src/gallium/drivers/r600/r600_state_common.c

   1 /*
   2  * Copyright 2010 Red Hat Inc.
   3  *           2010 Jerome Glisse
   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  * on the rights to use, copy, modify, merge, publish, distribute, sub
   9  * license, and/or sell copies of the Software, and to permit persons to whom
  10  * the Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  22  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors: Dave Airlie <airlied@redhat.com>
  25  *          Jerome Glisse <jglisse@redhat.com>
  26  */
  27 #include "r600_formats.h"
  28 #include "r600d.h"
  29
  30 #include "util/u_blitter.h"
  31 #include "util/u_upload_mgr.h"
  32 #include "tgsi/tgsi_parse.h"
  33 #include <byteswap.h>
  34
  35 static void r600_emit_command_buffer(struct r600_context *rctx, struct r600_atom *atom)
  36 {
  37         struct radeon_winsys_cs *cs = rctx->cs;
  38         struct r600_command_buffer *cb = (struct r600_command_buffer*)atom;
  39
  40         assert(cs->cdw + cb->atom.num_dw <= RADEON_MAX_CMDBUF_DWORDS);
  41         memcpy(cs->buf + cs->cdw, cb->buf, 4 * cb->atom.num_dw);
  42         cs->cdw += cb->atom.num_dw;
  43 }
  44
  45 void r600_init_command_buffer(struct r600_command_buffer *cb, unsigned num_dw, enum r600_atom_flags flags)
  46 {
  47         cb->atom.emit = r600_emit_command_buffer;
  48         cb->atom.num_dw = 0;
  49         cb->atom.flags = flags;
  50         cb->buf = CALLOC(1, 4 * num_dw);
  51         cb->max_num_dw = num_dw;
  52 }
  53
  54 void r600_release_command_buffer(struct r600_command_buffer *cb)
  55 {
  56         FREE(cb->buf);
  57 }
  58
  59 static void r600_emit_surface_sync(struct r600_context *rctx, struct r600_atom *atom)
  60 {
  61         struct radeon_winsys_cs *cs = rctx->cs;
  62         struct r600_surface_sync_cmd *a = (struct r600_surface_sync_cmd*)atom;
  63
  64         cs->buf[cs->cdw++] = PKT3(PKT3_SURFACE_SYNC, 3, 0);
  65         cs->buf[cs->cdw++] = a->flush_flags;  /* CP_COHER_CNTL */
  66         cs->buf[cs->cdw++] = 0xffffffff;      /* CP_COHER_SIZE */
  67         cs->buf[cs->cdw++] = 0;               /* CP_COHER_BASE */
  68         cs->buf[cs->cdw++] = 0x0000000A;      /* POLL_INTERVAL */
  69
  70         a->flush_flags = 0;
  71 }
  72
  73 static void r600_emit_r6xx_flush_and_inv(struct r600_context *rctx, struct r600_atom *atom)
  74 {
  75         struct radeon_winsys_cs *cs = rctx->cs;
  76         cs->buf[cs->cdw++] = PKT3(PKT3_EVENT_WRITE, 0, 0);
  77         cs->buf[cs->cdw++] = EVENT_TYPE(EVENT_TYPE_CACHE_FLUSH_AND_INV_EVENT) | EVENT_INDEX(0);
  78 }
  79
  80 void r600_init_atom(struct r600_atom *atom,
  81                     void (*emit)(struct r600_context *ctx, struct r600_atom *state),
  82                     unsigned num_dw, enum r600_atom_flags flags)
  83 {
  84         atom->emit = emit;
  85         atom->num_dw = num_dw;
  86         atom->flags = flags;
  87 }
  88
  89 void r600_init_common_atoms(struct r600_context *rctx)
  90 {
  91         r600_init_atom(&rctx->surface_sync_cmd.atom,    r600_emit_surface_sync,         5, EMIT_EARLY);
  92         r600_init_atom(&rctx->r6xx_flush_and_inv_cmd,   r600_emit_r6xx_flush_and_inv,   2, EMIT_EARLY);
  93 }
  94
  95 unsigned r600_get_cb_flush_flags(struct r600_context *rctx)
  96 {
  97         unsigned flags = 0;
  98
  99         if (rctx->framebuffer.nr_cbufs) {
 100                 flags |= S_0085F0_CB_ACTION_ENA(1) |
 101                          (((1 << rctx->framebuffer.nr_cbufs) - 1) << S_0085F0_CB0_DEST_BASE_ENA_SHIFT);
 102         }
 103
 104         /* Workaround for broken flushing on some R6xx chipsets. */
 105         if (rctx->family == CHIP_RV670 ||
 106             rctx->family == CHIP_RS780 ||
 107             rctx->family == CHIP_RS880) {
 108                 flags |=  S_0085F0_CB1_DEST_BASE_ENA(1) |
 109                           S_0085F0_DEST_BASE_0_ENA(1);
 110         }
 111         return flags;
 112 }
 113
 114 void r600_texture_barrier(struct pipe_context *ctx)
 115 {
 116         struct r600_context *rctx = (struct r600_context *)ctx;
 117
 118         rctx->surface_sync_cmd.flush_flags |= S_0085F0_TC_ACTION_ENA(1) | r600_get_cb_flush_flags(rctx);
 119         r600_atom_dirty(rctx, &rctx->surface_sync_cmd.atom);
 120 }
 121
 122 static bool r600_conv_pipe_prim(unsigned pprim, unsigned *prim)
 123 {
 124         static const int prim_conv[] = {
 125                 V_008958_DI_PT_POINTLIST,
 126                 V_008958_DI_PT_LINELIST,
 127                 V_008958_DI_PT_LINELOOP,
 128                 V_008958_DI_PT_LINESTRIP,
 129                 V_008958_DI_PT_TRILIST,
 130                 V_008958_DI_PT_TRISTRIP,
 131                 V_008958_DI_PT_TRIFAN,
 132                 V_008958_DI_PT_QUADLIST,
 133                 V_008958_DI_PT_QUADSTRIP,
 134                 V_008958_DI_PT_POLYGON,
 135                 -1,
 136                 -1,
 137                 -1,
 138                 -1
 139         };
 140
 141         *prim = prim_conv[pprim];
 142         if (*prim == -1) {
 143                 fprintf(stderr, "%s:%d unsupported %d\n", __func__, __LINE__, pprim);
 144                 return false;
 145         }
 146         return true;
 147 }
 148
