src/gallium/drivers/r300/r300_screen.c

   1 /*
   2  * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
   3  * Copyright 2010 Marek Olšák <maraeo@gmail.com>
   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 #include "util/u_format.h"
  25 #include "util/u_format_s3tc.h"
  26 #include "util/u_memory.h"
  27 #include "os/os_time.h"
  28
  29 #include "r300_context.h"
  30 #include "r300_texture.h"
  31 #include "r300_screen_buffer.h"
  32 #include "r300_state_inlines.h"
  33 #include "r300_winsys.h"
  34 #include "r300_public.h"
  35
  36 #include "draw/draw_context.h"
  37
  38 /* Return the identifier behind whom the brave coders responsible for this
  39  * amalgamation of code, sweat, and duct tape, routinely obscure their names.
  40  *
  41  * ...I should have just put "Corbin Simpson", but I'm not that cool.
  42  *
  43  * (Or egotistical. Yet.) */
  44 static const char* r300_get_vendor(struct pipe_screen* pscreen)
  45 {
  46     return "X.Org R300 Project";
  47 }
  48
  49 static const char* chip_families[] = {
  50     "ATI R300",
  51     "ATI R350",
  52     "ATI R360",
  53     "ATI RV350",
  54     "ATI RV370",
  55     "ATI RV380",
  56     "ATI R420",
  57     "ATI R423",
  58     "ATI R430",
  59     "ATI R480",
  60     "ATI R481",
  61     "ATI RV410",
  62     "ATI RS400",
  63     "ATI RC410",
  64     "ATI RS480",
  65     "ATI RS482",
  66     "ATI RS600",
  67     "ATI RS690",
  68     "ATI RS740",
  69     "ATI RV515",
  70     "ATI R520",
  71     "ATI RV530",
  72     "ATI R580",
  73     "ATI RV560",
  74     "ATI RV570"
  75 };
  76
  77 static const char* r300_get_name(struct pipe_screen* pscreen)
  78 {
  79     struct r300_screen* r300screen = r300_screen(pscreen);
  80
  81     return chip_families[r300screen->caps.family];
  82 }
  83
  84 static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
  85 {
  86     struct r300_screen* r300screen = r300_screen(pscreen);
  87     boolean is_r500 = r300screen->caps.is_r500;
  88
  89     switch (param) {
  90         /* Supported features (boolean caps). */
  91         case PIPE_CAP_NPOT_TEXTURES:
  92         case PIPE_CAP_TWO_SIDED_STENCIL:
  93         case PIPE_CAP_GLSL:
  94             /* I'll be frank. This is a lie.
  95              *
  96              * We don't truly support GLSL on any of this driver's chipsets.
  97              * To be fair, no chipset supports the full GLSL specification
  98              * to the best of our knowledge, but some of the less esoteric
  99              * features are still missing here.
 100              *
 101              * Rather than cripple ourselves intentionally, I'm going to set
 102              * this flag, and as Gallium's interface continues to change, I
 103              * hope that this single monolithic GLSL enable can slowly get
 104              * split down into many different pieces and the state tracker
 105              * will handle fallbacks transparently, like it should.
 106              *
 107              * ~ C.
