src/gallium/drivers/r300/r300_screen.c

   1 /*
   2  * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  22
  23 #include "util/u_inlines.h"
  24 #include "util/u_format.h"
  25 #include "util/u_memory.h"
  26 #include "util/u_simple_screen.h"
  27
  28 #include "r300_context.h"
  29 #include "r300_screen.h"
  30 #include "r300_texture.h"
  31
  32 #include "radeon_winsys.h"
  33 #include "r300_winsys.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, int param)
  82 {
  83     struct r300_screen* r300screen = r300_screen(pscreen);
  84
  85     switch (param) {
  86         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  87         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  88             /* XXX I'm told this goes up to 16 */
  89             return 8;
  90         case PIPE_CAP_NPOT_TEXTURES:
  91             /* XXX enable now to get GL2.1 API,
  92              * figure out later how to emulate this */
  93             return 1;
  94         case PIPE_CAP_TWO_SIDED_STENCIL:
  95             if (r300screen->caps->is_r500) {
  96                 return 1;
  97             } else {
  98                 return 0;
  99             }
 100         case PIPE_CAP_GLSL:
 101             /* I'll be frank. This is a lie.
 102              *
 103              * We don't truly support GLSL on any of this driver's chipsets.
 104              * To be fair, no chipset supports the full GLSL specification
 105              * to the best of our knowledge, but some of the less esoteric
 106              * features are still missing here.
 107              *
 108              * Rather than cripple ourselves intentionally, I'm going to set
 109              * this flag, and as Gallium's interface continues to change, I
 110              * hope that this single monolithic GLSL enable can slowly get
 111              * split down into many different pieces and the state tracker
 112              * will handle fallbacks transparently, like it should.
 113              *
 114              * ~ C.
 115              */
 116             return 1;
 117         case PIPE_CAP_DUAL_SOURCE_BLEND:
 118             return 0;
 119         case PIPE_CAP_ANISOTROPIC_FILTER:
 120             return 1;
 121         case PIPE_CAP_POINT_SPRITE:
 122             return 1;
 123         case PIPE_CAP_MAX_RENDER_TARGETS:
 124             return 4;
 125         case PIPE_CAP_OCCLUSION_QUERY:
 126             return 1;
 127         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 128             return 1;
 129         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 130         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 131         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 132             if (r300screen->caps->is_r500) {
 133                 /* 13 == 4096 */
 134                 return 13;
 135             } else {
 136                 /* 12 == 2048 */
 137                 return 12;
 138             }
 139         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 140             return 1;
 141         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 142             return 1;
 143         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 144             return 0;
 145         case PIPE_CAP_TGSI_CONT_SUPPORTED:
 146             return 0;
 147         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 148             return 1;
 149         case PIPE_CAP_SM3:
 150             if (r300screen->caps->is_r500) {
 151                 return 1;
 152             } else {
 153                 return 0;
 154             }
 155         case PIPE_CAP_INDEP_BLEND_ENABLE:
 156             return 0;
 157         case PIPE_CAP_INDEP_BLEND_FUNC:
 158             return 0;
 159         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 160         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 161             return 1;
 162         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 163         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 164             return 0;
 165         default:
 166             debug_printf("r300: Implementation error: Bad param %d\n",
 167                 param);
 168             return 0;
 169     }
 170 }
 171
 172 static float r300_get_paramf(struct pipe_screen* pscreen, int param)
 173 {
 174     struct r300_screen* r300screen = r300_screen(pscreen);
 175
 176     switch (param) {
 177         case PIPE_CAP_MAX_LINE_WIDTH:
 178         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 179         case PIPE_CAP_MAX_POINT_WIDTH:
 180         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 181             /* The maximum dimensions of the colorbuffer are our practical
 182              * rendering limits. 2048 pixels should be enough for anybody. */
