src/mesa/drivers/dri/i915/intel_tris.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   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 TUNGSTEN GRAPHICS 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 /** @file intel_tris.c
  29  *
  30  * This file contains functions for managing the vertex buffer and emitting
  31  * primitives into it.
  32  */
  33
  34 #include "main/glheader.h"
  35 #include "main/context.h"
  36 #include "main/macros.h"
  37 #include "main/enums.h"
  38 #include "main/texobj.h"
  39 #include "main/state.h"
  40 #include "main/dd.h"
  41
  42 #include "swrast/swrast.h"
  43 #include "swrast_setup/swrast_setup.h"
  44 #include "tnl/t_context.h"
  45 #include "tnl/t_pipeline.h"
  46 #include "tnl/t_vertex.h"
  47
  48 #include "intel_screen.h"
  49 #include "intel_context.h"
  50 #include "intel_tris.h"
  51 #include "intel_batchbuffer.h"
  52 #include "intel_buffers.h"
  53 #include "intel_reg.h"
  54 #include "intel_span.h"
  55 #include "i830_context.h"
  56 #include "i830_reg.h"
  57
  58 static void intelRenderPrimitive(struct gl_context * ctx, GLenum prim);
  59 static void intelRasterPrimitive(struct gl_context * ctx, GLenum rprim,
  60                                  GLuint hwprim);
  61
  62 static void
  63 intel_flush_inline_primitive(struct intel_context *intel)
  64 {
  65    GLuint used = intel->batch.used - intel->prim.start_ptr;
  66
  67    assert(intel->prim.primitive != ~0);
  68
  69 /*    printf("/\n"); */
  70
  71    if (used < 2)
  72       goto do_discard;
  73
  74    intel->batch.map[intel->prim.start_ptr] =
  75       _3DPRIMITIVE | intel->prim.primitive | (used - 2);
  76
  77    goto finished;
  78
  79  do_discard:
  80    intel->batch.used = intel->prim.start_ptr;
  81
  82  finished:
  83    intel->prim.primitive = ~0;
  84    intel->prim.start_ptr = 0;
  85    intel->prim.flush = 0;
  86 }
  87
  88 static void intel_start_inline(struct intel_context *intel, uint32_t prim)
  89 {
  90    BATCH_LOCALS;
  91
  92    intel->vtbl.emit_state(intel);
  93
  94    intel->no_batch_wrap = GL_TRUE;
  95
  96    /*printf("%s *", __progname);*/
  97
  98    /* Emit a slot which will be filled with the inline primitive
  99     * command later.
 100     */
 101    BEGIN_BATCH(1);
 102
 103    intel->prim.start_ptr = intel->batch.used;
 104    intel->prim.primitive = prim;
 105    intel->prim.flush = intel_flush_inline_primitive;
 106
 107    OUT_BATCH(0);
 108    ADVANCE_BATCH();
 109
 110    intel->no_batch_wrap = GL_FALSE;
 111 /*    printf(">"); */
 112 }
 113
 114 static void intel_wrap_inline(struct intel_context *intel)
 115 {
 116    GLuint prim = intel->prim.primitive;
 117
 118    intel_flush_inline_primitive(intel);
 119    intel_batchbuffer_flush(intel);
 120    intel_start_inline(intel, prim);  /* ??? */
 121 }
 122
 123 static GLuint *intel_extend_inline(struct intel_context *intel, GLuint dwords)
 124 {
 125    GLuint *ptr;
 126
 127    assert(intel->prim.flush == intel_flush_inline_primitive);
 128
 129    if (intel_batchbuffer_space(intel) < dwords * sizeof(GLuint))
 130       intel_wrap_inline(intel);
 131
 132 /*    printf("."); */
 133
 134    intel->vtbl.assert_not_dirty(intel);
 135
 136    ptr = intel->batch.map + intel->batch.used;
 137    intel->batch.used += dwords;
 138
 139    return ptr;
 140 }
 141
 142 /** Sets the primitive type for a primitive sequence, flushing as needed. */
 143 void intel_set_prim(struct intel_context *intel, uint32_t prim)
 144 {
 145    /* if we have no VBOs */
 146
 147    if (intel->intelScreen->no_vbo) {
 148       intel_start_inline(intel, prim);
 149       return;
 150    }
 151    if (prim != intel->prim.primitive) {
 152       INTEL_FIREVERTICES(intel);
 153       intel->prim.primitive = prim;
 154    }
 155 }
 156
 157 /** Returns mapped VB space for the given number of vertices */
 158 uint32_t *intel_get_prim_space(struct intel_context *intel, unsigned int count)
 159 {
 160    uint32_t *addr;
 161
 162    if (intel->intelScreen->no_vbo) {
 163       return intel_extend_inline(intel, count * intel->vertex_size);
 164    }
 165
 166    /* Check for space in the existing VB */
 167    if (intel->prim.vb_bo == NULL ||
 168        (intel->prim.current_offset +
 169         count * intel->vertex_size * 4) > INTEL_VB_SIZE ||
 170        (intel->prim.count + count) >= (1 << 16)) {
 171       /* Flush existing prim if any */
 172       INTEL_FIREVERTICES(intel);
 173
 174       intel_finish_vb(intel);
 175
 176       /* Start a new VB */
 177       if (intel->prim.vb == NULL)
 178          intel->prim.vb = malloc(INTEL_VB_SIZE);
 179       intel->prim.vb_bo = drm_intel_bo_alloc(intel->bufmgr, "vb",
 180                                              INTEL_VB_SIZE, 4);
 181       intel->prim.start_offset = 0;
 182       intel->prim.current_offset = 0;
 183    }
 184
 185    intel->prim.flush = intel_flush_prim;
 186
 187    addr = (uint32_t *)(intel->prim.vb + intel->prim.current_offset);
 188    intel->prim.current_offset += intel->vertex_size * 4 * count;
 189    intel->prim.count += count;
 190
 191    return addr;
 192 }
 193
 194 /** Dispatches the accumulated primitive to the batchbuffer. */
 195 void intel_flush_prim(struct intel_context *intel)
 196 {
 197    drm_intel_bo *aper_array[2];
 198    drm_intel_bo *vb_bo;
 199    unsigned int offset, count;
 200    BATCH_LOCALS;
 201
 202    /* Must be called after an intel_start_prim. */
 203    assert(intel->prim.primitive != ~0);
 204
 205    if (intel->prim.count == 0)
 206       return;
 207
 208    /* Clear the current prims out of the context state so that a batch flush
 209     * flush triggered by emit_state doesn't loop back to flush_prim again.
