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

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 /** @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 #include "main/state.h"
  43
  44 #include "swrast/swrast.h"
  45 #include "swrast_setup/swrast_setup.h"
  46 #include "tnl/t_context.h"
  47 #include "tnl/t_pipeline.h"
  48 #include "tnl/t_vertex.h"
  49
  50 #include "intel_screen.h"
  51 #include "intel_context.h"
  52 #include "intel_tris.h"
  53 #include "intel_batchbuffer.h"
  54 #include "intel_buffers.h"
  55 #include "intel_reg.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    /* 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 = 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.current_offset = 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 = true;
 235
 236    if (intel->always_flush_cache) {
 237       intel_batchbuffer_emit_mi_flush(intel);
 238    }
 239
 240 #if 0
 241    printf("emitting %d..%d=%d vertices size %d\n", offset,
 242           intel->prim.current_offset, count,
 243           intel->vertex_size * 4);
 244 #endif
 245
 246    if (intel->gen >= 3) {
 247       struct i915_context *i915 = i915_context(&intel->ctx);
 248       unsigned int cmd = 0, len = 0;
 249
 250       if (vb_bo != i915->current_vb_bo) {
 251          cmd |= I1_LOAD_S(0);
 252          len++;
 253       }
 254
 255       if (intel->vertex_size != i915->current_vertex_size) {
 256          cmd |= I1_LOAD_S(1);
 257          len++;
 258       }
 259       if (len)
 260          len++;
 261
 262       BEGIN_BATCH(2+len);
 263       if (cmd)
 264          OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 | cmd | (len - 2));
 265       if (vb_bo != i915->current_vb_bo) {
 266          OUT_RELOC(vb_bo, I915_GEM_DOMAIN_VERTEX, 0, 0);
 267          i915->current_vb_bo = vb_bo;
 268       }
 269       if (intel->vertex_size != i915->current_vertex_size) {
 270          OUT_BATCH((intel->vertex_size << S1_VERTEX_WIDTH_SHIFT) |
 271                    (intel->vertex_size << S1_VERTEX_PITCH_SHIFT));
 272          i915->current_vertex_size = intel->vertex_size;
 273       }
 274       OUT_BATCH(_3DPRIMITIVE |
 275                 PRIM_INDIRECT |
 276                 PRIM_INDIRECT_SEQUENTIAL |
 277                 intel->prim.primitive |
 278                 count);
 279       OUT_BATCH(offset / (intel->vertex_size * 4));
 280       ADVANCE_BATCH();
 281    } else {
 282       struct i830_context *i830 = i830_context(&intel->ctx);
 283
 284       BEGIN_BATCH(5);
 285       OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 |
 286                 I1_LOAD_S(0) | I1_LOAD_S(2) | 1);
 287       /* S0 */
 288       assert((offset & ~S0_VB_OFFSET_MASK_830) == 0);
 289       OUT_RELOC(vb_bo, I915_GEM_DOMAIN_VERTEX, 0,
 290                 offset | (intel->vertex_size << S0_VB_PITCH_SHIFT_830) |
 291                 S0_VB_ENABLE_830);
 292       /* S2
 293        * This is somewhat unfortunate -- VB width is tied up with
 294        * vertex format data that we've already uploaded through
 295        * _3DSTATE_VFT[01]_CMD.  We may want to replace emits of VFT state with
 296        * STATE_IMMEDIATE_1 like this to avoid duplication.
 297        */
 298       OUT_BATCH((i830->state.Ctx[I830_CTXREG_VF] & VFT0_TEX_COUNT_MASK) >>
 299                 VFT0_TEX_COUNT_SHIFT << S2_TEX_COUNT_SHIFT_830 |
 300                 (i830->state.Ctx[I830_CTXREG_VF2] << 16) |
 301                 intel->vertex_size << S2_VERTEX_0_WIDTH_SHIFT_830);
 302
 303       OUT_BATCH(_3DPRIMITIVE |
 304                 PRIM_INDIRECT |
 305                 PRIM_INDIRECT_SEQUENTIAL |
 306                 intel->prim.primitive |
 307                 count);
 308       OUT_BATCH(0); /* Beginning vertex index */
 309       ADVANCE_BATCH();
 310    }
 311
 312    if (intel->always_flush_cache) {
 313       intel_batchbuffer_emit_mi_flush(intel);
 314    }
 315
 316    intel->no_batch_wrap = false;
 317
 318    drm_intel_bo_unreference(vb_bo);
 319 }
 320
 321 /**
 322  * Uploads the locally-accumulated VB into the buffer object.
 323  *
 324  * This avoids us thrashing the cachelines in and out as the buffer gets
 325  * filled, dispatched, then reused as the hardware completes rendering from it,
 326  * and also lets us clflush less if we dispatch with a partially-filled VB.
 327  *
 328  * This is called normally from get_space when we're finishing a BO, but also
 329  * at batch flush time so that we don't try accessing the contents of a
 330  * just-dispatched buffer.
