src/mesa/drivers/dri/i830/i830_vb.c

   1 /*
   2  * GLX Hardware Device Driver for Intel i810
   3  * Copyright (C) 1999 Keith Whitwell
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included
  13  * in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * KEITH WHITWELL, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
  21  * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * Adapted for use on the I830M:
  24  *   Jeff Hartmann <jhartmann@2d3d.com>
  25  */
  26 /* $XFree86: xc/lib/GL/mesa/src/drv/i830/i830_vb.c,v 1.5 2002/12/10 01:26:54 dawes Exp $ */
  27
  28 #include "glheader.h"
  29 #include "mtypes.h"
  30 #include "imports.h"
  31 #include "macros.h"
  32 #include "colormac.h"
  33
  34 #include "swrast_setup/swrast_setup.h"
  35 #include "tnl/t_context.h"
  36
  37 #include "i830_screen.h"
  38 #include "i830_dri.h"
  39
  40 #include "i830_context.h"
  41 #include "i830_vb.h"
  42 #include "i830_ioctl.h"
  43 #include "i830_tris.h"
  44 #include "i830_state.h"
  45
  46 #define I830_TEX1_BIT       0x1
  47 #define I830_TEX0_BIT       0x2
  48 #define I830_RGBA_BIT       0x4
  49 #define I830_SPEC_BIT       0x8
  50 #define I830_FOG_BIT        0x10
  51 #define I830_XYZW_BIT       0x20
  52 #define I830_PTEX_BIT       0x40
  53 #define I830_MAX_SETUP      0x80
  54
  55 static struct {
  56    void                (*emit)( GLcontext *, GLuint, GLuint, void *, GLuint );
  57    interp_func          interp;
  58    copy_pv_func         copy_pv;
  59    GLboolean           (*check_tex_sizes)( GLcontext *ctx );
  60    GLuint               vertex_size;
  61    GLuint               vertex_format;
  62 } setup_tab[I830_MAX_SETUP];
  63
  64 #define TINY_VERTEX_FORMAT      (STATE3D_VERTEX_FORMAT_CMD | \
  65                                  VRTX_TEX_COORD_COUNT(0) | \
  66                                  VRTX_HAS_DIFFUSE | \
  67                                  VRTX_HAS_XYZ)
  68
  69 #define NOTEX_VERTEX_FORMAT     (STATE3D_VERTEX_FORMAT_CMD | \
  70                                  VRTX_TEX_COORD_COUNT(0) | \
  71                                  VRTX_HAS_DIFFUSE | \
  72                                  VRTX_HAS_SPEC | \
  73                                  VRTX_HAS_XYZW)
  74
  75 #define TEX0_VERTEX_FORMAT      (STATE3D_VERTEX_FORMAT_CMD | \
  76                                  VRTX_TEX_COORD_COUNT(1) | \
  77                                  VRTX_HAS_DIFFUSE | \
  78                                  VRTX_HAS_SPEC | \
  79                                  VRTX_HAS_XYZW)
  80
  81 #define TEX1_VERTEX_FORMAT      (STATE3D_VERTEX_FORMAT_CMD | \
  82                                  VRTX_TEX_COORD_COUNT(2) | \
  83                                  VRTX_HAS_DIFFUSE | \
  84                                  VRTX_HAS_SPEC | \
  85                                  VRTX_HAS_XYZW)
  86
  87
  88 /* I'm cheating here hardcore : if bit 31 is set I know to emit
  89  * a vf2 state == TEXCOORDFMT_3D.  We never mix 2d/3d texcoords,
  90  * so this solution works for now.
