src/mesa/drivers/dri/mach64/mach64_state.c

   1 /* -*- mode: c; c-basic-offset: 3 -*- */
   2 /*
   3  * Copyright 2000 Gareth Hughes
   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 "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * GARETH HUGHES BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  21  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 /*
  26  * Authors:
  27  *      Gareth Hughes <gareth@valinux.com>
  28  *      Leif Delgass <ldelgass@retinalburn.net>
  29  *      Jos�Fonseca <j_r_fonseca@yahoo.co.uk>
  30  */
  31
  32 #include "mach64_context.h"
  33 #include "mach64_state.h"
  34 #include "mach64_ioctl.h"
  35 #include "mach64_tris.h"
  36 #include "mach64_vb.h"
  37 #include "mach64_tex.h"
  38
  39 #include "main/enums.h"
  40 #include "main/colormac.h"
  41 #include "swrast/swrast.h"
  42 #include "vbo/vbo.h"
  43 #include "tnl/tnl.h"
  44 #include "swrast_setup/swrast_setup.h"
  45
  46
  47 /* =============================================================
  48  * Alpha blending
  49  */
  50
  51 static void mach64UpdateAlphaMode( GLcontext *ctx )
  52 {
  53    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
  54    GLuint a = mmesa->setup.alpha_tst_cntl;
  55    GLuint s = mmesa->setup.scale_3d_cntl;
  56    GLuint m = mmesa->setup.dp_write_mask;
  57
  58    if ( ctx->Color.AlphaEnabled ) {
  59       GLubyte ref;
  60
  61       CLAMPED_FLOAT_TO_UBYTE(ref, ctx->Color.AlphaRef);
  62
  63       a &= ~(MACH64_ALPHA_TEST_MASK | MACH64_REF_ALPHA_MASK);
  64
  65       switch ( ctx->Color.AlphaFunc ) {
  66       case GL_NEVER:
  67          a |= MACH64_ALPHA_TEST_NEVER;
  68          break;
  69       case GL_LESS:
  70          a |= MACH64_ALPHA_TEST_LESS;
  71          break;
  72       case GL_LEQUAL:
  73          a |= MACH64_ALPHA_TEST_LEQUAL;
  74          break;
  75       case GL_EQUAL:
  76          a |= MACH64_ALPHA_TEST_EQUAL;
  77          break;
  78       case GL_GEQUAL:
  79          a |= MACH64_ALPHA_TEST_GEQUAL;
  80          break;
  81       case GL_GREATER:
  82          a |= MACH64_ALPHA_TEST_GREATER;
  83          break;
  84       case GL_NOTEQUAL:
  85          a |= MACH64_ALPHA_TEST_NOTEQUAL;
  86          break;
  87       case GL_ALWAYS:
  88          a |= MACH64_ALPHA_TEST_ALWAYS;
  89          break;
  90       }
  91
  92       a |= (ref << MACH64_REF_ALPHA_SHIFT);
  93       a |=  MACH64_ALPHA_TEST_EN;
  94    } else {
  95       a &= ~MACH64_ALPHA_TEST_EN;
  96    }
  97
  98    FALLBACK( mmesa, MACH64_FALLBACK_BLEND_FUNC, GL_FALSE );
  99
 100    if ( ctx->Color.BlendEnabled ) {
 101       s &= ~(MACH64_ALPHA_BLEND_SRC_MASK |
 102              MACH64_ALPHA_BLEND_DST_MASK |
 103              MACH64_ALPHA_BLEND_SAT);
 104
 105       switch ( ctx->Color.BlendSrcRGB ) {
 106       case GL_ZERO:
 107          s |= MACH64_ALPHA_BLEND_SRC_ZERO;
 108          break;
 109       case GL_ONE:
 110          s |= MACH64_ALPHA_BLEND_SRC_ONE;
 111          break;
 112       case GL_DST_COLOR:
 113          s |= MACH64_ALPHA_BLEND_SRC_DSTCOLOR;
 114          break;
 115       case GL_ONE_MINUS_DST_COLOR:
 116          s |= MACH64_ALPHA_BLEND_SRC_INVDSTCOLOR;
 117          break;
 118       case GL_SRC_ALPHA:
 119          s |= MACH64_ALPHA_BLEND_SRC_SRCALPHA;
 120          break;
 121       case GL_ONE_MINUS_SRC_ALPHA:
 122          s |= MACH64_ALPHA_BLEND_SRC_INVSRCALPHA;
 123          break;
 124       case GL_DST_ALPHA:
 125          s |= MACH64_ALPHA_BLEND_SRC_DSTALPHA;
 126          break;
 127       case GL_ONE_MINUS_DST_ALPHA:
 128          s |= MACH64_ALPHA_BLEND_SRC_INVDSTALPHA;
 129          break;
 130       case GL_SRC_ALPHA_SATURATE:
 131          s |= (MACH64_ALPHA_BLEND_SRC_SRCALPHA |
 132                MACH64_ALPHA_BLEND_SAT);
 133          break;
 134       default:
 135          FALLBACK( mmesa, MACH64_FALLBACK_BLEND_FUNC, GL_TRUE );
 136       }
 137
 138       switch ( ctx->Color.BlendDstRGB ) {
 139       case GL_ZERO:
 140          s |= MACH64_ALPHA_BLEND_DST_ZERO;
 141          break;
 142       case GL_ONE:
 143          s |= MACH64_ALPHA_BLEND_DST_ONE;
 144          break;
 145       case GL_SRC_COLOR:
 146          s |= MACH64_ALPHA_BLEND_DST_SRCCOLOR;
 147          break;
 148       case GL_ONE_MINUS_SRC_COLOR:
 149          s |= MACH64_ALPHA_BLEND_DST_INVSRCCOLOR;
 150          break;
 151       case GL_SRC_ALPHA:
 152          s |= MACH64_ALPHA_BLEND_DST_SRCALPHA;
 153          break;
 154       case GL_ONE_MINUS_SRC_ALPHA:
 155          s |= MACH64_ALPHA_BLEND_DST_INVSRCALPHA;
 156          break;
 157       case GL_DST_ALPHA:
 158          s |= MACH64_ALPHA_BLEND_DST_DSTALPHA;
