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 #include "main/fbobject.h"
  42
  43 #include "swrast/swrast.h"
  44 #include "swrast_setup/swrast_setup.h"
  45 #include "tnl/t_context.h"
  46 #include "tnl/t_pipeline.h"
  47 #include "tnl/t_vertex.h"
  48
  49 #include "intel_screen.h"
  50 #include "intel_context.h"
  51 #include "intel_tris.h"
  52 #include "intel_batchbuffer.h"
  53 #include "intel_buffers.h"
  54 #include "intel_reg.h"
  55 #include "intel_span.h"
  56 #include "i830_context.h"
  57 #include "i830_reg.h"
  58 #include "i915_context.h"
  59
  60 static void intelRenderPrimitive(struct gl_context * ctx, GLenum prim);
  61 static void intelRasterPrimitive(struct gl_context * 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.used - intel->prim.start_ptr;
  68
  69    assert(intel->prim.primitive != ~0);
  70
  71 /*    printf("/\n"); */
  72
  73    if (used < 2)
  74       goto do_discard;
  75
  76    intel->batch.map[intel->prim.start_ptr] =
  77       _3DPRIMITIVE | intel->prim.primitive | (used - 2);
  78
  79    goto finished;
  80
  81  do_discard:
  82    intel->batch.used = intel->prim.start_ptr;
  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 = true;
  97
  98    /*printf("%s *", __progname);*/
  99
 100    /* Emit a slot which will be filled with the inline primitive
 101     * command later.
 102     */
 103    BEGIN_BATCH(1);
 104
 105    intel->prim.start_ptr = intel->batch.used;
 106    intel->prim.primitive = prim;
 107    intel->prim.flush = intel_flush_inline_primitive;
 108
 109    OUT_BATCH(0);
 110    ADVANCE_BATCH();
 111
 112    intel->no_batch_wrap = false;
 113 /*    printf(">"); */
 114 }
 115
 116 static void intel_wrap_inline(struct intel_context *intel)
 117 {
 118    GLuint prim = intel->prim.primitive;
 119
 120    intel_flush_inline_primitive(intel);
 121    intel_batchbuffer_flush(intel);
 122    intel_start_inline(intel, prim);  /* ??? */
 123 }
 124
 125 static GLuint *intel_extend_inline(struct intel_context *intel, GLuint dwords)
 126 {
 127    GLuint *ptr;
 128
 129    assert(intel->prim.flush == intel_flush_inline_primitive);
 130
 131    if (intel_batchbuffer_space(intel) < dwords * sizeof(GLuint))
 132       intel_wrap_inline(intel);
 133
 134 /*    printf("."); */
 135
 136    intel->vtbl.assert_not_dirty(intel);
 137
 138    ptr = intel->batch.map + intel->batch.used;
 139    intel->batch.used += dwords;
 140
 141    return ptr;
 142 }
 143
 144 /** Sets the primitive type for a primitive sequence, flushing as needed. */
 145 void intel_set_prim(struct intel_context *intel, uint32_t prim)
 146 {
 147    /* if we have no VBOs */
 148
 149    if (intel->intelScreen->no_vbo) {
 150       intel_start_inline(intel, prim);
 151       return;
 152    }
 153    if (prim != intel->prim.primitive) {
 154       INTEL_FIREVERTICES(intel);
 155       intel->prim.primitive = prim;
 156    }
 157 }
 158
 159 /** Returns mapped VB space for the given number of vertices */
 160 uint32_t *intel_get_prim_space(struct intel_context *intel, unsigned int count)
 161 {
 162    uint32_t *addr;
 163
 164    if (intel->intelScreen->no_vbo) {
 165       return intel_extend_inline(intel, count * intel->vertex_size);
 166    }
 167
 168    /* Check for space in the existing VB */
 169    if (intel->prim.vb_bo == NULL ||
 170        (intel->prim.current_offset +
 171         count * intel->vertex_size * 4) > INTEL_VB_SIZE ||
 172        (intel->prim.count + count) >= (1 << 16)) {
 173       /* Flush existing prim if any */
 174       INTEL_FIREVERTICES(intel);
 175
 176       intel_finish_vb(intel);
 177
 178       /* Start a new VB */
 179       if (intel->prim.vb == NULL)
 180          intel->prim.vb = malloc(INTEL_VB_SIZE);
 181       intel->prim.vb_bo = drm_intel_bo_alloc(intel->bufmgr, "vb",
 182                                              INTEL_VB_SIZE, 4);
 183       intel->prim.start_offset = 0;
 184       intel->prim.current_offset = 0;
 185    }
 186
 187    intel->prim.flush = intel_flush_prim;
 188
 189    addr = (uint32_t *)(intel->prim.vb + intel->prim.current_offset);
 190    intel->prim.current_offset += intel->vertex_size * 4 * count;
 191    intel->prim.count += count;
 192
 193    return addr;
 194 }
 195
 196 /** Dispatches the accumulated primitive to the batchbuffer. */
 197 void intel_flush_prim(struct intel_context *intel)
 198 {
 199    drm_intel_bo *aper_array[2];
 200    drm_intel_bo *vb_bo;
 201    unsigned int offset, count;
 202    BATCH_LOCALS;
 203
 204    /* Must be called after an intel_start_prim. */
 205    assert(intel->prim.primitive != ~0);
 206
 207    if (intel->prim.count == 0)
 208       return;
 209
 210    /* Clear the current prims out of the context state so that a batch flush
 211     * flush triggered by emit_state doesn't loop back to flush_prim again.
 212     */
 213    vb_bo = intel->prim.vb_bo;
 214    drm_intel_bo_reference(vb_bo);
 215    count = intel->prim.count;
 216    intel->prim.count = 0;
 217    offset = intel->prim.start_offset;
 218    intel->prim.start_offset = intel->prim.current_offset;
 219    if (intel->gen < 3)
 220       intel->prim.current_offset = intel->prim.start_offset = ALIGN(intel->prim.start_offset, 128);
 221    intel->prim.flush = NULL;
 222
 223    intel->vtbl.emit_state(intel);
 224
 225    aper_array[0] = intel->batch.bo;
 226    aper_array[1] = vb_bo;
 227    if (dri_bufmgr_check_aperture_space(aper_array, 2)) {
 228       intel_batchbuffer_flush(intel);
 229       intel->vtbl.emit_state(intel);
 230    }
 231
 232    /* Ensure that we don't start a new batch for the following emit, which
 233     * depends on the state just emitted. emit_state should be making sure we
 234     * have the space for this.
