src/mesa/drivers/dri/r300/r300_state.c

   1 /*
   2 Copyright (C) The Weather Channel, Inc.  2002.
   3 Copyright (C) 2004 Nicolai Haehnle.
   4 All Rights Reserved.
   5
   6 The Weather Channel (TM) funded Tungsten Graphics to develop the
   7 initial release of the Radeon 8500 driver under the XFree86 license.
   8 This notice must be preserved.
   9
  10 Permission is hereby granted, free of charge, to any person obtaining
  11 a copy of this software and associated documentation files (the
  12 "Software"), to deal in the Software without restriction, including
  13 without limitation the rights to use, copy, modify, merge, publish,
  14 distribute, sublicense, and/or sell copies of the Software, and to
  15 permit persons to whom the Software is furnished to do so, subject to
  16 the following conditions:
  17
  18 The above copyright notice and this permission notice (including the
  19 next paragraph) shall be included in all copies or substantial
  20 portions of the Software.
  21
  22 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  25 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  26 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29
  30 **************************************************************************/
  31
  32 /*
  33  * Authors:
  34  *   Nicolai Haehnle <prefect_@gmx.net>
  35  */
  36
  37 #include "glheader.h"
  38 #include "state.h"
  39 #include "imports.h"
  40 #include "enums.h"
  41 #include "macros.h"
  42 #include "context.h"
  43 #include "dd.h"
  44 #include "simple_list.h"
  45
  46 #include "api_arrayelt.h"
  47 #include "swrast/swrast.h"
  48 #include "swrast_setup/swrast_setup.h"
  49 #include "array_cache/acache.h"
  50 #include "tnl/tnl.h"
  51
  52 #include "radeon_ioctl.h"
  53 #include "radeon_state.h"
  54 #include "r300_context.h"
  55 #include "r300_ioctl.h"
  56 #include "r300_state.h"
  57 #include "r300_reg.h"
  58 #include "r300_program.h"
  59
  60
  61 /**
  62  * Update our tracked culling state based on Mesa's state.
  63  */
  64 static void r300UpdateCulling(GLcontext* ctx)
  65 {
  66         r300ContextPtr r300 = R300_CONTEXT(ctx);
  67         uint32_t val = 0;
  68
  69         R300_STATECHANGE(r300, cul);
  70         if (ctx->Polygon.CullFlag) {
  71                 if (ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK)
  72                         val = R300_CULL_FRONT|R300_CULL_BACK;
  73                 else if (ctx->Polygon.CullFaceMode == GL_FRONT)
  74                         val = R300_CULL_FRONT;
  75                 else
  76                         val = R300_CULL_BACK;
  77
  78                 if (ctx->Polygon.FrontFace == GL_CW)
  79                         val |= R300_FRONT_FACE_CW;
  80                 else
  81                         val |= R300_FRONT_FACE_CCW;
  82         }
  83
  84         r300->hw.cul.cmd[R300_CUL_CULL] = val;
  85 }
  86
  87
  88 /**
  89  * Handle glEnable()/glDisable().
  90  *
  91  * \note Mesa already filters redundant calls to glEnable/glDisable.
  92  */
  93 static void r300Enable(GLcontext* ctx, GLenum cap, GLboolean state)
  94 {
  95         r300ContextPtr r300 = R300_CONTEXT(ctx);
  96         uint32_t newval;
  97
  98         if (RADEON_DEBUG & DEBUG_STATE)
  99                 fprintf(stderr, "%s( %s = %s )\n", __FUNCTION__,
 100                         _mesa_lookup_enum_by_nr(cap),
 101                         state ? "GL_TRUE" : "GL_FALSE");
 102
 103         switch (cap) {
 104         case GL_DEPTH_TEST:
 105                 R300_STATECHANGE(r300, zc);
 106
 107                 if (state) {
 108                         if (ctx->Depth.Mask)
 109                                 newval = R300_RB3D_Z_TEST_AND_WRITE;
 110                         else
 111                                 newval = R300_RB3D_Z_TEST;
 112                 } else
 113                         newval = 0;
 114
 115                 r300->hw.zc.cmd[R300_ZC_CNTL_0] = newval;
 116                 break;
 117
 118         case GL_CULL_FACE:
 119                 r300UpdateCulling(ctx);
 120                 break;
 121
 122         default:
 123                 radeonEnable(ctx, cap, state);
 124                 return;
 125         }
 126 }
 127
 128
 129 /**
 130  * Change the culling mode.
