src/mesa/drivers/dri/i965/brw_context.h

   1 /*
   2  Copyright (C) Intel Corp.  2006.  All Rights Reserved.
   3  Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
   4  develop this 3D driver.
   5
   6  Permission is hereby granted, free of charge, to any person obtaining
   7  a 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, sublicense, 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
  16  portions of the Software.
  17
  18  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26  **********************************************************************/
  27  /*
  28   * Authors:
  29   *   Keith Whitwell <keith@tungstengraphics.com>
  30   */
  31
  32
  33 #ifndef BRWCONTEXT_INC
  34 #define BRWCONTEXT_INC
  35
  36 #include "intel_context.h"
  37 #include "brw_structs.h"
  38 #include "imports.h"
  39
  40
  41 /* Glossary:
  42  *
  43  * URB - uniform resource buffer.  A mid-sized buffer which is
  44  * partitioned between the fixed function units and used for passing
  45  * values (vertices, primitives, constants) between them.
  46  *
  47  * CURBE - constant URB entry.  An urb region (entry) used to hold
  48  * constant values which the fixed function units can be instructed to
  49  * preload into the GRF when spawining a thread.
  50  *
  51  * VUE - vertex URB entry.  An urb entry holding a vertex and usually
  52  * a vertex header.  The header contains control information and
  53  * things like primitive type, Begin/end flags and clip codes.
  54  *
  55  * PUE - primitive URB entry.  An urb entry produced by the setup (SF)
  56  * unit holding rasterization and interpolation parameters.
  57  *
  58  * GRF - general register file.  One of several register files
  59  * addressable by programmed threads.  The inputs (r0, payload, curbe,
  60  * urb) of the thread are preloaded to this area before the thread is
  61  * spawned.  The registers are individually 8 dwords wide and suitable
  62  * for general usage.  Registers holding thread input values are not
  63  * special and may be overwritten.
  64  *
  65  * MRF - message register file.  Threads communicate (and terminate)
  66  * by sending messages.  Message parameters are placed in contigous
  67  * MRF registers.  All program output is via these messages.  URB
  68  * entries are populated by sending a message to the shared URB
  69  * function containing the new data, together with a control word,
  70  * often an unmodified copy of R0.
  71  *
  72  * R0 - GRF register 0.  Typically holds control information used when
  73  * sending messages to other threads.
  74  *
  75  * EU or GEN4 EU: The name of the programmable subsystem of the
  76  * i965 hardware.  Threads are executed by the EU, the registers
  77  * described above are part of the EU architecture.
  78  *
  79  * Fixed function units:
  80  *
  81  * CS - Command streamer.  Notional first unit, little software
  82  * interaction.  Holds the URB entries used for constant data, ie the
  83  * CURBEs.
  84  *
  85  * VF/VS - Vertex Fetch / Vertex Shader.  The fixed function part of
  86  * this unit is responsible for pulling vertices out of vertex buffers
  87  * in vram and injecting them into the processing pipe as VUEs.  If
  88  * enabled, it first passes them to a VS thread which is a good place
  89  * for the driver to implement any active vertex shader.
  90  *
  91  * GS - Geometry Shader.  This corresponds to a new DX10 concept.  If
  92  * enabled, incoming strips etc are passed to GS threads in individual
  93  * line/triangle/point units.  The GS thread may perform arbitary
  94  * computation and emit whatever primtives with whatever vertices it
  95  * chooses.  This makes GS an excellent place to implement GL's
  96  * unfilled polygon modes, though of course it is capable of much
  97  * more.  Additionally, GS is used to translate away primitives not
  98  * handled by latter units, including Quads and Lineloops.
  99  *
 100  * CS - Clipper.  Mesa's clipping algorithms are imported to run on
 101  * this unit.  The fixed function part performs cliptesting against
 102  * the 6 fixed clipplanes and makes descisions on whether or not the
 103  * incoming primitive needs to be passed to a thread for clipping.
 104  * User clip planes are handled via cooperation with the VS thread.
 105  *
 106  * SF - Strips Fans or Setup: Triangles are prepared for
 107  * rasterization.  Interpolation coefficients are calculated.
