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 "program/program.h"
  39 #include "pipe/p_state.h"
  40 #include "st_context.h"
  41 #include "st_glsl_to_tgsi.h"
  42
  43
  44 #ifdef __cplusplus
  45 extern "C" {
  46 #endif
  47
  48 #define ST_DOUBLE_ATTRIB_PLACEHOLDER 0xffffffff
  49
  50 /** Fragment program variant key */
  51 struct st_fp_variant_key
  52 {
  53    struct st_context *st;         /**< variants are per-context */
  54
  55    /** for glBitmap */
  56    GLuint bitmap:1;               /**< glBitmap variant? */
  57
  58    /** for glDrawPixels */
  59    GLuint drawpixels:1;           /**< glDrawPixels variant */
  60    GLuint scaleAndBias:1;         /**< glDrawPixels w/ scale and/or bias? */
  61    GLuint pixelMaps:1;            /**< glDrawPixels w/ pixel lookup map? */
  62
  63    /** for ARB_color_buffer_float */
  64    GLuint clamp_color:1;
  65
  66    /** for ARB_sample_shading */
  67    GLuint persample_shading:1;
  68 };
  69
  70
  71 /**
  72  * Variant of a fragment program.
  73  */
  74 struct st_fp_variant
  75 {
  76    /** Parameters which generated this version of fragment program */
  77    struct st_fp_variant_key key;
  78
  79    /** Driver's compiled shader */
  80    void *driver_shader;
  81
  82    /** For glBitmap variants */
  83    uint bitmap_sampler;
  84
  85    /** For glDrawPixels variants */
  86    unsigned drawpix_sampler;
  87    unsigned pixelmap_sampler;
  88
  89    /** next in linked list */
  90    struct st_fp_variant *next;
  91 };
  92
  93
  94 /**
  95  * Derived from Mesa gl_fragment_program:
  96  */
  97 struct st_fragment_program
  98 {
  99    struct gl_fragment_program Base;
 100    struct pipe_shader_state tgsi;
 101    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 102
 103    struct st_fp_variant *variants;
 104 };
 105
 106
 107
 108 /** Vertex program variant key */
 109 struct st_vp_variant_key
 110 {
 111    struct st_context *st;          /**< variants are per-context */
 112    boolean passthrough_edgeflags;
 113
 114    /** for ARB_color_buffer_float */
 115    boolean clamp_color;
 116 };
 117
 118
 119 /**
 120  * This represents a vertex program, especially translated to match
 121  * the inputs of a particular fragment shader.
 122  */
 123 struct st_vp_variant
 124 {
 125    /* Parameters which generated this translated version of a vertex
 126     * shader:
 127     */
 128    struct st_vp_variant_key key;
 129
 130    /**
 131     * TGSI tokens (to later generate a 'draw' module shader for
 132     * selection/feedback/rasterpos)
 133     */
 134    struct pipe_shader_state tgsi;
 135
 136    /** Driver's compiled shader */
 137    void *driver_shader;
 138
 139    /** For using our private draw module (glRasterPos) */
 140    struct draw_vertex_shader *draw_shader;
 141
 142    /** Next in linked list */
 143    struct st_vp_variant *next;
 144
 145    /** similar to that in st_vertex_program, but with edgeflags info too */
 146    GLuint num_inputs;
 147 };
 148
 149
 150 /**
 151  * Derived from Mesa gl_fragment_program:
 152  */
 153 struct st_vertex_program
 154 {
 155    struct gl_vertex_program Base;  /**< The Mesa vertex program */
 156    struct pipe_shader_state tgsi;
 157    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 158
 159    /** maps a Mesa VERT_ATTRIB_x to a packed TGSI input index */
 160    /** maps a TGSI input index back to a Mesa VERT_ATTRIB_x */
 161    GLuint index_to_input[PIPE_MAX_SHADER_INPUTS];
 162    GLuint num_inputs;
 163
 164    /** Maps VARYING_SLOT_x to slot */
 165    GLuint result_to_output[VARYING_SLOT_MAX];
 166
 167    /** List of translated variants of this vertex program.
 168     */
 169    struct st_vp_variant *variants;
 170 };
 171
 172
 173
 174 /** Geometry program variant key */
 175 struct st_gp_variant_key
 176 {
 177    struct st_context *st;          /**< variants are per-context */
 178    /* no other fields yet */
 179 };
 180
 181
 182 /**
 183  * Geometry program variant.