 331  */
 332 void intel_finish_vb(struct intel_context *intel)
 333 {
 334    if (intel->prim.vb_bo == NULL)
 335       return;
 336
 337    drm_intel_bo_subdata(intel->prim.vb_bo, 0, intel->prim.start_offset,
 338                         intel->prim.vb);
 339    drm_intel_bo_unreference(intel->prim.vb_bo);
 340    intel->prim.vb_bo = NULL;
 341 }
 342
 343 /***********************************************************************
 344  *                    Emit primitives as inline vertices               *
 345  ***********************************************************************/
 346
 347 #ifdef __i386__
 348 #define COPY_DWORDS( j, vb, vertsize, v )                       \
 349 do {                                                            \
 350    int __tmp;                                                   \
 351    __asm__ __volatile__( "rep ; movsl"                          \
 352                          : "=%c" (j), "=D" (vb), "=S" (__tmp)   \
 353                          : "0" (vertsize),                      \
 354                          "D" ((long)vb),                        \
 355                          "S" ((long)v) );                       \
 356 } while (0)
 357 #else
 358 #define COPY_DWORDS( j, vb, vertsize, v )       \
 359 do {                                            \
 360    for ( j = 0 ; j < vertsize ; j++ ) {         \
 361       vb[j] = ((GLuint *)v)[j];                 \
 362    }                                            \
 363    vb += vertsize;                              \
 364 } while (0)
 365 #endif
 366
 367 static void
 368 intel_draw_quad(struct intel_context *intel,
 369                 intelVertexPtr v0,
 370                 intelVertexPtr v1, intelVertexPtr v2, intelVertexPtr v3)
 371 {
 372    GLuint vertsize = intel->vertex_size;
 373    GLuint *vb = intel_get_prim_space(intel, 6);
 374    int j;
 375
 376    COPY_DWORDS(j, vb, vertsize, v0);
 377    COPY_DWORDS(j, vb, vertsize, v1);
 378
 379    /* If smooth shading, draw like a trifan which gives better
 380     * rasterization.  Otherwise draw as two triangles with provoking
 381     * vertex in third position as required for flat shading.
 382     */
 383    if (intel->ctx.Light.ShadeModel == GL_FLAT) {
 384       COPY_DWORDS(j, vb, vertsize, v3);
 385       COPY_DWORDS(j, vb, vertsize, v1);
 386    }
 387    else {
 388       COPY_DWORDS(j, vb, vertsize, v2);
 389       COPY_DWORDS(j, vb, vertsize, v0);
 390    }
 391
 392    COPY_DWORDS(j, vb, vertsize, v2);
 393    COPY_DWORDS(j, vb, vertsize, v3);
 394 }
 395
 396 static void
 397 intel_draw_triangle(struct intel_context *intel,
 398                     intelVertexPtr v0, intelVertexPtr v1, intelVertexPtr v2)
 399 {
 400    GLuint vertsize = intel->vertex_size;
 401    GLuint *vb = intel_get_prim_space(intel, 3);
 402    int j;
 403
 404    COPY_DWORDS(j, vb, vertsize, v0);
 405    COPY_DWORDS(j, vb, vertsize, v1);
 406    COPY_DWORDS(j, vb, vertsize, v2);
 407 }
 408
 409
 410 static void
 411 intel_draw_line(struct intel_context *intel,
 412                 intelVertexPtr v0, intelVertexPtr v1)
 413 {
 414    GLuint vertsize = intel->vertex_size;
 415    GLuint *vb = intel_get_prim_space(intel, 2);
 416    int j;
 417
 418    COPY_DWORDS(j, vb, vertsize, v0);
 419    COPY_DWORDS(j, vb, vertsize, v1);
 420 }
 421
 422
 423 static void
 424 intel_draw_point(struct intel_context *intel, intelVertexPtr v0)
 425 {
 426    GLuint vertsize = intel->vertex_size;
 427    GLuint *vb = intel_get_prim_space(intel, 1);
 428    int j;
 429
 430    COPY_DWORDS(j, vb, vertsize, v0);
 431 }
 432
 433
 434
 435 /***********************************************************************
 436  *                Fixup for ARB_point_parameters                       *
 437  ***********************************************************************/
 438
 439 /* Currently not working - VERT_ATTRIB_POINTSIZE isn't correctly
 440  * represented in the fragment program info.inputs_read field.
 441  */
 442 static void
 443 intel_atten_point(struct intel_context *intel, intelVertexPtr v0)
 444 {
 445    struct gl_context *ctx = &intel->ctx;
 446    GLfloat psz[4], col[4], restore_psz, restore_alpha;
 447
 448    _tnl_get_attr(ctx, v0, _TNL_ATTRIB_POINTSIZE, psz);
 449    _tnl_get_attr(ctx, v0, _TNL_ATTRIB_COLOR0, col);
 450
 451    restore_psz = psz[0];
 452    restore_alpha = col[3];
 453
 454    if (psz[0] >= ctx->Point.Threshold) {
 455       psz[0] = MIN2(psz[0], ctx->Point.MaxSize);
 456    }
 457    else {
 458       GLfloat dsize = psz[0] / ctx->Point.Threshold;
 459       psz[0] = MAX2(ctx->Point.Threshold, ctx->Point.MinSize);
 460       col[3] *= dsize * dsize;
 461    }
 462
 463    if (psz[0] < 1.0)
 464       psz[0] = 1.0;
 465
 466    if (restore_psz != psz[0] || restore_alpha != col[3]) {
 467       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_POINTSIZE, psz);
 468       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_COLOR0, col);
 469
 470       intel_draw_point(intel, v0);
 471
 472       psz[0] = restore_psz;