 131  *
 132  * \note Mesa already filters redundant calls to this function.
 133  */
 134 static void r300CullFace(GLcontext* ctx, GLenum mode)
 135 {
 136         (void)mode;
 137
 138         r300UpdateCulling(ctx);
 139 }
 140
 141
 142 /**
 143  * Change the polygon orientation.
 144  *
 145  * \note Mesa already filters redundant calls to this function.
 146  */
 147 static void r300FrontFace(GLcontext* ctx, GLenum mode)
 148 {
 149         (void)mode;
 150
 151         r300UpdateCulling(ctx);
 152 }
 153
 154
 155 /**
 156  * Change the depth testing function.
 157  *
 158  * \note Mesa already filters redundant calls to this function.
 159  */
 160 static void r300DepthFunc(GLcontext* ctx, GLenum func)
 161 {
 162         r300ContextPtr r300 = R300_CONTEXT(ctx);
 163
 164         R300_STATECHANGE(r300, zc);
 165
 166         switch(func) {
 167         case GL_NEVER:
 168                 r300->hw.zc.cmd[R300_ZC_CNTL_1] = R300_Z_TEST_NEVER;
 169                 break;
 170         case GL_LESS:
 171                 r300->hw.zc.cmd[R300_ZC_CNTL_1] = R300_Z_TEST_LESS;
 172                 break;
 173         case GL_EQUAL:
 174                 r300->hw.zc.cmd[R300_ZC_CNTL_1] = R300_Z_TEST_EQUAL;
 175                 break;
 176         case GL_LEQUAL:
 177                 r300->hw.zc.cmd[R300_ZC_CNTL_1] = R300_Z_TEST_LEQUAL;
 178                 break;
 179         case GL_GREATER:
 180                 r300->hw.zc.cmd[R300_ZC_CNTL_1] = R300_Z_TEST_GREATER;
 181                 break;
 182         case GL_NOTEQUAL:
 183                 r300->hw.zc.cmd[R300_ZC_CNTL_1] = R300_Z_TEST_NEQUAL;
 184                 break;
 185         case GL_GEQUAL:
 186                 r300->hw.zc.cmd[R300_ZC_CNTL_1] = R300_Z_TEST_GEQUAL;
 187                 break;
 188         case GL_ALWAYS:
 189                 r300->hw.zc.cmd[R300_ZC_CNTL_1] = R300_Z_TEST_ALWAYS;
 190                 break;
 191         }
 192 }
 193
 194
 195 /**
 196  * Enable/Disable depth writing.
 197  *
 198  * \note Mesa already filters redundant calls to this function.
