src/mesa/state_tracker/st_program.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 VMware, Inc.
   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 VMWARE 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 <keithw@vmware.com>
  31   */
  32
  33
  34 #ifndef ST_PROGRAM_H
  35 #define ST_PROGRAM_H
  36
  37 #include "main/mtypes.h"
  38 #include "main/atifragshader.h"
  39 #include "program/program.h"
  40 #include "pipe/p_state.h"
  41 #include "st_context.h"
  42 #include "st_glsl_to_tgsi.h"
  43
  44
  45 #ifdef __cplusplus
  46 extern "C" {
  47 #endif
  48
  49 #define ST_DOUBLE_ATTRIB_PLACEHOLDER 0xffffffff
  50
  51 /** Fragment program variant key */
  52 struct st_fp_variant_key
  53 {
  54    struct st_context *st;         /**< variants are per-context */
  55
  56    /** for glBitmap */
  57    GLuint bitmap:1;               /**< glBitmap variant? */
  58
  59    /** for glDrawPixels */
  60    GLuint drawpixels:1;           /**< glDrawPixels variant */
  61    GLuint scaleAndBias:1;         /**< glDrawPixels w/ scale and/or bias? */
  62    GLuint pixelMaps:1;            /**< glDrawPixels w/ pixel lookup map? */
  63
  64    /** for ARB_color_buffer_float */
  65    GLuint clamp_color:1;
  66
  67    /** for ARB_sample_shading */
  68    GLuint persample_shading:1;
  69
  70    /** needed for ATI_fragment_shader */
  71    GLuint fog:2;
  72
  73    /** needed for ATI_fragment_shader */
  74    char texture_targets[MAX_NUM_FRAGMENT_REGISTERS_ATI];
  75 };
  76
  77
  78 /**
  79  * Variant of a fragment program.
  80  */
  81 struct st_fp_variant
  82 {
  83    /** Parameters which generated this version of fragment program */
  84    struct st_fp_variant_key key;
  85
  86    /** Driver's compiled shader */
  87    void *driver_shader;
  88
  89    /** For glBitmap variants */
  90    uint bitmap_sampler;
  91
  92    /** For glDrawPixels variants */
  93    unsigned drawpix_sampler;
  94    unsigned pixelmap_sampler;
  95
  96    /** next in linked list */
  97    struct st_fp_variant *next;
  98 };
  99
 100
 101 /**
 102  * Derived from Mesa gl_fragment_program:
 103  */
 104 struct st_fragment_program
 105 {
 106    struct gl_fragment_program Base;
 107    struct pipe_shader_state tgsi;
 108    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 109    struct ati_fragment_shader *ati_fs;
 110
 111    /* used when bypassing glsl_to_tgsi: */
 112    struct gl_shader_program *shader_program;
 113
 114    struct st_fp_variant *variants;
 115 };
 116
 117
 118
 119 /** Vertex program variant key */
 120 struct st_vp_variant_key
 121 {
 122    struct st_context *st;          /**< variants are per-context */
 123    boolean passthrough_edgeflags;
 124
 125    /** for ARB_color_buffer_float */
 126    boolean clamp_color;
 127 };
 128
 129
 130 /**
 131  * This represents a vertex program, especially translated to match
 132  * the inputs of a particular fragment shader.
 133  */
 134 struct st_vp_variant
 135 {
 136    /* Parameters which generated this translated version of a vertex
 137     * shader:
 138     */
 139    struct st_vp_variant_key key;
 140
 141    /**
 142     * TGSI tokens (to later generate a 'draw' module shader for
 143     * selection/feedback/rasterpos)
 144     */
 145    struct pipe_shader_state tgsi;
 146
 147    /** Driver's compiled shader */
 148    void *driver_shader;
 149
 150    /** For using our private draw module (glRasterPos) */
 151    struct draw_vertex_shader *draw_shader;
 152
 153    /** Next in linked list */
 154    struct st_vp_variant *next;
 155
 156    /** similar to that in st_vertex_program, but with edgeflags info too */
 157    GLuint num_inputs;
 158 };
 159
 160
 161 /**
 162  * Derived from Mesa gl_fragment_program:
 163  */
 164 struct st_vertex_program
 165 {
 166    struct gl_vertex_program Base;  /**< The Mesa vertex program */
 167    struct pipe_shader_state tgsi;
 168    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 169
 170    /* used when bypassing glsl_to_tgsi: */
 171    struct gl_shader_program *shader_program;
 172
 173    /** maps a Mesa VERT_ATTRIB_x to a packed TGSI input index */
 174    /** maps a TGSI input index back to a Mesa VERT_ATTRIB_x */
 175    GLuint index_to_input[PIPE_MAX_SHADER_INPUTS];
 176    GLuint num_inputs;
 177
 178    /** Maps VARYING_SLOT_x to slot */
 179    GLuint result_to_output[VARYING_SLOT_MAX];
 180
 181    /** List of translated variants of this vertex program.
