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_TGSI_CONT_SUPPORTED:
 124         case PIPE_CAP_INDEP_BLEND_ENABLE:
 125         case PIPE_CAP_INDEP_BLEND_FUNC:
 126             return 0;
 127
 128         /* Texturing. */
 129         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
 130         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 131             return r300screen->caps.num_tex_units;
 132         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 133             return 0;
 134         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 135         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 136         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 137             /* 13 == 4096, 12 == 2048 */
 138             return is_r500 ? 13 : 12;
 139
 140         /* Render targets. */
 141         case PIPE_CAP_MAX_RENDER_TARGETS:
 142             return 4;
 143
 144         /* General shader limits and features. */
 145         case PIPE_CAP_SM3:
 146             return is_r500 ? 1 : 0;
 147         case PIPE_CAP_MAX_CONST_BUFFERS:
 148             return 1;
 149         case PIPE_CAP_MAX_CONST_BUFFER_SIZE:
 150             return 256;
 151
 152         case PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATE:
 153             return 1;
 154
 155         /* Fragment coordinate conventions. */
 156         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 157         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 158             return 1;
 159         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 160         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 161             return 0;
 162
 163         /* Fragment shader limits. */
 164         case PIPE_CAP_MAX_FS_INSTRUCTIONS:
 165             return is_r500 || is_r400 ? 512 : 96;
 166         case PIPE_CAP_MAX_FS_ALU_INSTRUCTIONS:
 167             return is_r500 || is_r400 ? 512 : 64;
 168         case PIPE_CAP_MAX_FS_TEX_INSTRUCTIONS:
 169             return is_r500 || is_r400 ? 512 : 32;
 170         case PIPE_CAP_MAX_FS_TEX_INDIRECTIONS:
 171             return is_r500 ? 511 : 4;
 172         case PIPE_CAP_MAX_FS_CONTROL_FLOW_DEPTH:
 173             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 174         case PIPE_CAP_MAX_FS_INPUTS:
 175             /* 2 colors + 8 texcoords are always supported
 176              * (minus fog and wpos).
 177              *
 178              * R500 has the ability to turn 3rd and 4th color into
 179              * additional texcoords but there is no two-sided color
 180              * selection then. However the facing bit can be used instead. */
 181             return 10;
 182         case PIPE_CAP_MAX_FS_CONSTS:
 183             return is_r500 ? 256 : 32;
 184         case PIPE_CAP_MAX_FS_TEMPS:
 185             return is_r500 ? 128 : is_r400 ? 64 : 32;
 186         case PIPE_CAP_MAX_FS_ADDRS:
 187             return 0;
 188         case PIPE_CAP_MAX_FS_PREDS:
 189             return is_r500 ? 1 : 0;
 190
 191         /* Vertex shader limits. */
 192         case PIPE_CAP_MAX_VS_INSTRUCTIONS:
 193         case PIPE_CAP_MAX_VS_ALU_INSTRUCTIONS:
 194             return is_r500 ? 1024 : 256;
 195         case PIPE_CAP_MAX_VS_TEX_INSTRUCTIONS:
 196         case PIPE_CAP_MAX_VS_TEX_INDIRECTIONS:
 197             return 0;
 198         case PIPE_CAP_MAX_VS_CONTROL_FLOW_DEPTH:
 199             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 200         case PIPE_CAP_MAX_VS_INPUTS:
 201             return 16;
 202         case PIPE_CAP_MAX_VS_CONSTS:
 203             return 256;
 204         case PIPE_CAP_MAX_VS_TEMPS:
 205             return 32;
 206         case PIPE_CAP_MAX_VS_ADDRS:
 207             return 1; /* XXX guessed */
 208         case PIPE_CAP_MAX_VS_PREDS:
 209             return is_r500 ? 4 : 0; /* XXX guessed. */
 210         case PIPE_CAP_GEOMETRY_SHADER4:
 211             return 0;
 212
 213         default:
 214             fprintf(stderr, "r300: Implementation error: Bad param %d\n",
 215                 param);
 216             return 0;
 217     }