 149 /* common state between evergreen and r600 */
 150 void r600_bind_blend_state(struct pipe_context *ctx, void *state)
 151 {
 152         struct r600_context *rctx = (struct r600_context *)ctx;
 153         struct r600_pipe_blend *blend = (struct r600_pipe_blend *)state;
 154         struct r600_pipe_state *rstate;
 155
 156         if (state == NULL)
 157                 return;
 158         rstate = &blend->rstate;
 159         rctx->states[rstate->id] = rstate;
 160         rctx->cb_target_mask = blend->cb_target_mask;
 161         /* Replace every bit except MULTIWRITE_ENABLE. */
 162         rctx->cb_color_control &= ~C_028808_MULTIWRITE_ENABLE;
 163         rctx->cb_color_control |= blend->cb_color_control & C_028808_MULTIWRITE_ENABLE;
 164         rctx->dual_src_blend = blend->dual_src_blend;
 165         r600_context_pipe_state_set(rctx, rstate);
 166 }
 167
 168 void r600_set_blend_color(struct pipe_context *ctx,
 169                           const struct pipe_blend_color *state)
 170 {
 171         struct r600_context *rctx = (struct r600_context *)ctx;
 172         struct r600_pipe_state *rstate = CALLOC_STRUCT(r600_pipe_state);
 173
 174         if (rstate == NULL)
 175                 return;
 176
 177         rstate->id = R600_PIPE_STATE_BLEND_COLOR;
 178         r600_pipe_state_add_reg(rstate, R_028414_CB_BLEND_RED, fui(state->color[0]));
 179         r600_pipe_state_add_reg(rstate, R_028418_CB_BLEND_GREEN, fui(state->color[1]));
 180         r600_pipe_state_add_reg(rstate, R_02841C_CB_BLEND_BLUE, fui(state->color[2]));
 181         r600_pipe_state_add_reg(rstate, R_028420_CB_BLEND_ALPHA, fui(state->color[3]));
 182
 183         free(rctx->states[R600_PIPE_STATE_BLEND_COLOR]);
 184         rctx->states[R600_PIPE_STATE_BLEND_COLOR] = rstate;
 185         r600_context_pipe_state_set(rctx, rstate);
 186 }
 187
 188 static void r600_set_stencil_ref(struct pipe_context *ctx,
 189                                  const struct r600_stencil_ref *state)
 190 {
 191         struct r600_context *rctx = (struct r600_context *)ctx;
 192         struct r600_pipe_state *rstate = CALLOC_STRUCT(r600_pipe_state);
 193
 194         if (rstate == NULL)
 195                 return;
 196
 197         rstate->id = R600_PIPE_STATE_STENCIL_REF;
 198         r600_pipe_state_add_reg(rstate,
 199                                 R_028430_DB_STENCILREFMASK,
 200                                 S_028430_STENCILREF(state->ref_value[0]) |
 201                                 S_028430_STENCILMASK(state->valuemask[0]) |
 202                                 S_028430_STENCILWRITEMASK(state->writemask[0]));
 203         r600_pipe_state_add_reg(rstate,
 204                                 R_028434_DB_STENCILREFMASK_BF,
 205                                 S_028434_STENCILREF_BF(state->ref_value[1]) |
 206                                 S_028434_STENCILMASK_BF(state->valuemask[1]) |
 207                                 S_028434_STENCILWRITEMASK_BF(state->writemask[1]));
 208
 209         free(rctx->states[R600_PIPE_STATE_STENCIL_REF]);
 210         rctx->states[R600_PIPE_STATE_STENCIL_REF] = rstate;
 211         r600_context_pipe_state_set(rctx, rstate);
 212 }
 213
 214 void r600_set_pipe_stencil_ref(struct pipe_context *ctx,
 215                                const struct pipe_stencil_ref *state)
 216 {
 217         struct r600_context *rctx = (struct r600_context *)ctx;
 218         struct r600_pipe_dsa *dsa = (struct r600_pipe_dsa*)rctx->states[R600_PIPE_STATE_DSA];
 219         struct r600_stencil_ref ref;
 220
 221         rctx->stencil_ref = *state;
 222
 223         if (!dsa)
 224                 return;
 225
 226         ref.ref_value[0] = state->ref_value[0];
 227         ref.ref_value[1] = state->ref_value[1];
 228         ref.valuemask[0] = dsa->valuemask[0];
 229         ref.valuemask[1] = dsa->valuemask[1];
 230         ref.writemask[0] = dsa->writemask[0];
 231         ref.writemask[1] = dsa->writemask[1];
 232
 233         r600_set_stencil_ref(ctx, &ref);
 234 }
 235
 236 void r600_bind_dsa_state(struct pipe_context *ctx, void *state)
 237 {
 238         struct r600_context *rctx = (struct r600_context *)ctx;
 239         struct r600_pipe_dsa *dsa = state;
 240         struct r600_pipe_state *rstate;
 241         struct r600_stencil_ref ref;
 242
 243         if (state == NULL)
 244                 return;
 245         rstate = &dsa->rstate;
 246         rctx->states[rstate->id] = rstate;
 247         rctx->alpha_ref = dsa->alpha_ref;
 248         rctx->alpha_ref_dirty = true;
 249         r600_context_pipe_state_set(rctx, rstate);
 250
 251         ref.ref_value[0] = rctx->stencil_ref.ref_value[0];
 252         ref.ref_value[1] = rctx->stencil_ref.ref_value[1];
 253         ref.valuemask[0] = dsa->valuemask[0];
 254         ref.valuemask[1] = dsa->valuemask[1];
 255         ref.writemask[0] = dsa->writemask[0];
 256         ref.writemask[1] = dsa->writemask[1];
 257
 258         r600_set_stencil_ref(ctx, &ref);
 259
 260         if (rctx->db_misc_state.flush_depthstencil_enabled != dsa->is_flush) {
 261                 rctx->db_misc_state.flush_depthstencil_enabled = dsa->is_flush;
 262                 r600_atom_dirty(rctx, &rctx->db_misc_state.atom);
 263         }
 264 }
 265
