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 #include "glheader.h"
  29 #include "context.h"
  30 #include "macros.h"
  31 #include "enums.h"
  32 #include "texobj.h"
  33 #include "state.h"
  34 #include "dd.h"
  35
  36 #include "swrast/swrast.h"
  37 #include "swrast_setup/swrast_setup.h"
  38 #include "tnl/t_context.h"
  39 #include "tnl/t_pipeline.h"
  40 #include "tnl/t_vertex.h"
  41
  42 #include "intel_screen.h"
  43 #include "intel_context.h"
  44 #include "intel_tris.h"
  45 #include "intel_batchbuffer.h"
  46 #include "intel_buffers.h"
  47 #include "intel_reg.h"
  48 #include "intel_span.h"
  49 #include "intel_tex.h"
  50
  51 static void intelRenderPrimitive(GLcontext * ctx, GLenum prim);
  52 static void intelRasterPrimitive(GLcontext * ctx, GLenum rprim,
  53                                  GLuint hwprim);
  54
  55 /*
  56  */
  57 static void
  58 intel_flush_inline_primitive(struct intel_context *intel)
  59 {
  60    GLuint used = intel->batch->ptr - intel->prim.start_ptr;
  61
  62    assert(intel->prim.primitive != ~0);
  63
  64 /*    _mesa_printf("/\n"); */
  65
  66    if (used < 8)
  67       goto do_discard;
  68
  69    *(int *) intel->prim.start_ptr = (_3DPRIMITIVE |
  70                                      intel->prim.primitive | (used / 4 - 2));
  71
  72    goto finished;
  73
  74  do_discard:
  75    intel->batch->ptr -= used;
  76
  77  finished:
  78    intel->prim.primitive = ~0;
  79    intel->prim.start_ptr = 0;
  80    intel->prim.flush = 0;
  81 }
  82
  83
  84 /* Emit a primitive referencing vertices in a vertex buffer.
  85  */
  86 void
  87 intelStartInlinePrimitive(struct intel_context *intel,
  88                           GLuint prim, GLuint batch_flags)
  89 {
  90    BATCH_LOCALS;
  91
  92    intel_wait_flips(intel);
  93
  94    intel->vtbl.emit_state(intel);
  95
  96    intel->no_batch_wrap = GL_TRUE;
  97
  98 /*    _mesa_printf("%s *", __progname); */
  99
 100    /* Emit a slot which will be filled with the inline primitive
 101     * command later.
 102     */
 103    BEGIN_BATCH(2, batch_flags);
 104    OUT_BATCH(0);
 105
 106    assert((intel->batch->dirty_state & (1<<1)) == 0);
 107
 108    intel->prim.start_ptr = intel->batch->ptr;
 109    intel->prim.primitive = prim;
 110    intel->prim.flush = intel_flush_inline_primitive;
 111
 112    OUT_BATCH(0);
 113    ADVANCE_BATCH();
 114
 115    intel->no_batch_wrap = GL_FALSE;
 116
 117 /*    _mesa_printf(">"); */
 118 }
 119
 120
 121 void
 122 intelWrapInlinePrimitive(struct intel_context *intel)
 123 {
 124    GLuint prim = intel->prim.primitive;
 125    enum cliprect_mode cliprect_mode = intel->batch->cliprect_mode;
 126
 127    intel_flush_inline_primitive(intel);
 128    intel_batchbuffer_flush(intel->batch);
 129    intelStartInlinePrimitive(intel, prim, cliprect_mode);  /* ??? */
 130 }
 131
 132 GLuint *
 133 intelExtendInlinePrimitive(struct intel_context *intel, GLuint dwords)
 134 {
 135    GLuint sz = dwords * sizeof(GLuint);
 136    GLuint *ptr;
 137
 138    assert(intel->prim.flush == intel_flush_inline_primitive);
 139
 140    if (intel_batchbuffer_space(intel->batch) < sz)
 141       intelWrapInlinePrimitive(intel);
 142
 143 /*    _mesa_printf("."); */
 144
 145    intel->vtbl.assert_not_dirty(intel);
 146
 147    ptr = (GLuint *) intel->batch->ptr;
 148    intel->batch->ptr += sz;
 149
 150    return ptr;
 151 }
 152
 153
 154
 155 /***********************************************************************
 156  *                    Emit primitives as inline vertices               *
 157  ***********************************************************************/
 158
 159 #ifdef __i386__
 160 #define COPY_DWORDS( j, vb, vertsize, v )                       \
 161 do {                                                            \
 162    int __tmp;                                                   \
 163    __asm__ __volatile__( "rep ; movsl"                          \
 164                          : "=%c" (j), "=D" (vb), "=S" (__tmp)   \
 165                          : "0" (vertsize),                      \
 166                          "D" ((long)vb),                        \
 167                          "S" ((long)v) );                       \
 168 } while (0)
 169 #else
 170 #define COPY_DWORDS( j, vb, vertsize, v )       \
 171 do {                                            \
 172    for ( j = 0 ; j < vertsize ; j++ ) {         \
 173       vb[j] = ((GLuint *)v)[j];                 \
 174    }                                            \
 175    vb += vertsize;                              \
 176 } while (0)
 177 #endif
 178
 179 static void
 180 intel_draw_quad(struct intel_context *intel,
 181                 intelVertexPtr v0,
 182                 intelVertexPtr v1, intelVertexPtr v2, intelVertexPtr v3)
 183 {
 184    GLuint vertsize = intel->vertex_size;
 185    GLuint *vb = intelExtendInlinePrimitive(intel, 6 * vertsize);
 186    int j;
 187
 188    COPY_DWORDS(j, vb, vertsize, v0);
 189    COPY_DWORDS(j, vb, vertsize, v1);
 190
 191    /* If smooth shading, draw like a trifan which gives better
 192     * rasterization.  Otherwise draw as two triangles with provoking
 193     * vertex in third position as required for flat shading.
