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 "intel_tex.h"
  56 #include "intel_chipset.h"
  57 #include "i830_context.h"
  58 #include "i830_reg.h"
  59
  60 static void intelRenderPrimitive(GLcontext * ctx, GLenum prim);
  61 static void intelRasterPrimitive(GLcontext * ctx, GLenum rprim,
  62                                  GLuint hwprim);
  63
  64 static void
  65 intel_flush_inline_primitive(struct intel_context *intel)
  66 {
  67    GLuint used = intel->batch->ptr - intel->prim.start_ptr;
  68
  69    assert(intel->prim.primitive != ~0);
  70
  71 /*    _mesa_printf("/\n"); */
  72
  73    if (used < 8)
  74       goto do_discard;
  75
  76    *(int *) intel->prim.start_ptr = (_3DPRIMITIVE |
  77                                      intel->prim.primitive | (used / 4 - 2));
  78
  79    goto finished;
  80
  81  do_discard:
  82    intel->batch->ptr -= used;
  83
  84  finished:
  85    intel->prim.primitive = ~0;
  86    intel->prim.start_ptr = 0;
  87    intel->prim.flush = 0;
  88 }
  89
  90 static void intel_start_inline(struct intel_context *intel, uint32_t prim)
  91 {
  92    BATCH_LOCALS;
  93
  94    intel->vtbl.emit_state(intel);
  95
  96    intel->no_batch_wrap = GL_TRUE;
  97
  98    /*_mesa_printf("%s *", __progname);*/
  99
 100    /* Emit a slot which will be filled with the inline primitive
 101     * command later.
 102     */
 103    BEGIN_BATCH(2);
 104    OUT_BATCH(0);
 105
 106    assert((intel->batch->dirty_state & (1<<1)) == 0);
 107
 108    intel->prim.start_ptr = intel->batch->ptr;
 109    intel->prim.primitive = prim;
 110    intel->prim.flush = intel_flush_inline_primitive;
 111
 112    OUT_BATCH(0);
 113    ADVANCE_BATCH();
 114
 115    intel->no_batch_wrap = GL_FALSE;
 116 /*    _mesa_printf(">"); */
 117 }
 118
 119 static void intel_wrap_inline(struct intel_context *intel)
 120 {
 121    GLuint prim = intel->prim.primitive;
 122
 123    intel_flush_inline_primitive(intel);
 124    intel_batchbuffer_flush(intel->batch);
 125    intel_start_inline(intel, prim);  /* ??? */
 126 }
 127
 128 static GLuint *intel_extend_inline(struct intel_context *intel, GLuint dwords)
 129 {
 130    GLuint sz = dwords * sizeof(GLuint);
 131    GLuint *ptr;
 132
 133    assert(intel->prim.flush == intel_flush_inline_primitive);
 134
 135    if (intel_batchbuffer_space(intel->batch) < sz)
 136       intel_wrap_inline(intel);
 137
 138 /*    _mesa_printf("."); */
 139
 140    intel->vtbl.assert_not_dirty(intel);
 141
 142    ptr = (GLuint *) intel->batch->ptr;
 143    intel->batch->ptr += sz;
 144
 145    return ptr;
 146 }
 147
 148 /** Sets the primitive type for a primitive sequence, flushing as needed. */
 149 void intel_set_prim(struct intel_context *intel, uint32_t prim)
 150 {
 151    /* if we have no VBOs */
 152
 153    if (intel->intelScreen->no_vbo) {
 154       intel_start_inline(intel, prim);
 155       return;
 156    }
 157    if (prim != intel->prim.primitive) {
 158       INTEL_FIREVERTICES(intel);
 159       intel->prim.primitive = prim;
 160    }
 161 }
 162
 163 /** Returns mapped VB space for the given number of vertices */
 164 uint32_t *intel_get_prim_space(struct intel_context *intel, unsigned int count)
 165 {
 166    uint32_t *addr;
 167
 168    if (intel->intelScreen->no_vbo) {
 169       return intel_extend_inline(intel, count * intel->vertex_size);
 170    }
 171
 172    /* Check for space in the existing VB */
 173    if (intel->prim.vb_bo == NULL ||
 174        (intel->prim.current_offset +
 175         count * intel->vertex_size * 4) > INTEL_VB_SIZE ||
 176        (intel->prim.count + count) >= (1 << 16)) {
 177       /* Flush existing prim if any */
 178       INTEL_FIREVERTICES(intel);
 179
 180       intel_finish_vb(intel);
 181
 182       /* Start a new VB */
 183       if (intel->prim.vb == NULL)
 184          intel->prim.vb = malloc(INTEL_VB_SIZE);
 185       intel->prim.vb_bo = dri_bo_alloc(intel->bufmgr, "vb",
 186                                        INTEL_VB_SIZE, 4);
 187       intel->prim.start_offset = 0;
 188       intel->prim.current_offset = 0;
 189    }
 190
 191    intel->prim.flush = intel_flush_prim;
 192
 193    addr = (uint32_t *)(intel->prim.vb + intel->prim.current_offset);
 194    intel->prim.current_offset += intel->vertex_size * 4 * count;
 195    intel->prim.count += count;
 196
 197    return addr;
 198 }
 199
 200 /** Dispatches the accumulated primitive to the batchbuffer. */
 201 void intel_flush_prim(struct intel_context *intel)
 202 {
 203    dri_bo *aper_array[2];
 204    dri_bo *vb_bo;
 205    unsigned int offset, count;
 206    BATCH_LOCALS;
 207
 208    /* Must be called after an intel_start_prim. */
 209    assert(intel->prim.primitive != ~0);
 210
 211    if (intel->prim.count == 0)
 212       return;
 213
 214    /* Clear the current prims out of the context state so that a batch flush
 215     * flush triggered by emit_state doesn't loop back to flush_prim again.