 266 void r600_set_max_scissor(struct r600_context *rctx)
 267 {
 268         /* Set a scissor state such that it doesn't do anything. */
 269         struct pipe_scissor_state scissor;
 270         scissor.minx = 0;
 271         scissor.miny = 0;
 272         scissor.maxx = 8192;
 273         scissor.maxy = 8192;
 274
 275         r600_set_scissor_state(rctx, &scissor);
 276 }
 277
 278 void r600_bind_rs_state(struct pipe_context *ctx, void *state)
 279 {
 280         struct r600_pipe_rasterizer *rs = (struct r600_pipe_rasterizer *)state;
 281         struct r600_context *rctx = (struct r600_context *)ctx;
 282
 283         if (state == NULL)
 284                 return;
 285
 286         rctx->sprite_coord_enable = rs->sprite_coord_enable;
 287         rctx->two_side = rs->two_side;
 288         rctx->pa_sc_line_stipple = rs->pa_sc_line_stipple;
 289         rctx->pa_cl_clip_cntl = rs->pa_cl_clip_cntl;
 290
 291         rctx->rasterizer = rs;
 292
 293         rctx->states[rs->rstate.id] = &rs->rstate;
 294         r600_context_pipe_state_set(rctx, &rs->rstate);
 295
 296         if (rctx->chip_class >= EVERGREEN) {
 297                 evergreen_polygon_offset_update(rctx);
 298         } else {
 299                 r600_polygon_offset_update(rctx);
 300         }
 301
 302         /* Workaround for a missing scissor enable on r600. */
 303         if (rctx->chip_class == R600) {
 304                 if (rs->scissor_enable != rctx->scissor_enable) {
 305                         rctx->scissor_enable = rs->scissor_enable;
 306
 307                         if (rs->scissor_enable) {
 308                                 r600_set_scissor_state(rctx, &rctx->scissor_state);
 309                         } else {
 310                                 r600_set_max_scissor(rctx);
 311                         }
 312                 }
 313         }
 314 }
 315
 316 void r600_delete_rs_state(struct pipe_context *ctx, void *state)
 317 {
 318         struct r600_context *rctx = (struct r600_context *)ctx;
 319         struct r600_pipe_rasterizer *rs = (struct r600_pipe_rasterizer *)state;
 320
 321         if (rctx->rasterizer == rs) {
 322                 rctx->rasterizer = NULL;
 323         }
 324         if (rctx->states[rs->rstate.id] == &rs->rstate) {
 325                 rctx->states[rs->rstate.id] = NULL;
 326         }
 327         free(rs);
 328 }
 329
 330 void r600_sampler_view_destroy(struct pipe_context *ctx,
 331                                struct pipe_sampler_view *state)
 332 {
 333         struct r600_pipe_sampler_view *resource = (struct r600_pipe_sampler_view *)state;
 334
 335         pipe_resource_reference(&state->texture, NULL);
 336         FREE(resource);
 337 }
 338
 339 void r600_delete_state(struct pipe_context *ctx, void *state)
 340 {
 341         struct r600_context *rctx = (struct r600_context *)ctx;
 342         struct r600_pipe_state *rstate = (struct r600_pipe_state *)state;
 343
 344         if (rctx->states[rstate->id] == rstate) {
 345                 rctx->states[rstate->id] = NULL;
 346         }
 347         for (int i = 0; i < rstate->nregs; i++) {
 348                 pipe_resource_reference((struct pipe_resource**)&rstate->regs[i].bo, NULL);
 349         }
 350         free(rstate);
 351 }
 352
 353 void r600_bind_vertex_elements(struct pipe_context *ctx, void *state)
 354 {
 355         struct r600_context *rctx = (struct r600_context *)ctx;
 356         struct r600_vertex_element *v = (struct r600_vertex_element*)state;
 357
 358         rctx->vertex_elements = v;
 359         if (v) {
 360                 r600_inval_shader_cache(rctx);
 361
 362                 rctx->states[v->rstate.id] = &v->rstate;
 363                 r600_context_pipe_state_set(rctx, &v->rstate);
 364         }
 365 }
 366
 367 void r600_delete_vertex_element(struct pipe_context *ctx, void *state)
 368 {
 369         struct r600_context *rctx = (struct r600_context *)ctx;
 370         struct r600_vertex_element *v = (struct r600_vertex_element*)state;
 371
 372         if (rctx->states[v->rstate.id] == &v->rstate) {
 373                 rctx->states[v->rstate.id] = NULL;
 374         }
 375         if (rctx->vertex_elements == state)
 376                 rctx->vertex_elements = NULL;
 377
 378         pipe_resource_reference((struct pipe_resource**)&v->fetch_shader, NULL);
 379         FREE(state);
 380 }
 381
 382 void r600_set_index_buffer(struct pipe_context *ctx,
 383                            const struct pipe_index_buffer *ib)
 384 {
 385         struct r600_context *rctx = (struct r600_context *)ctx;
 386
 387         if (ib) {
 388                 pipe_resource_reference(&rctx->index_buffer.buffer, ib->buffer);
 389                 memcpy(&rctx->index_buffer, ib, sizeof(*ib));
 390         } else {
 391                 pipe_resource_reference(&rctx->index_buffer.buffer, NULL);
 392         }
 393 }
 394
 395 void r600_set_vertex_buffers(struct pipe_context *ctx, unsigned count,
 396                              const struct pipe_vertex_buffer *buffers)
 397 {
 398         struct r600_context *rctx = (struct r600_context *)ctx;
 399
 400         util_copy_vertex_buffers(rctx->vertex_buffer, &rctx->nr_vertex_buffers, buffers, count);
 401         rctx->vertex_buffers_dirty = true;