 199  */
 200 static void r300DepthMask(GLcontext* ctx, GLboolean mask)
 201 {
 202         r300ContextPtr r300 = R300_CONTEXT(ctx);
 203
 204         if (!ctx->Depth.Test)
 205                 return;
 206
 207         R300_STATECHANGE(r300, zc);
 208         r300->hw.zc.cmd[R300_ZC_CNTL_0] = mask
 209                 ? R300_RB3D_Z_TEST_AND_WRITE : R300_RB3D_Z_TEST;
 210 }
 211
 212
 213 /**
 214  * Handle glColorMask()
 215  */
 216 static void r300ColorMask(GLcontext* ctx,
 217                           GLboolean r, GLboolean g, GLboolean b, GLboolean a)
 218 {
 219         r300ContextPtr r300 = R300_CONTEXT(ctx);
 220         int mask = (b << 0) | (g << 1) | (r << 2) | (a << 3);
 221
 222         if (mask != r300->hw.cmk.cmd[R300_CMK_COLORMASK]) {
 223                 R300_STATECHANGE(r300, cmk);
 224                 r300->hw.cmk.cmd[R300_CMK_COLORMASK] = mask;
 225         }
 226 }
 227
 228 /* =============================================================
 229  * Window position and viewport transformation
 230  */
 231
 232 /*
 233  * To correctly position primitives:
 234  */
 235 #define SUBPIXEL_X 0.125
 236 #define SUBPIXEL_Y 0.125
 237
 238 void r300UpdateWindow(GLcontext * ctx)
 239 {
 240         r300ContextPtr rmesa = R300_CONTEXT(ctx);
 241         __DRIdrawablePrivate *dPriv = rmesa->radeon.dri.drawable;
 242         GLfloat xoffset = dPriv ? (GLfloat) dPriv->x : 0;
 243         GLfloat yoffset = dPriv ? (GLfloat) dPriv->y + dPriv->h : 0;
 244         const GLfloat *v = ctx->Viewport._WindowMap.m;
 245
 246         GLfloat sx = v[MAT_SX];
 247         GLfloat tx = v[MAT_TX] + xoffset + SUBPIXEL_X;
 248         GLfloat sy = -v[MAT_SY];
 249         GLfloat ty = (-v[MAT_TY]) + yoffset + SUBPIXEL_Y;
 250         GLfloat sz = v[MAT_SZ] * rmesa->state.depth.scale;
 251         GLfloat tz = v[MAT_TZ] * rmesa->state.depth.scale;
 252
 253         R300_FIREVERTICES(rmesa);
 254         R300_STATECHANGE(rmesa, vpt);
 255
 256         rmesa->hw.vpt.cmd[R300_VPT_XSCALE]  = r300PackFloat32(sx);
 257         rmesa->hw.vpt.cmd[R300_VPT_XOFFSET] = r300PackFloat32(tx);
 258         rmesa->hw.vpt.cmd[R300_VPT_YSCALE]  = r300PackFloat32(sy);
 259         rmesa->hw.vpt.cmd[R300_VPT_YOFFSET] = r300PackFloat32(ty);
 260         rmesa->hw.vpt.cmd[R300_VPT_ZSCALE]  = r300PackFloat32(sz);
 261         rmesa->hw.vpt.cmd[R300_VPT_ZOFFSET] = r300PackFloat32(tz);
 262 }
 263
 264 static void r300Viewport(GLcontext * ctx, GLint x, GLint y,
 265                          GLsizei width, GLsizei height)
 266 {
 267         /* Don't pipeline viewport changes, conflict with window offset
 268          * setting below.  Could apply deltas to rescue pipelined viewport
 269          * values, or keep the originals hanging around.
 270          */
 271         R200_FIREVERTICES(R200_CONTEXT(ctx));
 272         r300UpdateWindow(ctx);
 273 }
 274
 275 static void r300DepthRange(GLcontext * ctx, GLclampd nearval, GLclampd farval)
 276 {
 277         r300UpdateWindow(ctx);
 278 }
 279
 280
 281 /**
 282  * Called by Mesa after an internal state update.
 283  */
 284 static void r300InvalidateState(GLcontext * ctx, GLuint new_state)
 285 {
 286         r300ContextPtr r300 = R300_CONTEXT(ctx);
 287
 288         _swrast_InvalidateState(ctx, new_state);
 289         _swsetup_InvalidateState(ctx, new_state);
 290         _ac_InvalidateState(ctx, new_state);
 291         _tnl_InvalidateState(ctx, new_state);
 292         _ae_invalidate_state(ctx, new_state);
 293
 294         /* Go inefficiency! */
 295         r300ResetHwState(r300);
 296 }
 297
 298
 299 /**
 300  * Completely recalculates hardware state based on the Mesa state.