 216     */
 217    vb_bo = intel->prim.vb_bo;
 218    dri_bo_reference(vb_bo);
 219    count = intel->prim.count;
 220    intel->prim.count = 0;
 221    offset = intel->prim.start_offset;
 222    intel->prim.start_offset = intel->prim.current_offset;
 223    if (!intel->gen >= 3)
 224       intel->prim.start_offset = ALIGN(intel->prim.start_offset, 128);
 225    intel->prim.flush = NULL;
 226
 227    intel->vtbl.emit_state(intel);
 228
 229    aper_array[0] = intel->batch->buf;
 230    aper_array[1] = vb_bo;
 231    if (dri_bufmgr_check_aperture_space(aper_array, 2)) {
 232       intel_batchbuffer_flush(intel->batch);
 233       intel->vtbl.emit_state(intel);
 234    }
 235
 236    /* Ensure that we don't start a new batch for the following emit, which
 237     * depends on the state just emitted. emit_state should be making sure we
 238     * have the space for this.
 239     */
 240    intel->no_batch_wrap = GL_TRUE;
 241
 242    /* Check that we actually emitted the state into this batch, using the
 243     * UPLOAD_CTX bit as the signal.
 244     */
 245    assert((intel->batch->dirty_state & (1<<1)) == 0);
 246
 247 #if 0
 248    printf("emitting %d..%d=%d vertices size %d\n", offset,
 249           intel->prim.current_offset, count,
 250           intel->vertex_size * 4);
 251 #endif
 252
 253    if (intel->gen >= 3) {
 254       BEGIN_BATCH(5);
 255       OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 |
 256                 I1_LOAD_S(0) | I1_LOAD_S(1) | 1);
 257       assert((offset & !S0_VB_OFFSET_MASK) == 0);
 258       OUT_RELOC(vb_bo, I915_GEM_DOMAIN_VERTEX, 0, offset);
 259       OUT_BATCH((intel->vertex_size << S1_VERTEX_WIDTH_SHIFT) |
 260                 (intel->vertex_size << S1_VERTEX_PITCH_SHIFT));
 261
 262       OUT_BATCH(_3DPRIMITIVE |
 263                 PRIM_INDIRECT |
 264                 PRIM_INDIRECT_SEQUENTIAL |
 265                 intel->prim.primitive |
 266                 count);
 267       OUT_BATCH(0); /* Beginning vertex index */
 268       ADVANCE_BATCH();
 269    } else {
 270       struct i830_context *i830 = i830_context(&intel->ctx);
 271
 272       BEGIN_BATCH(5);
 273       OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 |
 274                 I1_LOAD_S(0) | I1_LOAD_S(2) | 1);
 275       /* S0 */
 276       assert((offset & !S0_VB_OFFSET_MASK_830) == 0);
 277       OUT_RELOC(vb_bo, I915_GEM_DOMAIN_VERTEX, 0,
 278                 offset | (intel->vertex_size << S0_VB_PITCH_SHIFT_830) |
 279                 S0_VB_ENABLE_830);
 280       /* S2
 281        * This is somewhat unfortunate -- VB width is tied up with
 282        * vertex format data that we've already uploaded through
 283        * _3DSTATE_VFT[01]_CMD.  We may want to replace emits of VFT state with
 284        * STATE_IMMEDIATE_1 like this to avoid duplication.
 285        */
 286       OUT_BATCH((i830->state.Ctx[I830_CTXREG_VF] & VFT0_TEX_COUNT_MASK) >>
 287                 VFT0_TEX_COUNT_SHIFT << S2_TEX_COUNT_SHIFT_830 |
 288                 (i830->state.Ctx[I830_CTXREG_VF2] << 16) |
 289                 intel->vertex_size << S2_VERTEX_0_WIDTH_SHIFT_830);
 290
 291       OUT_BATCH(_3DPRIMITIVE |
 292                 PRIM_INDIRECT |
 293                 PRIM_INDIRECT_SEQUENTIAL |
 294                 intel->prim.primitive |
 295                 count);
 296       OUT_BATCH(0); /* Beginning vertex index */
 297       ADVANCE_BATCH();
 298    }
 299
 300    intel->no_batch_wrap = GL_FALSE;
 301
 302    dri_bo_unreference(vb_bo);
 303 }
 304
 305 /**
 306  * Uploads the locally-accumulated VB into the buffer object.
 307  *
 308  * This avoids us thrashing the cachelines in and out as the buffer gets
 309  * filled, dispatched, then reused as the hardware completes rendering from it,
 310  * and also lets us clflush less if we dispatch with a partially-filled VB.
 311  *
 312  * This is called normally from get_space when we're finishing a BO, but also
 313  * at batch flush time so that we don't try accessing the contents of a
 314  * just-dispatched buffer.
 315  */
 316 void intel_finish_vb(struct intel_context *intel)
 317 {
 318    if (intel->prim.vb_bo == NULL)
 319       return;
 320
 321    dri_bo_subdata(intel->prim.vb_bo, 0, intel->prim.start_offset,
 322                   intel->prim.vb);
 323    dri_bo_unreference(intel->prim.vb_bo);
 324    intel->prim.vb_bo = NULL;
 325 }
 326
 327 /***********************************************************************
 328  *                    Emit primitives as inline vertices               *
 329  ***********************************************************************/
 330
 331 #ifdef __i386__
 332 #define COPY_DWORDS( j, vb, vertsize, v )                       \
 333 do {                                                            \
 334    int __tmp;                                                   \
 335    __asm__ __volatile__( "rep ; movsl"                          \
 336                          : "=%c" (j), "=D" (vb), "=S" (__tmp)   \
 337                          : "0" (vertsize),                      \
 338                          "D" ((long)vb),                        \
 339                          "S" ((long)v) );                       \
 340 } while (0)
 341 #else
 342 #define COPY_DWORDS( j, vb, vertsize, v )       \
 343 do {                                            \
 344    for ( j = 0 ; j < vertsize ; j++ ) {         \
 345       vb[j] = ((GLuint *)v)[j];                 \
 346    }                                            \
 347    vb += vertsize;                              \
 348 } while (0)
 349 #endif
 350
 351 static void
 352 intel_draw_quad(struct intel_context *intel,
 353                 intelVertexPtr v0,
 354                 intelVertexPtr v1, intelVertexPtr v2, intelVertexPtr v3)
 355 {
 356    GLuint vertsize = intel->vertex_size;
 357    GLuint *vb = intel_get_prim_space(intel, 6);
 358    int j;
 359
 360    COPY_DWORDS(j, vb, vertsize, v0);
 361    COPY_DWORDS(j, vb, vertsize, v1);
 362
 363    /* If smooth shading, draw like a trifan which gives better
 364     * rasterization.  Otherwise draw as two triangles with provoking
 365     * vertex in third position as required for flat shading.
