTS];
 110    GLuint num_inputs;
 111
 112    /** Maps VERT_RESULT_x to slot */
 113    GLuint result_to_output[VERT_RESULT_MAX];
 114    ubyte output_semantic_name[VERT_RESULT_MAX];
 115    ubyte output_semantic_index[VERT_RESULT_MAX];
 116    GLuint num_outputs;
 117
 118    /** List of translated varients of this vertex program.
 119     */
 120    struct st_vp_varient *varients;
 121 };
 122
 123 /**
 124  * Derived from Mesa gl_geometry_program:
 125  */
 126 struct st_geometry_program
 127 {
 128    struct gl_geometry_program Base;  /**< The Mesa geometry program */
 129    GLuint serialNo;
 130
 131    /** map GP input back to VP output */
 132    GLuint input_map[PIPE_MAX_SHADER_INPUTS];
 133
 134    /** maps a Mesa GEOM_ATTRIB_x to a packed TGSI input index */
 135    GLuint input_to_index[GEOM_ATTRIB_MAX];
 136    /** maps a TGSI input index back to a Mesa GEOM_ATTRIB_x */
 137    GLuint index_to_input[PIPE_MAX_SHADER_INPUTS];
 138
 139    GLuint num_inputs;
 140
 141    GLuint input_to_slot[GEOM_ATTRIB_MAX];  /**< Maps GEOM_ATTRIB_x to slot */
 142    GLuint num_input_slots;
 143
 144    ubyte input_semantic_name[PIPE_MAX_SHADER_INPUTS];
 145    ubyte input_semantic_index[PIPE_MAX_SHADER_INPUTS];
 146
 147    struct pipe_shader_state tgsi;
 148    void *driver_shader;
 149 };
 150
 151 static INLINE struct st_fragment_program *
 152 st_fragment_program( struct gl_fragment_program *fp )
 153 {
 154    return (struct st_fragment_program *)fp;
 155 }
 156
 157
 158 static INLINE struct st_vertex_program *
 159 st_vertex_program( struct gl_vertex_program *vp )
 160 {
 161    return (struct st_vertex_program *)vp;
 162 }
 163
 164 static INLINE struct st_geometry_program *
 165 st_geometry_program( struct gl_geometry_program *vp )
 166 {
 167    return (struct st_geometry_program *)vp;
 168 }
 169
 170 static INLINE void
 171 st_reference_vertprog(struct st_context *st,
 172                       struct st_vertex_program **ptr,
 173                       struct st_vertex_program *prog)
 174 {
 175    _mesa_reference_program(st->ctx,
 176                            (struct gl_program **) ptr,
 177                            (struct gl_program *) prog);
 178 }
 179
 180 static INLINE void
 181 st_reference_geomprog(struct st_context *st,
 182                       struct st_geometry_program **ptr,
 183                       struct st_geometry_program *prog)
 184 {
 185    _mesa_reference_program(st->ctx,
 186                            (struct gl_program **) ptr,
 187                            (struct gl_program *) prog);
 188 }
 189
 190 static INLINE void
 191 st_reference_fragprog(struct st_context *st,
 192                       struct st_fragment_program **ptr,
 193                       struct st_fragment_program *prog)
 194 {
 195    _mesa_reference_program(st->ctx,
 196                            (struct gl_program **) ptr,
 197                            (struct gl_program *) prog);
 198 }
 199
 200
 201 extern void
 202 st_translate_fragment_program(struct st_context *st,
 203                               struct st_fragment_program *fp);
 204
 205 extern void
 206 st_translate_geometry_program(struct st_context *st,
 207                               struct st_geometry_program *stgp);
 208
 209 /* Called after program string change, discard all previous
 210  * compilation results.
 211  */
 212 extern void
 213 st_prepare_vertex_program(struct st_context *st,
 214                           struct st_vertex_program *stvp);
 215
 216 extern struct st_vp_varient *
 217 st_translate_vertex_program(struct st_context *st,
 218                             struct st_vertex_program *stvp,
 219                             const struct st_vp_varient_key *key);
 220
 221 void
 222 st_vp_release_varients( struct st_context *st,
 223                         struct st_vertex_program *stvp );
 224
 225 extern void
 226 st_print_shaders(struct gl_context *ctx);
 227
 228
 229 #endif