 194     */
 195    if (intel->ctx.Light.ShadeModel == GL_FLAT) {
 196       COPY_DWORDS(j, vb, vertsize, v3);
 197       COPY_DWORDS(j, vb, vertsize, v1);
 198    }
 199    else {
 200       COPY_DWORDS(j, vb, vertsize, v2);
 201       COPY_DWORDS(j, vb, vertsize, v0);
 202    }
 203
 204    COPY_DWORDS(j, vb, vertsize, v2);
 205    COPY_DWORDS(j, vb, vertsize, v3);
 206 }
 207
 208 static void
 209 intel_draw_triangle(struct intel_context *intel,
 210                     intelVertexPtr v0, intelVertexPtr v1, intelVertexPtr v2)
 211 {
 212    GLuint vertsize = intel->vertex_size;
 213    GLuint *vb = intelExtendInlinePrimitive(intel, 3 * vertsize);
 214    int j;
 215
 216    COPY_DWORDS(j, vb, vertsize, v0);
 217    COPY_DWORDS(j, vb, vertsize, v1);
 218    COPY_DWORDS(j, vb, vertsize, v2);
 219 }
 220
 221
 222 static void
 223 intel_draw_line(struct intel_context *intel,
 224                 intelVertexPtr v0, intelVertexPtr v1)
 225 {
 226    GLuint vertsize = intel->vertex_size;
 227    GLuint *vb = intelExtendInlinePrimitive(intel, 2 * vertsize);
 228    int j;
 229
 230    COPY_DWORDS(j, vb, vertsize, v0);
 231    COPY_DWORDS(j, vb, vertsize, v1);
 232 }
 233
 234
 235 static void
 236 intel_draw_point(struct intel_context *intel, intelVertexPtr v0)
 237 {
 238    GLuint vertsize = intel->vertex_size;
 239    GLuint *vb = intelExtendInlinePrimitive(intel, vertsize);
 240    int j;
 241
 242    /* Adjust for sub pixel position -- still required for conform. */
 243    *(float *) &vb[0] = v0->v.x;
 244    *(float *) &vb[1] = v0->v.y;
 245    for (j = 2; j < vertsize; j++)
 246       vb[j] = v0->ui[j];
 247 }
 248
 249
 250
 251 /***********************************************************************
 252  *                Fixup for ARB_point_parameters                       *
 253  ***********************************************************************/
 254
 255 /* Currently not working - VERT_ATTRIB_POINTSIZE isn't correctly
 256  * represented in the fragment program InputsRead field.
 257  */
 258 static void
 259 intel_atten_point(struct intel_context *intel, intelVertexPtr v0)
 260 {
 261    GLcontext *ctx = &intel->ctx;
 262    GLfloat psz[4], col[4], restore_psz, restore_alpha;
 263
 264    _tnl_get_attr(ctx, v0, _TNL_ATTRIB_POINTSIZE, psz);
 265    _tnl_get_attr(ctx, v0, _TNL_ATTRIB_COLOR0, col);
 266
 267    restore_psz = psz[0];
 268    restore_alpha = col[3];
 269
 270    if (psz[0] >= ctx->Point.Threshold) {
 271       psz[0] = MIN2(psz[0], ctx->Point.MaxSize);
 272    }
 273    else {
 274       GLfloat dsize = psz[0] / ctx->Point.Threshold;
 275       psz[0] = MAX2(ctx->Point.Threshold, ctx->Point.MinSize);
 276       col[3] *= dsize * dsize;
 277    }
 278
 279    if (psz[0] < 1.0)
 280       psz[0] = 1.0;
 281
 282    if (restore_psz != psz[0] || restore_alpha != col[3]) {
 283       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_POINTSIZE, psz);
 284       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_COLOR0, col);
 285
 286       intel_draw_point(intel, v0);
 287
 288       psz[0] = restore_psz;
 289       col[3] = restore_alpha;
 290
 291       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_POINTSIZE, psz);
 292       _tnl_set_attr(ctx, v0, _TNL_ATTRIB_COLOR0, col);
 293    }
 294    else
 295       intel_draw_point(intel, v0);
 296 }
 297
 298
 299
 300
 301
 302 /***********************************************************************
 303  *                Fixup for I915 WPOS texture coordinate                *
 304  ***********************************************************************/
 305
 306
 307
 308 static void
 309 intel_wpos_triangle(struct intel_context *intel,
 310                     intelVertexPtr v0, intelVertexPtr v1, intelVertexPtr v2)
 311 {
 312    GLuint offset = intel->wpos_offset;
 313    GLuint size = intel->wpos_size;
 314
 315    __memcpy(((char *) v0) + offset, v0, size);
 316    __memcpy(((char *) v1) + offset, v1, size);
 317    __memcpy(((char *) v2) + offset, v2, size);
 318
 319    intel_draw_triangle(intel, v0, v1, v2);
 320 }
 321
 322
 323 static void
 324 intel_wpos_line(struct intel_context *intel,
 325                 intelVertexPtr v0, intelVertexPtr v1)
 326 {
 327    GLuint offset = intel->wpos_offset;
 328    GLuint size = intel->wpos_size;
 329
 330    __memcpy(((char *) v0) + offset, v0, size);
 331    __memcpy(((char *) v1) + offset, v1, size);
 332
 333    intel_draw_line(intel, v0, v1);
 334 }
 335
 336
 337 static void
 338 intel_wpos_point(struct intel_context *intel, intelVertexPtr v0)
 339 {
 340    GLuint offset = intel->wpos_offset;
 341    GLuint size = intel->wpos_size;
 342
 343    __memcpy(((char *) v0) + offset, v0, size);
 344
 345    intel_draw_point(intel, v0);
 346 }
 347
 348
 349
 350
 351
 352