  91  */
  92
  93 #define PROJ_TEX1_VERTEX_FORMAT ((1<<31) | \
  94                                  STATE3D_VERTEX_FORMAT_CMD | \
  95                                  VRTX_TEX_COORD_COUNT(2) | \
  96                                  VRTX_HAS_DIFFUSE | \
  97                                  VRTX_HAS_SPEC | \
  98                                  VRTX_HAS_XYZW)
  99
 100 /* Might want to do these later */
 101 #define TEX2_VERTEX_FORMAT      0
 102 #define TEX3_VERTEX_FORMAT      0
 103 #define PROJ_TEX3_VERTEX_FORMAT 0
 104
 105 #define DO_XYZW (IND & I830_XYZW_BIT)
 106 #define DO_RGBA (IND & I830_RGBA_BIT)
 107 #define DO_SPEC (IND & I830_SPEC_BIT)
 108 #define DO_FOG  (IND & I830_FOG_BIT)
 109 #define DO_TEX0 (IND & I830_TEX0_BIT)
 110 #define DO_TEX1 (IND & I830_TEX1_BIT)
 111 #define DO_TEX2 0
 112 #define DO_TEX3 0
 113 #define DO_PTEX (IND & I830_PTEX_BIT)
 114
 115 #define VERTEX i830Vertex
 116 #define VERTEX_COLOR i830_color_t
 117 #define GET_VIEWPORT_MAT() I830_CONTEXT(ctx)->ViewportMatrix.m
 118 #define GET_TEXSOURCE(n)  n
 119 #define GET_VERTEX_FORMAT() I830_CONTEXT(ctx)->vertex_format
 120 #define GET_VERTEX_STORE() ((GLubyte *)I830_CONTEXT(ctx)->verts)
 121 #define GET_VERTEX_SIZE() I830_CONTEXT(ctx)->vertex_size * sizeof(int)
 122 #define INVALIDATE_STORED_VERTICES()
 123
 124 #define HAVE_HW_VIEWPORT    0
 125 #define HAVE_HW_DIVIDE      0
 126 #define HAVE_RGBA_COLOR     0
 127 #define HAVE_TINY_VERTICES  1
 128 #define HAVE_NOTEX_VERTICES 1
 129 #define HAVE_TEX0_VERTICES  1
 130 #define HAVE_TEX1_VERTICES  1
 131 #define HAVE_TEX2_VERTICES  0
 132 #define HAVE_TEX3_VERTICES  0
 133 #define HAVE_PTEX_VERTICES  1
 134
 135 #define UNVIEWPORT_VARS  GLfloat h = I830_CONTEXT(ctx)->driDrawable->h
 136 #define UNVIEWPORT_X(x)  x - SUBPIXEL_X
 137 #define UNVIEWPORT_Y(y)  - y + h + SUBPIXEL_Y
 138 #define UNVIEWPORT_Z(z)  z * (float)I830_CONTEXT(ctx)->ClearDepth
 139
 140 #define PTEX_FALLBACK() FALLBACK(I830_CONTEXT(ctx), I830_FALLBACK_TEXTURE, 1)
 141
 142 #define INTERP_VERTEX setup_tab[I830_CONTEXT(ctx)->SetupIndex].interp
 143 #define COPY_PV_VERTEX setup_tab[I830_CONTEXT(ctx)->SetupIndex].copy_pv
 144
 145
 146 /***********************************************************************
 147  *         Generate  pv-copying and translation functions              *
 148  ***********************************************************************/
 149
 150 #define TAG(x) i830_##x
 151 #include "tnl_dd/t_dd_vb.c"
 152
 153 /***********************************************************************
 154  *             Generate vertex emit and interp functions               *
 155  ***********************************************************************/
 156
 157 #define IND (I830_XYZW_BIT|I830_RGBA_BIT)
 158 #define TAG(x) x##_wg
 159 #include "tnl_dd/t_dd_vbtmp.h"
 160