 108  * Flatshading and two-side lighting usually performed here.
 109  *
 110  * WM - Windower.  Interpolation of vertex attributes performed here.
 111  * Fragment shader implemented here.  SIMD aspects of EU taken full
 112  * advantage of, as pixels are processed in blocks of 16.
 113  *
 114  * CC - Color Calculator.  No EU threads associated with this unit.
 115  * Handles blending and (presumably) depth and stencil testing.
 116  */
 117
 118 #define BRW_FALLBACK_TEXTURE             0x1
 119 #define BRW_MAX_CURBE                    (32*16)
 120
 121 struct brw_context;
 122
 123 #define BRW_NEW_URB_FENCE               0x1
 124 #define BRW_NEW_FRAGMENT_PROGRAM        0x2
 125 #define BRW_NEW_VERTEX_PROGRAM          0x4
 126 #define BRW_NEW_INPUT_DIMENSIONS        0x8
 127 #define BRW_NEW_CURBE_OFFSETS           0x10
 128 #define BRW_NEW_REDUCED_PRIMITIVE       0x20
 129 #define BRW_NEW_PRIMITIVE               0x40
 130 #define BRW_NEW_CONTEXT                 0x80
 131 #define BRW_NEW_WM_INPUT_DIMENSIONS     0x100
 132 #define BRW_NEW_INPUT_VARYING           0x200
 133 #define BRW_NEW_TNL_PROGRAM             0x400
 134 #define BRW_NEW_PSP                     0x800
 135 #define BRW_NEW_METAOPS                 0x1000
 136 #define BRW_NEW_FENCE                   0x2000
 137 #define BRW_NEW_LOCK                    0x4000
 138 /**
 139  * Used for any batch entry with a relocated pointer that will be used
 140  * by any 3D rendering.
 141  */
 142 #define BRW_NEW_BATCH                   0x8000
 143 /** brw->depth_region updated */
 144 #define BRW_NEW_DEPTH_BUFFER            0x10000
 145
 146 struct brw_state_flags {
 147    /** State update flags signalled by mesa internals */
 148    GLuint mesa;
 149    /** State update flags signalled by brw_state_cache.c searches */
 150    GLuint cache;
 151    /**
 152     * State update flags signalled as the result of brw_tracked_state updates
 153     */
 154    GLuint brw;
 155 };
 156
 157 struct brw_vertex_program {
 158    struct gl_vertex_program program;
 159    GLuint id;
 160    GLuint param_state;          /* flags indicating state tracked by params */
 161 };
 162
 163
 164
 165 struct brw_fragment_program {
 166    struct gl_fragment_program program;
 167    GLuint id;
 168    GLuint param_state;          /* flags indicating state tracked by params */
 169 };
 170
 171
 172
 173
 174 /* Data about a particular attempt to compile a program.  Note that
 175  * there can be many of these, each in a different GL state
 176  * corresponding to a different brw_wm_prog_key struct, with different
 177  * compiled programs:
 178  */
 179 struct brw_wm_prog_data {
 180    GLuint curb_read_length;
 181    GLuint urb_read_length;
 182
 183    GLuint first_curbe_grf;
 184    GLuint total_grf;
 185    GLuint total_scratch;
 186
 187    GLuint nr_params;
 188    GLboolean error;
 189
 190    /* Pointer to tracked values (only valid once
 191     * _mesa_load_state_parameters has been called at runtime).
 192     */
 193    const GLfloat *param[BRW_MAX_CURBE];
 194 };
 195
 196 struct brw_sf_prog_data {
 197    GLuint urb_read_length;
 198    GLuint total_grf;
 199
 200    /* Each vertex may have upto 12 attributes, 4 components each,
 201     * except WPOS which requires only 2.  (11*4 + 2) == 44 ==> 11
 202     * rows.
 203     *
 204     * Actually we use 4 for each, so call it 12 rows.