 218 }
 219
 220 static float r300_get_paramf(struct pipe_screen* pscreen, enum pipe_cap param)
 221 {
 222     struct r300_screen* r300screen = r300_screen(pscreen);
 223
 224     switch (param) {
 225         case PIPE_CAP_MAX_LINE_WIDTH:
 226         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 227         case PIPE_CAP_MAX_POINT_WIDTH:
 228         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 229             /* The maximum dimensions of the colorbuffer are our practical
 230              * rendering limits. 2048 pixels should be enough for anybody. */
 231             if (r300screen->caps.is_r500) {
 232                 return 4096.0f;
 233             } else if (r300screen->caps.is_r400) {
 234                 return 4021.0f;
 235             } else {
 236                 return 2560.0f;
 237             }
 238         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 239             return 16.0f;
 240         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 241             return 16.0f;
 242         default:
 243             fprintf(stderr, "r300: Implementation error: Bad paramf %d\n",
 244                 param);
 245             return 0.0f;
 246     }
 247 }
 248
 249 static boolean r300_is_format_supported(struct pipe_screen* screen,
 250                                         enum pipe_format format,
 251                                         enum pipe_texture_target target,
 252                                         unsigned sample_count,
 253                                         unsigned usage,
 254                                         unsigned geom_flags)
 255 {
 256     uint32_t retval = 0;
 257     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 258     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 259     boolean is_z24 = format == PIPE_FORMAT_X8Z24_UNORM ||
 260                      format == PIPE_FORMAT_S8_USCALED_Z24_UNORM;
 261     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 262                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 263                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 264                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 265     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 266                        format == PIPE_FORMAT_RGTC1_SNORM;
 267     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 268                        format == PIPE_FORMAT_RGTC2_SNORM;
 269     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 270                             format == PIPE_FORMAT_R16G16_FLOAT ||
 271                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 272                             format == PIPE_FORMAT_R16G16B16A16_FLOAT;
 273
 274     /* Check multisampling support. */
 275     switch (sample_count) {
 276         case 0:
 277         case 1:
 278             break;
 279         case 2:
 280         case 3:
 281         case 4:
 282         case 6:
 283             if (usage != PIPE_BIND_RENDER_TARGET ||
 284                 !util_format_is_rgba8_variant(
 285                     util_format_description(format))) {
 286                 return FALSE;
 287             }
 288             break;
 289         default:
 290             return FALSE;
 291     }
 292
 293     /* Check sampler format support. */
 294     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 295         /* Z24 cannot be sampled from on non-r5xx. */
 296         (is_r500 || !is_z24) &&
 297         /* ATI1N is r5xx-only. */
 298         (is_r500 || !is_ati1n) &&
 299         /* ATI2N is supported on r4xx-r5xx. */
 300         (is_r400 || is_r500 || !is_ati2n) &&
 301         r300_is_sampler_format_supported(format)) {
 302         retval |= PIPE_BIND_SAMPLER_VIEW;
 303     }
 304
 305     /* Check colorbuffer format support. */
 306     if ((usage & (PIPE_BIND_RENDER_TARGET |
 307                   PIPE_BIND_DISPLAY_TARGET |
 308                   PIPE_BIND_SCANOUT |
 309                   PIPE_BIND_SHARED)) &&
 310         /* 2101010 cannot be rendered to on non-r5xx. */
