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 /** Key shared by all shaders except VP, FP */
 175 struct st_basic_variant_key
 176 {
 177    struct st_context *st;          /**< variants are per-context */
 178 };
 179
 180
 181 /**
 182  * Geometry program variant.
 183  */
 184 struct st_basic_variant
 185 {
 186    /* Parameters which generated this variant. */
 187    struct st_basic_variant_key key;
 188
 189    void *driver_shader;
 190
 191    struct st_basic_variant *next;
 192 };
 193
 194
 195 /**
 196  * Derived from Mesa gl_geometry_program:
 197  */
 198 struct st_geometry_program
 199 {
 200    struct gl_geometry_program Base;  /**< The Mesa geometry program */
 201    struct pipe_shader_state tgsi;
 202    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 203
 204    struct st_basic_variant *variants;
 205 };
 206
 207
 208 /**
 209  * Derived from Mesa gl_tess_ctrl_program:
 210  */
 211 struct st_tessctrl_program
 212 {
 213    struct gl_tess_ctrl_program Base;  /**< The Mesa tess ctrl program */
 214    struct pipe_shader_state tgsi;
 215    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 216
 217    struct st_basic_variant *variants;
 218 };
 219
 220
 221 /**
 222  * Derived from Mesa gl_tess_eval_program:
 223  */
 224 struct st_tesseval_program
 225 {
 226    struct gl_tess_eval_program Base;  /**< The Mesa tess eval program */
 227    struct pipe_shader_state tgsi;
 228    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 229
 230    struct st_basic_variant *variants;
 231 };
 232
 233
 234 /**
 235  * Derived from Mesa gl_compute_program:
 236  */
 237 struct st_compute_program
 238 {
 239    struct gl_compute_program Base;  /**< The Mesa compute program */
 240    struct pipe_compute_state tgsi;
 241    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 242
 243    struct st_basic_variant *variants;
 244 };
 245
 246
 247 static inline struct st_fragment_program *
 248 st_fragment_program( struct gl_fragment_program *fp )
 249 {
 250    return (struct st_fragment_program *)fp;
 251 }
 252
 253
 254 static inline struct st_vertex_program *
 255 st_vertex_program( struct gl_vertex_program *vp )
 256 {
 257    return (struct st_vertex_program *)vp;
 258 }
 259
 260 static inline struct st_geometry_program *
 261 st_geometry_program( struct gl_geometry_program *gp )
 262 {
 263    return (struct st_geometry_program *)gp;
 264 }
 265
 266 static inline struct st_tessctrl_program *
 267 st_tessctrl_program( struct gl_tess_ctrl_program *tcp )
 268 {
 269    return (struct st_tessctrl_program *)tcp;
 270 }
 271
 272 static inline struct st_tesseval_program *
 273 st_tesseval_program( struct gl_tess_eval_program *tep )
 274 {
 275    return (struct st_tesseval_program *)tep;
 276 }
 277
 278 static inline struct st_compute_program *
 279 st_compute_program( struct gl_compute_program *cp )
 280 {
 281    return (struct st_compute_program *)cp;
 282 }
 283
 284 static inline void
 285 st_reference_vertprog(struct st_context *st,
 286                       struct st_vertex_program **ptr,
 287                       struct st_vertex_program *prog)
 288 {
 289    _mesa_reference_program(st->ctx,
 290                            (struct gl_program **) ptr,
 291                            (struct gl_program *) prog);
 292 }
 293
 294 static inline void
 295 st_reference_geomprog(struct st_context *st,
 296                       struct st_geometry_program **ptr,
 297                       struct st_geometry_program *prog)
 298 {
 299    _mesa_reference_program(st->ctx,
 300                            (struct gl_program **) ptr,
 301                            (struct gl_program *) prog);
 302 }
 303
 304 static inline void
 305 st_reference_fragprog(struct st_context *st,
 306                       struct st_fragment_program **ptr,
 307                       struct st_fragment_program *prog)
 308 {
 309    _mesa_reference_program(st->ctx,
 310                            (struct gl_program **) ptr,
 311                            (struct gl_program *) prog);
 312 }
 313
 314 static inline void
 315 st_reference_tesscprog(struct st_context *st,
 316                        struct st_tessctrl_program **ptr,
 317                        struct st_tessctrl_program *prog)
 318 {
 319    _mesa_reference_program(st->ctx,
 320                            (struct gl_program **) ptr,
 321                            (struct gl_program *) prog);
 322 }
 323
 324 static inline void
 325 st_reference_tesseprog(struct st_context *st,
 326                        struct st_tesseval_program **ptr,
 327                        struct st_tesseval_program *prog)
 328 {
 329    _mesa_reference_program(st->ctx,
 330                            (struct gl_program **) ptr,
 331                            (struct gl_program *) prog);
 332 }
 333
 334 static inline void
 335 st_reference_compprog(struct st_context *st,
 336                       struct st_compute_program **ptr,
 337                       struct st_compute_program *prog)
 338 {
 339    _mesa_reference_program(st->ctx,
 340                            (struct gl_program **) ptr,
 341                            (struct gl_program *) prog);
 342 }
 343
 344 /**
 345  * This defines mapping from Mesa VARYING_SLOTs to TGSI GENERIC slots.