 353 /***********************************************************************
 354  *          Macros for t_dd_tritmp.h to draw basic primitives          *
 355  ***********************************************************************/
 356
 357 #define TRI( a, b, c )                          \
 358 do {                                            \
 359    if (DO_FALLBACK)                             \
 360       intel->draw_tri( intel, a, b, c );        \
 361    else                                         \
 362       intel_draw_triangle( intel, a, b, c );    \
 363 } while (0)
 364
 365 #define QUAD( a, b, c, d )                      \
 366 do {                                            \
 367    if (DO_FALLBACK) {                           \
 368       intel->draw_tri( intel, a, b, d );        \
 369       intel->draw_tri( intel, b, c, d );        \
 370    } else                                       \
 371       intel_draw_quad( intel, a, b, c, d );     \
 372 } while (0)
 373
 374 #define LINE( v0, v1 )                          \
 375 do {                                            \
 376    if (DO_FALLBACK)                             \
 377       intel->draw_line( intel, v0, v1 );        \
 378    else                                         \
 379       intel_draw_line( intel, v0, v1 );         \
 380 } while (0)
 381
 382 #define POINT( v0 )                             \
 383 do {                                            \
 384    if (DO_FALLBACK)                             \
 385       intel->draw_point( intel, v0 );           \
 386    else                                         \
 387       intel_draw_point( intel, v0 );            \
 388 } while (0)
 389
 390
 391 /***********************************************************************
 392  *              Build render functions from dd templates               *
 393  ***********************************************************************/
 394
 395 #define INTEL_OFFSET_BIT        0x01
 396 #define INTEL_TWOSIDE_BIT       0x02
 397 #define INTEL_UNFILLED_BIT      0x04
 398 #define INTEL_FALLBACK_BIT      0x08
 399 #define INTEL_MAX_TRIFUNC       0x10
 400
 401
 402 static struct
 403 {
 404    tnl_points_func points;
 405    tnl_line_func line;
 406    tnl_triangle_func triangle;
 407    tnl_quad_func quad;
 408 } rast_tab[INTEL_MAX_TRIFUNC];
 409
 410
 411 #define DO_FALLBACK (IND & INTEL_FALLBACK_BIT)
 412 #define DO_OFFSET   (IND & INTEL_OFFSET_BIT)
 413 #define DO_UNFILLED (IND & INTEL_UNFILLED_BIT)
 414 #define DO_TWOSIDE  (IND & INTEL_TWOSIDE_BIT)
 415 #define DO_FLAT      0
 416 #define DO_TRI       1
 417 #define DO_QUAD      1
 418 #define DO_LINE      1
 419 #define DO_POINTS    1
 420 #define DO_FULL_QUAD 1
 421
 422 #define HAVE_RGBA         1
 423 #define HAVE_SPEC         1
 424 #define HAVE_BACK_COLORS  0
 425 #define HAVE_HW_FLATSHADE 1
 426 #define VERTEX            intelVertex
 427 #define TAB               rast_tab
 428
 429 /* Only used to pull back colors into vertices (ie, we know color is
 430  * floating point).
 431  */
 432 #define INTEL_COLOR( dst, src )                         \
 433 do {                                                    \
 434    UNCLAMPED_FLOAT_TO_UBYTE((dst)[0], (src)[2]);        \
 435    UNCLAMPED_FLOAT_TO_UBYTE((dst)[1], (src)[1]);        \
 436    UNCLAMPED_FLOAT_TO_UBYTE((dst)[2], (src)[0]);        \
 437    UNCLAMPED_FLOAT_TO_UBYTE((dst)[3], (src)[3]);        \
 438 } while (0)
 439
 440 #define INTEL_SPEC( dst, src )                          \
 441 do {                                                    \
 442    UNCLAMPED_FLOAT_TO_UBYTE((dst)[0], (src)[2]);        \
 443    UNCLAMPED_FLOAT_TO_UBYTE((dst)[1], (src)[1]);        \
 444    UNCLAMPED_FLOAT_TO_UBYTE((dst)[2], (src)[0]);        \
 445 } while (0)
 446
 447
 448 #define DEPTH_SCALE intel->polygon_offset_scale
 449 #define UNFILLED_TRI unfilled_tri
 450 #define UNFILLED_QUAD unfilled_quad
 451 #define VERT_X(_v) _v->v.x
 452 #define VERT_Y(_v) _v->v.y
 453 #define VERT_Z(_v) _v->v.z
 454 #define AREA_IS_CCW( a ) (a > 0)
 455 #define GET_VERTEX(e) (intel->verts + (e * intel->vertex_size * sizeof(GLuint)))
 456
 457 #define VERT_SET_RGBA( v, c )    if (coloroffset) INTEL_COLOR( v->ub4[coloroffset], c )
 458 #define VERT_COPY_RGBA( v0, v1 ) if (coloroffset) v0->ui[coloroffset] = v1->ui[coloroffset]
 459 #define VERT_SAVE_RGBA( idx )    if (coloroffset) color[idx] = v[idx]->ui[coloroffset]
 460 #define VERT_RESTORE_RGBA( idx ) if (coloroffset) v[idx]->ui[coloroffset] = color[idx]
 461
 462 #define VERT_SET_SPEC( v, c )    if (specoffset) INTEL_SPEC( v->ub4[specoffset], c )
 463 #define VERT_COPY_SPEC( v0, v1 ) if (specoffset) COPY_3V(v0->ub4[specoffset], v1->ub4[specoffset])
 464 #define VERT_SAVE_SPEC( idx )    if (specoffset) spec[idx] = v[idx]->ui[specoffset]