 108              */
 109         case PIPE_CAP_ANISOTROPIC_FILTER:
 110         case PIPE_CAP_POINT_SPRITE:
 111         case PIPE_CAP_OCCLUSION_QUERY:
 112         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 113         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 114         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 115         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 116         case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 117             return 1;
 118         case PIPE_CAP_TEXTURE_SWIZZLE:
 119             return util_format_s3tc_enabled ? r300screen->caps.dxtc_swizzle : 1;
 120
 121         /* Unsupported features (boolean caps). */
 122         case PIPE_CAP_TIMER_QUERY:
 123         case PIPE_CAP_DUAL_SOURCE_BLEND:
 124         case PIPE_CAP_INDEP_BLEND_ENABLE:
 125         case PIPE_CAP_INDEP_BLEND_FUNC:
 126         case PIPE_CAP_DEPTH_CLAMP:
 127         case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 128         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 129         case PIPE_CAP_ARRAY_TEXTURES:
 130             return 0;
 131
 132         /* SWTCL-only features. */
 133         case PIPE_CAP_STREAM_OUTPUT:
 134         case PIPE_CAP_PRIMITIVE_RESTART:
 135         case PIPE_CAP_TGSI_INSTANCEID:
 136             return !r300screen->caps.has_tcl;
 137
 138         /* Texturing. */
 139         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
 140         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 141             return r300screen->caps.num_tex_units;
 142         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 143             return 0;
 144         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 145         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 146         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 147             /* 13 == 4096, 12 == 2048 */
 148             return is_r500 ? 13 : 12;
 149
 150         /* Render targets. */
 151         case PIPE_CAP_MAX_RENDER_TARGETS:
 152             return 4;
 153
 154         /* General shader limits and features. */
 155         case PIPE_CAP_SM3:
 156             return is_r500 ? 1 : 0;
 157         /* Fragment coordinate conventions. */
 158         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 159         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 160             return 1;
 161         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 162         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 163             return 0;
 164         default:
 165             debug_printf("r300: Warning: Unknown CAP %d in get_param.\n",
 166                          param);
 167             return 0;
 168     }
 169 }
 170
 171 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 172 {
 173    struct r300_screen* r300screen = r300_screen(pscreen);
 174    boolean is_r400 = r300screen->caps.is_r400;
 175    boolean is_r500 = r300screen->caps.is_r500;
 176
 177    switch (shader)
 178     {
 179     case PIPE_SHADER_FRAGMENT:
 180         switch (param)
 181         {
 182         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 183             return is_r500 || is_r400 ? 512 : 96;
 184         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 185             return is_r500 || is_r400 ? 512 : 64;
 186         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 187             return is_r500 || is_r400 ? 512 : 32;
 188         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 189             return is_r500 ? 511 : 4;
 190         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 191             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 192             /* Fragment shader limits. */
 193         case PIPE_SHADER_CAP_MAX_INPUTS:
 194             /* 2 colors + 8 texcoords are always supported
 195              * (minus fog and wpos).
 196              *
 197              * R500 has the ability to turn 3rd and 4th color into
 198              * additional texcoords but there is no two-sided color
 199              * selection then. However the facing bit can be used instead. */
 200             return 10;
 201         case PIPE_SHADER_CAP_MAX_CONSTS:
 202             return is_r500 ? 256 : 32;
 203         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 204             return 1;
 205         case PIPE_SHADER_CAP_MAX_TEMPS:
 206             return is_r500 ? 128 : is_r400 ? 64 : 32;
 207         case PIPE_SHADER_CAP_MAX_ADDRS:
 208             return 0;
 209         case PIPE_SHADER_CAP_MAX_PREDS:
 210             return is_r500 ? 1 : 0;
 211         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 212             return 1;
 213         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 214         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 215         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 216         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 217             return 0;
 218         case PIPE_SHADER_CAP_SUBROUTINES:
 219             return 0;
 220         }
 221         break;
 222     case PIPE_SHADER_VERTEX:
 223         if (!r300screen->caps.has_tcl) {
 224             return draw_get_shader_param(shader, param);
 225         }
 226
 227         switch (param)
 228         {
 229         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 230         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 231             return is_r500 ? 1024 : 256;