 235     */
 236    intel->no_batch_wrap = true;
 237
 238    if (intel->always_flush_cache) {
 239       intel_batchbuffer_emit_mi_flush(intel);
 240    }
 241
 242 #if 0
 243    printf("emitting %d..%d=%d vertices size %d\n", offset,
 244           intel->prim.current_offset, count,
 245           intel->vertex_size * 4);
 246 #endif
 247
 248    if (intel->gen >= 3) {
 249       struct i915_context *i915 = i915_context(&intel->ctx);
 250       unsigned int cmd = 0, len = 0;
 251
 252       if (vb_bo != i915->current_vb_bo) {
 253          cmd |= I1_LOAD_S(0);
 254          len++;
 255       }
 256
 257       if (intel->vertex_size != i915->current_vertex_size) {
 258          cmd |= I1_LOAD_S(1);
 259          len++;
 260       }
 261       if (len)
 262          len++;
 263
 264       BEGIN_BATCH(2+len);
 265       if (cmd)
 266          OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 | cmd | (len - 2));
 267       if (vb_bo != i915->current_vb_bo) {
 268          OUT_RELOC(vb_bo, I915_GEM_DOMAIN_VERTEX, 0, 0);
 269          i915->current_vb_bo = vb_bo;
 270       }
 271       if (intel->vertex_size != i915->current_vertex_size) {
 272          OUT_BATCH((intel->vertex_size << S1_VERTEX_WIDTH_SHIFT) |
 273                    (intel->vertex_size << S1_VERTEX_PITCH_SHIFT));
 274          i915->current_vertex_size = intel->vertex_size;
 275       }
 276       OUT_BATCH(_3DPRIMITIVE |
 277                 PRIM_INDIRECT |
 278                 PRIM_INDIRECT_SEQUENTIAL |
 279                 intel->prim.primitive |
 280                 count);
 281       OUT_BATCH(offset / (intel->vertex_size * 4));
 282       ADVANCE_BATCH();
 283    } else {
 284       struct i830_context *i830 = i830_context(&intel->ctx);
 285
 286       BEGIN_BATCH(5);
 287       OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 |
 288                 I1_LOAD_S(0) | I1_LOAD_S(2) | 1);
 289       /* S0 */
 290       assert((offset & ~S0_VB_OFFSET_MASK_830) == 0);
 291       OUT_RELOC(vb_bo, I915_GEM_DOMAIN_VERTEX, 0,
 292                 offset | (intel->vertex_size << S0_VB_PITCH_SHIFT_830) |
 293                 S0_VB_ENABLE_830);
 294       /* S2
 295        * This is somewhat unfortunate -- VB width is tied up with
 296        * vertex format data that we've already uploaded through
 297        * _3DSTATE_VFT[01]_CMD.  We may want to replace emits of VFT state with
 298        * STATE_IMMEDIATE_1 like this to avoid duplication.
 299        */
 300       OUT_BATCH((i830->state.Ctx[I830_CTXREG_VF] & VFT0_TEX_COUNT_MASK) >>
 301                 VFT0_TEX_COUNT_SHIFT << S2_TEX_COUNT_SHIFT_830 |
 302                 (i830->state.Ctx[I830_CTXREG_VF2] << 16) |
 303                 intel->vertex_size << S2_VERTEX_0_WIDTH_SHIFT_830);
 304
 305       OUT_BATCH(_3DPRIMITIVE |
 306                 PRIM_INDIRECT |
 307                 PRIM_INDIRECT_SEQUENTIAL |
 308                 intel->prim.primitive |
 309                 count);
 310       OUT_BATCH(0); /* Beginning vertex index */
 311       ADVANCE_BATCH();
 312    }
 313
 314    if (intel->always_flush_cache) {
 315       intel_batchbuffer_emit_mi_flush(intel);
 316    }
 317
 318    intel->no_batch_wrap = false;
 319
 320    drm_intel_bo_unreference(vb_bo);
 321 }
 322
 323 /**
 324  * Uploads the locally-accumulated VB into the buffer object.
 325  *
 326  * This avoids us thrashing the cachelines in and out as the buffer gets
 327  * filled, dispatched, then reused as the hardware completes rendering from it,
 328  * and also lets us clflush less if we dispatch with a partially-filled VB.
 329  *
 330  * This is called normally from get_space when we're finishing a BO, but also
 331  * at batch flush time so that we don't try accessing the contents of a
 332  * just-dispatched buffer.
 333  */
 334 void intel_finish_vb(struct intel_context *intel)
 335 {
 336    if (intel->prim.vb_bo == NULL)
 337       return;
 338
 339    drm_intel_bo_subdata(intel->prim.vb_bo, 0, intel->prim.start_offset,
 340                         intel->prim.vb);
 341    drm_intel_bo_unreference(intel->prim.vb_bo);
 342    intel->prim.vb_bo = NULL;
 343 }
 344
 345 /***********************************************************************
 346  *                    Emit primitives as inline vertices               *
 347  ***********************************************************************/
 348
 349 #ifdef __i386__
 350 #define COPY_DWORDS( j, vb, vertsize, v )                       \
 351 do {                                                            \
 352    int __tmp;                                                   \
 353    __asm__ __volatile__( "rep ; movsl"                          \
 354                          : "=%c" (j), "=D" (vb), "=S" (__tmp)   \
 355                          : "0" (vertsize),                      \
 356                          "D" ((long)vb),                        \
 357                          "S" ((long)v) );                       \
 358 } while (0)
 359 #else
 360 #define COPY_DWORDS( j, vb, vertsize, v )       \
 361 do {                                            \
 362    for ( j = 0 ; j < vertsize ; j++ ) {         \
 363       vb[j] = ((GLuint *)v)[j];                 \
 364    }                                            \
 365    vb += vertsize;                              \
 366 } while (0)
 367 #endif
 368
 369 static void
 370 intel_draw_quad(struct intel_context *intel,
 371                 intelVertexPtr v0,
 372                 intelVertexPtr v1, intelVertexPtr v2, intelVertexPtr v3)
 373 {
 374    GLuint vertsize = intel->vertex_size;
 375    GLuint *vb = intel_get_prim_space(intel, 6);
 376    int j;
 377
 378    COPY_DWORDS(j, vb, vertsize, v0);
 379    COPY_DWORDS(j, vb, vertsize, v1);
 380
 381    /* If smooth shading, draw like a trifan which gives better
 382     * rasterization.  Otherwise draw as two triangles with provoking
 383     * vertex in third position as required for flat shading.