 465 #define VERT_RESTORE_SPEC( idx ) if (specoffset) v[idx]->ui[specoffset] = spec[idx]
 466
 467 #define LOCAL_VARS(n)                                                   \
 468    struct intel_context *intel = intel_context(ctx);                            \
 469    GLuint color[n], spec[n];                                            \
 470    GLuint coloroffset = intel->coloroffset;             \
 471    GLboolean specoffset = intel->specoffset;                    \
 472    (void) color; (void) spec; (void) coloroffset; (void) specoffset;
 473
 474
 475 /***********************************************************************
 476  *                Helpers for rendering unfilled primitives            *
 477  ***********************************************************************/
 478
 479 static const GLuint hw_prim[GL_POLYGON + 1] = {
 480    PRIM3D_POINTLIST,
 481    PRIM3D_LINELIST,
 482    PRIM3D_LINELIST,
 483    PRIM3D_LINELIST,
 484    PRIM3D_TRILIST,
 485    PRIM3D_TRILIST,
 486    PRIM3D_TRILIST,
 487    PRIM3D_TRILIST,
 488    PRIM3D_TRILIST,
 489    PRIM3D_TRILIST
 490 };
 491
 492 #define RASTERIZE(x) intelRasterPrimitive( ctx, x, hw_prim[x] )
 493 #define RENDER_PRIMITIVE intel->render_primitive
 494 #define TAG(x) x
 495 #define IND INTEL_FALLBACK_BIT
 496 #include "tnl_dd/t_dd_unfilled.h"
 497 #undef IND
 498
 499 /***********************************************************************
 500  *                      Generate GL render functions                   *
 501  ***********************************************************************/
 502
 503 #define IND (0)
 504 #define TAG(x) x
 505 #include "tnl_dd/t_dd_tritmp.h"
 506
 507 #define IND (INTEL_OFFSET_BIT)
 508 #define TAG(x) x##_offset
 509 #include "tnl_dd/t_dd_tritmp.h"
 510
 511 #define IND (INTEL_TWOSIDE_BIT)
 512 #define TAG(x) x##_twoside
 513 #include "tnl_dd/t_dd_tritmp.h"
 514
 515 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT)
 516 #define TAG(x) x##_twoside_offset
 517 #include "tnl_dd/t_dd_tritmp.h"
 518
 519 #define IND (INTEL_UNFILLED_BIT)
 520 #define TAG(x) x##_unfilled
 521 #include "tnl_dd/t_dd_tritmp.h"
 522
 523 #define IND (INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT)
 524 #define TAG(x) x##_offset_unfilled
 525 #include "tnl_dd/t_dd_tritmp.h"
 526
 527 #define IND (INTEL_TWOSIDE_BIT|INTEL_UNFILLED_BIT)
 528 #define TAG(x) x##_twoside_unfilled
 529 #include "tnl_dd/t_dd_tritmp.h"
 530
 531 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT)
 532 #define TAG(x) x##_twoside_offset_unfilled
 533 #include "tnl_dd/t_dd_tritmp.h"
 534
 535 #define IND (INTEL_FALLBACK_BIT)
 536 #define TAG(x) x##_fallback
 537 #include "tnl_dd/t_dd_tritmp.h"
 538
 539 #define IND (INTEL_OFFSET_BIT|INTEL_FALLBACK_BIT)
 540 #define TAG(x) x##_offset_fallback
 541 #include "tnl_dd/t_dd_tritmp.h"
 542
 543 #define IND (INTEL_TWOSIDE_BIT|INTEL_FALLBACK_BIT)
 544 #define TAG(x) x##_twoside_fallback
 545 #include "tnl_dd/t_dd_tritmp.h"
 546
 547 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT|INTEL_FALLBACK_BIT)
 548 #define TAG(x) x##_twoside_offset_fallback
 549 #include "tnl_dd/t_dd_tritmp.h"
 550
 551 #define IND (INTEL_UNFILLED_BIT|INTEL_FALLBACK_BIT)
 552 #define TAG(x) x##_unfilled_fallback
 553 #include "tnl_dd/t_dd_tritmp.h"
 554
 555 #define IND (INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT|INTEL_FALLBACK_BIT)
 556 #define TAG(x) x##_offset_unfilled_fallback
 557 #include "tnl_dd/t_dd_tritmp.h"
 558
 559 #define IND (INTEL_TWOSIDE_BIT|INTEL_UNFILLED_BIT|INTEL_FALLBACK_BIT)
 560 #define TAG(x) x##_twoside_unfilled_fallback
 561 #include "tnl_dd/t_dd_tritmp.h"
 562
 563 #define IND (INTEL_TWOSIDE_BIT|INTEL_OFFSET_BIT|INTEL_UNFILLED_BIT| \
 564              INTEL_FALLBACK_BIT)
 565 #define TAG(x) x##_twoside_offset_unfilled_fallback
 566 #include "tnl_dd/t_dd_tritmp.h"
 567
 568
 569 static void
 570 init_rast_tab(void)
 571 {
 572    init();
 573    init_offset();
 574    init_twoside();
 575    init_twoside_offset();
 576    init_unfilled();
 577    init_offset_unfilled();
 578    init_twoside_unfilled();
 579    init_twoside_offset_unfilled();
 580    init_fallback();
 581    init_offset_fallback();
 582    init_twoside_fallback();
 583    init_twoside_offset_fallback();
 584    init_unfilled_fallback();
 585    init_offset_unfilled_fallback();
 586    init_twoside_unfilled_fallback();
 587    init_twoside_offset_unfilled_fallback();
 588 }
 589
 590
 591 /***********************************************************************
 592  *                    Rasterization fallback helpers                   *
 593  ***********************************************************************/
 594
 595
 596 /* This code is hit only when a mix of accelerated and unaccelerated
 597  * primitives are being drawn, and only for the unaccelerated
 598  * primitives.