 159          break;
 160       case GL_ONE_MINUS_DST_ALPHA:
 161          s |= MACH64_ALPHA_BLEND_DST_INVDSTALPHA;
 162          break;
 163       default:
 164          FALLBACK( mmesa, MACH64_FALLBACK_BLEND_FUNC, GL_TRUE );
 165       }
 166
 167       m = 0xffffffff; /* Can't color mask and blend at the same time */
 168       s &= ~MACH64_ALPHA_FOG_EN_FOG; /* Can't fog and blend at the same time */
 169       s |=  MACH64_ALPHA_FOG_EN_ALPHA;
 170    } else {
 171       s &= ~MACH64_ALPHA_FOG_EN_ALPHA;
 172    }
 173
 174    if ( mmesa->setup.alpha_tst_cntl != a ) {
 175       mmesa->setup.alpha_tst_cntl = a;
 176       mmesa->dirty |= MACH64_UPLOAD_Z_ALPHA_CNTL;
 177    }
 178    if ( mmesa->setup.scale_3d_cntl != s ) {
 179       mmesa->setup.scale_3d_cntl = s;
 180       mmesa->dirty |= MACH64_UPLOAD_SCALE_3D_CNTL;
 181    }
 182    if ( mmesa->setup.dp_write_mask != m ) {
 183       mmesa->setup.dp_write_mask = m;
 184       mmesa->dirty |= MACH64_UPLOAD_DP_WRITE_MASK;
 185    }
 186 }
 187
 188 static void mach64DDAlphaFunc( GLcontext *ctx, GLenum func, GLfloat ref )
 189 {
 190    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 191
 192    FLUSH_BATCH( mmesa );
 193    mmesa->new_state |= MACH64_NEW_ALPHA;
 194 }
 195
 196 static void mach64DDBlendEquationSeparate( GLcontext *ctx,
 197                                            GLenum modeRGB, GLenum modeA )
 198 {
 199    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 200
 201    assert( modeRGB == modeA );
 202    FLUSH_BATCH( mmesa );
 203
 204    /* BlendEquation affects ColorLogicOpEnabled
 205     */
 206    FALLBACK( MACH64_CONTEXT(ctx), MACH64_FALLBACK_LOGICOP,
 207              (ctx->Color.ColorLogicOpEnabled &&
 208               ctx->Color.LogicOp != GL_COPY));
 209
 210    /* Can only do blend addition, not min, max, subtract, etc. */
 211    FALLBACK( MACH64_CONTEXT(ctx), MACH64_FALLBACK_BLEND_EQ,
 212              modeRGB != GL_FUNC_ADD);
 213
 214    mmesa->new_state |= MACH64_NEW_ALPHA;
 215 }
 216
 217 static void mach64DDBlendFuncSeparate( GLcontext *ctx,
 218                                        GLenum sfactorRGB, GLenum dfactorRGB,
 219                                        GLenum sfactorA, GLenum dfactorA )
 220 {
 221    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 222
 223    FLUSH_BATCH( mmesa );
 224    mmesa->new_state |= MACH64_NEW_ALPHA;
 225 }
 226
 227
 228 /* =============================================================
 229  * Depth testing
 230  */
 231
 232 static void mach64UpdateZMode( GLcontext *ctx )
 233 {
 234    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 235    GLuint z = mmesa->setup.z_cntl;
 236
 237    if ( MACH64_DEBUG & DEBUG_VERBOSE_MSG ) {
 238       fprintf( stderr, "%s:\n", __FUNCTION__ );
 239    }
 240
 241    if ( ctx->Depth.Test ) {
 242       z &= ~MACH64_Z_TEST_MASK;
 243
 244       switch ( ctx->Depth.Func ) {
 245       case GL_NEVER:
 246          z |= MACH64_Z_TEST_NEVER;
 247          break;
 248       case GL_ALWAYS:
 249          z |= MACH64_Z_TEST_ALWAYS;
 250          break;
 251       case GL_LESS:
 252          z |= MACH64_Z_TEST_LESS;
 253          break;
 254       case GL_LEQUAL:
 255          z |= MACH64_Z_TEST_LEQUAL;
 256          break;
 257       case GL_EQUAL:
 258          z |= MACH64_Z_TEST_EQUAL;
 259          break;
 260       case GL_GEQUAL:
 261          z |= MACH64_Z_TEST_GEQUAL;
 262          break;
 263       case GL_GREATER:
 264          z |= MACH64_Z_TEST_GREATER;
 265          break;
 266       case GL_NOTEQUAL:
 267          z |= MACH64_Z_TEST_NOTEQUAL;
 268          break;
 269       }
 270
 271       z |=  MACH64_Z_EN;
 272    } else {
 273       z &= ~MACH64_Z_EN;
 274    }
 275
 276    if ( ctx->Depth.Mask ) {
 277       z |=  MACH64_Z_MASK_EN;
 278    } else {
 279       z &= ~MACH64_Z_MASK_EN;
 280    }
 281
 282    if ( mmesa->setup.z_cntl != z ) {
 283       mmesa->setup.z_cntl = z;
 284       mmesa->dirty |= MACH64_UPLOAD_Z_ALPHA_CNTL;
 285    }
 286 }
 287
 288 static void mach64DDDepthFunc( GLcontext *ctx, GLenum func )
 289 {
 290    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 291
 292    FLUSH_BATCH( mmesa );
 293    mmesa->new_state |= MACH64_NEW_DEPTH;
 294 }
 295
 296 static void mach64DDDepthMask( GLcontext *ctx, GLboolean flag )
 297 {
 298    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 299
 300    FLUSH_BATCH( mmesa );
 301    mmesa->new_state |= MACH64_NEW_DEPTH;
 302 }
 303
 304 static void mach64DDClearDepth( GLcontext *ctx, GLclampd d )
 305 {
 306    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 307
 308    /* Always have a 16-bit depth buffer.