 210     */
 211    vb_bo = intel->prim.vb_bo;
 212    drm_intel_bo_reference(vb_bo);
 213    count = intel->prim.count;
 214    intel->prim.count = 0;
 215    offset = intel->prim.start_offset;
 216    intel->prim.start_offset = intel->prim.current_offset;
 217    if (intel->gen < 3)
 218       intel->prim.start_offset = ALIGN(intel->prim.start_offset, 128);
 219    intel->prim.flush = NULL;
 220
 221    intel->vtbl.emit_state(intel);
 222
 223    aper_array[0] = intel->batch.bo;
 224    aper_array[1] = vb_bo;
 225    if (dri_bufmgr_check_aperture_space(aper_array, 2)) {
 226       intel_batchbuffer_flush(intel);
 227       intel->vtbl.emit_state(intel);
 228    }
 229
 230    /* Ensure that we don't start a new batch for the following emit, which
 231     * depends on the state just emitted. emit_state should be making sure we
 232     * have the space for this.
 233     */
 234    intel->no_batch_wrap = GL_TRUE;
 235
 236 #if 0
 237    printf("emitting %d..%d=%d vertices size %d\n", offset,
 238           intel->prim.current_offset, count,
 239           intel->vertex_size * 4);
 240 #endif
 241
 242    if (intel->gen >= 3) {
 243       BEGIN_BATCH(5);
 244       OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 |
 245                 I1_LOAD_S(0) | I1_LOAD_S(1) | 1);
 246       assert((offset & ~S0_VB_OFFSET_MASK) == 0);
 247       OUT_RELOC(vb_bo, I915_GEM_DOMAIN_VERTEX, 0, offset);
 248       OUT_BATCH((intel->vertex_size << S1_VERTEX_WIDTH_SHIFT) |
 249                 (intel->vertex_size << S1_VERTEX_PITCH_SHIFT));
 250
 251       OUT_BATCH(_3DPRIMITIVE |
 252                 PRIM_INDIRECT |
 253                 PRIM_INDIRECT_SEQUENTIAL |
 254                 intel->prim.primitive |
 255                 count);
 256       OUT_BATCH(0); /* Beginning vertex index */
 257       ADVANCE_BATCH();
 258    } else {
 259       struct i830_context *i830 = i830_context(&intel->ctx);
 260
 261       BEGIN_BATCH(5);
 262       OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 |
 263                 I1_LOAD_S(0) | I1_LOAD_S(2) | 1);
 264       /* S0 */
 265       assert((offset & ~S0_VB_OFFSET_MASK_830) == 0);
 266       OUT_RELOC(vb_bo, I915_GEM_DOMAIN_VERTEX, 0,
 267                 offset | (intel->vertex_size << S0_VB_PITCH_SHIFT_830) |
 268                 S0_VB_ENABLE_830);
 269       /* S2
 270        * This is somewhat unfortunate -- VB width is tied up with
 271        * vertex format data that we've already uploaded through
 272        * _3DSTATE_VFT[01]_CMD.  We may want to replace emits of VFT state with
 273        * STATE_IMMEDIATE_1 like this to avoid duplication.
 274        */
 275       OUT_BATCH((i830->state.Ctx[I830_CTXREG_VF] & VFT0_TEX_COUNT_MASK) >>
 276                 VFT0_TEX_COUNT_SHIFT << S2_TEX_COUNT_SHIFT_830 |
 277                 (i830->state.Ctx[I830_CTXREG_VF2] << 16) |
 278                 intel->vertex_size << S2_VERTEX_0_WIDTH_SHIFT_830);
 279
 280       OUT_BATCH(_3DPRIMITIVE |
 281                 PRIM_INDIRECT |
 282                 PRIM_INDIRECT_SEQUENTIAL |
 283                 intel->prim.primitive |
 284                 count);
 285       OUT_BATCH(0); /* Beginning vertex index */
 286       ADVANCE_BATCH();
 287    }
 288
 289    intel->no_batch_wrap = GL_FALSE;
 290
 291    drm_intel_bo_unreference(vb_bo);
 292 }
 293
 294 /**
 295  * Uploads the locally-accumulated VB into the buffer object.
 296  *
 297  * This avoids us thrashing the cachelines in and out as the buffer gets
 298  * filled, dispatched, then reused as the hardware completes rendering from it,
 299  * and also lets us clflush less if we dispatch with a partially-filled VB.
 300  *
 301  * This is called normally from get_space when we're finishing a BO, but also
 302  * at batch flush time so that we don't try accessing the contents of a
 303  * just-dispatched buffer.
 304  */
 305 void intel_finish_vb(struct intel_context *intel)
 306 {
 307    if (intel->prim.vb_bo == NULL)
 308       return;
 309
 310    drm_intel_bo_subdata(intel->prim.vb_bo, 0, intel->prim.start_offset,
 311                         intel->prim.vb);
 312    drm_intel_bo_unreference(intel->prim.vb_bo);
 313    intel->prim.vb_bo = NULL;
 314 }
 315
 316 /***********************************************************************
 317  *                    Emit primitives as inline vertices               *
 318  ***********************************************************************/
 319
 320 #ifdef __i386__
 321 #define COPY_DWORDS( j, vb, vertsize, v )                       \
 322 do {                                                            \
 323    int __tmp;                                                   \
 324    __asm__ __volatile__( "rep ; movsl"                          \
 325                          : "=%c" (j), "=D" (vb), "=S" (__tmp)   \
 326                          : "0" (vertsize),                      \
 327                          "D" ((long)vb),                        \
 328                          "S" ((long)v) );                       \
 329 } while (0)
 330 #else
 331 #define COPY_DWORDS( j, vb, vertsize, v )       \
 332 do {                                            \
 333    for ( j = 0 ; j < vertsize ; j++ ) {         \
 334       vb[j] = ((GLuint *)v)[j];                 \
 335    }                                            \
 336    vb += vertsize;                              \
 337 } while (0)
 338 #endif
 339
 340 static void
 341 intel_draw_quad(struct intel_context *intel,
 342                 intelVertexPtr v0,
 343                 intelVertexPtr v1, intelVertexPtr v2, intelVertexPtr v3)
 344 {
 345    GLuint vertsize = intel->vertex_size;
 346    GLuint *vb = intel_get_prim_space(intel, 6);
 347    int j;
 348
 349    COPY_DWORDS(j, vb, vertsize, v0);
 350    COPY_DWORDS(j, vb, vertsize, v1);
 351
 352    /* If smooth shading, draw like a trifan which gives better
 353     * rasterization.  Otherwise draw as two triangles with provoking
 354     * vertex in third position as required for flat shading.