 599  */
 600 static void
 601 intel_fallback_tri(struct intel_context *intel,
 602                    intelVertex * v0, intelVertex * v1, intelVertex * v2)
 603 {
 604    GLcontext *ctx = &intel->ctx;
 605    SWvertex v[3];
 606
 607    if (0)
 608       fprintf(stderr, "\n%s\n", __FUNCTION__);
 609
 610    INTEL_FIREVERTICES(intel);
 611
 612    _swsetup_Translate(ctx, v0, &v[0]);
 613    _swsetup_Translate(ctx, v1, &v[1]);
 614    _swsetup_Translate(ctx, v2, &v[2]);
 615    intelSpanRenderStart(ctx);
 616    _swrast_Triangle(ctx, &v[0], &v[1], &v[2]);
 617    intelSpanRenderFinish(ctx);
 618 }
 619
 620
 621 static void
 622 intel_fallback_line(struct intel_context *intel,
 623                     intelVertex * v0, intelVertex * v1)
 624 {
 625    GLcontext *ctx = &intel->ctx;
 626    SWvertex v[2];
 627
 628    if (0)
 629       fprintf(stderr, "\n%s\n", __FUNCTION__);
 630
 631    INTEL_FIREVERTICES(intel);
 632
 633    _swsetup_Translate(ctx, v0, &v[0]);
 634    _swsetup_Translate(ctx, v1, &v[1]);
 635    intelSpanRenderStart(ctx);
 636    _swrast_Line(ctx, &v[0], &v[1]);
 637    intelSpanRenderFinish(ctx);
 638 }
 639
 640 static void
 641 intel_fallback_point(struct intel_context *intel,
 642                      intelVertex * v0)
 643 {
 644    GLcontext *ctx = &intel->ctx;
 645    SWvertex v[1];
 646
 647    if (0)
 648       fprintf(stderr, "\n%s\n", __FUNCTION__);
 649
 650    INTEL_FIREVERTICES(intel);
 651
 652    _swsetup_Translate(ctx, v0, &v[0]);
 653    intelSpanRenderStart(ctx);
 654    _swrast_Point(ctx, &v[0]);
 655    intelSpanRenderFinish(ctx);
 656 }
 657
 658
 659 /**********************************************************************/
 660 /*               Render unclipped begin/end objects                   */
 661 /**********************************************************************/
 662
 663 #define IND 0
 664 #define V(x) (intelVertex *)(vertptr + ((x)*vertsize*sizeof(GLuint)))
 665 #define RENDER_POINTS( start, count )   \
 666    for ( ; start < count ; start++) POINT( V(ELT(start)) );
 667 #define RENDER_LINE( v0, v1 )         LINE( V(v0), V(v1) )
 668 #define RENDER_TRI(  v0, v1, v2 )     TRI(  V(v0), V(v1), V(v2) )
 669 #define RENDER_QUAD( v0, v1, v2, v3 ) QUAD( V(v0), V(v1), V(v2), V(v3) )
 670 #define INIT(x) intelRenderPrimitive( ctx, x )
 671 #undef LOCAL_VARS
 672 #define LOCAL_VARS                                              \
 673     struct intel_context *intel = intel_context(ctx);                   \
 674     GLubyte *vertptr = (GLubyte *)intel->verts;                 \
 675     const GLuint vertsize = intel->vertex_size;         \
 676     const GLuint * const elt = TNL_CONTEXT(ctx)->vb.Elts;       \
 677     (void) elt;
 678 #define RESET_STIPPLE
 679 #define RESET_OCCLUSION
 680 #define PRESERVE_VB_DEFS
 681 #define ELT(x) x
 682 #define TAG(x) intel_##x##_verts
 683 #include "tnl/t_vb_rendertmp.h"
 684 #undef ELT
 685 #undef TAG
 686 #define TAG(x) intel_##x##_elts
 687 #define ELT(x) elt[x]
 688 #include "tnl/t_vb_rendertmp.h"
 689
 690 /**********************************************************************/
 691 /*                   Render clipped primitives                        */
 692 /**********************************************************************/
 693
 694
 695
 696 static void
 697 intelRenderClippedPoly(GLcontext * ctx, const GLuint * elts, GLuint n)
 698 {
 699    struct intel_context *intel = intel_context(ctx);
 700    TNLcontext *tnl = TNL_CONTEXT(ctx);
 701    struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
 702    GLuint prim = intel->render_primitive;
 703
 704    /* Render the new vertices as an unclipped polygon.