 232         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 233         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 234             return 0;
 235         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 236             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 237         case PIPE_SHADER_CAP_MAX_INPUTS:
 238             return 16;
 239         case PIPE_SHADER_CAP_MAX_CONSTS:
 240             return 256;
 241         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 242             return 1;
 243         case PIPE_SHADER_CAP_MAX_TEMPS:
 244             return 32;
 245         case PIPE_SHADER_CAP_MAX_ADDRS:
 246             return 1; /* XXX guessed */
 247         case PIPE_SHADER_CAP_MAX_PREDS:
 248             return is_r500 ? 4 : 0; /* XXX guessed. */
 249         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 250             return 1;
 251         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 252         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 253         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 254             return 0;
 255         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 256             return 1;
 257         case PIPE_SHADER_CAP_SUBROUTINES:
 258             return 0;
 259         default:
 260             break;
 261         }
 262         break;
 263     default:
 264         break;
 265     }
 266     return 0;
 267 }
 268
 269 static float r300_get_paramf(struct pipe_screen* pscreen, enum pipe_cap param)
 270 {
 271     struct r300_screen* r300screen = r300_screen(pscreen);
 272
 273     switch (param) {
 274         case PIPE_CAP_MAX_LINE_WIDTH:
 275         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 276         case PIPE_CAP_MAX_POINT_WIDTH:
 277         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 278             /* The maximum dimensions of the colorbuffer are our practical
 279              * rendering limits. 2048 pixels should be enough for anybody. */
 280             if (r300screen->caps.is_r500) {
 281                 return 4096.0f;
 282             } else if (r300screen->caps.is_r400) {
 283                 return 4021.0f;
 284             } else {
 285                 return 2560.0f;
 286             }
 287         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 288             return 16.0f;
 289         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 290             return 16.0f;
 291         case PIPE_CAP_GUARD_BAND_LEFT:
 292         case PIPE_CAP_GUARD_BAND_TOP:
 293         case PIPE_CAP_GUARD_BAND_RIGHT:
 294         case PIPE_CAP_GUARD_BAND_BOTTOM:
 295             /* XXX I don't know what these should be but the least we can do is
 296              * silence the potential error message */
 297             return 0.0f;
 298         default:
 299             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 300                          param);
 301             return 0.0f;
 302     }
 303 }
 304
 305 static boolean r300_is_format_supported(struct pipe_screen* screen,
 306                                         enum pipe_format format,
 307                                         enum pipe_texture_target target,
 308                                         unsigned sample_count,
 309                                         unsigned usage)
 310 {
 311     struct r300_winsys_screen *rws = r300_screen(screen)->rws;
 312     uint32_t retval = 0;
 313     boolean drm_2_8_0 = rws->get_value(rws, R300_VID_DRM_2_8_0);
 314     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 315     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 316     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 317                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 318                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 319                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 320     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 321                        format == PIPE_FORMAT_RGTC1_SNORM ||
 322                        format == PIPE_FORMAT_LATC1_UNORM ||
 323                        format == PIPE_FORMAT_LATC1_SNORM;
 324     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 325                        format == PIPE_FORMAT_RGTC2_SNORM ||
 326                        format == PIPE_FORMAT_LATC2_UNORM ||
 327                        format == PIPE_FORMAT_LATC2_SNORM;
 328     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 329                             format == PIPE_FORMAT_R16G16_FLOAT ||
 330                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 331                             format == PIPE_FORMAT_R16G16B16A16_FLOAT;
 332
 333     /* Check multisampling support. */
 334     switch (sample_count) {
 335         case 0:
 336         case 1:
 337             break;
 338         case 2:
 339         case 3:
 340         case 4:
 341         case 6:
 342             return FALSE;
 343 #if 0
 344             if (usage != PIPE_BIND_RENDER_TARGET ||
 345                 !util_format_is_rgba8_variant(
 346                     util_format_description(format))) {
 347                 return FALSE;
 348             }
 349 #endif
 350             break;
 351         default:
 352             return FALSE;
 353     }
 354
 355     /* Check sampler format support. */
 356     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 357         /* ATI1N is r5xx-only. */
 358         (is_r500 || !is_ati1n) &&
 359         /* ATI2N is supported on r4xx-r5xx. */
 360         (is_r400 || is_r500 || !is_ati2n) &&
