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         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 211         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 212         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 213         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 214             return 0;
 215         }
 216         break;
 217     case PIPE_SHADER_VERTEX:
 218         switch (param)
 219         {
 220         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 221         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 222             return is_r500 ? 1024 : 256;
 223         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 224         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 225             return 0;
 226         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 227             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 228         case PIPE_SHADER_CAP_MAX_INPUTS:
 229             return 16;
 230         case PIPE_SHADER_CAP_MAX_CONSTS:
 231             return 256;
 232         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 233             return 1;
 234         case PIPE_SHADER_CAP_MAX_TEMPS:
 235             return 32;
 236         case PIPE_SHADER_CAP_MAX_ADDRS:
 237             return 1; /* XXX guessed */
 238         case PIPE_SHADER_CAP_MAX_PREDS:
 239             return is_r500 ? 4 : 0; /* XXX guessed. */
 240         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 241             return 1;
 242         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 243         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 244         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 245             return 0;
 246         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 247             return 1;
 248         default:
 249             break;
 250         }
 251         break;
 252     default:
 253         break;
 254     }
 255     return 0;
 256 }
 257
 258 static float r300_get_paramf(struct pipe_screen* pscreen, enum pipe_cap param)
 259 {
 260     struct r300_screen* r300screen = r300_screen(pscreen);
 261
 262     switch (param) {
 263         case PIPE_CAP_MAX_LINE_WIDTH:
 264         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 265         case PIPE_CAP_MAX_POINT_WIDTH:
 266         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 267             /* The maximum dimensions of the colorbuffer are our practical
 268              * rendering limits. 2048 pixels should be enough for anybody. */
 269             if (r300screen->caps.is_r500) {
 270                 return 4096.0f;
 271             } else if (r300screen->caps.is_r400) {
 272                 return 4021.0f;
 273             } else {
 274                 return 2560.0f;
 275             }
 276         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 277             return 16.0f;
 278         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 279             return 16.0f;
 280         default:
 281             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 282                          param);
 283             return 0.0f;
 284     }
 285 }
 286
 287 static boolean r300_is_format_supported(struct pipe_screen* screen,
 288                                         enum pipe_format format,
 289                                         enum pipe_texture_target target,
 290                                         unsigned sample_count,
 291                                         unsigned usage,
 292                                         unsigned geom_flags)
 293 {
 294     uint32_t retval = 0;
 295     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 296     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 297     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 298                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 299                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 300                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 301     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 302                        format == PIPE_FORMAT_RGTC1_SNORM;
 303     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 304                        format == PIPE_FORMAT_RGTC2_SNORM;
 305     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 306                             format == PIPE_FORMAT_R16G16_FLOAT ||
 307                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 308                             format == PIPE_FORMAT_R16G16B16A16_FLOAT;
 309
 310     /* Check multisampling support. */
 311     switch (sample_count) {
 312         case 0:
 313         case 1:
 314             break;
 315         case 2:
 316         case 3:
 317         case 4:
 318         case 6:
 319             return FALSE;
 320 #if 0
 321             if (usage != PIPE_BIND_RENDER_TARGET ||
 322                 !util_format_is_rgba8_variant(
 323                     util_format_description(format))) {
 324                 return FALSE;
 325             }
 326 #endif
 327             break;
 328         default:
 329             return FALSE;