 309     */
 310    mmesa->ClearDepth = d * 0xffff;
 311 }
 312
 313
 314 /* =============================================================
 315  * Fog
 316  */
 317
 318 static void mach64UpdateFogAttrib( GLcontext *ctx )
 319 {
 320    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 321
 322    CARD32 s = mmesa->setup.scale_3d_cntl;
 323    GLubyte c[4];
 324    CARD32 col;
 325
 326    /* Can't fog if blending is on */
 327    if ( ctx->Color.BlendEnabled )
 328       return;
 329
 330    if ( ctx->Fog.Enabled ) {
 331       s |= MACH64_ALPHA_FOG_EN_FOG;
 332       s &= ~(MACH64_ALPHA_BLEND_SRC_MASK |
 333              MACH64_ALPHA_BLEND_DST_MASK |
 334              MACH64_ALPHA_BLEND_SAT);
 335       /* From Utah-glx: "fog color is now dest and fog factor is alpha, so
 336        * use GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA"
 337        */
 338       s |= (MACH64_ALPHA_BLEND_SRC_SRCALPHA |
 339             MACH64_ALPHA_BLEND_DST_INVSRCALPHA);
 340       /* From Utah-glx: "can't use texture alpha when fogging" */
 341       s &= ~MACH64_TEX_MAP_AEN;
 342    } else {
 343       s &= ~(MACH64_ALPHA_BLEND_SRC_MASK |
 344              MACH64_ALPHA_BLEND_DST_MASK |
 345              MACH64_ALPHA_BLEND_SAT);
 346       s |= (MACH64_ALPHA_BLEND_SRC_ONE |
 347             MACH64_ALPHA_BLEND_DST_ZERO);
 348       s &= ~MACH64_ALPHA_FOG_EN_FOG;
 349    }
 350
 351    c[0] = FLOAT_TO_UBYTE( ctx->Fog.Color[0] );
 352    c[1] = FLOAT_TO_UBYTE( ctx->Fog.Color[1] );
 353    c[2] = FLOAT_TO_UBYTE( ctx->Fog.Color[2] );
 354    c[3] = FLOAT_TO_UBYTE( ctx->Fog.Color[3] );
 355
 356    col = mach64PackColor( 4, c[0], c[1], c[2], c[3] );
 357
 358    if ( mmesa->setup.dp_fog_clr != col ) {
 359       mmesa->setup.dp_fog_clr = col;
 360       mmesa->dirty |= MACH64_UPLOAD_DP_FOG_CLR;
 361    }
 362    if ( mmesa->setup.scale_3d_cntl != s ) {
 363       mmesa->setup.scale_3d_cntl = s;
 364       mmesa->dirty |= MACH64_UPLOAD_SCALE_3D_CNTL;
 365    }
 366
 367 }
 368
 369 static void mach64DDFogfv( GLcontext *ctx, GLenum pname, const GLfloat *param )
 370 {
 371    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 372
 373    FLUSH_BATCH( mmesa );
 374    mmesa->new_state |= MACH64_NEW_FOG;
 375 }
 376
 377
 378 /* =============================================================
 379  * Clipping
 380  */
 381
 382 static void mach64UpdateClipping( GLcontext *ctx )
 383 {
 384    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 385    mach64ScreenPtr mach64Screen = mmesa->mach64Screen;
 386
 387    if ( mmesa->driDrawable ) {
 388       __DRIdrawable *drawable = mmesa->driDrawable;
 389       int x1 = 0;
 390       int y1 = 0;
 391       int x2 = drawable->w - 1;
 392       int y2 = drawable->h - 1;
 393
 394       if ( ctx->Scissor.Enabled ) {
 395          if ( ctx->Scissor.X > x1 ) {
 396             x1 = ctx->Scissor.X;
 397          }
 398          if ( drawable->h - ctx->Scissor.Y - ctx->Scissor.Height > y1 ) {
 399             y1 = drawable->h - ctx->Scissor.Y - ctx->Scissor.Height;
 400          }
 401          if ( ctx->Scissor.X + ctx->Scissor.Width - 1 < x2 ) {
 402             x2 = ctx->Scissor.X + ctx->Scissor.Width - 1;
 403          }
 404          if ( drawable->h - ctx->Scissor.Y - 1 < y2 ) {
 405             y2 = drawable->h - ctx->Scissor.Y - 1;
 406          }
 407       }
 408
 409       x1 += drawable->x;
 410       y1 += drawable->y;
 411       x2 += drawable->x;
 412       y2 += drawable->y;
 413
 414       /* clamp to screen borders */
 415       if (x1 < 0) x1 = 0;
 416       if (y1 < 0) y1 = 0;
 417       if (x2 < 0) x2 = 0;
 418       if (y2 < 0) y2 = 0;
 419       if (x2 > mach64Screen->width-1) x2 = mach64Screen->width-1;
 420       if (y2 > mach64Screen->height-1) y2 = mach64Screen->height-1;
 421
 422       if ( MACH64_DEBUG & DEBUG_VERBOSE_MSG ) {
 423          fprintf( stderr, "%s: drawable %3d %3d %3d %3d\n",
 424                   __FUNCTION__,
 425                   drawable->x,
 426                   drawable->y,
 427                   drawable->w,
 428                   drawable->h );
 429          fprintf( stderr, "%s:  scissor %3d %3d %3d %3d\n",
 430                   __FUNCTION__,
 431                   ctx->Scissor.X,
 432                   ctx->Scissor.Y,
 433                   ctx->Scissor.Width,
 434                   ctx->Scissor.Height );
 435          fprintf( stderr, "%s:    final %3d %3d %3d %3d\n",
 436                   __FUNCTION__, x1, y1, x2, y2 );
 437          fprintf( stderr, "\n" );
 438       }
 439
 440       mmesa->setup.sc_top_bottom = ((y1 << 0) |
 441                                     (y2 << 16));
 442
 443       mmesa->setup.sc_left_right = ((x1 << 0) |
 444                                     (x2 << 16));
 445
 446        /* UPLOAD_MISC reduces the dirty state, we just need to
 447        * emit the scissor to the SAREA.  We need to dirty cliprects
 448        * since the scissor and cliprects are intersected to update the
 449        * single hardware scissor
 450        */
 451       mmesa->dirty |= MACH64_UPLOAD_MISC | MACH64_UPLOAD_CLIPRECTS;
 452    }
 453 }
 454
 455 static void mach64DDScissor( GLcontext *ctx,
 456                              GLint x, GLint y, GLsizei w, GLsizei h )
 457 {
