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:
 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         case PIPE_CAP_INSTANCED_DRAWING:
 130         case PIPE_CAP_ARRAY_TEXTURES:
 131             return 0;
 132
 133         /* Texturing. */
 134         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
 135         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 136             return r300screen->caps.num_tex_units;
 137         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 138             return 0;
 139         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 140         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 141         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 142             /* 13 == 4096, 12 == 2048 */
 143             return is_r500 ? 13 : 12;
 144
 145         /* Render targets. */
 146         case PIPE_CAP_MAX_RENDER_TARGETS:
 147             return 4;
 148
 149         /* General shader limits and features. */
 150         case PIPE_CAP_SM3:
 151             return is_r500 ? 1 : 0;
 152         /* Fragment coordinate conventions. */
 153         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 154         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 155             return 1;
 156         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 157         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 158             return 0;
 159         default:
 160             debug_printf("r300: Warning: Unknown CAP %d in get_param.\n",
 161                          param);
 162             return 0;
 163     }
 164 }
 165
 166 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 167 {
 168    struct r300_screen* r300screen = r300_screen(pscreen);
 169    boolean is_r400 = r300screen->caps.is_r400;
 170    boolean is_r500 = r300screen->caps.is_r500;
 171
 172    switch (shader)
 173     {
 174     case PIPE_SHADER_FRAGMENT:
 175         switch (param)
 176         {
 177         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 178             return is_r500 || is_r400 ? 512 : 96;
 179         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 180             return is_r500 || is_r400 ? 512 : 64;
 181         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 182             return is_r500 || is_r400 ? 512 : 32;
 183         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 184             return is_r500 ? 511 : 4;
 185         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 186             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 187             /* Fragment shader limits. */
 188         case PIPE_SHADER_CAP_MAX_INPUTS:
 189             /* 2 colors + 8 texcoords are always supported
 190              * (minus fog and wpos).
 191              *
 192              * R500 has the ability to turn 3rd and 4th color into
 193              * additional texcoords but there is no two-sided color
 194              * selection then. However the facing bit can be used instead. */
 195             return 10;
 196         case PIPE_SHADER_CAP_MAX_CONSTS:
 197             return is_r500 ? 256 : 32;
 198         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 199             return 1;
 200         case PIPE_SHADER_CAP_MAX_TEMPS:
 201             return is_r500 ? 128 : is_r400 ? 64 : 32;
 202         case PIPE_SHADER_CAP_MAX_ADDRS:
 203             return 0;
 204         case PIPE_SHADER_CAP_MAX_PREDS:
 205             return is_r500 ? 1 : 0;
 206         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 207             return 1;
 208         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 209         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 210         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 211         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 212             return 0;
 213         case PIPE_SHADER_CAP_SUBROUTINES:
 214             return 0;
 215         }
 216         break;
 217     case PIPE_SHADER_VERTEX:
 218         if (!r300screen->caps.has_tcl) {
 219             return draw_get_shader_param(shader, param);
 220         }
 221
 222         switch (param)
 223         {
 224         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 225         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 226             return is_r500 ? 1024 : 256;
 227         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 228         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 229             return 0;
 230         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 231             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 232         case PIPE_SHADER_CAP_MAX_INPUTS:
 233             return 16;
 234         case PIPE_SHADER_CAP_MAX_CONSTS:
 235             return 256;
 236         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 237             return 1;
 238         case PIPE_SHADER_CAP_MAX_TEMPS:
 239             return 32;
 240         case PIPE_SHADER_CAP_MAX_ADDRS:
 241             return 1; /* XXX guessed */
 242         case PIPE_SHADER_CAP_MAX_PREDS:
 243             return is_r500 ? 4 : 0; /* XXX guessed. */
 244         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 245             return 1;
 246         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 247         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 248         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 249             return 0;
 250         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 251             return 1;
 252         case PIPE_SHADER_CAP_SUBROUTINES:
 253             return 0;
 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     struct r300_winsys_screen *rws = r300_screen(screen)->rws;
 308     uint32_t retval = 0;
 309     boolean drm_2_8_0 = rws->get_value(rws, R300_VID_DRM_2_8_0);
 310     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 311     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 312     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 313                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 314                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 315                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 316     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 317                        format == PIPE_FORMAT_RGTC1_SNORM;