 355     */
 356    if (intel->ctx.Light.ShadeModel == GL_FLAT) {
 357       COPY_DWORDS(j, vb, vertsize, v3);
 358       COPY_DWORDS(j, vb, vertsize, v1);
 359    }
 360    else {
 361       COPY_DWORDS(j, vb, vertsize, v2);
 362       COPY_DWORDS(j, vb, vertsize, v0);
 363    }
 364
 365    COPY_DWORDS(j, vb, vertsize, v2);
 366    COPY_DWORDS(j, vb, vertsize, v3);
 367 }
 368
 369 static void
 370 intel_draw_triangle(struct intel_context *intel,
 371                     intelVertexPtr v0, intelVertexPtr v1, intelVertexPtr v2)
 372 {
 373    GLuint vertsize = intel->vertex_size;
 374    GLuint *vb = intel_get_prim_space(intel, 3);
 375    int j;
 376
 377    COPY_DWORDS(j, vb, vertsize, v0);
 378    COPY_DWORDS(j, vb, vertsize, v1);
 379    COPY_DWORDS(j, vb, vertsize, v2);
 380 }
 381
 382
 383 static void
 384 intel_draw_line(struct intel_context *intel,
 385                 intelVertexPtr v0, intelVertexPtr v1)
 386 {
 387    GLuint vertsize = intel->vertex_size;
 388    GLuint *vb = intel_get_prim_space(intel, 2);
 389    int j;
 390
 391    COPY_DWORDS(j, vb, vertsize, v0);
 392    COPY_DWORDS(j, vb, vertsize, v1);
 393 }
 394
 395
 396 static void
 397 intel_draw_point(struct intel_context *intel, intelVertexPtr v0)
 398 {
 399    GLuint vertsize = intel->vertex_size;
 400    GLuint *vb = intel_get_prim_space(intel, 1);
 401    int j;
 402
 403    /* Adjust for sub pixel position -- still required for conform. */
 404    *(float *) &vb[0] = v0->v.x;
 405    *(float *) &vb[1] = v0->v.y;
 406    for (j = 2; j < vertsize; j++)
 407       vb[j] = v0->ui[j];
 408 }
 409
 410
 411
 412 /***********************************************************************
 413  *                Fixup for ARB_point_parameters                       *
 414  ***********************************************************************/
 415
 416 /* Currently not working - VERT_ATTRIB_POINTSIZE isn't correctly
 417  * represented in the fragment program InputsRead field.
 418  */
 419 static void
 420 intel_atten_point(struct intel_context *intel, intelVertexPtr v0)
 421 {
 422    struct gl_context *ctx = &intel->ctx;
 423    GLfloat psz[4], col[4], restore_psz, restore_alpha;
 424
 425    _tnl_get_attr(ctx, v0, _TNL_ATTRIB_POINTSIZE, psz);
 426    _tnl_get_attr(ctx, v0, _TNL_ATTRIB_COLOR0, col);
 427
 428    restore_psz = psz[0];
 429    restore_alpha = col[3];
 430
 431    if (psz[0] >= ctx->Point.Threshold) {
 432       psz[0] = MIN2(psz[0], ctx->Point.MaxSize);
 433    }
 434    else {
 435       GLfloat dsize = psz[0] / ctx->Point.Threshold;
 436       psz[0] = MAX2(ctx->Point.Threshold, ctx->Point.MinSize);
 437       col[3] *= dsize * dsize;
 438    }
 439
 440    if (psz[0] < 1.0)
 441       psz[0] = 1.0;
 442
 443    if (restore_psz != psz[0] || restore_alpha != col[3]) {
 444       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_POINTSIZE, psz);
 445       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_COLOR0, col);
 446
 447       intel_draw_point(intel, v0);
 448
 449       psz[0] = restore_psz;
 450       col[3] = restore_alpha;
 451
 452       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_POINTSIZE, psz);
 453       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_COLOR0, col);
 454    }
 455    else
 456       intel_draw_point(intel, v0);
 457 }
 458
 459
 460
 461
 462
 463 /***********************************************************************
 464  *                Fixup for I915 WPOS texture coordinate                *
 465  ***********************************************************************/
 466
 467
 468
 469 static void
 470 intel_wpos_triangle(struct intel_context *intel,
 471                     intelVertexPtr v0, intelVertexPtr v1, intelVertexPtr v2)
 472 {
 473    GLuint offset = intel->wpos_offset;
 474    GLuint size = intel->wpos_size;
 475    GLfloat *v0_wpos = (GLfloat *)((char *)v0 + offset);
 476    GLfloat *v1_wpos = (GLfloat *)((char *)v1 + offset);
 477    GLfloat *v2_wpos = (GLfloat *)((char *)v2 + offset);
 478
 479    __memcpy(v0_wpos, v0, size);
 480    __memcpy(v1_wpos, v1, size);
 481    __memcpy(v2_wpos, v2, size);
 482
 483    v0_wpos[1] = -v0_wpos[1] + intel->ctx.DrawBuffer->Height;
 484    v1_wpos[1] = -v1_wpos[1] + intel->ctx.DrawBuffer->Height;
 485    v2_wpos[1] = -v2_wpos[1] + intel->ctx.DrawBuffer->Height;
 486
 487
 488    intel_draw_triangle(intel, v0, v1, v2);
 489 }
 490
 491
 492 static void
 493 intel_wpos_line(struct intel_context *intel,
 494                 intelVertexPtr v0, intelVertexPtr v1)
 495 {
 496    GLuint offset = intel->wpos_offset;
 497    GLuint size = intel->wpos_size;
 498    GLfloat *v0_wpos = (GLfloat *)((char *)v0 + offset);
 499    GLfloat *v1_wpos = (GLfloat *)((char *)v1 + offset);
 500
 501    __memcpy(v0_wpos, v0, size);
 502    __memcpy(v1_wpos, v1, size);
 503
 504    v0_wpos[1] = -v0_wpos[1] + intel->ctx.DrawBuffer->Height;
 505    v1_wpos[1] = -v1_wpos[1] + intel->ctx.DrawBuffer->Height;
 506
 507    intel_draw_line(intel, v0, v1);
 508 }
 509
 510