 458    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 459
 460    FLUSH_BATCH( mmesa );
 461    mmesa->new_state |= MACH64_NEW_CLIP;
 462 }
 463
 464
 465 /* =============================================================
 466  * Culling
 467  */
 468
 469 static void mach64UpdateCull( GLcontext *ctx )
 470 {
 471    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 472    GLfloat backface_sign = 1;
 473
 474    if ( ctx->Polygon.CullFlag /*&& ctx->PB->primitive == GL_POLYGON*/ ) {
 475       backface_sign = 1;
 476       switch ( ctx->Polygon.CullFaceMode ) {
 477       case GL_BACK:
 478          if ( ctx->Polygon.FrontFace == GL_CCW )
 479             backface_sign = -1;
 480          break;
 481       case GL_FRONT:
 482          if ( ctx->Polygon.FrontFace != GL_CCW )
 483             backface_sign = -1;
 484          break;
 485       default:
 486       case GL_FRONT_AND_BACK:
 487          backface_sign = 0;
 488          break;
 489       }
 490    } else {
 491       backface_sign = 0;
 492    }
 493
 494    mmesa->backface_sign = backface_sign;
 495
 496 }
 497
 498 static void mach64DDCullFace( GLcontext *ctx, GLenum mode )
 499 {
 500    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 501
 502    FLUSH_BATCH( mmesa );
 503    mmesa->new_state |= MACH64_NEW_CULL;
 504 }
 505
 506 static void mach64DDFrontFace( GLcontext *ctx, GLenum mode )
 507 {
 508    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 509
 510    FLUSH_BATCH( mmesa );
 511    mmesa->new_state |= MACH64_NEW_CULL;
 512 }
 513
 514
 515 /* =============================================================
 516  * Masks
 517  */
 518
 519 static void mach64UpdateMasks( GLcontext *ctx )
 520 {
 521    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 522    GLuint mask = 0xffffffff;
 523
 524    /* mach64 can't color mask with alpha blending enabled */
 525    if ( !ctx->Color.BlendEnabled ) {
 526       mask = mach64PackColor( mmesa->mach64Screen->cpp,
 527                               ctx->Color.ColorMask[0][RCOMP],
 528                               ctx->Color.ColorMask[0][GCOMP],
 529                               ctx->Color.ColorMask[0][BCOMP],
 530                               ctx->Color.ColorMask[0][ACOMP] );
 531    }
 532
 533    if ( mmesa->setup.dp_write_mask != mask ) {
 534       mmesa->setup.dp_write_mask = mask;
 535       mmesa->dirty |= MACH64_UPLOAD_DP_WRITE_MASK;
 536    }
 537 }
 538
 539 static void mach64DDColorMask( GLcontext *ctx,
 540                                GLboolean r, GLboolean g,
 541                                GLboolean b, GLboolean a )
 542 {
 543    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 544
 545    FLUSH_BATCH( mmesa );
 546    mmesa->new_state |= MACH64_NEW_MASKS;
 547 }
 548
 549
 550 /* =============================================================
 551  * Rendering attributes
 552  *
 553  * We really don't want to recalculate all this every time we bind a
 554  * texture.  These things shouldn't change all that often, so it makes
 555  * sense to break them out of the core texture state update routines.
 556  */
 557
 558 static void mach64UpdateSpecularLighting( GLcontext *ctx )
 559 {
 560    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 561    GLuint a = mmesa->setup.alpha_tst_cntl;
 562
 563    if ( MACH64_DEBUG & DEBUG_VERBOSE_MSG ) {
 564       fprintf( stderr, "%s:\n", __FUNCTION__ );
 565    }
 566
 567    if ( ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR  &&
 568         ctx->Light.Enabled ) {
 569       a |=  MACH64_SPECULAR_LIGHT_EN;
 570    } else {
 571       a &= ~MACH64_SPECULAR_LIGHT_EN;
 572    }
 573
 574    if ( mmesa->setup.alpha_tst_cntl != a ) {
 575       mmesa->setup.alpha_tst_cntl = a;
 576       mmesa->dirty |= MACH64_UPLOAD_Z_ALPHA_CNTL;
 577       mmesa->new_state |= MACH64_NEW_CONTEXT;
 578    }
 579 }
 580
 581 static void mach64DDLightModelfv( GLcontext *ctx, GLenum pname,
 582                                   const GLfloat *param )
 583 {
 584    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 585
 586    if ( pname == GL_LIGHT_MODEL_COLOR_CONTROL ) {
 587       FLUSH_BATCH( mmesa );
 588       mach64UpdateSpecularLighting(ctx);
 589    }
 590 }
 591
 592 static void mach64DDShadeModel( GLcontext *ctx, GLenum mode )
 593 {
 594    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 595    GLuint s = mmesa->setup.setup_cntl;
 596
 597    s &= ~MACH64_FLAT_SHADE_MASK;
 598
 599    switch ( mode ) {
 600    case GL_FLAT:
 601       s |= MACH64_FLAT_SHADE_VERTEX_3;
 602       break;
 603    case GL_SMOOTH:
 604       s |= MACH64_FLAT_SHADE_OFF;
 605       break;
 606    default:
 607       return;
 608    }
 609
 610    if ( mmesa->setup.setup_cntl != s ) {
 611       FLUSH_BATCH( mmesa );
 612       mmesa->setup.setup_cntl = s;
 613
 614       mmesa->dirty |= MACH64_UPLOAD_SETUP_CNTL;
 615    }
 616 }
 617
 618
 619 /* =============================================================
 620  * Viewport
 621  */
 622
 623
 624 void mach64CalcViewport( GLcontext *ctx )
 625 {
 626    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 627    const GLfloat *v = ctx->Viewport._WindowMap.m;
 628    GLfloat *m = mmesa->hw_viewport;
 629
 630    /* See also mach64_translate_vertex.
