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 /** Sets the primitive type for a primitive sequence, flushing as needed. */
  65 void intel_set_prim(struct intel_context *intel, uint32_t prim)
  66 {
  67    if (prim != intel->prim.primitive) {
  68       INTEL_FIREVERTICES(intel);
  69       intel->prim.primitive = prim;
  70    }
  71 }
  72
  73 /** Returns mapped VB space for the given number of vertices */
  74 uint32_t *intel_get_prim_space(struct intel_context *intel, unsigned int count)
  75 {
  76    uint32_t *addr;
  77
  78    /* Check for space in the existing VB */
  79    if (intel->prim.vb_bo == NULL ||
  80        (intel->prim.current_offset +
  81         count * intel->vertex_size * 4) > INTEL_VB_SIZE ||
  82        (intel->prim.count + count) >= (1 << 16)) {
  83       /* Flush existing prim if any */
  84       INTEL_FIREVERTICES(intel);
  85
  86       intel_finish_vb(intel);
  87
  88       /* Start a new VB */
  89       if (intel->prim.vb == NULL)
  90          intel->prim.vb = malloc(INTEL_VB_SIZE);
  91       intel->prim.vb_bo = dri_bo_alloc(intel->bufmgr, "vb",
  92                                        INTEL_VB_SIZE, 4);
  93       intel->prim.start_offset = 0;
  94       intel->prim.current_offset = 0;
  95    }
  96
  97    intel->prim.flush = intel_flush_prim;
  98
  99    addr = (uint32_t *)(intel->prim.vb + intel->prim.current_offset);
 100    intel->prim.current_offset += intel->vertex_size * 4 * count;
 101    intel->prim.count += count;
 102
 103    return addr;
 104 }
 105
 106 /** Dispatches the accumulated primitive to the batchbuffer. */
 107 void intel_flush_prim(struct intel_context *intel)
 108 {
 109    BATCH_LOCALS;
 110    dri_bo *aper_array[2];
 111    dri_bo *vb_bo;
 112    unsigned int offset, count;
 113
 114    /* Must be called after an intel_start_prim. */
 115    assert(intel->prim.primitive != ~0);
 116
 117    if (intel->prim.count == 0)
 118       return;
 119
 120    /* Clear the current prims out of the context state so that a batch flush
 121     * flush triggered by wait_flips or emit_state doesn't loop back to
 122     * flush_prim again.
 123     */
 124    vb_bo = intel->prim.vb_bo;
 125    dri_bo_reference(vb_bo);
 126    count = intel->prim.count;
 127    intel->prim.count = 0;
 128    offset = intel->prim.start_offset;
 129    intel->prim.start_offset = intel->prim.current_offset;
 130    if (!IS_9XX(intel->intelScreen->deviceID))
 131       intel->prim.start_offset = ALIGN(intel->prim.start_offset, 128);
 132    intel->prim.flush = NULL;
 133
 134    intel_wait_flips(intel);
 135
 136    intel->vtbl.emit_state(intel);
 137
 138    aper_array[0] = intel->batch->buf;
 139    aper_array[1] = vb_bo;
 140    if (dri_bufmgr_check_aperture_space(aper_array, 2)) {
 141       intel_batchbuffer_flush(intel->batch);
 142       intel->vtbl.emit_state(intel);
 143    }
 144
 145    /* Ensure that we don't start a new batch for the following emit, which
 146     * depends on the state just emitted. emit_state should be making sure we
 147     * have the space for this.
 148     */
 149    intel->no_batch_wrap = GL_TRUE;
 150
 151    /* Check that we actually emitted the state into this batch, using the
 152     * UPLOAD_CTX bit as the signal.
 153     */
 154    assert((intel->batch->dirty_state & (1<<1)) == 0);
 155
 156 #if 0
 157    printf("emitting %d..%d=%d vertices size %d\n", offset,
 158           intel->prim.current_offset, intel->prim.count,
 159           intel->vertex_size * 4);
 160 #endif
 161
 162    if (IS_9XX(intel->intelScreen->deviceID)) {
 163       BEGIN_BATCH(5, LOOP_CLIPRECTS);
 164       OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 |
 165                 I1_LOAD_S(0) | I1_LOAD_S(1) | 1);
 166       assert((offset & !S0_VB_OFFSET_MASK) == 0);
 167       OUT_RELOC(vb_bo, I915_GEM_DOMAIN_VERTEX, 0, offset);
 168       OUT_BATCH((intel->vertex_size << S1_VERTEX_WIDTH_SHIFT) |
 169                 (intel->vertex_size << S1_VERTEX_PITCH_SHIFT));
 170
 171       OUT_BATCH(_3DPRIMITIVE |
 172                 PRIM_INDIRECT |
 173                 PRIM_INDIRECT_SEQUENTIAL |
 174                 intel->prim.primitive |
 175                 count);
 176       OUT_BATCH(0); /* Beginning vertex index */
 177       ADVANCE_BATCH();
 178    } else {
 179       struct i830_context *i830 = i830_context(&intel->ctx);
 180
 181       BEGIN_BATCH(5, LOOP_CLIPRECTS);
 182       OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 |
 183                 I1_LOAD_S(0) | I1_LOAD_S(2) | 1);
 184       /* S0 */
 185       assert((offset & !S0_VB_OFFSET_MASK_830) == 0);
 186       OUT_RELOC(vb_bo, I915_GEM_DOMAIN_VERTEX, 0,
 187                 offset | (intel->vertex_size << S0_VB_PITCH_SHIFT_830) |
 188                 S0_VB_ENABLE_830);
 189       /* S1
 190        * This is somewhat unfortunate -- VB width is tied up with
 191        * vertex format data that we've already uploaded through
 192        * _3DSTATE_VFT[01]_CMD.  We may want to replace emits of VFT state with
 193        * STATE_IMMEDIATE_1 like this to avoid duplication.