 384     */
 385    if (intel->ctx.Light.ShadeModel == GL_FLAT) {
 386       COPY_DWORDS(j, vb, vertsize, v3);
 387       COPY_DWORDS(j, vb, vertsize, v1);
 388    }
 389    else {
 390       COPY_DWORDS(j, vb, vertsize, v2);
 391       COPY_DWORDS(j, vb, vertsize, v0);
 392    }
 393
 394    COPY_DWORDS(j, vb, vertsize, v2);
 395    COPY_DWORDS(j, vb, vertsize, v3);
 396 }
 397
 398 static void
 399 intel_draw_triangle(struct intel_context *intel,
 400                     intelVertexPtr v0, intelVertexPtr v1, intelVertexPtr v2)
 401 {
 402    GLuint vertsize = intel->vertex_size;
 403    GLuint *vb = intel_get_prim_space(intel, 3);
 404    int j;
 405
 406    COPY_DWORDS(j, vb, vertsize, v0);
 407    COPY_DWORDS(j, vb, vertsize, v1);
 408    COPY_DWORDS(j, vb, vertsize, v2);
 409 }
 410
 411
 412 static void
 413 intel_draw_line(struct intel_context *intel,
 414                 intelVertexPtr v0, intelVertexPtr v1)
 415 {
 416    GLuint vertsize = intel->vertex_size;
 417    GLuint *vb = intel_get_prim_space(intel, 2);
 418    int j;
 419
 420    COPY_DWORDS(j, vb, vertsize, v0);
 421    COPY_DWORDS(j, vb, vertsize, v1);
 422 }
 423
 424
 425 static void
 426 intel_draw_point(struct intel_context *intel, intelVertexPtr v0)
 427 {
 428    GLuint vertsize = intel->vertex_size;
 429    GLuint *vb = intel_get_prim_space(intel, 1);
 430    int j;
 431
 432    /* Adjust for sub pixel position -- still required for conform. */
 433    *(float *) &vb[0] = v0->v.x;
 434    *(float *) &vb[1] = v0->v.y;
 435    for (j = 2; j < vertsize; j++)
 436       vb[j] = v0->ui[j];
 437 }
 438
 439
 440
 441 /***********************************************************************
 442  *                Fixup for ARB_point_parameters                       *
 443  ***********************************************************************/
 444
 445 /* Currently not working - VERT_ATTRIB_POINTSIZE isn't correctly
 446  * represented in the fragment program InputsRead field.
 447  */
 448 static void
 449 intel_atten_point(struct intel_context *intel, intelVertexPtr v0)
 450 {
 451    struct gl_context *ctx = &intel->ctx;
 452    GLfloat psz[4], col[4], restore_psz, restore_alpha;
 453
 454    _tnl_get_attr(ctx, v0, _TNL_ATTRIB_POINTSIZE, psz);
 455    _tnl_get_attr(ctx, v0, _TNL_ATTRIB_COLOR0, col);
 456
 457    restore_psz = psz[0];
 458    restore_alpha = col[3];
 459
 460    if (psz[0] >= ctx->Point.Threshold) {
 461       psz[0] = MIN2(psz[0], ctx->Point.MaxSize);
 462    }
 463    else {
 464       GLfloat dsize = psz[0] / ctx->Point.Threshold;
 465       psz[0] = MAX2(ctx->Point.Threshold, ctx->Point.MinSize);
 466       col[3] *= dsize * dsize;
 467    }
 468
 469    if (psz[0] < 1.0)
 470       psz[0] = 1.0;
 471
 472    if (restore_psz != psz[0] || restore_alpha != col[3]) {
 473       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_POINTSIZE, psz);
 474       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_COLOR0, col);
 475
 476       intel_draw_point(intel, v0);
 477
 478       psz[0] = restore_psz;
 479       col[3] = restore_alpha;
 480
 481       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_POINTSIZE, psz);
 482       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_COLOR0, col);
 483    }
 484    else
 485       intel_draw_point(intel, v0);
 486 }
 487
 488
 489
 490
 491
 492 /***********************************************************************
 493  *                Fixup for I915 WPOS texture coordinate                *
 494  ***********************************************************************/
 495
 496 static void
 497 intel_emit_fragcoord(struct intel_context *intel, intelVertexPtr v)
 498 {
 499    struct gl_context *ctx = &intel->ctx;
 500    struct gl_framebuffer *fb = ctx->DrawBuffer;
 501    GLuint offset = intel->wpos_offset;
 502    float *vertex_position = (float *)v;
 503    float *fragcoord = (float *)((char *)v + offset);
 504
 505    fragcoord[0] = vertex_position[0];
 506
 507    if (_mesa_is_user_fbo(fb))
 508       fragcoord[1] = vertex_position[1];
 509    else
 510       fragcoord[1] = fb->Height - vertex_position[1];
 511
 512    fragcoord[2] = vertex_position[2];
 513    fragcoord[3] = vertex_position[3];
 514 }
 515
 516 static void
 517 intel_wpos_triangle(struct intel_context *intel,
 518                     intelVertexPtr v0, intelVertexPtr v1, intelVertexPtr v2)
 519 {
 520    intel_emit_fragcoord(intel, v0);
 521    intel_emit_fragcoord(intel, v1);
 522    intel_emit_fragcoord(intel, v2);
 523
 524    intel_draw_triangle(intel, v0, v1, v2);
 525 }
 526
 527
 528 static void
 529 intel_wpos_line(struct intel_context *intel,
 530                 intelVertexPtr v0, intelVertexPtr v1)
 531 {
 532    intel_emit_fragcoord(intel, v0);
 533    intel_emit_fragcoord(intel, v1);
 534    intel_draw_line(intel, v0, v1);
 535 }
 536
 537
 538 static void
