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     "R300",
  48     "R350",
  49     "R360",
  50     "RV350",
  51     "RV370",
  52     "RV380",
  53     "R420",
  54     "R423",
  55     "R430",
  56     "R480",
  57     "R481",
  58     "RV410",
  59     "RS400",
  60     "RC410",
  61     "RS480",
  62     "RS482",
  63     "RS600",
  64     "RS690",
  65     "RS740",
  66     "RV515",
  67     "R520",
  68     "RV530",
  69     "R580",
  70     "RV560",
  71     "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             return 0;
 128
 129         /* Texturing. */
 130         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
 131         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 132             return r300screen->caps.num_tex_units;
 133         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 134             return 0;
 135         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 136         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 137         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 138             /* 13 == 4096, 12 == 2048 */
 139             return is_r500 ? 13 : 12;
 140
 141         /* Render targets. */
 142         case PIPE_CAP_MAX_RENDER_TARGETS:
 143             return 4;
 144
 145         /* General shader limits and features. */
 146         case PIPE_CAP_SM3:
 147             return is_r500 ? 1 : 0;
 148         /* Fragment coordinate conventions. */
 149         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 150         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 151             return 1;
 152         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 153         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 154             return 0;
 155         default:
 156             fprintf(stderr, "r300: Implementation error: Bad param %d\n",
 157                 param);
 158             return 0;
 159     }
 160 }
 161
 162 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 163 {
 164    struct r300_screen* r300screen = r300_screen(pscreen);
 165    boolean is_r400 = r300screen->caps.is_r400;
 166    boolean is_r500 = r300screen->caps.is_r500;
 167
 168    /* XXX extended shader capabilities of r400 unimplemented */
 169    is_r400 = FALSE;
 170
 171    switch (shader)
 172     {
 173     case PIPE_SHADER_FRAGMENT:
 174         switch (param)
 175         {
 176         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 177             return is_r500 || is_r400 ? 512 : 96;
 178         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 179             return is_r500 || is_r400 ? 512 : 64;
 180         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 181             return is_r500 || is_r400 ? 512 : 32;
 182         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 183             return is_r500 ? 511 : 4;
 184         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 185             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 186             /* Fragment shader limits. */
 187         case PIPE_SHADER_CAP_MAX_INPUTS:
 188             /* 2 colors + 8 texcoords are always supported
 189              * (minus fog and wpos).
 190              *
 191              * R500 has the ability to turn 3rd and 4th color into
 192              * additional texcoords but there is no two-sided color
 193              * selection then. However the facing bit can be used instead. */
 194             return 10;
 195         case PIPE_SHADER_CAP_MAX_CONSTS:
 196             return is_r500 ? 256 : 32;
 197         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 198             return 1;
 199         case PIPE_SHADER_CAP_MAX_TEMPS:
 200             return is_r500 ? 128 : is_r400 ? 64 : 32;
 201         case PIPE_SHADER_CAP_MAX_ADDRS:
 202             return 0;
 203         case PIPE_SHADER_CAP_MAX_PREDS:
 204             return is_r500 ? 1 : 0;
 205         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 206             return 1;
 207         }
 208         break;
 209     case PIPE_SHADER_VERTEX:
 210         switch (param)
 211         {
 212         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 213         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 214             return is_r500 ? 1024 : 256;
 215         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 216         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 217             return 0;
 218         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 219             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 220         case PIPE_SHADER_CAP_MAX_INPUTS:
 221             return 16;
 222         case PIPE_SHADER_CAP_MAX_CONSTS:
 223             return 256;
 224         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 225             return 1;
 226         case PIPE_SHADER_CAP_MAX_TEMPS:
 227             return 32;
 228         case PIPE_SHADER_CAP_MAX_ADDRS:
 229             return 1; /* XXX guessed */
 230         case PIPE_SHADER_CAP_MAX_PREDS:
 231             return is_r500 ? 4 : 0; /* XXX guessed. */
 232         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 233             return 1;
 234         default:
 235             break;
 236         }
 237         break;
 238     default:
 239         break;
 240     }
 241     return 0;
 242 }
 243
 244 static float r300_get_paramf(struct pipe_screen* pscreen, enum pipe_cap param)
 245 {
 246     struct r300_screen* r300screen = r300_screen(pscreen);
 247
 248     switch (param) {
 249         case PIPE_CAP_MAX_LINE_WIDTH:
 250         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 251         case PIPE_CAP_MAX_POINT_WIDTH:
 252         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 253             /* The maximum dimensions of the colorbuffer are our practical
 254              * rendering limits. 2048 pixels should be enough for anybody. */
 255             if (r300screen->caps.is_r500) {
 256                 return 4096.0f;
 257             } else if (r300screen->caps.is_r400) {
 258                 return 4021.0f;
 259             } else {
 260                 return 2560.0f;
 261             }
 262         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 263             return 16.0f;
 264         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 265             return 16.0f;
 266         default:
 267             fprintf(stderr, "r300: Implementation error: Bad paramf %d\n",
 268                 param);
 269             return 0.0f;
 270     }
 271 }
 272
 273 static boolean r300_is_format_supported(struct pipe_screen* screen,
 274                                         enum pipe_format format,
 275                                         enum pipe_texture_target target,
 276                                         unsigned sample_count,
 277                                         unsigned usage,
 278                                         unsigned geom_flags)
 279 {
 280     uint32_t retval = 0;
 281     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 282     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 283     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 284                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 285                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 286                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 287     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 288                        format == PIPE_FORMAT_RGTC1_SNORM;
 289     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 290                        format == PIPE_FORMAT_RGTC2_SNORM;
 291     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 292                             format == PIPE_FORMAT_R16G16_FLOAT ||
 293                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 294                             format == PIPE_FORMAT_R16G16B16A16_FLOAT;
 295
 296     /* Check multisampling support. */
 297     switch (sample_count) {
 298         case 0:
 299         case 1:
 300             break;
 301         case 2:
 302         case 3:
 303         case 4:
 304         case 6:
 305             return FALSE;
 306 #if 0
 307             if (usage != PIPE_BIND_RENDER_TARGET ||
 308                 !util_format_is_rgba8_variant(
 309                     util_format_description(format))) {
 310                 return FALSE;
 311             }
 312 #endif
 313             break;
 314         default:
 315             return FALSE;
 316     }
 317
 318     /* Check sampler format support. */
 319     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 320         /* ATI1N is r5xx-only. */
 321         (is_r500 || !is_ati1n) &&
 322         /* ATI2N is supported on r4xx-r5xx. */
 323         (is_r400 || is_r500 || !is_ati2n) &&
 324         r300_is_sampler_format_supported(format)) {
 325         retval |= PIPE_BIND_SAMPLER_VIEW;
 326     }
 327
 328     /* Check colorbuffer format support. */
 329     if ((usage & (PIPE_BIND_RENDER_TARGET |
 330                   PIPE_BIND_DISPLAY_TARGET |