 182     */
 183    struct st_vp_variant *variants;
 184 };
 185
 186
 187
 188 /** Key shared by all shaders except VP, FP */
 189 struct st_basic_variant_key
 190 {
 191    struct st_context *st;          /**< variants are per-context */
 192 };
 193
 194
 195 /**
 196  * Geometry program variant.
 197  */
 198 struct st_basic_variant
 199 {
 200    /* Parameters which generated this variant. */
 201    struct st_basic_variant_key key;
 202
 203    void *driver_shader;
 204
 205    struct st_basic_variant *next;
 206 };
 207
 208
 209 /**
 210  * Derived from Mesa gl_geometry_program:
 211  */
 212 struct st_geometry_program
 213 {
 214    struct gl_geometry_program Base;  /**< The Mesa geometry program */
 215    struct pipe_shader_state tgsi;
 216    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 217
 218    struct st_basic_variant *variants;
 219 };
 220
 221
 222 /**
 223  * Derived from Mesa gl_tess_ctrl_program:
 224  */
 225 struct st_tessctrl_program
 226 {
 227    struct gl_tess_ctrl_program Base;  /**< The Mesa tess ctrl program */
 228    struct pipe_shader_state tgsi;
 229    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 230
 231    struct st_basic_variant *variants;
 232 };
 233
 234
 235 /**
 236  * Derived from Mesa gl_tess_eval_program:
 237  */
 238 struct st_tesseval_program
 239 {
 240    struct gl_tess_eval_program Base;  /**< The Mesa tess eval program */
 241    struct pipe_shader_state tgsi;
 242    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 243
 244    struct st_basic_variant *variants;
 245 };
 246
 247
 248 /**
 249  * Derived from Mesa gl_compute_program:
 250  */
 251 struct st_compute_program
 252 {
 253    struct gl_compute_program Base;  /**< The Mesa compute program */
 254    struct pipe_compute_state tgsi;
 255    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 256
 257    struct st_basic_variant *variants;
 258 };
 259
 260
 261 static inline struct st_fragment_program *
 262 st_fragment_program( struct gl_fragment_program *fp )
 263 {
 264    return (struct st_fragment_program *)fp;
 265 }
 266
 267
 268 static inline struct st_vertex_program *
 269 st_vertex_program( struct gl_vertex_program *vp )
 270 {
 271    return (struct st_vertex_program *)vp;
 272 }
 273
 274 static inline struct st_geometry_program *
 275 st_geometry_program( struct gl_geometry_program *gp )
 276 {
 277    return (struct st_geometry_program *)gp;
 278 }
 279
 280 static inline struct st_tessctrl_program *
 281 st_tessctrl_program( struct gl_tess_ctrl_program *tcp )
 282 {
 283    return (struct st_tessctrl_program *)tcp;
 284 }
 285
 286 static inline struct st_tesseval_program *
 287 st_tesseval_program( struct gl_tess_eval_program *tep )
 288 {
 289    return (struct st_tesseval_program *)tep;
 290 }
 291
 292 static inline struct st_compute_program *
 293 st_compute_program( struct gl_compute_program *cp )
 294 {
 295    return (struct st_compute_program *)cp;
 296 }
 297
 298 static inline void
 299 st_reference_vertprog(struct st_context *st,
 300                       struct st_vertex_program **ptr,
 301                       struct st_vertex_program *prog)
 302 {
 303    _mesa_reference_program(st->ctx,
 304                            (struct gl_program **) ptr,
 305                            (struct gl_program *) prog);
 306 }
 307
 308 static inline void
 309 st_reference_geomprog(struct st_context *st,
 310                       struct st_geometry_program **ptr,
 311                       struct st_geometry_program *prog)
 312 {
 313    _mesa_reference_program(st->ctx,
 314                            (struct gl_program **) ptr,
 315                            (struct gl_program *) prog);
 316 }
 317
 318 static inline void
 319 st_reference_fragprog(struct st_context *st,
 320                       struct st_fragment_program **ptr,
 321                       struct st_fragment_program *prog)
 322 {
 323    _mesa_reference_program(st->ctx,
 324                            (struct gl_program **) ptr,
 325                            (struct gl_program *) prog);
 326 }
 327
 328 static inline void
 329 st_reference_tesscprog(struct st_context *st,
 330                        struct st_tessctrl_program **ptr,
 331                        struct st_tessctrl_program *prog)
 332 {
 333    _mesa_reference_program(st->ctx,
 334                            (struct gl_program **) ptr,
 335                            (struct gl_program *) prog);
 336 }
 337
 338 static inline void
 339 st_reference_tesseprog(struct st_context *st,
 340                        struct st_tesseval_program **ptr,
 341                        struct st_tesseval_program *prog)
 342 {
 343    _mesa_reference_program(st->ctx,
 344                            (struct gl_program **) ptr,
 345                            (struct gl_program *) prog);
 346 }
 347
 348 static inline void
 349 st_reference_compprog(struct st_context *st,
 350                       struct st_compute_program **ptr,
 351                       struct st_compute_program *prog)
 352 {
 353    _mesa_reference_program(st->ctx,
 354                            (struct gl_program **) ptr,
 355                            (struct gl_program *) prog);
 356 }
 357
 358 /**
 359  * This defines mapping from Mesa VARYING_SLOTs to TGSI GENERIC slots.