 631     */
 632    m[MAT_SX] =   v[MAT_SX];
 633    m[MAT_TX] =   v[MAT_TX] + (GLfloat)mmesa->drawX + SUBPIXEL_X;
 634    m[MAT_SY] = - v[MAT_SY];
 635    m[MAT_TY] = - v[MAT_TY] + mmesa->driDrawable->h + (GLfloat)mmesa->drawY + SUBPIXEL_Y;
 636    m[MAT_SZ] =   v[MAT_SZ] * mmesa->depth_scale;
 637    m[MAT_TZ] =   v[MAT_TZ] * mmesa->depth_scale;
 638
 639    mmesa->SetupNewInputs = ~0;
 640 }
 641
 642 static void mach64Viewport( GLcontext *ctx,
 643                           GLint x, GLint y,
 644                           GLsizei width, GLsizei height )
 645 {
 646    mach64CalcViewport( ctx );
 647 }
 648
 649 static void mach64DepthRange( GLcontext *ctx,
 650                             GLclampd nearval, GLclampd farval )
 651 {
 652    mach64CalcViewport( ctx );
 653 }
 654
 655
 656 /* =============================================================
 657  * Miscellaneous
 658  */
 659
 660 static void mach64DDClearColor( GLcontext *ctx,
 661                                 const GLfloat color[4] )
 662 {
 663    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 664    GLubyte c[4];
 665
 666    CLAMPED_FLOAT_TO_UBYTE(c[0], color[0]);
 667    CLAMPED_FLOAT_TO_UBYTE(c[1], color[1]);
 668    CLAMPED_FLOAT_TO_UBYTE(c[2], color[2]);
 669    CLAMPED_FLOAT_TO_UBYTE(c[3], color[3]);
 670
 671    mmesa->ClearColor = mach64PackColor( mmesa->mach64Screen->cpp,
 672                                         c[0], c[1], c[2], c[3] );
 673 }
 674
 675 static void mach64DDLogicOpCode( GLcontext *ctx, GLenum opcode )
 676 {
 677    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 678
 679    if ( ctx->Color.ColorLogicOpEnabled ) {
 680       FLUSH_BATCH( mmesa );
 681
 682       FALLBACK( mmesa, MACH64_FALLBACK_LOGICOP, opcode != GL_COPY);
 683    }
 684 }
 685
 686 void mach64SetCliprects( GLcontext *ctx, GLenum mode )
 687 {
 688    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 689    __DRIdrawable *dPriv = mmesa->driDrawable;
 690
 691    switch ( mode ) {
 692    case GL_FRONT_LEFT:
 693       mmesa->numClipRects = dPriv->numClipRects;
 694       mmesa->pClipRects = dPriv->pClipRects;
 695       mmesa->drawX = dPriv->x;
 696       mmesa->drawY = dPriv->y;
 697       break;
 698    case GL_BACK_LEFT:
 699       if ( dPriv->numBackClipRects == 0 ) {
 700          mmesa->numClipRects = dPriv->numClipRects;
 701          mmesa->pClipRects = dPriv->pClipRects;
 702          mmesa->drawX = dPriv->x;
 703          mmesa->drawY = dPriv->y;
 704       } else {
 705          mmesa->numClipRects = dPriv->numBackClipRects;
 706          mmesa->pClipRects = dPriv->pBackClipRects;
 707          mmesa->drawX = dPriv->backX;
 708          mmesa->drawY = dPriv->backY;
 709       }
 710       break;
 711    default:
 712       return;
 713    }
 714
 715    mach64UpdateClipping( ctx );
 716
 717    mmesa->dirty |= MACH64_UPLOAD_CLIPRECTS;
 718 }
 719
 720 static void mach64DDDrawBuffer( GLcontext *ctx, GLenum mode )
 721 {
 722    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 723
 724    FLUSH_BATCH( mmesa );
 725
 726    if (ctx->DrawBuffer->_NumColorDrawBuffers != 1) {
 727       /* GL_NONE or GL_FRONT_AND_BACK or stereo left&right, etc */
 728       FALLBACK( mmesa, MACH64_FALLBACK_DRAW_BUFFER, GL_TRUE );
 729       return;
 730    }
 731
 732    switch ( ctx->DrawBuffer->_ColorDrawBufferIndexes[0] ) {
 733    case BUFFER_FRONT_LEFT:
 734       FALLBACK( mmesa, MACH64_FALLBACK_DRAW_BUFFER, GL_FALSE );
 735       mach64SetCliprects( ctx, GL_FRONT_LEFT );
 736       if (MACH64_DEBUG & DEBUG_VERBOSE_MSG)
 737          fprintf(stderr,"%s: BUFFER_BIT_FRONT_LEFT\n", __FUNCTION__);
 738       break;
 739    case BUFFER_BACK_LEFT:
 740       FALLBACK( mmesa, MACH64_FALLBACK_DRAW_BUFFER, GL_FALSE );
 741       mach64SetCliprects( ctx, GL_BACK_LEFT );
 742       if (MACH64_DEBUG & DEBUG_VERBOSE_MSG)
 743          fprintf(stderr,"%s: BUFFER_BIT_BACK_LEFT\n", __FUNCTION__);
 744       break;
 745    default:
 746       FALLBACK( mmesa, MACH64_FALLBACK_DRAW_BUFFER, GL_TRUE );
 747       if (MACH64_DEBUG & DEBUG_VERBOSE_MSG)
 748          fprintf(stderr,"%s: fallback (mode=%d)\n", __FUNCTION__, mode);
 749       break;
 750    }
 751
 752    mmesa->setup.dst_off_pitch = (((mmesa->drawPitch/8) << 22) |
 753                                  (mmesa->drawOffset >> 3));
 754
 755    mmesa->dirty |= MACH64_UPLOAD_DST_OFF_PITCH;
 756 }
 757
 758 static void mach64DDReadBuffer( GLcontext *ctx, GLenum mode )
 759 {
 760    /* nothing, until we implement h/w glRead/CopyPixels or CopyTexImage */
 761 }
 762
 763 /* =============================================================
 764  * State enable/disable
 765  */
 766
 767 static void mach64DDEnable( GLcontext *ctx, GLenum cap, GLboolean state )
 768 {
 769    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 770
 771    if ( MACH64_DEBUG & DEBUG_VERBOSE_API ) {
 772       fprintf( stderr, "%s( %s = %s )\n",
 773                __FUNCTION__, _mesa_lookup_enum_by_nr( cap ),
 774                state ? "GL_TRUE" : "GL_FALSE" );
 775    }
 776
 777    switch ( cap ) {
 778    case GL_ALPHA_TEST:
 779       FLUSH_BATCH( mmesa );
 780       mmesa->new_state |= MACH64_NEW_ALPHA;
 781       break;
 782
 783    case GL_BLEND:
 784       FLUSH_BATCH( mmesa );
 785       mmesa->new_state |= MACH64_NEW_ALPHA;
 786
 787       /* enable(GL_BLEND) affects ColorLogicOpEnabled.