 539 intel_wpos_point(struct intel_context *intel, intelVertexPtr v0)
 540 {
 541    intel_emit_fragcoord(intel, v0);
 542    intel_draw_point(intel, v0);
 543 }
 544
 545
 546
 547
 548
 549
 550 /***********************************************************************
 551  *          Macros for t_dd_tritmp.h to draw basic primitives          *
 552  ***********************************************************************/
 553
 554 #define TRI( a, b, c )                          \
 555 do {                                            \
 556    if (DO_FALLBACK)                             \
 557       intel->draw_tri( intel, a, b, c );        \
 558    else                                         \
 559       intel_draw_triangle( intel, a, b, c );    \
 560 } while (0)
 561
 562 #define QUAD( a, b, c, d )                      \
 563 do {                                            \
 564    if (DO_FALLBACK) {                           \
 565       intel->draw_tri( intel, a, b, d );        \
 566       intel->draw_tri( intel, b, c, d );        \
 567    } else                                       \
 568       intel_draw_quad( intel, a, b, c, d );     \
 569 } while (0)
 570
 571 #define LINE( v0, v1 )                          \
 572 do {                                            \
 573    if (DO_FALLBACK)                             \
 574       intel->draw_line( intel, v0, v1 );        \
 575    else                                         \
 576       intel_draw_line( intel, v0, v1 );         \
 577 } while (0)
 578
 579 #define POINT( v0 )                             \
 580 do {                                            \
 581    if (DO_FALLBACK)                             \
 582       intel->draw_point( intel, v0 );           \
 583    else                                         \
 584       intel_draw_point( intel, v0 );            \
 585 } while (0)
 586
 587
 588 /***********************************************************************
 589  *              Build render functions from dd templates               *
 590  ***********************************************************************/
 591
 592 #define INTEL_OFFSET_BIT        0x01
 593 #define INTEL_TWOSIDE_BIT       0x02
 594 #define INTEL_UNFILLED_BIT      0x04
 595 #define INTEL_FALLBACK_BIT      0x08
 596 #define INTEL_MAX_TRIFUNC       0x10
 597
 598
 599 static struct
 600 {
 601    tnl_points_func points;
 602    tnl_line_func line;
 603    tnl_triangle_func triangle;
 604    tnl_quad_func quad;
 605 } rast_tab[INTEL_MAX_TRIFUNC];
 606
 607
 608 #define DO_FALLBACK (IND & INTEL_FALLBACK_BIT)
 609 #define DO_OFFSET   (IND & INTEL_OFFSET_BIT)
 610 #define DO_UNFILLED (IND & INTEL_UNFILLED_BIT)
 611 #define DO_TWOSIDE  (IND & INTEL_TWOSIDE_BIT)
 612 #define DO_FLAT      0
 613 #define DO_TRI       1
 614 #define DO_QUAD      1
 615 #define DO_LINE      1
 616 #define DO_POINTS    1
 617 #define DO_FULL_QUAD 1
 618
 619 #define HAVE_SPEC         1
 620 #define HAVE_BACK_COLORS  0
 621 #define HAVE_HW_FLATSHADE 1
 622 #define VERTEX            intelVertex
 623 #define TAB               rast_tab
 624
 625 /* Only used to pull back colors into vertices (ie, we know color is
 626  * floating point).
 627  */
 628 #define INTEL_COLOR( dst, src )                         \
 629 do {                                                    \
 630    UNCLAMPED_FLOAT_TO_UBYTE((dst)[0], (src)[2]);        \
 631    UNCLAMPED_FLOAT_TO_UBYTE((dst)[1], (src)[1]);        \
 632    UNCLAMPED_FLOAT_TO_UBYTE((dst)[2], (src)[0]);        \
 633    UNCLAMPED_FLOAT_TO_UBYTE((dst)[3], (src)[3]);        \
 634 } while (0)
 635
 636 #define INTEL_SPEC( dst, src )                          \
 637 do {                                                    \
 638    UNCLAMPED_FLOAT_TO_UBYTE((dst)[0], (src)[2]);        \
 639    UNCLAMPED_FLOAT_TO_UBYTE((dst)[1], (src)[1]);        \
 640    UNCLAMPED_FLOAT_TO_UBYTE((dst)[2], (src)[0]);        \
 641 } while (0)
 642
 643
 644 #define DEPTH_SCALE intel->polygon_offset_scale
 645 #define UNFILLED_TRI unfilled_tri
 646 #define UNFILLED_QUAD unfilled_quad
 647 #define VERT_X(_v) _v->v.x
 648 #define VERT_Y(_v) _v->v.y
 649 #define VERT_Z(_v) _v->v.z
 650 #define AREA_IS_CCW( a ) (a > 0)
 651 #define GET_VERTEX(e) (intel->verts + (e * intel->vertex_size * sizeof(GLuint)))
 652
 653 #define VERT_SET_RGBA( v, c )    if (coloroffset) INTEL_COLOR( v->ub4[coloroffset], c )
 654 #define VERT_COPY_RGBA( v0, v1 ) if (coloroffset) v0->ui[coloroffset] = v1->ui[coloroffset]
 655 #define VERT_SAVE_RGBA( idx )    if (coloroffset) color[idx] = v[idx]->ui[coloroffset]
 656 #define VERT_RESTORE_RGBA( idx ) if (coloroffset) v[idx]->ui[coloroffset] = color[idx]
 657
 658 #define VERT_SET_SPEC( v, c )    if (specoffset) INTEL_SPEC( v->ub4[specoffset], c )
 659 #define VERT_COPY_SPEC( v0, v1 ) if (specoffset) COPY_3V(v0->ub4[specoffset], v1->ub4[specoffset])