 366     */
 367    if (intel->ctx.Light.ShadeModel == GL_FLAT) {
 368       COPY_DWORDS(j, vb, vertsize, v3);
 369       COPY_DWORDS(j, vb, vertsize, v1);
 370    }
 371    else {
 372       COPY_DWORDS(j, vb, vertsize, v2);
 373       COPY_DWORDS(j, vb, vertsize, v0);
 374    }
 375
 376    COPY_DWORDS(j, vb, vertsize, v2);
 377    COPY_DWORDS(j, vb, vertsize, v3);
 378 }
 379
 380 static void
 381 intel_draw_triangle(struct intel_context *intel,
 382                     intelVertexPtr v0, intelVertexPtr v1, intelVertexPtr v2)
 383 {
 384    GLuint vertsize = intel->vertex_size;
 385    GLuint *vb = intel_get_prim_space(intel, 3);
 386    int j;
 387
 388    COPY_DWORDS(j, vb, vertsize, v0);
 389    COPY_DWORDS(j, vb, vertsize, v1);
 390    COPY_DWORDS(j, vb, vertsize, v2);
 391 }
 392
 393
 394 static void
 395 intel_draw_line(struct intel_context *intel,
 396                 intelVertexPtr v0, intelVertexPtr v1)
 397 {
 398    GLuint vertsize = intel->vertex_size;
 399    GLuint *vb = intel_get_prim_space(intel, 2);
 400    int j;
 401
 402    COPY_DWORDS(j, vb, vertsize, v0);
 403    COPY_DWORDS(j, vb, vertsize, v1);
 404 }
 405
 406
 407 static void
 408 intel_draw_point(struct intel_context *intel, intelVertexPtr v0)
 409 {
 410    GLuint vertsize = intel->vertex_size;
 411    GLuint *vb = intel_get_prim_space(intel, 1);
 412    int j;
 413
 414    /* Adjust for sub pixel position -- still required for conform. */
 415    *(float *) &vb[0] = v0->v.x;
 416    *(float *) &vb[1] = v0->v.y;
 417    for (j = 2; j < vertsize; j++)
 418       vb[j] = v0->ui[j];
 419 }
 420
 421
 422
 423 /***********************************************************************
 424  *                Fixup for ARB_point_parameters                       *
 425  ***********************************************************************/
 426
 427 /* Currently not working - VERT_ATTRIB_POINTSIZE isn't correctly
 428  * represented in the fragment program InputsRead field.
 429  */
 430 static void
 431 intel_atten_point(struct intel_context *intel, intelVertexPtr v0)
 432 {
 433    GLcontext *ctx = &intel->ctx;
 434    GLfloat psz[4], col[4], restore_psz, restore_alpha;
 435
 436    _tnl_get_attr(ctx, v0, _TNL_ATTRIB_POINTSIZE, psz);
 437    _tnl_get_attr(ctx, v0, _TNL_ATTRIB_COLOR0, col);
 438
 439    restore_psz = psz[0];
 440    restore_alpha = col[3];
 441
 442    if (psz[0] >= ctx->Point.Threshold) {
 443       psz[0] = MIN2(psz[0], ctx->Point.MaxSize);
 444    }
 445    else {
 446       GLfloat dsize = psz[0] / ctx->Point.Threshold;
 447       psz[0] = MAX2(ctx->Point.Threshold, ctx->Point.MinSize);
 448       col[3] *= dsize * dsize;
 449    }
 450
 451    if (psz[0] < 1.0)
 452       psz[0] = 1.0;
 453
 454    if (restore_psz != psz[0] || restore_alpha != col[3]) {
 455       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_POINTSIZE, psz);
 456       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_COLOR0, col);
 457
 458       intel_draw_point(intel, v0);
 459
 460       psz[0] = restore_psz;
 461       col[3] = restore_alpha;
 462
 463       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_POINTSIZE, psz);
 464       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_COLOR0, col);
 465    }
 466    else
 467       intel_draw_point(intel, v0);
 468 }
 469
 470
 471
 472
 473
 474 /***********************************************************************
 475  *                Fixup for I915 WPOS texture coordinate                *
 476  ***********************************************************************/
 477
 478
 479
 480 static void
 481 intel_wpos_triangle(struct intel_context *intel,
 482                     intelVertexPtr v0, intelVertexPtr v1, intelVertexPtr v2)
 483 {
 484    GLuint offset = intel->wpos_offset;
 485    GLuint size = intel->wpos_size;
 486    GLfloat *v0_wpos = (GLfloat *)((char *)v0 + offset);
 487    GLfloat *v1_wpos = (GLfloat *)((char *)v1 + offset);
 488    GLfloat *v2_wpos = (GLfloat *)((char *)v2 + offset);
 489
 490    __memcpy(v0_wpos, v0, size);
 491    __memcpy(v1_wpos, v1, size);
 492    __memcpy(v2_wpos, v2, size);
 493
 494    v0_wpos[1] = -v0_wpos[1] + intel->driDrawable->h;
 495    v1_wpos[1] = -v1_wpos[1] + intel->driDrawable->h;
 496    v2_wpos[1] = -v2_wpos[1] + intel->driDrawable->h;
 497
 498
 499    intel_draw_triangle(intel, v0, v1, v2);
 500 }
 501
 502
 503 static void
 504 intel_wpos_line(struct intel_context *intel,
 505                 intelVertexPtr v0, intelVertexPtr v1)
 506 {
 507    GLuint offset = intel->wpos_offset;
 508    GLuint size = intel->wpos_size;
 509    GLfloat *v0_wpos = (GLfloat *)((char *)v0 + offset);
 510    GLfloat *v1_wpos = (GLfloat *)((char *)v1 + offset);
 511
 512    __memcpy(v0_wpos, v0, size);
 513    __memcpy(v1_wpos, v1, size);
 514
 515    v0_wpos[1] = -v0_wpos[1] + intel->driDrawable->h;
 516    v1_wpos[1] = -v1_wpos[1] + intel->driDrawable->h;
 517
 518    intel_draw_line(intel, v0, v1);
 519 }
 520
 521
 522 static void