 473       col[3] = restore_alpha;
 474
 475       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_POINTSIZE, psz);
 476       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_COLOR0, col);
 477    }
 478    else
 479       intel_draw_point(intel, v0);
 480 }
 481
 482
 483
 484
 485
 486 /***********************************************************************
 487  *                Fixup for I915 WPOS texture coordinate                *
 488  ***********************************************************************/
 489
 490 static void
 491 intel_emit_fragcoord(struct intel_context *intel, intelVertexPtr v)
 492 {
 493    struct gl_context *ctx = &intel->ctx;
 494    struct gl_framebuffer *fb = ctx->DrawBuffer;
 495    GLuint offset = intel->wpos_offset;
 496    float *vertex_position = (float *)v;
 497    float *fragcoord = (float *)((char *)v + offset);
 498
 499    fragcoord[0] = vertex_position[0];
 500
 501    if (_mesa_is_user_fbo(fb))
 502       fragcoord[1] = vertex_position[1];
 503    else
 504       fragcoord[1] = fb->Height - vertex_position[1];
 505
 506    fragcoord[2] = vertex_position[2];
 507    fragcoord[3] = vertex_position[3];
 508 }
 509
 510 static void
 511 intel_wpos_triangle(struct intel_context *intel,
 512                     intelVertexPtr v0, intelVertexPtr v1, intelVertexPtr v2)
 513 {
 514    intel_emit_fragcoord(intel, v0);
 515    intel_emit_fragcoord(intel, v1);
 516    intel_emit_fragcoord(intel, v2);
 517
 518    intel_draw_triangle(intel, v0, v1, v2);
 519 }
 520
 521
 522 static void
 523 intel_wpos_line(struct intel_context *intel,
 524                 intelVertexPtr v0, intelVertexPtr v1)
 525 {
 526    intel_emit_fragcoord(intel, v0);
 527    intel_emit_fragcoord(intel, v1);
 528    intel_draw_line(intel, v0, v1);
 529 }
 530
 531
 532 static void
 533 intel_wpos_point(struct intel_context *intel, intelVertexPtr v0)
 534 {
 535    intel_emit_fragcoord(intel, v0);
 536    intel_draw_point(intel, v0);
 537 }
 538
 539
 540
 541
 542
 543
 544 /***********************************************************************
 545  *          Macros for t_dd_tritmp.h to draw basic primitives          *
 546  ***********************************************************************/
 547
 548 #define TRI( a, b, c )                          \
 549 do {                                            \
 550    if (DO_FALLBACK)                             \
 551       intel->draw_tri( intel, a, b, c );        \
 552    else                                         \
 553       intel_draw_triangle( intel, a, b, c );    \
 554 } while (0)
 555
 556 #define QUAD( a, b, c, d )                      \
 557 do {                                            \
 558    if (DO_FALLBACK) {                           \
 559       intel->draw_tri( intel, a, b, d );        \
 560       intel->draw_tri( intel, b, c, d );        \
 561    } else                                       \
 562       intel_draw_quad( intel, a, b, c, d );     \
 563 } while (0)
 564
 565 #define LINE( v0, v1 )                          \
 566 do {                                            \
 567    if (DO_FALLBACK)                             \
 568       intel->draw_line( intel, v0, v1 );        \
 569    else                                         \
 570       intel_draw_line( intel, v0, v1 );         \
 571 } while (0)
 572
 573 #define POINT( v0 )                             \
 574 do {                                            \
 575    if (DO_FALLBACK)                             \
 576       intel->draw_point( intel, v0 );           \
 577    else                                         \
 578       intel_draw_point( intel, v0 );            \
 579 } while (0)
 580
 581
 582 /***********************************************************************
 583  *              Build render functions from dd templates               *
 584  ***********************************************************************/
 585
 586 #define INTEL_OFFSET_BIT        0x01
 587 #define INTEL_TWOSIDE_BIT       0x02
 588 #define INTEL_UNFILLED_BIT      0x04
 589 #define INTEL_FALLBACK_BIT      0x08
 590 #define INTEL_MAX_TRIFUNC       0x10
 591
 592
 593 static struct
 594 {
 595    tnl_points_func points;
 596    tnl_line_func line;
 597    tnl_triangle_func triangle;
 598    tnl_quad_func quad;
 599 } rast_tab[INTEL_MAX_TRIFUNC];
 600
 601
 602 #define DO_FALLBACK ((IND & INTEL_FALLBACK_BIT) != 0)
 603 #define DO_OFFSET   ((IND & INTEL_OFFSET_BIT) != 0)
 604 #define DO_UNFILLED ((IND & INTEL_UNFILLED_BIT) != 0)
 605 #define DO_TWOSIDE  ((IND & INTEL_TWOSIDE_BIT) != 0)
 606 #define DO_FLAT      0
 607 #define DO_TRI       1
 608 #define DO_QUAD      1
 609 #define DO_LINE      1
 610 #define DO_POINTS    1
 611 #define DO_FULL_QUAD 1
 612
 613 #define HAVE_SPEC         1
 614 #define HAVE_BACK_COLORS  0
 615 #define HAVE_HW_FLATSHADE 1
 616 #define VERTEX            intelVertex
 617 #define TAB               rast_tab
 618
 619 /* Only used to pull back colors into vertices (ie, we know color is
 620  * floating point).