 660 #define VERT_SAVE_SPEC( idx )    if (specoffset) spec[idx] = v[idx]->ui[specoffset]
 661 #define VERT_RESTORE_SPEC( idx ) if (specoffset) v[idx]->ui[specoffset] = spec[idx]
 662
 663 #define LOCAL_VARS(n)                                                   \
 664    struct intel_context *intel = intel_context(ctx);                    \
 665    GLuint color[n] = { 0, }, spec[n] = { 0, };                          \
 666    GLuint coloroffset = intel->coloroffset;                             \
 667    GLuint specoffset = intel->specoffset;                               \
 668    (void) color; (void) spec; (void) coloroffset; (void) specoffset;
 669
 670
 671 /***********************************************************************
 672  *                Helpers for rendering unfilled primitives            *
 673  ***********************************************************************/
 674
 675 static const GLuint hw_prim[GL_POLYGON + 1] = {
 676    PRIM3D_POINTLIST,
 677    PRIM3D_LINELIST,
 678    PRIM3D_LINELIST,
 679    PRIM3D_LINELIST,
 680    PRIM3D_TRILIST,
 681    PRIM3D_TRILIST,
 682    PRIM3D_TRILIST,
 683    PRIM3D_TRILIST,
 684    PRIM3D_TRILIST,
 685    PRIM3D_TRILIST
 686 };
 687
 688 #define RASTERIZE(x) intelRasterPrimitive( ctx, x, hw_prim[x] )
 689 #define RENDER_PRIMITIVE intel->render_primitive
 690 #define TAG(x) x
 691 #define IND INTEL_FALLBACK_BIT
 692 #include "tnl_dd/t_dd_unfilled.h"
 693 #undef IND
 694
 695 /***********************************************************************
 696  *                      Generate GL render functions                   *
 697  ***********************************************************************/
 698
 699 #define IND (0)
 700 #define TAG(x) x
 701 #include "tnl_dd/t_dd_tritmp.h"
 702
 703 #define IND (INTEL_OFFSET_BIT)
 704 #define TAG(x) x##_offset
 705 #include "tnl_dd/t_dd_tritmp.h"
 706
 707 #define IND (INTEL_TWOSIDE_BIT)
 708 #define TAG(x) x##_twoside
 709 #include "tnl_dd/t_dd_tritmp.h"
 710
 711 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT)
 712 #define TAG(x) x##_twoside_offset
 713 #include "tnl_dd/t_dd_tritmp.h"
 714
 715 #define IND (INTEL_UNFILLED_BIT)
 716 #define TAG(x) x##_unfilled
 717 #include "tnl_dd/t_dd_tritmp.h"
 718
 719 #define IND (INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT)
 720 #define TAG(x) x##_offset_unfilled
 721 #include "tnl_dd/t_dd_tritmp.h"
 722
 723 #define IND (INTEL_TWOSIDE_BIT|INTEL_UNFILLED_BIT)
 724 #define TAG(x) x##_twoside_unfilled
 725 #include "tnl_dd/t_dd_tritmp.h"
 726
 727 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT)
 728 #define TAG(x) x##_twoside_offset_unfilled
 729 #include "tnl_dd/t_dd_tritmp.h"
 730
 731 #define IND (INTEL_FALLBACK_BIT)
 732 #define TAG(x) x##_fallback
 733 #include "tnl_dd/t_dd_tritmp.h"
 734
 735 #define IND (INTEL_OFFSET_BIT|INTEL_FALLBACK_BIT)
 736 #define TAG(x) x##_offset_fallback
 737 #include "tnl_dd/t_dd_tritmp.h"
 738
 739 #define IND (INTEL_TWOSIDE_BIT|INTEL_FALLBACK_BIT)
 740 #define TAG(x) x##_twoside_fallback
 741 #include "tnl_dd/t_dd_tritmp.h"
 742
 743 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT|INTEL_FALLBACK_BIT)
 744 #define TAG(x) x##_twoside_offset_fallback
 745 #include "tnl_dd/t_dd_tritmp.h"
 746
 747 #define IND (INTEL_UNFILLED_BIT|INTEL_FALLBACK_BIT)
 748 #define TAG(x) x##_unfilled_fallback
 749 #include "tnl_dd/t_dd_tritmp.h"
 750
 751 #define IND (INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT|INTEL_FALLBACK_BIT)
 752 #define TAG(x) x##_offset_unfilled_fallback
 753 #include "tnl_dd/t_dd_tritmp.h"
 754
 755 #define IND (INTEL_TWOSIDE_BIT|INTEL_UNFILLED_BIT|INTEL_FALLBACK_BIT)
 756 #define TAG(x) x##_twoside_unfilled_fallback
 757 #include "tnl_dd/t_dd_tritmp.h"
 758
 759 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT| \
 760              INTEL_FALLBACK_BIT)
 761 #define TAG(x) x##_twoside_offset_unfilled_fallback
 762 #include "tnl_dd/t_dd_tritmp.h"
 763
 764
 765 static void
 766 init_rast_tab(void)
 767 {
 768    init();
 769    init_offset();
 770    init_twoside();
 771    init_twoside_offset();
 772    init_unfilled();
 773    init_offset_unfilled();
 774    init_twoside_unfilled();
 775    init_twoside_offset_unfilled();
 776    init_fallback();
 777    init_offset_fallback();
 778    init_twoside_fallback();
 779    init_twoside_offset_fallback();
 780    init_unfilled_fallback();
 781    init_offset_unfilled_fallback();
 782    init_twoside_unfilled_fallback();
 783    init_twoside_offset_unfilled_fallback();
 784 }
 785
 786
 787 /***********************************************************************
 788  *                    Rasterization fallback helpers                   *
 789  ***********************************************************************/
 790
 791
 792 /* This code is hit only when a mix of accelerated and unaccelerated
 793  * primitives are being drawn, and only for the unaccelerated
 794  * primitives.