 523 intel_wpos_point(struct intel_context *intel, intelVertexPtr v0)
 524 {
 525    GLuint offset = intel->wpos_offset;
 526    GLuint size = intel->wpos_size;
 527    GLfloat *v0_wpos = (GLfloat *)((char *)v0 + offset);
 528
 529    __memcpy(v0_wpos, v0, size);
 530    v0_wpos[1] = -v0_wpos[1] + intel->driDrawable->h;
 531
 532    intel_draw_point(intel, v0);
 533 }
 534
 535
 536
 537
 538
 539
 540 /***********************************************************************
 541  *          Macros for t_dd_tritmp.h to draw basic primitives          *
 542  ***********************************************************************/
 543
 544 #define TRI( a, b, c )                          \
 545 do {                                            \
 546    if (DO_FALLBACK)                             \
 547       intel->draw_tri( intel, a, b, c );        \
 548    else                                         \
 549       intel_draw_triangle( intel, a, b, c );    \
 550 } while (0)
 551
 552 #define QUAD( a, b, c, d )                      \
 553 do {                                            \
 554    if (DO_FALLBACK) {                           \
 555       intel->draw_tri( intel, a, b, d );        \
 556       intel->draw_tri( intel, b, c, d );        \
 557    } else                                       \
 558       intel_draw_quad( intel, a, b, c, d );     \
 559 } while (0)
 560
 561 #define LINE( v0, v1 )                          \
 562 do {                                            \
 563    if (DO_FALLBACK)                             \
 564       intel->draw_line( intel, v0, v1 );        \
 565    else                                         \
 566       intel_draw_line( intel, v0, v1 );         \
 567 } while (0)
 568
 569 #define POINT( v0 )                             \
 570 do {                                            \
 571    if (DO_FALLBACK)                             \
 572       intel->draw_point( intel, v0 );           \
 573    else                                         \
 574       intel_draw_point( intel, v0 );            \
 575 } while (0)
 576
 577
 578 /***********************************************************************
 579  *              Build render functions from dd templates               *
 580  ***********************************************************************/
 581
 582 #define INTEL_OFFSET_BIT        0x01
 583 #define INTEL_TWOSIDE_BIT       0x02
 584 #define INTEL_UNFILLED_BIT      0x04
 585 #define INTEL_FALLBACK_BIT      0x08
 586 #define INTEL_MAX_TRIFUNC       0x10
 587
 588
 589 static struct
 590 {
 591    tnl_points_func points;
 592    tnl_line_func line;
 593    tnl_triangle_func triangle;
 594    tnl_quad_func quad;
 595 } rast_tab[INTEL_MAX_TRIFUNC];
 596
 597
 598 #define DO_FALLBACK (IND & INTEL_FALLBACK_BIT)
 599 #define DO_OFFSET   (IND & INTEL_OFFSET_BIT)
 600 #define DO_UNFILLED (IND & INTEL_UNFILLED_BIT)
 601 #define DO_TWOSIDE  (IND & INTEL_TWOSIDE_BIT)
 602 #define DO_FLAT      0
 603 #define DO_TRI       1
 604 #define DO_QUAD      1
 605 #define DO_LINE      1
 606 #define DO_POINTS    1
 607 #define DO_FULL_QUAD 1
 608
 609 #define HAVE_RGBA         1
 610 #define HAVE_SPEC         1
 611 #define HAVE_BACK_COLORS  0
 612 #define HAVE_HW_FLATSHADE 1
 613 #define VERTEX            intelVertex
 614 #define TAB               rast_tab
 615
 616 /* Only used to pull back colors into vertices (ie, we know color is
 617  * floating point).
 618  */
 619 #define INTEL_COLOR( dst, src )                         \
 620 do {                                                    \
 621    UNCLAMPED_FLOAT_TO_UBYTE((dst)[0], (src)[2]);        \
 622    UNCLAMPED_FLOAT_TO_UBYTE((dst)[1], (src)[1]);        \
 623    UNCLAMPED_FLOAT_TO_UBYTE((dst)[2], (src)[0]);        \
 624    UNCLAMPED_FLOAT_TO_UBYTE((dst)[3], (src)[3]);        \
 625 } while (0)
 626
 627 #define INTEL_SPEC( dst, src )                          \
 628 do {                                                    \
 629    UNCLAMPED_FLOAT_TO_UBYTE((dst)[0], (src)[2]);        \
 630    UNCLAMPED_FLOAT_TO_UBYTE((dst)[1], (src)[1]);        \
 631    UNCLAMPED_FLOAT_TO_UBYTE((dst)[2], (src)[0]);        \
 632 } while (0)
 633
 634
 635 #define DEPTH_SCALE intel->polygon_offset_scale
 636 #define UNFILLED_TRI unfilled_tri
 637 #define UNFILLED_QUAD unfilled_quad
 638 #define VERT_X(_v) _v->v.x
 639 #define VERT_Y(_v) _v->v.y
 640 #define VERT_Z(_v) _v->v.z
 641 #define AREA_IS_CCW( a ) (a > 0)
 642 #define GET_VERTEX(e) (intel->verts + (e * intel->vertex_size * sizeof(GLuint)))
 643
 644 #define VERT_SET_RGBA( v, c )    if (coloroffset) INTEL_COLOR( v->ub4[coloroffset], c )
 645 #define VERT_COPY_RGBA( v0, v1 ) if (coloroffset) v0->ui[coloroffset] = v1->ui[coloroffset]
 646 #define VERT_SAVE_RGBA( idx )    if (coloroffset) color[idx] = v[idx]->ui[coloroffset]
 647 #define VERT_RESTORE_RGBA( idx ) if (coloroffset) v[idx]->ui[coloroffset] = color[idx]
 648
 649 #define VERT_SET_SPEC( v, c )    if (specoffset) INTEL_SPEC( v->ub4[specoffset], c )