 205     */
 206    GLuint urb_entry_size;
 207 };
 208
 209 struct brw_clip_prog_data {
 210    GLuint curb_read_length;     /* user planes? */
 211    GLuint clip_mode;
 212    GLuint urb_read_length;
 213    GLuint total_grf;
 214 };
 215
 216 struct brw_gs_prog_data {
 217    GLuint urb_read_length;
 218    GLuint total_grf;
 219 };
 220
 221 struct brw_vs_prog_data {
 222    GLuint curb_read_length;
 223    GLuint urb_read_length;
 224    GLuint total_grf;
 225    GLuint outputs_written;
 226
 227    GLuint inputs_read;
 228
 229    /* Used for calculating urb partitions:
 230     */
 231    GLuint urb_entry_size;
 232 };
 233
 234
 235 /* Size == 0 if output either not written, or always [0,0,0,1]
 236  */
 237 struct brw_vs_ouput_sizes {
 238    GLubyte output_size[VERT_RESULT_MAX];
 239 };
 240
 241
 242 #define BRW_MAX_TEX_UNIT 8
 243 #define BRW_WM_MAX_SURF BRW_MAX_TEX_UNIT + 1
 244
 245 enum brw_cache_id {
 246    BRW_CC_VP,
 247    BRW_CC_UNIT,
 248    BRW_WM_PROG,
 249    BRW_SAMPLER_DEFAULT_COLOR,
 250    BRW_SAMPLER,
 251    BRW_WM_UNIT,
 252    BRW_SF_PROG,
 253    BRW_SF_VP,
 254    BRW_SF_UNIT,
 255    BRW_VS_UNIT,
 256    BRW_VS_PROG,
 257    BRW_GS_UNIT,
 258    BRW_GS_PROG,
 259    BRW_CLIP_VP,
 260    BRW_CLIP_UNIT,
 261    BRW_CLIP_PROG,
 262    BRW_SS_SURFACE,
 263    BRW_SS_SURF_BIND,
 264
 265    BRW_MAX_CACHE
 266 };
 267
 268 struct brw_cache_item {
 269    /**
 270     * Effectively part of the key, cache_id identifies what kind of state
 271     * buffer is involved, and also which brw->state.dirty.cache flag should
 272     * be set when this cache item is chosen.
 273     */
 274    enum brw_cache_id cache_id;
 275    /** 32-bit hash of the key data */
 276    GLuint hash;
 277    GLuint key_size;             /* for variable-sized keys */
 278    const void *key;
 279    dri_bo **reloc_bufs;
 280    GLuint nr_reloc_bufs;
 281
 282    dri_bo *bo;
 283    GLuint data_size;
 284
 285    struct brw_cache_item *next;
 286 };
 287
 288
 289
 290 struct brw_cache {
 291    struct brw_context *brw;
 292
 293    struct brw_cache_item **items;
 294    GLuint size, n_items;
 295
 296    GLuint key_size[BRW_MAX_CACHE];              /* for fixed-size keys */
 297    GLuint aux_size[BRW_MAX_CACHE];
 298    char *name[BRW_MAX_CACHE];
 299
 300    /* Record of the last BOs chosen for each cache_id.  Used to set
 301     * brw->state.dirty.cache when a new cache item is chosen.
 302     */
 303    dri_bo *last_bo[BRW_MAX_CACHE];
 304 };
 305
 306
 307
 308 struct brw_state_pointers {
 309    struct gl_colorbuffer_attrib *Color;
 310    struct gl_depthbuffer_attrib *Depth;
 311    struct gl_fog_attrib         *Fog;
 312    struct gl_hint_attrib        *Hint;
 313    struct gl_light_attrib       *Light;
 314    struct gl_line_attrib        *Line;
 315    struct gl_point_attrib       *Point;
 316    struct gl_polygon_attrib     *Polygon;
 317    GLuint                       *PolygonStipple;
 318    struct gl_scissor_attrib     *Scissor;
 319    struct gl_stencil_attrib     *Stencil;
 320    struct gl_texture_attrib     *Texture;
 321    struct gl_transform_attrib   *Transform;
 322    struct gl_viewport_attrib    *Viewport;
 323    struct gl_vertex_program_state *VertexProgram;
 324    struct gl_fragment_program_state *FragmentProgram;
 325 };
 326
 327 /* Considered adding a member to this struct to document which flags
 328  * an update might raise so that ordering of the state atoms can be
 329  * checked or derived at runtime.  Dropped the idea in favor of having
 330  * a debug mode where the state is monitored for flags which are
 331  * raised that have already been tested against.