 161 #define IND (I830_XYZW_BIT|I830_RGBA_BIT|I830_SPEC_BIT)
 162 #define TAG(x) x##_wgs
 163 #include "tnl_dd/t_dd_vbtmp.h"
 164
 165 #define IND (I830_XYZW_BIT|I830_RGBA_BIT|I830_TEX0_BIT)
 166 #define TAG(x) x##_wgt0
 167 #include "tnl_dd/t_dd_vbtmp.h"
 168
 169 #define IND (I830_XYZW_BIT|I830_RGBA_BIT|I830_TEX0_BIT|I830_TEX1_BIT)
 170 #define TAG(x) x##_wgt0t1
 171 #include "tnl_dd/t_dd_vbtmp.h"
 172
 173 #define IND (I830_XYZW_BIT|I830_RGBA_BIT|I830_TEX0_BIT|I830_PTEX_BIT)
 174 #define TAG(x) x##_wgpt0
 175 #include "tnl_dd/t_dd_vbtmp.h"
 176
 177 #define IND (I830_XYZW_BIT|I830_RGBA_BIT|I830_SPEC_BIT|I830_TEX0_BIT)
 178 #define TAG(x) x##_wgst0
 179 #include "tnl_dd/t_dd_vbtmp.h"
 180
 181 #define IND (I830_XYZW_BIT|I830_RGBA_BIT|I830_SPEC_BIT|I830_TEX0_BIT|\
 182              I830_TEX1_BIT)
 183 #define TAG(x) x##_wgst0t1
 184 #include "tnl_dd/t_dd_vbtmp.h"
 185
 186 #define IND (I830_XYZW_BIT|I830_RGBA_BIT|I830_SPEC_BIT|I830_TEX0_BIT|\
 187              I830_PTEX_BIT)
 188 #define TAG(x) x##_wgspt0
 189 #include "tnl_dd/t_dd_vbtmp.h"
 190
 191 #define IND (I830_XYZW_BIT|I830_RGBA_BIT|I830_FOG_BIT)
 192 #define TAG(x) x##_wgf
 193 #include "tnl_dd/t_dd_vbtmp.h"
 194
 195 #define IND (I830_XYZW_BIT|I830_RGBA_BIT|I830_FOG_BIT|I830_SPEC_BIT)
 196 #define TAG(x) x##_wgfs
 197 #include "tnl_dd/t_dd_vbtmp.h"
 198
 199 #define IND (I830_XYZW_BIT|I830_RGBA_BIT|I830_FOG_BIT|I830_TEX0_BIT)
 200 #define TAG(x) x##_wgft0
 201 #include "tnl_dd/t_dd_vbtmp.h"
 202
 203 #define IND (I830_XYZW_BIT|I830_RGBA_BIT|I830_FOG_BIT|I830_TEX0_BIT|\
 204              I830_TEX1_BIT)
 205 #define TAG(x) x##_wgft0t1
 206 #include "tnl_dd/t_dd_vbtmp.h"
 207
 208 #define IND (I830_XYZW_BIT|I830_RGBA_BIT|I830_FOG_BIT|I830_TEX0_BIT|\
 209              I830_PTEX_BIT)
 210 #define TAG(x) x##_wgfpt0
 211 #include "tnl_dd/t_dd_vbtmp.h"
 212
 213 #define IND (I830_XYZW_BIT|I830_RGBA_BIT|I830_FOG_BIT|I830_SPEC_BIT|\
 214              I830_TEX0_BIT)
 215 #define TAG(x) x##_wgfst0
 216 #include "tnl_dd/t_dd_vbtmp.h"
 217
 218 #define IND (I830_XYZW_BIT|I830_RGBA_BIT|I830_FOG_BIT|I830_SPEC_BIT|\
 219              I830_TEX0_BIT|I830_TEX1_BIT)
 220 #define TAG(x) x##_wgfst0t1
 221 #include "tnl_dd/t_dd_vbtmp.h"
 222
 223 #define IND (I830_XYZW_BIT|I830_RGBA_BIT|I830_FOG_BIT|I830_SPEC_BIT|\
 224              I830_TEX0_BIT|I830_PTEX_BIT)
 225 #define TAG(x) x##_wgfspt0
 226 #include "tnl_dd/t_dd_vbtmp.h"
 227
 228 #define IND (I830_TEX0_BIT)
 229 #define TAG(x) x##_t0
 230 #include "tnl_dd/t_dd_vbtmp.h"
 231
 232 #define IND (I830_TEX0_BIT|I830_TEX1_BIT)
 233 #define TAG(x) x##_t0t1
 234 #include "tnl_dd/t_dd_vbtmp.h"
 235
 236 #define IND (I830_FOG_BIT)
 237 #define TAG(x) x##_f
 238 #include "tnl_dd/t_dd_vbtmp.h"
 239
 240 #define IND (I830_FOG_BIT|I830_TEX0_BIT)
 241 #define TAG(x) x##_ft0
 242 #include "tnl_dd/t_dd_vbtmp.h"
 243
 244 #define IND (I830_FOG_BIT|I830_TEX0_BIT|I830_TEX1_BIT)