 346  */
 347 static inline unsigned
 348 st_get_generic_varying_index(struct st_context *st, GLuint attr)
 349 {
 350    if (attr >= VARYING_SLOT_VAR0) {
 351       if (st->needs_texcoord_semantic)
 352          return attr - VARYING_SLOT_VAR0;
 353       else
 354          return 9 + (attr - VARYING_SLOT_VAR0);
 355    }
 356    if (attr == VARYING_SLOT_PNTC) {
 357       assert(!st->needs_texcoord_semantic);
 358       return 8;
 359    }
 360    if (attr >= VARYING_SLOT_TEX0 && attr <= VARYING_SLOT_TEX7) {
 361       assert(!st->needs_texcoord_semantic);
 362       return attr - VARYING_SLOT_TEX0;
 363    }
 364
 365    assert(0);
 366    return 0;
 367 }
 368
 369
 370 extern struct st_vp_variant *
 371 st_get_vp_variant(struct st_context *st,
 372                   struct st_vertex_program *stvp,
 373                   const struct st_vp_variant_key *key);
 374
 375
 376 extern struct st_fp_variant *
 377 st_get_fp_variant(struct st_context *st,
 378                   struct st_fragment_program *stfp,
 379                   const struct st_fp_variant_key *key);
 380
 381 extern struct st_basic_variant *
 382 st_get_cp_variant(struct st_context *st,
 383                   struct pipe_compute_state *tgsi,
 384                   struct st_basic_variant **variants);
 385
 386 extern struct st_basic_variant *
 387 st_get_basic_variant(struct st_context *st,
 388                      unsigned pipe_shader,
 389                      struct pipe_shader_state *tgsi,
 390                      struct st_basic_variant **variants);
 391
 392 extern void
 393 st_release_vp_variants( struct st_context *st,
 394                         struct st_vertex_program *stvp );
 395
 396 extern void
 397 st_release_fp_variants( struct st_context *st,
 398                         struct st_fragment_program *stfp );
 399
 400 extern void
 401 st_release_cp_variants(struct st_context *st,
 402                         struct st_compute_program *stcp);
 403
 404 extern void
 405 st_release_basic_variants(struct st_context *st, GLenum target,
 406                           struct st_basic_variant **variants,
 407                           struct pipe_shader_state *tgsi);
 408
 409 extern void
 410 st_destroy_program_variants(struct st_context *st);
 411
 412 extern bool
 413 st_translate_vertex_program(struct st_context *st,
 414                             struct st_vertex_program *stvp);
 415
 416 extern bool
 417 st_translate_fragment_program(struct st_context *st,
 418                               struct st_fragment_program *stfp);
 419
 420 extern bool
 421 st_translate_geometry_program(struct st_context *st,
 422                               struct st_geometry_program *stgp);
 423
 424 extern bool
 425 st_translate_tessctrl_program(struct st_context *st,
 426                               struct st_tessctrl_program *sttcp);
 427
 428 extern bool
 429 st_translate_tesseval_program(struct st_context *st,
 430                               struct st_tesseval_program *sttep);
 431
 432 extern bool
 433 st_translate_compute_program(struct st_context *st,
 434                              struct st_compute_program *stcp);
 435
 436 extern void
 437 st_print_current_vertex_program(void);
 438
 439 extern void
 440 st_precompile_shader_variant(struct st_context *st,
 441                              struct gl_program *prog);
 442
 443 #ifdef __cplusplus
 444 }
 445 #endif
 446
 447 #endif