 650 #define VERT_COPY_SPEC( v0, v1 ) if (specoffset) COPY_3V(v0->ub4[specoffset], v1->ub4[specoffset])
 651 #define VERT_SAVE_SPEC( idx )    if (specoffset) spec[idx] = v[idx]->ui[specoffset]
 652 #define VERT_RESTORE_SPEC( idx ) if (specoffset) v[idx]->ui[specoffset] = spec[idx]
 653
 654 #define LOCAL_VARS(n)                                                   \
 655    struct intel_context *intel = intel_context(ctx);                    \
 656    GLuint color[n] = { 0, }, spec[n] = { 0, };                          \
 657    GLuint coloroffset = intel->coloroffset;                             \
 658    GLboolean specoffset = intel->specoffset;                            \
 659    (void) color; (void) spec; (void) coloroffset; (void) specoffset;
 660
 661
 662 /***********************************************************************
 663  *                Helpers for rendering unfilled primitives            *
 664  ***********************************************************************/
 665
 666 static const GLuint hw_prim[GL_POLYGON + 1] = {
 667    PRIM3D_POINTLIST,
 668    PRIM3D_LINELIST,
 669    PRIM3D_LINELIST,
 670    PRIM3D_LINELIST,
 671    PRIM3D_TRILIST,
 672    PRIM3D_TRILIST,
 673    PRIM3D_TRILIST,
 674    PRIM3D_TRILIST,
 675    PRIM3D_TRILIST,
 676    PRIM3D_TRILIST
 677 };
 678
 679 #define RASTERIZE(x) intelRasterPrimitive( ctx, x, hw_prim[x] )
 680 #define RENDER_PRIMITIVE intel->render_primitive
 681 #define TAG(x) x
 682 #define IND INTEL_FALLBACK_BIT
 683 #include "tnl_dd/t_dd_unfilled.h"
 684 #undef IND
 685
 686 /***********************************************************************
 687  *                      Generate GL render functions                   *
 688  ***********************************************************************/
 689
 690 #define IND (0)
 691 #define TAG(x) x
 692 #include "tnl_dd/t_dd_tritmp.h"
 693
 694 #define IND (INTEL_OFFSET_BIT)
 695 #define TAG(x) x##_offset
 696 #include "tnl_dd/t_dd_tritmp.h"
 697
 698 #define IND (INTEL_TWOSIDE_BIT)
 699 #define TAG(x) x##_twoside
 700 #include "tnl_dd/t_dd_tritmp.h"
 701
 702 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT)
 703 #define TAG(x) x##_twoside_offset
 704 #include "tnl_dd/t_dd_tritmp.h"
 705
 706 #define IND (INTEL_UNFILLED_BIT)
 707 #define TAG(x) x##_unfilled
 708 #include "tnl_dd/t_dd_tritmp.h"
 709
 710 #define IND (INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT)
 711 #define TAG(x) x##_offset_unfilled
 712 #include "tnl_dd/t_dd_tritmp.h"
 713
 714 #define IND (INTEL_TWOSIDE_BIT|INTEL_UNFILLED_BIT)
 715 #define TAG(x) x##_twoside_unfilled
 716 #include "tnl_dd/t_dd_tritmp.h"
 717
 718 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT)
 719 #define TAG(x) x##_twoside_offset_unfilled
 720 #include "tnl_dd/t_dd_tritmp.h"
 721
 722 #define IND (INTEL_FALLBACK_BIT)
 723 #define TAG(x) x##_fallback
 724 #include "tnl_dd/t_dd_tritmp.h"
 725
 726 #define IND (INTEL_OFFSET_BIT|INTEL_FALLBACK_BIT)
 727 #define TAG(x) x##_offset_fallback
 728 #include "tnl_dd/t_dd_tritmp.h"
 729
 730 #define IND (INTEL_TWOSIDE_BIT|INTEL_FALLBACK_BIT)
 731 #define TAG(x) x##_twoside_fallback
 732 #include "tnl_dd/t_dd_tritmp.h"
 733
 734 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT|INTEL_FALLBACK_BIT)
 735 #define TAG(x) x##_twoside_offset_fallback
 736 #include "tnl_dd/t_dd_tritmp.h"
 737
 738 #define IND (INTEL_UNFILLED_BIT|INTEL_FALLBACK_BIT)
 739 #define TAG(x) x##_unfilled_fallback
 740 #include "tnl_dd/t_dd_tritmp.h"
 741
 742 #define IND (INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT|INTEL_FALLBACK_BIT)
 743 #define TAG(x) x##_offset_unfilled_fallback
 744 #include "tnl_dd/t_dd_tritmp.h"
 745
 746 #define IND (INTEL_TWOSIDE_BIT|INTEL_UNFILLED_BIT|INTEL_FALLBACK_BIT)
 747 #define TAG(x) x##_twoside_unfilled_fallback
 748 #include "tnl_dd/t_dd_tritmp.h"
 749
 750 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT| \
 751              INTEL_FALLBACK_BIT)
 752 #define TAG(x) x##_twoside_offset_unfilled_fallback
 753 #include "tnl_dd/t_dd_tritmp.h"
 754
 755
 756 static void
 757 init_rast_tab(void)
 758 {
 759    init();
 760    init_offset();
 761    init_twoside();
 762    init_twoside_offset();
 763    init_unfilled();
 764    init_offset_unfilled();
 765    init_twoside_unfilled();
 766    init_twoside_offset_unfilled();
 767    init_fallback();
 768    init_offset_fallback();
 769    init_twoside_fallback();
 770    init_twoside_offset_fallback();
 771    init_unfilled_fallback();
 772    init_offset_unfilled_fallback();
 773    init_twoside_unfilled_fallback();
 774    init_twoside_offset_unfilled_fallback();
 775 }
 776
 777
 778 /***********************************************************************
 779  *                    Rasterization fallback helpers                   *
 780  ***********************************************************************/
 781
 782
 783 /* This code is hit only when a mix of accelerated and unaccelerated
 784  * primitives are being drawn, and only for the unaccelerated
 785  * primitives.