 194        */
 195       OUT_BATCH((i830->state.Ctx[I830_CTXREG_VF] & VFT0_TEX_COUNT_MASK) >>
 196                 VFT0_TEX_COUNT_SHIFT << S2_TEX_COUNT_SHIFT_830 |
 197                 (i830->state.Ctx[I830_CTXREG_VF2] << 16) |
 198                 intel->vertex_size << S2_VERTEX_0_WIDTH_SHIFT_830);
 199
 200       OUT_BATCH(_3DPRIMITIVE |
 201                 PRIM_INDIRECT |
 202                 PRIM_INDIRECT_SEQUENTIAL |
 203                 intel->prim.primitive |
 204                 count);
 205       OUT_BATCH(0); /* Beginning vertex index */
 206       ADVANCE_BATCH();
 207    }
 208
 209    intel->no_batch_wrap = GL_FALSE;
 210
 211    dri_bo_unreference(vb_bo);
 212 }
 213
 214 /**
 215  * Uploads the locally-accumulated VB into the buffer object.
 216  *
 217  * This avoids us thrashing the cachelines in and out as the buffer gets
 218  * filled, dispatched, then reused as the hardware completes rendering from it,
 219  * and also lets us clflush less if we dispatch with a partially-filled VB.
 220  *
 221  * This is called normally from get_space when we're finishing a BO, but also
 222  * at batch flush time so that we don't try accessing the contents of a
 223  * just-dispatched buffer.
 224  */
 225 void intel_finish_vb(struct intel_context *intel)
 226 {
 227    if (intel->prim.vb_bo == NULL)
 228       return;
 229
 230    dri_bo_subdata(intel->prim.vb_bo, 0, intel->prim.start_offset,
 231                   intel->prim.vb);
 232    dri_bo_unreference(intel->prim.vb_bo);
 233    intel->prim.vb_bo = NULL;
 234 }
 235
 236 /***********************************************************************
 237  *                    Emit primitives as inline vertices               *
 238  ***********************************************************************/
 239
 240 #ifdef __i386__
 241 #define COPY_DWORDS( j, vb, vertsize, v )                       \
 242 do {                                                            \
 243    int __tmp;                                                   \
 244    __asm__ __volatile__( "rep ; movsl"                          \
 245                          : "=%c" (j), "=D" (vb), "=S" (__tmp)   \
 246                          : "0" (vertsize),                      \
 247                          "D" ((long)vb),                        \
 248                          "S" ((long)v) );                       \
 249 } while (0)
 250 #else
 251 #define COPY_DWORDS( j, vb, vertsize, v )       \
 252 do {                                            \
 253    for ( j = 0 ; j < vertsize ; j++ ) {         \
 254       vb[j] = ((GLuint *)v)[j];                 \
 255    }                                            \
 256    vb += vertsize;                              \
 257 } while (0)
 258 #endif
 259
 260 static void
 261 intel_draw_quad(struct intel_context *intel,
 262                 intelVertexPtr v0,
 263                 intelVertexPtr v1, intelVertexPtr v2, intelVertexPtr v3)
 264 {
 265    GLuint vertsize = intel->vertex_size;
 266    GLuint *vb = intel_get_prim_space(intel, 6);
 267    int j;
 268
 269    COPY_DWORDS(j, vb, vertsize, v0);
 270    COPY_DWORDS(j, vb, vertsize, v1);
 271
 272    /* If smooth shading, draw like a trifan which gives better
 273     * rasterization.  Otherwise draw as two triangles with provoking
 274     * vertex in third position as required for flat shading.
 275     */
 276    if (intel->ctx.Light.ShadeModel == GL_FLAT) {
 277       COPY_DWORDS(j, vb, vertsize, v3);
 278       COPY_DWORDS(j, vb, vertsize, v1);
 279    }
 280    else {
 281       COPY_DWORDS(j, vb, vertsize, v2);
 282       COPY_DWORDS(j, vb, vertsize, v0);
 283    }
 284
 285    COPY_DWORDS(j, vb, vertsize, v2);
 286    COPY_DWORDS(j, vb, vertsize, v3);
 287 }
 288
 289 static void
 290 intel_draw_triangle(struct intel_context *intel,
 291                     intelVertexPtr v0, intelVertexPtr v1, intelVertexPtr v2)
 292 {
 293    GLuint vertsize = intel->vertex_size;
 294    GLuint *vb = intel_get_prim_space(intel, 3);
 295    int j;
 296
 297    COPY_DWORDS(j, vb, vertsize, v0);
 298    COPY_DWORDS(j, vb, vertsize, v1);
 299    COPY_DWORDS(j, vb, vertsize, v2);
 300 }
 301
 302
 303 static void
 304 intel_draw_line(struct intel_context *intel,
 305                 intelVertexPtr v0, intelVertexPtr v1)
 306 {
 307    GLuint vertsize = intel->vertex_size;
 308    GLuint *vb = intel_get_prim_space(intel, 2);
 309    int j;
 310
 311    COPY_DWORDS(j, vb, vertsize, v0);
 312    COPY_DWORDS(j, vb, vertsize, v1);
 313 }
 314
 315
 316 static void
 317 intel_draw_point(struct intel_context *intel, intelVertexPtr v0)
 318 {
 319    GLuint vertsize = intel->vertex_size;
 320    GLuint *vb = intel_get_prim_space(intel, 1);
 321    int j;
 322
 323    /* Adjust for sub pixel position -- still required for conform. */
 324    *(float *) &vb[0] = v0->v.x;
 325    *(float *) &vb[1] = v0->v.y;
 326    for (j = 2; j < vertsize; j++)
 327       vb[j] = v0->ui[j];
 328 }
 329
 330
 331
 332 /***********************************************************************
 333  *                Fixup for ARB_point_parameters                       *
 334  ***********************************************************************/
 335
 336 /* Currently not working - VERT_ATTRIB_POINTSIZE isn't correctly
 337  * represented in the fragment program InputsRead field.