 788        */
 789       FALLBACK( mmesa, MACH64_FALLBACK_LOGICOP,
 790                 (ctx->Color.ColorLogicOpEnabled &&
 791                  ctx->Color.LogicOp != GL_COPY));
 792       break;
 793
 794    case GL_CULL_FACE:
 795       FLUSH_BATCH( mmesa );
 796       mmesa->new_state |= MACH64_NEW_CULL;
 797       break;
 798
 799    case GL_DEPTH_TEST:
 800       FLUSH_BATCH( mmesa );
 801       mmesa->new_state |= MACH64_NEW_DEPTH;
 802       break;
 803
 804    case GL_DITHER:
 805       do {
 806          GLuint s = mmesa->setup.scale_3d_cntl;
 807          FLUSH_BATCH( mmesa );
 808
 809          if ( ctx->Color.DitherFlag ) {
 810             /* Dithering causes problems w/ 24bpp depth */
 811             if ( mmesa->mach64Screen->cpp == 4 )
 812                s |=  MACH64_ROUND_EN;
 813             else
 814                s |=  MACH64_DITHER_EN;
 815          } else {
 816             s &= ~MACH64_DITHER_EN;
 817             s &= ~MACH64_ROUND_EN;
 818          }
 819
 820          if ( mmesa->setup.scale_3d_cntl != s ) {
 821             mmesa->setup.scale_3d_cntl = s;
 822             mmesa->dirty |= ( MACH64_UPLOAD_SCALE_3D_CNTL );
 823          }
 824       } while (0);
 825       break;
 826
 827    case GL_FOG:
 828       FLUSH_BATCH( mmesa );
 829       mmesa->new_state |= MACH64_NEW_FOG;
 830       break;
 831
 832    case GL_INDEX_LOGIC_OP:
 833    case GL_COLOR_LOGIC_OP:
 834       FLUSH_BATCH( mmesa );
 835       FALLBACK( mmesa, MACH64_FALLBACK_LOGICOP,
 836                 state && ctx->Color.LogicOp != GL_COPY );
 837       break;
 838
 839    case GL_LIGHTING:
 840       mach64UpdateSpecularLighting(ctx);
 841       break;
 842
 843    case GL_SCISSOR_TEST:
 844       FLUSH_BATCH( mmesa );
 845       mmesa->scissor = state;
 846       mmesa->new_state |= MACH64_NEW_CLIP;
 847       break;
 848
 849    case GL_STENCIL_TEST:
 850       FLUSH_BATCH( mmesa );
 851       FALLBACK( mmesa, MACH64_FALLBACK_STENCIL, state );
 852       break;
 853
 854    case GL_TEXTURE_1D:
 855    case GL_TEXTURE_2D:
 856    case GL_TEXTURE_3D:
 857       FLUSH_BATCH( mmesa );
 858       mmesa->new_state |= MACH64_NEW_TEXTURE;
 859       break;
 860
 861    default:
 862       return;
 863    }
 864 }
 865
 866 /* =============================================================
 867  * Render mode
 868  */
 869
 870 static void mach64DDRenderMode( GLcontext *ctx, GLenum mode )
 871 {
 872    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 873    FALLBACK( mmesa, MACH64_FALLBACK_RENDER_MODE, (mode != GL_RENDER) );
 874 }
 875
 876 /* =============================================================
 877  * State initialization, management
 878  */
 879
 880 static void mach64DDPrintDirty( const char *msg, GLuint state )
 881 {
 882    fprintf( stderr,
 883             "%s: (0x%x) %s%s%s%s%s%s%s%s%s%s%s%s\n",
 884             msg,
 885             state,
 886             (state & MACH64_UPLOAD_DST_OFF_PITCH) ? "dst_off_pitch, " : "",
 887             (state & MACH64_UPLOAD_Z_ALPHA_CNTL)  ? "z_alpha_cntl, " : "",
 888             (state & MACH64_UPLOAD_SCALE_3D_CNTL) ? "scale_3d_cntl, " : "",
 889             (state & MACH64_UPLOAD_DP_FOG_CLR)    ? "dp_fog_clr, " : "",
 890             (state & MACH64_UPLOAD_DP_WRITE_MASK) ? "dp_write_mask, " : "",
 891             (state & MACH64_UPLOAD_DP_PIX_WIDTH)  ? "dp_pix_width, " : "",
 892             (state & MACH64_UPLOAD_SETUP_CNTL)    ? "setup_cntl, " : "",
 893             (state & MACH64_UPLOAD_MISC)          ? "misc, " : "",
 894             (state & MACH64_UPLOAD_TEXTURE)       ? "texture, " : "",
 895             (state & MACH64_UPLOAD_TEX0IMAGE)     ? "tex0 image, " : "",
 896             (state & MACH64_UPLOAD_TEX1IMAGE)     ? "tex1 image, " : "",
 897             (state & MACH64_UPLOAD_CLIPRECTS)     ? "cliprects, " : "" );
 898 }
 899
 900 /*
 901  * Load the current context's state into the hardware.
 902  *
 903  * NOTE: Be VERY careful about ensuring the context state is marked for
 904  * upload, the only place it shouldn't be uploaded is when the setup
 905  * state has changed in ReducedPrimitiveChange as this comes right after
 906  * a state update.
 907  *
 908  * Blits of any type should always upload the context and masks after
 909  * they are done.
 910  */
 911 void mach64EmitHwStateLocked( mach64ContextPtr mmesa )
 912 {
 913    drm_mach64_sarea_t *sarea = mmesa->sarea;
 914    drm_mach64_context_regs_t *regs = &(mmesa->setup);
 915    mach64TexObjPtr t0 = mmesa->CurrentTexObj[0];
 916    mach64TexObjPtr t1 = mmesa->CurrentTexObj[1];
 917
 918    if ( MACH64_DEBUG & DEBUG_VERBOSE_MSG ) {
 919       mach64DDPrintDirty( __FUNCTION__, mmesa->dirty );
 920    }
 921
 922    if ( t0 && t1 && mmesa->mach64Screen->numTexHeaps > 1 ) {
 923       if (t0->heap != t1->heap ||
 924              (mmesa->dirty & MACH64_UPLOAD_TEX0IMAGE) ||
 925              (mmesa->dirty & MACH64_UPLOAD_TEX1IMAGE))
 926          mach64UploadMultiTexImages( mmesa, t0, t1 );
 927    } else {
 928       if ( mmesa->dirty & MACH64_UPLOAD_TEX0IMAGE ) {
 929          if ( t0 ) mach64UploadTexImages( mmesa, t0 );
 930       }
 931       if ( mmesa->dirty & MACH64_UPLOAD_TEX1IMAGE ) {
 932          if ( t1 ) mach64UploadTexImages( mmesa, t1 );
 933       }
 934    }
 935
 936    if ( mmesa->dirty & (MACH64_UPLOAD_CONTEXT | MACH64_UPLOAD_MISC) ) {
 937       memcpy( &sarea->context_state, regs,
 938               MACH64_NR_CONTEXT_REGS * sizeof(GLuint) );
 939    }
 940
 941    if ( mmesa->dirty & MACH64_UPLOAD_TEXTURE ) {
 942       mach64EmitTexStateLocked( mmesa, t0, t1 );
 943    }
 944
 945    sarea->vertsize = mmesa->vertex_size;
 946
 947    /* Turn off the texture cache flushing.
