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
  28 #include "r300_context.h"
  29 #include "r300_texture.h"
  30 #include "r300_screen_buffer.h"
  31 #include "r300_state_inlines.h"
  32 #include "r300_winsys.h"
  33 #include "r300_public.h"
  34
  35 /* Return the identifier behind whom the brave coders responsible for this
  36  * amalgamation of code, sweat, and duct tape, routinely obscure their names.
  37  *
  38  * ...I should have just put "Corbin Simpson", but I'm not that cool.
  39  *
  40  * (Or egotistical. Yet.) */
  41 static const char* r300_get_vendor(struct pipe_screen* pscreen)
  42 {
  43     return "X.Org R300 Project";
  44 }
  45
  46 static const char* chip_families[] = {
  47     "ATI R300",
  48     "ATI R350",
  49     "ATI R360",
  50     "ATI RV350",
  51     "ATI RV370",
  52     "ATI RV380",
  53     "ATI R420",
  54     "ATI R423",
  55     "ATI R430",
  56     "ATI R480",
  57     "ATI R481",
  58     "ATI RV410",
  59     "ATI RS400",
  60     "ATI RC410",
  61     "ATI RS480",
  62     "ATI RS482",
  63     "ATI RS600",
  64     "ATI RS690",
  65     "ATI RS740",
  66     "ATI RV515",
  67     "ATI R520",
  68     "ATI RV530",
  69     "ATI R580",
  70     "ATI RV560",
  71     "ATI RV570"
  72 };
  73
  74 static const char* r300_get_name(struct pipe_screen* pscreen)
  75 {
  76     struct r300_screen* r300screen = r300_screen(pscreen);
  77
  78     return chip_families[r300screen->caps.family];
  79 }
  80
  81 static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
  82 {
  83     struct r300_screen* r300screen = r300_screen(pscreen);
  84     boolean is_r400 = r300screen->caps.is_r400;
  85     boolean is_r500 = r300screen->caps.is_r500;
  86
  87     /* XXX extended shader capabilities of r400 unimplemented */
  88     is_r400 = FALSE;
  89
  90     switch (param) {
  91         /* Supported features (boolean caps). */
  92         case PIPE_CAP_NPOT_TEXTURES:
  93         case PIPE_CAP_TWO_SIDED_STENCIL:
  94         case PIPE_CAP_GLSL:
  95             /* I'll be frank. This is a lie.
  96              *
  97              * We don't truly support GLSL on any of this driver's chipsets.
  98              * To be fair, no chipset supports the full GLSL specification
  99              * to the best of our knowledge, but some of the less esoteric
 100              * features are still missing here.
 101              *
 102              * Rather than cripple ourselves intentionally, I'm going to set
 103              * this flag, and as Gallium's interface continues to change, I
 104              * hope that this single monolithic GLSL enable can slowly get
 105              * split down into many different pieces and the state tracker
 106              * will handle fallbacks transparently, like it should.
 107              *
 108              * ~ C.
 109              */
 110         case PIPE_CAP_ANISOTROPIC_FILTER:
 111         case PIPE_CAP_POINT_SPRITE:
 112         case PIPE_CAP_OCCLUSION_QUERY:
 113         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 114         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 115         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 116         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 117         case PIPE_CAP_TEXTURE_SWIZZLE:
 118             return 1;
 119
 120         /* Unsupported features (boolean caps). */
 121         case PIPE_CAP_TIMER_QUERY:
 122         case PIPE_CAP_DUAL_SOURCE_BLEND:
 123         case PIPE_CAP_INDEP_BLEND_ENABLE:
 124         case PIPE_CAP_INDEP_BLEND_FUNC:
 125         case PIPE_CAP_DEPTH_CLAMP: /* XXX implemented, but breaks Regnum Online */
 126         case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 127         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 128         case PIPE_CAP_STREAM_OUTPUT:
 129         case PIPE_CAP_PRIMITIVE_RESTART:
 130             return 0;
 131
 132         /* Texturing. */
 133         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
 134         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 135             return r300screen->caps.num_tex_units;
 136         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 137             return 0;
 138         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 139         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 140         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 141             /* 13 == 4096, 12 == 2048 */
 142             return is_r500 ? 13 : 12;
 143
 144         /* Render targets. */
 145         case PIPE_CAP_MAX_RENDER_TARGETS:
 146             return 4;
 147
 148         /* General shader limits and features. */
 149         case PIPE_CAP_SM3:
 150             return is_r500 ? 1 : 0;
 151         /* Fragment coordinate conventions. */
 152         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 153         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 154             return 1;
 155         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 156         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 157             return 0;
 158         default:
 159             debug_printf("r300: Warning: Unknown CAP %d in get_param.\n",
 160                          param);
 161             return 0;
 162     }
 163 }
 164
 165 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 166 {
 167    struct r300_screen* r300screen = r300_screen(pscreen);
 168    boolean is_r400 = r300screen->caps.is_r400;
 169    boolean is_r500 = r300screen->caps.is_r500;
 170
 171    /* XXX extended shader capabilities of r400 unimplemented */
 172    is_r400 = FALSE;
 173
 174    switch (shader)
 175     {
 176     case PIPE_SHADER_FRAGMENT:
 177         switch (param)
 178         {
 179         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 180             return is_r500 || is_r400 ? 512 : 96;
 181         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 182             return is_r500 || is_r400 ? 512 : 64;
 183         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 184             return is_r500 || is_r400 ? 512 : 32;
 185         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 186             return is_r500 ? 511 : 4;
 187         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 188             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 189             /* Fragment shader limits. */
 190         case PIPE_SHADER_CAP_MAX_INPUTS:
 191             /* 2 colors + 8 texcoords are always supported
 192              * (minus fog and wpos).
