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    GLuint drawpixels_z:1;         /**< glDrawPixels(GL_DEPTH) */
  63    GLuint drawpixels_stencil:1;   /**< glDrawPixels(GL_STENCIL) */
  64
  65    /** for ARB_color_buffer_float */
  66    GLuint clamp_color:1;
  67
  68    /** for ARB_sample_shading */
  69    GLuint persample_shading:1;
  70 };
  71
  72
  73 /**
  74  * Variant of a fragment program.
  75  */
  76 struct st_fp_variant
  77 {
  78    /** Parameters which generated this version of fragment program */
  79    struct st_fp_variant_key key;
  80
  81    struct pipe_shader_state tgsi;
  82
  83    /** Driver's compiled shader */
  84    void *driver_shader;
  85
  86    /** For glBitmap variants */
  87    struct gl_program_parameter_list *parameters;
  88    uint bitmap_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 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 glsl_to_tgsi_visitor* glsl_to_tgsi;
 157
 158    /** maps a Mesa VERT_ATTRIB_x to a packed TGSI input index */
 159    /** maps a TGSI input index back to a Mesa VERT_ATTRIB_x */
 160    GLuint index_to_input[PIPE_MAX_SHADER_INPUTS];
 161    GLuint num_inputs;
 162
 163    /** Maps VARYING_SLOT_x to slot */
 164    GLuint result_to_output[VARYING_SLOT_MAX];
 165
 166    /** List of translated variants of this vertex program.
 167     */
 168    struct st_vp_variant *variants;
 169 };
 170
 171
 172
 173 /** Geometry program variant key */
 174 struct st_gp_variant_key
 175 {
 176    struct st_context *st;          /**< variants are per-context */
 177    /* no other fields yet */
 178 };
 179
 180
 181 /**
 182  * Geometry program variant.
 183  */
 184 struct st_gp_variant
 185 {
 186    /* Parameters which generated this variant. */
 187    struct st_gp_variant_key key;
 188
 189    void *driver_shader;
 190
 191    struct st_gp_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 glsl_to_tgsi_visitor* glsl_to_tgsi;
 202
 203    struct st_gp_variant *variants;
 204 };
 205
 206
 207
 208 /** Tessellation control program variant key */
 209 struct st_tcp_variant_key
 210 {
 211    struct st_context *st;          /**< variants are per-context */
 212    /* no other fields yet */
 213 };
 214
 215
 216 /**
 217  * Tessellation control program variant.
 218  */
 219 struct st_tcp_variant
 220 {
 221    /* Parameters which generated this variant. */
 222    struct st_tcp_variant_key key;
 223
 224    void *driver_shader;
 225
 226    struct st_tcp_variant *next;
 227 };
 228
 229
 230 /**
 231  * Derived from Mesa gl_tess_ctrl_program:
 232  */
 233 struct st_tessctrl_program
 234 {
 235    struct gl_tess_ctrl_program Base;  /**< The Mesa tess ctrl program */
 236    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 237
 238    struct st_tcp_variant *variants;
 239 };
 240
 241
 242
 243 /** Tessellation evaluation program variant key */
 244 struct st_tep_variant_key
 245 {
 246    struct st_context *st;          /**< variants are per-context */
 247    /* no other fields yet */
 248 };
 249
 250
 251 /**
 252  * Tessellation evaluation program variant.