 184  */
 185 struct st_gp_variant
 186 {
 187    /* Parameters which generated this variant. */
 188    struct st_gp_variant_key key;
 189
 190    void *driver_shader;
 191
 192    struct st_gp_variant *next;
 193 };
 194
 195
 196 /**
 197  * Derived from Mesa gl_geometry_program:
 198  */
 199 struct st_geometry_program
 200 {
 201    struct gl_geometry_program Base;  /**< The Mesa geometry program */
 202    struct pipe_shader_state tgsi;
 203    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 204
 205    struct st_gp_variant *variants;
 206 };
 207
 208
 209
 210 /** Tessellation control program variant key */
 211 struct st_tcp_variant_key
 212 {
 213    struct st_context *st;          /**< variants are per-context */
 214    /* no other fields yet */
 215 };
 216
 217
 218 /**
 219  * Tessellation control program variant.
 220  */
 221 struct st_tcp_variant
 222 {
 223    /* Parameters which generated this variant. */
 224    struct st_tcp_variant_key key;
 225
 226    void *driver_shader;
 227
 228    struct st_tcp_variant *next;
 229 };
 230
 231
 232 /**
 233  * Derived from Mesa gl_tess_ctrl_program:
 234  */
 235 struct st_tessctrl_program
 236 {
 237    struct gl_tess_ctrl_program Base;  /**< The Mesa tess ctrl program */
 238    struct pipe_shader_state tgsi;
 239    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 240
 241    struct st_tcp_variant *variants;
 242 };
 243
 244
 245
 246 /** Tessellation evaluation program variant key */
 247 struct st_tep_variant_key
 248 {
 249    struct st_context *st;          /**< variants are per-context */
 250    /* no other fields yet */
 251 };
 252
 253
 254 /**
 255  * Tessellation evaluation program variant.
 256  */
 257 struct st_tep_variant
 258 {
 259    /* Parameters which generated this variant. */
 260    struct st_tep_variant_key key;
 261
 262    void *driver_shader;
 263
 264    struct st_tep_variant *next;
 265 };
 266
 267
 268 /**
 269  * Derived from Mesa gl_tess_eval_program:
 270  */
 271 struct st_tesseval_program
 272 {
 273    struct gl_tess_eval_program Base;  /**< The Mesa tess eval program */
 274    struct pipe_shader_state tgsi;
 275    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 276
 277    struct st_tep_variant *variants;
 278 };
 279
 280
 281
 282 static inline struct st_fragment_program *
 283 st_fragment_program( struct gl_fragment_program *fp )
 284 {
 285    return (struct st_fragment_program *)fp;
 286 }
 287
 288
 289 static inline struct st_vertex_program *
 290 st_vertex_program( struct gl_vertex_program *vp )
 291 {
 292    return (struct st_vertex_program *)vp;
 293 }
 294
 295 static inline struct st_geometry_program *
 296 st_geometry_program( struct gl_geometry_program *gp )
 297 {
 298    return (struct st_geometry_program *)gp;
 299 }
 300
 301 static inline struct st_tessctrl_program *
 302 st_tessctrl_program( struct gl_tess_ctrl_program *tcp )
 303 {
 304    return (struct st_tessctrl_program *)tcp;
 305 }
 306
 307 static inline struct st_tesseval_program *
 308 st_tesseval_program( struct gl_tess_eval_program *tep )
 309 {
 310    return (struct st_tesseval_program *)tep;
 311 }
 312
 313 static inline void
 314 st_reference_vertprog(struct st_context *st,
 315                       struct st_vertex_program **ptr,
 316                       struct st_vertex_program *prog)
 317 {
 318    _mesa_reference_program(st->ctx,
 319                            (struct gl_program **) ptr,
 320                            (struct gl_program *) prog);
 321 }
 322
 323 static inline void
 324 st_reference_geomprog(struct st_context *st,
 325                       struct st_geometry_program **ptr,
 326                       struct st_geometry_program *prog)
 327 {
 328    _mesa_reference_program(st->ctx,
 329                            (struct gl_program **) ptr,
 330                            (struct gl_program *) prog);
 331 }
 332
 333 static inline void
 334 st_reference_fragprog(struct st_context *st,
 335                       struct st_fragment_program **ptr,
 336                       struct st_fragment_program *prog)
 337 {
 338    _mesa_reference_program(st->ctx,
 339                            (struct gl_program **) ptr,
 340                            (struct gl_program *) prog);
 341 }
 342
 343 static inline void
 344 st_reference_tesscprog(struct st_context *st,
 345                        struct st_tessctrl_program **ptr,
 346                        struct st_tessctrl_program *prog)
 347 {
 348    _mesa_reference_program(st->ctx,
 349                            (struct gl_program **) ptr,
 350                            (struct gl_program *) prog);
 351 }
 352
 353 static inline void
 354 st_reference_tesseprog(struct st_context *st,
 355                        struct st_tesseval_program **ptr,
 356                        struct st_tesseval_program *prog)
 357 {
 358    _mesa_reference_program(st->ctx,
 359                            (struct gl_program **) ptr,
 360                            (struct gl_program *) prog);
 361 }
 362
 363 /**
 364  * This defines mapping from Mesa VARYING_SLOTs to TGSI GENERIC slots.