 332  */
 333 struct brw_tracked_state {
 334    struct brw_state_flags dirty;
 335    void (*update)( struct brw_context *brw );
 336 };
 337
 338 /* Flags for brw->state.cache.
 339  */
 340 #define CACHE_NEW_CC_VP                  (1<<BRW_CC_VP)
 341 #define CACHE_NEW_CC_UNIT                (1<<BRW_CC_UNIT)
 342 #define CACHE_NEW_WM_PROG                (1<<BRW_WM_PROG)
 343 #define CACHE_NEW_SAMPLER_DEFAULT_COLOR  (1<<BRW_SAMPLER_DEFAULT_COLOR)
 344 #define CACHE_NEW_SAMPLER                (1<<BRW_SAMPLER)
 345 #define CACHE_NEW_WM_UNIT                (1<<BRW_WM_UNIT)
 346 #define CACHE_NEW_SF_PROG                (1<<BRW_SF_PROG)
 347 #define CACHE_NEW_SF_VP                  (1<<BRW_SF_VP)
 348 #define CACHE_NEW_SF_UNIT                (1<<BRW_SF_UNIT)
 349 #define CACHE_NEW_VS_UNIT                (1<<BRW_VS_UNIT)
 350 #define CACHE_NEW_VS_PROG                (1<<BRW_VS_PROG)
 351 #define CACHE_NEW_GS_UNIT                (1<<BRW_GS_UNIT)
 352 #define CACHE_NEW_GS_PROG                (1<<BRW_GS_PROG)
 353 #define CACHE_NEW_CLIP_VP                (1<<BRW_CLIP_VP)
 354 #define CACHE_NEW_CLIP_UNIT              (1<<BRW_CLIP_UNIT)
 355 #define CACHE_NEW_CLIP_PROG              (1<<BRW_CLIP_PROG)
 356 #define CACHE_NEW_SURFACE                (1<<BRW_SS_SURFACE)
 357 #define CACHE_NEW_SURF_BIND              (1<<BRW_SS_SURF_BIND)
 358
 359 struct brw_cached_batch_item {
 360    struct header *header;
 361    GLuint sz;
 362    struct brw_cached_batch_item *next;
 363 };
 364
 365
 366
 367 /* Protect against a future where VERT_ATTRIB_MAX > 32.  Wouldn't life
 368  * be easier if C allowed arrays of packed elements?
 369  */
 370 #define ATTRIB_BIT_DWORDS  ((VERT_ATTRIB_MAX+31)/32)
 371
 372 struct brw_vertex_element {
 373    const struct gl_client_array *glarray;
 374
 375    struct brw_vertex_element_state *vep;
 376
 377    GLuint index;
 378    GLuint element_size;
 379    GLuint count;
 380    GLuint vbo_rebase_offset;
 381 };
 382
 383
 384
 385 struct brw_vertex_info {
 386    GLuint varying;  /* varying:1[VERT_ATTRIB_MAX] */
 387    GLuint sizes[ATTRIB_BIT_DWORDS * 2]; /* sizes:2[VERT_ATTRIB_MAX] */
 388 };
 389
 390
 391
 392
 393 /* Cache for TNL programs.