 361         r300_is_sampler_format_supported(format)) {
 362         retval |= PIPE_BIND_SAMPLER_VIEW;
 363     }
 364
 365     /* Check colorbuffer format support. */
 366     if ((usage & (PIPE_BIND_RENDER_TARGET |
 367                   PIPE_BIND_DISPLAY_TARGET |
 368                   PIPE_BIND_SCANOUT |
 369                   PIPE_BIND_SHARED)) &&
 370         /* 2101010 cannot be rendered to on non-r5xx. */
 371         (!is_color2101010 || (is_r500 && drm_2_8_0)) &&
 372         r300_is_colorbuffer_format_supported(format)) {
 373         retval |= usage &
 374             (PIPE_BIND_RENDER_TARGET |
 375              PIPE_BIND_DISPLAY_TARGET |
 376              PIPE_BIND_SCANOUT |
 377              PIPE_BIND_SHARED);
 378     }
 379
 380     /* Check depth-stencil format support. */
 381     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 382         r300_is_zs_format_supported(format)) {
 383         retval |= PIPE_BIND_DEPTH_STENCIL;
 384     }
 385
 386     /* Check vertex buffer format support. */
 387     if (usage & PIPE_BIND_VERTEX_BUFFER &&
 388         /* Half float is supported on >= RV350. */
 389         (is_r400 || is_r500 || !is_half_float) &&
 390         r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
 391         retval |= PIPE_BIND_VERTEX_BUFFER;
 392     }
 393
 394     /* Transfers are always supported. */
 395     if (usage & PIPE_BIND_TRANSFER_READ)
 396         retval |= PIPE_BIND_TRANSFER_READ;
 397     if (usage & PIPE_BIND_TRANSFER_WRITE)
 398         retval |= PIPE_BIND_TRANSFER_WRITE;
 399
 400     return retval == usage;
 401 }
 402
 403 static void r300_destroy_screen(struct pipe_screen* pscreen)
 404 {
 405     struct r300_screen* r300screen = r300_screen(pscreen);
 406     struct r300_winsys_screen *rws = r300_winsys_screen(pscreen);
 407
 408     util_slab_destroy(&r300screen->pool_buffers);
 409     pipe_mutex_destroy(r300screen->num_contexts_mutex);
 410
 411     if (rws)
 412       rws->destroy(rws);
 413
 414     FREE(r300screen);
 415 }
 416
 417 static void r300_fence_reference(struct pipe_screen *screen,
 418                                  struct pipe_fence_handle **ptr,
 419                                  struct pipe_fence_handle *fence)
 420 {
 421     r300_winsys_bo_reference((struct r300_winsys_bo**)ptr,
 422                              (struct r300_winsys_bo*)fence);
 423 }
 424
 425 static boolean r300_fence_signalled(struct pipe_screen *screen,
 426                                     struct pipe_fence_handle *fence)
 427 {
 428     struct r300_winsys_screen *rws = r300_screen(screen)->rws;
 429     struct r300_winsys_bo *rfence = (struct r300_winsys_bo*)fence;
 430
 431     return !rws->buffer_is_busy(rfence);
 432 }
 433
 434 static boolean r300_fence_finish(struct pipe_screen *screen,
 435                                  struct pipe_fence_handle *fence,
 436                                  uint64_t timeout)
 437 {
 438     struct r300_winsys_screen *rws = r300_screen(screen)->rws;
 439     struct r300_winsys_bo *rfence = (struct r300_winsys_bo*)fence;
 440
 441     if (timeout != PIPE_TIMEOUT_INFINITE) {
 442         int64_t start_time = os_time_get();
 443
 444         /* Convert to microseconds. */
 445         timeout /= 1000;
 446
 447         /* Wait in a loop. */
 448         while (rws->buffer_is_busy(rfence)) {
 449             if (os_time_get() - start_time >= timeout) {
 450                 return FALSE;
 451             }
 452             os_time_sleep(10);
 453         }
 454         return TRUE;
 455     }
 456
 457     rws->buffer_wait(rfence);
 458     return TRUE;
 459 }
 460
 461 struct pipe_screen* r300_screen_create(struct r300_winsys_screen *rws)
 462 {
 463     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 464
 465     if (!r300screen) {
 466         FREE(r300screen);
 467         return NULL;
 468     }
 469
 470     r300screen->caps.pci_id = rws->get_value(rws, R300_VID_PCI_ID);
 471     r300screen->caps.num_frag_pipes = rws->get_value(rws, R300_VID_GB_PIPES);
 472     r300screen->caps.num_z_pipes = rws->get_value(rws, R300_VID_Z_PIPES);
 473
 474     r300_init_debug(r300screen);
 475     r300_parse_chipset(&r300screen->caps);
 476
 477     if (SCREEN_DBG_ON(r300screen, DBG_NO_ZMASK))
 478         r300screen->caps.zmask_ram = 0;
 479     if (SCREEN_DBG_ON(r300screen, DBG_NO_HIZ))
 480         r300screen->caps.hiz_ram = 0;
 481
 482     pipe_mutex_init(r300screen->num_contexts_mutex);
 483
 484     util_slab_create(&r300screen->pool_buffers,
 485                      sizeof(struct r300_resource), 64,
 486                      UTIL_SLAB_SINGLETHREADED);
 487
 488     r300screen->rws = rws;
 489     r300screen->screen.winsys = (struct pipe_winsys*)rws;
 490     r300screen->screen.destroy = r300_destroy_screen;
 491     r300screen->screen.get_name = r300_get_name;
 492     r300screen->screen.get_vendor = r300_get_vendor;
 493     r300screen->screen.get_param = r300_get_param;
 494     r300screen->screen.get_shader_param = r300_get_shader_param;
 495     r300screen->screen.get_paramf = r300_get_paramf;
 496     r300screen->screen.is_format_supported = r300_is_format_supported;
 497     r300screen->screen.context_create = r300_create_context;
 498
 499     r300screen->screen.fence_reference = r300_fence_reference;
 500     r300screen->screen.fence_signalled = r300_fence_signalled;
 501     r300screen->screen.fence_finish = r300_fence_finish;
 502
 503     r300_init_screen_resource_functions(r300screen);
 504
 505     util_format_s3tc_init();
 506
 507     return &r300screen->screen;
 508 }