 183             if (r300screen->caps->is_r500) {
 184                 return 4096.0f;
 185             } else if (r300screen->caps->is_r400) {
 186                 return 4021.0f;
 187             } else {
 188                 return 2560.0f;
 189             }
 190         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 191             return 16.0f;
 192         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 193             return 16.0f;
 194         default:
 195             debug_printf("r300: Implementation error: Bad paramf %d\n",
 196                 param);
 197             return 0.0f;
 198     }
 199 }
 200
 201 static boolean r300_is_format_supported(struct pipe_screen* screen,
 202                                         enum pipe_format format,
 203                                         enum pipe_texture_target target,
 204                                         unsigned usage,
 205                                         unsigned geom_flags)
 206 {
 207     uint32_t retval = 0;
 208     boolean is_r500 = r300_screen(screen)->caps->is_r500;
 209
 210     if (target >= PIPE_MAX_TEXTURE_TYPES) {
 211         debug_printf("r300: Implementation error: Received bogus texture "
 212             "target %d in %s\n", target, __FUNCTION__);
 213         return FALSE;
 214     }
 215
 216     switch (format) {
 217         /* Supported formats. */
 218         /* Colorbuffer */
 219         case PIPE_FORMAT_A4R4G4B4_UNORM:
 220         case PIPE_FORMAT_R5G6B5_UNORM:
 221         case PIPE_FORMAT_A1R5G5B5_UNORM:
 222         case PIPE_FORMAT_A8_UNORM:
 223         case PIPE_FORMAT_L8_UNORM:
 224             retval = usage &
 225                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 226                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 227                  PIPE_TEXTURE_USAGE_PRIMARY);
 228             break;
 229
 230         /* Texture */
 231         case PIPE_FORMAT_A8R8G8B8_SRGB:
 232         case PIPE_FORMAT_R8G8B8A8_SRGB:
 233         case PIPE_FORMAT_DXT1_RGB:
 234         case PIPE_FORMAT_DXT1_RGBA:
 235         case PIPE_FORMAT_DXT3_RGBA:
 236         case PIPE_FORMAT_DXT5_RGBA:
 237         case PIPE_FORMAT_YCBCR:
 238         case PIPE_FORMAT_L8_SRGB:
 239         case PIPE_FORMAT_A8L8_SRGB:
 240         case PIPE_FORMAT_A8L8_UNORM:
 241             retval = usage & PIPE_TEXTURE_USAGE_SAMPLER;
 242             break;
 243
 244         /* Colorbuffer or texture */
 245         case PIPE_FORMAT_A8R8G8B8_UNORM:
 246         case PIPE_FORMAT_X8R8G8B8_UNORM:
 247         case PIPE_FORMAT_R8G8B8A8_UNORM:
 248         case PIPE_FORMAT_R8G8B8X8_UNORM:
 249         case PIPE_FORMAT_I8_UNORM:
 250             retval = usage &
 251                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 252                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 253                  PIPE_TEXTURE_USAGE_PRIMARY |
 254                  PIPE_TEXTURE_USAGE_SAMPLER);
 255             break;
 256
 257         /* Z buffer or texture */
 258         case PIPE_FORMAT_Z16_UNORM:
 259             retval = usage &
 260                 (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
 261                  PIPE_TEXTURE_USAGE_SAMPLER);
 262             break;
 263
 264         /* 24bit Z buffer can only be used as a texture on R500. */
 265         case PIPE_FORMAT_Z24X8_UNORM:
 266         /* Z buffer with stencil or texture */
 267         case PIPE_FORMAT_Z24S8_UNORM:
 268             retval = usage &
 269                 (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
 270                  (is_r500 ? PIPE_TEXTURE_USAGE_SAMPLER : 0));
 271             break;
 272
 273         /* Definitely unsupported formats. */
 274         /* Non-usable Z buffer/stencil formats. */
 275         case PIPE_FORMAT_Z32_UNORM:
 276         case PIPE_FORMAT_S8Z24_UNORM:
 277         case PIPE_FORMAT_X8Z24_UNORM:
 278             SCREEN_DBG(r300_screen(screen), DBG_TEX,
 279                        "r300: Note: Got unsupported format: %s in %s\n",
 280                        util_format_name(format), __FUNCTION__);
 281             return FALSE;
 282
 283         /* XXX Add all remaining gallium-supported formats,
 284          * see util/u_format.csv. */
 285
 286         default:
 287             /* Unknown format... */
 288             debug_printf("r300: Warning: Got unknown format: %s in %s\n",
 289                 util_format_name(format), __FUNCTION__);
 290             break;
 291     }
 292
 293     /* If usage was a mask that contained multiple bits, and not all of them
 294      * are supported, this will catch that and return FALSE.
 295      * e.g. usage = 2 | 4; retval = 4; (retval >= usage) == FALSE
 296      *
 297      * This also returns FALSE for any unknown formats.