 245 #define TAG(x) x##_ft0t1
 246 #include "tnl_dd/t_dd_vbtmp.h"
 247
 248 #define IND (I830_RGBA_BIT)
 249 #define TAG(x) x##_g
 250 #include "tnl_dd/t_dd_vbtmp.h"
 251
 252 #define IND (I830_RGBA_BIT|I830_SPEC_BIT)
 253 #define TAG(x) x##_gs
 254 #include "tnl_dd/t_dd_vbtmp.h"
 255
 256 #define IND (I830_RGBA_BIT|I830_TEX0_BIT)
 257 #define TAG(x) x##_gt0
 258 #include "tnl_dd/t_dd_vbtmp.h"
 259
 260 #define IND (I830_RGBA_BIT|I830_TEX0_BIT|I830_TEX1_BIT)
 261 #define TAG(x) x##_gt0t1
 262 #include "tnl_dd/t_dd_vbtmp.h"
 263
 264 #define IND (I830_RGBA_BIT|I830_SPEC_BIT|I830_TEX0_BIT)
 265 #define TAG(x) x##_gst0
 266 #include "tnl_dd/t_dd_vbtmp.h"
 267
 268 #define IND (I830_RGBA_BIT|I830_SPEC_BIT|I830_TEX0_BIT|I830_TEX1_BIT)
 269 #define TAG(x) x##_gst0t1
 270 #include "tnl_dd/t_dd_vbtmp.h"
 271
 272 #define IND (I830_RGBA_BIT|I830_FOG_BIT)
 273 #define TAG(x) x##_gf
 274 #include "tnl_dd/t_dd_vbtmp.h"
 275
 276 #define IND (I830_RGBA_BIT|I830_FOG_BIT|I830_SPEC_BIT)
 277 #define TAG(x) x##_gfs
 278 #include "tnl_dd/t_dd_vbtmp.h"
 279
 280 #define IND (I830_RGBA_BIT|I830_FOG_BIT|I830_TEX0_BIT)
 281 #define TAG(x) x##_gft0
 282 #include "tnl_dd/t_dd_vbtmp.h"
 283
 284 #define IND (I830_RGBA_BIT|I830_FOG_BIT|I830_TEX0_BIT|I830_TEX1_BIT)
 285 #define TAG(x) x##_gft0t1
 286 #include "tnl_dd/t_dd_vbtmp.h"
 287
 288 #define IND (I830_RGBA_BIT|I830_FOG_BIT|I830_SPEC_BIT|I830_TEX0_BIT)
 289 #define TAG(x) x##_gfst0
 290 #include "tnl_dd/t_dd_vbtmp.h"
 291
 292 #define IND (I830_RGBA_BIT|I830_FOG_BIT|I830_SPEC_BIT|I830_TEX0_BIT|\
 293              I830_TEX1_BIT)
 294 #define TAG(x) x##_gfst0t1
 295 #include "tnl_dd/t_dd_vbtmp.h"
 296
 297 /* Add functions for proj texturing for t0 and t1 */
 298 #define IND (I830_XYZW_BIT|I830_RGBA_BIT|I830_TEX0_BIT|I830_TEX1_BIT|\
 299              I830_PTEX_BIT)
 300 #define TAG(x) x##_wgpt0t1
 301 #include "tnl_dd/t_dd_vbtmp.h"
 302
 303 #define IND (I830_XYZW_BIT|I830_RGBA_BIT|I830_SPEC_BIT|I830_TEX0_BIT|\
 304              I830_TEX1_BIT|I830_PTEX_BIT)
 305 #define TAG(x) x##_wgspt0t1
 306 #include "tnl_dd/t_dd_vbtmp.h"
 307
 308 #define IND (I830_XYZW_BIT|I830_RGBA_BIT|I830_FOG_BIT|I830_TEX0_BIT|\
 309              I830_TEX1_BIT|I830_PTEX_BIT)
 310 #define TAG(x) x##_wgfpt0t1
 311 #include "tnl_dd/t_dd_vbtmp.h"
 312
 313 #define IND (I830_XYZW_BIT|I830_RGBA_BIT|I830_FOG_BIT|I830_SPEC_BIT|\
 314              I830_TEX1_BIT|I830_TEX0_BIT|I830_PTEX_BIT)
 315 #define TAG(x) x##_wgfspt0t1
 316 #include "tnl_dd/t_dd_vbtmp.h"
 317
 318
 319 static void init_setup_tab( void )
 320 {
 321    init_wg();
 322    init_wgs();
 323    init_wgt0();
 324    init_wgt0t1();
 325    init_wgpt0();
 326    init_wgst0();
 327    init_wgst0t1();
 328    init_wgspt0();
 329    init_wgf();
 330    init_wgfs();
 331    init_wgft0();
 332    init_wgft0t1();
 333    init_wgfpt0();