 331                   PIPE_BIND_SCANOUT |
 332                   PIPE_BIND_SHARED)) &&
 333         /* 2101010 cannot be rendered to on non-r5xx. */
 334         (is_r500 || !is_color2101010) &&
 335         r300_is_colorbuffer_format_supported(format)) {
 336         retval |= usage &
 337             (PIPE_BIND_RENDER_TARGET |
 338              PIPE_BIND_DISPLAY_TARGET |
 339              PIPE_BIND_SCANOUT |
 340              PIPE_BIND_SHARED);
 341     }
 342
 343     /* Check depth-stencil format support. */
 344     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 345         r300_is_zs_format_supported(format)) {
 346         retval |= PIPE_BIND_DEPTH_STENCIL;
 347     }
 348
 349     /* Check vertex buffer format support. */
 350     if (usage & PIPE_BIND_VERTEX_BUFFER &&
 351         /* Half float is supported on >= RV350. */
 352         (is_r400 || is_r500 || !is_half_float) &&
 353         r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
 354         retval |= PIPE_BIND_VERTEX_BUFFER;
 355     }
 356
 357     /* Transfers are always supported. */
 358     if (usage & PIPE_BIND_TRANSFER_READ)
 359         retval |= PIPE_BIND_TRANSFER_READ;
 360     if (usage & PIPE_BIND_TRANSFER_WRITE)
 361         retval |= PIPE_BIND_TRANSFER_WRITE;
 362
 363     return retval == usage;
 364 }
 365
 366 static void r300_destroy_screen(struct pipe_screen* pscreen)
 367 {
 368     struct r300_screen* r300screen = r300_screen(pscreen);
 369     struct r300_winsys_screen *rws = r300_winsys_screen(pscreen);
 370
 371     util_mempool_destroy(&r300screen->pool_buffers);
 372
 373     if (rws)
 374       rws->destroy(rws);
 375
 376     FREE(r300screen);
 377 }
 378
 379 static void r300_fence_reference(struct pipe_screen *screen,
 380                                  struct pipe_fence_handle **ptr,
 381                                  struct pipe_fence_handle *fence)
 382 {
 383     struct r300_fence **oldf = (struct r300_fence**)ptr;
 384     struct r300_fence *newf = (struct r300_fence*)fence;
 385
 386     if (pipe_reference(&(*oldf)->reference, &newf->reference))
 387         FREE(*oldf);
 388
 389     *ptr = fence;
 390 }
 391
 392 static int r300_fence_signalled(struct pipe_screen *screen,
 393                                 struct pipe_fence_handle *fence,
 394                                 unsigned flags)
 395 {
 396     struct r300_fence *rfence = (struct r300_fence*)fence;
 397
 398     return rfence->signalled ? 0 : 1; /* 0 == success */
 399 }
 400
 401 static int r300_fence_finish(struct pipe_screen *screen,
 402                              struct pipe_fence_handle *fence,
 403                              unsigned flags)
 404 {
 405     struct r300_fence *rfence = (struct r300_fence*)fence;
 406
 407     r300_finish(rfence->ctx);
 408     rfence->signalled = TRUE;
 409     return 0; /* 0 == success */
 410 }
 411
 412 struct pipe_screen* r300_screen_create(struct r300_winsys_screen *rws)
 413 {
 414     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 415
 416     if (!r300screen) {
 417         FREE(r300screen);
 418         return NULL;
 419     }
 420
 421     r300screen->caps.pci_id = rws->get_value(rws, R300_VID_PCI_ID);
 422     r300screen->caps.num_frag_pipes = rws->get_value(rws, R300_VID_GB_PIPES);
 423     r300screen->caps.num_z_pipes = rws->get_value(rws, R300_VID_Z_PIPES);
 424
 425     r300_init_debug(r300screen);
 426     r300_parse_chipset(&r300screen->caps);
 427
 428     util_mempool_create(&r300screen->pool_buffers,
 429                         sizeof(struct r300_buffer), 64,
 430                         UTIL_MEMPOOL_SINGLETHREADED);
 431
 432     r300screen->rws = rws;
 433     r300screen->screen.winsys = (struct pipe_winsys*)rws;
 434     r300screen->screen.destroy = r300_destroy_screen;
 435     r300screen->screen.get_name = r300_get_name;
 436     r300screen->screen.get_vendor = r300_get_vendor;
 437     r300screen->screen.get_param = r300_get_param;
 438     r300screen->screen.get_shader_param = r300_get_shader_param;
 439     r300screen->screen.get_paramf = r300_get_paramf;
 440     r300screen->screen.is_format_supported = r300_is_format_supported;
 441     r300screen->screen.context_create = r300_create_context;
 442
 443     r300screen->screen.fence_reference = r300_fence_reference;
 444     r300screen->screen.fence_signalled = r300_fence_signalled;
 445     r300screen->screen.fence_finish = r300_fence_finish;
 446
 447     r300_init_screen_resource_functions(r300screen);
 448
 449     util_format_s3tc_init();
 450
 451     return &r300screen->screen;
 452 }