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_r400 = r300screen->caps.is_r400;
  87     boolean is_r500 = r300screen->caps.is_r500;
  88
  89     /* XXX extended shader capabilities of r400 unimplemented */
  90     is_r400 = FALSE;
  91
  92     switch (param) {
  93         /* Supported features (boolean caps). */
  94         case PIPE_CAP_NPOT_TEXTURES:
  95         case PIPE_CAP_TWO_SIDED_STENCIL:
  96         case PIPE_CAP_GLSL:
  97             /* I'll be frank. This is a lie.
  98              *
  99              * We don't truly support GLSL on any of this driver's chipsets.
 100              * To be fair, no chipset supports the full GLSL specification
 101              * to the best of our knowledge, but some of the less esoteric
 102              * features are still missing here.
 103              *
 104              * Rather than cripple ourselves intentionally, I'm going to set
 105              * this flag, and as Gallium's interface continues to change, I
 106              * hope that this single monolithic GLSL enable can slowly get
 107              * split down into many different pieces and the state tracker
 108              * will handle fallbacks transparently, like it should.
 109              *
 110              * ~ C.
 111              */
 112         case PIPE_CAP_ANISOTROPIC_FILTER:
 113         case PIPE_CAP_POINT_SPRITE:
 114         case PIPE_CAP_OCCLUSION_QUERY:
 115         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 116         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 117         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 118         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 119         case PIPE_CAP_TEXTURE_SWIZZLE:
 120             return 1;
 121
 122         /* Unsupported features (boolean caps). */
 123         case PIPE_CAP_TIMER_QUERY:
 124         case PIPE_CAP_DUAL_SOURCE_BLEND:
 125         case PIPE_CAP_INDEP_BLEND_ENABLE:
 126         case PIPE_CAP_INDEP_BLEND_FUNC:
 127         case PIPE_CAP_DEPTH_CLAMP: /* XXX implemented, but breaks Regnum Online */
 128         case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 129         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 130         case PIPE_CAP_STREAM_OUTPUT:
 131         case PIPE_CAP_PRIMITIVE_RESTART:
 132             return 0;
 133
 134         /* Texturing. */
 135         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
 136         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 137             return r300screen->caps.num_tex_units;
 138         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 139             return 0;
 140         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 141         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 142         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 143             /* 13 == 4096, 12 == 2048 */
 144             return is_r500 ? 13 : 12;
 145
 146         /* Render targets. */
 147         case PIPE_CAP_MAX_RENDER_TARGETS:
 148             return 4;
 149
 150         /* General shader limits and features. */
 151         case PIPE_CAP_SM3:
 152             return is_r500 ? 1 : 0;
 153         /* Fragment coordinate conventions. */
 154         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 155         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 156             return 1;
 157         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 158         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 159             return 0;
 160         default:
 161             debug_printf("r300: Warning: Unknown CAP %d in get_param.\n",
 162                          param);
 163             return 0;
 164     }
 165 }
 166
 167 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 168 {
 169    struct r300_screen* r300screen = r300_screen(pscreen);
 170    boolean is_r400 = r300screen->caps.is_r400;
 171    boolean is_r500 = r300screen->caps.is_r500;
 172
 173    /* XXX extended shader capabilities of r400 unimplemented */
 174    is_r400 = FALSE;
 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         }
 218         break;
 219     case PIPE_SHADER_VERTEX:
 220         if (!r300screen->caps.has_tcl) {
 221             return draw_get_shader_param(shader, param);
 222         }
 223
 224         switch (param)
 225         {
 226         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 227         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 228             return is_r500 ? 1024 : 256;
 229         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 230         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 231             return 0;
 232         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 233             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 234         case PIPE_SHADER_CAP_MAX_INPUTS:
 235             return 16;
 236         case PIPE_SHADER_CAP_MAX_CONSTS:
 237             return 256;
 238         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 239             return 1;
 240         case PIPE_SHADER_CAP_MAX_TEMPS:
 241             return 32;
 242         case PIPE_SHADER_CAP_MAX_ADDRS:
 243             return 1; /* XXX guessed */
 244         case PIPE_SHADER_CAP_MAX_PREDS:
 245             return is_r500 ? 4 : 0; /* XXX guessed. */
 246         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 247             return 1;
 248         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 249         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 250         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 251             return 0;
 252         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 253             return 1;
 254         default:
 255             break;
 256         }
 257         break;
 258     default:
 259         break;
 260     }
 261     return 0;
 262 }
 263
 264 static float r300_get_paramf(struct pipe_screen* pscreen, enum pipe_cap param)
 265 {
 266     struct r300_screen* r300screen = r300_screen(pscreen);
 267
 268     switch (param) {
 269         case PIPE_CAP_MAX_LINE_WIDTH:
 270         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 271         case PIPE_CAP_MAX_POINT_WIDTH:
 272         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 273             /* The maximum dimensions of the colorbuffer are our practical
 274              * rendering limits. 2048 pixels should be enough for anybody. */
 275             if (r300screen->caps.is_r500) {
 276                 return 4096.0f;
 277             } else if (r300screen->caps.is_r400) {
 278                 return 4021.0f;
 279             } else {
 280                 return 2560.0f;
 281             }
 282         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 283             return 16.0f;
 284         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 285             return 16.0f;
 286         case PIPE_CAP_GUARD_BAND_LEFT:
 287         case PIPE_CAP_GUARD_BAND_TOP:
 288         case PIPE_CAP_GUARD_BAND_RIGHT:
 289         case PIPE_CAP_GUARD_BAND_BOTTOM:
 290             /* XXX I don't know what these should be but the least we can do is
 291              * silence the potential error message */
 292             return 0.0f;
 293         default:
 294             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 295                          param);
 296             return 0.0f;
 297     }
 298 }
 299
 300 static boolean r300_is_format_supported(struct pipe_screen* screen,
 301                                         enum pipe_format format,
 302                                         enum pipe_texture_target target,
 303                                         unsigned sample_count,
 304                                         unsigned usage,
 305                                         unsigned geom_flags)
 306 {
 307     uint32_t retval = 0;
 308     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 309     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 310     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 311                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 312                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 313                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 314     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 315                        format == PIPE_FORMAT_RGTC1_SNORM;
 316     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 317                        format == PIPE_FORMAT_RGTC2_SNORM;
 318     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 319                             format == PIPE_FORMAT_R16G16_FLOAT ||
 320                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 321                             format == PIPE_FORMAT_R16G16B16A16_FLOAT;
 322
 323     /* Check multisampling support. */
 324     switch (sample_count) {
 325         case 0:
 326         case 1:
 327             break;
 328         case 2:
 329         case 3:
 330         case 4:
 331         case 6:
 332             return FALSE;
 333 #if 0
 334             if (usage != PIPE_BIND_RENDER_TARGET ||
 335                 !util_format_is_rgba8_variant(
 336                     util_format_description(format))) {
 337                 return FALSE;
 338             }
 339 #endif
 340             break;
 341         default:
 342             return FALSE;
 343     }
 344
 345     /* Check sampler format support. */
 346     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 347         /* ATI1N is r5xx-only. */
 348         (is_r500 || !is_ati1n) &&
 349         /* ATI2N is supported on r4xx-r5xx. */
 350         (is_r400 || is_r500 || !is_ati2n) &&