 621  */
 622 #define INTEL_COLOR( dst, src )                         \
 623 do {                                                    \
 624    UNCLAMPED_FLOAT_TO_UBYTE((dst)[0], (src)[2]);        \
 625    UNCLAMPED_FLOAT_TO_UBYTE((dst)[1], (src)[1]);        \
 626    UNCLAMPED_FLOAT_TO_UBYTE((dst)[2], (src)[0]);        \
 627    UNCLAMPED_FLOAT_TO_UBYTE((dst)[3], (src)[3]);        \
 628 } while (0)
 629
 630 #define INTEL_SPEC( dst, src )                          \
 631 do {                                                    \
 632    UNCLAMPED_FLOAT_TO_UBYTE((dst)[0], (src)[2]);        \
 633    UNCLAMPED_FLOAT_TO_UBYTE((dst)[1], (src)[1]);        \
 634    UNCLAMPED_FLOAT_TO_UBYTE((dst)[2], (src)[0]);        \
 635 } while (0)
 636
 637
 638 #define DEPTH_SCALE (ctx->DrawBuffer->Visual.depthBits == 16 ? 1.0 : 2.0)
 639 #define UNFILLED_TRI unfilled_tri
 640 #define UNFILLED_QUAD unfilled_quad
 641 #define VERT_X(_v) _v->v.x
 642 #define VERT_Y(_v) _v->v.y
 643 #define VERT_Z(_v) _v->v.z
 644 #define AREA_IS_CCW( a ) (a > 0)
 645 #define GET_VERTEX(e) (intel->verts + (e * intel->vertex_size * sizeof(GLuint)))
 646
 647 #define VERT_SET_RGBA( v, c )    if (coloroffset) INTEL_COLOR( v->ub4[coloroffset], c )
 648 #define VERT_COPY_RGBA( v0, v1 ) if (coloroffset) v0->ui[coloroffset] = v1->ui[coloroffset]
 649 #define VERT_SAVE_RGBA( idx )    if (coloroffset) color[idx] = v[idx]->ui[coloroffset]
 650 #define VERT_RESTORE_RGBA( idx ) if (coloroffset) v[idx]->ui[coloroffset] = color[idx]
 651
 652 #define VERT_SET_SPEC( v, c )    if (specoffset) INTEL_SPEC( v->ub4[specoffset], c )
 653 #define VERT_COPY_SPEC( v0, v1 ) if (specoffset) COPY_3V(v0->ub4[specoffset], v1->ub4[specoffset])
 654 #define VERT_SAVE_SPEC( idx )    if (specoffset) spec[idx] = v[idx]->ui[specoffset]
 655 #define VERT_RESTORE_SPEC( idx ) if (specoffset) v[idx]->ui[specoffset] = spec[idx]
 656
 657 #define LOCAL_VARS(n)                                                   \
 658    struct intel_context *intel = intel_context(ctx);                    \
 659    GLuint color[n] = { 0, }, spec[n] = { 0, };                          \
 660    GLuint coloroffset = intel->coloroffset;                             \
 661    GLuint specoffset = intel->specoffset;                               \
 662    (void) color; (void) spec; (void) coloroffset; (void) specoffset;
 663
 664
 665 /***********************************************************************
 666  *                Helpers for rendering unfilled primitives            *
 667  ***********************************************************************/
 668
 669 static const GLuint hw_prim[GL_POLYGON + 1] = {
 670    [GL_POINTS] = PRIM3D_POINTLIST,
 671    [GL_LINES] = PRIM3D_LINELIST,
 672    [GL_LINE_LOOP] = PRIM3D_LINELIST,
 673    [GL_LINE_STRIP] = PRIM3D_LINELIST,
 674    [GL_TRIANGLES] = PRIM3D_TRILIST,
 675    [GL_TRIANGLE_STRIP] = PRIM3D_TRILIST,
 676    [GL_TRIANGLE_FAN] = PRIM3D_TRILIST,
 677    [GL_QUADS] = PRIM3D_TRILIST,
 678    [GL_QUAD_STRIP] = PRIM3D_TRILIST,
 679    [GL_POLYGON] = PRIM3D_TRILIST,
 680 };
 681
 682 #define RASTERIZE(x) intelRasterPrimitive( ctx, x, hw_prim[x] )
 683 #define RENDER_PRIMITIVE intel->render_primitive
 684 #define TAG(x) x
 685 #define IND INTEL_FALLBACK_BIT
 686 #include "tnl_dd/t_dd_unfilled.h"
 687 #undef IND
 688
 689 /***********************************************************************
 690  *                      Generate GL render functions                   *
 691  ***********************************************************************/
 692
 693 #define IND (0)
 694 #define TAG(x) x
 695 #include "tnl_dd/t_dd_tritmp.h"
 696
 697 #define IND (INTEL_OFFSET_BIT)
 698 #define TAG(x) x##_offset
 699 #include "tnl_dd/t_dd_tritmp.h"
 700
 701 #define IND (INTEL_TWOSIDE_BIT)
 702 #define TAG(x) x##_twoside
 703 #include "tnl_dd/t_dd_tritmp.h"
 704
 705 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT)
 706 #define TAG(x) x##_twoside_offset
 707 #include "tnl_dd/t_dd_tritmp.h"
 708
 709 #define IND (INTEL_UNFILLED_BIT)
 710 #define TAG(x) x##_unfilled
 711 #include "tnl_dd/t_dd_tritmp.h"
 712
 713 #define IND (INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT)
 714 #define TAG(x) x##_offset_unfilled
 715 #include "tnl_dd/t_dd_tritmp.h"
 716
 717 #define IND (INTEL_TWOSIDE_BIT|INTEL_UNFILLED_BIT)
 718 #define TAG(x) x##_twoside_unfilled
 719 #include "tnl_dd/t_dd_tritmp.h"
 720
 721 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT)
 722 #define TAG(x) x##_twoside_offset_unfilled
 723 #include "tnl_dd/t_dd_tritmp.h"
 724
 725 #define IND (INTEL_FALLBACK_BIT)
 726 #define TAG(x) x##_fallback
 727 #include "tnl_dd/t_dd_tritmp.h"
 728
 729 #define IND (INTEL_OFFSET_BIT|INTEL_FALLBACK_BIT)
 730 #define TAG(x) x##_offset_fallback
 731 #include "tnl_dd/t_dd_tritmp.h"
 732
 733 #define IND (INTEL_TWOSIDE_BIT|INTEL_FALLBACK_BIT)
 734 #define TAG(x) x##_twoside_fallback
 735 #include "tnl_dd/t_dd_tritmp.h"
 736
 737 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT|INTEL_FALLBACK_BIT)
 738 #define TAG(x) x##_twoside_offset_fallback
 739 #include "tnl_dd/t_dd_tritmp.h"
 740
 741 #define IND (INTEL_UNFILLED_BIT|INTEL_FALLBACK_BIT)
 742 #define TAG(x) x##_unfilled_fallback