 795  */
 796 static void
 797 intel_fallback_tri(struct intel_context *intel,
 798                    intelVertex * v0, intelVertex * v1, intelVertex * v2)
 799 {
 800    struct gl_context *ctx = &intel->ctx;
 801    SWvertex v[3];
 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    _swsetup_Translate(ctx, v2, &v[2]);
 811    intelSpanRenderStart(ctx);
 812    _swrast_Triangle(ctx, &v[0], &v[1], &v[2]);
 813    intelSpanRenderFinish(ctx);
 814 }
 815
 816
 817 static void
 818 intel_fallback_line(struct intel_context *intel,
 819                     intelVertex * v0, intelVertex * v1)
 820 {
 821    struct gl_context *ctx = &intel->ctx;
 822    SWvertex v[2];
 823
 824    if (0)
 825       fprintf(stderr, "\n%s\n", __FUNCTION__);
 826
 827    INTEL_FIREVERTICES(intel);
 828
 829    _swsetup_Translate(ctx, v0, &v[0]);
 830    _swsetup_Translate(ctx, v1, &v[1]);
 831    intelSpanRenderStart(ctx);
 832    _swrast_Line(ctx, &v[0], &v[1]);
 833    intelSpanRenderFinish(ctx);
 834 }
 835
 836 static void
 837 intel_fallback_point(struct intel_context *intel,
 838                      intelVertex * v0)
 839 {
 840    struct gl_context *ctx = &intel->ctx;
 841    SWvertex v[1];
 842
 843    if (0)
 844       fprintf(stderr, "\n%s\n", __FUNCTION__);
 845
 846    INTEL_FIREVERTICES(intel);
 847
 848    _swsetup_Translate(ctx, v0, &v[0]);
 849    intelSpanRenderStart(ctx);
 850    _swrast_Point(ctx, &v[0]);
 851    intelSpanRenderFinish(ctx);
 852 }
 853
 854
 855 /**********************************************************************/
 856 /*               Render unclipped begin/end objects                   */
 857 /**********************************************************************/
 858
 859 #define IND 0
 860 #define V(x) (intelVertex *)(vertptr + ((x)*vertsize*sizeof(GLuint)))
 861 #define RENDER_POINTS( start, count )   \
 862    for ( ; start < count ; start++) POINT( V(ELT(start)) );
 863 #define RENDER_LINE( v0, v1 )         LINE( V(v0), V(v1) )
 864 #define RENDER_TRI(  v0, v1, v2 )     TRI(  V(v0), V(v1), V(v2) )
 865 #define RENDER_QUAD( v0, v1, v2, v3 ) QUAD( V(v0), V(v1), V(v2), V(v3) )
 866 #define INIT(x) intelRenderPrimitive( ctx, x )
 867 #undef LOCAL_VARS
 868 #define LOCAL_VARS                                              \
 869     struct intel_context *intel = intel_context(ctx);                   \
 870     GLubyte *vertptr = (GLubyte *)intel->verts;                 \
 871     const GLuint vertsize = intel->vertex_size;         \
 872     const GLuint * const elt = TNL_CONTEXT(ctx)->vb.Elts;       \
 873     (void) elt;
 874 #define RESET_STIPPLE
 875 #define RESET_OCCLUSION
 876 #define PRESERVE_VB_DEFS
 877 #define ELT(x) x
 878 #define TAG(x) intel_##x##_verts
 879 #include "tnl/t_vb_rendertmp.h"
 880 #undef ELT
 881 #undef TAG
 882 #define TAG(x) intel_##x##_elts
 883 #define ELT(x) elt[x]
 884 #include "tnl/t_vb_rendertmp.h"
 885
 886 /**********************************************************************/
 887 /*                   Render clipped primitives                        */
 888 /**********************************************************************/
 889
 890
 891
 892 static void
 893 intelRenderClippedPoly(struct gl_context * ctx, const GLuint * elts, GLuint n)
 894 {
 895    struct intel_context *intel = intel_context(ctx);
 896    TNLcontext *tnl = TNL_CONTEXT(ctx);
 897    struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
 898    GLuint prim = intel->render_primitive;
 899
 900    /* Render the new vertices as an unclipped polygon.
 901     */
 902    {
 903       GLuint *tmp = VB->Elts;
 904       VB->Elts = (GLuint *) elts;
 905       tnl->Driver.Render.PrimTabElts[GL_POLYGON] (ctx, 0, n,
 906                                                   PRIM_BEGIN | PRIM_END);
 907       VB->Elts = tmp;
 908    }
 909
 910    /* Restore the render primitive
 911     */
 912    if (prim != GL_POLYGON)
 913       tnl->Driver.Render.PrimitiveNotify(ctx, prim);
 914 }
 915
 916 static void
 917 intelRenderClippedLine(struct gl_context * ctx, GLuint ii, GLuint jj)
 918 {
 919    TNLcontext *tnl = TNL_CONTEXT(ctx);
 920
 921    tnl->Driver.Render.Line(ctx, ii, jj);
 922 }
 923
 924 static void
 925 intelFastRenderClippedPoly(struct gl_context * ctx, const GLuint * elts, GLuint n)
 926 {
 927    struct intel_context *intel = intel_context(ctx);
 928    const GLuint vertsize = intel->vertex_size;
 929    GLuint *vb = intel_get_prim_space(intel, (n - 2) * 3);
 930    GLubyte *vertptr = (GLubyte *) intel->verts;
 931    const GLuint *start = (const GLuint *) V(elts[0]);
 932    int i, j;
 933
 934    for (i = 2; i < n; i++) {
 935       COPY_DWORDS(j, vb, vertsize, V(elts[i - 1]));
 936       COPY_DWORDS(j, vb, vertsize, V(elts[i]));
 937       COPY_DWORDS(j, vb, vertsize, start);
 938    }
 939 }
 940
 941 /**********************************************************************/
 942 /*                    Choose render functions                         */
 943 /**********************************************************************/
 944
 945
 946 #define DD_TRI_LIGHT_TWOSIDE (1 << 1)
 947 #define DD_TRI_UNFILLED (1 << 2)
 948 #define DD_TRI_STIPPLE  (1 << 4)
 949 #define DD_TRI_OFFSET   (1 << 5)
 950 #define DD_LINE_STIPPLE (1 << 7)
 951 #define DD_POINT_ATTEN  (1 << 9)
 952
 953 #define ANY_FALLBACK_FLAGS (DD_LINE_STIPPLE | DD_TRI_STIPPLE | DD_POINT_ATTEN)
 954 #define ANY_RASTER_FLAGS (DD_TRI_LIGHT_TWOSIDE | DD_TRI_OFFSET | DD_TRI_UNFILLED)
 955
 956 void
 957 intelChooseRenderState(struct gl_context * ctx)
 958 {
 959    TNLcontext *tnl = TNL_CONTEXT(ctx);
 960    struct intel_context *intel = intel_context(ctx);
 961    GLuint flags =
 962       ((ctx->Light.Enabled &&
 963         ctx->Light.Model.TwoSide) ? DD_TRI_LIGHT_TWOSIDE : 0) |
 964       ((ctx->Polygon.FrontMode != GL_FILL ||
 965         ctx->Polygon.BackMode != GL_FILL) ? DD_TRI_UNFILLED : 0) |
 966       (ctx->Polygon.StippleFlag ? DD_TRI_STIPPLE : 0) |
 967       ((ctx->Polygon.OffsetPoint ||
 968         ctx->Polygon.OffsetLine ||
 969         ctx->Polygon.OffsetFill) ? DD_TRI_OFFSET : 0) |
 970       (ctx->Line.StippleFlag ? DD_LINE_STIPPLE : 0) |
 971       (ctx->Point._Attenuated ? DD_POINT_ATTEN : 0);
 972    const struct gl_fragment_program *fprog = ctx->FragmentProgram._Current;
 973    bool have_wpos = (fprog && (fprog->Base.InputsRead & VARYING_BIT_POS));
 974    GLuint index = 0;
 975
 976    if (INTEL_DEBUG & DEBUG_STATE)
 977       fprintf(stderr, "\n%s\n", __FUNCTION__);
 978
 979    if ((flags & (ANY_FALLBACK_FLAGS | ANY_RASTER_FLAGS)) || have_wpos) {
 980
 981       if (flags & ANY_RASTER_FLAGS) {
 982          if (flags & DD_TRI_LIGHT_TWOSIDE)
 983             index |= INTEL_TWOSIDE_BIT;
 984          if (flags & DD_TRI_OFFSET)
 985             index |= INTEL_OFFSET_BIT;
 986          if (flags & DD_TRI_UNFILLED)
 987             index |= INTEL_UNFILLED_BIT;
 988       }
 989
 990       if (have_wpos) {
 991          intel->draw_point = intel_wpos_point;
 992          intel->draw_line = intel_wpos_line;
 993          intel->draw_tri = intel_wpos_triangle;
 994
 995          /* Make sure these get called:
 996           */
 997          index |= INTEL_FALLBACK_BIT;
 998       }
 999       else {
1000          intel->draw_point = intel_draw_point;
1001          intel->draw_line = intel_draw_line;
1002          intel->draw_tri = intel_draw_triangle;
1003       }
1004
1005       /* Hook in fallbacks for specific primitives.