 402 }
 403
 404 void *r600_create_vertex_elements(struct pipe_context *ctx,
 405                                   unsigned count,
 406                                   const struct pipe_vertex_element *elements)
 407 {
 408         struct r600_context *rctx = (struct r600_context *)ctx;
 409         struct r600_vertex_element *v = CALLOC_STRUCT(r600_vertex_element);
 410
 411         assert(count < 32);
 412         if (!v)
 413                 return NULL;
 414
 415         v->count = count;
 416         memcpy(v->elements, elements, sizeof(struct pipe_vertex_element) * count);
 417
 418         if (r600_vertex_elements_build_fetch_shader(rctx, v)) {
 419                 FREE(v);
 420                 return NULL;
 421         }
 422
 423         return v;
 424 }
 425
 426 void *r600_create_shader_state(struct pipe_context *ctx,
 427                                const struct pipe_shader_state *state)
 428 {
 429         struct r600_pipe_shader *shader = CALLOC_STRUCT(r600_pipe_shader);
 430         int r;
 431
 432         shader->tokens = tgsi_dup_tokens(state->tokens);
 433         shader->so = state->stream_output;
 434
 435         r =  r600_pipe_shader_create(ctx, shader);
 436         if (r) {
 437                 return NULL;
 438         }
 439         return shader;
 440 }
 441
 442 void r600_bind_ps_shader(struct pipe_context *ctx, void *state)
 443 {
 444         struct r600_context *rctx = (struct r600_context *)ctx;
 445
 446         if (!state) {
 447                 state = rctx->dummy_pixel_shader;
 448         }
 449
 450         rctx->ps_shader = (struct r600_pipe_shader *)state;
 451
 452         r600_inval_shader_cache(rctx);
 453         r600_context_pipe_state_set(rctx, &rctx->ps_shader->rstate);
 454
 455         rctx->cb_color_control &= C_028808_MULTIWRITE_ENABLE;
 456         rctx->cb_color_control |= S_028808_MULTIWRITE_ENABLE(!!rctx->ps_shader->shader.fs_write_all);
 457
 458         if (rctx->ps_shader && rctx->vs_shader) {
 459                 r600_adjust_gprs(rctx);
 460         }
 461 }
 462
 463 void r600_bind_vs_shader(struct pipe_context *ctx, void *state)
 464 {
 465         struct r600_context *rctx = (struct r600_context *)ctx;
 466
 467         rctx->vs_shader = (struct r600_pipe_shader *)state;
 468         if (state) {
 469                 r600_inval_shader_cache(rctx);
 470                 r600_context_pipe_state_set(rctx, &rctx->vs_shader->rstate);
 471         }
 472         if (rctx->ps_shader && rctx->vs_shader) {
 473                 r600_adjust_gprs(rctx);
 474         }
 475 }
 476
 477 void r600_delete_ps_shader(struct pipe_context *ctx, void *state)
 478 {
 479         struct r600_context *rctx = (struct r600_context *)ctx;
 480         struct r600_pipe_shader *shader = (struct r600_pipe_shader *)state;
 481
 482         if (rctx->ps_shader == shader) {
 483                 rctx->ps_shader = NULL;
 484         }
 485
 486         free(shader->tokens);
 487         r600_pipe_shader_destroy(ctx, shader);
 488         free(shader);
 489 }
 490
 491 void r600_delete_vs_shader(struct pipe_context *ctx, void *state)
 492 {
 493         struct r600_context *rctx = (struct r600_context *)ctx;
 494         struct r600_pipe_shader *shader = (struct r600_pipe_shader *)state;
 495
 496         if (rctx->vs_shader == shader) {
 497                 rctx->vs_shader = NULL;
 498         }
 499
 500         free(shader->tokens);
 501         r600_pipe_shader_destroy(ctx, shader);
 502         free(shader);
 503 }
 504
 505 static void r600_update_alpha_ref(struct r600_context *rctx)
 506 {
 507         unsigned alpha_ref;
 508         struct r600_pipe_state rstate;
 509
 510         alpha_ref = rctx->alpha_ref;
 511         rstate.nregs = 0;
 512         if (rctx->export_16bpc)
 513                 alpha_ref &= ~0x1FFF;
 514         r600_pipe_state_add_reg(&rstate, R_028438_SX_ALPHA_REF, alpha_ref);
 515
 516         r600_context_pipe_state_set(rctx, &rstate);
 517         rctx->alpha_ref_dirty = false;
 518 }
 519
 520 void r600_constant_buffers_dirty(struct r600_context *rctx, struct r600_constbuf_state *state)
 521 {
 522         r600_inval_shader_cache(rctx);
 523         state->atom.num_dw = rctx->chip_class >= EVERGREEN ? util_bitcount(state->dirty_mask)*20
 524                                                            : util_bitcount(state->dirty_mask)*19;
 525         r600_atom_dirty(rctx, &state->atom);
 526 }
 527
 528 void r600_set_constant_buffer(struct pipe_context *ctx, uint shader, uint index,
 529                               struct pipe_resource *buffer)
 530 {
 531         struct r600_context *rctx = (struct r600_context *)ctx;
 532         struct r600_constbuf_state *state;
 533         struct r600_constant_buffer *cb;
 534         uint8_t *ptr;
 535
 536         switch (shader) {
 537         case PIPE_SHADER_VERTEX:
 538                 state = &rctx->vs_constbuf_state;
 539                 break;
 540         case PIPE_SHADER_FRAGMENT:
 541                 state = &rctx->ps_constbuf_state;
 542                 break;
 543         default:
 544                 return;
 545         }
 546
 547         /* Note that the state tracker can unbind constant buffers by
 548          * passing NULL here.