 301  */
 302 void r300ResetHwState(r300ContextPtr r300)
 303 {
 304         GLcontext* ctx = r300->radeon.glCtx;
 305         int i;
 306
 307         if (RADEON_DEBUG & DEBUG_STATE)
 308                 fprintf(stderr, "%s\n", __FUNCTION__);
 309
 310         r300UpdateWindow(ctx);
 311
 312         r300ColorMask(ctx,
 313                 ctx->Color.ColorMask[RCOMP],
 314                 ctx->Color.ColorMask[GCOMP],
 315                 ctx->Color.ColorMask[BCOMP],
 316                 ctx->Color.ColorMask[ACOMP]);
 317
 318         r300Enable(ctx, GL_DEPTH_TEST, ctx->Depth.Test);
 319         r300DepthMask(ctx, ctx->Depth.Mask);
 320         r300DepthFunc(ctx, ctx->Depth.Func);
 321
 322         r300UpdateCulling(ctx);
 323
 324 //BEGIN: TODO
 325         r300->hw.unk2080.cmd[1] = 0x0030045A;
 326
 327         r300->hw.ovf.cmd[R300_OVF_FMT_0] = 0x00000003;
 328         r300->hw.ovf.cmd[R300_OVF_FMT_1] = 0x00000000;
 329
 330         r300->hw.vte.cmd[1] = R300_VPORT_X_SCALE_ENA
 331                                 | R300_VPORT_X_OFFSET_ENA
 332                                 | R300_VPORT_Y_SCALE_ENA
 333                                 | R300_VPORT_Y_OFFSET_ENA
 334                                 | R300_VPORT_Z_SCALE_ENA
 335                                 | R300_VPORT_Z_OFFSET_ENA
 336                                 | R300_VTX_W0_FMT;
 337         r300->hw.vte.cmd[2] = 0x00000008;
 338
 339         r300->hw.unk2134.cmd[1] = 0x00FFFFFF;
 340         r300->hw.unk2134.cmd[2] = 0x00000000;
 341
 342         r300->hw.unk2140.cmd[1] = 0x00000000;
 343
 344         ((drm_r300_cmd_header_t*)r300->hw.vir[0].cmd)->unchecked_state.count = 1;
 345         r300->hw.vir[0].cmd[1] = 0x21030003;
 346
 347         ((drm_r300_cmd_header_t*)r300->hw.vir[1].cmd)->unchecked_state.count = 1;
 348         r300->hw.vir[1].cmd[1] = 0xF688F688;
 349
 350         r300->hw.vic.cmd[R300_VIR_CNTL_0] = 0x00000001;
 351         r300->hw.vic.cmd[R300_VIR_CNTL_1] = 0x00000405;
 352
 353         r300->hw.unk21DC.cmd[1] = 0xAAAAAAAA;
 354
 355         r300->hw.unk221C.cmd[1] = R300_221C_NORMAL;
 356
 357         r300->hw.unk2220.cmd[1] = r300PackFloat32(1.0);
 358         r300->hw.unk2220.cmd[2] = r300PackFloat32(1.0);
 359         r300->hw.unk2220.cmd[3] = r300PackFloat32(1.0);
 360         r300->hw.unk2220.cmd[4] = r300PackFloat32(1.0);
 361
 362         if (GET_CHIP(r300->radeon.radeonScreen) == RADEON_CHIP_R300)
 363                 r300->hw.unk2288.cmd[1] = R300_2288_R300;
 364         else
 365                 r300->hw.unk2288.cmd[1] = R300_2288_RV350;
 366
 367         r300->hw.vof.cmd[R300_VOF_CNTL_0] = R300_VAP_OUTPUT_VTX_FMT_0__POS_PRESENT
 368                                 | R300_VAP_OUTPUT_VTX_FMT_0__COLOR_PRESENT;
 369         r300->hw.vof.cmd[R300_VOF_CNTL_1] = 0; /* no textures */
 370
 371         r300->hw.pvs.cmd[R300_PVS_CNTL_1] = 0;
 372         r300->hw.pvs.cmd[R300_PVS_CNTL_2] = 0;
 373         r300->hw.pvs.cmd[R300_PVS_CNTL_3] = 0;
 374
 375         r300->hw.gb_enable.cmd[1] = R300_GB_POINT_STUFF_ENABLE