 511 static void
 512 intel_wpos_point(struct intel_context *intel, intelVertexPtr v0)
 513 {
 514    GLuint offset = intel->wpos_offset;
 515    GLuint size = intel->wpos_size;
 516    GLfloat *v0_wpos = (GLfloat *)((char *)v0 + offset);
 517
 518    __memcpy(v0_wpos, v0, size);
 519    v0_wpos[1] = -v0_wpos[1] + intel->ctx.DrawBuffer->Height;
 520
 521    intel_draw_point(intel, v0);
 522 }
 523
 524
 525
 526
 527
 528
 529 /***********************************************************************
 530  *          Macros for t_dd_tritmp.h to draw basic primitives          *
 531  ***********************************************************************/
 532
 533 #define TRI( a, b, c )                          \
 534 do {                                            \
 535    if (DO_FALLBACK)                             \
 536       intel->draw_tri( intel, a, b, c );        \
 537    else                                         \
 538       intel_draw_triangle( intel, a, b, c );    \
 539 } while (0)
 540
 541 #define QUAD( a, b, c, d )                      \
 542 do {                                            \
 543    if (DO_FALLBACK) {                           \
 544       intel->draw_tri( intel, a, b, d );        \
 545       intel->draw_tri( intel, b, c, d );        \
 546    } else                                       \
 547       intel_draw_quad( intel, a, b, c, d );     \
 548 } while (0)
 549
 550 #define LINE( v0, v1 )                          \
 551 do {                                            \
 552    if (DO_FALLBACK)                             \
 553       intel->draw_line( intel, v0, v1 );        \
 554    else                                         \
 555       intel_draw_line( intel, v0, v1 );         \
 556 } while (0)
 557
 558 #define POINT( v0 )                             \
 559 do {                                            \
 560    if (DO_FALLBACK)                             \
 561       intel->draw_point( intel, v0 );           \
 562    else                                         \
 563       intel_draw_point( intel, v0 );            \
 564 } while (0)
 565
 566
 567 /***********************************************************************
 568  *              Build render functions from dd templates               *
 569  ***********************************************************************/
 570
 571 #define INTEL_OFFSET_BIT        0x01
 572 #define INTEL_TWOSIDE_BIT       0x02
 573 #define INTEL_UNFILLED_BIT      0x04
 574 #define INTEL_FALLBACK_BIT      0x08
 575 #define INTEL_MAX_TRIFUNC       0x10
 576
 577
 578 static struct
 579 {
 580    tnl_points_func points;
 581    tnl_line_func line;
 582    tnl_triangle_func triangle;
 583    tnl_quad_func quad;
 584 } rast_tab[INTEL_MAX_TRIFUNC];
 585
 586
 587 #define DO_FALLBACK (IND & INTEL_FALLBACK_BIT)
 588 #define DO_OFFSET   (IND & INTEL_OFFSET_BIT)
 589 #define DO_UNFILLED (IND & INTEL_UNFILLED_BIT)
 590 #define DO_TWOSIDE  (IND & INTEL_TWOSIDE_BIT)
 591 #define DO_FLAT      0
 592 #define DO_TRI       1
 593 #define DO_QUAD      1
 594 #define DO_LINE      1
 595 #define DO_POINTS    1
 596 #define DO_FULL_QUAD 1
 597
 598 #define HAVE_SPEC         1
 599 #define HAVE_BACK_COLORS  0
 600 #define HAVE_HW_FLATSHADE 1
 601 #define VERTEX            intelVertex
 602 #define TAB               rast_tab
 603
 604 /* Only used to pull back colors into vertices (ie, we know color is
 605  * floating point).
 606  */
 607 #define INTEL_COLOR( dst, src )                         \
 608 do {                                                    \
 609    UNCLAMPED_FLOAT_TO_UBYTE((dst)[0], (src)[2]);        \
 610    UNCLAMPED_FLOAT_TO_UBYTE((dst)[1], (src)[1]);        \
 611    UNCLAMPED_FLOAT_TO_UBYTE((dst)[2], (src)[0]);        \
 612    UNCLAMPED_FLOAT_TO_UBYTE((dst)[3], (src)[3]);        \
 613 } while (0)
 614
 615 #define INTEL_SPEC( dst, src )                          \
 616 do {                                                    \
 617    UNCLAMPED_FLOAT_TO_UBYTE((dst)[0], (src)[2]);        \
 618    UNCLAMPED_FLOAT_TO_UBYTE((dst)[1], (src)[1]);        \
 619    UNCLAMPED_FLOAT_TO_UBYTE((dst)[2], (src)[0]);        \
 620 } while (0)
 621
 622
 623 #define DEPTH_SCALE intel->polygon_offset_scale
 624 #define UNFILLED_TRI unfilled_tri
 625 #define UNFILLED_QUAD unfilled_quad
 626 #define VERT_X(_v) _v->v.x
 627 #define VERT_Y(_v) _v->v.y
 628 #define VERT_Z(_v) _v->v.z
 629 #define AREA_IS_CCW( a ) (a > 0)
 630 #define GET_VERTEX(e) (intel->verts + (e * intel->vertex_size * sizeof(GLuint)))
 631
 632 #define VERT_SET_RGBA( v, c )    if (coloroffset) INTEL_COLOR( v->ub4[coloroffset], c )
 633 #define VERT_COPY_RGBA( v0, v1 ) if (coloroffset) v0->ui[coloroffset] = v1->ui[coloroffset]
 634 #define VERT_SAVE_RGBA( idx )    if (coloroffset) color[idx] = v[idx]->ui[coloroffset]
 635 #define VERT_RESTORE_RGBA( idx ) if (coloroffset) v[idx]->ui[coloroffset] = color[idx]
 636
 637 #define VERT_SET_SPEC( v, c )    if (specoffset) INTEL_SPEC( v->ub4[specoffset], c )