 193              *
 194              * R500 has the ability to turn 3rd and 4th color into
 195              * additional texcoords but there is no two-sided color
 196              * selection then. However the facing bit can be used instead. */
 197             return 10;
 198         case PIPE_SHADER_CAP_MAX_CONSTS:
 199             return is_r500 ? 256 : 32;
 200         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 201             return 1;
 202         case PIPE_SHADER_CAP_MAX_TEMPS:
 203             return is_r500 ? 128 : is_r400 ? 64 : 32;
 204         case PIPE_SHADER_CAP_MAX_ADDRS:
 205             return 0;
 206         case PIPE_SHADER_CAP_MAX_PREDS:
 207             return is_r500 ? 1 : 0;
 208         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 209             return 1;
 210         }
 211         break;
 212     case PIPE_SHADER_VERTEX:
 213         switch (param)
 214         {
 215         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 216         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 217             return is_r500 ? 1024 : 256;
 218         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 219         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 220             return 0;
 221         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 222             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 223         case PIPE_SHADER_CAP_MAX_INPUTS:
 224             return 16;
 225         case PIPE_SHADER_CAP_MAX_CONSTS:
 226             return 256;
 227         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 228             return 1;
 229         case PIPE_SHADER_CAP_MAX_TEMPS:
 230             return 32;
 231         case PIPE_SHADER_CAP_MAX_ADDRS:
 232             return 1; /* XXX guessed */
 233         case PIPE_SHADER_CAP_MAX_PREDS:
 234             return is_r500 ? 4 : 0; /* XXX guessed. */
 235         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 236             return 1;
 237         default:
 238             break;
 239         }
 240         break;
 241     default:
 242         break;
 243     }
 244     return 0;
 245 }
 246
 247 static float r300_get_paramf(struct pipe_screen* pscreen, enum pipe_cap param)
 248 {
 249     struct r300_screen* r300screen = r300_screen(pscreen);
 250
 251     switch (param) {
 252         case PIPE_CAP_MAX_LINE_WIDTH:
 253         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 254         case PIPE_CAP_MAX_POINT_WIDTH:
 255         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 256             /* The maximum dimensions of the colorbuffer are our practical
 257              * rendering limits. 2048 pixels should be enough for anybody. */
 258             if (r300screen->caps.is_r500) {
 259                 return 4096.0f;
 260             } else if (r300screen->caps.is_r400) {
 261                 return 4021.0f;
 262             } else {
 263                 return 2560.0f;
 264             }
 265         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 266             return 16.0f;
 267         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 268             return 16.0f;
 269         default:
 270             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 271                          param);
 272             return 0.0f;
 273     }
 274 }
 275
 276 static boolean r300_is_format_supported(struct pipe_screen* screen,
 277                                         enum pipe_format format,
 278                                         enum pipe_texture_target target,
 279                                         unsigned sample_count,
 280                                         unsigned usage,
 281                                         unsigned geom_flags)
 282 {
 283     uint32_t retval = 0;
 284     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 285     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 286     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 287                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 288                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 289                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 290     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 291                        format == PIPE_FORMAT_RGTC1_SNORM;
 292     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 293                        format == PIPE_FORMAT_RGTC2_SNORM;
 294     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 295                             format == PIPE_FORMAT_R16G16_FLOAT ||
 296                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 297                             format == PIPE_FORMAT_R16G16B16A16_FLOAT;
 298
 299     /* Check multisampling support. */
 300     switch (sample_count) {
 301         case 0:
 302         case 1:
 303             break;
 304         case 2:
 305         case 3:
 306         case 4:
 307         case 6:
 308             return FALSE;
 309 #if 0
 310             if (usage != PIPE_BIND_RENDER_TARGET ||
 311                 !util_format_is_rgba8_variant(
 312                     util_format_description(format))) {
 313                 return FALSE;
 314             }