1006        */
1007       if (flags & ANY_FALLBACK_FLAGS) {
1008          if (flags & DD_LINE_STIPPLE)
1009             intel->draw_line = intel_fallback_line;
1010
1011          if ((flags & DD_TRI_STIPPLE) && !intel->hw_stipple)
1012             intel->draw_tri = intel_fallback_tri;
1013
1014          if (flags & DD_POINT_ATTEN) {
1015             if (0)
1016                intel->draw_point = intel_atten_point;
1017             else
1018                intel->draw_point = intel_fallback_point;
1019          }
1020
1021          index |= INTEL_FALLBACK_BIT;
1022       }
1023    }
1024
1025    if (intel->RenderIndex != index) {
1026       intel->RenderIndex = index;
1027
1028       tnl->Driver.Render.Points = rast_tab[index].points;
1029       tnl->Driver.Render.Line = rast_tab[index].line;
1030       tnl->Driver.Render.Triangle = rast_tab[index].triangle;
1031       tnl->Driver.Render.Quad = rast_tab[index].quad;
1032
1033       if (index == 0) {
1034          tnl->Driver.Render.PrimTabVerts = intel_render_tab_verts;
1035          tnl->Driver.Render.PrimTabElts = intel_render_tab_elts;
1036          tnl->Driver.Render.ClippedLine = line; /* from tritmp.h */
1037          tnl->Driver.Render.ClippedPolygon = intelFastRenderClippedPoly;
1038       }
1039       else {
1040          tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
1041          tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
1042          tnl->Driver.Render.ClippedLine = intelRenderClippedLine;
1043          tnl->Driver.Render.ClippedPolygon = intelRenderClippedPoly;
1044       }
1045    }
1046 }
1047
1048 static const GLenum reduced_prim[GL_POLYGON + 1] = {
1049    GL_POINTS,
1050    GL_LINES,
1051    GL_LINES,
1052    GL_LINES,
1053    GL_TRIANGLES,
1054    GL_TRIANGLES,
1055    GL_TRIANGLES,
1056    GL_TRIANGLES,
1057    GL_TRIANGLES,
1058    GL_TRIANGLES
1059 };
1060
1061
1062 /**********************************************************************/
1063 /*                 High level hooks for t_vb_render.c                 */
1064 /**********************************************************************/
1065
1066
1067
1068
1069 static void
1070 intelRunPipeline(struct gl_context * ctx)
1071 {
1072    struct intel_context *intel = intel_context(ctx);
1073
1074    _mesa_lock_context_textures(ctx);
1075
1076    if (ctx->NewState)
1077       _mesa_update_state_locked(ctx);
1078
1079    /* We need to get this done before we start the pipeline, or a
1080     * change in the INTEL_FALLBACK() of its intel_draw_buffers() call
1081     * while the pipeline is running will result in mismatched swrast
1082     * map/unmaps, and later assertion failures.
1083     */
1084    intel_prepare_render(intel);
1085
1086    if (intel->NewGLState) {
1087       if (intel->NewGLState & _NEW_TEXTURE) {
1088          intel->vtbl.update_texture_state(intel);
1089       }
1090
1091       if (!intel->Fallback) {
1092          if (intel->NewGLState & _INTEL_NEW_RENDERSTATE)
1093             intelChooseRenderState(ctx);
1094       }
1095
1096       intel->NewGLState = 0;
1097    }
1098
1099    intel_map_vertex_shader_textures(ctx);
1100    intel->tnl_pipeline_running = true;
1101    _tnl_run_pipeline(ctx);
1102    intel->tnl_pipeline_running = false;
1103    intel_unmap_vertex_shader_textures(ctx);
1104
1105    _mesa_unlock_context_textures(ctx);
1106 }
1107
1108 static void
1109 intelRenderStart(struct gl_context * ctx)
1110 {
1111    struct intel_context *intel = intel_context(ctx);
1112
1113    intel_check_front_buffer_rendering(intel);
1114    intel->vtbl.render_start(intel_context(ctx));
1115    intel->vtbl.emit_state(intel);
1116 }
1117
1118 static void
1119 intelRenderFinish(struct gl_context * ctx)
1120 {
1121    struct intel_context *intel = intel_context(ctx);
1122
1123    if (intel->RenderIndex & INTEL_FALLBACK_BIT)
1124       _swrast_flush(ctx);
1125
1126    INTEL_FIREVERTICES(intel);
1127 }
1128
1129
1130
1131
1132  /* System to flush dma and emit state changes based on the rasterized
1133   * primitive.