 638 #define VERT_COPY_SPEC( v0, v1 ) if (specoffset) COPY_3V(v0->ub4[specoffset], v1->ub4[specoffset])
 639 #define VERT_SAVE_SPEC( idx )    if (specoffset) spec[idx] = v[idx]->ui[specoffset]
 640 #define VERT_RESTORE_SPEC( idx ) if (specoffset) v[idx]->ui[specoffset] = spec[idx]
 641
 642 #define LOCAL_VARS(n)                                                   \
 643    struct intel_context *intel = intel_context(ctx);                    \
 644    GLuint color[n] = { 0, }, spec[n] = { 0, };                          \
 645    GLuint coloroffset = intel->coloroffset;                             \
 646    GLboolean specoffset = intel->specoffset;                            \
 647    (void) color; (void) spec; (void) coloroffset; (void) specoffset;
 648
 649
 650 /***********************************************************************
 651  *                Helpers for rendering unfilled primitives            *
 652  ***********************************************************************/
 653
 654 static const GLuint hw_prim[GL_POLYGON + 1] = {
 655    PRIM3D_POINTLIST,
 656    PRIM3D_LINELIST,
 657    PRIM3D_LINELIST,
 658    PRIM3D_LINELIST,
 659    PRIM3D_TRILIST,
 660    PRIM3D_TRILIST,
 661    PRIM3D_TRILIST,
 662    PRIM3D_TRILIST,
 663    PRIM3D_TRILIST,
 664    PRIM3D_TRILIST
 665 };
 666
 667 #define RASTERIZE(x) intelRasterPrimitive( ctx, x, hw_prim[x] )
 668 #define RENDER_PRIMITIVE intel->render_primitive
 669 #define TAG(x) x
 670 #define IND INTEL_FALLBACK_BIT
 671 #include "tnl_dd/t_dd_unfilled.h"
 672 #undef IND
 673
 674 /***********************************************************************
 675  *                      Generate GL render functions                   *
 676  ***********************************************************************/
 677
 678 #define IND (0)
 679 #define TAG(x) x
 680 #include "tnl_dd/t_dd_tritmp.h"
 681
 682 #define IND (INTEL_OFFSET_BIT)
 683 #define TAG(x) x##_offset
 684 #include "tnl_dd/t_dd_tritmp.h"
 685
 686 #define IND (INTEL_TWOSIDE_BIT)
 687 #define TAG(x) x##_twoside
 688 #include "tnl_dd/t_dd_tritmp.h"
 689
 690 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT)
 691 #define TAG(x) x##_twoside_offset
 692 #include "tnl_dd/t_dd_tritmp.h"
 693
 694 #define IND (INTEL_UNFILLED_BIT)
 695 #define TAG(x) x##_unfilled
 696 #include "tnl_dd/t_dd_tritmp.h"
 697
 698 #define IND (INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT)
 699 #define TAG(x) x##_offset_unfilled
 700 #include "tnl_dd/t_dd_tritmp.h"
 701
 702 #define IND (INTEL_TWOSIDE_BIT|INTEL_UNFILLED_BIT)
 703 #define TAG(x) x##_twoside_unfilled
 704 #include "tnl_dd/t_dd_tritmp.h"
 705
 706 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT)
 707 #define TAG(x) x##_twoside_offset_unfilled
 708 #include "tnl_dd/t_dd_tritmp.h"
 709
 710 #define IND (INTEL_FALLBACK_BIT)
 711 #define TAG(x) x##_fallback
 712 #include "tnl_dd/t_dd_tritmp.h"
 713
 714 #define IND (INTEL_OFFSET_BIT|INTEL_FALLBACK_BIT)
 715 #define TAG(x) x##_offset_fallback
 716 #include "tnl_dd/t_dd_tritmp.h"
 717
 718 #define IND (INTEL_TWOSIDE_BIT|INTEL_FALLBACK_BIT)
 719 #define TAG(x) x##_twoside_fallback
 720 #include "tnl_dd/t_dd_tritmp.h"
 721
 722 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT|INTEL_FALLBACK_BIT)
 723 #define TAG(x) x##_twoside_offset_fallback
 724 #include "tnl_dd/t_dd_tritmp.h"
 725
 726 #define IND (INTEL_UNFILLED_BIT|INTEL_FALLBACK_BIT)
 727 #define TAG(x) x##_unfilled_fallback
 728 #include "tnl_dd/t_dd_tritmp.h"
 729
 730 #define IND (INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT|INTEL_FALLBACK_BIT)
 731 #define TAG(x) x##_offset_unfilled_fallback
 732 #include "tnl_dd/t_dd_tritmp.h"
 733
 734 #define IND (INTEL_TWOSIDE_BIT|INTEL_UNFILLED_BIT|INTEL_FALLBACK_BIT)
 735 #define TAG(x) x##_twoside_unfilled_fallback
 736 #include "tnl_dd/t_dd_tritmp.h"
 737
 738 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT| \
 739              INTEL_FALLBACK_BIT)
 740 #define TAG(x) x##_twoside_offset_unfilled_fallback
 741 #include "tnl_dd/t_dd_tritmp.h"
 742
 743
 744 static void
 745 init_rast_tab(void)
 746 {
 747    init();
 748    init_offset();
 749    init_twoside();
 750    init_twoside_offset();
 751    init_unfilled();
 752    init_offset_unfilled();
 753    init_twoside_unfilled();
 754    init_twoside_offset_unfilled();
 755    init_fallback();
 756    init_offset_fallback();
 757    init_twoside_fallback();
 758    init_twoside_offset_fallback();
 759    init_unfilled_fallback();
 760    init_offset_unfilled_fallback();
 761    init_twoside_unfilled_fallback();
 762    init_twoside_offset_unfilled_fallback();
 763 }
 764
 765
 766 /***********************************************************************
 767  *                    Rasterization fallback helpers                   *
 768  ***********************************************************************/
 769
 770
 771 /* This code is hit only when a mix of accelerated and unaccelerated
 772  * primitives are being drawn, and only for the unaccelerated
 773  * primitives.