 330     }
 331
 332     /* Check sampler format support. */
 333     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 334         /* ATI1N is r5xx-only. */
 335         (is_r500 || !is_ati1n) &&
 336         /* ATI2N is supported on r4xx-r5xx. */
 337         (is_r400 || is_r500 || !is_ati2n) &&
 338         r300_is_sampler_format_supported(format)) {
 339         retval |= PIPE_BIND_SAMPLER_VIEW;
 340     }
 341
 342     /* Check colorbuffer format support. */
 343     if ((usage & (PIPE_BIND_RENDER_TARGET |
 344                   PIPE_BIND_DISPLAY_TARGET |
 345                   PIPE_BIND_SCANOUT |
 346                   PIPE_BIND_SHARED)) &&
 347         /* 2101010 cannot be rendered to on non-r5xx. */
 348         (is_r500 || !is_color2101010) &&
 349         r300_is_colorbuffer_format_supported(format)) {
 350         retval |= usage &
 351             (PIPE_BIND_RENDER_TARGET |
 352              PIPE_BIND_DISPLAY_TARGET |
 353              PIPE_BIND_SCANOUT |
 354              PIPE_BIND_SHARED);
 355     }
 356
 357     /* Check depth-stencil format support. */
 358     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 359         r300_is_zs_format_supported(format)) {
 360         retval |= PIPE_BIND_DEPTH_STENCIL;
 361     }
 362
 363     /* Check vertex buffer format support. */
 364     if (usage & PIPE_BIND_VERTEX_BUFFER &&
 365         /* Half float is supported on >= RV350. */
 366         (is_r400 || is_r500 || !is_half_float) &&
 367         r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
 368         retval |= PIPE_BIND_VERTEX_BUFFER;
 369     }
 370
 371     /* Transfers are always supported. */
 372     if (usage & PIPE_BIND_TRANSFER_READ)
 373         retval |= PIPE_BIND_TRANSFER_READ;
 374     if (usage & PIPE_BIND_TRANSFER_WRITE)
 375         retval |= PIPE_BIND_TRANSFER_WRITE;
 376
 377     return retval == usage;
 378 }
 379
 380 static void r300_destroy_screen(struct pipe_screen* pscreen)
 381 {
 382     struct r300_screen* r300screen = r300_screen(pscreen);
 383     struct r300_winsys_screen *rws = r300_winsys_screen(pscreen);
 384
 385     util_mempool_destroy(&r300screen->pool_buffers);
 386
 387     if (rws)
 388       rws->destroy(rws);
 389
 390     FREE(r300screen);
 391 }
 392
 393 static void r300_fence_reference(struct pipe_screen *screen,
 394                                  struct pipe_fence_handle **ptr,
 395                                  struct pipe_fence_handle *fence)
 396 {
 397     struct r300_fence **oldf = (struct r300_fence**)ptr;
 398     struct r300_fence *newf = (struct r300_fence*)fence;
 399
 400     if (pipe_reference(&(*oldf)->reference, &newf->reference))
 401         FREE(*oldf);
 402
 403     *ptr = fence;
 404 }
 405
 406 static int r300_fence_signalled(struct pipe_screen *screen,
 407                                 struct pipe_fence_handle *fence,
 408                                 unsigned flags)
 409 {
 410     struct r300_fence *rfence = (struct r300_fence*)fence;
 411
 412     return rfence->signalled ? 0 : 1; /* 0 == success */
 413 }
 414
 415 static int r300_fence_finish(struct pipe_screen *screen,
 416                              struct pipe_fence_handle *fence,
 417                              unsigned flags)
 418 {
 419     struct r300_fence *rfence = (struct r300_fence*)fence;
 420
 421     r300_finish(rfence->ctx);
 422     rfence->signalled = TRUE;
 423     return 0; /* 0 == success */
 424 }
 425
 426 struct pipe_screen* r300_screen_create(struct r300_winsys_screen *rws)
 427 {
 428     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 429
 430     if (!r300screen) {
 431         FREE(r300screen);
 432         return NULL;
 433     }
 434
 435     r300screen->caps.pci_id = rws->get_value(rws, R300_VID_PCI_ID);
 436     r300screen->caps.num_frag_pipes = rws->get_value(rws, R300_VID_GB_PIPES);
 437     r300screen->caps.num_z_pipes = rws->get_value(rws, R300_VID_Z_PIPES);
 438
 439     r300_init_debug(r300screen);
 440     r300_parse_chipset(&r300screen->caps);
 441
 442     util_mempool_create(&r300screen->pool_buffers,
 443                         sizeof(struct r300_buffer), 64,
 444                         UTIL_MEMPOOL_SINGLETHREADED);
 445
 446     r300screen->rws = rws;
 447     r300screen->screen.winsys = (struct pipe_winsys*)rws;
 448     r300screen->screen.destroy = r300_destroy_screen;
 449     r300screen->screen.get_name = r300_get_name;
 450     r300screen->screen.get_vendor = r300_get_vendor;
 451     r300screen->screen.get_param = r300_get_param;
 452     r300screen->screen.get_shader_param = r300_get_shader_param;
 453     r300screen->screen.get_paramf = r300_get_paramf;
 454     r300screen->screen.is_format_supported = r300_is_format_supported;
 455     r300screen->screen.context_create = r300_create_context;
 456
 457     r300screen->screen.fence_reference = r300_fence_reference;
 458     r300screen->screen.fence_signalled = r300_fence_signalled;
 459     r300screen->screen.fence_finish = r300_fence_finish;
 460
 461     r300_init_screen_resource_functions(r300screen);
 462
 463     util_format_s3tc_init();
 464
 465     return &r300screen->screen;
 466 }