 549          */
 550         if (unlikely(!buffer)) {
 551                 state->enabled_mask &= ~(1 << index);
 552                 state->dirty_mask &= ~(1 << index);
 553                 pipe_resource_reference(&state->cb[index].buffer, NULL);
 554                 return;
 555         }
 556
 557         cb = &state->cb[index];
 558         cb->buffer_size = buffer->width0;
 559
 560         ptr = u_vbuf_resource(buffer)->user_ptr;
 561
 562         if (ptr) {
 563                 /* Upload the user buffer. */
 564                 if (R600_BIG_ENDIAN) {
 565                         uint32_t *tmpPtr;
 566                         unsigned i, size = buffer->width0;
 567
 568                         if (!(tmpPtr = malloc(size))) {
 569                                 R600_ERR("Failed to allocate BE swap buffer.\n");
 570                                 return;
 571                         }
 572
 573                         for (i = 0; i < size / 4; ++i) {
 574                                 tmpPtr[i] = bswap_32(((uint32_t *)ptr)[i]);
 575                         }
 576
 577                         u_upload_data(rctx->vbuf_mgr->uploader, 0, size, tmpPtr, &cb->buffer_offset, &cb->buffer);
 578                         free(tmpPtr);
 579                 } else {
 580                         u_upload_data(rctx->vbuf_mgr->uploader, 0, buffer->width0, ptr, &cb->buffer_offset, &cb->buffer);
 581                 }
 582         } else {
 583                 /* Setup the hw buffer. */
 584                 cb->buffer_offset = 0;
 585                 pipe_resource_reference(&cb->buffer, buffer);
 586         }
 587
 588         state->enabled_mask |= 1 << index;
 589         state->dirty_mask |= 1 << index;
 590         r600_constant_buffers_dirty(rctx, state);
 591 }
 592
 593 struct pipe_stream_output_target *
 594 r600_create_so_target(struct pipe_context *ctx,
 595                       struct pipe_resource *buffer,
 596                       unsigned buffer_offset,
 597                       unsigned buffer_size)
 598 {
 599         struct r600_context *rctx = (struct r600_context *)ctx;
 600         struct r600_so_target *t;
 601         void *ptr;
 602
 603         t = CALLOC_STRUCT(r600_so_target);
 604         if (!t) {
 605                 return NULL;
 606         }
 607
 608         t->b.reference.count = 1;
 609         t->b.context = ctx;
 610         pipe_resource_reference(&t->b.buffer, buffer);
 611         t->b.buffer_offset = buffer_offset;
 612         t->b.buffer_size = buffer_size;
 613
 614         t->filled_size = (struct r600_resource*)
 615                 pipe_buffer_create(ctx->screen, PIPE_BIND_CUSTOM, PIPE_USAGE_STATIC, 4);
 616         ptr = rctx->ws->buffer_map(t->filled_size->buf, rctx->cs, PIPE_TRANSFER_WRITE);
 617         memset(ptr, 0, t->filled_size->buf->size);
 618         rctx->ws->buffer_unmap(t->filled_size->buf);
 619
 620         return &t->b;
 621 }
 622
 623 void r600_so_target_destroy(struct pipe_context *ctx,
 624                             struct pipe_stream_output_target *target)
 625 {
 626         struct r600_so_target *t = (struct r600_so_target*)target;
 627         pipe_resource_reference(&t->b.buffer, NULL);
 628         pipe_resource_reference((struct pipe_resource**)&t->filled_size, NULL);
 629         FREE(t);
 630 }
 631
 632 void r600_set_so_targets(struct pipe_context *ctx,
 633                          unsigned num_targets,
 634                          struct pipe_stream_output_target **targets,
 635                          unsigned append_bitmask)
 636 {
 637         struct r600_context *rctx = (struct r600_context *)ctx;
 638         unsigned i;
 639
 640         /* Stop streamout. */
 641         if (rctx->num_so_targets) {
 642                 r600_context_streamout_end(rctx);
 643         }
 644
 645         /* Set the new targets. */
 646         for (i = 0; i < num_targets; i++) {
 647                 pipe_so_target_reference((struct pipe_stream_output_target**)&rctx->so_targets[i], targets[i]);
 648         }
 649         for (; i < rctx->num_so_targets; i++) {
 650                 pipe_so_target_reference((struct pipe_stream_output_target**)&rctx->so_targets[i], NULL);
 651         }
 652
 653         rctx->num_so_targets = num_targets;
 654         rctx->streamout_start = num_targets != 0;
 655         rctx->streamout_append_bitmask = append_bitmask;
 656 }
 657
 658 static int r600_shader_rebuild(struct pipe_context * ctx, struct r600_pipe_shader * shader)
 659 {
 660         struct r600_context *rctx = (struct r600_context *)ctx;
 661         int r;
 662
 663         r600_pipe_shader_destroy(ctx, shader);
 664         r = r600_pipe_shader_create(ctx, shader);
 665         if (r) {
 666                 return r;
 667         }
 668         r600_context_pipe_state_set(rctx, &shader->rstate);
 669
 670         return 0;
 671 }
 672
 673 static void r600_update_derived_state(struct r600_context *rctx)
 674 {
 675         struct pipe_context * ctx = (struct pipe_context*)rctx;
 676
 677         if (!rctx->blitter->running) {
 678                 if (rctx->have_depth_fb || rctx->have_depth_texture)
 679                         r600_flush_depth_textures(rctx);
 680         }
 681
 682         if (rctx->chip_class < EVERGREEN) {
 683                 r600_update_sampler_states(rctx);
 684         }
 685
 686         if ((rctx->ps_shader->shader.two_side != rctx->two_side) ||
 687             ((rctx->chip_class >= EVERGREEN) && rctx->ps_shader->shader.fs_write_all &&
 688              (rctx->ps_shader->shader.nr_cbufs != rctx->nr_cbufs))) {
 689                 r600_shader_rebuild(&rctx->context, rctx->ps_shader);
 690         }
 691
 692         if (rctx->alpha_ref_dirty) {
 693                 r600_update_alpha_ref(rctx);
 694         }
 695
 696         if (rctx->ps_shader && ((rctx->sprite_coord_enable &&
 697                 (rctx->ps_shader->sprite_coord_enable != rctx->sprite_coord_enable)) ||
 698                 (rctx->rasterizer && rctx->rasterizer->flatshade != rctx->ps_shader->flatshade))) {
 699
 700                 if (rctx->chip_class >= EVERGREEN)
 701                         evergreen_pipe_shader_ps(ctx, rctx->ps_shader);
 702                 else
 703                         r600_pipe_shader_ps(ctx, rctx->ps_shader);
 704
 705                 r600_context_pipe_state_set(rctx, &rctx->ps_shader->rstate);
 706         }
 707
 708         if (rctx->dual_src_blend)
 709                 rctx->cb_shader_mask = rctx->ps_shader->ps_cb_shader_mask | rctx->fb_cb_shader_mask;
 710         else
 711                 rctx->cb_shader_mask = rctx->fb_cb_shader_mask;
 712 }
 713
 714 static unsigned r600_conv_prim_to_gs_out(unsigned mode)
 715 {
 716         static const int prim_conv[] = {