 743 #include "tnl_dd/t_dd_tritmp.h"
 744
 745 #define IND (INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT|INTEL_FALLBACK_BIT)
 746 #define TAG(x) x##_offset_unfilled_fallback
 747 #include "tnl_dd/t_dd_tritmp.h"
 748
 749 #define IND (INTEL_TWOSIDE_BIT|INTEL_UNFILLED_BIT|INTEL_FALLBACK_BIT)
 750 #define TAG(x) x##_twoside_unfilled_fallback
 751 #include "tnl_dd/t_dd_tritmp.h"
 752
 753 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT| \
 754              INTEL_FALLBACK_BIT)
 755 #define TAG(x) x##_twoside_offset_unfilled_fallback
 756 #include "tnl_dd/t_dd_tritmp.h"
 757
 758
 759 static void
 760 init_rast_tab(void)
 761 {
 762    init();
 763    init_offset();
 764    init_twoside();
 765    init_twoside_offset();
 766    init_unfilled();
 767    init_offset_unfilled();
 768    init_twoside_unfilled();
 769    init_twoside_offset_unfilled();
 770    init_fallback();
 771    init_offset_fallback();
 772    init_twoside_fallback();
 773    init_twoside_offset_fallback();
 774    init_unfilled_fallback();
 775    init_offset_unfilled_fallback();
 776    init_twoside_unfilled_fallback();
 777    init_twoside_offset_unfilled_fallback();
 778 }
 779
 780
 781 /***********************************************************************
 782  *                    Rasterization fallback helpers                   *
 783  ***********************************************************************/
 784
 785
 786 /* This code is hit only when a mix of accelerated and unaccelerated
 787  * primitives are being drawn, and only for the unaccelerated
 788  * primitives.
 789  */
 790 static void
 791 intel_fallback_tri(struct intel_context *intel,
 792                    intelVertex * v0, intelVertex * v1, intelVertex * v2)
 793 {
 794    struct gl_context *ctx = &intel->ctx;
 795    SWvertex v[3];
 796
 797    if (0)
 798       fprintf(stderr, "\n%s\n", __func__);
 799
 800    INTEL_FIREVERTICES(intel);
 801
 802    _swsetup_Translate(ctx, v0, &v[0]);
 803    _swsetup_Translate(ctx, v1, &v[1]);
 804    _swsetup_Translate(ctx, v2, &v[2]);
 805    _swrast_render_start(ctx);
 806    _swrast_Triangle(ctx, &v[0], &v[1], &v[2]);
 807    _swrast_render_finish(ctx);
 808 }
 809
 810
 811 static void
 812 intel_fallback_line(struct intel_context *intel,
 813                     intelVertex * v0, intelVertex * v1)
 814 {
 815    struct gl_context *ctx = &intel->ctx;
 816    SWvertex v[2];
 817
 818    if (0)
 819       fprintf(stderr, "\n%s\n", __func__);
 820
 821    INTEL_FIREVERTICES(intel);
 822
 823    _swsetup_Translate(ctx, v0, &v[0]);
 824    _swsetup_Translate(ctx, v1, &v[1]);
 825    _swrast_render_start(ctx);
 826    _swrast_Line(ctx, &v[0], &v[1]);
 827    _swrast_render_finish(ctx);
 828 }
 829
 830 static void
 831 intel_fallback_point(struct intel_context *intel,
 832                      intelVertex * v0)
 833 {
 834    struct gl_context *ctx = &intel->ctx;
 835    SWvertex v[1];
 836
 837    if (0)
 838       fprintf(stderr, "\n%s\n", __func__);
 839
 840    INTEL_FIREVERTICES(intel);
 841
 842    _swsetup_Translate(ctx, v0, &v[0]);
 843    _swrast_render_start(ctx);
 844    _swrast_Point(ctx, &v[0]);
 845    _swrast_render_finish(ctx);
 846 }
 847
 848
 849 /**********************************************************************/
 850 /*               Render unclipped begin/end objects                   */
 851 /**********************************************************************/
 852
 853 #define IND 0
 854 #define V(x) (intelVertex *)(vertptr + ((x)*vertsize*sizeof(GLuint)))
 855 #define RENDER_POINTS( start, count )   \
 856    for ( ; start < count ; start++) POINT( V(ELT(start)) );
 857 #define RENDER_LINE( v0, v1 )         LINE( V(v0), V(v1) )
 858 #define RENDER_TRI(  v0, v1, v2 )     TRI(  V(v0), V(v1), V(v2) )
 859 #define RENDER_QUAD( v0, v1, v2, v3 ) QUAD( V(v0), V(v1), V(v2), V(v3) )
 860 #define INIT(x) intelRenderPrimitive( ctx, x )
 861 #undef LOCAL_VARS
 862 #define LOCAL_VARS                                              \
 863     struct intel_context *intel = intel_context(ctx);                   \
 864     GLubyte *vertptr = (GLubyte *)intel->verts;                 \
 865     const GLuint vertsize = intel->vertex_size;         \
 866     const GLuint * const elt = TNL_CONTEXT(ctx)->vb.Elts;       \
 867     (void) elt;
 868 #define RESET_STIPPLE
 869 #define RESET_OCCLUSION
 870 #define PRESERVE_VB_DEFS
 871 #define ELT(x) x
 872 #define TAG(x) intel_##x##_verts
 873 #include "tnl/t_vb_rendertmp.h"
 874 #undef ELT
 875 #undef TAG
 876 #define TAG(x) intel_##x##_elts
 877 #define ELT(x) elt[x]
 878 #include "tnl/t_vb_rendertmp.h"
 879
 880 /**********************************************************************/
 881 /*                   Render clipped primitives                        */
 882 /**********************************************************************/
 883
 884
 885
 886 static void
 887 intelRenderClippedPoly(struct gl_context * ctx, const GLuint * elts, GLuint n)
 888 {
 889    struct intel_context *intel = intel_context(ctx);
 890    TNLcontext *tnl = TNL_CONTEXT(ctx);
 891    GLuint prim = intel->render_primitive;
 892
 893    /* Render the new vertices as an unclipped polygon.