1134   */
1135 static void
1136 intelRasterPrimitive(struct gl_context * ctx, GLenum rprim, GLuint hwprim)
1137 {
1138    struct intel_context *intel = intel_context(ctx);
1139
1140    if (0)
1141       fprintf(stderr, "%s %s %x\n", __FUNCTION__,
1142               _mesa_lookup_enum_by_nr(rprim), hwprim);
1143
1144    intel->vtbl.reduced_primitive_state(intel, rprim);
1145
1146    /* Start a new primitive.  Arrange to have it flushed later on.
1147     */
1148    if (hwprim != intel->prim.primitive) {
1149       INTEL_FIREVERTICES(intel);
1150
1151       intel_set_prim(intel, hwprim);
1152    }
1153 }
1154
1155
1156  /*
1157   */
1158 static void
1159 intelRenderPrimitive(struct gl_context * ctx, GLenum prim)
1160 {
1161    struct intel_context *intel = intel_context(ctx);
1162    GLboolean unfilled = (ctx->Polygon.FrontMode != GL_FILL ||
1163                          ctx->Polygon.BackMode != GL_FILL);
1164
1165    if (0)
1166       fprintf(stderr, "%s %s\n", __FUNCTION__, _mesa_lookup_enum_by_nr(prim));
1167
1168    /* Let some clipping routines know which primitive they're dealing
1169     * with.
1170     */
1171    intel->render_primitive = prim;
1172
1173    /* Shortcircuit this when called for unfilled triangles.  The rasterized
1174     * primitive will always be reset by lower level functions in that case,
1175     * potentially pingponging the state:
1176     */
1177    if (reduced_prim[prim] == GL_TRIANGLES && unfilled)
1178       return;
1179
1180    /* Set some primitive-dependent state and Start? a new primitive.
1181     */
1182    intelRasterPrimitive(ctx, reduced_prim[prim], hw_prim[prim]);
1183 }
1184
1185
1186  /**********************************************************************/
1187  /*           Transition to/from hardware rasterization.               */
1188  /**********************************************************************/
1189
1190 static char *fallbackStrings[] = {
1191    [0] = "Draw buffer",
1192    [1] = "Read buffer",
1193    [2] = "Depth buffer",
1194    [3] = "Stencil buffer",
1195    [4] = "User disable",
1196    [5] = "Render mode",
1197
1198    [12] = "Texture",
1199    [13] = "Color mask",
1200    [14] = "Stencil",
1201    [15] = "Stipple",
1202    [16] = "Program",
1203    [17] = "Logic op",
1204    [18] = "Smooth polygon",
1205    [19] = "Smooth point",
1206    [20] = "point sprite coord origin",
1207    [21] = "depth/color drawing offset",
1208    [22] = "coord replace(SPRITE POINT ENABLE)",
1209 };
1210
1211
1212 static char *
1213 getFallbackString(GLuint bit)
1214 {
1215    int i = 0;
1216    while (bit > 1) {
1217       i++;
1218       bit >>= 1;
1219    }
1220    return fallbackStrings[i];
1221 }
1222
1223
1224
1225 /**
1226  * Enable/disable a fallback flag.
1227  * \param bit  one of INTEL_FALLBACK_x flags.
1228  */
1229 void
1230 intelFallback(struct intel_context *intel, GLbitfield bit, bool mode)
1231 {
1232    struct gl_context *ctx = &intel->ctx;
1233    TNLcontext *tnl = TNL_CONTEXT(ctx);
1234    const GLbitfield oldfallback = intel->Fallback;
1235
1236    if (mode) {
1237       intel->Fallback |= bit;
1238       if (oldfallback == 0) {
1239          assert(!intel->tnl_pipeline_running);
1240
1241          intel_flush(ctx);
1242          if (INTEL_DEBUG & DEBUG_PERF)
1243             fprintf(stderr, "ENTER FALLBACK %x: %s\n",
1244                     bit, getFallbackString(bit));
1245          _swsetup_Wakeup(ctx);
1246          intel->RenderIndex = ~0;
1247       }
1248    }
1249    else {
1250       intel->Fallback &= ~bit;
1251       if (oldfallback == bit) {
1252          assert(!intel->tnl_pipeline_running);
1253
1254          _swrast_flush(ctx);
1255          if (INTEL_DEBUG & DEBUG_PERF)
1256             fprintf(stderr, "LEAVE FALLBACK %s\n", getFallbackString(bit));
1257          tnl->Driver.Render.Start = intelRenderStart;
1258          tnl->Driver.Render.PrimitiveNotify = intelRenderPrimitive;
1259          tnl->Driver.Render.Finish = intelRenderFinish;
1260          tnl->Driver.Render.BuildVertices = _tnl_build_vertices;
1261          tnl->Driver.Render.CopyPV = _tnl_copy_pv;
1262          tnl->Driver.Render.Interp = _tnl_interp;
1263
1264          _tnl_invalidate_vertex_state(ctx, ~0);
1265          _tnl_invalidate_vertices(ctx, ~0);
1266          _tnl_install_attrs(ctx,
1267                             intel->vertex_attrs,
1268                             intel->vertex_attr_count,
1269                             intel->ViewportMatrix.m, 0);
1270
1271          intel->NewGLState |= _INTEL_NEW_RENDERSTATE;
1272       }
1273    }
1274 }
1275
1276 union fi
1277 {
1278    GLfloat f;
1279    GLint i;
1280 };
1281
1282 /**********************************************************************/
1283 /*                            Initialization.                         */
1284 /**********************************************************************/
1285
1286
1287 void
1288 intelInitTriFuncs(struct gl_context * ctx)
1289 {
1290    TNLcontext *tnl = TNL_CONTEXT(ctx);
1291    static int firsttime = 1;
1292
1293    if (firsttime) {
1294       init_rast_tab();
1295       firsttime = 0;
1296    }
1297
1298    tnl->Driver.RunPipeline = intelRunPipeline;
1299    tnl->Driver.Render.Start = intelRenderStart;
1300    tnl->Driver.Render.Finish = intelRenderFinish;
1301    tnl->Driver.Render.PrimitiveNotify = intelRenderPrimitive;
1302    tnl->Driver.Render.ResetLineStipple = _swrast_ResetLineStipple;
1303    tnl->Driver.Render.BuildVertices = _tnl_build_vertices;
1304    tnl->Driver.Render.CopyPV = _tnl_copy_pv;
1305    tnl->Driver.Render.Interp = _tnl_interp;
1306 }