 948     */
 949    mmesa->setup.tex_cntl &= ~MACH64_TEX_CACHE_FLUSH;
 950
 951    sarea->dirty |= mmesa->dirty;
 952
 953    mmesa->dirty &= MACH64_UPLOAD_CLIPRECTS;
 954 }
 955
 956 static void mach64DDPrintState( const char *msg, GLuint flags )
 957 {
 958    fprintf( stderr,
 959             "%s: (0x%x) %s%s%s%s%s%s%s%s%s\n",
 960             msg,
 961             flags,
 962             (flags & MACH64_NEW_CONTEXT)        ? "context, " : "",
 963             (flags & MACH64_NEW_ALPHA)          ? "alpha, " : "",
 964             (flags & MACH64_NEW_DEPTH)          ? "depth, " : "",
 965             (flags & MACH64_NEW_FOG)            ? "fog, " : "",
 966             (flags & MACH64_NEW_CLIP)           ? "clip, " : "",
 967             (flags & MACH64_NEW_TEXTURE)        ? "texture, " : "",
 968             (flags & MACH64_NEW_CULL)           ? "cull, " : "",
 969             (flags & MACH64_NEW_MASKS)          ? "masks, " : "",
 970             (flags & MACH64_NEW_WINDOW)         ? "window, " : "" );
 971 }
 972
 973 /* Update the hardware state */
 974 void mach64DDUpdateHWState( GLcontext *ctx )
 975 {
 976    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 977    int new_state = mmesa->new_state;
 978
 979    if ( MACH64_DEBUG & DEBUG_VERBOSE_MSG ) {
 980       fprintf( stderr, "%s:\n", __FUNCTION__ );
 981    }
 982
 983    if ( new_state )
 984    {
 985       FLUSH_BATCH( mmesa );
 986
 987       mmesa->new_state = 0;
 988
 989       if ( MACH64_DEBUG & DEBUG_VERBOSE_MSG )
 990          mach64DDPrintState( __FUNCTION__, new_state );
 991
 992       /* Update the various parts of the context's state.
 993        */
 994       if ( new_state & MACH64_NEW_ALPHA )
 995          mach64UpdateAlphaMode( ctx );
 996
 997       if ( new_state & MACH64_NEW_DEPTH )
 998          mach64UpdateZMode( ctx );
 999
1000       if ( new_state & MACH64_NEW_FOG )
1001          mach64UpdateFogAttrib( ctx );
1002
1003       if ( new_state & MACH64_NEW_CLIP )
1004          mach64UpdateClipping( ctx );
1005
1006       if ( new_state & MACH64_NEW_WINDOW )
1007          mach64CalcViewport( ctx );
1008
1009       if ( new_state & MACH64_NEW_CULL )
1010          mach64UpdateCull( ctx );
1011
1012       if ( new_state & MACH64_NEW_MASKS )
1013          mach64UpdateMasks( ctx );
1014
1015       if ( new_state & MACH64_NEW_TEXTURE )
1016          mach64UpdateTextureState( ctx );
1017    }
1018 }
1019
1020
1021 static void mach64DDInvalidateState( GLcontext *ctx, GLuint new_state )
1022 {
1023    _swrast_InvalidateState( ctx, new_state );
1024    _swsetup_InvalidateState( ctx, new_state );
1025    _vbo_InvalidateState( ctx, new_state );
1026    _tnl_InvalidateState( ctx, new_state );
1027    MACH64_CONTEXT(ctx)->NewGLState |= new_state;
1028 }
1029
1030
1031 /* Initialize the context's hardware state */
1032 void mach64DDInitState( mach64ContextPtr mmesa )
1033 {
1034    GLuint format;
1035
1036    switch ( mmesa->mach64Screen->cpp ) {
1037    case 2:
1038       format = MACH64_DATATYPE_RGB565;
1039       break;
1040    case 4:
1041       format = MACH64_DATATYPE_ARGB8888;
1042       break;
1043    default:
1044       fprintf( stderr, "Error: Unsupported pixel depth... exiting\n" );
1045       exit( -1 );
1046    }
1047
1048    /* Always have a 16-bit depth buffer
1049     * but Z coordinates are specified in 16.1 format to the setup engine.