 717                 V_028A6C_OUTPRIM_TYPE_POINTLIST,
 718                 V_028A6C_OUTPRIM_TYPE_LINESTRIP,
 719                 V_028A6C_OUTPRIM_TYPE_LINESTRIP,
 720                 V_028A6C_OUTPRIM_TYPE_LINESTRIP,
 721                 V_028A6C_OUTPRIM_TYPE_TRISTRIP,
 722                 V_028A6C_OUTPRIM_TYPE_TRISTRIP,
 723                 V_028A6C_OUTPRIM_TYPE_TRISTRIP,
 724                 V_028A6C_OUTPRIM_TYPE_TRISTRIP,
 725                 V_028A6C_OUTPRIM_TYPE_TRISTRIP,
 726                 V_028A6C_OUTPRIM_TYPE_TRISTRIP,
 727                 V_028A6C_OUTPRIM_TYPE_LINESTRIP,
 728                 V_028A6C_OUTPRIM_TYPE_LINESTRIP,
 729                 V_028A6C_OUTPRIM_TYPE_TRISTRIP,
 730                 V_028A6C_OUTPRIM_TYPE_TRISTRIP
 731         };
 732         assert(mode < Elements(prim_conv));
 733
 734         return prim_conv[mode];
 735 }
 736
 737 void r600_draw_vbo(struct pipe_context *ctx, const struct pipe_draw_info *dinfo)
 738 {
 739         struct r600_context *rctx = (struct r600_context *)ctx;
 740         struct pipe_draw_info info = *dinfo;
 741         struct pipe_index_buffer ib = {};
 742         unsigned prim, mask, ls_mask = 0;
 743         struct r600_block *dirty_block = NULL, *next_block = NULL;
 744         struct r600_atom *state = NULL, *next_state = NULL;
 745         struct radeon_winsys_cs *cs = rctx->cs;
 746         uint64_t va;
 747         uint8_t *ptr;
 748
 749         if ((!info.count && (info.indexed || !info.count_from_stream_output)) ||
 750             (info.indexed && !rctx->index_buffer.buffer) ||
 751             !r600_conv_pipe_prim(info.mode, &prim)) {
 752                 assert(0);
 753                 return;
 754         }
 755
 756         if (!rctx->vs_shader) {
 757                 assert(0);
 758                 return;
 759         }
 760
 761         r600_update_derived_state(rctx);
 762
 763         /* Update vertex buffers. */
 764         u_vbuf_draw_begin(rctx->vbuf_mgr, &info);
 765         if (rctx->vertex_buffers_dirty) {
 766                 r600_inval_vertex_cache(rctx);
 767                 rctx->vertex_buffer_state.num_dw = (rctx->chip_class >= EVERGREEN ? 12 : 10) *
 768                                                    rctx->nr_vertex_buffers;
 769                 r600_atom_dirty(rctx, &rctx->vertex_buffer_state);
 770                 rctx->vertex_buffers_dirty = FALSE;
 771         }
 772
 773         if (info.indexed) {
 774                 /* Initialize the index buffer struct. */
 775                 pipe_resource_reference(&ib.buffer, rctx->index_buffer.buffer);
 776                 ib.index_size = rctx->index_buffer.index_size;
 777                 ib.offset = rctx->index_buffer.offset + info.start * ib.index_size;
 778
 779                 /* Translate or upload, if needed. */
 780                 r600_translate_index_buffer(rctx, &ib, info.count);
 781
 782                 ptr = u_vbuf_resource(ib.buffer)->user_ptr;
 783                 if (ptr) {
 784                         u_upload_data(rctx->vbuf_mgr->uploader, 0, info.count * ib.index_size,
 785                                       ptr, &ib.offset, &ib.buffer);
 786                 }
 787         } else {
 788                 info.index_bias = info.start;
 789                 if (info.count_from_stream_output) {
 790                         r600_context_draw_opaque_count(rctx, (struct r600_so_target*)info.count_from_stream_output);
 791                 }
 792         }
 793
 794         mask = (1ULL << ((unsigned)rctx->framebuffer.nr_cbufs * 4)) - 1;
 795
 796         if (rctx->vgt.id != R600_PIPE_STATE_VGT) {
 797                 rctx->vgt.id = R600_PIPE_STATE_VGT;
 798                 rctx->vgt.nregs = 0;
 799                 r600_pipe_state_add_reg(&rctx->vgt, R_008958_VGT_PRIMITIVE_TYPE, prim);
 800                 r600_pipe_state_add_reg(&rctx->vgt, R_028A6C_VGT_GS_OUT_PRIM_TYPE, 0);
 801                 r600_pipe_state_add_reg(&rctx->vgt, R_028238_CB_TARGET_MASK, rctx->cb_target_mask & mask);
 802                 r600_pipe_state_add_reg(&rctx->vgt, R_02823C_CB_SHADER_MASK, 0);
 803                 r600_pipe_state_add_reg(&rctx->vgt, R_028408_VGT_INDX_OFFSET, info.index_bias);
 804                 r600_pipe_state_add_reg(&rctx->vgt, R_02840C_VGT_MULTI_PRIM_IB_RESET_INDX, info.restart_index);
 805                 r600_pipe_state_add_reg(&rctx->vgt, R_028A94_VGT_MULTI_PRIM_IB_RESET_EN, info.primitive_restart);
 806                 r600_pipe_state_add_reg(&rctx->vgt, R_03CFF4_SQ_VTX_START_INST_LOC, info.start_instance);
 807                 r600_pipe_state_add_reg(&rctx->vgt, R_028A0C_PA_SC_LINE_STIPPLE, 0);
 808                 if (rctx->chip_class <= R700)
 809                         r600_pipe_state_add_reg(&rctx->vgt, R_028808_CB_COLOR_CONTROL, rctx->cb_color_control);
 810                 r600_pipe_state_add_reg(&rctx->vgt, R_02881C_PA_CL_VS_OUT_CNTL, 0);
 811                 r600_pipe_state_add_reg(&rctx->vgt, R_028810_PA_CL_CLIP_CNTL, 0);
 812
 813                 if (rctx->chip_class <= R700)
 814                         r600_pipe_state_add_reg(&rctx->vgt, R_0280A4_CB_COLOR1_INFO, 0);
 815                 else
 816                         r600_pipe_state_add_reg(&rctx->vgt, 0x28CAC, 0);
 817         }
 818
 819         rctx->vgt.nregs = 0;
 820         r600_pipe_state_mod_reg(&rctx->vgt, prim);
 821         r600_pipe_state_mod_reg(&rctx->vgt, r600_conv_prim_to_gs_out(info.mode));
 822         r600_pipe_state_mod_reg(&rctx->vgt, rctx->cb_target_mask & mask);
 823         r600_pipe_state_mod_reg(&rctx->vgt, rctx->cb_shader_mask);
 824         r600_pipe_state_mod_reg(&rctx->vgt, info.index_bias);
 825         r600_pipe_state_mod_reg(&rctx->vgt, info.restart_index);
 826         r600_pipe_state_mod_reg(&rctx->vgt, info.primitive_restart);
 827         r600_pipe_state_mod_reg(&rctx->vgt, info.start_instance);
 828
 829         if (prim == V_008958_DI_PT_LINELIST)
 830                 ls_mask = 1;
 831         else if (prim == V_008958_DI_PT_LINESTRIP)
 832                 ls_mask = 2;
 833         r600_pipe_state_mod_reg(&rctx->vgt, S_028A0C_AUTO_RESET_CNTL(ls_mask) | rctx->pa_sc_line_stipple);
 834         if (rctx->chip_class <= R700)
 835                 r600_pipe_state_mod_reg(&rctx->vgt, rctx->cb_color_control);
 836         r600_pipe_state_mod_reg(&rctx->vgt,
 837                                 rctx->vs_shader->pa_cl_vs_out_cntl |
 838                                 (rctx->rasterizer->clip_plane_enable & rctx->vs_shader->shader.clip_dist_write));
 839         r600_pipe_state_mod_reg(&rctx->vgt,
 840                                 rctx->pa_cl_clip_cntl |
 841                                 (rctx->vs_shader->shader.clip_dist_write ||
 842                                  rctx->vs_shader->shader.vs_prohibit_ucps ?