 338  */
 339 static void
 340 intel_atten_point(struct intel_context *intel, intelVertexPtr v0)
 341 {
 342    GLcontext *ctx = &intel->ctx;
 343    GLfloat psz[4], col[4], restore_psz, restore_alpha;
 344
 345    _tnl_get_attr(ctx, v0, _TNL_ATTRIB_POINTSIZE, psz);
 346    _tnl_get_attr(ctx, v0, _TNL_ATTRIB_COLOR0, col);
 347
 348    restore_psz = psz[0];
 349    restore_alpha = col[3];
 350
 351    if (psz[0] >= ctx->Point.Threshold) {
 352       psz[0] = MIN2(psz[0], ctx->Point.MaxSize);
 353    }
 354    else {
 355       GLfloat dsize = psz[0] / ctx->Point.Threshold;
 356       psz[0] = MAX2(ctx->Point.Threshold, ctx->Point.MinSize);
 357       col[3] *= dsize * dsize;
 358    }
 359
 360    if (psz[0] < 1.0)
 361       psz[0] = 1.0;
 362
 363    if (restore_psz != psz[0] || restore_alpha != col[3]) {
 364       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_POINTSIZE, psz);
 365       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_COLOR0, col);
 366
 367       intel_draw_point(intel, v0);
 368
 369       psz[0] = restore_psz;
 370       col[3] = restore_alpha;
 371
 372       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_POINTSIZE, psz);
 373       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_COLOR0, col);
 374    }
 375    else
 376       intel_draw_point(intel, v0);
 377 }
 378
 379
 380
 381
 382
 383 /***********************************************************************
 384  *                Fixup for I915 WPOS texture coordinate                *
 385  ***********************************************************************/
 386
 387
 388
 389 static void
 390 intel_wpos_triangle(struct intel_context *intel,
 391                     intelVertexPtr v0, intelVertexPtr v1, intelVertexPtr v2)
 392 {
 393    GLuint offset = intel->wpos_offset;
 394    GLuint size = intel->wpos_size;
 395    GLfloat *v0_wpos = (GLfloat *)((char *)v0 + offset);
 396    GLfloat *v1_wpos = (GLfloat *)((char *)v1 + offset);
 397    GLfloat *v2_wpos = (GLfloat *)((char *)v2 + offset);
 398
 399    __memcpy(v0_wpos, v0, size);
 400    __memcpy(v1_wpos, v1, size);
 401    __memcpy(v2_wpos, v2, size);
 402
 403    v0_wpos[1] = -v0_wpos[1] + intel->driDrawable->h;
 404    v1_wpos[1] = -v1_wpos[1] + intel->driDrawable->h;
 405    v2_wpos[1] = -v2_wpos[1] + intel->driDrawable->h;
 406
 407
 408    intel_draw_triangle(intel, v0, v1, v2);
 409 }
 410
 411
 412 static void
 413 intel_wpos_line(struct intel_context *intel,
 414                 intelVertexPtr v0, intelVertexPtr v1)
 415 {
 416    GLuint offset = intel->wpos_offset;
 417    GLuint size = intel->wpos_size;
 418    GLfloat *v0_wpos = (GLfloat *)((char *)v0 + offset);
 419    GLfloat *v1_wpos = (GLfloat *)((char *)v1 + offset);
 420
 421    __memcpy(v0_wpos, v0, size);
 422    __memcpy(v1_wpos, v1, size);
 423
 424    v0_wpos[1] = -v0_wpos[1] + intel->driDrawable->h;
 425    v1_wpos[1] = -v1_wpos[1] + intel->driDrawable->h;
 426
 427    intel_draw_line(intel, v0, v1);
 428 }
 429
 430
 431 static void
 432 intel_wpos_point(struct intel_context *intel, intelVertexPtr v0)
 433 {
 434    GLuint offset = intel->wpos_offset;
 435    GLuint size = intel->wpos_size;
 436    GLfloat *v0_wpos = (GLfloat *)((char *)v0 + offset);
 437
 438    __memcpy(v0_wpos, v0, size);
 439    v0_wpos[1] = -v0_wpos[1] + intel->driDrawable->h;
 440
 441    intel_draw_point(intel, v0);
 442 }
 443
 444
 445
 446
 447
 448
 449 /***********************************************************************
 450  *          Macros for t_dd_tritmp.h to draw basic primitives          *
 451  ***********************************************************************/
 452
 453 #define TRI( a, b, c )                          \
 454 do {                                            \
 455    if (DO_FALLBACK)                             \
 456       intel->draw_tri( intel, a, b, c );        \
 457    else                                         \
 458       intel_draw_triangle( intel, a, b, c );    \
 459 } while (0)
 460
 461 #define QUAD( a, b, c, d )                      \
 462 do {                                            \
 463    if (DO_FALLBACK) {                           \
 464       intel->draw_tri( intel, a, b, d );        \
 465       intel->draw_tri( intel, b, c, d );        \
 466    } else                                       \
 467       intel_draw_quad( intel, a, b, c, d );     \
 468 } while (0)
 469
 470 #define LINE( v0, v1 )                          \
 471 do {                                            \
 472    if (DO_FALLBACK)                             \
 473       intel->draw_line( intel, v0, v1 );        \
 474    else                                         \
 475       intel_draw_line( intel, v0, v1 );         \
 476 } while (0)
 477
 478 #define POINT( v0 )                             \
 479 do {                                            \
 480    if (DO_FALLBACK)                             \
 481       intel->draw_point( intel, v0 );           \
 482    else                                         \
 483       intel_draw_point( intel, v0 );            \
 484 } while (0)
 485
 486
 487 /***********************************************************************
 488  *              Build render functions from dd templates               *
 489  ***********************************************************************/
 490
 491 #define INTEL_OFFSET_BIT        0x01
 492 #define INTEL_TWOSIDE_BIT       0x02
 493 #define INTEL_UNFILLED_BIT      0x04
 494 #define INTEL_FALLBACK_BIT      0x08
 495 #define INTEL_MAX_TRIFUNC       0x10
 496
 497
 498 static struct
 499 {
 500    tnl_points_func points;
 501    tnl_line_func line;
 502    tnl_triangle_func triangle;
 503    tnl_quad_func quad;
 504 } rast_tab[INTEL_MAX_TRIFUNC];
 505
 506
 507 #define DO_FALLBACK (IND & INTEL_FALLBACK_BIT)
 508 #define DO_OFFSET   (IND & INTEL_OFFSET_BIT)
 509 #define DO_UNFILLED (IND & INTEL_UNFILLED_BIT)
 510 #define DO_TWOSIDE  (IND & INTEL_TWOSIDE_BIT)
 511 #define DO_FLAT      0
 512 #define DO_TRI       1
 513 #define DO_QUAD      1
 514 #define DO_LINE      1
 515 #define DO_POINTS    1
 516 #define DO_FULL_QUAD 1
 517
 518 #define HAVE_RGBA         1
 519 #define HAVE_SPEC         1
 520 #define HAVE_BACK_COLORS  0
 521 #define HAVE_HW_FLATSHADE 1
 522 #define VERTEX            intelVertex
 523 #define TAB               rast_tab
 524
 525 /* Only used to pull back colors into vertices (ie, we know color is
 526  * floating point).