 774  */
 775 static void
 776 intel_fallback_tri(struct intel_context *intel,
 777                    intelVertex * v0, intelVertex * v1, intelVertex * v2)
 778 {
 779    struct gl_context *ctx = &intel->ctx;
 780    SWvertex v[3];
 781
 782    if (0)
 783       fprintf(stderr, "\n%s\n", __FUNCTION__);
 784
 785    INTEL_FIREVERTICES(intel);
 786
 787    _swsetup_Translate(ctx, v0, &v[0]);
 788    _swsetup_Translate(ctx, v1, &v[1]);
 789    _swsetup_Translate(ctx, v2, &v[2]);
 790    intelSpanRenderStart(ctx);
 791    _swrast_Triangle(ctx, &v[0], &v[1], &v[2]);
 792    intelSpanRenderFinish(ctx);
 793 }
 794
 795
 796 static void
 797 intel_fallback_line(struct intel_context *intel,
 798                     intelVertex * v0, intelVertex * v1)
 799 {
 800    struct gl_context *ctx = &intel->ctx;
 801    SWvertex v[2];
 802
 803    if (0)
 804       fprintf(stderr, "\n%s\n", __FUNCTION__);
 805
 806    INTEL_FIREVERTICES(intel);
 807
 808    _swsetup_Translate(ctx, v0, &v[0]);
 809    _swsetup_Translate(ctx, v1, &v[1]);
 810    intelSpanRenderStart(ctx);
 811    _swrast_Line(ctx, &v[0], &v[1]);
 812    intelSpanRenderFinish(ctx);
 813 }
 814
 815 static void
 816 intel_fallback_point(struct intel_context *intel,
 817                      intelVertex * v0)
 818 {
 819    struct gl_context *ctx = &intel->ctx;
 820    SWvertex v[1];
 821
 822    if (0)
 823       fprintf(stderr, "\n%s\n", __FUNCTION__);
 824
 825    INTEL_FIREVERTICES(intel);
 826
 827    _swsetup_Translate(ctx, v0, &v[0]);
 828    intelSpanRenderStart(ctx);
 829    _swrast_Point(ctx, &v[0]);
 830    intelSpanRenderFinish(ctx);
 831 }
 832
 833
 834 /**********************************************************************/
 835 /*               Render unclipped begin/end objects                   */
 836 /**********************************************************************/
 837
 838 #define IND 0
 839 #define V(x) (intelVertex *)(vertptr + ((x)*vertsize*sizeof(GLuint)))
 840 #define RENDER_POINTS( start, count )   \
 841    for ( ; start < count ; start++) POINT( V(ELT(start)) );
 842 #define RENDER_LINE( v0, v1 )         LINE( V(v0), V(v1) )
 843 #define RENDER_TRI(  v0, v1, v2 )     TRI(  V(v0), V(v1), V(v2) )
 844 #define RENDER_QUAD( v0, v1, v2, v3 ) QUAD( V(v0), V(v1), V(v2), V(v3) )
 845 #define INIT(x) intelRenderPrimitive( ctx, x )
 846 #undef LOCAL_VARS
 847 #define LOCAL_VARS                                              \
 848     struct intel_context *intel = intel_context(ctx);                   \
 849     GLubyte *vertptr = (GLubyte *)intel->verts;                 \
 850     const GLuint vertsize = intel->vertex_size;         \
 851     const GLuint * const elt = TNL_CONTEXT(ctx)->vb.Elts;       \
 852     (void) elt;
 853 #define RESET_STIPPLE
 854 #define RESET_OCCLUSION
 855 #define PRESERVE_VB_DEFS
 856 #define ELT(x) x
 857 #define TAG(x) intel_##x##_verts
 858 #include "tnl/t_vb_rendertmp.h"
 859 #undef ELT
 860 #undef TAG
 861 #define TAG(x) intel_##x##_elts
 862 #define ELT(x) elt[x]
 863 #include "tnl/t_vb_rendertmp.h"
 864
 865 /**********************************************************************/
 866 /*                   Render clipped primitives                        */
 867 /**********************************************************************/
 868
 869
 870
 871 static void
 872 intelRenderClippedPoly(struct gl_context * ctx, const GLuint * elts, GLuint n)
 873 {
 874    struct intel_context *intel = intel_context(ctx);
 875    TNLcontext *tnl = TNL_CONTEXT(ctx);
 876    struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
 877    GLuint prim = intel->render_primitive;
 878
 879    /* Render the new vertices as an unclipped polygon.
 880     */
 881    {
 882       GLuint *tmp = VB->Elts;
 883       VB->Elts = (GLuint *) elts;
 884       tnl->Driver.Render.PrimTabElts[GL_POLYGON] (ctx, 0, n,
 885                                                   PRIM_BEGIN | PRIM_END);
 886       VB->Elts = tmp;
 887    }
 888
 889    /* Restore the render primitive
 890     */
 891    if (prim != GL_POLYGON)
 892       tnl->Driver.Render.PrimitiveNotify(ctx, prim);
 893 }
 894
 895 static void
 896 intelRenderClippedLine(struct gl_context * ctx, GLuint ii, GLuint jj)
 897 {
 898    TNLcontext *tnl = TNL_CONTEXT(ctx);
 899
 900    tnl->Driver.Render.Line(ctx, ii, jj);
 901 }
 902
 903 static void
 904 intelFastRenderClippedPoly(struct gl_context * ctx, const GLuint * elts, GLuint n)
 905 {
 906    struct intel_context *intel = intel_context(ctx);
 907    const GLuint vertsize = intel->vertex_size;
 908    GLuint *vb = intel_get_prim_space(intel, (n - 2) * 3);
 909    GLubyte *vertptr = (GLubyte *) intel->verts;
 910    const GLuint *start = (const GLuint *) V(elts[0]);
 911    int i, j;
 912
 913    for (i = 2; i < n; i++) {
 914       COPY_DWORDS(j, vb, vertsize, V(elts[i - 1]));
 915       COPY_DWORDS(j, vb, vertsize, V(elts[i]));
 916       COPY_DWORDS(j, vb, vertsize, start);
 917    }
 918 }
 919
 920 /**********************************************************************/
 921 /*                    Choose render functions                         */
 922 /**********************************************************************/
 923
 924
 925
 926
 927 #define ANY_FALLBACK_FLAGS (DD_LINE_STIPPLE | DD_TRI_STIPPLE | DD_POINT_ATTEN | DD_POINT_SMOOTH | DD_TRI_SMOOTH)
 928 #define ANY_RASTER_FLAGS (DD_TRI_LIGHT_TWOSIDE | DD_TRI_OFFSET | DD_TRI_UNFILLED)
 929