 311         (is_r500 || !is_color2101010) &&
 312         r300_is_colorbuffer_format_supported(format)) {
 313         retval |= usage &
 314             (PIPE_BIND_RENDER_TARGET |
 315              PIPE_BIND_DISPLAY_TARGET |
 316              PIPE_BIND_SCANOUT |
 317              PIPE_BIND_SHARED);
 318     }
 319
 320     /* Check depth-stencil format support. */
 321     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 322         r300_is_zs_format_supported(format)) {
 323         retval |= PIPE_BIND_DEPTH_STENCIL;
 324     }
 325
 326     /* Check vertex buffer format support. */
 327     if (usage & PIPE_BIND_VERTEX_BUFFER &&
 328         /* Half float is supported on >= RV350. */
 329         (is_r400 || is_r500 || !is_half_float) &&
 330         r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
 331         retval |= PIPE_BIND_VERTEX_BUFFER;
 332     }
 333
 334     /* Transfers are always supported. */
 335     if (usage & PIPE_BIND_TRANSFER_READ)
 336         retval |= PIPE_BIND_TRANSFER_READ;
 337     if (usage & PIPE_BIND_TRANSFER_WRITE)
 338         retval |= PIPE_BIND_TRANSFER_WRITE;
 339
 340     return retval == usage;
 341 }
 342
 343 static void r300_destroy_screen(struct pipe_screen* pscreen)
 344 {
 345     struct r300_screen* r300screen = r300_screen(pscreen);
 346     struct r300_winsys_screen *rws = r300_winsys_screen(pscreen);
 347
 348     if (rws)
 349       rws->destroy(rws);
 350
 351     FREE(r300screen);
 352 }
 353
 354 static void r300_fence_reference(struct pipe_screen *screen,
 355                                  struct pipe_fence_handle **ptr,
 356                                  struct pipe_fence_handle *fence)
 357 {
 358     struct r300_fence **oldf = (struct r300_fence**)ptr;
 359     struct r300_fence *newf = (struct r300_fence*)fence;
 360
 361     if (pipe_reference(&(*oldf)->reference, &newf->reference))
 362         FREE(*oldf);
 363
 364     *ptr = fence;
 365 }
 366
 367 static int r300_fence_signalled(struct pipe_screen *screen,
 368                                 struct pipe_fence_handle *fence,
 369                                 unsigned flags)
 370 {
 371     struct r300_fence *rfence = (struct r300_fence*)fence;
 372
 373     return rfence->signalled ? 0 : 1; /* 0 == success */
 374 }
 375
 376 static int r300_fence_finish(struct pipe_screen *screen,
 377                              struct pipe_fence_handle *fence,
 378                              unsigned flags)
 379 {
 380     struct r300_fence *rfence = (struct r300_fence*)fence;
 381
 382     r300_finish(rfence->ctx);
 383     rfence->signalled = TRUE;
 384     return 0; /* 0 == success */
 385 }
 386
 387 struct pipe_screen* r300_screen_create(struct r300_winsys_screen *rws)
 388 {
 389     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 390
 391     if (!r300screen) {
 392         FREE(r300screen);
 393         return NULL;
 394     }
 395
 396     r300screen->caps.pci_id = rws->get_value(rws, R300_VID_PCI_ID);
 397     r300screen->caps.num_frag_pipes = rws->get_value(rws, R300_VID_GB_PIPES);
 398     r300screen->caps.num_z_pipes = rws->get_value(rws, R300_VID_Z_PIPES);
 399
 400     r300_init_debug(r300screen);
 401     r300_parse_chipset(&r300screen->caps);
 402
 403     r300screen->rws = rws;
 404     r300screen->screen.winsys = (struct pipe_winsys*)rws;
 405     r300screen->screen.destroy = r300_destroy_screen;
 406     r300screen->screen.get_name = r300_get_name;
 407     r300screen->screen.get_vendor = r300_get_vendor;
 408     r300screen->screen.get_param = r300_get_param;
 409     r300screen->screen.get_paramf = r300_get_paramf;
 410     r300screen->screen.is_format_supported = r300_is_format_supported;
 411     r300screen->screen.context_create = r300_create_context;
 412
 413     r300screen->screen.fence_reference = r300_fence_reference;
 414     r300screen->screen.fence_signalled = r300_fence_signalled;
 415     r300screen->screen.fence_finish = r300_fence_finish;
 416
 417     r300_init_screen_resource_functions(r300screen);
 418
 419     util_format_s3tc_init();
 420
 421     return &r300screen->screen;
 422 }