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             return 1;
 116         case PIPE_CAP_TEXTURE_SWIZZLE:
 117             return util_format_s3tc_enabled ? r300screen->caps.dxtc_swizzle : 1;
 118
 119         /* Unsupported features (boolean caps). */
 120         case PIPE_CAP_TIMER_QUERY:
 121         case PIPE_CAP_DUAL_SOURCE_BLEND:
 122         case PIPE_CAP_INDEP_BLEND_ENABLE:
 123         case PIPE_CAP_INDEP_BLEND_FUNC:
 124         case PIPE_CAP_DEPTH_CLAMP: /* XXX implemented, but breaks Regnum Online */
 125         case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 126         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 127         case PIPE_CAP_STREAM_OUTPUT:
 128         case PIPE_CAP_PRIMITIVE_RESTART:
 129             return 0;
 130
 131         /* Texturing. */
 132         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
 133         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 134             return r300screen->caps.num_tex_units;
 135         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 136             return 0;
 137         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 138         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 139         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 140             /* 13 == 4096, 12 == 2048 */
 141             return is_r500 ? 13 : 12;
 142
 143         /* Render targets. */
 144         case PIPE_CAP_MAX_RENDER_TARGETS:
 145             return 4;
 146
 147         /* General shader limits and features. */
 148         case PIPE_CAP_SM3:
 149             return is_r500 ? 1 : 0;
 150         /* Fragment coordinate conventions. */
 151         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 152         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 153             return 1;
 154         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 155         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 156             return 0;
 157         default:
 158             debug_printf("r300: Warning: Unknown CAP %d in get_param.\n",
 159                          param);
 160             return 0;
 161     }
 162 }
 163
 164 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 165 {
 166    struct r300_screen* r300screen = r300_screen(pscreen);
 167    boolean is_r400 = r300screen->caps.is_r400;
 168    boolean is_r500 = r300screen->caps.is_r500;
 169
 170    switch (shader)
 171     {
 172     case PIPE_SHADER_FRAGMENT:
 173         switch (param)
 174         {
 175         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 176             return is_r500 || is_r400 ? 512 : 96;
 177         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 178             return is_r500 || is_r400 ? 512 : 64;
 179         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 180             return is_r500 || is_r400 ? 512 : 32;
 181         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 182             return is_r500 ? 511 : 4;
 183         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 184             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 185             /* Fragment shader limits. */
 186         case PIPE_SHADER_CAP_MAX_INPUTS:
 187             /* 2 colors + 8 texcoords are always supported
 188              * (minus fog and wpos).
 189              *
 190              * R500 has the ability to turn 3rd and 4th color into
 191              * additional texcoords but there is no two-sided color
 192              * selection then. However the facing bit can be used instead. */
 193             return 10;
 194         case PIPE_SHADER_CAP_MAX_CONSTS:
 195             return is_r500 ? 256 : 32;
 196         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 197             return 1;
 198         case PIPE_SHADER_CAP_MAX_TEMPS:
 199             return is_r500 ? 128 : is_r400 ? 64 : 32;
 200         case PIPE_SHADER_CAP_MAX_ADDRS:
 201             return 0;
 202         case PIPE_SHADER_CAP_MAX_PREDS:
 203             return is_r500 ? 1 : 0;
 204         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 205             return 1;
 206         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 207         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 208         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 209         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 210             return 0;
 211         case PIPE_SHADER_CAP_SUBROUTINES:
 212             return 0;
 213         }
 214         break;
 215     case PIPE_SHADER_VERTEX:
 216         if (!r300screen->caps.has_tcl) {
 217             return draw_get_shader_param(shader, param);
 218         }
 219
 220         switch (param)
 221         {
 222         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 223         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 224             return is_r500 ? 1024 : 256;