 786  */
 787 static void
 788 intel_fallback_tri(struct intel_context *intel,
 789                    intelVertex * v0, intelVertex * v1, intelVertex * v2)
 790 {
 791    GLcontext *ctx = &intel->ctx;
 792    SWvertex v[3];
 793
 794    if (0)
 795       fprintf(stderr, "\n%s\n", __FUNCTION__);
 796
 797    INTEL_FIREVERTICES(intel);
 798
 799    _swsetup_Translate(ctx, v0, &v[0]);
 800    _swsetup_Translate(ctx, v1, &v[1]);
 801    _swsetup_Translate(ctx, v2, &v[2]);
 802    intelSpanRenderStart(ctx);
 803    _swrast_Triangle(ctx, &v[0], &v[1], &v[2]);
 804    intelSpanRenderFinish(ctx);
 805 }
 806
 807
 808 static void
 809 intel_fallback_line(struct intel_context *intel,
 810                     intelVertex * v0, intelVertex * v1)
 811 {
 812    GLcontext *ctx = &intel->ctx;
 813    SWvertex v[2];
 814
 815    if (0)
 816       fprintf(stderr, "\n%s\n", __FUNCTION__);
 817
 818    INTEL_FIREVERTICES(intel);
 819
 820    _swsetup_Translate(ctx, v0, &v[0]);
 821    _swsetup_Translate(ctx, v1, &v[1]);
 822    intelSpanRenderStart(ctx);
 823    _swrast_Line(ctx, &v[0], &v[1]);
 824    intelSpanRenderFinish(ctx);
 825 }
 826
 827 static void
 828 intel_fallback_point(struct intel_context *intel,
 829                      intelVertex * v0)
 830 {
 831    GLcontext *ctx = &intel->ctx;
 832    SWvertex v[1];
 833
 834    if (0)
 835       fprintf(stderr, "\n%s\n", __FUNCTION__);
 836
 837    INTEL_FIREVERTICES(intel);
 838
 839    _swsetup_Translate(ctx, v0, &v[0]);
 840    intelSpanRenderStart(ctx);
 841    _swrast_Point(ctx, &v[0]);
 842    intelSpanRenderFinish(ctx);
 843 }
 844
 845
 846 /**********************************************************************/
 847 /*               Render unclipped begin/end objects                   */
 848 /**********************************************************************/
 849
 850 #define IND 0
 851 #define V(x) (intelVertex *)(vertptr + ((x)*vertsize*sizeof(GLuint)))
 852 #define RENDER_POINTS( start, count )   \
 853    for ( ; start < count ; start++) POINT( V(ELT(start)) );
 854 #define RENDER_LINE( v0, v1 )         LINE( V(v0), V(v1) )
 855 #define RENDER_TRI(  v0, v1, v2 )     TRI(  V(v0), V(v1), V(v2) )
 856 #define RENDER_QUAD( v0, v1, v2, v3 ) QUAD( V(v0), V(v1), V(v2), V(v3) )
 857 #define INIT(x) intelRenderPrimitive( ctx, x )
 858 #undef LOCAL_VARS
 859 #define LOCAL_VARS                                              \
 860     struct intel_context *intel = intel_context(ctx);                   \
 861     GLubyte *vertptr = (GLubyte *)intel->verts;                 \
 862     const GLuint vertsize = intel->vertex_size;         \
 863     const GLuint * const elt = TNL_CONTEXT(ctx)->vb.Elts;       \
 864     (void) elt;
 865 #define RESET_STIPPLE
 866 #define RESET_OCCLUSION
 867 #define PRESERVE_VB_DEFS
 868 #define ELT(x) x
 869 #define TAG(x) intel_##x##_verts
 870 #include "tnl/t_vb_rendertmp.h"
 871 #undef ELT
 872 #undef TAG
 873 #define TAG(x) intel_##x##_elts
 874 #define ELT(x) elt[x]
 875 #include "tnl/t_vb_rendertmp.h"
 876
 877 /**********************************************************************/
 878 /*                   Render clipped primitives                        */
 879 /**********************************************************************/
 880
 881
 882
 883 static void
 884 intelRenderClippedPoly(GLcontext * ctx, const GLuint * elts, GLuint n)
 885 {
 886    struct intel_context *intel = intel_context(ctx);
 887    TNLcontext *tnl = TNL_CONTEXT(ctx);
 888    struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
 889    GLuint prim = intel->render_primitive;
 890
 891    /* Render the new vertices as an unclipped polygon.
 892     */
 893    {
 894       GLuint *tmp = VB->Elts;
 895       VB->Elts = (GLuint *) elts;
 896       tnl->Driver.Render.PrimTabElts[GL_POLYGON] (ctx, 0, n,
 897                                                   PRIM_BEGIN | PRIM_END);
 898       VB->Elts = tmp;
 899    }
 900
 901    /* Restore the render primitive
 902     */
 903    if (prim != GL_POLYGON)
 904       tnl->Driver.Render.PrimitiveNotify(ctx, prim);
 905 }
 906
 907 static void
 908 intelRenderClippedLine(GLcontext * ctx, GLuint ii, GLuint jj)
 909 {
 910    TNLcontext *tnl = TNL_CONTEXT(ctx);
 911
 912    tnl->Driver.Render.Line(ctx, ii, jj);
 913 }
 914
 915 static void
 916 intelFastRenderClippedPoly(GLcontext * ctx, const GLuint * elts, GLuint n)
 917 {
 918    struct intel_context *intel = intel_context(ctx);
 919    const GLuint vertsize = intel->vertex_size;
 920    GLuint *vb = intel_get_prim_space(intel, (n - 2) * 3);
 921    GLubyte *vertptr = (GLubyte *) intel->verts;
 922    const GLuint *start = (const GLuint *) V(elts[0]);
 923    int i, j;
 924
 925    for (i = 2; i < n; i++) {
 926       COPY_DWORDS(j, vb, vertsize, V(elts[i - 1]));
 927       COPY_DWORDS(j, vb, vertsize, V(elts[i]));
 928       COPY_DWORDS(j, vb, vertsize, start);
 929    }
 930 }
 931
 932 /**********************************************************************/
 933 /*                    Choose render functions                         */
 934 /**********************************************************************/
 935
 936
 937
 938
 939 #define ANY_FALLBACK_FLAGS (DD_LINE_STIPPLE | DD_TRI_STIPPLE | DD_POINT_ATTEN | DD_POINT_SMOOTH | DD_TRI_SMOOTH)
 940 #define ANY_RASTER_FLAGS (DD_TRI_LIGHT_TWOSIDE | DD_TRI_OFFSET | DD_TRI_UNFILLED)
 941
 942 void
 943 intelChooseRenderState(GLcontext * ctx)
 944 {
 945    TNLcontext *tnl = TNL_CONTEXT(ctx);
 946    struct intel_context *intel = intel_context(ctx);
 947    GLuint flags = ctx->_TriangleCaps;
 948    const struct gl_fragment_program *fprog = ctx->FragmentProgram._Current;
 949    GLboolean have_wpos = (fprog && (fprog->Base.InputsRead & FRAG_BIT_WPOS));
 950    GLuint index = 0;
 951
 952    if (INTEL_DEBUG & DEBUG_STATE)
 953       fprintf(stderr, "\n%s\n", __FUNCTION__);
 954
 955    if ((flags & (ANY_FALLBACK_FLAGS | ANY_RASTER_FLAGS)) || have_wpos) {
 956
 957       if (flags & ANY_RASTER_FLAGS) {
 958          if (flags & DD_TRI_LIGHT_TWOSIDE)
 959             index |= INTEL_TWOSIDE_BIT;
 960          if (flags & DD_TRI_OFFSET)
 961             index |= INTEL_OFFSET_BIT;
 962          if (flags & DD_TRI_UNFILLED)
 963             index |= INTEL_UNFILLED_BIT;
 964       }
 965
 966       if (have_wpos) {
 967          intel->draw_point = intel_wpos_point;
 968          intel->draw_line = intel_wpos_line;
 969          intel->draw_tri = intel_wpos_triangle;
 970
 971          /* Make sure these get called:
 972           */
 973          index |= INTEL_FALLBACK_BIT;
 974       }
 975       else {
 976          intel->draw_point = intel_draw_point;
 977          intel->draw_line = intel_draw_line;
 978          intel->draw_tri = intel_draw_triangle;
 979       }
 980
 981       /* Hook in fallbacks for specific primitives.