 376                 | R300_GB_LINE_STUFF_ENABLE
 377                 | R300_GB_TRIANGLE_STUFF_ENABLE;
 378
 379         r300->hw.gb_misc.cmd[R300_GB_MISC_MSPOS_0] = 0x66666666;
 380         r300->hw.gb_misc.cmd[R300_GB_MISC_MSPOS_1] = 0x06666666;
 381         if (GET_CHIP(r300->radeon.radeonScreen) == RADEON_CHIP_R300)
 382                 r300->hw.gb_misc.cmd[R300_GB_MISC_TILE_CONFIG] = R300_GB_TILE_ENABLE
 383                                                         | R300_GB_TILE_PIPE_COUNT_R300
 384                                                         | R300_GB_TILE_SIZE_16;
 385         else
 386                 r300->hw.gb_misc.cmd[R300_GB_MISC_TILE_CONFIG] = R300_GB_TILE_ENABLE
 387                                                         | R300_GB_TILE_PIPE_COUNT_RV300
 388                                                         | R300_GB_TILE_SIZE_16;
 389         r300->hw.gb_misc.cmd[R300_GB_MISC_SELECT] = 0x00000000;
 390         r300->hw.gb_misc.cmd[R300_GB_MISC_AA_CONFIG] = 0x00000000; /* No antialiasing */
 391
 392         r300->hw.txe.cmd[R300_TXE_ENABLE] = 0;
 393
 394         r300->hw.unk4200.cmd[1] = r300PackFloat32(0.0);
 395         r300->hw.unk4200.cmd[2] = r300PackFloat32(0.0);
 396         r300->hw.unk4200.cmd[3] = r300PackFloat32(1.0);
 397         r300->hw.unk4200.cmd[4] = r300PackFloat32(1.0);
 398
 399         r300->hw.unk4214.cmd[1] = 0x00050005;
 400
 401         r300->hw.ps.cmd[R300_PS_POINTSIZE] = (6 << R300_POINTSIZE_X_SHIFT) |
 402                                              (6 << R300_POINTSIZE_Y_SHIFT);
 403
 404         r300->hw.unk4230.cmd[1] = 0x01800000;
 405         r300->hw.unk4230.cmd[2] = 0x00020006;
 406         r300->hw.unk4230.cmd[3] = r300PackFloat32(1.0 / 192.0);
 407
 408         r300->hw.unk4260.cmd[1] = 0;
 409         r300->hw.unk4260.cmd[2] = r300PackFloat32(0.0);
 410         r300->hw.unk4260.cmd[3] = r300PackFloat32(1.0);
 411
 412         r300->hw.unk4274.cmd[1] = 0x00000002;
 413         r300->hw.unk4274.cmd[2] = 0x0003AAAA;
 414         r300->hw.unk4274.cmd[3] = 0x00000000;
 415         r300->hw.unk4274.cmd[4] = 0x00000000;
 416
 417         r300->hw.unk4288.cmd[1] = 0x00000000;
 418         r300->hw.unk4288.cmd[2] = 0x00000001;
 419         r300->hw.unk4288.cmd[3] = 0x00000000;
 420         r300->hw.unk4288.cmd[4] = 0x00000000;
 421         r300->hw.unk4288.cmd[5] = 0x00000000;
 422
 423         r300->hw.unk42A0.cmd[1] = 0x00000000;
 424
 425         r300->hw.unk42B4.cmd[1] = 0x00000000;
 426
 427         r300->hw.unk42C0.cmd[1] = 0x4B7FFFFF;
 428         r300->hw.unk42C0.cmd[2] = 0x00000000;
 429
 430         /* The second constant is needed to get glxgears display anything .. */
 431         r300->hw.rc.cmd[1] = R300_RS_CNTL_0_UNKNOWN_7 | R300_RS_CNTL_0_UNKNOWN_18;
 432         r300->hw.rc.cmd[2] = 0;
 433
 434         for(i = 1; i <= 8; ++i)
 435                 r300->hw.ri.cmd[i] = 0x00d10000;
 436         r300->hw.ri.cmd[R300_RI_INTERP_1] |= R300_RS_INTERP_1_UNKNOWN;
 437         r300->hw.ri.cmd[R300_RI_INTERP_2] |= R300_RS_INTERP_2_UNKNOWN;