 225         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 226         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 227             return 0;
 228         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 229             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 230         case PIPE_SHADER_CAP_MAX_INPUTS:
 231             return 16;
 232         case PIPE_SHADER_CAP_MAX_CONSTS:
 233             return 256;
 234         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 235             return 1;
 236         case PIPE_SHADER_CAP_MAX_TEMPS:
 237             return 32;
 238         case PIPE_SHADER_CAP_MAX_ADDRS:
 239             return 1; /* XXX guessed */
 240         case PIPE_SHADER_CAP_MAX_PREDS:
 241             return is_r500 ? 4 : 0; /* XXX guessed. */
 242         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 243             return 1;
 244         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 245         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 246         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 247             return 0;
 248         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 249             return 1;
 250         case PIPE_SHADER_CAP_SUBROUTINES:
 251             return 0;
 252         default:
 253             break;
 254         }
 255         break;
 256     default:
 257         break;
 258     }
 259     return 0;
 260 }
 261
 262 static float r300_get_paramf(struct pipe_screen* pscreen, enum pipe_cap param)
 263 {
 264     struct r300_screen* r300screen = r300_screen(pscreen);
 265
 266     switch (param) {
 267         case PIPE_CAP_MAX_LINE_WIDTH:
 268         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 269         case PIPE_CAP_MAX_POINT_WIDTH:
 270         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 271             /* The maximum dimensions of the colorbuffer are our practical
 272              * rendering limits. 2048 pixels should be enough for anybody. */
 273             if (r300screen->caps.is_r500) {
 274                 return 4096.0f;
 275             } else if (r300screen->caps.is_r400) {
 276                 return 4021.0f;
 277             } else {
 278                 return 2560.0f;
 279             }
 280         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 281             return 16.0f;
 282         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 283             return 16.0f;
 284         case PIPE_CAP_GUARD_BAND_LEFT:
 285         case PIPE_CAP_GUARD_BAND_TOP:
 286         case PIPE_CAP_GUARD_BAND_RIGHT:
 287         case PIPE_CAP_GUARD_BAND_BOTTOM:
 288             /* XXX I don't know what these should be but the least we can do is
 289              * silence the potential error message */
 290             return 0.0f;
 291         default:
 292             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 293                          param);
 294             return 0.0f;
 295     }
 296 }
 297
 298 static boolean r300_is_format_supported(struct pipe_screen* screen,
 299                                         enum pipe_format format,
 300                                         enum pipe_texture_target target,
 301                                         unsigned sample_count,
 302                                         unsigned usage,
 303                                         unsigned geom_flags)
 304 {
 305     struct r300_winsys_screen *rws = r300_screen(screen)->rws;
 306     uint32_t retval = 0;
 307     boolean drm_2_8_0 = rws->get_value(rws, R300_VID_DRM_2_8_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_color2101010 || (is_r500 && drm_2_8_0)) &&
 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_slab_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     r300screen->caps.index_bias_supported =
 456             r300screen->caps.is_r500 &&
 457             rws->get_value(rws, R300_VID_DRM_2_3_0);
 458
 459     util_slab_create(&r300screen->pool_buffers,
 460                      sizeof(struct r300_buffer), 64,
 461                      UTIL_SLAB_SINGLETHREADED);
 462
 463     r300screen->rws = rws;
 464     r300screen->screen.winsys = (struct pipe_winsys*)rws;
 465     r300screen->screen.destroy = r300_destroy_screen;
 466     r300screen->screen.get_name = r300_get_name;
 467     r300screen->screen.get_vendor = r300_get_vendor;
 468     r300screen->screen.get_param = r300_get_param;
 469     r300screen->screen.get_shader_param = r300_get_shader_param;
 470     r300screen->screen.get_paramf = r300_get_paramf;
 471     r300screen->screen.is_format_supported = r300_is_format_supported;
 472     r300screen->screen.context_create = r300_create_context;
 473
 474     r300screen->screen.fence_reference = r300_fence_reference;
 475     r300screen->screen.fence_signalled = r300_fence_signalled;
 476     r300screen->screen.fence_finish = r300_fence_finish;
 477
 478     r300_init_screen_resource_functions(r300screen);
 479
 480     util_format_s3tc_init();
 481
 482     return &r300screen->screen;
 483 }