1050     */
1051    mmesa->depth_scale = 2.0;
1052
1053    mmesa->ClearColor = 0x00000000;
1054    mmesa->ClearDepth = 0x0000ffff;
1055
1056    mmesa->Fallback = 0;
1057
1058    if ( mmesa->glCtx->Visual.doubleBufferMode ) {
1059       mmesa->drawOffset = mmesa->readOffset = mmesa->mach64Screen->backOffset;
1060       mmesa->drawPitch  = mmesa->readPitch  = mmesa->mach64Screen->backPitch;
1061    } else {
1062       mmesa->drawOffset = mmesa->readOffset = mmesa->mach64Screen->frontOffset;
1063       mmesa->drawPitch  = mmesa->readPitch  = mmesa->mach64Screen->frontPitch;
1064    }
1065
1066    /* Harware state:
1067     */
1068    mmesa->setup.dst_off_pitch = (((mmesa->drawPitch/8) << 22) |
1069                                  (mmesa->drawOffset >> 3));
1070
1071    mmesa->setup.z_off_pitch = (((mmesa->mach64Screen->depthPitch/8) << 22) |
1072                                (mmesa->mach64Screen->depthOffset >> 3));
1073
1074    mmesa->setup.z_cntl = (MACH64_Z_TEST_LESS |
1075                           MACH64_Z_MASK_EN);
1076
1077    mmesa->setup.alpha_tst_cntl = (MACH64_ALPHA_TEST_ALWAYS |
1078                                   MACH64_ALPHA_DST_SRCALPHA |
1079                                   MACH64_ALPHA_TST_SRC_TEXEL |
1080                                   (0 << MACH64_REF_ALPHA_SHIFT));
1081
1082    mmesa->setup.scale_3d_cntl = (MACH64_SCALE_PIX_EXPAND_DYNAMIC_RANGE |
1083                                  /*  MACH64_SCALE_DITHER_ERROR_DIFFUSE | */
1084                                  MACH64_SCALE_DITHER_2D_TABLE |
1085                                  /*  MACH64_DITHER_INIT_CURRENT | */
1086                                  MACH64_DITHER_INIT_RESET |
1087                                  MACH64_SCALE_3D_FCN_SHADE |
1088                                  MACH64_ALPHA_FOG_DIS |
1089                                  MACH64_ALPHA_BLEND_SRC_ONE |
1090                                  MACH64_ALPHA_BLEND_DST_ZERO |
1091                                  MACH64_TEX_LIGHT_FCN_MODULATE |
1092                                  MACH64_MIP_MAP_DISABLE |
1093                                  MACH64_BILINEAR_TEX_EN |
1094                                  MACH64_TEX_BLEND_FCN_LINEAR);
1095
1096    /* GL spec says dithering initially enabled, but dithering causes
1097     * problems w/ 24bpp depth
1098     */
1099    if ( mmesa->mach64Screen->cpp == 4 )
1100       mmesa->setup.scale_3d_cntl |= MACH64_ROUND_EN;
1101    else
1102       mmesa->setup.scale_3d_cntl |= MACH64_DITHER_EN;
1103
1104    mmesa->setup.sc_left_right = 0x1fff0000;
1105    mmesa->setup.sc_top_bottom = 0x3fff0000;
1106
1107    mmesa->setup.dp_fog_clr    = 0x00ffffff;
1108    mmesa->setup.dp_write_mask = 0xffffffff;
1109
1110    mmesa->setup.dp_pix_width = ((format << 0) |
1111                                 (format << 4) |
1112                                 (format << 8) |
1113                                 (format << 16) |
1114                                 (format << 28));
1115
1116    mmesa->setup.dp_mix = (MACH64_BKGD_MIX_S |
1117                           MACH64_FRGD_MIX_S);
1118    mmesa->setup.dp_src = (MACH64_BKGD_SRC_3D |
1119                           MACH64_FRGD_SRC_3D |
1120                           MACH64_MONO_SRC_ONE);
1121
1122    mmesa->setup.clr_cmp_cntl  = 0x00000000;
1123    mmesa->setup.gui_traj_cntl = (MACH64_DST_X_LEFT_TO_RIGHT |
1124                                  MACH64_DST_Y_TOP_TO_BOTTOM);
1125
1126    mmesa->setup.setup_cntl = (MACH64_FLAT_SHADE_OFF |
1127                               MACH64_SOLID_MODE_OFF |
1128                               MACH64_LOG_MAX_INC_ADJ);
1129    mmesa->setup.setup_cntl = 0;
1130
1131    mmesa->setup.tex_size_pitch = 0x00000000;
1132
1133    mmesa->setup.tex_cntl = ((0 << MACH64_LOD_BIAS_SHIFT) |
1134                             (0 << MACH64_COMP_FACTOR_SHIFT) |
1135                             MACH64_COMP_COMBINE_MODULATE |
1136                             MACH64_COMP_BLEND_NEAREST |
1137                             MACH64_COMP_FILTER_NEAREST |
1138                             /* MACH64_TEXTURE_TILING | */
1139 #ifdef MACH64_PREMULT_TEXCOORDS
1140                             MACH64_TEX_ST_DIRECT |
1141 #endif
1142                             MACH64_TEX_SRC_LOCAL |
1143                             MACH64_TEX_UNCOMPRESSED |
1144                             MACH64_TEX_CACHE_FLUSH |
1145                             MACH64_TEX_CACHE_SIZE_4K);
1146
1147    mmesa->setup.secondary_tex_off = 0x00000000;
1148    mmesa->setup.tex_offset = 0x00000000;
1149
1150    mmesa->new_state = MACH64_NEW_ALL;
1151 }
1152
1153 /* Initialize the driver's state functions.
1154   */
1155 void mach64DDInitStateFuncs( GLcontext *ctx )
1156 {
1157    ctx->Driver.UpdateState              = mach64DDInvalidateState;
1158
1159    ctx->Driver.ClearIndex               = NULL;
1160    ctx->Driver.ClearColor               = mach64DDClearColor;
1161    ctx->Driver.DrawBuffer               = mach64DDDrawBuffer;
1162    ctx->Driver.ReadBuffer               = mach64DDReadBuffer;
1163
1164    ctx->Driver.IndexMask                = NULL;
1165    ctx->Driver.ColorMask                = mach64DDColorMask;
1166    ctx->Driver.AlphaFunc                = mach64DDAlphaFunc;
1167    ctx->Driver.BlendEquationSeparate    = mach64DDBlendEquationSeparate;
1168    ctx->Driver.BlendFuncSeparate        = mach64DDBlendFuncSeparate;
1169    ctx->Driver.ClearDepth               = mach64DDClearDepth;
1170    ctx->Driver.CullFace                 = mach64DDCullFace;
1171    ctx->Driver.FrontFace                = mach64DDFrontFace;
1172    ctx->Driver.DepthFunc                = mach64DDDepthFunc;
1173    ctx->Driver.DepthMask                = mach64DDDepthMask;
1174    ctx->Driver.Enable                   = mach64DDEnable;
1175    ctx->Driver.Fogfv                    = mach64DDFogfv;
1176    ctx->Driver.Hint                     = NULL;
1177    ctx->Driver.Lightfv                  = NULL;
1178    ctx->Driver.LightModelfv             = mach64DDLightModelfv;
1179    ctx->Driver.LogicOpcode              = mach64DDLogicOpCode;
1180    ctx->Driver.PolygonMode              = NULL;
1181    ctx->Driver.PolygonStipple           = NULL;
1182    ctx->Driver.RenderMode               = mach64DDRenderMode;
1183    ctx->Driver.Scissor                  = mach64DDScissor;
1184    ctx->Driver.ShadeModel               = mach64DDShadeModel;
1185
1186    ctx->Driver.DepthRange               = mach64DepthRange;
1187    ctx->Driver.Viewport                 = mach64Viewport;
1188 }