 527  */
 528 #define INTEL_COLOR( dst, src )                         \
 529 do {                                                    \
 530    UNCLAMPED_FLOAT_TO_UBYTE((dst)[0], (src)[2]);        \
 531    UNCLAMPED_FLOAT_TO_UBYTE((dst)[1], (src)[1]);        \
 532    UNCLAMPED_FLOAT_TO_UBYTE((dst)[2], (src)[0]);        \
 533    UNCLAMPED_FLOAT_TO_UBYTE((dst)[3], (src)[3]);        \
 534 } while (0)
 535
 536 #define INTEL_SPEC( dst, src )                          \
 537 do {                                                    \
 538    UNCLAMPED_FLOAT_TO_UBYTE((dst)[0], (src)[2]);        \
 539    UNCLAMPED_FLOAT_TO_UBYTE((dst)[1], (src)[1]);        \
 540    UNCLAMPED_FLOAT_TO_UBYTE((dst)[2], (src)[0]);        \
 541 } while (0)
 542
 543
 544 #define DEPTH_SCALE intel->polygon_offset_scale
 545 #define UNFILLED_TRI unfilled_tri
 546 #define UNFILLED_QUAD unfilled_quad
 547 #define VERT_X(_v) _v->v.x
 548 #define VERT_Y(_v) _v->v.y
 549 #define VERT_Z(_v) _v->v.z
 550 #define AREA_IS_CCW( a ) (a > 0)
 551 #define GET_VERTEX(e) (intel->verts + (e * intel->vertex_size * sizeof(GLuint)))
 552
 553 #define VERT_SET_RGBA( v, c )    if (coloroffset) INTEL_COLOR( v->ub4[coloroffset], c )
 554 #define VERT_COPY_RGBA( v0, v1 ) if (coloroffset) v0->ui[coloroffset] = v1->ui[coloroffset]
 555 #define VERT_SAVE_RGBA( idx )    if (coloroffset) color[idx] = v[idx]->ui[coloroffset]
 556 #define VERT_RESTORE_RGBA( idx ) if (coloroffset) v[idx]->ui[coloroffset] = color[idx]
 557
 558 #define VERT_SET_SPEC( v, c )    if (specoffset) INTEL_SPEC( v->ub4[specoffset], c )
 559 #define VERT_COPY_SPEC( v0, v1 ) if (specoffset) COPY_3V(v0->ub4[specoffset], v1->ub4[specoffset])
 560 #define VERT_SAVE_SPEC( idx )    if (specoffset) spec[idx] = v[idx]->ui[specoffset]
 561 #define VERT_RESTORE_SPEC( idx ) if (specoffset) v[idx]->ui[specoffset] = spec[idx]
 562
 563 #define LOCAL_VARS(n)                                                   \
 564    struct intel_context *intel = intel_context(ctx);                    \
 565    GLuint color[n] = { 0, }, spec[n] = { 0, };                          \
 566    GLuint coloroffset = intel->coloroffset;                             \
 567    GLboolean specoffset = intel->specoffset;                            \
 568    (void) color; (void) spec; (void) coloroffset; (void) specoffset;
 569
 570
 571 /***********************************************************************
 572  *                Helpers for rendering unfilled primitives            *
 573  ***********************************************************************/
 574
 575 static const GLuint hw_prim[GL_POLYGON + 1] = {
 576    PRIM3D_POINTLIST,
 577    PRIM3D_LINELIST,
 578    PRIM3D_LINELIST,
 579    PRIM3D_LINELIST,
 580    PRIM3D_TRILIST,
 581    PRIM3D_TRILIST,
 582    PRIM3D_TRILIST,
 583    PRIM3D_TRILIST,
 584    PRIM3D_TRILIST,
 585    PRIM3D_TRILIST
 586 };
 587
 588 #define RASTERIZE(x) intelRasterPrimitive( ctx, x, hw_prim[x] )
 589 #define RENDER_PRIMITIVE intel->render_primitive
 590 #define TAG(x) x
 591 #define IND INTEL_FALLBACK_BIT
 592 #include "tnl_dd/t_dd_unfilled.h"
 593 #undef IND
 594
 595 /***********************************************************************
 596  *                      Generate GL render functions                   *
 597  ***********************************************************************/
 598
 599 #define IND (0)
 600 #define TAG(x) x
 601 #include "tnl_dd/t_dd_tritmp.h"
 602
 603 #define IND (INTEL_OFFSET_BIT)
 604 #define TAG(x) x##_offset
 605 #include "tnl_dd/t_dd_tritmp.h"
 606
 607 #define IND (INTEL_TWOSIDE_BIT)
 608 #define TAG(x) x##_twoside
 609 #include "tnl_dd/t_dd_tritmp.h"
 610
 611 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT)
 612 #define TAG(x) x##_twoside_offset
 613 #include "tnl_dd/t_dd_tritmp.h"
 614
 615 #define IND (INTEL_UNFILLED_BIT)
 616 #define TAG(x) x##_unfilled
 617 #include "tnl_dd/t_dd_tritmp.h"
 618
 619 #define IND (INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT)
 620 #define TAG(x) x##_offset_unfilled
 621 #include "tnl_dd/t_dd_tritmp.h"
 622
 623 #define IND (INTEL_TWOSIDE_BIT|INTEL_UNFILLED_BIT)
 624 #define TAG(x) x##_twoside_unfilled
 625 #include "tnl_dd/t_dd_tritmp.h"
 626
 627 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT)
 628 #define TAG(x) x##_twoside_offset_unfilled
 629 #include "tnl_dd/t_dd_tritmp.h"
 630
 631 #define IND (INTEL_FALLBACK_BIT)
 632 #define TAG(x) x##_fallback
 633 #include "tnl_dd/t_dd_tritmp.h"
 634
 635 #define IND (INTEL_OFFSET_BIT|INTEL_FALLBACK_BIT)
 636 #define TAG(x) x##_offset_fallback
 637 #include "tnl_dd/t_dd_tritmp.h"
 638
 639 #define IND (INTEL_TWOSIDE_BIT|INTEL_FALLBACK_BIT)
 640 #define TAG(x) x##_twoside_fallback
 641 #include "tnl_dd/t_dd_tritmp.h"
 642
 643 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT|INTEL_FALLBACK_BIT)
 644 #define TAG(x) x##_twoside_offset_fallback
 645 #include "tnl_dd/t_dd_tritmp.h"
 646
 647 #define IND (INTEL_UNFILLED_BIT|INTEL_FALLBACK_BIT)
 648 #define TAG(x) x##_unfilled_fallback
 649 #include "tnl_dd/t_dd_tritmp.h"
 650
 651 #define IND (INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT|INTEL_FALLBACK_BIT)
