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 "pipe/p_inlines.h"
  24 #include "util/u_memory.h"
  25 #include "util/u_simple_screen.h"
  26
  27 #include "r300_context.h"
  28 #include "r300_screen.h"
  29 #include "r300_texture.h"
  30 #include "r300_winsys.h"
  31
  32 /* Return the identifier behind whom the brave coders responsible for this
  33  * amalgamation of code, sweat, and duct tape, routinely obscure their names.
  34  *
  35  * ...I should have just put "Corbin Simpson", but I'm not that cool.
  36  *
  37  * (Or egotistical. Yet.) */
  38 static const char* r300_get_vendor(struct pipe_screen* pscreen)
  39 {
  40     return "X.Org R300 Project";
  41 }
  42
  43 static const char* chip_families[] = {
  44     "R300",
  45     "R350",
  46     "R360",
  47     "RV350",
  48     "RV370",
  49     "RV380",
  50     "R420",
  51     "R423",
  52     "R430",
  53     "R480",
  54     "R481",
  55     "RV410",
  56     "RS400",
  57     "RC410",
  58     "RS480",
  59     "RS482",
  60     "RS600",
  61     "RS690",
  62     "RS740",
  63     "RV515",
  64     "R520",
  65     "RV530",
  66     "R580",
  67     "RV560",
  68     "RV570"
  69 };
  70
  71 static const char* r300_get_name(struct pipe_screen* pscreen)
  72 {
  73     struct r300_screen* r300screen = r300_screen(pscreen);
  74
  75     return chip_families[r300screen->caps->family];
  76 }
  77
  78 static int r300_get_param(struct pipe_screen* pscreen, int param)
  79 {
  80     struct r300_screen* r300screen = r300_screen(pscreen);
  81
  82     switch (param) {
  83         /* XXX cases marked "IN THEORY" are possible on the hardware,
  84          * but haven't been implemented yet. */
  85         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  86             /* XXX I'm told this goes up to 16 */
  87             return 8;
  88         case PIPE_CAP_NPOT_TEXTURES:
  89             /* IN THEORY */
  90             return 0;
  91         case PIPE_CAP_TWO_SIDED_STENCIL:
  92             if (r300screen->caps->is_r500) {
  93                 return 1;
  94             } else {
  95                 return 0;
  96             }
  97         case PIPE_CAP_GLSL:
  98             if (r300screen->caps->is_r500) {
  99                 return 1;
 100             } else {
 101                 return 0;
 102             }
 103         case PIPE_CAP_ANISOTROPIC_FILTER:
 104             return 1;
 105         case PIPE_CAP_POINT_SPRITE:
 106             /* IN THEORY */
 107             return 0;
 108         case PIPE_CAP_MAX_RENDER_TARGETS:
 109             return 4;
 110         case PIPE_CAP_OCCLUSION_QUERY:
 111             return 1;
 112         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 113             return 1;
 114         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 115             if (r300screen->caps->is_r500) {
 116                 /* 13 == 4096x4096 */
 117                 return 13;
 118             } else {
 119                 /* 12 == 2048x2048 */
 120                 return 12;
 121             }
 122         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 123             /* So, technically, the limit is the same as above, but some math
 124              * shows why this is silly. Assuming RGBA, 4cpp, we can see that
 125              * 4096*4096*4096 = 64.0 GiB exactly, so it's not exactly
 126              * practical. However, if at some point a game really wants this,
 127              * then we can remove or raise this limit. */
 128             if (r300screen->caps->is_r500) {
 129                 /* 9 == 256x256x256 */
 130                 return 9;
 131             } else {
 132                 /* 8 == 128*128*128 */
 133                 return 8;
 134             }
 135         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 136             if (r300screen->caps->is_r500) {
 137                 /* 13 == 4096x4096 */
 138                 return 13;
 139             } else {
 140                 /* 12 == 2048x2048 */
 141                 return 12;
 142             }
 143         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 144             return 1;
 145         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 146             return 1;
 147         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 148             /* XXX guessing (what a terrible guess) */
 149             return 2;
 150         case PIPE_CAP_TGSI_CONT_SUPPORTED:
 151             /* XXX */