 894     */
 895    _tnl_RenderClippedPolygon(ctx, elts, n);
 896
 897    /* Restore the render primitive
 898     */
 899    if (prim != GL_POLYGON)
 900       tnl->Driver.Render.PrimitiveNotify(ctx, prim);
 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    if (ctx->Light.ProvokingVertex == GL_LAST_VERTEX_CONVENTION) {
 914       for (i = 2; i < n; i++) {
 915          COPY_DWORDS(j, vb, vertsize, V(elts[i - 1]));
 916          COPY_DWORDS(j, vb, vertsize, V(elts[i]));
 917          COPY_DWORDS(j, vb, vertsize, start);
 918       }
 919    } else {
 920       for (i = 2; i < n; i++) {
 921          COPY_DWORDS(j, vb, vertsize, start);
 922          COPY_DWORDS(j, vb, vertsize, V(elts[i - 1]));
 923          COPY_DWORDS(j, vb, vertsize, V(elts[i]));
 924       }
 925    }
 926 }
 927
 928 /**********************************************************************/
 929 /*                    Choose render functions                         */
 930 /**********************************************************************/
 931
 932
 933 #define DD_TRI_LIGHT_TWOSIDE (1 << 1)
 934 #define DD_TRI_UNFILLED (1 << 2)
 935 #define DD_TRI_STIPPLE  (1 << 4)
 936 #define DD_TRI_OFFSET   (1 << 5)
 937 #define DD_LINE_STIPPLE (1 << 7)
 938 #define DD_POINT_ATTEN  (1 << 9)
 939
 940 #define ANY_FALLBACK_FLAGS (DD_LINE_STIPPLE | DD_TRI_STIPPLE | DD_POINT_ATTEN)
 941 #define ANY_RASTER_FLAGS (DD_TRI_LIGHT_TWOSIDE | DD_TRI_OFFSET | DD_TRI_UNFILLED)
 942
 943 void
 944 intelChooseRenderState(struct gl_context * ctx)
 945 {
 946    TNLcontext *tnl = TNL_CONTEXT(ctx);
 947    struct intel_context *intel = intel_context(ctx);
 948    GLuint flags =
 949       ((ctx->Light.Enabled &&
 950         ctx->Light.Model.TwoSide) ? DD_TRI_LIGHT_TWOSIDE : 0) |
 951       ((ctx->Polygon.FrontMode != GL_FILL ||
 952         ctx->Polygon.BackMode != GL_FILL) ? DD_TRI_UNFILLED : 0) |
 953       (ctx->Polygon.StippleFlag ? DD_TRI_STIPPLE : 0) |
 954       ((ctx->Polygon.OffsetPoint ||
 955         ctx->Polygon.OffsetLine ||
 956         ctx->Polygon.OffsetFill) ? DD_TRI_OFFSET : 0) |
 957       (ctx->Line.StippleFlag ? DD_LINE_STIPPLE : 0) |
 958       (ctx->Point._Attenuated ? DD_POINT_ATTEN : 0);
 959    const struct gl_program *fprog = ctx->FragmentProgram._Current;
 960    bool have_wpos = (fprog && (fprog->info.inputs_read & VARYING_BIT_POS));
 961    GLuint index = 0;
 962
 963    if (INTEL_DEBUG & DEBUG_STATE)
 964       fprintf(stderr, "\n%s\n", __func__);
 965
 966    if ((flags & (ANY_FALLBACK_FLAGS | ANY_RASTER_FLAGS)) || have_wpos) {
 967
 968       if (flags & ANY_RASTER_FLAGS) {
 969          if (flags & DD_TRI_LIGHT_TWOSIDE)
 970             index |= INTEL_TWOSIDE_BIT;
 971          if (flags & DD_TRI_OFFSET)
 972             index |= INTEL_OFFSET_BIT;
 973          if (flags & DD_TRI_UNFILLED)
 974             index |= INTEL_UNFILLED_BIT;
 975       }
 976
 977       if (have_wpos) {
 978          intel->draw_point = intel_wpos_point;
 979          intel->draw_line = intel_wpos_line;
 980          intel->draw_tri = intel_wpos_triangle;
 981
 982          /* Make sure these get called:
 983           */
 984          index |= INTEL_FALLBACK_BIT;
 985       }
 986       else {
 987          intel->draw_point = intel_draw_point;
 988          intel->draw_line = intel_draw_line;
 989          intel->draw_tri = intel_draw_triangle;
 990       }
 991
 992       /* Hook in fallbacks for specific primitives.