 438         r300->hw.ri.cmd[R300_RI_INTERP_3] |= R300_RS_INTERP_3_UNKNOWN;
 439
 440         ((drm_r300_cmd_header_t*)r300->hw.rr.cmd)->unchecked_state.count = 1;
 441         for(i = 1; i <= 8; ++i)
 442                 r300->hw.rr.cmd[i] = 0;
 443         r300->hw.rr.cmd[R300_RR_ROUTE_0] = 0x4000;
 444
 445         r300->hw.unk43A4.cmd[1] = 0x0000001C;
 446         r300->hw.unk43A4.cmd[2] = 0x2DA49525;
 447
 448         r300->hw.unk43E8.cmd[1] = 0x00FFFFFF;
 449
 450         r300->hw.fp.cmd[R300_FP_CNTL0] = 0;
 451         r300->hw.fp.cmd[R300_FP_CNTL1] = 0;
 452         r300->hw.fp.cmd[R300_FP_CNTL2] = 0;
 453         r300->hw.fp.cmd[R300_FP_NODE0] = 0;
 454         r300->hw.fp.cmd[R300_FP_NODE1] = 0;
 455         r300->hw.fp.cmd[R300_FP_NODE2] = 0;
 456         r300->hw.fp.cmd[R300_FP_NODE3] = 0;
 457
 458         r300->hw.unk46A4.cmd[1] = 0x00001B01;
 459         r300->hw.unk46A4.cmd[2] = 0x00001B0F;
 460         r300->hw.unk46A4.cmd[3] = 0x00001B0F;
 461         r300->hw.unk46A4.cmd[4] = 0x00001B0F;
 462         r300->hw.unk46A4.cmd[5] = 0x00000001;
 463
 464         for(i = 1; i <= 64; ++i) {
 465                 /* create NOP instructions */
 466                 r300->hw.fpi[0].cmd[i] = FP_INSTRC(MAD, FP_ARGC(SRC0C_XYZ), FP_ARGC(ONE), FP_ARGC(ZERO));
 467                 r300->hw.fpi[1].cmd[i] = FP_SELC(0,XYZ,NO,FP_TMP(0),0,0);
 468                 r300->hw.fpi[2].cmd[i] = FP_INSTRA(MAD, FP_ARGA(SRC0A), FP_ARGA(ONE), FP_ARGA(ZERO));
 469                 r300->hw.fpi[3].cmd[i] = FP_SELA(0,W,NO,FP_TMP(0),0,0);
 470         }
 471
 472         r300->hw.unk4BC0.cmd[1] = 0;
 473
 474         r300->hw.unk4BC8.cmd[1] = 0;
 475         r300->hw.unk4BC8.cmd[2] = 0;
 476         r300->hw.unk4BC8.cmd[3] = 0;
 477
 478         r300->hw.at.cmd[R300_AT_ALPHA_TEST] = 0;
 479
 480         r300->hw.unk4BD8.cmd[1] = 0;
 481
 482         r300->hw.unk4E00.cmd[1] = 0;
 483
 484         r300->hw.bld.cmd[R300_BLD_CBLEND] = 0;
 485         r300->hw.bld.cmd[R300_BLD_ABLEND] = 0;
 486
 487         r300->hw.unk4E10.cmd[1] = 0;
 488         r300->hw.unk4E10.cmd[2] = 0;
 489         r300->hw.unk4E10.cmd[3] = 0;
 490
 491         r300->hw.cb.cmd[R300_CB_OFFSET] =
 492                 r300->radeon.radeonScreen->backOffset +
 493                 r300->radeon.radeonScreen->fbLocation;
 494         r300->hw.cb.cmd[R300_CB_PITCH] = r300->radeon.radeonScreen->backPitch
 495                 | R300_COLOR_UNKNOWN_22_23;
 496
 497         r300->hw.unk4E50.cmd[1] = 0;
 498         r300->hw.unk4E50.cmd[2] = 0;
 499         r300->hw.unk4E50.cmd[3] = 0;
 500         r300->hw.unk4E50.cmd[4] = 0;
 501         r300->hw.unk4E50.cmd[5] = 0;
 502         r300->hw.unk4E50.cmd[6] = 0;
 503         r300->hw.unk4E50.cmd[7] = 0;
 504         r300->hw.unk4E50.cmd[8] = 0;
 505         r300->hw.unk4E50.cmd[9] = 0;
 506
 507         r300->hw.unk4E88.cmd[1] = 0;
 508
 509         r300->hw.unk4EA0.cmd[1] = 0x00000000;
 510         r300->hw.unk4EA0.cmd[2] = 0xffffffff;
 511
 512         r300->hw.unk4F08.cmd[1] = 0x00FFFF00;
 513
 514         r300->hw.unk4F10.cmd[1] = 0x00000002; // depthbuffer format?
