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
  34 /* Return the identifier behind whom the brave coders responsible for this
  35  * amalgamation of code, sweat, and duct tape, routinely obscure their names.
  36  *
  37  * ...I should have just put "Corbin Simpson", but I'm not that cool.
  38  *
  39  * (Or egotistical. Yet.) */
  40 static const char* r300_get_vendor(struct pipe_screen* pscreen)
  41 {
  42     return "X.Org R300 Project";
  43 }
  44
  45 static const char* chip_families[] = {
  46     "R300",
  47     "R350",
  48     "R360",
  49     "RV350",
  50     "RV370",
  51     "RV380",
  52     "R420",
  53     "R423",
  54     "R430",
  55     "R480",
  56     "R481",
  57     "RV410",
  58     "RS400",
  59     "RC410",
  60     "RS480",
  61     "RS482",
  62     "RS600",
  63     "RS690",
  64     "RS740",
  65     "RV515",
  66     "R520",
  67     "RV530",
  68     "R580",
  69     "RV560",
  70     "RV570"
  71 };
  72
  73 static const char* r300_get_name(struct pipe_screen* pscreen)
  74 {
  75     struct r300_screen* r300screen = r300_screen(pscreen);
  76
  77     return chip_families[r300screen->caps.family];
  78 }
  79
  80 static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
  81 {
  82     struct r300_screen* r300screen = r300_screen(pscreen);
  83     boolean is_r400 = r300screen->caps.is_r400;
  84     boolean is_r500 = r300screen->caps.is_r500;
  85
  86     /* XXX extended shader capabilities of r400 unimplemented */
  87     is_r400 = FALSE;
  88
  89     switch (param) {
  90         /* Supported features (boolean caps). */
  91         case PIPE_CAP_NPOT_TEXTURES:
  92         case PIPE_CAP_TWO_SIDED_STENCIL:
  93         case PIPE_CAP_GLSL:
  94             /* I'll be frank. This is a lie.
  95              *
  96              * We don't truly support GLSL on any of this driver's chipsets.
  97              * To be fair, no chipset supports the full GLSL specification
  98              * to the best of our knowledge, but some of the less esoteric
  99              * features are still missing here.
 100              *
 101              * Rather than cripple ourselves intentionally, I'm going to set
 102              * this flag, and as Gallium's interface continues to change, I
 103              * hope that this single monolithic GLSL enable can slowly get
 104              * split down into many different pieces and the state tracker
 105              * will handle fallbacks transparently, like it should.
 106              *
 107              * ~ C.
 108              */
 109         case PIPE_CAP_ANISOTROPIC_FILTER:
 110         case PIPE_CAP_POINT_SPRITE:
 111         case PIPE_CAP_OCCLUSION_QUERY:
 112         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 113         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 114         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 115         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 116         case PIPE_CAP_TEXTURE_SWIZZLE:
 117             return 1;
 118
 119         /* Unsupported features (boolean caps). */
 120         case PIPE_CAP_TIMER_QUERY:
 121         case PIPE_CAP_DUAL_SOURCE_BLEND:
 122         case PIPE_CAP_TGSI_CONT_SUPPORTED:
 123         case PIPE_CAP_INDEP_BLEND_ENABLE:
 124         case PIPE_CAP_INDEP_BLEND_FUNC:
 125             return 0;
 126
 127         /* Texturing. */
 128         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
 129         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 130             return r300screen->caps.num_tex_units;
 131         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 132             return 0;
 133         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 134         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 135         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 136             /* 13 == 4096, 12 == 2048 */
 137             return is_r500 ? 13 : 12;
 138
 139         /* Render targets. */
 140         case PIPE_CAP_MAX_RENDER_TARGETS:
 141             return 4;
 142
 143         /* General shader limits and features. */
 144         case PIPE_CAP_SM3:
 145             return is_r500 ? 1 : 0;
 146         case PIPE_CAP_MAX_CONST_BUFFERS:
 147             return 1;
 148         case PIPE_CAP_MAX_CONST_BUFFER_SIZE:
 149             return 256;
 150
 151         case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 152             return 1;
 153
 154         /* Fragment coordinate conventions. */
 155         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 156         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 157             return 1;
 158         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 159         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 160             return 0;
 161
 162         /* Fragment shader limits. */
 163         case PIPE_CAP_MAX_FS_INSTRUCTIONS:
 164             return is_r500 || is_r400 ? 512 : 96;
 165         case PIPE_CAP_MAX_FS_ALU_INSTRUCTIONS:
 166             return is_r500 || is_r400 ? 512 : 64;
 167         case PIPE_CAP_MAX_FS_TEX_INSTRUCTIONS:
 168             return is_r500 || is_r400 ? 512 : 32;
 169         case PIPE_CAP_MAX_FS_TEX_INDIRECTIONS:
 170             return is_r500 ? 511 : 4;
 171         case PIPE_CAP_MAX_FS_CONTROL_FLOW_DEPTH:
 172             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 173         case PIPE_CAP_MAX_FS_INPUTS:
 174             /* 2 colors + 8 texcoords are always supported
 175              * (minus fog and wpos).