 993        */
 994       if (flags & ANY_FALLBACK_FLAGS) {
 995          if (flags & DD_LINE_STIPPLE)
 996             intel->draw_line = intel_fallback_line;
 997
 998          if ((flags & DD_TRI_STIPPLE) && !intel->hw_stipple)
 999             intel->draw_tri = intel_fallback_tri;
1000
1001          if (flags & DD_POINT_ATTEN) {
1002             if (0)
1003                intel->draw_point = intel_atten_point;
1004             else
1005                intel->draw_point = intel_fallback_point;
1006          }
1007
1008          index |= INTEL_FALLBACK_BIT;
1009       }
1010    }
1011
1012    if (intel->RenderIndex != index) {
1013       intel->RenderIndex = index;
1014
1015       tnl->Driver.Render.Points = rast_tab[index].points;
1016       tnl->Driver.Render.Line = rast_tab[index].line;
1017       tnl->Driver.Render.Triangle = rast_tab[index].triangle;
1018       tnl->Driver.Render.Quad = rast_tab[index].quad;
1019
1020       if (index == 0) {
1021          tnl->Driver.Render.PrimTabVerts = intel_render_tab_verts;
1022          tnl->Driver.Render.PrimTabElts = intel_render_tab_elts;
1023          tnl->Driver.Render.ClippedLine = line; /* from tritmp.h */
1024          tnl->Driver.Render.ClippedPolygon = intelFastRenderClippedPoly;
1025       }
1026       else {
1027          tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
1028          tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
1029          tnl->Driver.Render.ClippedLine = _tnl_RenderClippedLine;
1030          tnl->Driver.Render.ClippedPolygon = intelRenderClippedPoly;
1031       }
1032    }
1033 }
1034
1035 static const GLenum reduced_prim[GL_POLYGON + 1] = {
1036    [GL_POINTS] = GL_POINTS,
1037    [GL_LINES] = GL_LINES,
1038    [GL_LINE_LOOP] = GL_LINES,
1039    [GL_LINE_STRIP] = GL_LINES,
1040    [GL_TRIANGLES] = GL_TRIANGLES,
1041    [GL_TRIANGLE_STRIP] = GL_TRIANGLES,
1042    [GL_TRIANGLE_FAN] = GL_TRIANGLES,
1043    [GL_QUADS] = GL_TRIANGLES,
1044    [GL_QUAD_STRIP] = GL_TRIANGLES,
1045    [GL_POLYGON] = GL_TRIANGLES
1046 };
1047
1048
1049 /**********************************************************************/
1050 /*                 High level hooks for t_vb_render.c                 */
1051 /**********************************************************************/
1052
1053
1054
1055
1056 static void
1057 intelRunPipeline(struct gl_context * ctx)
1058 {
1059    struct intel_context *intel = intel_context(ctx);
1060
1061    _mesa_lock_context_textures(ctx);
1062
1063    if (ctx->NewState)
1064       _mesa_update_state_locked(ctx);
1065
1066    /* We need to get this done before we start the pipeline, or a
1067     * change in the INTEL_FALLBACK() of its intel_draw_buffers() call
1068     * while the pipeline is running will result in mismatched swrast
1069     * map/unmaps, and later assertion failures.
1070     */
1071    intel_prepare_render(intel);
1072
1073    if (intel->NewGLState) {
1074       if (intel->NewGLState & _NEW_TEXTURE) {
1075          intel->vtbl.update_texture_state(intel);
1076       }
1077
1078       if (!intel->Fallback) {
1079          if (intel->NewGLState & _INTEL_NEW_RENDERSTATE)
1080             intelChooseRenderState(ctx);
1081       }
1082
1083       intel->NewGLState = 0;
1084    }
1085
1086    intel->tnl_pipeline_running = true;
1087    _tnl_run_pipeline(ctx);
1088    intel->tnl_pipeline_running = false;
1089
1090    _mesa_unlock_context_textures(ctx);
1091 }
1092
1093 static void
1094 intelRenderStart(struct gl_context * ctx)
1095 {
1096    struct intel_context *intel = intel_context(ctx);
1097
1098    intel_check_front_buffer_rendering(intel);
1099    intel->vtbl.render_start(intel_context(ctx));
1100    intel->vtbl.emit_state(intel);
1101 }
1102
1103 static void
1104 intelRenderFinish(struct gl_context * ctx)
1105 {
1106    struct intel_context *intel = intel_context(ctx);
1107
1108    if (intel->RenderIndex & INTEL_FALLBACK_BIT)
1109       _swrast_flush(ctx);
1110
1111    INTEL_FIREVERTICES(intel);
1112 }
1113
1114
1115
1116
1117  /* System to flush dma and emit state changes based on the rasterized
1118   * primitive.
1119   */
1120 static void
1121 intelRasterPrimitive(struct gl_context * ctx, GLenum rprim, GLuint hwprim)
1122 {
1123    struct intel_context *intel = intel_context(ctx);
1124
1125    if (0)
1126       fprintf(stderr, "%s %s %x\n", __func__,
1127               _mesa_enum_to_string(rprim), hwprim);
1128
1129    intel->vtbl.reduced_primitive_state(intel, rprim);
1130
1131    /* Start a new primitive.  Arrange to have it flushed later on.