 652 #define TAG(x) x##_offset_unfilled_fallback
 653 #include "tnl_dd/t_dd_tritmp.h"
 654
 655 #define IND (INTEL_TWOSIDE_BIT|INTEL_UNFILLED_BIT|INTEL_FALLBACK_BIT)
 656 #define TAG(x) x##_twoside_unfilled_fallback
 657 #include "tnl_dd/t_dd_tritmp.h"
 658
 659 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT| \
 660              INTEL_FALLBACK_BIT)
 661 #define TAG(x) x##_twoside_offset_unfilled_fallback
 662 #include "tnl_dd/t_dd_tritmp.h"
 663
 664
 665 static void
 666 init_rast_tab(void)
 667 {
 668    init();
 669    init_offset();
 670    init_twoside();
 671    init_twoside_offset();
 672    init_unfilled();
 673    init_offset_unfilled();
 674    init_twoside_unfilled();
 675    init_twoside_offset_unfilled();
 676    init_fallback();
 677    init_offset_fallback();
 678    init_twoside_fallback();
 679    init_twoside_offset_fallback();
 680    init_unfilled_fallback();
 681    init_offset_unfilled_fallback();
 682    init_twoside_unfilled_fallback();
 683    init_twoside_offset_unfilled_fallback();
 684 }
 685
 686
 687 /***********************************************************************
 688  *                    Rasterization fallback helpers                   *
 689  ***********************************************************************/
 690
 691
 692 /* This code is hit only when a mix of accelerated and unaccelerated
 693  * primitives are being drawn, and only for the unaccelerated
 694  * primitives.
 695  */
 696 static void
 697 intel_fallback_tri(struct intel_context *intel,
 698                    intelVertex * v0, intelVertex * v1, intelVertex * v2)
 699 {
 700    GLcontext *ctx = &intel->ctx;
 701    SWvertex v[3];
 702
 703    if (0)
 704       fprintf(stderr, "\n%s\n", __FUNCTION__);
 705
 706    INTEL_FIREVERTICES(intel);
 707
 708    _swsetup_Translate(ctx, v0, &v[0]);
 709    _swsetup_Translate(ctx, v1, &v[1]);
 710    _swsetup_Translate(ctx, v2, &v[2]);
 711    intelSpanRenderStart(ctx);
 712    _swrast_Triangle(ctx, &v[0], &v[1], &v[2]);
 713    intelSpanRenderFinish(ctx);
 714 }
 715
 716
 717 static void
 718 intel_fallback_line(struct intel_context *intel,
 719                     intelVertex * v0, intelVertex * v1)
 720 {
 721    GLcontext *ctx = &intel->ctx;
 722    SWvertex v[2];
 723
 724    if (0)
 725       fprintf(stderr, "\n%s\n", __FUNCTION__);
 726
 727    INTEL_FIREVERTICES(intel);
 728
 729    _swsetup_Translate(ctx, v0, &v[0]);
 730    _swsetup_Translate(ctx, v1, &v[1]);
 731    intelSpanRenderStart(ctx);
 732    _swrast_Line(ctx, &v[0], &v[1]);
 733    intelSpanRenderFinish(ctx);
 734 }
 735
 736 static void
 737 intel_fallback_point(struct intel_context *intel,
 738                      intelVertex * v0)
 739 {
 740    GLcontext *ctx = &intel->ctx;
 741    SWvertex v[1];
 742
 743    if (0)
 744       fprintf(stderr, "\n%s\n", __FUNCTION__);
 745
 746    INTEL_FIREVERTICES(intel);
 747
 748    _swsetup_Translate(ctx, v0, &v[0]);
 749    intelSpanRenderStart(ctx);
 750    _swrast_Point(ctx, &v[0]);
 751    intelSpanRenderFinish(ctx);
 752 }
 753
 754
 755 /**********************************************************************/
 756 /*               Render unclipped begin/end objects                   */
 757 /**********************************************************************/
 758
 759 #define IND 0
 760 #define V(x) (intelVertex *)(vertptr + ((x)*vertsize*sizeof(GLuint)))
 761 #define RENDER_POINTS( start, count )   \
 762    for ( ; start < count ; start++) POINT( V(ELT(start)) );
 763 #define RENDER_LINE( v0, v1 )         LINE( V(v0), V(v1) )
 764 #define RENDER_TRI(  v0, v1, v2 )     TRI(  V(v0), V(v1), V(v2) )
 765 #define RENDER_QUAD( v0, v1, v2, v3 ) QUAD( V(v0), V(v1), V(v2), V(v3) )
 766 #define INIT(x) intelRenderPrimitive( ctx, x )
 767 #undef LOCAL_VARS
 768 #define LOCAL_VARS                                              \
 769     struct intel_context *intel = intel_context(ctx);                   \
 770     GLubyte *vertptr = (GLubyte *)intel->verts;                 \
 771     const GLuint vertsize = intel->vertex_size;         \
 772     const GLuint * const elt = TNL_CONTEXT(ctx)->vb.Elts;       \
 773     (void) elt;
 774 #define RESET_STIPPLE
 775 #define RESET_OCCLUSION
 776 #define PRESERVE_VB_DEFS
 777 #define ELT(x) x
 778 #define TAG(x) intel_##x##_verts
 779 #include "tnl/t_vb_rendertmp.h"
 780 #undef ELT
 781 #undef TAG
 782 #define TAG(x) intel_##x##_elts
 783 #define ELT(x) elt[x]
 784 #include "tnl/t_vb_rendertmp.h"
 785
 786 /**********************************************************************/
 787 /*                   Render clipped primitives                        */
 788 /**********************************************************************/
 789
 790
 791
 792 static void
 793 intelRenderClippedPoly(GLcontext * ctx, const GLuint * elts, GLuint n)
 794 {
 795    struct intel_context *intel = intel_context(ctx);
 796    TNLcontext *tnl = TNL_CONTEXT(ctx);
 797    struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
 798    GLuint prim = intel->render_primitive;
 799
 800    /* Render the new vertices as an unclipped polygon.
