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 #include "draw/draw_context.h"
  36
  37 /* Return the identifier behind whom the brave coders responsible for this
  38  * amalgamation of code, sweat, and duct tape, routinely obscure their names.
  39  *
  40  * ...I should have just put "Corbin Simpson", but I'm not that cool.
  41  *
  42  * (Or egotistical. Yet.) */
  43 static const char* r300_get_vendor(struct pipe_screen* pscreen)
  44 {
  45     return "X.Org R300 Project";
  46 }
  47
  48 static const char* chip_families[] = {
  49     "ATI R300",
  50     "ATI R350",
  51     "ATI R360",
  52     "ATI RV350",
  53     "ATI RV370",
  54     "ATI RV380",
  55     "ATI R420",
  56     "ATI R423",
  57     "ATI R430",
  58     "ATI R480",
  59     "ATI R481",
  60     "ATI RV410",
  61     "ATI RS400",
  62     "ATI RC410",
  63     "ATI RS480",
  64     "ATI RS482",
  65     "ATI RS600",
  66     "ATI RS690",
  67     "ATI RS740",
  68     "ATI RV515",
  69     "ATI R520",
  70     "ATI RV530",
  71     "ATI R580",
  72     "ATI RV560",
  73     "ATI RV570"
  74 };
  75
  76 static const char* r300_get_name(struct pipe_screen* pscreen)
  77 {
  78     struct r300_screen* r300screen = r300_screen(pscreen);
  79
  80     return chip_families[r300screen->caps.family];
  81 }
  82
  83 static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
  84 {
  85     struct r300_screen* r300screen = r300_screen(pscreen);
  86     boolean is_r500 = r300screen->caps.is_r500;
  87
  88     switch (param) {
  89         /* Supported features (boolean caps). */
  90         case PIPE_CAP_NPOT_TEXTURES:
  91         case PIPE_CAP_TWO_SIDED_STENCIL:
  92         case PIPE_CAP_GLSL:
  93             /* I'll be frank. This is a lie.
  94              *
  95              * We don't truly support GLSL on any of this driver's chipsets.
  96              * To be fair, no chipset supports the full GLSL specification
  97              * to the best of our knowledge, but some of the less esoteric
  98              * features are still missing here.
  99              *
 100              * Rather than cripple ourselves intentionally, I'm going to set
 101              * this flag, and as Gallium's interface continues to change, I
 102              * hope that this single monolithic GLSL enable can slowly get
 103              * split down into many different pieces and the state tracker
 104              * will handle fallbacks transparently, like it should.
 105              *
 106              * ~ C.
 107              */
 108         case PIPE_CAP_ANISOTROPIC_FILTER:
 109         case PIPE_CAP_POINT_SPRITE:
 110         case PIPE_CAP_OCCLUSION_QUERY:
 111         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 112         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 113         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 114         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 115         case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 116             return 1;
 117         case PIPE_CAP_TEXTURE_SWIZZLE:
 118             return util_format_s3tc_enabled ? r300screen->caps.dxtc_swizzle : 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:
 126         case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 127         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 128         case PIPE_CAP_ARRAY_TEXTURES:
 129             return 0;
 130
 131         /* SWTCL-only features. */
 132         case PIPE_CAP_STREAM_OUTPUT:
 133         case PIPE_CAP_PRIMITIVE_RESTART:
 134         case PIPE_CAP_TGSI_INSTANCEID:
 135             return !r300screen->caps.has_tcl;
 136
 137         /* Texturing. */
 138         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
 139         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 140             return r300screen->caps.num_tex_units;
 141         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 142             return 0;
 143         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 144         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 145         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 146             /* 13 == 4096, 12 == 2048 */
 147             return is_r500 ? 13 : 12;
 148
 149         /* Render targets. */
 150         case PIPE_CAP_MAX_RENDER_TARGETS:
 151             return 4;
 152
 153         /* General shader limits and features. */
 154         case PIPE_CAP_SM3:
 155             return is_r500 ? 1 : 0;
 156         /* Fragment coordinate conventions. */
 157         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 158         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 159             return 1;
 160         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 161         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 162             return 0;
 163         default:
 164             debug_printf("r300: Warning: Unknown CAP %d in get_param.\n",
 165                          param);
 166             return 0;
 167     }
 168 }
 169
 170 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 171 {
 172    struct r300_screen* r300screen = r300_screen(pscreen);
 173    boolean is_r400 = r300screen->caps.is_r400;
 174    boolean is_r500 = r300screen->caps.is_r500;
 175
 176    switch (shader)
 177     {
 178     case PIPE_SHADER_FRAGMENT:
 179         switch (param)
 180         {
 181         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 182             return is_r500 || is_r400 ? 512 : 96;
 183         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 184             return is_r500 || is_r400 ? 512 : 64;
 185         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 186             return is_r500 || is_r400 ? 512 : 32;
 187         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 188             return is_r500 ? 511 : 4;
 189         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 190             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 191             /* Fragment shader limits. */
 192         case PIPE_SHADER_CAP_MAX_INPUTS:
 193             /* 2 colors + 8 texcoords are always supported
 194              * (minus fog and wpos).