 334    init_wgfst0();
 335    init_wgfst0t1();
 336    init_wgfspt0();
 337    init_t0();
 338    init_t0t1();
 339    init_f();
 340    init_ft0();
 341    init_ft0t1();
 342    init_g();
 343    init_gs();
 344    init_gt0();
 345    init_gt0t1();
 346    init_gst0();
 347    init_gst0t1();
 348    init_gf();
 349    init_gfs();
 350    init_gft0();
 351    init_gft0t1();
 352    init_gfst0();
 353    init_gfst0t1();
 354    /* Add proj texturing on t1 */
 355    init_wgpt0t1();
 356    init_wgspt0t1();
 357    init_wgfpt0t1();
 358    init_wgfspt0t1();
 359 }
 360
 361
 362
 363 void i830PrintSetupFlags(char *msg, GLuint flags )
 364 {
 365    fprintf(stderr, "%s(%x): %s%s%s%s%s%s%s\n",
 366            msg,
 367            (int)flags,
 368            (flags & I830_XYZW_BIT)      ? " xyzw," : "",
 369            (flags & I830_RGBA_BIT)     ? " rgba," : "",
 370            (flags & I830_SPEC_BIT)     ? " spec," : "",
 371            (flags & I830_FOG_BIT)      ? " fog," : "",
 372            (flags & I830_TEX0_BIT)     ? " tex-0," : "",
 373            (flags & I830_TEX1_BIT)     ? " tex-1," : "",
 374            (flags & I830_PTEX_BIT)     ? " ptex," : "");
 375 }
 376
 377 void i830CheckTexSizes( GLcontext *ctx )
 378 {
 379    TNLcontext *tnl = TNL_CONTEXT(ctx);
 380    i830ContextPtr imesa = I830_CONTEXT( ctx );
 381
 382    if (!setup_tab[imesa->SetupIndex].check_tex_sizes(ctx)) {
 383       int ind = imesa->SetupIndex |= I830_PTEX_BIT;
 384
 385       if(setup_tab[ind].vertex_format != imesa->vertex_format) {
 386          int vfmt = setup_tab[ind].vertex_format;
 387
 388          I830_STATECHANGE(imesa, I830_UPLOAD_CTX);
 389          imesa->Setup[I830_CTXREG_VF] = ~(1<<31) & vfmt;
 390
 391          if (vfmt & (1<<31)) {
 392             /* Proj texturing */
 393             imesa->Setup[I830_CTXREG_VF2] = (STATE3D_VERTEX_FORMAT_2_CMD |
 394                                           VRTX_TEX_SET_0_FMT(TEXCOORDFMT_3D) |
 395                                           VRTX_TEX_SET_1_FMT(TEXCOORDFMT_3D) |
 396                                           VRTX_TEX_SET_2_FMT(TEXCOORDFMT_3D) |
 397                                           VRTX_TEX_SET_3_FMT(TEXCOORDFMT_3D));
 398             i830UpdateTexUnitProj( ctx, 0, GL_TRUE );
 399             i830UpdateTexUnitProj( ctx, 1, GL_TRUE );
 400
 401          } else {
 402             /* Normal texturing */
 403             imesa->Setup[I830_CTXREG_VF2] = (STATE3D_VERTEX_FORMAT_2_CMD |
 404                                           VRTX_TEX_SET_0_FMT(TEXCOORDFMT_2D) |
 405                                           VRTX_TEX_SET_1_FMT(TEXCOORDFMT_2D) |
 406                                           VRTX_TEX_SET_2_FMT(TEXCOORDFMT_2D) |
 407                                           VRTX_TEX_SET_3_FMT(TEXCOORDFMT_2D));
 408             i830UpdateTexUnitProj( ctx, 0, GL_FALSE );
