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 "r300_screen.h"
  24
  25 /* Return the identifier behind whom the brave coders responsible for this
  26  * amalgamation of code, sweat, and duct tape, routinely obscure their names.
  27  *
  28  * ...I should have just put "Corbin Simpson", but I'm not that cool.
  29  *
  30  * (Or egotistical. Yet.) */
  31 static const char* r300_get_vendor(struct pipe_screen* pscreen)
  32 {
  33     return "X.Org R300 Project";
  34 }
  35
  36 static const char* chip_families[] = {
  37     "R300",
  38     "R350",
  39     "R360",
  40     "RV350",
  41     "RV370",
  42     "RV380",
  43     "R420",
  44     "R423",
  45     "R430",
  46     "R480",
  47     "R481",
  48     "RV410",
  49     "RS400",
  50     "RC410",
  51     "RS480",
  52     "RS482",
  53     "RS600",
  54     "RS690",
  55     "RS740",
  56     "RV515",
  57     "R520",
  58     "RV530",
  59     "R580",
  60     "RV560",
  61     "RV570"
  62 };
  63
  64 static const char* r300_get_name(struct pipe_screen* pscreen)
  65 {
  66     struct r300_screen* r300screen = r300_screen(pscreen);
  67
  68     return chip_families[r300screen->caps->family];
  69 }
  70
  71 static int r300_get_param(struct pipe_screen* pscreen, int param)
  72 {
  73     struct r300_screen* r300screen = r300_screen(pscreen);
  74
  75     switch (param) {
  76         /* XXX cases marked "IN THEORY" are possible on the hardware,
  77          * but haven't been implemented yet. */
  78         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  79             /* XXX I'm told this goes up to 16 */
  80             return 8;
  81         case PIPE_CAP_NPOT_TEXTURES:
  82             /* IN THEORY */
  83             return 0;
  84         case PIPE_CAP_TWO_SIDED_STENCIL:
  85             if (r300screen->caps->is_r500) {
  86                 return 1;
  87             } else {
  88                 return 0;
  89             }
  90         case PIPE_CAP_GLSL:
  91             if (r300screen->caps->is_r500) {
  92                 return 1;
  93             } else {
  94                 return 0;
  95             }
  96         case PIPE_CAP_ANISOTROPIC_FILTER:
  97             return 1;
  98         case PIPE_CAP_POINT_SPRITE:
  99             /* IN THEORY */
 100             return 0;
 101         case PIPE_CAP_MAX_RENDER_TARGETS:
 102             return 4;
 103         case PIPE_CAP_OCCLUSION_QUERY:
 104             return 1;
 105         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 106             return 1;
 107         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 108             if (r300screen->caps->is_r500) {
 109                 /* 13 == 4096x4096 */
 110                 return 13;
 111             } else {
 112                 /* 12 == 2048x2048 */
 113                 return 12;
 114             }
 115         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 116             /* So, technically, the limit is the same as above, but some math
 117              * shows why this is silly. Assuming RGBA, 4cpp, we can see that
 118              * 4096*4096*4096 = 64.0 GiB exactly, so it's not exactly
 119              * practical. However, if at some point a game really wants this,
 120              * then we can remove or raise this limit. */
 121             if (r300screen->caps->is_r500) {
 122                 /* 9 == 256x256x256 */
 123                 return 9;
 124             } else {
 125                 /* 8 == 128*128*128 */
 126                 return 8;
 127             }
 128         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 129             if (r300screen->caps->is_r500) {
 130                 /* 13 == 4096x4096 */
 131                 return 13;
 132             } else {
 133                 /* 12 == 2048x2048 */
 134                 return 12;
 135             }
 136         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 137             return 1;
 138         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 139             return 1;
 140         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 141             /* XXX guessing (what a terrible guess) */
 142             return 2;
 143         case PIPE_CAP_TGSI_CONT_SUPPORTED:
 144             /* XXX */
 145             return 0;
 146         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 147             return 1;
 148         default:
 149             debug_printf("r300: Implementation error: Bad param %d\n",
 150                 param);
 151             return 0;
 152     }
 153 }
 154
 155 static float r300_get_paramf(struct pipe_screen* pscreen, int param)
 156 {
 157     struct r300_screen* r300screen = r300_screen(pscreen);
 158
 159     switch (param) {
 160         case PIPE_CAP_MAX_LINE_WIDTH:
 161         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 162         case PIPE_CAP_MAX_POINT_WIDTH:
 163         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 164             /* The maximum dimensions of the colorbuffer are our practical
 165              * rendering limits. 2048 pixels should be enough for anybody. */
 166             if (r300screen->caps->is_r500) {
 167                 return 4096.0f;
 168             } else {
 169                 return 2048.0f;
 170             }
 171         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 172             return 16.0f;
 173         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 174             return 16.0f;
 175         default:
 176             debug_printf("r300: Implementation error: Bad paramf %d\n",
 177                 param);
 178             return 0.0f;
 179     }
 180 }
 181
 182 static boolean check_tex_2d_format(enum pipe_format format, uint32_t usage,
 183                                    boolean is_r500)
 184 {
 185     uint32_t retval = 0;
 186
 187     switch (format) {
 188         /* Supported formats. */
 189         /* Colorbuffer */
 190         case PIPE_FORMAT_A4R4G4B4_UNORM:
 191         case PIPE_FORMAT_R5G6B5_UNORM:
 192         case PIPE_FORMAT_A1R5G5B5_UNORM:
 193             retval = usage &
 194                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 195                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 196                  PIPE_TEXTURE_USAGE_PRIMARY);
 197             break;
 198
 199         /* Texture */
 200         case PIPE_FORMAT_A8R8G8B8_SRGB:
 201         case PIPE_FORMAT_R8G8B8A8_SRGB:
 202         case PIPE_FORMAT_DXT1_RGB:
 203         case PIPE_FORMAT_DXT1_RGBA:
 204         case PIPE_FORMAT_DXT3_RGBA:
 205         case PIPE_FORMAT_DXT5_RGBA:
 206         case PIPE_FORMAT_YCBCR:
 207             retval = usage & PIPE_TEXTURE_USAGE_SAMPLER;
 208             break;
 209
 210         /* Colorbuffer or texture */
 211         case PIPE_FORMAT_A8R8G8B8_UNORM:
 212         case PIPE_FORMAT_X8R8G8B8_UNORM:
 213         case PIPE_FORMAT_R8G8B8A8_UNORM:
 214         case PIPE_FORMAT_R8G8B8X8_UNORM:
 215         case PIPE_FORMAT_I8_UNORM:
 216             retval = usage &
 217                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 218                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 219                  PIPE_TEXTURE_USAGE_PRIMARY |
 220                  PIPE_TEXTURE_USAGE_SAMPLER);
 221             break;
 222
 223         /* Z buffer or texture */
 224         case PIPE_FORMAT_Z16_UNORM:
 225         /* Z buffer with stencil or texture */
 226         case PIPE_FORMAT_Z24S8_UNORM:
 227             retval = usage &
 228                 (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
 229                  PIPE_TEXTURE_USAGE_SAMPLER);
 230             break;
 231
 232         /* Definitely unsupported formats. */
 233         /* Non-usable Z buffer/stencil formats. */
 234         case PIPE_FORMAT_Z24X8_UNORM:
 235         case PIPE_FORMAT_S8Z24_UNORM:
 236         case PIPE_FORMAT_X8Z24_UNORM:
 237             debug_printf("r300: Note: Got unsupported format: %s in %s\n",
 238                 pf_name(format), __FUNCTION__);
 239             return FALSE;
 240
 241         /* XXX These don't even exist
 242         case PIPE_FORMAT_A32R32G32B32:
 243         case PIPE_FORMAT_A16R16G16B16: */
 244         /* XXX Insert YUV422 packed VYUY and YVYU here */
 245         /* XXX What the deuce is UV88? (r3xx accel page 14)
 246             debug_printf("r300: Warning: Got unimplemented format: %s in %s\n",
 247                 pf_name(format), __FUNCTION__);
 248             return FALSE; */
 249
 250         /* XXX Supported yet unimplemented r5xx formats: */
 251         /* XXX Again, what is UV1010 this time? (r5xx accel page 148) */
 252         /* XXX Even more that don't exist
 253         case PIPE_FORMAT_A10R10G10B10_UNORM:
 254         case PIPE_FORMAT_A2R10G10B10_UNORM:
 255         case PIPE_FORMAT_I10_UNORM:
 256             debug_printf(
 257                 "r300: Warning: Got unimplemented r500 format: %s in %s\n",
 258                 pf_name(format), __FUNCTION__);
 259             return FALSE; */
 260
 261         default:
 262             /* Unknown format... */
 263             debug_printf("r300: Warning: Got unknown format: %s in %s\n",
 264                 pf_name(format), __FUNCTION__);
 265             break;
 266     }
 267
 268     /* If usage was a mask that contained multiple bits, and not all of them
 269      * are supported, this will catch that and return FALSE.
 270      * e.g. usage = 2 | 4; retval = 4; (retval >= usage) == FALSE
 271      *
 272      * This also returns FALSE for any unknown formats.