 176              *
 177              * R500 has the ability to turn 3rd and 4th color into
 178              * additional texcoords but there is no two-sided color
 179              * selection then. However the facing bit can be used instead. */
 180             return 10;
 181         case PIPE_CAP_MAX_FS_CONSTS:
 182             return is_r500 ? 256 : 32;
 183         case PIPE_CAP_MAX_FS_TEMPS:
 184             return is_r500 ? 128 : is_r400 ? 64 : 32;
 185         case PIPE_CAP_MAX_FS_ADDRS:
 186             return 0;
 187         case PIPE_CAP_MAX_FS_PREDS:
 188             return is_r500 ? 1 : 0;
 189
 190         /* Vertex shader limits. */
 191         case PIPE_CAP_MAX_VS_INSTRUCTIONS:
 192         case PIPE_CAP_MAX_VS_ALU_INSTRUCTIONS:
 193             return is_r500 ? 1024 : 256;
 194         case PIPE_CAP_MAX_VS_TEX_INSTRUCTIONS:
 195         case PIPE_CAP_MAX_VS_TEX_INDIRECTIONS:
 196             return 0;
 197         case PIPE_CAP_MAX_VS_CONTROL_FLOW_DEPTH:
 198             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 199         case PIPE_CAP_MAX_VS_INPUTS:
 200             return 16;
 201         case PIPE_CAP_MAX_VS_CONSTS:
 202             return 256;
 203         case PIPE_CAP_MAX_VS_TEMPS:
 204             return 32;
 205         case PIPE_CAP_MAX_VS_ADDRS:
 206             return 1; /* XXX guessed */
 207         case PIPE_CAP_MAX_VS_PREDS:
 208             return is_r500 ? 4 : 0; /* XXX guessed. */
 209
 210         default:
 211             fprintf(stderr, "r300: Implementation error: Bad param %d\n",
 212                 param);
 213             return 0;
 214     }
 215 }
 216
 217 static float r300_get_paramf(struct pipe_screen* pscreen, enum pipe_cap param)
 218 {
 219     struct r300_screen* r300screen = r300_screen(pscreen);
 220
 221     switch (param) {
 222         case PIPE_CAP_MAX_LINE_WIDTH:
 223         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 224         case PIPE_CAP_MAX_POINT_WIDTH:
 225         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 226             /* The maximum dimensions of the colorbuffer are our practical
 227              * rendering limits. 2048 pixels should be enough for anybody. */
 228             if (r300screen->caps.is_r500) {
 229                 return 4096.0f;
 230             } else if (r300screen->caps.is_r400) {
 231                 return 4021.0f;
 232             } else {
 233                 return 2560.0f;
 234             }
 235         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 236             return 16.0f;
 237         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 238             return 16.0f;
 239         default:
 240             fprintf(stderr, "r300: Implementation error: Bad paramf %d\n",
 241                 param);
 242             return 0.0f;
 243     }
 244 }
 245
 246 static boolean r300_is_format_supported(struct pipe_screen* screen,
 247                                         enum pipe_format format,
 248                                         enum pipe_texture_target target,
 249                                         unsigned sample_count,
 250                                         unsigned usage,
 251                                         unsigned geom_flags)
 252 {
 253     uint32_t retval = 0;
 254     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 255     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 256     boolean is_rv350 = r300_screen(screen)->caps.is_rv350;
 257     boolean is_z24 = format == PIPE_FORMAT_X8Z24_UNORM ||
 258                      format == PIPE_FORMAT_S8_USCALED_Z24_UNORM;
 259     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 260                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 261                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 262                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 263     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 264                        format == PIPE_FORMAT_RGTC1_SNORM;
 265     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 266                        format == PIPE_FORMAT_RGTC2_SNORM;
 267     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 268                             format == PIPE_FORMAT_R16G16_FLOAT ||
 269                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 270                             format == PIPE_FORMAT_R16G16B16A16_FLOAT;
 271
 272     if (target >= PIPE_MAX_TEXTURE_TYPES) {
 273         fprintf(stderr, "r300: Implementation error: Received bogus texture "
 274             "target %d in %s\n", target, __FUNCTION__);
 275         return FALSE;
 276     }
 277
 278     switch (sample_count) {
 279         case 0:
 280         case 1:
 281             break;
 282         case 2:
 283         case 3:
 284         case 4:
 285         case 6:
 286             if (usage != PIPE_BIND_RENDER_TARGET ||
 287                 !util_format_is_rgba8_variant(
 288                     util_format_description(format))) {
 289                 return FALSE;
 290             }
 291             break;
 292         default:
 293             return FALSE;
 294     }
 295
 296     /* Check sampler format support. */
 297     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 298         /* Z24 cannot be sampled from on non-r5xx. */
 299         (is_r500 || !is_z24) &&
 300         /* ATI1N is r5xx-only. */
 301         (is_r500 || !is_ati1n) &&
 302         /* ATI2N is supported on r4xx-r5xx. */
 303         (is_r400 || is_r500 || !is_ati2n) &&
 304         r300_is_sampler_format_supported(format)) {
 305         retval |= PIPE_BIND_SAMPLER_VIEW;
 306     }
 307
 308     /* Check colorbuffer format support. */
 309     if ((usage & (PIPE_BIND_RENDER_TARGET |
 310                   PIPE_BIND_DISPLAY_TARGET |
 311                   PIPE_BIND_SCANOUT |
 312                   PIPE_BIND_SHARED)) &&
 313         /* 2101010 cannot be rendered to on non-r5xx. */
 314         (is_r500 || !is_color2101010) &&
 315         r300_is_colorbuffer_format_supported(format)) {
 316         retval |= usage &
 317             (PIPE_BIND_RENDER_TARGET |
 318              PIPE_BIND_DISPLAY_TARGET |
 319              PIPE_BIND_SCANOUT |
 320              PIPE_BIND_SHARED);
 321     }
 322
 323     /* Check depth-stencil format support. */
 324     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 325         r300_is_zs_format_supported(format)) {
 326         retval |= PIPE_BIND_DEPTH_STENCIL;
 327     }
 328
 329     /* Check vertex buffer format support. */
 330     if (usage & PIPE_BIND_VERTEX_BUFFER &&
 331         /* Half float is supported on >= RV350. */
 332         (is_rv350 || !is_half_float) &&
 333         r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
 334         retval |= PIPE_BIND_VERTEX_BUFFER;
 335     }
 336
 337     /* Transfers are always supported. */
 338     if (usage & PIPE_BIND_TRANSFER_READ)
 339         retval |= PIPE_BIND_TRANSFER_READ;
 340     if (usage & PIPE_BIND_TRANSFER_WRITE)
 341         retval |= PIPE_BIND_TRANSFER_WRITE;
 342
 343     return retval == usage;
 344 }
 345
 346 static void r300_destroy_screen(struct pipe_screen* pscreen)
 347 {
 348     struct r300_screen* r300screen = r300_screen(pscreen);
 349     struct r300_winsys_screen *rws = r300_winsys_screen(pscreen);
 350
 351     if (rws)
 352       rws->destroy(rws);
 353
 354     FREE(r300screen);
 355 }
 356
 357 static void r300_fence_reference(struct pipe_screen *screen,
 358                                  struct pipe_fence_handle **ptr,
 359                                  struct pipe_fence_handle *fence)
 360 {
 361     struct r300_fence **oldf = (struct r300_fence**)ptr;
 362     struct r300_fence *newf = (struct r300_fence*)fence;
 363
 364     if (pipe_reference(&(*oldf)->reference, &newf->reference))
 365         FREE(*oldf);
 366
 367     *ptr = fence;
 368 }
 369
 370 static int r300_fence_signalled(struct pipe_screen *screen,
 371                                 struct pipe_fence_handle *fence,
 372                                 unsigned flags)
 373 {
 374     struct r300_fence *rfence = (struct r300_fence*)fence;
 375
 376     return rfence->signalled ? 0 : 1; /* 0 == success */
 377 }
 378
 379 static int r300_fence_finish(struct pipe_screen *screen,
 380                              struct pipe_fence_handle *fence,
 381                              unsigned flags)
 382 {
 383     struct r300_fence *rfence = (struct r300_fence*)fence;
 384
 385     r300_finish(rfence->ctx);
 386     rfence->signalled = TRUE;
 387     return 0; /* 0 == success */
 388 }
 389
 390 struct pipe_screen* r300_create_screen(struct r300_winsys_screen *rws)
 391 {
 392     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 393
 394     if (!r300screen) {
 395         FREE(r300screen);
 396         return NULL;
 397     }
 398
 399     r300screen->caps.pci_id = rws->get_value(rws, R300_VID_PCI_ID);
 400     r300screen->caps.num_frag_pipes = rws->get_value(rws, R300_VID_GB_PIPES);
 401     r300screen->caps.num_z_pipes = rws->get_value(rws, R300_VID_Z_PIPES);
 402
 403     r300_init_debug(r300screen);
 404     r300_parse_chipset(&r300screen->caps);
 405
 406     r300screen->rws = rws;
 407     r300screen->screen.winsys = (struct pipe_winsys*)rws;
 408     r300screen->screen.destroy = r300_destroy_screen;
 409     r300screen->screen.get_name = r300_get_name;
 410     r300screen->screen.get_vendor = r300_get_vendor;
 411     r300screen->screen.get_param = r300_get_param;
 412     r300screen->screen.get_paramf = r300_get_paramf;
 413     r300screen->screen.is_format_supported = r300_is_format_supported;
 414     r300screen->screen.context_create = r300_create_context;
 415
 416     r300screen->screen.fence_reference = r300_fence_reference;
 417     r300screen->screen.fence_signalled = r300_fence_signalled;
 418     r300screen->screen.fence_finish = r300_fence_finish;
 419
 420     r300_init_screen_resource_functions(r300screen);
 421
 422     util_format_s3tc_init();
 423
 424     return &r300screen->screen;
 425 }
 426
 427 struct r300_winsys_screen *
 428 r300_winsys_screen(struct pipe_screen *screen)
 429 {
 430     return r300_screen(screen)->rws;
 431 }