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 #include "st_glsl_to_tgsi.h"
  42
  43
  44 /** Fragment program variant key */
  45 struct st_fp_variant_key
  46 {
  47    struct st_context *st;         /**< variants are per-context */
  48
  49    /** for glBitmap */
  50    GLuint bitmap:1;               /**< glBitmap variant? */
  51
  52    /** for glDrawPixels */
  53    GLuint drawpixels:1;           /**< glDrawPixels variant */
  54    GLuint scaleAndBias:1;         /**< glDrawPixels w/ scale and/or bias? */
  55    GLuint pixelMaps:1;            /**< glDrawPixels w/ pixel lookup map? */
  56    GLuint drawpixels_z:1;         /**< glDrawPixels(GL_DEPTH) */
  57    GLuint drawpixels_stencil:1;   /**< glDrawPixels(GL_STENCIL) */
  58 };
  59
  60
  61 /**
  62  * Variant of a fragment program.
  63  */
  64 struct st_fp_variant
  65 {
  66    /** Parameters which generated this version of fragment program */
  67    struct st_fp_variant_key key;
  68
  69    /** Driver's compiled shader */
  70    void *driver_shader;
  71
  72    /** For glBitmap variants */
  73    struct gl_program_parameter_list *parameters;
  74    uint bitmap_sampler;
  75
  76    /** next in linked list */
  77    struct st_fp_variant *next;
  78 };
  79
  80
  81 /**
  82  * Derived from Mesa gl_fragment_program:
  83  */
  84 struct st_fragment_program
  85 {
  86    struct gl_fragment_program Base;
  87    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
  88
  89    struct pipe_shader_state tgsi;
  90
  91    struct st_fp_variant *variants;
  92 };
  93
  94
  95
  96 /** Vertex program variant key */
  97 struct st_vp_variant_key
  98 {
  99    struct st_context *st;          /**< variants are per-context */
 100    boolean passthrough_edgeflags;
 101 };
 102
 103
 104 /**
 105  * This represents a vertex program, especially translated to match
 106  * the inputs of a particular fragment shader.
 107  */
 108 struct st_vp_variant
 109 {
 110    /* Parameters which generated this translated version of a vertex
 111     * shader:
 112     */
 113    struct st_vp_variant_key key;
 114
 115    /**
 116     * TGSI tokens (to later generate a 'draw' module shader for
 117     * selection/feedback/rasterpos)
 118     */
 119    struct pipe_shader_state tgsi;
 120
 121    /** Driver's compiled shader */
 122    void *driver_shader;
 123
 124    /** For using our private draw module (glRasterPos) */
 125    struct draw_vertex_shader *draw_shader;
 126
 127    /** Next in linked list */
 128    struct st_vp_variant *next;
 129
 130    /** similar to that in st_vertex_program, but with edgeflags info too */
 131    GLuint num_inputs;
 132 };
 133
 134
 135 /**
 136  * Derived from Mesa gl_fragment_program:
 137  */
 138 struct st_vertex_program
 139 {
 140    struct gl_vertex_program Base;  /**< The Mesa vertex program */
 141    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 142
 143    /** maps a Mesa VERT_ATTRIB_x to a packed TGSI input index */
 144    GLuint input_to_index[VERT_ATTRIB_MAX];
 145    /** maps a TGSI input index back to a Mesa VERT_ATTRIB_x */
 146    GLuint index_to_input[PIPE_MAX_SHADER_INPUTS];
 147    GLuint num_inputs;
 148
 149    /** Maps VERT_RESULT_x to slot */
 150    GLuint result_to_output[VERT_RESULT_MAX];
 151    ubyte output_semantic_name[VERT_RESULT_MAX];
 152    ubyte output_semantic_index[VERT_RESULT_MAX];
 153    GLuint num_outputs;
 154
 155    /** List of translated variants of this vertex program.
 156     */
 157    struct st_vp_variant *variants;
 158 };
 159
 160
 161
 162 /** Geometry program variant key */
 163 struct st_gp_variant_key
 164 {
 165    struct st_context *st;          /**< variants are per-context */
 166    /* no other fields yet */
 167 };
 168
 169
 170 /**
 171  * Geometry program variant.