 801     */
 802    {
 803       GLuint *tmp = VB->Elts;
 804       VB->Elts = (GLuint *) elts;
 805       tnl->Driver.Render.PrimTabElts[GL_POLYGON] (ctx, 0, n,
 806                                                   PRIM_BEGIN | PRIM_END);
 807       VB->Elts = tmp;
 808    }
 809
 810    /* Restore the render primitive
 811     */
 812    if (prim != GL_POLYGON)
 813       tnl->Driver.Render.PrimitiveNotify(ctx, prim);
 814 }
 815
 816 static void
 817 intelRenderClippedLine(GLcontext * ctx, GLuint ii, GLuint jj)
 818 {
 819    TNLcontext *tnl = TNL_CONTEXT(ctx);
 820
 821    tnl->Driver.Render.Line(ctx, ii, jj);
 822 }
 823
 824 static void
 825 intelFastRenderClippedPoly(GLcontext * ctx, const GLuint * elts, GLuint n)
 826 {
 827    struct intel_context *intel = intel_context(ctx);
 828    const GLuint vertsize = intel->vertex_size;
 829    GLuint *vb = intel_get_prim_space(intel, (n - 2) * 3);
 830    GLubyte *vertptr = (GLubyte *) intel->verts;
 831    const GLuint *start = (const GLuint *) V(elts[0]);
 832    int i, j;
 833
 834    for (i = 2; i < n; i++) {
 835       COPY_DWORDS(j, vb, vertsize, V(elts[i - 1]));
 836       COPY_DWORDS(j, vb, vertsize, V(elts[i]));
 837       COPY_DWORDS(j, vb, vertsize, start);
 838    }
 839 }
 840
 841 /**********************************************************************/
 842 /*                    Choose render functions                         */
 843 /**********************************************************************/
 844
 845
 846
 847
 848 #define ANY_FALLBACK_FLAGS (DD_LINE_STIPPLE | DD_TRI_STIPPLE | DD_POINT_ATTEN | DD_POINT_SMOOTH | DD_TRI_SMOOTH)
 849 #define ANY_RASTER_FLAGS (DD_TRI_LIGHT_TWOSIDE | DD_TRI_OFFSET | DD_TRI_UNFILLED)
 850
 851 void
 852 intelChooseRenderState(GLcontext * ctx)
 853 {
 854    TNLcontext *tnl = TNL_CONTEXT(ctx);
 855    struct intel_context *intel = intel_context(ctx);
 856    GLuint flags = ctx->_TriangleCaps;
 857    const struct gl_fragment_program *fprog = ctx->FragmentProgram._Current;
 858    GLboolean have_wpos = (fprog && (fprog->Base.InputsRead & FRAG_BIT_WPOS));
 859    GLuint index = 0;
 860
 861    if (INTEL_DEBUG & DEBUG_STATE)
 862       fprintf(stderr, "\n%s\n", __FUNCTION__);
 863
 864    if ((flags & (ANY_FALLBACK_FLAGS | ANY_RASTER_FLAGS)) || have_wpos) {
 865
 866       if (flags & ANY_RASTER_FLAGS) {
 867          if (flags & DD_TRI_LIGHT_TWOSIDE)
 868             index |= INTEL_TWOSIDE_BIT;
 869          if (flags & DD_TRI_OFFSET)
 870             index |= INTEL_OFFSET_BIT;
 871          if (flags & DD_TRI_UNFILLED)
 872             index |= INTEL_UNFILLED_BIT;
 873       }
 874
 875       if (have_wpos) {
 876          intel->draw_point = intel_wpos_point;
 877          intel->draw_line = intel_wpos_line;
 878          intel->draw_tri = intel_wpos_triangle;
 879
 880          /* Make sure these get called:
 881           */
 882          index |= INTEL_FALLBACK_BIT;
 883       }
 884       else {
 885          intel->draw_point = intel_draw_point;
 886          intel->draw_line = intel_draw_line;
 887          intel->draw_tri = intel_draw_triangle;
 888       }
 889
 890       /* Hook in fallbacks for specific primitives.
