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    struct gl_program_parameter_list *parameters;
  84    uint bitmap_sampler;
  85
  86    /** For glDrawPixels variants */
  87    unsigned drawpix_sampler;
  88    unsigned pixelmap_sampler;
  89
  90    /** next in linked list */
  91    struct st_fp_variant *next;
  92 };
  93
  94
  95 /**
  96  * Derived from Mesa gl_fragment_program:
  97  */
  98 struct st_fragment_program
  99 {
 100    struct gl_fragment_program Base;
 101    struct pipe_shader_state tgsi;
 102    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 103
 104    struct st_fp_variant *variants;
 105 };
 106
 107
 108
 109 /** Vertex program variant key */
 110 struct st_vp_variant_key
 111 {
 112    struct st_context *st;          /**< variants are per-context */
 113    boolean passthrough_edgeflags;
 114
 115    /** for ARB_color_buffer_float */
 116    boolean clamp_color;
 117 };
 118
 119
 120 /**
 121  * This represents a vertex program, especially translated to match
 122  * the inputs of a particular fragment shader.
 123  */
 124 struct st_vp_variant
 125 {
 126    /* Parameters which generated this translated version of a vertex
 127     * shader:
 128     */
 129    struct st_vp_variant_key key;
 130
 131    /**
 132     * TGSI tokens (to later generate a 'draw' module shader for
 133     * selection/feedback/rasterpos)
 134     */
 135    struct pipe_shader_state tgsi;
 136
 137    /** Driver's compiled shader */
 138    void *driver_shader;
 139
 140    /** For using our private draw module (glRasterPos) */
 141    struct draw_vertex_shader *draw_shader;
 142
 143    /** Next in linked list */
 144    struct st_vp_variant *next;
 145
 146    /** similar to that in st_vertex_program, but with edgeflags info too */
 147    GLuint num_inputs;
 148 };
 149
 150
 151 /**
 152  * Derived from Mesa gl_fragment_program:
 153  */
 154 struct st_vertex_program
 155 {
 156    struct gl_vertex_program Base;  /**< The Mesa vertex program */
 157    struct pipe_shader_state tgsi;
 158    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 159
 160    /** maps a Mesa VERT_ATTRIB_x to a packed TGSI input index */
 161    /** maps a TGSI input index back to a Mesa VERT_ATTRIB_x */
 162    GLuint index_to_input[PIPE_MAX_SHADER_INPUTS];
 163    GLuint num_inputs;
 164
 165    /** Maps VARYING_SLOT_x to slot */
 166    GLuint result_to_output[VARYING_SLOT_MAX];
 167
 168    /** List of translated variants of this vertex program.
 169     */
 170    struct st_vp_variant *variants;
 171 };
 172
 173
 174
 175 /** Geometry program variant key */
 176 struct st_gp_variant_key
 177 {
 178    struct st_context *st;          /**< variants are per-context */
 179    /* no other fields yet */
 180 };
 181
 182
 183 /**
 184  * Geometry program variant.
 185  */
 186 struct st_gp_variant
 187 {
 188    /* Parameters which generated this variant. */
 189    struct st_gp_variant_key key;
 190
 191    void *driver_shader;
 192
 193    struct st_gp_variant *next;
 194 };
 195
 196
 197 /**
 198  * Derived from Mesa gl_geometry_program:
 199  */
 200 struct st_geometry_program
 201 {
 202    struct gl_geometry_program Base;  /**< The Mesa geometry program */
 203    struct pipe_shader_state tgsi;
 204    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 205
 206    struct st_gp_variant *variants;
 207 };
 208
 209
 210
 211 /** Tessellation control program variant key */
 212 struct st_tcp_variant_key
 213 {
 214    struct st_context *st;          /**< variants are per-context */
 215    /* no other fields yet */
 216 };
 217
 218
 219 /**
 220  * Tessellation control program variant.