 930 void
 931 intelChooseRenderState(struct gl_context * ctx)
 932 {
 933    TNLcontext *tnl = TNL_CONTEXT(ctx);
 934    struct intel_context *intel = intel_context(ctx);
 935    GLuint flags = ctx->_TriangleCaps;
 936    const struct gl_fragment_program *fprog = ctx->FragmentProgram._Current;
 937    GLboolean have_wpos = (fprog && (fprog->Base.InputsRead & FRAG_BIT_WPOS));
 938    GLuint index = 0;
 939
 940    if (INTEL_DEBUG & DEBUG_STATE)
 941       fprintf(stderr, "\n%s\n", __FUNCTION__);
 942
 943    if ((flags & (ANY_FALLBACK_FLAGS | ANY_RASTER_FLAGS)) || have_wpos) {
 944
 945       if (flags & ANY_RASTER_FLAGS) {
 946          if (flags & DD_TRI_LIGHT_TWOSIDE)
 947             index |= INTEL_TWOSIDE_BIT;
 948          if (flags & DD_TRI_OFFSET)
 949             index |= INTEL_OFFSET_BIT;
 950          if (flags & DD_TRI_UNFILLED)
 951             index |= INTEL_UNFILLED_BIT;
 952       }
 953
 954       if (have_wpos) {
 955          intel->draw_point = intel_wpos_point;
 956          intel->draw_line = intel_wpos_line;
 957          intel->draw_tri = intel_wpos_triangle;
 958
 959          /* Make sure these get called:
 960           */
 961          index |= INTEL_FALLBACK_BIT;
 962       }
 963       else {
 964          intel->draw_point = intel_draw_point;
 965          intel->draw_line = intel_draw_line;
 966          intel->draw_tri = intel_draw_triangle;
 967       }
 968
 969       /* Hook in fallbacks for specific primitives.
 970        */
 971       if (flags & ANY_FALLBACK_FLAGS) {
 972          if (flags & DD_LINE_STIPPLE)
 973             intel->draw_line = intel_fallback_line;
 974
 975          if ((flags & DD_TRI_STIPPLE) && !intel->hw_stipple)
 976             intel->draw_tri = intel_fallback_tri;
 977
 978          if (flags & DD_TRI_SMOOTH) {
 979             if (intel->conformance_mode > 0)
 980                intel->draw_tri = intel_fallback_tri;
 981          }
 982
 983          if (flags & DD_POINT_ATTEN) {
 984             if (0)
 985                intel->draw_point = intel_atten_point;
 986             else
 987                intel->draw_point = intel_fallback_point;
 988          }
 989
 990          if (flags & DD_POINT_SMOOTH) {
 991             if (intel->conformance_mode > 0)
 992                intel->draw_point = intel_fallback_point;
 993          }
 994
 995          index |= INTEL_FALLBACK_BIT;
 996       }
 997    }
 998
 999    if (intel->RenderIndex != index) {
1000       intel->RenderIndex = index;
1001
1002       tnl->Driver.Render.Points = rast_tab[index].points;
1003       tnl->Driver.Render.Line = rast_tab[index].line;
1004       tnl->Driver.Render.Triangle = rast_tab[index].triangle;
1005       tnl->Driver.Render.Quad = rast_tab[index].quad;
1006
1007       if (index == 0) {
1008          tnl->Driver.Render.PrimTabVerts = intel_render_tab_verts;
1009          tnl->Driver.Render.PrimTabElts = intel_render_tab_elts;
1010          tnl->Driver.Render.ClippedLine = line; /* from tritmp.h */
1011          tnl->Driver.Render.ClippedPolygon = intelFastRenderClippedPoly;
1012       }
1013       else {
1014          tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
1015          tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
1016          tnl->Driver.Render.ClippedLine = intelRenderClippedLine;
1017          tnl->Driver.Render.ClippedPolygon = intelRenderClippedPoly;
1018       }
1019    }
1020 }
1021
1022 static const GLenum reduced_prim[GL_POLYGON + 1] = {
1023    GL_POINTS,
1024    GL_LINES,
1025    GL_LINES,
1026    GL_LINES,
1027    GL_TRIANGLES,
1028    GL_TRIANGLES,
1029    GL_TRIANGLES,
1030    GL_TRIANGLES,
1031    GL_TRIANGLES,
1032    GL_TRIANGLES
1033 };
1034
1035
1036 /**********************************************************************/
1037 /*                 High level hooks for t_vb_render.c                 */
1038 /**********************************************************************/
1039
1040
1041
1042
1043 static void
1044 intelRunPipeline(struct gl_context * ctx)
1045 {
1046    struct intel_context *intel = intel_context(ctx);
1047
1048    _mesa_lock_context_textures(ctx);
1049
1050    if (ctx->NewState)
1051       _mesa_update_state_locked(ctx);
1052
1053    if (intel->NewGLState) {
1054       if (intel->NewGLState & _NEW_TEXTURE) {
1055          intel->vtbl.update_texture_state(intel);
1056       }
1057
1058       if (!intel->Fallback) {
1059          if (intel->NewGLState & _INTEL_NEW_RENDERSTATE)
1060             intelChooseRenderState(ctx);
1061       }
1062
1063       intel->NewGLState = 0;
1064    }
1065
1066    intel_map_vertex_shader_textures(ctx);
1067    _tnl_run_pipeline(ctx);
1068    intel_unmap_vertex_shader_textures(ctx);
1069
1070    _mesa_unlock_context_textures(ctx);
1071 }
1072
1073 static void
1074 intelRenderStart(struct gl_context * ctx)
1075 {
1076    struct intel_context *intel = intel_context(ctx);
1077
1078    intel_check_front_buffer_rendering(intel);
1079    intel->vtbl.render_start(intel_context(ctx));
1080    intel->vtbl.emit_state(intel);
1081 }
1082
1083 static void
1084 intelRenderFinish(struct gl_context * ctx)
1085 {
1086    struct intel_context *intel = intel_context(ctx);
1087
1088    if (intel->RenderIndex & INTEL_FALLBACK_BIT)
1089       _swrast_flush(ctx);
1090
1091    INTEL_FIREVERTICES(intel);
1092 }
1093
1094
1095
1096
1097  /* System to flush dma and emit state changes based on the rasterized
1098   * primitive.