 195              *
 196              * R500 has the ability to turn 3rd and 4th color into
 197              * additional texcoords but there is no two-sided color
 198              * selection then. However the facing bit can be used instead. */
 199             return 10;
 200         case PIPE_SHADER_CAP_MAX_CONSTS:
 201             return is_r500 ? 256 : 32;
 202         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 203             return 1;
 204         case PIPE_SHADER_CAP_MAX_TEMPS:
 205             return is_r500 ? 128 : is_r400 ? 64 : 32;
 206         case PIPE_SHADER_CAP_MAX_ADDRS:
 207             return 0;
 208         case PIPE_SHADER_CAP_MAX_PREDS:
 209             return is_r500 ? 1 : 0;
 210         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 211             return 1;
 212         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 213         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 214         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 215         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 216             return 0;
 217         case PIPE_SHADER_CAP_SUBROUTINES:
 218             return 0;
 219         }
 220         break;
 221     case PIPE_SHADER_VERTEX:
 222         if (!r300screen->caps.has_tcl) {
 223             return draw_get_shader_param(shader, param);
 224         }
 225
 226         switch (param)
 227         {
 228         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 229         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 230             return is_r500 ? 1024 : 256;
 231         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 232         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 233             return 0;
 234         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 235             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 236         case PIPE_SHADER_CAP_MAX_INPUTS:
 237             return 16;
 238         case PIPE_SHADER_CAP_MAX_CONSTS:
 239             return 256;
 240         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 241             return 1;
 242         case PIPE_SHADER_CAP_MAX_TEMPS:
 243             return 32;
 244         case PIPE_SHADER_CAP_MAX_ADDRS:
 245             return 1; /* XXX guessed */
 246         case PIPE_SHADER_CAP_MAX_PREDS:
 247             return is_r500 ? 4 : 0; /* XXX guessed. */
 248         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 249             return 1;
 250         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 251         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 252         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 253             return 0;
 254         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 255             return 1;
 256         case PIPE_SHADER_CAP_SUBROUTINES:
 257             return 0;
 258         default:
 259             break;
 260         }
 261         break;
 262     default:
 263         break;
 264     }
 265     return 0;
 266 }
 267
 268 static float r300_get_paramf(struct pipe_screen* pscreen, enum pipe_cap param)
 269 {
 270     struct r300_screen* r300screen = r300_screen(pscreen);
 271
 272     switch (param) {
 273         case PIPE_CAP_MAX_LINE_WIDTH:
 274         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 275         case PIPE_CAP_MAX_POINT_WIDTH:
 276         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 277             /* The maximum dimensions of the colorbuffer are our practical
 278              * rendering limits. 2048 pixels should be enough for anybody. */
 279             if (r300screen->caps.is_r500) {
 280                 return 4096.0f;
 281             } else if (r300screen->caps.is_r400) {
 282                 return 4021.0f;
 283             } else {
 284                 return 2560.0f;
 285             }
 286         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 287             return 16.0f;