 298      */
 299     return (retval >= usage);
 300 }
 301
 302 static struct pipe_transfer*
 303 r300_get_tex_transfer(struct pipe_screen *screen,
 304                       struct pipe_texture *texture,
 305                       unsigned face, unsigned level, unsigned zslice,
 306                       enum pipe_transfer_usage usage, unsigned x, unsigned y,
 307                       unsigned w, unsigned h)
 308 {
 309     struct r300_texture *tex = (struct r300_texture *)texture;
 310     struct r300_transfer *trans;
 311     struct r300_screen *rscreen = r300_screen(screen);
 312     unsigned offset;
 313
 314     offset = r300_texture_get_offset(tex, level, zslice, face);  /* in bytes */
 315
 316     trans = CALLOC_STRUCT(r300_transfer);
 317     if (trans) {
 318         pipe_texture_reference(&trans->transfer.texture, texture);
 319         trans->transfer.x = x;
 320         trans->transfer.y = y;
 321         trans->transfer.width = w;
 322         trans->transfer.height = h;
 323         trans->transfer.stride = r300_texture_get_stride(rscreen, tex, level);
 324         trans->transfer.usage = usage;
 325         trans->transfer.zslice = zslice;
 326         trans->transfer.face = face;
 327
 328         trans->offset = offset;
 329     }
 330     return &trans->transfer;
 331 }
 332
 333 static void
 334 r300_tex_transfer_destroy(struct pipe_transfer *trans)
 335 {
 336    pipe_texture_reference(&trans->texture, NULL);
 337    FREE(trans);
 338 }
 339
 340 static void* r300_transfer_map(struct pipe_screen* screen,
 341                               struct pipe_transfer* transfer)
 342 {
 343     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 344     char* map;
 345     enum pipe_format format = tex->tex.format;
 346
 347     map = pipe_buffer_map(screen, tex->buffer,
 348                           pipe_transfer_buffer_flags(transfer));
 349
 350     if (!map) {
 351         return NULL;
 352     }
 353
 354     return map + r300_transfer(transfer)->offset +
 355         transfer->y / util_format_get_blockheight(format) * transfer->stride +
 356         transfer->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
 357 }
 358
 359 static void r300_transfer_unmap(struct pipe_screen* screen,
 360                                 struct pipe_transfer* transfer)
 361 {
 362     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 363     pipe_buffer_unmap(screen, tex->buffer);
 364 }
 365
 366 static void r300_destroy_screen(struct pipe_screen* pscreen)
 367 {
 368     struct r300_screen* r300screen = r300_screen(pscreen);
 369
 370     FREE(r300screen->caps);
 371     FREE(r300screen);
 372 }
 373
 374 struct pipe_screen* r300_create_screen(struct radeon_winsys* radeon_winsys)
 375 {
 376     struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
 377     struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
 378
 379     if (!r300screen || !caps) {
 380         FREE(r300screen);
 381         FREE(caps);
 382         return NULL;
 383     }
 384
 385     caps->pci_id = radeon_winsys->pci_id;
 386     caps->num_frag_pipes = radeon_winsys->gb_pipes;
 387     caps->num_z_pipes = radeon_winsys->z_pipes;
 388
 389     r300_init_debug(r300screen);
 390     r300_parse_chipset(caps);
 391
 392     r300screen->caps = caps;
 393     r300screen->radeon_winsys = radeon_winsys;
 394     r300screen->screen.winsys = (struct pipe_winsys*)radeon_winsys;
 395     r300screen->screen.destroy = r300_destroy_screen;
 396     r300screen->screen.get_name = r300_get_name;
 397     r300screen->screen.get_vendor = r300_get_vendor;
 398     r300screen->screen.get_param = r300_get_param;
 399     r300screen->screen.get_paramf = r300_get_paramf;
 400     r300screen->screen.is_format_supported = r300_is_format_supported;
 401     r300screen->screen.context_create = r300_create_context;
 402     r300screen->screen.get_tex_transfer = r300_get_tex_transfer;
 403     r300screen->screen.tex_transfer_destroy = r300_tex_transfer_destroy;
 404     r300screen->screen.transfer_map = r300_transfer_map;
 405     r300screen->screen.transfer_unmap = r300_transfer_unmap;
 406
 407     r300_init_screen_texture_functions(&r300screen->screen);
 408     u_simple_screen_init(&r300screen->screen);
 409
 410     return &r300screen->screen;
 411 }