 705     */
 706    {
 707       GLuint *tmp = VB->Elts;
 708       VB->Elts = (GLuint *) elts;
 709       tnl->Driver.Render.PrimTabElts[GL_POLYGON] (ctx, 0, n,
 710                                                   PRIM_BEGIN | PRIM_END);
 711       VB->Elts = tmp;
 712    }
 713
 714    /* Restore the render primitive
 715     */
 716    if (prim != GL_POLYGON)
 717       tnl->Driver.Render.PrimitiveNotify(ctx, prim);
 718 }
 719
 720 static void
 721 intelRenderClippedLine(GLcontext * ctx, GLuint ii, GLuint jj)
 722 {
 723    TNLcontext *tnl = TNL_CONTEXT(ctx);
 724
 725    tnl->Driver.Render.Line(ctx, ii, jj);
 726 }
 727
 728 static void
 729 intelFastRenderClippedPoly(GLcontext * ctx, const GLuint * elts, GLuint n)
 730 {
 731    struct intel_context *intel = intel_context(ctx);
 732    const GLuint vertsize = intel->vertex_size;
 733    GLuint *vb = intelExtendInlinePrimitive(intel, (n - 2) * 3 * vertsize);
 734    GLubyte *vertptr = (GLubyte *) intel->verts;
 735    const GLuint *start = (const GLuint *) V(elts[0]);
 736    int i, j;
 737
 738    for (i = 2; i < n; i++) {
 739       COPY_DWORDS(j, vb, vertsize, V(elts[i - 1]));
 740       COPY_DWORDS(j, vb, vertsize, V(elts[i]));
 741       COPY_DWORDS(j, vb, vertsize, start);
 742    }
 743 }
 744
 745 /**********************************************************************/
 746 /*                    Choose render functions                         */
 747 /**********************************************************************/
 748
 749
 750
 751
 752 #define ANY_FALLBACK_FLAGS (DD_LINE_STIPPLE | DD_TRI_STIPPLE | DD_POINT_ATTEN | DD_POINT_SMOOTH | DD_TRI_SMOOTH)
 753 #define ANY_RASTER_FLAGS (DD_TRI_LIGHT_TWOSIDE | DD_TRI_OFFSET | DD_TRI_UNFILLED)
 754
 755 void
 756 intelChooseRenderState(GLcontext * ctx)
 757 {
 758    TNLcontext *tnl = TNL_CONTEXT(ctx);
 759    struct intel_context *intel = intel_context(ctx);
 760    GLuint flags = ctx->_TriangleCaps;
 761    const struct gl_fragment_program *fprog = ctx->FragmentProgram._Current;
 762    GLboolean have_wpos = (fprog && (fprog->Base.InputsRead & FRAG_BIT_WPOS));
 763    GLuint index = 0;
 764
 765    if (INTEL_DEBUG & DEBUG_STATE)
 766       fprintf(stderr, "\n%s\n", __FUNCTION__);
 767
 768    if ((flags & (ANY_FALLBACK_FLAGS | ANY_RASTER_FLAGS)) || have_wpos) {
 769
 770       if (flags & ANY_RASTER_FLAGS) {
 771          if (flags & DD_TRI_LIGHT_TWOSIDE)
 772             index |= INTEL_TWOSIDE_BIT;
 773          if (flags & DD_TRI_OFFSET)
 774             index |= INTEL_OFFSET_BIT;
 775          if (flags & DD_TRI_UNFILLED)
 776             index |= INTEL_UNFILLED_BIT;
 777       }
 778
 779       if (have_wpos) {
 780          intel->draw_point = intel_wpos_point;
 781          intel->draw_line = intel_wpos_line;
 782          intel->draw_tri = intel_wpos_triangle;
 783
 784          /* Make sure these get called:
 785           */
 786          index |= INTEL_FALLBACK_BIT;
 787       }
 788       else {
 789          intel->draw_point = intel_draw_point;
 790          intel->draw_line = intel_draw_line;
 791          intel->draw_tri = intel_draw_triangle;
 792       }
 793
 794       /* Hook in fallbacks for specific primitives.
 795        */
 796       if (flags & ANY_FALLBACK_FLAGS) {
 797          if (flags & DD_LINE_STIPPLE)
 798             intel->draw_line = intel_fallback_line;
 799
 800          if ((flags & DD_TRI_STIPPLE) && !intel->hw_stipple)
 801             intel->draw_tri = intel_fallback_tri;
 802
 803          if (flags & DD_TRI_SMOOTH) {
 804             if (intel->strict_conformance)
 805                intel->draw_tri = intel_fallback_tri;
 806          }
 807
 808          if (flags & DD_POINT_ATTEN) {
 809             if (0)
 810                intel->draw_point = intel_atten_point;
 811             else
 812                intel->draw_point = intel_fallback_point;
 813          }
 814
 815          if (flags & DD_POINT_SMOOTH) {
 816             if (intel->strict_conformance)
 817                intel->draw_point = intel_fallback_point;
 818          }
 819
 820          index |= INTEL_FALLBACK_BIT;
 821       }
 822    }
 823
 824    if (intel->RenderIndex != index) {
 825       intel->RenderIndex = index;
 826
