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_S3TC:
  97             return 1;
  98         case PIPE_CAP_ANISOTROPIC_FILTER:
  99             return 1;
 100         case PIPE_CAP_POINT_SPRITE:
 101             /* IN THEORY */
 102             return 0;
 103         case PIPE_CAP_MAX_RENDER_TARGETS:
 104             return 4;
 105         case PIPE_CAP_OCCLUSION_QUERY:
 106             /* IN THEORY */
 107             return 0;
 108         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 109             /* IN THEORY */
 110             return 0;
 111         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 112             if (r300screen->caps->is_r500) {
 113                 /* 13 == 4096x4096 */
 114                 return 13;
 115             } else {
 116                 /* 12 == 2048x2048 */
 117                 return 12;
 118             }
 119         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 120             /* So, technically, the limit is the same as above, but some math
 121              * shows why this is silly. Assuming RGBA, 4cpp, we can see that
 122              * 4096*4096*4096 = 64.0 GiB exactly, so it's not exactly
 123              * practical. However, if at some point a game really wants this,
 124              * then we can remove or raise this limit. */
 125             if (r300screen->caps->is_r500) {
 126                 /* 9 == 256x256x256 */
 127                 return 9;
 128             } else {
 129                 /* 8 == 128*128*128 */
 130                 return 8;
 131             }
 132         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 133             if (r300screen->caps->is_r500) {
 134                 /* 13 == 4096x4096 */
 135                 return 13;
 136             } else {
 137                 /* 12 == 2048x2048 */
 138                 return 12;
 139             }
 140         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 141             return 1;
 142         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 143             return 1;
 144         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 145             /* XXX guessing (what a terrible guess) */
 146             return 2;
 147         case PIPE_CAP_TGSI_CONT_SUPPORTED:
 148             /* XXX */
 149             return 0;
 150         default:
 151             debug_printf("r300: Implementation error: Bad param %d\n",
 152                 param);
 153             return 0;
 154     }
 155 }
 156
 157 static float r300_get_paramf(struct pipe_screen* pscreen, int param)
 158 {
 159     struct r300_screen* r300screen = r300_screen(pscreen);
 160
 161     switch (param) {
 162         case PIPE_CAP_MAX_LINE_WIDTH:
 163         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 164         case PIPE_CAP_MAX_POINT_WIDTH:
 165         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 166             /* The maximum dimensions of the colorbuffer are our practical
 167              * rendering limits. 2048 pixels should be enough for anybody. */
 168             if (r300screen->caps->is_r500) {
 169                 return 4096.0f;
 170             } else {
 171                 return 2048.0f;
 172             }
 173         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 174             return 16.0f;
 175         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 176             return 16.0f;
 177         default:
 178             debug_printf("r300: Implementation error: Bad paramf %d\n",
 179                 param);
 180             return 0.0f;
 181     }
 182 }
 183
 184 static boolean check_tex_2d_format(enum pipe_format format, uint32_t usage,
 185                                    boolean is_r500)
 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             return usage &
 194                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 195                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 196                  PIPE_TEXTURE_USAGE_PRIMARY);
 197
 198         /* Texture */