 891        */
 892       if (flags & ANY_FALLBACK_FLAGS) {
 893          if (flags & DD_LINE_STIPPLE)
 894             intel->draw_line = intel_fallback_line;
 895
 896          if ((flags & DD_TRI_STIPPLE) && !intel->hw_stipple)
 897             intel->draw_tri = intel_fallback_tri;
 898
 899          if (flags & DD_TRI_SMOOTH) {
 900             if (intel->strict_conformance)
 901                intel->draw_tri = intel_fallback_tri;
 902          }
 903
 904          if (flags & DD_POINT_ATTEN) {
 905             if (0)
 906                intel->draw_point = intel_atten_point;
 907             else
 908                intel->draw_point = intel_fallback_point;
 909          }
 910
 911          if (flags & DD_POINT_SMOOTH) {
 912             if (intel->strict_conformance)
 913                intel->draw_point = intel_fallback_point;
 914          }
 915
 916          index |= INTEL_FALLBACK_BIT;
 917       }
 918    }
 919
 920    if (intel->RenderIndex != index) {
 921       intel->RenderIndex = index;
 922
 923       tnl->Driver.Render.Points = rast_tab[index].points;
 924       tnl->Driver.Render.Line = rast_tab[index].line;
 925       tnl->Driver.Render.Triangle = rast_tab[index].triangle;
 926       tnl->Driver.Render.Quad = rast_tab[index].quad;
 927
 928       if (index == 0) {
 929          tnl->Driver.Render.PrimTabVerts = intel_render_tab_verts;
 930          tnl->Driver.Render.PrimTabElts = intel_render_tab_elts;
 931          tnl->Driver.Render.ClippedLine = line; /* from tritmp.h */
 932          tnl->Driver.Render.ClippedPolygon = intelFastRenderClippedPoly;
 933       }
 934       else {
 935          tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
 936          tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
 937          tnl->Driver.Render.ClippedLine = intelRenderClippedLine;
 938          tnl->Driver.Render.ClippedPolygon = intelRenderClippedPoly;
 939       }
 940    }
 941 }
 942
 943 static const GLenum reduced_prim[GL_POLYGON + 1] = {
 944    GL_POINTS,
 945    GL_LINES,
 946    GL_LINES,
 947    GL_LINES,
 948    GL_TRIANGLES,
 949    GL_TRIANGLES,
 950    GL_TRIANGLES,
 951    GL_TRIANGLES,
 952    GL_TRIANGLES,
 953    GL_TRIANGLES
 954 };
 955
 956
 957 /**********************************************************************/
 958 /*                 High level hooks for t_vb_render.c                 */
 959 /**********************************************************************/
 960
 961
 962
 963
 964 static void
 965 intelRunPipeline(GLcontext * ctx)
 966 {
 967    struct intel_context *intel = intel_context(ctx);
 968
 969    _mesa_lock_context_textures(ctx);
 970
 971    if (ctx->NewState)
 972       _mesa_update_state_locked(ctx);
 973
 974    if (intel->NewGLState) {
 975       if (intel->NewGLState & _NEW_TEXTURE) {
 976          intel->vtbl.update_texture_state(intel);
 977       }
 978
 979       if (!intel->Fallback) {
 980          if (intel->NewGLState & _INTEL_NEW_RENDERSTATE)
 981             intelChooseRenderState(ctx);
 982       }
 983
 984       intel->NewGLState = 0;
 985    }
 986
 987    _tnl_run_pipeline(ctx);
 988
 989    _mesa_unlock_context_textures(ctx);
 990 }
 991
 992 static void
 993 intelRenderStart(GLcontext * ctx)
 994 {
 995    struct intel_context *intel = intel_context(ctx);
 996
 997    intel->vtbl.render_start(intel_context(ctx));
 998    intel->vtbl.emit_state(intel);
 999 }
1000
1001 static void
1002 intelRenderFinish(GLcontext * ctx)
1003 {
1004    struct intel_context *intel = intel_context(ctx);
1005
1006    if (intel->RenderIndex & INTEL_FALLBACK_BIT)
1007       _swrast_flush(ctx);
1008
1009    INTEL_FIREVERTICES(intel);
1010 }
1011
1012
1013
1014
1015  /* System to flush dma and emit state changes based on the rasterized
1016   * primitive.
1017   */
1018 static void
1019 intelRasterPrimitive(GLcontext * ctx, GLenum rprim, GLuint hwprim)
1020 {
1021    struct intel_context *intel = intel_context(ctx);
1022
1023    if (0)
1024       fprintf(stderr, "%s %s %x\n", __FUNCTION__,
1025               _mesa_lookup_enum_by_nr(rprim), hwprim);
1026
1027    intel->vtbl.reduced_primitive_state(intel, rprim);
1028
1029    /* Start a new primitive.  Arrange to have it flushed later on.
1030     */
1031    if (hwprim != intel->prim.primitive) {
1032       INTEL_FIREVERTICES(intel);
1033
1034       intel_set_prim(intel, hwprim);
1035    }
1036 }
1037
1038
1039  /*
1040   */
1041 static void
1042 intelRenderPrimitive(GLcontext * ctx, GLenum prim)
1043 {
1044    struct intel_context *intel = intel_context(ctx);
1045
1046    if (0)
1047       fprintf(stderr, "%s %s\n", __FUNCTION__, _mesa_lookup_enum_by_nr(prim));
1048
1049    /* Let some clipping routines know which primitive they're dealing
1050     * with.
1051     */
1052    intel->render_primitive = prim;
1053
1054    /* Shortcircuit this when called from t_dd_rendertmp.h for unfilled
1055     * triangles.  The rasterized primitive will always be reset by
1056     * lower level functions in that case, potentially pingponging the
1057     * state:
1058     */
1059    if (reduced_prim[prim] == GL_TRIANGLES &&
1060        (ctx->_TriangleCaps & DD_TRI_UNFILLED))
1061       return;
1062
1063    /* Set some primitive-dependent state and Start? a new primitive.