 409             i830UpdateTexUnitProj( ctx, 1, GL_FALSE );
 410          }
 411          imesa->vertex_format = vfmt;
 412          imesa->vertex_size = setup_tab[ind].vertex_size;
 413       }
 414
 415       if (!imesa->Fallback &&
 416           !(ctx->_TriangleCaps & (DD_TRI_LIGHT_TWOSIDE|DD_TRI_UNFILLED))) {
 417          tnl->Driver.Render.Interp = setup_tab[imesa->SetupIndex].interp;
 418          tnl->Driver.Render.CopyPV = setup_tab[imesa->SetupIndex].copy_pv;
 419       }
 420    }
 421 }
 422
 423 void i830BuildVertices( GLcontext *ctx,
 424                         GLuint start,
 425                         GLuint count,
 426                         GLuint newinputs )
 427 {
 428    i830ContextPtr imesa = I830_CONTEXT( ctx );
 429    GLuint stride = imesa->vertex_size * sizeof(int);
 430    GLubyte *v = ((GLubyte *) imesa->verts + (start * stride));
 431
 432    if (0) fprintf(stderr, "%s\n", __FUNCTION__);
 433
 434    newinputs |= imesa->SetupNewInputs;
 435    imesa->SetupNewInputs = 0;
 436
 437    if (!newinputs)
 438       return;
 439
 440    if (newinputs & VERT_BIT_POS) {
 441       setup_tab[imesa->SetupIndex].emit( ctx, start, count, v, stride );
 442    } else {
 443       GLuint ind = 0;
 444
 445       if (newinputs & VERT_BIT_COLOR0)
 446          ind |= I830_RGBA_BIT;
 447
 448       if (newinputs & VERT_BIT_COLOR1)
 449          ind |= I830_SPEC_BIT;
 450
 451       if (newinputs & VERT_BIT_TEX0)
 452          ind |= I830_TEX0_BIT;
 453
 454       if (newinputs & VERT_BIT_TEX1)
 455          ind |= I830_TEX1_BIT;
 456
 457       if (newinputs & VERT_BIT_FOG)
 458          ind |= I830_FOG_BIT;
 459
 460 #if 0
 461       if (imesa->SetupIndex & I830_PTEX_BIT)
 462          ind = ~0;
 463 #endif
 464
 465       ind &= imesa->SetupIndex;
 466
 467       if (ind) {
 468          setup_tab[ind].emit( ctx, start, count, v, stride );
 469       }
 470    }
 471 }
 472
 473 void i830ChooseVertexState( GLcontext *ctx )
 474 {
 475    TNLcontext *tnl = TNL_CONTEXT(ctx);
 476    i830ContextPtr imesa = I830_CONTEXT( ctx );
 477    GLuint ind = I830_XYZW_BIT|I830_RGBA_BIT;
 478
 479    if (ctx->_TriangleCaps & DD_SEPARATE_SPECULAR)
 480       ind |= I830_SPEC_BIT;
 481
 482    if (ctx->Fog.Enabled)
 483       ind |= I830_FOG_BIT;
 484
 485    if (ctx->Texture._EnabledUnits & 0x2)
 486       /* unit 1 enabled */
 487       ind |= I830_TEX1_BIT|I830_TEX0_BIT;
 488    else if (ctx->Texture._EnabledUnits & 0x1)
 489       /* unit 0 enabled */
 490       ind |= I830_TEX0_BIT;
 491
 492    imesa->SetupIndex = ind;
 493
 494    if (I830_DEBUG & (DEBUG_VERTS|DEBUG_STATE))
 495       i830PrintSetupFlags( __FUNCTION__, ind );
 496
 497    if (ctx->_TriangleCaps & (DD_TRI_LIGHT_TWOSIDE|DD_TRI_UNFILLED)) {
 498       tnl->Driver.Render.Interp = i830_interp_extras;