 827       tnl->Driver.Render.Points = rast_tab[index].points;
 828       tnl->Driver.Render.Line = rast_tab[index].line;
 829       tnl->Driver.Render.Triangle = rast_tab[index].triangle;
 830       tnl->Driver.Render.Quad = rast_tab[index].quad;
 831
 832       if (index == 0) {
 833          tnl->Driver.Render.PrimTabVerts = intel_render_tab_verts;
 834          tnl->Driver.Render.PrimTabElts = intel_render_tab_elts;
 835          tnl->Driver.Render.ClippedLine = line; /* from tritmp.h */
 836          tnl->Driver.Render.ClippedPolygon = intelFastRenderClippedPoly;
 837       }
 838       else {
 839          tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
 840          tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
 841          tnl->Driver.Render.ClippedLine = intelRenderClippedLine;
 842          tnl->Driver.Render.ClippedPolygon = intelRenderClippedPoly;
 843       }
 844    }
 845 }
 846
 847 static const GLenum reduced_prim[GL_POLYGON + 1] = {
 848    GL_POINTS,
 849    GL_LINES,
 850    GL_LINES,
 851    GL_LINES,
 852    GL_TRIANGLES,
 853    GL_TRIANGLES,
 854    GL_TRIANGLES,
 855    GL_TRIANGLES,
 856    GL_TRIANGLES,
 857    GL_TRIANGLES
 858 };
 859
 860
 861 /**********************************************************************/
 862 /*                 High level hooks for t_vb_render.c                 */
 863 /**********************************************************************/
 864
 865
 866
 867
 868 static void
 869 intelRunPipeline(GLcontext * ctx)
 870 {
 871    struct intel_context *intel = intel_context(ctx);
 872
 873    _mesa_lock_context_textures(ctx);
 874
 875    if (ctx->NewState)
 876       _mesa_update_state_locked(ctx);
 877
 878    if (intel->NewGLState) {
 879       if (intel->NewGLState & _NEW_TEXTURE) {
 880          intel->vtbl.update_texture_state(intel);
 881       }
 882
 883       if (!intel->Fallback) {
 884          if (intel->NewGLState & _INTEL_NEW_RENDERSTATE)
 885             intelChooseRenderState(ctx);
 886       }
 887
 888       intel->NewGLState = 0;
 889    }
 890
 891    _tnl_run_pipeline(ctx);
 892
 893    _mesa_unlock_context_textures(ctx);
 894 }
 895
 896 static void
 897 intelRenderStart(GLcontext * ctx)
 898 {
 899    struct intel_context *intel = intel_context(ctx);
 900
 901    intel->vtbl.render_start(intel_context(ctx));
 902    intel->vtbl.emit_state(intel);
 903 }
 904
 905 static void
 906 intelRenderFinish(GLcontext * ctx)
 907 {
 908    struct intel_context *intel = intel_context(ctx);
 909
 910    if (intel->RenderIndex & INTEL_FALLBACK_BIT)
 911       _swrast_flush(ctx);
 912
 913    INTEL_FIREVERTICES(intel);
 914 }
 915
 916
 917
 918
 919  /* System to flush dma and emit state changes based on the rasterized
 920   * primitive.
 921   */
 922 static void
 923 intelRasterPrimitive(GLcontext * ctx, GLenum rprim, GLuint hwprim)
 924 {
 925    struct intel_context *intel = intel_context(ctx);
 926
 927    if (0)
 928       fprintf(stderr, "%s %s %x\n", __FUNCTION__,
 929               _mesa_lookup_enum_by_nr(rprim), hwprim);
 930
 931    intel->vtbl.reduced_primitive_state(intel, rprim);
 932
 933    /* Start a new primitive.  Arrange to have it flushed later on.
 934     */
 935    if (hwprim != intel->prim.primitive) {
 936       INTEL_FIREVERTICES(intel);
 937
 938       intelStartInlinePrimitive(intel, hwprim, LOOP_CLIPRECTS);
 939    }
 940 }
 941
 942
 943  /*
 944   */
 945 static void
 946 intelRenderPrimitive(GLcontext * ctx, GLenum prim)
 947 {
 948    struct intel_context *intel = intel_context(ctx);
 949
 950    if (0)
 951       fprintf(stderr, "%s %s\n", __FUNCTION__, _mesa_lookup_enum_by_nr(prim));
 952
 953    /* Let some clipping routines know which primitive they're dealing
 954     * with.
 955     */
 956    intel->render_primitive = prim;
 957
 958    /* Shortcircuit this when called from t_dd_rendertmp.h for unfilled
 959     * triangles.  The rasterized primitive will always be reset by
 960     * lower level functions in that case, potentially pingponging the
 961     * state:
 962     */
 963    if (reduced_prim[prim] == GL_TRIANGLES &&
 964        (ctx->_TriangleCaps & DD_TRI_UNFILLED))
 965       return;
 966
 967    /* Set some primitive-dependent state and Start? a new primitive.
