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    struct st_fp_variant *variants;
 112 };
 113
 114
 115
 116 /** Vertex program variant key */
 117 struct st_vp_variant_key
 118 {
 119    struct st_context *st;          /**< variants are per-context */
 120    boolean passthrough_edgeflags;
 121
 122    /** for ARB_color_buffer_float */
 123    boolean clamp_color;
 124 };
 125
 126
 127 /**
 128  * This represents a vertex program, especially translated to match
 129  * the inputs of a particular fragment shader.
 130  */
 131 struct st_vp_variant
 132 {
 133    /* Parameters which generated this translated version of a vertex
 134     * shader:
 135     */
 136    struct st_vp_variant_key key;
 137
 138    /**
 139     * TGSI tokens (to later generate a 'draw' module shader for
 140     * selection/feedback/rasterpos)
 141     */
 142    struct pipe_shader_state tgsi;
 143
 144    /** Driver's compiled shader */
 145    void *driver_shader;
 146
 147    /** For using our private draw module (glRasterPos) */
 148    struct draw_vertex_shader *draw_shader;
 149
 150    /** Next in linked list */
 151    struct st_vp_variant *next;
 152
 153    /** similar to that in st_vertex_program, but with edgeflags info too */
 154    GLuint num_inputs;
 155 };
 156
 157
 158 /**
 159  * Derived from Mesa gl_fragment_program:
 160  */
 161 struct st_vertex_program
 162 {
 163    struct gl_vertex_program Base;  /**< The Mesa vertex program */
 164    struct pipe_shader_state tgsi;
 165    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 166
 167    /** maps a Mesa VERT_ATTRIB_x to a packed TGSI input index */
 168    /** maps a TGSI input index back to a Mesa VERT_ATTRIB_x */
 169    GLuint index_to_input[PIPE_MAX_SHADER_INPUTS];
 170    GLuint num_inputs;
 171
 172    /** Maps VARYING_SLOT_x to slot */
 173    GLuint result_to_output[VARYING_SLOT_MAX];
 174
 175    /** List of translated variants of this vertex program.
 176     */
 177    struct st_vp_variant *variants;
 178 };
 179
 180
 181
 182 /** Key shared by all shaders except VP, FP */
 183 struct st_basic_variant_key
 184 {
 185    struct st_context *st;          /**< variants are per-context */
 186 };
 187
 188
 189 /**
 190  * Geometry program variant.
 191  */
 192 struct st_basic_variant
 193 {
 194    /* Parameters which generated this variant. */
 195    struct st_basic_variant_key key;
 196
 197    void *driver_shader;
 198
 199    struct st_basic_variant *next;
 200 };
 201
 202
 203 /**
 204  * Derived from Mesa gl_geometry_program:
 205  */
 206 struct st_geometry_program
 207 {
 208    struct gl_geometry_program Base;  /**< The Mesa geometry program */
 209    struct pipe_shader_state tgsi;
 210    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 211
 212    struct st_basic_variant *variants;
 213 };
 214
 215
 216 /**
 217  * Derived from Mesa gl_tess_ctrl_program:
 218  */
 219 struct st_tessctrl_program
 220 {
 221    struct gl_tess_ctrl_program Base;  /**< The Mesa tess ctrl program */
 222    struct pipe_shader_state tgsi;
 223    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 224
 225    struct st_basic_variant *variants;
 226 };
 227
 228
 229 /**
 230  * Derived from Mesa gl_tess_eval_program:
 231  */
 232 struct st_tesseval_program
 233 {
 234    struct gl_tess_eval_program Base;  /**< The Mesa tess eval program */
 235    struct pipe_shader_state tgsi;
 236    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 237
 238    struct st_basic_variant *variants;
 239 };
 240
 241
 242 /**
 243  * Derived from Mesa gl_compute_program:
 244  */
 245 struct st_compute_program
 246 {
 247    struct gl_compute_program Base;  /**< The Mesa compute program */
 248    struct pipe_compute_state tgsi;
 249    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 250
 251    struct st_basic_variant *variants;
 252 };
 253
 254
 255 static inline struct st_fragment_program *
 256 st_fragment_program( struct gl_fragment_program *fp )
 257 {
 258    return (struct st_fragment_program *)fp;
 259 }
 260
 261
 262 static inline struct st_vertex_program *
 263 st_vertex_program( struct gl_vertex_program *vp )
 264 {
 265    return (struct st_vertex_program *)vp;
 266 }
 267
 268 static inline struct st_geometry_program *
 269 st_geometry_program( struct gl_geometry_program *gp )
 270 {
 271    return (struct st_geometry_program *)gp;
 272 }
 273
 274 static inline struct st_tessctrl_program *
 275 st_tessctrl_program( struct gl_tess_ctrl_program *tcp )
 276 {
 277    return (struct st_tessctrl_program *)tcp;
 278 }
 279
 280 static inline struct st_tesseval_program *
 281 st_tesseval_program( struct gl_tess_eval_program *tep )
 282 {
 283    return (struct st_tesseval_program *)tep;
 284 }
 285
 286 static inline struct st_compute_program *
 287 st_compute_program( struct gl_compute_program *cp )
 288 {
 289    return (struct st_compute_program *)cp;
 290 }
 291
 292 static inline void
 293 st_reference_vertprog(struct st_context *st,
 294                       struct st_vertex_program **ptr,
 295                       struct st_vertex_program *prog)
 296 {
 297    _mesa_reference_program(st->ctx,
 298                            (struct gl_program **) ptr,
 299                            (struct gl_program *) prog);
 300 }
 301
 302 static inline void