1064     */
1065    intelRasterPrimitive(ctx, reduced_prim[prim], hw_prim[prim]);
1066 }
1067
1068
1069  /**********************************************************************/
1070  /*           Transition to/from hardware rasterization.               */
1071  /**********************************************************************/
1072
1073 static char *fallbackStrings[] = {
1074    [0] = "Draw buffer",
1075    [1] = "Read buffer",
1076    [2] = "Depth buffer",
1077    [3] = "Stencil buffer",
1078    [4] = "User disable",
1079    [5] = "Render mode",
1080
1081    [12] = "Texture",
1082    [13] = "Color mask",
1083    [14] = "Stencil",
1084    [15] = "Stipple",
1085    [16] = "Program",
1086    [17] = "Logic op",
1087    [18] = "Smooth polygon",
1088    [19] = "Smooth point",
1089 };
1090
1091
1092 static char *
1093 getFallbackString(GLuint bit)
1094 {
1095    int i = 0;
1096    while (bit > 1) {
1097       i++;
1098       bit >>= 1;
1099    }
1100    return fallbackStrings[i];
1101 }
1102
1103
1104
1105 void
1106 intelFallback(struct intel_context *intel, GLuint bit, GLboolean mode)
1107 {
1108    GLcontext *ctx = &intel->ctx;
1109    TNLcontext *tnl = TNL_CONTEXT(ctx);
1110    GLuint oldfallback = intel->Fallback;
1111
1112    if (mode) {
1113       intel->Fallback |= bit;
1114       if (oldfallback == 0) {
1115          intelFlush(ctx);
1116          if (INTEL_DEBUG & DEBUG_FALLBACKS)
1117             fprintf(stderr, "ENTER FALLBACK %x: %s\n",
1118                     bit, getFallbackString(bit));
1119          _swsetup_Wakeup(ctx);
1120          intel->RenderIndex = ~0;
1121       }
1122    }
1123    else {
1124       intel->Fallback &= ~bit;
1125       if (oldfallback == bit) {
1126          _swrast_flush(ctx);
1127          if (INTEL_DEBUG & DEBUG_FALLBACKS)
1128             fprintf(stderr, "LEAVE FALLBACK %s\n", getFallbackString(bit));
1129          tnl->Driver.Render.Start = intelRenderStart;
1130          tnl->Driver.Render.PrimitiveNotify = intelRenderPrimitive;
1131          tnl->Driver.Render.Finish = intelRenderFinish;
1132          tnl->Driver.Render.BuildVertices = _tnl_build_vertices;
1133          tnl->Driver.Render.CopyPV = _tnl_copy_pv;
1134          tnl->Driver.Render.Interp = _tnl_interp;
1135
1136          _tnl_invalidate_vertex_state(ctx, ~0);
1137          _tnl_invalidate_vertices(ctx, ~0);
1138          _tnl_install_attrs(ctx,
1139                             intel->vertex_attrs,
1140                             intel->vertex_attr_count,
1141                             intel->ViewportMatrix.m, 0);
1142
1143          intel->NewGLState |= _INTEL_NEW_RENDERSTATE;
1144       }
1145    }
1146 }
1147
1148 union fi
1149 {
1150    GLfloat f;
1151    GLint i;
1152 };
1153
1154
1155 /**********************************************************************/
1156 /*             Used only with the metaops callbacks.                  */
1157 /**********************************************************************/
1158 static void
1159 intel_meta_draw_poly(struct intel_context *intel,
1160                      GLuint n,
1161                      GLfloat xy[][2],
1162                      GLfloat z, GLuint color, GLfloat tex[][2])
1163 {
1164    union fi *vb;
1165    GLint i;
1166    GLboolean was_locked = intel->locked;
1167    unsigned int saved_vertex_size = intel->vertex_size;
1168
1169    if (!was_locked)
1170        LOCK_HARDWARE(intel);
1171
1172    intel->vertex_size = 6;
1173
1174    /* All 3d primitives should be emitted with LOOP_CLIPRECTS,
1175     * otherwise the drawing origin (DR4) might not be set correctly.
1176     */
1177    intel_set_prim(intel, PRIM3D_TRIFAN);
1178    vb = (union fi *) intel_get_prim_space(intel, n);
1179
1180    for (i = 0; i < n; i++) {
1181       vb[0].f = xy[i][0];
1182       vb[1].f = xy[i][1];
1183       vb[2].f = z;
1184       vb[3].i = color;
1185       vb[4].f = tex[i][0];
1186       vb[5].f = tex[i][1];
1187       vb += 6;
1188    }
1189
1190    INTEL_FIREVERTICES(intel);
1191
1192    intel->vertex_size = saved_vertex_size;
1193
1194    if (!was_locked)
1195        UNLOCK_HARDWARE(intel);
1196 }
1197
1198 static void
1199 intel_meta_draw_quad(struct intel_context *intel,
1200                      GLfloat x0, GLfloat x1,
1201                      GLfloat y0, GLfloat y1,
1202                      GLfloat z,
1203                      GLuint color,
1204                      GLfloat s0, GLfloat s1, GLfloat t0, GLfloat t1)
1205 {
1206    GLfloat xy[4][2];
1207    GLfloat tex[4][2];
1208
1209    xy[0][0] = x0;
1210    xy[0][1] = y0;
1211    xy[1][0] = x1;
1212    xy[1][1] = y0;
1213    xy[2][0] = x1;
1214    xy[2][1] = y1;
1215    xy[3][0] = x0;
1216    xy[3][1] = y1;
1217
1218    tex[0][0] = s0;
1219    tex[0][1] = t0;
1220    tex[1][0] = s1;
1221    tex[1][1] = t0;
1222    tex[2][0] = s1;
1223    tex[2][1] = t1;
1224    tex[3][0] = s0;
1225    tex[3][1] = t1;
1226
1227    intel_meta_draw_poly(intel, 4, xy, z, color, tex);
1228 }
1229
1230
1231
1232 /**********************************************************************/
1233 /*                            Initialization.                         */
1234 /**********************************************************************/
1235
1236
1237 void
1238 intelInitTriFuncs(GLcontext * ctx)
1239 {
1240    struct intel_context *intel = intel_context(ctx);
1241    TNLcontext *tnl = TNL_CONTEXT(ctx);
1242    static int firsttime = 1;
1243
1244    if (firsttime) {
1245       init_rast_tab();
1246       firsttime = 0;
1247    }
1248
1249    tnl->Driver.RunPipeline = intelRunPipeline;
1250    tnl->Driver.Render.Start = intelRenderStart;
1251    tnl->Driver.Render.Finish = intelRenderFinish;
1252    tnl->Driver.Render.PrimitiveNotify = intelRenderPrimitive;
1253    tnl->Driver.Render.ResetLineStipple = _swrast_ResetLineStipple;
1254    tnl->Driver.Render.BuildVertices = _tnl_build_vertices;
1255    tnl->Driver.Render.CopyPV = _tnl_copy_pv;
1256    tnl->Driver.Render.Interp = _tnl_interp;
1257
1258    intel->vtbl.meta_draw_quad = intel_meta_draw_quad;
1259 }