 499       tnl->Driver.Render.CopyPV = i830_copy_pv_extras;
 500    } else {
 501       tnl->Driver.Render.Interp = setup_tab[ind].interp;
 502       tnl->Driver.Render.CopyPV = setup_tab[ind].copy_pv;
 503    }
 504
 505    if (setup_tab[ind].vertex_format != imesa->vertex_format) {
 506       int vfmt = setup_tab[ind].vertex_format;
 507
 508       I830_STATECHANGE(imesa, I830_UPLOAD_CTX);
 509       imesa->Setup[I830_CTXREG_VF] = ~(1<<31) & vfmt;
 510
 511       if (vfmt & (1<<31)) {
 512          /* Proj texturing */
 513          imesa->Setup[I830_CTXREG_VF2] = (STATE3D_VERTEX_FORMAT_2_CMD |
 514                                           VRTX_TEX_SET_0_FMT(TEXCOORDFMT_3D) |
 515                                           VRTX_TEX_SET_1_FMT(TEXCOORDFMT_3D) |
 516                                           VRTX_TEX_SET_2_FMT(TEXCOORDFMT_3D) |
 517                                           VRTX_TEX_SET_3_FMT(TEXCOORDFMT_3D));
 518          i830UpdateTexUnitProj( ctx, 0, GL_TRUE );
 519          i830UpdateTexUnitProj( ctx, 1, GL_TRUE );
 520       } else {
 521          /* Normal texturing */
 522          imesa->Setup[I830_CTXREG_VF2] = (STATE3D_VERTEX_FORMAT_2_CMD |
 523                                           VRTX_TEX_SET_0_FMT(TEXCOORDFMT_2D) |
 524                                           VRTX_TEX_SET_1_FMT(TEXCOORDFMT_2D) |
 525                                           VRTX_TEX_SET_2_FMT(TEXCOORDFMT_2D) |
 526                                           VRTX_TEX_SET_3_FMT(TEXCOORDFMT_2D));
 527          i830UpdateTexUnitProj( ctx, 0, GL_FALSE );
 528          i830UpdateTexUnitProj( ctx, 1, GL_FALSE );
 529       }
 530       imesa->vertex_format = vfmt;
 531       imesa->vertex_size = setup_tab[ind].vertex_size;
 532    }
 533 }
 534
 535
 536
 537 void *i830_emit_contiguous_verts( GLcontext *ctx,
 538                                  GLuint start,
 539                                  GLuint count,
 540                                  void *dest)
 541 {
 542    i830ContextPtr imesa = I830_CONTEXT(ctx);
 543    GLuint stride = imesa->vertex_size * 4;
 544    setup_tab[imesa->SetupIndex].emit( ctx, start, count, dest, stride );
 545    return (void *)((char *)dest + stride * (count - start));
 546 }
 547
 548
 549
 550 void i830InitVB( GLcontext *ctx )
 551 {
 552    i830ContextPtr imesa = I830_CONTEXT(ctx);
 553    GLuint size = TNL_CONTEXT(ctx)->vb.Size;
 554
 555    imesa->verts = (char *)ALIGN_MALLOC(size * 4 * 16, 32);
 556
 557    {
 558       static int firsttime = 1;
 559       if (firsttime) {
 560          init_setup_tab();
 561          firsttime = 0;
 562       }
 563    }
 564 }
 565
 566
 567 void i830FreeVB( GLcontext *ctx )
 568 {
 569    i830ContextPtr imesa = I830_CONTEXT(ctx);
 570    if (imesa->verts) {
 571       ALIGN_FREE(imesa->verts);
 572       imesa->verts = 0;
 573    }
 574 }