 843                                  0 : rctx->rasterizer->clip_plane_enable & 0x3F));
 844
 845         if (rctx->dual_src_blend) {
 846                 r600_pipe_state_mod_reg(&rctx->vgt,
 847                                         rctx->color0_format);
 848         }
 849
 850         r600_context_pipe_state_set(rctx, &rctx->vgt);
 851
 852         /* Emit states (the function expects that we emit at most 17 dwords here). */
 853         r600_need_cs_space(rctx, 0, TRUE);
 854
 855         LIST_FOR_EACH_ENTRY_SAFE(state, next_state, &rctx->dirty_states, head) {
 856                 r600_emit_atom(rctx, state);
 857         }
 858         LIST_FOR_EACH_ENTRY_SAFE(dirty_block, next_block, &rctx->dirty,list) {
 859                 r600_context_block_emit_dirty(rctx, dirty_block);
 860         }
 861         LIST_FOR_EACH_ENTRY_SAFE(dirty_block, next_block, &rctx->resource_dirty,list) {
 862                 r600_context_block_resource_emit_dirty(rctx, dirty_block);
 863         }
 864         rctx->pm4_dirty_cdwords = 0;
 865
 866         /* Enable stream out if needed. */
 867         if (rctx->streamout_start) {
 868                 r600_context_streamout_begin(rctx);
 869                 rctx->streamout_start = FALSE;
 870         }
 871
 872         /* draw packet */
 873         cs->buf[cs->cdw++] = PKT3(PKT3_INDEX_TYPE, 0, rctx->predicate_drawing);
 874         cs->buf[cs->cdw++] = ib.index_size == 4 ?
 875                                 (VGT_INDEX_32 | (R600_BIG_ENDIAN ? VGT_DMA_SWAP_32_BIT : 0)) :
 876                                 (VGT_INDEX_16 | (R600_BIG_ENDIAN ? VGT_DMA_SWAP_16_BIT : 0));
 877         cs->buf[cs->cdw++] = PKT3(PKT3_NUM_INSTANCES, 0, rctx->predicate_drawing);
 878         cs->buf[cs->cdw++] = info.instance_count;
 879         if (info.indexed) {
 880                 va = r600_resource_va(ctx->screen, ib.buffer);
 881                 va += ib.offset;
 882                 cs->buf[cs->cdw++] = PKT3(PKT3_DRAW_INDEX, 3, rctx->predicate_drawing);
 883                 cs->buf[cs->cdw++] = va;
 884                 cs->buf[cs->cdw++] = (va >> 32UL) & 0xFF;
 885                 cs->buf[cs->cdw++] = info.count;
 886                 cs->buf[cs->cdw++] = V_0287F0_DI_SRC_SEL_DMA;
 887                 cs->buf[cs->cdw++] = PKT3(PKT3_NOP, 0, rctx->predicate_drawing);
 888                 cs->buf[cs->cdw++] = r600_context_bo_reloc(rctx, (struct r600_resource*)ib.buffer, RADEON_USAGE_READ);
 889         } else {
 890                 cs->buf[cs->cdw++] = PKT3(PKT3_DRAW_INDEX_AUTO, 1, rctx->predicate_drawing);
 891                 cs->buf[cs->cdw++] = info.count;
 892                 cs->buf[cs->cdw++] = V_0287F0_DI_SRC_SEL_AUTO_INDEX |
 893                                         (info.count_from_stream_output ? S_0287F0_USE_OPAQUE(1) : 0);
 894         }
 895
 896         rctx->flags |= R600_CONTEXT_DST_CACHES_DIRTY | R600_CONTEXT_DRAW_PENDING;
 897
 898         if (rctx->framebuffer.zsbuf)
 899         {
 900                 struct pipe_resource *tex = rctx->framebuffer.zsbuf->texture;
 901                 ((struct r600_resource_texture *)tex)->dirty_db = TRUE;
 902         }
 903
 904         pipe_resource_reference(&ib.buffer, NULL);
 905         u_vbuf_draw_end(rctx->vbuf_mgr);
 906 }
 907
 908 void _r600_pipe_state_add_reg_bo(struct r600_context *ctx,
 909                                  struct r600_pipe_state *state,
 910                                  uint32_t offset, uint32_t value,
 911                                  uint32_t range_id, uint32_t block_id,
 912                                  struct r600_resource *bo,
 913                                  enum radeon_bo_usage usage)
 914
 915 {
 916         struct r600_range *range;
 917         struct r600_block *block;
 918
 919         if (bo) assert(usage);
 920
 921         range = &ctx->range[range_id];
 922         block = range->blocks[block_id];
 923         state->regs[state->nregs].block = block;
 924         state->regs[state->nregs].id = (offset - block->start_offset) >> 2;
 925
 926         state->regs[state->nregs].value = value;
 927         state->regs[state->nregs].bo = bo;
 928         state->regs[state->nregs].bo_usage = usage;
 929
 930         state->nregs++;
 931         assert(state->nregs < R600_BLOCK_MAX_REG);
 932 }
 933
 934 void _r600_pipe_state_add_reg(struct r600_context *ctx,
 935                               struct r600_pipe_state *state,
 936                               uint32_t offset, uint32_t value,
 937                               uint32_t range_id, uint32_t block_id)
 938 {
 939         _r600_pipe_state_add_reg_bo(ctx, state, offset, value,
 940                                     range_id, block_id, NULL, 0);
 941 }
 942
 943 void r600_pipe_state_add_reg_noblock(struct r600_pipe_state *state,
 944                                      uint32_t offset, uint32_t value,