 315 #endif
 316             break;
 317         default:
 318             return FALSE;
 319     }
 320
 321     /* Check sampler format support. */
 322     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 323         /* ATI1N is r5xx-only. */
 324         (is_r500 || !is_ati1n) &&
 325         /* ATI2N is supported on r4xx-r5xx. */
 326         (is_r400 || is_r500 || !is_ati2n) &&
 327         r300_is_sampler_format_supported(format)) {
 328         retval |= PIPE_BIND_SAMPLER_VIEW;
 329     }
 330
 331     /* Check colorbuffer format support. */
 332     if ((usage & (PIPE_BIND_RENDER_TARGET |
 333                   PIPE_BIND_DISPLAY_TARGET |
 334                   PIPE_BIND_SCANOUT |
 335                   PIPE_BIND_SHARED)) &&
 336         /* 2101010 cannot be rendered to on non-r5xx. */
 337         (is_r500 || !is_color2101010) &&
 338         r300_is_colorbuffer_format_supported(format)) {
 339         retval |= usage &
 340             (PIPE_BIND_RENDER_TARGET |
 341              PIPE_BIND_DISPLAY_TARGET |
 342              PIPE_BIND_SCANOUT |
 343              PIPE_BIND_SHARED);
 344     }
 345
 346     /* Check depth-stencil format support. */
 347     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 348         r300_is_zs_format_supported(format)) {
 349         retval |= PIPE_BIND_DEPTH_STENCIL;
 350     }
 351
 352     /* Check vertex buffer format support. */
 353     if (usage & PIPE_BIND_VERTEX_BUFFER &&
 354         /* Half float is supported on >= RV350. */
 355         (is_r400 || is_r500 || !is_half_float) &&
 356         r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
 357         retval |= PIPE_BIND_VERTEX_BUFFER;
 358     }
 359
 360     /* Transfers are always supported. */
 361     if (usage & PIPE_BIND_TRANSFER_READ)
 362         retval |= PIPE_BIND_TRANSFER_READ;
 363     if (usage & PIPE_BIND_TRANSFER_WRITE)
 364         retval |= PIPE_BIND_TRANSFER_WRITE;
 365
 366     return retval == usage;
 367 }
 368
 369 static void r300_destroy_screen(struct pipe_screen* pscreen)
 370 {
 371     struct r300_screen* r300screen = r300_screen(pscreen);
 372     struct r300_winsys_screen *rws = r300_winsys_screen(pscreen);
 373
 374     util_mempool_destroy(&r300screen->pool_buffers);
 375
 376     if (rws)
 377       rws->destroy(rws);
 378
 379     FREE(r300screen);
 380 }
 381
 382 static void r300_fence_reference(struct pipe_screen *screen,
 383                                  struct pipe_fence_handle **ptr,
 384                                  struct pipe_fence_handle *fence)
 385 {
 386     struct r300_fence **oldf = (struct r300_fence**)ptr;
 387     struct r300_fence *newf = (struct r300_fence*)fence;
 388
 389     if (pipe_reference(&(*oldf)->reference, &newf->reference))
 390         FREE(*oldf);
 391
 392     *ptr = fence;
 393 }
 394
 395 static int r300_fence_signalled(struct pipe_screen *screen,
 396                                 struct pipe_fence_handle *fence,
 397                                 unsigned flags)
 398 {
 399     struct r300_fence *rfence = (struct r300_fence*)fence;
 400
 401     return rfence->signalled ? 0 : 1; /* 0 == success */
 402 }
 403
 404 static int r300_fence_finish(struct pipe_screen *screen,
 405                              struct pipe_fence_handle *fence,
 406                              unsigned flags)
 407 {
 408     struct r300_fence *rfence = (struct r300_fence*)fence;
 409
 410     r300_finish(rfence->ctx);
 411     rfence->signalled = TRUE;
 412     return 0; /* 0 == success */
 413 }
 414
 415 struct pipe_screen* r300_screen_create(struct r300_winsys_screen *rws)
 416 {
 417     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 418
 419     if (!r300screen) {
 420         FREE(r300screen);
 421         return NULL;
 422     }
 423
 424     r300screen->caps.pci_id = rws->get_value(rws, R300_VID_PCI_ID);
 425     r300screen->caps.num_frag_pipes = rws->get_value(rws, R300_VID_GB_PIPES);
 426     r300screen->caps.num_z_pipes = rws->get_value(rws, R300_VID_Z_PIPES);
 427
 428     r300_init_debug(r300screen);
 429     r300_parse_chipset(&r300screen->caps);
 430
 431     util_mempool_create(&r300screen->pool_buffers,
 432                         sizeof(struct r300_buffer), 64,
 433                         UTIL_MEMPOOL_SINGLETHREADED);
 434
 435     r300screen->rws = rws;
 436     r300screen->screen.winsys = (struct pipe_winsys*)rws;
 437     r300screen->screen.destroy = r300_destroy_screen;
 438     r300screen->screen.get_name = r300_get_name;
 439     r300screen->screen.get_vendor = r300_get_vendor;
 440     r300screen->screen.get_param = r300_get_param;
 441     r300screen->screen.get_shader_param = r300_get_shader_param;
 442     r300screen->screen.get_paramf = r300_get_paramf;
 443     r300screen->screen.is_format_supported = r300_is_format_supported;
 444     r300screen->screen.context_create = r300_create_context;
 445
 446     r300screen->screen.fence_reference = r300_fence_reference;
 447     r300screen->screen.fence_signalled = r300_fence_signalled;
 448     r300screen->screen.fence_finish = r300_fence_finish;
 449
 450     r300_init_screen_resource_functions(r300screen);
 451
 452     util_format_s3tc_init();
 453
 454     return &r300screen->screen;
 455 }