 199         case PIPE_FORMAT_DXT1_RGB:
 200         case PIPE_FORMAT_DXT1_RGBA:
 201         case PIPE_FORMAT_DXT3_RGBA:
 202         case PIPE_FORMAT_DXT5_RGBA:
 203             return usage & PIPE_TEXTURE_USAGE_SAMPLER;
 204
 205         /* Colorbuffer or texture */
 206         case PIPE_FORMAT_A8R8G8B8_UNORM:
 207         case PIPE_FORMAT_R8G8B8A8_UNORM:
 208         case PIPE_FORMAT_I8_UNORM:
 209             return usage &
 210                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 211                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 212                  PIPE_TEXTURE_USAGE_PRIMARY |
 213                  PIPE_TEXTURE_USAGE_SAMPLER);
 214
 215         /* Z buffer */
 216         case PIPE_FORMAT_Z16_UNORM:
 217         /* Z buffer with stencil */
 218         case PIPE_FORMAT_Z24S8_UNORM:
 219             return usage & PIPE_TEXTURE_USAGE_DEPTH_STENCIL;
 220
 221         /* Definitely unsupported formats. */
 222         /* Non-usable Z buffer/stencil formats. */
 223         case PIPE_FORMAT_Z24X8_UNORM:
 224         case PIPE_FORMAT_S8Z24_UNORM:
 225         case PIPE_FORMAT_X8Z24_UNORM:
 226             debug_printf("r300: Note: Got unsupported format: %s in %s\n",
 227                 pf_name(format), __FUNCTION__);
 228             return FALSE;
 229
 230         /* XXX These don't even exist
 231         case PIPE_FORMAT_A32R32G32B32:
 232         case PIPE_FORMAT_A16R16G16B16: */
 233         /* XXX Insert YUV422 packed VYUY and YVYU here */
 234         /* XXX What the deuce is UV88? (r3xx accel page 14)
 235             debug_printf("r300: Warning: Got unimplemented format: %s in %s\n",
 236                 pf_name(format), __FUNCTION__);
 237             return FALSE; */
 238
 239         /* XXX Supported yet unimplemented r5xx formats: */
 240         /* XXX Again, what is UV1010 this time? (r5xx accel page 148) */
 241         /* XXX Even more that don't exist
 242         case PIPE_FORMAT_A10R10G10B10_UNORM:
 243         case PIPE_FORMAT_A2R10G10B10_UNORM:
 244         case PIPE_FORMAT_I10_UNORM:
 245             debug_printf(
 246                 "r300: Warning: Got unimplemented r500 format: %s in %s\n",
 247                 pf_name(format), __FUNCTION__);
 248             return FALSE; */
 249
 250         default:
 251             /* Unknown format... */
 252             debug_printf("r300: Warning: Got unknown format: %s in %s\n",
 253                 pf_name(format), __FUNCTION__);
 254             break;
 255     }
 256
 257     return FALSE;
 258 }
 259
 260 /* XXX moar targets */
 261 static boolean r300_is_format_supported(struct pipe_screen* pscreen,
 262                                         enum pipe_format format,
 263                                         enum pipe_texture_target target,
 264                                         unsigned tex_usage,
 265                                         unsigned geom_flags)
 266 {
 267     switch (target) {
 268         case PIPE_TEXTURE_2D:
 269             return check_tex_2d_format(format, tex_usage,
 270                 r300_screen(pscreen)->caps->is_r500);
 271         case PIPE_TEXTURE_1D:
 272         case PIPE_TEXTURE_3D:
 273         case PIPE_TEXTURE_CUBE:
 274             debug_printf("r300: Implementation error: Unsupported format "
 275                     "target: %d\n", target);
 276             break;
 277         default:
 278             debug_printf("r300: Fatal: This is not a format target: %d\n",
 279                 target);
 280             assert(0);
 281             break;
 282     }
 283
 284     return FALSE;
 285 }
 286
 287 static struct pipe_transfer*
 288 r300_get_tex_transfer(struct pipe_screen *screen,
 289                       struct pipe_texture *texture,
 290                       unsigned face, unsigned level, unsigned zslice,
 291                       enum pipe_transfer_usage usage, unsigned x, unsigned y,
 292                       unsigned w, unsigned h)
 293 {
 294     struct r300_texture *tex = (struct r300_texture *)texture;
 295     struct r300_transfer *trans;