 394  */
 395 struct brw_tnl_cache_item {
 396    GLuint hash;
 397    void *key;
 398    void *data;
 399    struct brw_tnl_cache_item *next;
 400 };
 401
 402 struct brw_tnl_cache {
 403    struct brw_tnl_cache_item **items;
 404    GLuint size, n_items;
 405 };
 406
 407
 408
 409 struct brw_context
 410 {
 411    struct intel_context intel;
 412    GLuint primitive;
 413
 414    GLboolean emit_state_always;
 415    GLboolean wrap;
 416    GLboolean tmp_fallback;
 417    GLboolean no_batch_wrap;
 418
 419    struct {
 420       struct brw_state_flags dirty;
 421       struct brw_tracked_state **atoms;
 422       GLuint nr_atoms;
 423
 424
 425       struct intel_region *draw_region;
 426       struct intel_region *depth_region;
 427    } state;
 428
 429    struct brw_state_pointers attribs;
 430    struct brw_cache cache;
 431    struct brw_cached_batch_item *cached_batch_items;
 432
 433    struct {
 434
 435       /* Arrays with buffer objects to copy non-bufferobj arrays into
 436        * for upload:
 437        */
 438       struct gl_client_array vbo_array[VERT_ATTRIB_MAX];
 439
 440       struct brw_vertex_element inputs[VERT_ATTRIB_MAX];
 441
 442 #define BRW_NR_UPLOAD_BUFS 17
 443 #define BRW_UPLOAD_INIT_SIZE (128*1024)
 444
 445       struct {
 446          struct gl_buffer_object *vbo[BRW_NR_UPLOAD_BUFS];
 447          GLuint buf;
 448          GLuint offset;
 449          GLuint size;
 450          GLuint wrap;
 451       } upload;
 452
 453       /* Summary of size and varying of active arrays, so we can check
 454        * for changes to this state:
 455        */
 456       struct brw_vertex_info info;
 457    } vb;
 458
 459    struct {
 460       /* Will be allocated on demand if needed.
 461        */
 462       struct brw_state_pointers attribs;
 463       struct gl_vertex_program *vp;
 464       struct gl_fragment_program *fp, *fp_tex;
 465
 466       struct gl_buffer_object *vbo;
 467
 468       struct intel_region *saved_draw_region;
 469       struct intel_region *saved_depth_region;
 470
 471       GLuint restore_draw_buffers[MAX_DRAW_BUFFERS];
 472       GLuint restore_num_draw_buffers;
 473
 474       struct gl_fragment_program *restore_fp;
 475
 476       GLboolean active;
 477    } metaops;
 478
 479    /* Track fixed function t&l in a vertex program:
 480     */
 481    struct gl_vertex_program *tnl_program;
 482    struct brw_tnl_cache tnl_program_cache;
 483
 484    /* Active vertex program:
 485     */
 486    const struct gl_vertex_program *vertex_program;
 487    const struct gl_fragment_program *fragment_program;
 488
 489
 490    /* For populating the gtt:
 491     */
 492    GLuint next_free_page;
 493
 494
 495    /* BRW_NEW_URB_ALLOCATIONS:
 496     */
 497    struct {
 498       GLuint vsize;             /* vertex size plus header in urb registers */
 499       GLuint csize;             /* constant buffer size in urb registers */
 500       GLuint sfsize;            /* setup data size in urb registers */
 501
 502       GLboolean constrained;
 503
 504       GLuint nr_vs_entries;
 505       GLuint nr_gs_entries;
 506       GLuint nr_clip_entries;
 507       GLuint nr_sf_entries;
 508       GLuint nr_cs_entries;
 509
 510 /*       GLuint vs_size; */
 511 /*       GLuint gs_size; */
 512 /*       GLuint clip_size; */
 513 /*       GLuint sf_size; */
 514 /*       GLuint cs_size; */
 515
 516       GLuint vs_start;
 517       GLuint gs_start;
 518       GLuint clip_start;
 519       GLuint sf_start;
 520       GLuint cs_start;
 521    } urb;
 522
 523
 524    /* BRW_NEW_CURBE_OFFSETS:
 525     */
 526    struct {
 527       GLuint wm_start;
 528       GLuint wm_size;
 529       GLuint clip_start;
 530       GLuint clip_size;
 531       GLuint vs_start;
 532       GLuint vs_size;
 533       GLuint total_size;
 534
 535       /* Dynamic tracker which changes to reflect the state referenced
 536        * by active fp and vp program parameters:
 537        */
 538       struct brw_tracked_state tracked_state;
 539
 540       dri_bo *curbe_bo;
 541
 542       GLfloat *last_buf;
 543       GLuint last_bufsz;
 544    } curbe;