 303 st_reference_geomprog(struct st_context *st,
 304                       struct st_geometry_program **ptr,
 305                       struct st_geometry_program *prog)
 306 {
 307    _mesa_reference_program(st->ctx,
 308                            (struct gl_program **) ptr,
 309                            (struct gl_program *) prog);
 310 }
 311
 312 static inline void
 313 st_reference_fragprog(struct st_context *st,
 314                       struct st_fragment_program **ptr,
 315                       struct st_fragment_program *prog)
 316 {
 317    _mesa_reference_program(st->ctx,
 318                            (struct gl_program **) ptr,
 319                            (struct gl_program *) prog);
 320 }
 321
 322 static inline void
 323 st_reference_tesscprog(struct st_context *st,
 324                        struct st_tessctrl_program **ptr,
 325                        struct st_tessctrl_program *prog)
 326 {
 327    _mesa_reference_program(st->ctx,
 328                            (struct gl_program **) ptr,
 329                            (struct gl_program *) prog);
 330 }
 331
 332 static inline void
 333 st_reference_tesseprog(struct st_context *st,
 334                        struct st_tesseval_program **ptr,
 335                        struct st_tesseval_program *prog)
 336 {
 337    _mesa_reference_program(st->ctx,
 338                            (struct gl_program **) ptr,
 339                            (struct gl_program *) prog);
 340 }
 341
 342 static inline void
 343 st_reference_compprog(struct st_context *st,
 344                       struct st_compute_program **ptr,
 345                       struct st_compute_program *prog)
 346 {
 347    _mesa_reference_program(st->ctx,
 348                            (struct gl_program **) ptr,
 349                            (struct gl_program *) prog);
 350 }
 351
 352 /**
 353  * This defines mapping from Mesa VARYING_SLOTs to TGSI GENERIC slots.
 354  */
 355 static inline unsigned
 356 st_get_generic_varying_index(struct st_context *st, GLuint attr)
 357 {
 358    if (attr >= VARYING_SLOT_VAR0) {
 359       if (st->needs_texcoord_semantic)
 360          return attr - VARYING_SLOT_VAR0;
 361       else
 362          return 9 + (attr - VARYING_SLOT_VAR0);
 363    }
 364    if (attr == VARYING_SLOT_PNTC) {
 365       assert(!st->needs_texcoord_semantic);
 366       return 8;
 367    }
 368    if (attr >= VARYING_SLOT_TEX0 && attr <= VARYING_SLOT_TEX7) {
 369       assert(!st->needs_texcoord_semantic);
 370       return attr - VARYING_SLOT_TEX0;
 371    }
 372
 373    assert(0);
 374    return 0;
 375 }
 376
 377
 378 extern struct st_vp_variant *
 379 st_get_vp_variant(struct st_context *st,
 380                   struct st_vertex_program *stvp,
 381                   const struct st_vp_variant_key *key);
 382
 383
 384 extern struct st_fp_variant *
 385 st_get_fp_variant(struct st_context *st,
 386                   struct st_fragment_program *stfp,
 387                   const struct st_fp_variant_key *key);
 388
 389 extern struct st_basic_variant *
 390 st_get_cp_variant(struct st_context *st,
 391                   struct pipe_compute_state *tgsi,
 392                   struct st_basic_variant **variants);
 393
 394 extern struct st_basic_variant *
 395 st_get_basic_variant(struct st_context *st,
 396                      unsigned pipe_shader,
 397                      struct pipe_shader_state *tgsi,
 398                      struct st_basic_variant **variants);
 399
 400 extern void
 401 st_release_vp_variants( struct st_context *st,
 402                         struct st_vertex_program *stvp );
 403
 404 extern void
 405 st_release_fp_variants( struct st_context *st,
 406                         struct st_fragment_program *stfp );
 407
 408 extern void
 409 st_release_cp_variants(struct st_context *st,
 410                         struct st_compute_program *stcp);
 411
 412 extern void
 413 st_release_basic_variants(struct st_context *st, GLenum target,
 414                           struct st_basic_variant **variants,
 415                           struct pipe_shader_state *tgsi);
 416
 417 extern void
 418 st_destroy_program_variants(struct st_context *st);
 419
 420 extern bool
 421 st_translate_vertex_program(struct st_context *st,
 422                             struct st_vertex_program *stvp);
 423
 424 extern bool
 425 st_translate_fragment_program(struct st_context *st,
 426                               struct st_fragment_program *stfp);
 427
 428 extern bool
 429 st_translate_geometry_program(struct st_context *st,
 430                               struct st_geometry_program *stgp);
 431
 432 extern bool
 433 st_translate_tessctrl_program(struct st_context *st,
 434                               struct st_tessctrl_program *sttcp);
 435
 436 extern bool
 437 st_translate_tesseval_program(struct st_context *st,
 438                               struct st_tesseval_program *sttep);
 439
 440 extern bool
 441 st_translate_compute_program(struct st_context *st,
 442                              struct st_compute_program *stcp);
 443
 444 extern void
 445 st_print_current_vertex_program(void);
 446
 447 extern void
 448 st_precompile_shader_variant(struct st_context *st,
 449                              struct gl_program *prog);
 450
 451 #ifdef __cplusplus
 452 }
 453 #endif
 454
 455 #endif