 318     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 319                        format == PIPE_FORMAT_RGTC2_SNORM;
 320     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 321                             format == PIPE_FORMAT_R16G16_FLOAT ||
 322                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 323                             format == PIPE_FORMAT_R16G16B16A16_FLOAT;
 324
 325     /* Check multisampling support. */
 326     switch (sample_count) {
 327         case 0:
 328         case 1:
 329             break;
 330         case 2:
 331         case 3:
 332         case 4:
 333         case 6:
 334             return FALSE;
 335 #if 0
 336             if (usage != PIPE_BIND_RENDER_TARGET ||
 337                 !util_format_is_rgba8_variant(
 338                     util_format_description(format))) {
 339                 return FALSE;
 340             }
 341 #endif
 342             break;
 343         default:
 344             return FALSE;
 345     }
 346
 347     /* Check sampler format support. */
 348     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 349         /* ATI1N is r5xx-only. */
 350         (is_r500 || !is_ati1n) &&
 351         /* ATI2N is supported on r4xx-r5xx. */
 352         (is_r400 || is_r500 || !is_ati2n) &&
 353         r300_is_sampler_format_supported(format)) {
 354         retval |= PIPE_BIND_SAMPLER_VIEW;
 355     }
 356
 357     /* Check colorbuffer format support. */
 358     if ((usage & (PIPE_BIND_RENDER_TARGET |
 359                   PIPE_BIND_DISPLAY_TARGET |
 360                   PIPE_BIND_SCANOUT |
 361                   PIPE_BIND_SHARED)) &&
 362         /* 2101010 cannot be rendered to on non-r5xx. */
 363         (!is_color2101010 || (is_r500 && drm_2_8_0)) &&
 364         r300_is_colorbuffer_format_supported(format)) {
 365         retval |= usage &
 366             (PIPE_BIND_RENDER_TARGET |
 367              PIPE_BIND_DISPLAY_TARGET |
 368              PIPE_BIND_SCANOUT |
 369              PIPE_BIND_SHARED);
 370     }
 371
 372     /* Check depth-stencil format support. */
 373     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 374         r300_is_zs_format_supported(format)) {
 375         retval |= PIPE_BIND_DEPTH_STENCIL;
 376     }
 377
 378     /* Check vertex buffer format support. */
 379     if (usage & PIPE_BIND_VERTEX_BUFFER &&
 380         /* Half float is supported on >= RV350. */
 381         (is_r400 || is_r500 || !is_half_float) &&
 382         r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
 383         retval |= PIPE_BIND_VERTEX_BUFFER;
 384     }
 385
 386     /* Transfers are always supported. */
 387     if (usage & PIPE_BIND_TRANSFER_READ)
 388         retval |= PIPE_BIND_TRANSFER_READ;
 389     if (usage & PIPE_BIND_TRANSFER_WRITE)
 390         retval |= PIPE_BIND_TRANSFER_WRITE;
 391
 392     return retval == usage;
 393 }
 394
 395 static void r300_destroy_screen(struct pipe_screen* pscreen)
 396 {
 397     struct r300_screen* r300screen = r300_screen(pscreen);
 398     struct r300_winsys_screen *rws = r300_winsys_screen(pscreen);
 399
 400     util_slab_destroy(&r300screen->pool_buffers);
 401
 402     if (rws)
 403       rws->destroy(rws);
 404
 405     FREE(r300screen);
 406 }
 407
 408 static void r300_fence_reference(struct pipe_screen *screen,
 409                                  struct pipe_fence_handle **ptr,
 410                                  struct pipe_fence_handle *fence)
 411 {
 412     struct r300_fence **oldf = (struct r300_fence**)ptr;
 413     struct r300_fence *newf = (struct r300_fence*)fence;
 414
 415     if (pipe_reference(&(*oldf)->reference, &newf->reference))
 416         FREE(*oldf);
 417
 418     *ptr = fence;
 419 }
 420
 421 static int r300_fence_signalled(struct pipe_screen *screen,
 422                                 struct pipe_fence_handle *fence,
 423                                 unsigned flags)
 424 {
 425     struct r300_fence *rfence = (struct r300_fence*)fence;
 426
 427     return rfence->signalled ? 0 : 1; /* 0 == success */
 428 }
 429
 430 static int r300_fence_finish(struct pipe_screen *screen,
 431                              struct pipe_fence_handle *fence,
 432                              unsigned flags)
 433 {
 434     struct r300_fence *rfence = (struct r300_fence*)fence;
 435
 436     r300_finish(rfence->ctx);
 437     rfence->signalled = TRUE;
 438     return 0; /* 0 == success */
 439 }
 440
 441 struct pipe_screen* r300_screen_create(struct r300_winsys_screen *rws)
 442 {
 443     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 444
 445     if (!r300screen) {
 446         FREE(r300screen);
 447         return NULL;
 448     }
 449
 450     r300screen->caps.pci_id = rws->get_value(rws, R300_VID_PCI_ID);
 451     r300screen->caps.num_frag_pipes = rws->get_value(rws, R300_VID_GB_PIPES);
 452     r300screen->caps.num_z_pipes = rws->get_value(rws, R300_VID_Z_PIPES);
 453
 454     r300_init_debug(r300screen);
 455     r300_parse_chipset(&r300screen->caps);
 456
 457     if (SCREEN_DBG_ON(r300screen, DBG_NO_ZMASK))
 458         r300screen->caps.zmask_ram = 0;
 459     if (SCREEN_DBG_ON(r300screen, DBG_NO_HIZ))
 460         r300screen->caps.hiz_ram = 0;
 461
 462     r300screen->caps.index_bias_supported =
 463             r300screen->caps.is_r500 &&
 464             rws->get_value(rws, R300_VID_DRM_2_3_0);
 465
 466     util_slab_create(&r300screen->pool_buffers,
 467                      sizeof(struct r300_resource), 64,
 468                      UTIL_SLAB_SINGLETHREADED);
 469
 470     r300screen->rws = rws;
 471     r300screen->screen.winsys = (struct pipe_winsys*)rws;
 472     r300screen->screen.destroy = r300_destroy_screen;
 473     r300screen->screen.get_name = r300_get_name;
 474     r300screen->screen.get_vendor = r300_get_vendor;
 475     r300screen->screen.get_param = r300_get_param;
 476     r300screen->screen.get_shader_param = r300_get_shader_param;
 477     r300screen->screen.get_paramf = r300_get_paramf;
 478     r300screen->screen.is_format_supported = r300_is_format_supported;
 479     r300screen->screen.context_create = r300_create_context;
 480
 481     r300screen->screen.fence_reference = r300_fence_reference;
 482     r300screen->screen.fence_signalled = r300_fence_signalled;
 483     r300screen->screen.fence_finish = r300_fence_finish;
 484
 485     r300_init_screen_resource_functions(r300screen);
 486
 487     util_format_s3tc_init();
 488
 489     return &r300screen->screen;
 490 }