 945                                      struct r600_resource *bo,
 946                                      enum radeon_bo_usage usage)
 947 {
 948         if (bo) assert(usage);
 949
 950         state->regs[state->nregs].id = offset;
 951         state->regs[state->nregs].block = NULL;
 952         state->regs[state->nregs].value = value;
 953         state->regs[state->nregs].bo = bo;
 954         state->regs[state->nregs].bo_usage = usage;
 955
 956         state->nregs++;
 957         assert(state->nregs < R600_BLOCK_MAX_REG);
 958 }
 959
 960 uint32_t r600_translate_stencil_op(int s_op)
 961 {
 962         switch (s_op) {
 963         case PIPE_STENCIL_OP_KEEP:
 964                 return V_028800_STENCIL_KEEP;
 965         case PIPE_STENCIL_OP_ZERO:
 966                 return V_028800_STENCIL_ZERO;
 967         case PIPE_STENCIL_OP_REPLACE:
 968                 return V_028800_STENCIL_REPLACE;
 969         case PIPE_STENCIL_OP_INCR:
 970                 return V_028800_STENCIL_INCR;
 971         case PIPE_STENCIL_OP_DECR:
 972                 return V_028800_STENCIL_DECR;
 973         case PIPE_STENCIL_OP_INCR_WRAP:
 974                 return V_028800_STENCIL_INCR_WRAP;
 975         case PIPE_STENCIL_OP_DECR_WRAP:
 976                 return V_028800_STENCIL_DECR_WRAP;
 977         case PIPE_STENCIL_OP_INVERT:
 978                 return V_028800_STENCIL_INVERT;
 979         default:
 980                 R600_ERR("Unknown stencil op %d", s_op);
 981                 assert(0);
 982                 break;
 983         }
 984         return 0;
 985 }
 986
 987 uint32_t r600_translate_fill(uint32_t func)
 988 {
 989         switch(func) {
 990         case PIPE_POLYGON_MODE_FILL:
 991                 return 2;
 992         case PIPE_POLYGON_MODE_LINE:
 993                 return 1;
 994         case PIPE_POLYGON_MODE_POINT:
 995                 return 0;
 996         default:
 997                 assert(0);
 998                 return 0;
 999         }
1000 }
1001
1002 unsigned r600_tex_wrap(unsigned wrap)
1003 {
1004         switch (wrap) {
1005         default:
1006         case PIPE_TEX_WRAP_REPEAT:
1007                 return V_03C000_SQ_TEX_WRAP;
1008         case PIPE_TEX_WRAP_CLAMP:
1009                 return V_03C000_SQ_TEX_CLAMP_HALF_BORDER;
1010         case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
1011                 return V_03C000_SQ_TEX_CLAMP_LAST_TEXEL;
1012         case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
1013                 return V_03C000_SQ_TEX_CLAMP_BORDER;
1014         case PIPE_TEX_WRAP_MIRROR_REPEAT:
1015                 return V_03C000_SQ_TEX_MIRROR;
1016         case PIPE_TEX_WRAP_MIRROR_CLAMP:
1017                 return V_03C000_SQ_TEX_MIRROR_ONCE_HALF_BORDER;
1018         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
1019                 return V_03C000_SQ_TEX_MIRROR_ONCE_LAST_TEXEL;
1020         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
1021                 return V_03C000_SQ_TEX_MIRROR_ONCE_BORDER;
1022         }
1023 }
1024
1025 unsigned r600_tex_filter(unsigned filter)
1026 {
1027         switch (filter) {
1028         default:
1029         case PIPE_TEX_FILTER_NEAREST:
1030                 return V_03C000_SQ_TEX_XY_FILTER_POINT;
1031         case PIPE_TEX_FILTER_LINEAR:
1032                 return V_03C000_SQ_TEX_XY_FILTER_BILINEAR;
1033         }
1034 }
1035
1036 unsigned r600_tex_mipfilter(unsigned filter)
1037 {
1038         switch (filter) {
1039         case PIPE_TEX_MIPFILTER_NEAREST:
1040                 return V_03C000_SQ_TEX_Z_FILTER_POINT;
1041         case PIPE_TEX_MIPFILTER_LINEAR:
1042                 return V_03C000_SQ_TEX_Z_FILTER_LINEAR;
1043         default:
1044         case PIPE_TEX_MIPFILTER_NONE:
1045                 return V_03C000_SQ_TEX_Z_FILTER_NONE;
1046         }
1047 }
1048
1049 unsigned r600_tex_compare(unsigned compare)
1050 {
1051         switch (compare) {
1052         default:
1053         case PIPE_FUNC_NEVER:
1054                 return V_03C000_SQ_TEX_DEPTH_COMPARE_NEVER;
1055         case PIPE_FUNC_LESS:
1056                 return V_03C000_SQ_TEX_DEPTH_COMPARE_LESS;
1057         case PIPE_FUNC_EQUAL:
1058                 return V_03C000_SQ_TEX_DEPTH_COMPARE_EQUAL;
1059         case PIPE_FUNC_LEQUAL:
1060                 return V_03C000_SQ_TEX_DEPTH_COMPARE_LESSEQUAL;
1061         case PIPE_FUNC_GREATER:
1062                 return V_03C000_SQ_TEX_DEPTH_COMPARE_GREATER;
1063         case PIPE_FUNC_NOTEQUAL:
1064                 return V_03C000_SQ_TEX_DEPTH_COMPARE_NOTEQUAL;
1065         case PIPE_FUNC_GEQUAL:
1066                 return V_03C000_SQ_TEX_DEPTH_COMPARE_GREATEREQUAL;
1067         case PIPE_FUNC_ALWAYS:
1068                 return V_03C000_SQ_TEX_DEPTH_COMPARE_ALWAYS;
1069         }
1070 }