 221  */
 222 struct st_tcp_variant
 223 {
 224    /* Parameters which generated this variant. */
 225    struct st_tcp_variant_key key;
 226
 227    void *driver_shader;
 228
 229    struct st_tcp_variant *next;
 230 };
 231
 232
 233 /**
 234  * Derived from Mesa gl_tess_ctrl_program:
 235  */
 236 struct st_tessctrl_program
 237 {
 238    struct gl_tess_ctrl_program Base;  /**< The Mesa tess ctrl program */
 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 glsl_to_tgsi_visitor* glsl_to_tgsi;
 275
 276    struct st_tep_variant *variants;
 277 };
 278
 279
 280
 281 static inline struct st_fragment_program *
 282 st_fragment_program( struct gl_fragment_program *fp )
 283 {
 284    return (struct st_fragment_program *)fp;
 285 }
 286
 287
 288 static inline struct st_vertex_program *
 289 st_vertex_program( struct gl_vertex_program *vp )
 290 {
 291    return (struct st_vertex_program *)vp;
 292 }
 293
 294 static inline struct st_geometry_program *
 295 st_geometry_program( struct gl_geometry_program *gp )
 296 {
 297    return (struct st_geometry_program *)gp;
 298 }
 299
 300 static inline struct st_tessctrl_program *
 301 st_tessctrl_program( struct gl_tess_ctrl_program *tcp )
 302 {
 303    return (struct st_tessctrl_program *)tcp;
 304 }
 305
 306 static inline struct st_tesseval_program *
 307 st_tesseval_program( struct gl_tess_eval_program *tep )
 308 {
 309    return (struct st_tesseval_program *)tep;
 310 }
 311
 312 static inline void
 313 st_reference_vertprog(struct st_context *st,
 314                       struct st_vertex_program **ptr,
 315                       struct st_vertex_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_geomprog(struct st_context *st,
 324                       struct st_geometry_program **ptr,
 325                       struct st_geometry_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_fragprog(struct st_context *st,
 334                       struct st_fragment_program **ptr,
 335                       struct st_fragment_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_tesscprog(struct st_context *st,
 344                        struct st_tessctrl_program **ptr,
 345                        struct st_tessctrl_program *prog)
 346 {
 347    _mesa_reference_program(st->ctx,
 348                            (struct gl_program **) ptr,
 349                            (struct gl_program *) prog);
 350 }
 351
 352 static inline void
 353 st_reference_tesseprog(struct st_context *st,
 354                        struct st_tesseval_program **ptr,
 355                        struct st_tesseval_program *prog)
 356 {
 357    _mesa_reference_program(st->ctx,
 358                            (struct gl_program **) ptr,
 359                            (struct gl_program *) prog);
 360 }
 361
 362 /**
 363  * This defines mapping from Mesa VARYING_SLOTs to TGSI GENERIC slots.
 364  */
 365 static inline unsigned
 366 st_get_generic_varying_index(struct st_context *st, GLuint attr)
 367 {
 368    if (attr >= VARYING_SLOT_VAR0) {
 369       if (st->needs_texcoord_semantic)
 370          return attr - VARYING_SLOT_VAR0;
 371       else
 372          return 9 + (attr - VARYING_SLOT_VAR0);
 373    }
 374    if (attr == VARYING_SLOT_PNTC) {
 375       assert(!st->needs_texcoord_semantic);
 376       return 8;
 377    }
 378    if (attr >= VARYING_SLOT_TEX0 && attr <= VARYING_SLOT_TEX7) {
 379       assert(!st->needs_texcoord_semantic);
 380       return attr - VARYING_SLOT_TEX0;
 381    }
 382
 383    assert(0);
 384    return 0;
 385 }
 386
 387
 388 extern struct st_vp_variant *
 389 st_get_vp_variant(struct st_context *st,
 390                   struct st_vertex_program *stvp,
 391                   const struct st_vp_variant_key *key);
 392
 393
 394 extern struct st_fp_variant *
 395 st_get_fp_variant(struct st_context *st,
 396                   struct st_fragment_program *stfp,
 397                   const struct st_fp_variant_key *key);
 398
 399
 400 extern struct st_gp_variant *
 401 st_get_gp_variant(struct st_context *st,
 402                   struct st_geometry_program *stgp,
 403                   const struct st_gp_variant_key *key);
 404
 405 extern struct st_tcp_variant *
 406 st_get_tcp_variant(struct st_context *st,
 407                    struct st_tessctrl_program *stgp,
 408                    const struct st_tcp_variant_key *key);
 409
 410 extern struct st_tep_variant *
 411 st_get_tep_variant(struct st_context *st,
 412                    struct st_tesseval_program *stgp,
 413                    const struct st_tep_variant_key *key);
 414
 415 extern void
 416 st_release_vp_variants( struct st_context *st,
 417                         struct st_vertex_program *stvp );
 418
 419 extern void
 420 st_release_fp_variants( struct st_context *st,
 421                         struct st_fragment_program *stfp );
 422
 423 extern void
 424 st_release_gp_variants(struct st_context *st,
 425                        struct st_geometry_program *stgp);
 426
 427 extern void
 428 st_release_tcp_variants(struct st_context *st,
 429                         struct st_tessctrl_program *stgp);
 430
 431 extern void
 432 st_release_tep_variants(struct st_context *st,
 433                         struct st_tesseval_program *stgp);
 434
 435 extern void
 436 st_destroy_program_variants(struct st_context *st);
 437
 438 extern bool
 439 st_translate_vertex_program(struct st_context *st,
 440                             struct st_vertex_program *stvp);
 441
 442 extern bool
 443 st_translate_fragment_program(struct st_context *st,
 444                               struct st_fragment_program *stfp);
 445
 446 extern bool
 447 st_translate_geometry_program(struct st_context *st,
 448                               struct st_geometry_program *stgp);
 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