 351         r300_is_sampler_format_supported(format)) {
 352         retval |= PIPE_BIND_SAMPLER_VIEW;
 353     }
 354
 355     /* Check colorbuffer format support. */
 356     if ((usage & (PIPE_BIND_RENDER_TARGET |
 357                   PIPE_BIND_DISPLAY_TARGET |
 358                   PIPE_BIND_SCANOUT |
 359                   PIPE_BIND_SHARED)) &&
 360         /* 2101010 cannot be rendered to on non-r5xx. */
 361         (is_r500 || !is_color2101010) &&
 362         r300_is_colorbuffer_format_supported(format)) {
 363         retval |= usage &
 364             (PIPE_BIND_RENDER_TARGET |
 365              PIPE_BIND_DISPLAY_TARGET |
 366              PIPE_BIND_SCANOUT |
 367              PIPE_BIND_SHARED);
 368     }
 369
 370     /* Check depth-stencil format support. */
 371     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 372         r300_is_zs_format_supported(format)) {
 373         retval |= PIPE_BIND_DEPTH_STENCIL;
 374     }
 375
 376     /* Check vertex buffer format support. */
 377     if (usage & PIPE_BIND_VERTEX_BUFFER &&
 378         /* Half float is supported on >= RV350. */
 379         (is_r400 || is_r500 || !is_half_float) &&
 380         r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
 381         retval |= PIPE_BIND_VERTEX_BUFFER;
 382     }
 383
 384     /* Transfers are always supported. */
 385     if (usage & PIPE_BIND_TRANSFER_READ)
 386         retval |= PIPE_BIND_TRANSFER_READ;
 387     if (usage & PIPE_BIND_TRANSFER_WRITE)
 388         retval |= PIPE_BIND_TRANSFER_WRITE;
 389
 390     return retval == usage;
 391 }
 392
 393 static void r300_destroy_screen(struct pipe_screen* pscreen)
 394 {
 395     struct r300_screen* r300screen = r300_screen(pscreen);
 396     struct r300_winsys_screen *rws = r300_winsys_screen(pscreen);
 397
 398     util_mempool_destroy(&r300screen->pool_buffers);
 399
 400     if (rws)
 401       rws->destroy(rws);
 402
 403     FREE(r300screen);
 404 }
 405
 406 static void r300_fence_reference(struct pipe_screen *screen,
 407                                  struct pipe_fence_handle **ptr,
 408                                  struct pipe_fence_handle *fence)
 409 {
 410     struct r300_fence **oldf = (struct r300_fence**)ptr;
 411     struct r300_fence *newf = (struct r300_fence*)fence;
 412
 413     if (pipe_reference(&(*oldf)->reference, &newf->reference))
 414         FREE(*oldf);
 415
 416     *ptr = fence;
 417 }
 418
 419 static int r300_fence_signalled(struct pipe_screen *screen,
 420                                 struct pipe_fence_handle *fence,
 421                                 unsigned flags)
 422 {
 423     struct r300_fence *rfence = (struct r300_fence*)fence;
 424
 425     return rfence->signalled ? 0 : 1; /* 0 == success */
 426 }
 427
 428 static int r300_fence_finish(struct pipe_screen *screen,
 429                              struct pipe_fence_handle *fence,
 430                              unsigned flags)
 431 {
 432     struct r300_fence *rfence = (struct r300_fence*)fence;
 433
 434     r300_finish(rfence->ctx);
 435     rfence->signalled = TRUE;
 436     return 0; /* 0 == success */
 437 }
 438
 439 struct pipe_screen* r300_screen_create(struct r300_winsys_screen *rws)
 440 {
 441     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 442
 443     if (!r300screen) {
 444         FREE(r300screen);
 445         return NULL;
 446     }
 447
 448     r300screen->caps.pci_id = rws->get_value(rws, R300_VID_PCI_ID);
 449     r300screen->caps.num_frag_pipes = rws->get_value(rws, R300_VID_GB_PIPES);
 450     r300screen->caps.num_z_pipes = rws->get_value(rws, R300_VID_Z_PIPES);
 451
 452     r300_init_debug(r300screen);
 453     r300_parse_chipset(&r300screen->caps);
 454
 455     util_mempool_create(&r300screen->pool_buffers,
 456                         sizeof(struct r300_buffer), 64,
 457                         UTIL_MEMPOOL_SINGLETHREADED);
 458
 459     r300screen->rws = rws;
 460     r300screen->screen.winsys = (struct pipe_winsys*)rws;
 461     r300screen->screen.destroy = r300_destroy_screen;
 462     r300screen->screen.get_name = r300_get_name;
 463     r300screen->screen.get_vendor = r300_get_vendor;
 464     r300screen->screen.get_param = r300_get_param;
 465     r300screen->screen.get_shader_param = r300_get_shader_param;
 466     r300screen->screen.get_paramf = r300_get_paramf;
 467     r300screen->screen.is_format_supported = r300_is_format_supported;
 468     r300screen->screen.context_create = r300_create_context;
 469
 470     r300screen->screen.fence_reference = r300_fence_reference;
 471     r300screen->screen.fence_signalled = r300_fence_signalled;
 472     r300screen->screen.fence_finish = r300_fence_finish;
 473
 474     r300_init_screen_resource_functions(r300screen);
 475
 476     util_format_s3tc_init();
 477
 478     return &r300screen->screen;
 479 }