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