1132     */
1133    if (hwprim != intel->prim.primitive) {
1134       INTEL_FIREVERTICES(intel);
1135
1136       intel_set_prim(intel, hwprim);
1137    }
1138 }
1139
1140
1141  /*
1142   */
1143 static void
1144 intelRenderPrimitive(struct gl_context * ctx, GLenum prim)
1145 {
1146    struct intel_context *intel = intel_context(ctx);
1147    GLboolean unfilled = (ctx->Polygon.FrontMode != GL_FILL ||
1148                          ctx->Polygon.BackMode != GL_FILL);
1149
1150    if (0)
1151       fprintf(stderr, "%s %s\n", __func__, _mesa_enum_to_string(prim));
1152
1153    /* Let some clipping routines know which primitive they're dealing
1154     * with.
1155     */
1156    intel->render_primitive = prim;
1157
1158    /* Shortcircuit this when called for unfilled triangles.  The rasterized
1159     * primitive will always be reset by lower level functions in that case,
1160     * potentially pingponging the state:
1161     */
1162    if (reduced_prim[prim] == GL_TRIANGLES && unfilled)
1163       return;
1164
1165    /* Set some primitive-dependent state and Start? a new primitive.
1166     */
1167    intelRasterPrimitive(ctx, reduced_prim[prim], hw_prim[prim]);
1168 }
1169
1170
1171  /**********************************************************************/
1172  /*           Transition to/from hardware rasterization.               */
1173  /**********************************************************************/
1174
1175 static char *fallbackStrings[] = {
1176    [0] = "Draw buffer",
1177    [1] = "Read buffer",
1178    [2] = "Depth buffer",
1179    [3] = "Stencil buffer",
1180    [4] = "User disable",
1181    [5] = "Render mode",
1182
1183    [12] = "Texture",
1184    [13] = "Color mask",
1185    [14] = "Stencil",
1186    [15] = "Stipple",
1187    [16] = "Program",
1188    [17] = "Logic op",
1189    [18] = "Smooth polygon",
1190    [19] = "Smooth point",
1191    [20] = "point sprite coord origin",
1192    [21] = "depth/color drawing offset",
1193    [22] = "coord replace(SPRITE POINT ENABLE)",
1194 };
1195
1196
1197 static char *
1198 getFallbackString(GLuint bit)
1199 {
1200    int i = 0;
1201    while (bit > 1) {
1202       i++;
1203       bit >>= 1;
1204    }
1205    return fallbackStrings[i];
1206 }
1207
1208
1209
1210 /**
1211  * Enable/disable a fallback flag.
1212  * \param bit  one of INTEL_FALLBACK_x flags.
1213  */
1214 void
1215 intelFallback(struct intel_context *intel, GLbitfield bit, bool mode)
1216 {
1217    struct gl_context *ctx = &intel->ctx;
1218    TNLcontext *tnl = TNL_CONTEXT(ctx);
1219    const GLbitfield oldfallback = intel->Fallback;
1220
1221    if (mode) {
1222       intel->Fallback |= bit;
1223       if (oldfallback == 0) {
1224          assert(!intel->tnl_pipeline_running);
1225
1226          intel_flush(ctx);
1227          if (INTEL_DEBUG & DEBUG_PERF)
1228             fprintf(stderr, "ENTER FALLBACK %x: %s\n",
1229                     bit, getFallbackString(bit));
1230          _swsetup_Wakeup(ctx);
1231          intel->RenderIndex = ~0;
1232       }
1233    }
1234    else {
1235       intel->Fallback &= ~bit;
1236       if (oldfallback == bit) {
1237          assert(!intel->tnl_pipeline_running);
1238
1239          _swrast_flush(ctx);
1240          if (INTEL_DEBUG & DEBUG_PERF)
1241             fprintf(stderr, "LEAVE FALLBACK %s\n", getFallbackString(bit));
1242          tnl->Driver.Render.Start = intelRenderStart;
1243          tnl->Driver.Render.PrimitiveNotify = intelRenderPrimitive;
1244          tnl->Driver.Render.Finish = intelRenderFinish;
1245          tnl->Driver.Render.BuildVertices = _tnl_build_vertices;
1246          tnl->Driver.Render.CopyPV = _tnl_copy_pv;
1247          tnl->Driver.Render.Interp = _tnl_interp;
1248
1249          _tnl_invalidate_vertex_state(ctx, ~0);
1250          _tnl_invalidate_vertices(ctx, ~0);
1251          _tnl_install_attrs(ctx,
1252                             intel->vertex_attrs,
1253                             intel->vertex_attr_count,
1254                             intel->ViewportMatrix.m, 0);
1255
1256          intel->NewGLState |= _INTEL_NEW_RENDERSTATE;
1257       }
1258    }
1259 }
1260
1261 /**********************************************************************/
1262 /*                            Initialization.                         */
1263 /**********************************************************************/
1264
1265
1266 void
1267 intelInitTriFuncs(struct gl_context * ctx)
1268 {
1269    TNLcontext *tnl = TNL_CONTEXT(ctx);
1270    static int firsttime = 1;
1271
1272    if (firsttime) {
1273       init_rast_tab();
1274       firsttime = 0;
1275    }
1276
1277    tnl->Driver.RunPipeline = intelRunPipeline;
1278    tnl->Driver.Render.Start = intelRenderStart;
1279    tnl->Driver.Render.Finish = intelRenderFinish;
1280    tnl->Driver.Render.PrimitiveNotify = intelRenderPrimitive;
1281    tnl->Driver.Render.ResetLineStipple = _swrast_ResetLineStipple;
1282    tnl->Driver.Render.BuildVertices = _tnl_build_vertices;
1283    tnl->Driver.Render.CopyPV = _tnl_copy_pv;
1284    tnl->Driver.Render.Interp = _tnl_interp;
1285 }