 982        */
 983       if (flags & ANY_FALLBACK_FLAGS) {
 984          if (flags & DD_LINE_STIPPLE)
 985             intel->draw_line = intel_fallback_line;
 986
 987          if ((flags & DD_TRI_STIPPLE) && !intel->hw_stipple)
 988             intel->draw_tri = intel_fallback_tri;
 989
 990          if (flags & DD_TRI_SMOOTH) {
 991             if (intel->conformance_mode > 0)
 992                intel->draw_tri = intel_fallback_tri;
 993          }
 994
 995          if (flags & DD_POINT_ATTEN) {
 996             if (0)
 997                intel->draw_point = intel_atten_point;
 998             else
 999                intel->draw_point = intel_fallback_point;
1000          }
1001
1002          if (flags & DD_POINT_SMOOTH) {
1003             if (intel->conformance_mode > 0)
1004                intel->draw_point = intel_fallback_point;
1005          }
1006
1007          index |= INTEL_FALLBACK_BIT;
1008       }
1009    }
1010
1011    if (intel->RenderIndex != index) {
1012       intel->RenderIndex = index;
1013
1014       tnl->Driver.Render.Points = rast_tab[index].points;
1015       tnl->Driver.Render.Line = rast_tab[index].line;
1016       tnl->Driver.Render.Triangle = rast_tab[index].triangle;
1017       tnl->Driver.Render.Quad = rast_tab[index].quad;
1018
1019       if (index == 0) {
1020          tnl->Driver.Render.PrimTabVerts = intel_render_tab_verts;
1021          tnl->Driver.Render.PrimTabElts = intel_render_tab_elts;
1022          tnl->Driver.Render.ClippedLine = line; /* from tritmp.h */
1023          tnl->Driver.Render.ClippedPolygon = intelFastRenderClippedPoly;
1024       }
1025       else {
1026          tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
1027          tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
1028          tnl->Driver.Render.ClippedLine = intelRenderClippedLine;
1029          tnl->Driver.Render.ClippedPolygon = intelRenderClippedPoly;
1030       }
1031    }
1032 }
1033
1034 static const GLenum reduced_prim[GL_POLYGON + 1] = {
1035    GL_POINTS,
1036    GL_LINES,
1037    GL_LINES,
1038    GL_LINES,
1039    GL_TRIANGLES,
1040    GL_TRIANGLES,
1041    GL_TRIANGLES,
1042    GL_TRIANGLES,
1043    GL_TRIANGLES,
1044    GL_TRIANGLES
1045 };
1046
1047
1048 /**********************************************************************/
1049 /*                 High level hooks for t_vb_render.c                 */
1050 /**********************************************************************/
1051
1052
1053
1054
1055 static void
1056 intelRunPipeline(GLcontext * ctx)
1057 {
1058    struct intel_context *intel = intel_context(ctx);
1059
1060    _mesa_lock_context_textures(ctx);
1061
1062    if (ctx->NewState)
1063       _mesa_update_state_locked(ctx);
1064
1065    if (intel->NewGLState) {
1066       if (intel->NewGLState & _NEW_TEXTURE) {
1067          intel->vtbl.update_texture_state(intel);
1068       }
1069
1070       if (!intel->Fallback) {
1071          if (intel->NewGLState & _INTEL_NEW_RENDERSTATE)
1072             intelChooseRenderState(ctx);
1073       }
1074
1075       intel->NewGLState = 0;
1076    }
1077
1078    intel_map_vertex_shader_textures(ctx);
1079    _tnl_run_pipeline(ctx);
1080    intel_unmap_vertex_shader_textures(ctx);
1081
1082    _mesa_unlock_context_textures(ctx);
1083 }
1084
1085 static void
1086 intelRenderStart(GLcontext * ctx)
1087 {
1088    struct intel_context *intel = intel_context(ctx);
1089
1090    intel_check_front_buffer_rendering(intel);
1091    intel->vtbl.render_start(intel_context(ctx));
1092    intel->vtbl.emit_state(intel);
1093 }
1094
1095 static void
1096 intelRenderFinish(GLcontext * ctx)
1097 {
1098    struct intel_context *intel = intel_context(ctx);
1099
1100    if (intel->RenderIndex & INTEL_FALLBACK_BIT)
1101       _swrast_flush(ctx);
1102
1103    INTEL_FIREVERTICES(intel);
1104 }
1105
1106
1107
1108
1109  /* System to flush dma and emit state changes based on the rasterized
1110   * primitive.