 515         r300->hw.unk4F10.cmd[2] = 0x00000000;
 516         r300->hw.unk4F10.cmd[3] = 0x00000003;
 517         r300->hw.unk4F10.cmd[4] = 0x00000000;
 518
 519         r300->hw.zb.cmd[R300_ZB_OFFSET] =
 520                 r300->radeon.radeonScreen->depthOffset +
 521                 r300->radeon.radeonScreen->fbLocation;
 522         r300->hw.zb.cmd[R300_ZB_PITCH] = r300->radeon.radeonScreen->depthPitch;
 523
 524         r300->hw.unk4F28.cmd[1] = 0;
 525
 526         r300->hw.unk4F30.cmd[1] = 0;
 527         r300->hw.unk4F30.cmd[2] = 0;
 528
 529         r300->hw.unk4F44.cmd[1] = 0;
 530
 531         r300->hw.unk4F54.cmd[1] = 0;
 532
 533         ((drm_r300_cmd_header_t*)r300->hw.vpi.cmd)->vpu.count = 0;
 534         for(i = 1; i < R300_VPI_CMDSIZE; i += 4) {
 535                 /* MOV t0, t0 */
 536                 r300->hw.vpi.cmd[i+0] = VP_OUT(ADD,TMP,0,XYZW);
 537                 r300->hw.vpi.cmd[i+1] = VP_IN(TMP,0);
 538                 r300->hw.vpi.cmd[i+2] = VP_ZERO();
 539                 r300->hw.vpi.cmd[i+3] = VP_ZERO();
 540         }
 541
 542         ((drm_r300_cmd_header_t*)r300->hw.vpp.cmd)->vpu.count = 0;
 543         for(i = 1; i < R300_VPP_CMDSIZE; ++i)
 544                 r300->hw.vpp.cmd[i] = 0;
 545
 546         r300->hw.vps.cmd[R300_VPS_ZERO_0] = 0;
 547         r300->hw.vps.cmd[R300_VPS_ZERO_1] = 0;
 548         r300->hw.vps.cmd[R300_VPS_POINTSIZE] = r300PackFloat32(1.0);
 549         r300->hw.vps.cmd[R300_VPS_ZERO_3] = 0;
 550 //END: TODO
 551
 552         r300->hw.all_dirty = GL_TRUE;
 553 }
 554
 555
 556
 557 /**
 558  * Calculate initial hardware state and register state functions.
 559  * Assumes that the command buffer and state atoms have been
 560  * initialized already.
 561  */
 562 void r300InitState(r300ContextPtr r300)
 563 {
 564         radeonInitState(&r300->radeon);
 565
 566         r300->state.depth.scale = 1.0 / (GLfloat) 0xffff;
 567
 568         r300ResetHwState(r300);
 569 }
 570
 571
 572
 573 /**
 574  * Initialize driver's state callback functions
 575  */
 576 void r300InitStateFuncs(struct dd_function_table* functions)
 577 {
 578         radeonInitStateFuncs(functions);
 579
 580         functions->UpdateState = r300InvalidateState;
 581         functions->Enable = r300Enable;
 582         functions->ColorMask = r300ColorMask;
 583         functions->DepthFunc = r300DepthFunc;
 584         functions->DepthMask = r300DepthMask;
 585         functions->CullFace = r300CullFace;
 586         functions->FrontFace = r300FrontFace;
 587
 588         /* Viewport related */
 589         functions->Viewport = r300Viewport;
 590         functions->DepthRange = r300DepthRange;
 591 }
 592