 365  */
 366 static inline unsigned
 367 st_get_generic_varying_index(struct st_context *st, GLuint attr)
 368 {
 369    if (attr >= VARYING_SLOT_VAR0) {
 370       if (st->needs_texcoord_semantic)
 371          return attr - VARYING_SLOT_VAR0;
 372       else
 373          return 9 + (attr - VARYING_SLOT_VAR0);
 374    }
 375    if (attr == VARYING_SLOT_PNTC) {
 376       assert(!st->needs_texcoord_semantic);
 377       return 8;
 378    }
 379    if (attr >= VARYING_SLOT_TEX0 && attr <= VARYING_SLOT_TEX7) {
 380       assert(!st->needs_texcoord_semantic);
 381       return attr - VARYING_SLOT_TEX0;
 382    }
 383
 384    assert(0);
 385    return 0;
 386 }
 387
 388
 389 extern struct st_vp_variant *
 390 st_get_vp_variant(struct st_context *st,
 391                   struct st_vertex_program *stvp,
 392                   const struct st_vp_variant_key *key);
 393
 394
 395 extern struct st_fp_variant *
 396 st_get_fp_variant(struct st_context *st,
 397                   struct st_fragment_program *stfp,
 398                   const struct st_fp_variant_key *key);
 399
 400
 401 extern struct st_gp_variant *
 402 st_get_gp_variant(struct st_context *st,
 403                   struct st_geometry_program *stgp,
 404                   const struct st_gp_variant_key *key);
 405
 406 extern struct st_tcp_variant *
 407 st_get_tcp_variant(struct st_context *st,
 408                    struct st_tessctrl_program *stgp,
 409                    const struct st_tcp_variant_key *key);
 410
 411 extern struct st_tep_variant *
 412 st_get_tep_variant(struct st_context *st,
 413                    struct st_tesseval_program *stgp,
 414                    const struct st_tep_variant_key *key);
 415
 416 extern void
 417 st_release_vp_variants( struct st_context *st,
 418                         struct st_vertex_program *stvp );
 419
 420 extern void
 421 st_release_fp_variants( struct st_context *st,
 422                         struct st_fragment_program *stfp );
 423
 424 extern void
 425 st_release_gp_variants(struct st_context *st,
 426                        struct st_geometry_program *stgp);
 427
 428 extern void
 429 st_release_tcp_variants(struct st_context *st,
 430                         struct st_tessctrl_program *stgp);
 431
 432 extern void
 433 st_release_tep_variants(struct st_context *st,
 434                         struct st_tesseval_program *stgp);
 435
 436 extern void
 437 st_destroy_program_variants(struct st_context *st);
 438
 439 extern bool
 440 st_translate_vertex_program(struct st_context *st,
 441                             struct st_vertex_program *stvp);
 442
 443 extern bool
 444 st_translate_fragment_program(struct st_context *st,
 445                               struct st_fragment_program *stfp);
 446
 447 extern bool
 448 st_translate_geometry_program(struct st_context *st,
 449                               struct st_geometry_program *stgp);
 450
 451 extern bool
 452 st_translate_tessctrl_program(struct st_context *st,
 453                               struct st_tessctrl_program *sttcp);
 454
 455 extern bool
 456 st_translate_tesseval_program(struct st_context *st,
 457                               struct st_tesseval_program *sttep);
 458
 459 extern void
 460 st_print_current_vertex_program(void);
 461
 462 extern void
 463 st_precompile_shader_variant(struct st_context *st,
 464                              struct gl_program *prog);
 465
 466 #ifdef __cplusplus
 467 }
 468 #endif
 469
 470 #endif