 172  */
 173 struct st_gp_variant
 174 {
 175    /* Parameters which generated this translated version of a vertex */
 176    struct st_gp_variant_key key;
 177
 178    void *driver_shader;
 179
 180    struct st_gp_variant *next;
 181 };
 182
 183
 184 /**
 185  * Derived from Mesa gl_geometry_program:
 186  */
 187 struct st_geometry_program
 188 {
 189    struct gl_geometry_program Base;  /**< The Mesa geometry program */
 190    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 191
 192    /** map GP input back to VP output */
 193    GLuint input_map[PIPE_MAX_SHADER_INPUTS];
 194
 195    /** maps a Mesa GEOM_ATTRIB_x to a packed TGSI input index */
 196    GLuint input_to_index[GEOM_ATTRIB_MAX];
 197    /** maps a TGSI input index back to a Mesa GEOM_ATTRIB_x */
 198    GLuint index_to_input[PIPE_MAX_SHADER_INPUTS];
 199
 200    GLuint num_inputs;
 201
 202    GLuint input_to_slot[GEOM_ATTRIB_MAX];  /**< Maps GEOM_ATTRIB_x to slot */
 203    GLuint num_input_slots;
 204
 205    ubyte input_semantic_name[PIPE_MAX_SHADER_INPUTS];
 206    ubyte input_semantic_index[PIPE_MAX_SHADER_INPUTS];
 207
 208    struct pipe_shader_state tgsi;
 209
 210    struct st_gp_variant *variants;
 211 };
 212
 213
 214
 215 static INLINE struct st_fragment_program *
 216 st_fragment_program( struct gl_fragment_program *fp )
 217 {
 218    return (struct st_fragment_program *)fp;
 219 }
 220
 221
 222 static INLINE struct st_vertex_program *
 223 st_vertex_program( struct gl_vertex_program *vp )
 224 {
 225    return (struct st_vertex_program *)vp;
 226 }
 227
 228 static INLINE struct st_geometry_program *
 229 st_geometry_program( struct gl_geometry_program *gp )
 230 {
 231    return (struct st_geometry_program *)gp;
 232 }
 233
 234 static INLINE void
 235 st_reference_vertprog(struct st_context *st,
 236                       struct st_vertex_program **ptr,
 237                       struct st_vertex_program *prog)
 238 {
 239    _mesa_reference_program(st->ctx,
 240                            (struct gl_program **) ptr,
 241                            (struct gl_program *) prog);
 242 }
 243
 244 static INLINE void
 245 st_reference_geomprog(struct st_context *st,
 246                       struct st_geometry_program **ptr,
 247                       struct st_geometry_program *prog)
 248 {
 249    _mesa_reference_program(st->ctx,
 250                            (struct gl_program **) ptr,
 251                            (struct gl_program *) prog);
 252 }
 253
 254 static INLINE void
 255 st_reference_fragprog(struct st_context *st,
 256                       struct st_fragment_program **ptr,
 257                       struct st_fragment_program *prog)
 258 {
 259    _mesa_reference_program(st->ctx,
 260                            (struct gl_program **) ptr,
 261                            (struct gl_program *) prog);
 262 }
 263
 264
 265 extern struct st_vp_variant *
 266 st_get_vp_variant(struct st_context *st,
 267                   struct st_vertex_program *stvp,
 268                   const struct st_vp_variant_key *key);
 269
 270
 271 extern struct st_fp_variant *
 272 st_get_fp_variant(struct st_context *st,
 273                   struct st_fragment_program *stfp,
 274                   const struct st_fp_variant_key *key);
 275
 276
 277 extern struct st_gp_variant *
 278 st_get_gp_variant(struct st_context *st,
 279                   struct st_geometry_program *stgp,
 280                   const struct st_gp_variant_key *key);
 281
 282
 283 extern void
 284 st_prepare_vertex_program(struct gl_context *ctx,
 285                           struct st_vertex_program *stvp);
 286
 287 extern GLboolean
 288 st_prepare_fragment_program(struct gl_context *ctx,
 289                             struct st_fragment_program *stfp);
 290
 291
 292 extern void
 293 st_release_vp_variants( struct st_context *st,
 294                         struct st_vertex_program *stvp );
 295
 296 extern void
 297 st_release_fp_variants( struct st_context *st,
 298                         struct st_fragment_program *stfp );
 299
 300 extern void
 301 st_release_gp_variants(struct st_context *st,
 302                        struct st_geometry_program *stgp);
 303
 304
 305 extern void
 306 st_print_shaders(struct gl_context *ctx);
 307
 308 extern void
 309 st_destroy_program_variants(struct st_context *st);
 310
 311
 312 #endif