 360  */
 361 static inline unsigned
 362 st_get_generic_varying_index(struct st_context *st, GLuint attr)
 363 {
 364    if (attr >= VARYING_SLOT_VAR0) {
 365       if (st->needs_texcoord_semantic)
 366          return attr - VARYING_SLOT_VAR0;
 367       else
 368          return 9 + (attr - VARYING_SLOT_VAR0);
 369    }
 370    if (attr == VARYING_SLOT_PNTC) {
 371       assert(!st->needs_texcoord_semantic);
 372       return 8;
 373    }
 374    if (attr >= VARYING_SLOT_TEX0 && attr <= VARYING_SLOT_TEX7) {
 375       assert(!st->needs_texcoord_semantic);
 376       return attr - VARYING_SLOT_TEX0;
 377    }
 378
 379    assert(0);
 380    return 0;
 381 }
 382
 383
 384 extern struct st_vp_variant *
 385 st_get_vp_variant(struct st_context *st,
 386                   struct st_vertex_program *stvp,
 387                   const struct st_vp_variant_key *key);
 388
 389
 390 extern struct st_fp_variant *
 391 st_get_fp_variant(struct st_context *st,
 392                   struct st_fragment_program *stfp,
 393                   const struct st_fp_variant_key *key);
 394
 395 extern struct st_basic_variant *
 396 st_get_cp_variant(struct st_context *st,
 397                   struct pipe_compute_state *tgsi,
 398                   struct st_basic_variant **variants);
 399
 400 extern struct st_basic_variant *
 401 st_get_basic_variant(struct st_context *st,
 402                      unsigned pipe_shader,
 403                      struct pipe_shader_state *tgsi,
 404                      struct st_basic_variant **variants);
 405
 406 extern void
 407 st_release_vp_variants( struct st_context *st,
 408                         struct st_vertex_program *stvp );
 409
 410 extern void
 411 st_release_fp_variants( struct st_context *st,
 412                         struct st_fragment_program *stfp );
 413
 414 extern void
 415 st_release_cp_variants(struct st_context *st,
 416                         struct st_compute_program *stcp);
 417
 418 extern void
 419 st_release_basic_variants(struct st_context *st, GLenum target,
 420                           struct st_basic_variant **variants,
 421                           struct pipe_shader_state *tgsi);
 422
 423 extern void
 424 st_destroy_program_variants(struct st_context *st);
 425
 426 extern bool
 427 st_translate_vertex_program(struct st_context *st,
 428                             struct st_vertex_program *stvp);
 429
 430 extern bool
 431 st_translate_fragment_program(struct st_context *st,
 432                               struct st_fragment_program *stfp);
 433
 434 extern bool
 435 st_translate_geometry_program(struct st_context *st,
 436                               struct st_geometry_program *stgp);
 437
 438 extern bool
 439 st_translate_tessctrl_program(struct st_context *st,
 440                               struct st_tessctrl_program *sttcp);
 441
 442 extern bool
 443 st_translate_tesseval_program(struct st_context *st,
 444                               struct st_tesseval_program *sttep);
 445
 446 extern bool
 447 st_translate_compute_program(struct st_context *st,
 448                              struct st_compute_program *stcp);
 449
 450 extern void
 451 st_print_current_vertex_program(void);
 452
 453 extern void
 454 st_precompile_shader_variant(struct st_context *st,
 455                              struct gl_program *prog);
 456
 457 #ifdef __cplusplus
 458 }
 459 #endif
 460
 461 #endif