1111   */
1112 static void
1113 intelRasterPrimitive(GLcontext * ctx, GLenum rprim, GLuint hwprim)
1114 {
1115    struct intel_context *intel = intel_context(ctx);
1116
1117    if (0)
1118       fprintf(stderr, "%s %s %x\n", __FUNCTION__,
1119               _mesa_lookup_enum_by_nr(rprim), hwprim);
1120
1121    intel->vtbl.reduced_primitive_state(intel, rprim);
1122
1123    /* Start a new primitive.  Arrange to have it flushed later on.
1124     */
1125    if (hwprim != intel->prim.primitive) {
1126       INTEL_FIREVERTICES(intel);
1127
1128       intel_set_prim(intel, hwprim);
1129    }
1130 }
1131
1132
1133  /*
1134   */
1135 static void
1136 intelRenderPrimitive(GLcontext * ctx, GLenum prim)
1137 {
1138    struct intel_context *intel = intel_context(ctx);
1139
1140    if (0)
1141       fprintf(stderr, "%s %s\n", __FUNCTION__, _mesa_lookup_enum_by_nr(prim));
1142
1143    /* Let some clipping routines know which primitive they're dealing
1144     * with.
1145     */
1146    intel->render_primitive = prim;
1147
1148    /* Shortcircuit this when called from t_dd_rendertmp.h for unfilled
1149     * triangles.  The rasterized primitive will always be reset by
1150     * lower level functions in that case, potentially pingponging the
1151     * state:
1152     */
1153    if (reduced_prim[prim] == GL_TRIANGLES &&
1154        (ctx->_TriangleCaps & DD_TRI_UNFILLED))
1155       return;
1156
1157    /* Set some primitive-dependent state and Start? a new primitive.
1158     */
1159    intelRasterPrimitive(ctx, reduced_prim[prim], hw_prim[prim]);
1160 }
1161
1162
1163  /**********************************************************************/
1164  /*           Transition to/from hardware rasterization.               */
1165  /**********************************************************************/
1166
1167 static char *fallbackStrings[] = {
1168    [0] = "Draw buffer",
1169    [1] = "Read buffer",
1170    [2] = "Depth buffer",
1171    [3] = "Stencil buffer",
1172    [4] = "User disable",
1173    [5] = "Render mode",
1174
1175    [12] = "Texture",
1176    [13] = "Color mask",
1177    [14] = "Stencil",
1178    [15] = "Stipple",
1179    [16] = "Program",
1180    [17] = "Logic op",
1181    [18] = "Smooth polygon",
1182    [19] = "Smooth point",
1183 };
1184
1185
1186 static char *
1187 getFallbackString(GLuint bit)
1188 {
1189    int i = 0;
1190    while (bit > 1) {
1191       i++;
1192       bit >>= 1;
1193    }
1194    return fallbackStrings[i];
1195 }
1196
1197
1198
1199 /**
1200  * Enable/disable a fallback flag.
1201  * \param bit  one of INTEL_FALLBACK_x flags.
1202  */
1203 void
1204 intelFallback(struct intel_context *intel, GLbitfield bit, GLboolean mode)
1205 {
1206    GLcontext *ctx = &intel->ctx;
1207    TNLcontext *tnl = TNL_CONTEXT(ctx);
1208    const GLbitfield oldfallback = intel->Fallback;
1209
1210    if (mode) {
1211       intel->Fallback |= bit;
1212       if (oldfallback == 0) {
1213          intelFlush(ctx);
1214          if (INTEL_DEBUG & DEBUG_FALLBACKS)
1215             fprintf(stderr, "ENTER FALLBACK %x: %s\n",
1216                     bit, getFallbackString(bit));
1217          _swsetup_Wakeup(ctx);
1218          intel->RenderIndex = ~0;
1219       }
1220    }
1221    else {
1222       intel->Fallback &= ~bit;
1223       if (oldfallback == bit) {
1224          _swrast_flush(ctx);
1225          if (INTEL_DEBUG & DEBUG_FALLBACKS)
1226             fprintf(stderr, "LEAVE FALLBACK %s\n", getFallbackString(bit));
1227          tnl->Driver.Render.Start = intelRenderStart;
1228          tnl->Driver.Render.PrimitiveNotify = intelRenderPrimitive;
1229          tnl->Driver.Render.Finish = intelRenderFinish;
1230          tnl->Driver.Render.BuildVertices = _tnl_build_vertices;
1231          tnl->Driver.Render.CopyPV = _tnl_copy_pv;
1232          tnl->Driver.Render.Interp = _tnl_interp;
1233
1234          _tnl_invalidate_vertex_state(ctx, ~0);
1235          _tnl_invalidate_vertices(ctx, ~0);
1236          _tnl_install_attrs(ctx,
1237                             intel->vertex_attrs,
1238                             intel->vertex_attr_count,
1239                             intel->ViewportMatrix.m, 0);
1240
1241          intel->NewGLState |= _INTEL_NEW_RENDERSTATE;
1242       }
1243    }
1244 }
1245
1246 union fi
1247 {
1248    GLfloat f;
1249    GLint i;
1250 };
1251
1252 /**********************************************************************/
1253 /*                            Initialization.                         */
1254 /**********************************************************************/
1255
1256
1257 void
1258 intelInitTriFuncs(GLcontext * ctx)
1259 {
1260    TNLcontext *tnl = TNL_CONTEXT(ctx);
1261    static int firsttime = 1;
1262
1263    if (firsttime) {
1264       init_rast_tab();
1265       firsttime = 0;
1266    }
1267
1268    tnl->Driver.RunPipeline = intelRunPipeline;
1269    tnl->Driver.Render.Start = intelRenderStart;
1270    tnl->Driver.Render.Finish = intelRenderFinish;
1271    tnl->Driver.Render.PrimitiveNotify = intelRenderPrimitive;
1272    tnl->Driver.Render.ResetLineStipple = _swrast_ResetLineStipple;
1273    tnl->Driver.Render.BuildVertices = _tnl_build_vertices;
1274    tnl->Driver.Render.CopyPV = _tnl_copy_pv;
1275    tnl->Driver.Render.Interp = _tnl_interp;
1276 }