 296     unsigned offset;  /* in bytes */
 297
 298     /* XXX Add support for these things */
 299     if (texture->target == PIPE_TEXTURE_CUBE) {
 300         debug_printf("PIPE_TEXTURE_CUBE is not yet supported.\n");
 301         /* offset = tex->image_offset[level][face]; */
 302     }
 303     else if (texture->target == PIPE_TEXTURE_3D) {
 304         debug_printf("PIPE_TEXTURE_3D is not yet supported.\n");
 305         /* offset = tex->image_offset[level][zslice]; */
 306     }
 307     else {
 308         offset = tex->offset[level];
 309         assert(face == 0);
 310         assert(zslice == 0);
 311     }
 312
 313     trans = CALLOC_STRUCT(r300_transfer);
 314     if (trans) {
 315         pipe_texture_reference(&trans->transfer.texture, texture);
 316         trans->transfer.format = trans->transfer.format;
 317         trans->transfer.width = w;
 318         trans->transfer.height = h;
 319         trans->transfer.block = texture->block;
 320         trans->transfer.nblocksx = texture->nblocksx[level];
 321         trans->transfer.nblocksy = texture->nblocksy[level];
 322         trans->transfer.stride = tex->stride;
 323         trans->transfer.usage = usage;
 324         trans->offset = offset;
 325     }
 326     return &trans->transfer;
 327 }
 328
 329 static void
 330 r300_tex_transfer_destroy(struct pipe_transfer *trans)
 331 {
 332    pipe_texture_reference(&trans->texture, NULL);
 333    FREE(trans);
 334 }
 335
 336 static void* r300_transfer_map(struct pipe_screen* screen,
 337                               struct pipe_transfer* transfer)
 338 {
 339     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 340     char* map;
 341     unsigned flags = 0;
 342
 343     if (transfer->usage != PIPE_TRANSFER_WRITE) {
 344         flags |= PIPE_BUFFER_USAGE_CPU_READ;
 345     }
 346     if (transfer->usage != PIPE_TRANSFER_READ) {
 347         flags |= PIPE_BUFFER_USAGE_CPU_WRITE;
 348     }
 349
 350     map = pipe_buffer_map(screen, tex->buffer, flags);
 351
 352     if (!map) {
 353         return NULL;
 354     }
 355
 356     return map + r300_transfer(transfer)->offset +
 357         transfer->y / transfer->block.height * transfer->stride +
 358         transfer->x / transfer->block.width * transfer->block.size;
 359 }
 360
 361 static void r300_transfer_unmap(struct pipe_screen* screen,
 362                                 struct pipe_transfer* transfer)
 363 {
 364     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 365     pipe_buffer_unmap(screen, tex->buffer);
 366 }
 367
 368 static void r300_destroy_screen(struct pipe_screen* pscreen)
 369 {
 370     struct r300_screen* r300screen = r300_screen(pscreen);
 371
 372     FREE(r300screen->caps);
 373     FREE(r300screen);
 374 }
 375
 376 struct pipe_screen* r300_create_screen(struct r300_winsys* r300_winsys)
 377 {
 378     struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
 379     struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
 380
 381     if (!r300screen || !caps)
 382         return NULL;
 383
 384     caps->pci_id = r300_winsys->pci_id;
 385
 386     r300_parse_chipset(caps);
 387
 388     r300screen->caps = caps;
 389     r300screen->screen.winsys = (struct pipe_winsys*)r300_winsys;
 390     r300screen->screen.destroy = r300_destroy_screen;
 391     r300screen->screen.get_name = r300_get_name;
 392     r300screen->screen.get_vendor = r300_get_vendor;
 393     r300screen->screen.get_param = r300_get_param;
 394     r300screen->screen.get_paramf = r300_get_paramf;
 395     r300screen->screen.is_format_supported = r300_is_format_supported;
 396     r300screen->screen.get_tex_transfer = r300_get_tex_transfer;
 397     r300screen->screen.tex_transfer_destroy = r300_tex_transfer_destroy;
 398     r300screen->screen.transfer_map = r300_transfer_map;
 399     r300screen->screen.transfer_unmap = r300_transfer_unmap;
 400
 401     r300_init_screen_texture_functions(&r300screen->screen);
 402     u_simple_screen_init(&r300screen->screen);
 403
 404     return &r300screen->screen;
 405 }