1099   */
1100 static void
1101 intelRasterPrimitive(struct gl_context * ctx, GLenum rprim, GLuint hwprim)
1102 {
1103    struct intel_context *intel = intel_context(ctx);
1104
1105    if (0)
1106       fprintf(stderr, "%s %s %x\n", __FUNCTION__,
1107               _mesa_lookup_enum_by_nr(rprim), hwprim);
1108
1109    intel->vtbl.reduced_primitive_state(intel, rprim);
1110
1111    /* Start a new primitive.  Arrange to have it flushed later on.
1112     */
1113    if (hwprim != intel->prim.primitive) {
1114       INTEL_FIREVERTICES(intel);
1115
1116       intel_set_prim(intel, hwprim);
1117    }
1118 }
1119
1120
1121  /*
1122   */
1123 static void
1124 intelRenderPrimitive(struct gl_context * ctx, GLenum prim)
1125 {
1126    struct intel_context *intel = intel_context(ctx);
1127
1128    if (0)
1129       fprintf(stderr, "%s %s\n", __FUNCTION__, _mesa_lookup_enum_by_nr(prim));
1130
1131    /* Let some clipping routines know which primitive they're dealing
1132     * with.
1133     */
1134    intel->render_primitive = prim;
1135
1136    /* Shortcircuit this when called from t_dd_rendertmp.h for unfilled
1137     * triangles.  The rasterized primitive will always be reset by
1138     * lower level functions in that case, potentially pingponging the
1139     * state:
1140     */
1141    if (reduced_prim[prim] == GL_TRIANGLES &&
1142        (ctx->_TriangleCaps & DD_TRI_UNFILLED))
1143       return;
1144
1145    /* Set some primitive-dependent state and Start? a new primitive.
1146     */
1147    intelRasterPrimitive(ctx, reduced_prim[prim], hw_prim[prim]);
1148 }
1149
1150
1151  /**********************************************************************/
1152  /*           Transition to/from hardware rasterization.               */
1153  /**********************************************************************/
1154
1155 static char *fallbackStrings[] = {
1156    [0] = "Draw buffer",
1157    [1] = "Read buffer",
1158    [2] = "Depth buffer",
1159    [3] = "Stencil buffer",
1160    [4] = "User disable",
1161    [5] = "Render mode",
1162
1163    [12] = "Texture",
1164    [13] = "Color mask",
1165    [14] = "Stencil",
1166    [15] = "Stipple",
1167    [16] = "Program",
1168    [17] = "Logic op",
1169    [18] = "Smooth polygon",
1170    [19] = "Smooth point",
1171    [20] = "point sprite coord origin",
1172    [21] = "depth/color drawing offset",
1173 };
1174
1175
1176 static char *
1177 getFallbackString(GLuint bit)
1178 {
1179    int i = 0;
1180    while (bit > 1) {
1181       i++;
1182       bit >>= 1;
1183    }
1184    return fallbackStrings[i];
1185 }
1186
1187
1188
1189 /**
1190  * Enable/disable a fallback flag.
1191  * \param bit  one of INTEL_FALLBACK_x flags.
1192  */
1193 void
1194 intelFallback(struct intel_context *intel, GLbitfield bit, GLboolean mode)
1195 {
1196    struct gl_context *ctx = &intel->ctx;
1197    TNLcontext *tnl = TNL_CONTEXT(ctx);
1198    const GLbitfield oldfallback = intel->Fallback;
1199
1200    if (mode) {
1201       intel->Fallback |= bit;
1202       if (oldfallback == 0) {
1203          intel_flush(ctx);
1204          if (INTEL_DEBUG & DEBUG_FALLBACKS)
1205             fprintf(stderr, "ENTER FALLBACK %x: %s\n",
1206                     bit, getFallbackString(bit));
1207          _swsetup_Wakeup(ctx);
1208          intel->RenderIndex = ~0;
1209       }
1210    }
1211    else {
1212       intel->Fallback &= ~bit;
1213       if (oldfallback == bit) {
1214          _swrast_flush(ctx);
1215          if (INTEL_DEBUG & DEBUG_FALLBACKS)
1216             fprintf(stderr, "LEAVE FALLBACK %s\n", getFallbackString(bit));
1217          tnl->Driver.Render.Start = intelRenderStart;
1218          tnl->Driver.Render.PrimitiveNotify = intelRenderPrimitive;
1219          tnl->Driver.Render.Finish = intelRenderFinish;
1220          tnl->Driver.Render.BuildVertices = _tnl_build_vertices;
1221          tnl->Driver.Render.CopyPV = _tnl_copy_pv;
1222          tnl->Driver.Render.Interp = _tnl_interp;
1223
1224          _tnl_invalidate_vertex_state(ctx, ~0);
1225          _tnl_invalidate_vertices(ctx, ~0);
1226          _tnl_install_attrs(ctx,
1227                             intel->vertex_attrs,
1228                             intel->vertex_attr_count,
1229                             intel->ViewportMatrix.m, 0);
1230
1231          intel->NewGLState |= _INTEL_NEW_RENDERSTATE;
1232       }
1233    }
1234 }
1235
1236 union fi
1237 {
1238    GLfloat f;
1239    GLint i;
1240 };
1241
1242 /**********************************************************************/
1243 /*                            Initialization.                         */
1244 /**********************************************************************/
1245
1246
1247 void
1248 intelInitTriFuncs(struct gl_context * ctx)
1249 {
1250    TNLcontext *tnl = TNL_CONTEXT(ctx);
1251    static int firsttime = 1;
1252
1253    if (firsttime) {
1254       init_rast_tab();
1255       firsttime = 0;
1256    }
1257
1258    tnl->Driver.RunPipeline = intelRunPipeline;
1259    tnl->Driver.Render.Start = intelRenderStart;
1260    tnl->Driver.Render.Finish = intelRenderFinish;
1261    tnl->Driver.Render.PrimitiveNotify = intelRenderPrimitive;
1262    tnl->Driver.Render.ResetLineStipple = _swrast_ResetLineStipple;
1263    tnl->Driver.Render.BuildVertices = _tnl_build_vertices;
1264    tnl->Driver.Render.CopyPV = _tnl_copy_pv;
1265    tnl->Driver.Render.Interp = _tnl_interp;
1266 }