 545
 546    struct {
 547       struct brw_vs_prog_data *prog_data;
 548
 549       dri_bo *prog_bo;
 550       dri_bo *state_bo;
 551    } vs;
 552
 553    struct {
 554       struct brw_gs_prog_data *prog_data;
 555
 556       GLboolean prog_active;
 557       dri_bo *prog_bo;
 558       dri_bo *state_bo;
 559    } gs;
 560
 561    struct {
 562       struct brw_clip_prog_data *prog_data;
 563
 564       dri_bo *prog_bo;
 565       dri_bo *state_bo;
 566       dri_bo *vp_bo;
 567    } clip;
 568
 569
 570    struct {
 571       struct brw_sf_prog_data *prog_data;
 572
 573       dri_bo *prog_bo;
 574       dri_bo *state_bo;
 575       dri_bo *vp_bo;
 576    } sf;
 577
 578    struct {
 579       struct brw_wm_prog_data *prog_data;
 580       struct brw_wm_compile *compile_data;
 581
 582       /* Input sizes, calculated from active vertex program:
 583        */
 584       GLuint input_size_masks[4];
 585
 586       /** Array of surface default colors (texture border color) */
 587       dri_bo *sdc_bo[BRW_MAX_TEX_UNIT];
 588
 589       GLuint render_surf;
 590       GLuint nr_surfaces;
 591
 592       GLuint max_threads;
 593       dri_bo *scratch_buffer;
 594
 595       GLuint sampler_count;
 596       dri_bo *sampler_bo;
 597
 598       /** Binding table of pointers to surf_bo entries */
 599       dri_bo *bind_bo;
 600       dri_bo *surf_bo[BRW_WM_MAX_SURF];
 601
 602       dri_bo *prog_bo;
 603       dri_bo *state_bo;
 604    } wm;
 605
 606
 607    struct {
 608       dri_bo *prog_bo;
 609       dri_bo *state_bo;
 610       dri_bo *vp_bo;
 611    } cc;
 612
 613
 614    /* Used to give every program string a unique id
 615     */
 616    GLuint program_id;
 617 };
 618
 619
 620 #define BRW_PACKCOLOR8888(r,g,b,a)  ((r<<24) | (g<<16) | (b<<8) | a)
 621
 622
 623
 624 /*======================================================================
 625  * brw_vtbl.c
 626  */
 627 void brwInitVtbl( struct brw_context *brw );
 628 void brw_do_flush( struct brw_context *brw,
 629                    GLuint flags );
 630
 631 /*======================================================================
 632  * brw_context.c
 633  */
 634 GLboolean brwCreateContext( const __GLcontextModes *mesaVis,
 635                             __DRIcontextPrivate *driContextPriv,
 636                             void *sharedContextPrivate);
 637
 638
 639
 640 /*======================================================================
 641  * brw_state.c
 642  */
 643 void brw_validate_state( struct brw_context *brw );
 644 void brw_init_state( struct brw_context *brw );
 645 void brw_destroy_state( struct brw_context *brw );
 646
 647
 648 /*======================================================================
 649  * brw_state_dump.c
 650  */
 651 void brw_debug_batch(struct intel_context *intel);
 652
 653 /*======================================================================
 654  * brw_tex.c
 655  */
 656 void brwUpdateTextureState( struct intel_context *intel );
 657 void brw_FrameBufferTexInit( struct brw_context *brw );
 658 void brw_FrameBufferTexDestroy( struct brw_context *brw );
 659 void brw_validate_textures( struct brw_context *brw );
 660
 661 /*======================================================================
 662  * brw_metaops.c
 663  */
 664
 665 void brw_init_metaops( struct brw_context *brw );
 666 void brw_destroy_metaops( struct brw_context *brw );
 667
 668
 669 /*======================================================================
 670  * brw_program.c
 671  */
 672 void brwInitFragProgFuncs( struct dd_function_table *functions );
 673
 674
 675 /* brw_urb.c
 676  */
 677 void brw_upload_urb_fence(struct brw_context *brw);
 678
 679 void brw_upload_constant_buffer_state(struct brw_context *brw);
 680
 681
 682 /*======================================================================
 683  * Inline conversion functions.  These are better-typed than the
 684  * macros used previously:
 685  */
 686 static inline struct brw_context *
 687 brw_context( GLcontext *ctx )
 688 {
 689    return (struct brw_context *)ctx;
 690 }
 691
 692 #endif
 693