 253  */
 254 struct st_tep_variant
 255 {
 256    /* Parameters which generated this variant. */
 257    struct st_tep_variant_key key;
 258
 259    void *driver_shader;
 260
 261    struct st_tep_variant *next;
 262 };
 263
 264
 265 /**
 266  * Derived from Mesa gl_tess_eval_program:
 267  */
 268 struct st_tesseval_program
 269 {
 270    struct gl_tess_eval_program Base;  /**< The Mesa tess eval program */
 271    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 272
 273    struct st_tep_variant *variants;
 274 };
 275
 276
 277
 278 static inline struct st_fragment_program *
 279 st_fragment_program( struct gl_fragment_program *fp )
 280 {
 281    return (struct st_fragment_program *)fp;
 282 }
 283
 284
 285 static inline struct st_vertex_program *
 286 st_vertex_program( struct gl_vertex_program *vp )
 287 {
 288    return (struct st_vertex_program *)vp;
 289 }
 290
 291 static inline struct st_geometry_program *
 292 st_geometry_program( struct gl_geometry_program *gp )
 293 {
 294    return (struct st_geometry_program *)gp;
 295 }
 296
 297 static inline struct st_tessctrl_program *
 298 st_tessctrl_program( struct gl_tess_ctrl_program *tcp )
 299 {
 300    return (struct st_tessctrl_program *)tcp;
 301 }
 302
 303 static inline struct st_tesseval_program *
 304 st_tesseval_program( struct gl_tess_eval_program *tep )
 305 {
 306    return (struct st_tesseval_program *)tep;
 307 }
 308
 309 static inline void
 310 st_reference_vertprog(struct st_context *st,
 311                       struct st_vertex_program **ptr,
 312                       struct st_vertex_program *prog)
 313 {
 314    _mesa_reference_program(st->ctx,
 315                            (struct gl_program **) ptr,
 316                            (struct gl_program *) prog);
 317 }
 318
 319 static inline void
 320 st_reference_geomprog(struct st_context *st,
 321                       struct st_geometry_program **ptr,
 322                       struct st_geometry_program *prog)
 323 {
 324    _mesa_reference_program(st->ctx,
 325                            (struct gl_program **) ptr,
 326                            (struct gl_program *) prog);
 327 }
 328
 329 static inline void
 330 st_reference_fragprog(struct st_context *st,
 331                       struct st_fragment_program **ptr,
 332                       struct st_fragment_program *prog)
 333 {
 334    _mesa_reference_program(st->ctx,
 335                            (struct gl_program **) ptr,
 336                            (struct gl_program *) prog);
 337 }
 338
 339 static inline void
 340 st_reference_tesscprog(struct st_context *st,
 341                        struct st_tessctrl_program **ptr,
 342                        struct st_tessctrl_program *prog)
 343 {
 344    _mesa_reference_program(st->ctx,
 345                            (struct gl_program **) ptr,
 346                            (struct gl_program *) prog);
 347 }
 348
 349 static inline void
 350 st_reference_tesseprog(struct st_context *st,
 351                        struct st_tesseval_program **ptr,
 352                        struct st_tesseval_program *prog)
 353 {
 354    _mesa_reference_program(st->ctx,
 355                            (struct gl_program **) ptr,
 356                            (struct gl_program *) prog);
 357 }
 358
 359 /**
 360  * This defines mapping from Mesa VARYING_SLOTs to TGSI GENERIC slots.
 361  */
 362 static inline unsigned
 363 st_get_generic_varying_index(struct st_context *st, GLuint attr)
 364 {
 365    if (attr >= VARYING_SLOT_VAR0) {
 366       if (st->needs_texcoord_semantic)
 367          return attr - VARYING_SLOT_VAR0;
 368       else
 369          return 9 + (attr - VARYING_SLOT_VAR0);
 370    }
 371    if (attr == VARYING_SLOT_PNTC) {
 372       assert(!st->needs_texcoord_semantic);
 373       return 8;
 374    }
 375    if (attr >= VARYING_SLOT_TEX0 && attr <= VARYING_SLOT_TEX7) {
 376       assert(!st->needs_texcoord_semantic);
 377       return attr - VARYING_SLOT_TEX0;
 378    }
 379
 380    assert(0);
 381    return 0;
 382 }
 383
 384
 385 extern struct st_vp_variant *
 386 st_get_vp_variant(struct st_context *st,
 387                   struct st_vertex_program *stvp,
 388                   const struct st_vp_variant_key *key);
 389
 390
 391 extern struct st_fp_variant *
 392 st_get_fp_variant(struct st_context *st,
 393                   struct st_fragment_program *stfp,
 394                   const struct st_fp_variant_key *key);
 395
 396
 397 extern struct st_gp_variant *
 398 st_get_gp_variant(struct st_context *st,
 399                   struct st_geometry_program *stgp,
 400                   const struct st_gp_variant_key *key);
 401
 402 extern struct st_tcp_variant *
 403 st_get_tcp_variant(struct st_context *st,
 404                    struct st_tessctrl_program *stgp,
 405                    const struct st_tcp_variant_key *key);
 406
 407 extern struct st_tep_variant *
 408 st_get_tep_variant(struct st_context *st,
 409                    struct st_tesseval_program *stgp,
 410                    const struct st_tep_variant_key *key);
 411
 412 extern void
 413 st_release_vp_variants( struct st_context *st,
 414                         struct st_vertex_program *stvp );
 415
 416 extern void
 417 st_release_fp_variants( struct st_context *st,
 418                         struct st_fragment_program *stfp );
 419
 420 extern void
 421 st_release_gp_variants(struct st_context *st,
 422                        struct st_geometry_program *stgp);
 423
 424 extern void
 425 st_release_tcp_variants(struct st_context *st,
 426                         struct st_tessctrl_program *stgp);
 427
 428 extern void
 429 st_release_tep_variants(struct st_context *st,
 430                         struct st_tesseval_program *stgp);
 431
 432 extern void
 433 st_destroy_program_variants(struct st_context *st);
 434
 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