 288         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 289             return 16.0f;
 290         case PIPE_CAP_GUARD_BAND_LEFT:
 291         case PIPE_CAP_GUARD_BAND_TOP:
 292         case PIPE_CAP_GUARD_BAND_RIGHT:
 293         case PIPE_CAP_GUARD_BAND_BOTTOM:
 294             /* XXX I don't know what these should be but the least we can do is
 295              * silence the potential error message */
 296             return 0.0f;
 297         default:
 298             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 299                          param);
 300             return 0.0f;
 301     }
 302 }
 303
 304 static boolean r300_is_format_supported(struct pipe_screen* screen,
 305                                         enum pipe_format format,
 306                                         enum pipe_texture_target target,
 307                                         unsigned sample_count,
 308                                         unsigned usage,
 309                                         unsigned geom_flags)
 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 int r300_fence_signalled(struct pipe_screen *screen,
 426                                 struct pipe_fence_handle *fence,
 427                                 unsigned flags)
 428 {
 429     struct r300_winsys_screen *rws = r300_screen(screen)->rws;
 430     struct r300_winsys_bo *rfence = (struct r300_winsys_bo*)fence;
 431
 432     return !rws->buffer_is_busy(rfence) ? 0 : 1; /* 0 == success */
 433 }
 434
 435 static int r300_fence_finish(struct pipe_screen *screen,
 436                              struct pipe_fence_handle *fence,
 437                              unsigned flags)
 438 {
 439     struct r300_winsys_screen *rws = r300_screen(screen)->rws;
 440     struct r300_winsys_bo *rfence = (struct r300_winsys_bo*)fence;
 441
 442     rws->buffer_wait(rfence);
 443     return 0; /* 0 == success */
 444 }
 445
 446 struct pipe_screen* r300_screen_create(struct r300_winsys_screen *rws)
 447 {
 448     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 449
 450     if (!r300screen) {
 451         FREE(r300screen);
 452         return NULL;
 453     }
 454
 455     r300screen->caps.pci_id = rws->get_value(rws, R300_VID_PCI_ID);
 456     r300screen->caps.num_frag_pipes = rws->get_value(rws, R300_VID_GB_PIPES);
 457     r300screen->caps.num_z_pipes = rws->get_value(rws, R300_VID_Z_PIPES);
 458
 459     r300_init_debug(r300screen);
 460     r300_parse_chipset(&r300screen->caps);
 461
 462     if (SCREEN_DBG_ON(r300screen, DBG_NO_ZMASK))
 463         r300screen->caps.zmask_ram = 0;
 464     if (SCREEN_DBG_ON(r300screen, DBG_NO_HIZ))
 465         r300screen->caps.hiz_ram = 0;
 466
 467     pipe_mutex_init(r300screen->num_contexts_mutex);
 468
 469     util_slab_create(&r300screen->pool_buffers,
 470                      sizeof(struct r300_resource), 64,
 471                      UTIL_SLAB_SINGLETHREADED);
 472
 473     r300screen->rws = rws;
 474     r300screen->screen.winsys = (struct pipe_winsys*)rws;
 475     r300screen->screen.destroy = r300_destroy_screen;
 476     r300screen->screen.get_name = r300_get_name;
 477     r300screen->screen.get_vendor = r300_get_vendor;
 478     r300screen->screen.get_param = r300_get_param;
 479     r300screen->screen.get_shader_param = r300_get_shader_param;
 480     r300screen->screen.get_paramf = r300_get_paramf;
 481     r300screen->screen.is_format_supported = r300_is_format_supported;
 482     r300screen->screen.context_create = r300_create_context;
 483
 484     r300screen->screen.fence_reference = r300_fence_reference;
 485     r300screen->screen.fence_signalled = r300_fence_signalled;
 486     r300screen->screen.fence_finish = r300_fence_finish;
 487
 488     r300_init_screen_resource_functions(r300screen);
 489
 490     util_format_s3tc_init();
 491
 492     return &r300screen->screen;
 493 }