 273      */
 274     return (retval >= usage);
 275 }
 276
 277 /* XXX moar targets */
 278 static boolean r300_is_format_supported(struct pipe_screen* pscreen,
 279                                         enum pipe_format format,
 280                                         enum pipe_texture_target target,
 281                                         unsigned tex_usage,
 282                                         unsigned geom_flags)
 283 {
 284     switch (target) {
 285         case PIPE_TEXTURE_2D:
 286             return check_tex_2d_format(format, tex_usage,
 287                 r300_screen(pscreen)->caps->is_r500);
 288         case PIPE_TEXTURE_1D:
 289         case PIPE_TEXTURE_3D:
 290         case PIPE_TEXTURE_CUBE:
 291             debug_printf("r300: Implementation error: Unsupported format "
 292                     "target: %d\n", target);
 293             break;
 294         default:
 295             debug_printf("r300: Fatal: This is not a format target: %d\n",
 296                 target);
 297             assert(0);
 298             break;
 299     }
 300
 301     return FALSE;
 302 }
 303
 304 static struct pipe_transfer*
 305 r300_get_tex_transfer(struct pipe_screen *screen,
 306                       struct pipe_texture *texture,
 307                       unsigned face, unsigned level, unsigned zslice,
 308                       enum pipe_transfer_usage usage, unsigned x, unsigned y,
 309                       unsigned w, unsigned h)
 310 {
 311     struct r300_texture *tex = (struct r300_texture *)texture;
 312     struct r300_transfer *trans;
 313     unsigned offset;  /* in bytes */
 314
 315     /* XXX Add support for these things */
 316     if (texture->target == PIPE_TEXTURE_CUBE) {
 317         debug_printf("PIPE_TEXTURE_CUBE is not yet supported.\n");
 318         /* offset = tex->image_offset[level][face]; */
 319     }
 320     else if (texture->target == PIPE_TEXTURE_3D) {
 321         debug_printf("PIPE_TEXTURE_3D is not yet supported.\n");
 322         /* offset = tex->image_offset[level][zslice]; */
 323     }
 324     else {
 325         offset = tex->offset[level];
 326         assert(face == 0);
 327         assert(zslice == 0);
 328     }
 329
 330     trans = CALLOC_STRUCT(r300_transfer);
 331     if (trans) {
 332         pipe_texture_reference(&trans->transfer.texture, texture);
 333         trans->transfer.format = texture->format;
 334         trans->transfer.x = x;
 335         trans->transfer.y = y;
 336         trans->transfer.width = w;
 337         trans->transfer.height = h;
 338         trans->transfer.block = texture->block;
 339         trans->transfer.nblocksx = texture->nblocksx[level];
 340         trans->transfer.nblocksy = texture->nblocksy[level];
 341         trans->transfer.stride = r300_texture_get_stride(tex, level);
 342         trans->transfer.usage = usage;
 343         trans->offset = offset;
 344     }
 345     return &trans->transfer;
 346 }
 347
 348 static void
 349 r300_tex_transfer_destroy(struct pipe_transfer *trans)
 350 {
 351    pipe_texture_reference(&trans->texture, NULL);
 352    FREE(trans);
 353 }
 354
 355 static void* r300_transfer_map(struct pipe_screen* screen,
 356                               struct pipe_transfer* transfer)
 357 {
 358     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 359     char* map;
 360
 361     map = pipe_buffer_map(screen, tex->buffer,
 362                           pipe_transfer_buffer_flags(transfer));
 363
 364     if (!map) {
 365         return NULL;
 366     }
 367
 368     return map + r300_transfer(transfer)->offset +
 369         transfer->y / transfer->block.height * transfer->stride +
 370         transfer->x / transfer->block.width * transfer->block.size;
 371 }
 372
 373 static void r300_transfer_unmap(struct pipe_screen* screen,
 374                                 struct pipe_transfer* transfer)
 375 {
 376     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 377     pipe_buffer_unmap(screen, tex->buffer);
 378 }
 379
 380 static void r300_destroy_screen(struct pipe_screen* pscreen)
 381 {
 382     struct r300_screen* r300screen = r300_screen(pscreen);
 383
 384     FREE(r300screen->caps);
 385     FREE(r300screen);
 386 }
 387
 388 struct pipe_screen* r300_create_screen(struct r300_winsys* r300_winsys)
 389 {
 390     struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
 391     struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
 392
 393     if (!r300screen || !caps)
 394         return NULL;
 395
 396     caps->pci_id = r300_winsys->pci_id;
 397     caps->num_frag_pipes = r300_winsys->gb_pipes;
 398     caps->num_z_pipes = r300_winsys->z_pipes;
 399
 400     r300_parse_chipset(caps);
 401
 402     r300screen->caps = caps;
 403     r300screen->screen.winsys = (struct pipe_winsys*)r300_winsys;
 404     r300screen->screen.destroy = r300_destroy_screen;
 405     r300screen->screen.get_name = r300_get_name;
 406     r300screen->screen.get_vendor = r300_get_vendor;
 407     r300screen->screen.get_param = r300_get_param;
 408     r300screen->screen.get_paramf = r300_get_paramf;
 409     r300screen->screen.is_format_supported = r300_is_format_supported;
 410     r300screen->screen.get_tex_transfer = r300_get_tex_transfer;
 411     r300screen->screen.tex_transfer_destroy = r300_tex_transfer_destroy;
 412     r300screen->screen.transfer_map = r300_transfer_map;
 413     r300screen->screen.transfer_unmap = r300_transfer_unmap;
 414
 415     r300_init_screen_texture_functions(&r300screen->screen);
 416     u_simple_screen_init(&r300screen->screen);
 417
 418     return &r300screen->screen;
 419 }