 968     */
 969    intelRasterPrimitive(ctx, reduced_prim[prim], hw_prim[prim]);
 970 }
 971
 972
 973  /**********************************************************************/
 974  /*           Transition to/from hardware rasterization.               */
 975  /**********************************************************************/
 976
 977 static char *fallbackStrings[] = {
 978    [0] = "Draw buffer",
 979    [1] = "Read buffer",
 980    [2] = "Depth buffer",
 981    [3] = "Stencil buffer",
 982    [4] = "User disable",
 983    [5] = "Render mode",
 984
 985    [12] = "Texture",
 986    [13] = "Color mask",
 987    [14] = "Stencil",
 988    [15] = "Stipple",
 989    [16] = "Program",
 990    [17] = "Logic op",
 991    [18] = "Smooth polygon",
 992    [19] = "Smooth point",
 993 };
 994
 995
 996 static char *
 997 getFallbackString(GLuint bit)
 998 {
 999    int i = 0;
1000    while (bit > 1) {
1001       i++;
1002       bit >>= 1;
1003    }
1004    return fallbackStrings[i];
1005 }
1006
1007
1008
1009 void
1010 intelFallback(struct intel_context *intel, GLuint bit, GLboolean mode)
1011 {
1012    GLcontext *ctx = &intel->ctx;
1013    TNLcontext *tnl = TNL_CONTEXT(ctx);
1014    GLuint oldfallback = intel->Fallback;
1015
1016    if (mode) {
1017       intel->Fallback |= bit;
1018       if (oldfallback == 0) {
1019          intelFlush(ctx);
1020          if (INTEL_DEBUG & DEBUG_FALLBACKS)
1021             fprintf(stderr, "ENTER FALLBACK %x: %s\n",
1022                     bit, getFallbackString(bit));
1023          _swsetup_Wakeup(ctx);
1024          intel->RenderIndex = ~0;
1025       }
1026    }
1027    else {
1028       intel->Fallback &= ~bit;
1029       if (oldfallback == bit) {
1030          _swrast_flush(ctx);
1031          if (INTEL_DEBUG & DEBUG_FALLBACKS)
1032             fprintf(stderr, "LEAVE FALLBACK %s\n", getFallbackString(bit));
1033          tnl->Driver.Render.Start = intelRenderStart;
1034          tnl->Driver.Render.PrimitiveNotify = intelRenderPrimitive;
1035          tnl->Driver.Render.Finish = intelRenderFinish;
1036          tnl->Driver.Render.BuildVertices = _tnl_build_vertices;
1037          tnl->Driver.Render.CopyPV = _tnl_copy_pv;
1038          tnl->Driver.Render.Interp = _tnl_interp;
1039
1040          _tnl_invalidate_vertex_state(ctx, ~0);
1041          _tnl_invalidate_vertices(ctx, ~0);
1042          _tnl_install_attrs(ctx,
1043                             intel->vertex_attrs,
1044                             intel->vertex_attr_count,
1045                             intel->ViewportMatrix.m, 0);
1046
1047          intel->NewGLState |= _INTEL_NEW_RENDERSTATE;
1048       }
1049    }
1050 }
1051
1052 union fi
1053 {
1054    GLfloat f;
1055    GLint i;
1056 };
1057
1058
1059 /**********************************************************************/
1060 /*             Used only with the metaops callbacks.                  */
1061 /**********************************************************************/
1062 static void
1063 intel_meta_draw_poly(struct intel_context *intel,
1064                      GLuint n,
1065                      GLfloat xy[][2],
1066                      GLfloat z, GLuint color, GLfloat tex[][2])
1067 {
1068    union fi *vb;
1069    GLint i;
1070    GLboolean was_locked = intel->locked;
1071
1072    if (!was_locked)
1073        LOCK_HARDWARE(intel);
1074
1075    /* All 3d primitives should be emitted with LOOP_CLIPRECTS,
1076     * otherwise the drawing origin (DR4) might not be set correctly.
1077     */
1078    intelStartInlinePrimitive(intel, PRIM3D_TRIFAN, LOOP_CLIPRECTS);
1079    vb = (union fi *) intelExtendInlinePrimitive(intel, n * 6);
1080
1081    for (i = 0; i < n; i++) {
1082       vb[0].f = xy[i][0];
1083       vb[1].f = xy[i][1];
1084       vb[2].f = z;
1085       vb[3].i = color;
1086       vb[4].f = tex[i][0];
1087       vb[5].f = tex[i][1];
1088       vb += 6;
1089    }
1090
1091    INTEL_FIREVERTICES(intel);
1092
1093    if (!was_locked)
1094        UNLOCK_HARDWARE(intel);
1095 }
1096
1097 static void
1098 intel_meta_draw_quad(struct intel_context *intel,
1099                      GLfloat x0, GLfloat x1,
1100                      GLfloat y0, GLfloat y1,
1101                      GLfloat z,
1102                      GLuint color,
1103                      GLfloat s0, GLfloat s1, GLfloat t0, GLfloat t1)
1104 {
1105    GLfloat xy[4][2];
1106    GLfloat tex[4][2];
1107
1108    xy[0][0] = x0;
1109    xy[0][1] = y0;
1110    xy[1][0] = x1;
1111    xy[1][1] = y0;
1112    xy[2][0] = x1;
1113    xy[2][1] = y1;
1114    xy[3][0] = x0;
1115    xy[3][1] = y1;
1116
1117    tex[0][0] = s0;
1118    tex[0][1] = t0;
1119    tex[1][0] = s1;
1120    tex[1][1] = t0;
1121    tex[2][0] = s1;
1122    tex[2][1] = t1;
1123    tex[3][0] = s0;
1124    tex[3][1] = t1;
1125
1126    intel_meta_draw_poly(intel, 4, xy, z, color, tex);
1127 }
1128
1129
1130
1131 /**********************************************************************/
1132 /*                            Initialization.                         */
1133 /**********************************************************************/
1134
1135
1136 void
1137 intelInitTriFuncs(GLcontext * ctx)
1138 {
1139    struct intel_context *intel = intel_context(ctx);
1140    TNLcontext *tnl = TNL_CONTEXT(ctx);
1141    static int firsttime = 1;
1142
1143    if (firsttime) {
1144       init_rast_tab();
1145       firsttime = 0;
1146    }
1147
1148    tnl->Driver.RunPipeline = intelRunPipeline;
1149    tnl->Driver.Render.Start = intelRenderStart;
1150    tnl->Driver.Render.Finish = intelRenderFinish;
1151    tnl->Driver.Render.PrimitiveNotify = intelRenderPrimitive;
1152    tnl->Driver.Render.ResetLineStipple = _swrast_ResetLineStipple;
1153    tnl->Driver.Render.BuildVertices = _tnl_build_vertices;
1154    tnl->Driver.Render.CopyPV = _tnl_copy_pv;
1155    tnl->Driver.Render.Interp = _tnl_interp;
1156
1157    intel->vtbl.meta_draw_quad = intel_meta_draw_quad;
1158 }