 152             return 0;
 153         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 154             return 1;
 155         default:
 156             debug_printf("r300: Implementation error: Bad param %d\n",
 157                 param);
 158             return 0;
 159     }
 160 }
 161
 162 static float r300_get_paramf(struct pipe_screen* pscreen, int param)
 163 {
 164     struct r300_screen* r300screen = r300_screen(pscreen);
 165
 166     switch (param) {
 167         case PIPE_CAP_MAX_LINE_WIDTH:
 168         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 169         case PIPE_CAP_MAX_POINT_WIDTH:
 170         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 171             /* The maximum dimensions of the colorbuffer are our practical
 172              * rendering limits. 2048 pixels should be enough for anybody. */
 173             if (r300screen->caps->is_r500) {
 174                 return 4096.0f;
 175             } else {
 176                 return 2048.0f;
 177             }
 178         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 179             return 16.0f;
 180         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 181             return 16.0f;
 182         default:
 183             debug_printf("r300: Implementation error: Bad paramf %d\n",
 184                 param);
 185             return 0.0f;
 186     }
 187 }
 188
 189 static boolean check_tex_2d_format(enum pipe_format format, uint32_t usage,
 190                                    boolean is_r500)
 191 {
 192     uint32_t retval = 0;
 193
 194     switch (format) {
 195         /* Supported formats. */
 196         /* Colorbuffer */
 197         case PIPE_FORMAT_A4R4G4B4_UNORM:
 198         case PIPE_FORMAT_R5G6B5_UNORM:
 199         case PIPE_FORMAT_A1R5G5B5_UNORM:
 200             retval = usage &
 201                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 202                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 203                  PIPE_TEXTURE_USAGE_PRIMARY);
 204             break;
 205
 206         /* Texture */
 207         case PIPE_FORMAT_A8R8G8B8_SRGB:
 208         case PIPE_FORMAT_R8G8B8A8_SRGB:
 209         case PIPE_FORMAT_DXT1_RGB:
 210         case PIPE_FORMAT_DXT1_RGBA:
 211         case PIPE_FORMAT_DXT3_RGBA:
 212         case PIPE_FORMAT_DXT5_RGBA:
 213         case PIPE_FORMAT_YCBCR:
 214             retval = usage & PIPE_TEXTURE_USAGE_SAMPLER;
 215             break;
 216
 217         /* Colorbuffer or texture */
 218         case PIPE_FORMAT_A8R8G8B8_UNORM:
 219         case PIPE_FORMAT_X8R8G8B8_UNORM:
 220         case PIPE_FORMAT_R8G8B8A8_UNORM:
 221         case PIPE_FORMAT_R8G8B8X8_UNORM:
 222         case PIPE_FORMAT_I8_UNORM:
 223             retval = usage &
 224                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 225                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 226                  PIPE_TEXTURE_USAGE_PRIMARY |
 227                  PIPE_TEXTURE_USAGE_SAMPLER);
 228             break;
 229
 230         /* Z buffer or texture */
 231         case PIPE_FORMAT_Z16_UNORM:
 232         /* Z buffer with stencil or texture */
 233         case PIPE_FORMAT_Z24S8_UNORM:
 234             retval = usage &
 235                 (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
 236                  PIPE_TEXTURE_USAGE_SAMPLER);
 237             break;
 238
 239         /* Definitely unsupported formats. */
 240         /* Non-usable Z buffer/stencil formats. */
 241         case PIPE_FORMAT_Z32_UNORM:
 242         case PIPE_FORMAT_Z24X8_UNORM:
 243         case PIPE_FORMAT_S8Z24_UNORM:
 244         case PIPE_FORMAT_X8Z24_UNORM:
 245             debug_printf("r300: Note: Got unsupported format: %s in %s\n",
 246                 pf_name(format), __FUNCTION__);
 247             return FALSE;
 248
 249         /* XXX These don't even exist
 250         case PIPE_FORMAT_A32R32G32B32:
 251         case PIPE_FORMAT_A16R16G16B16: */
 252         /* XXX Insert YUV422 packed VYUY and YVYU here */
 253         /* XXX What the deuce is UV88? (r3xx accel page 14)
 254             debug_printf("r300: Warning: Got unimplemented format: %s in %s\n",
 255                 pf_name(format), __FUNCTION__);
 256             return FALSE; */
 257
 258         /* XXX Supported yet unimplemented r5xx formats: */
 259         /* XXX Again, what is UV1010 this time? (r5xx accel page 148) */
 260         /* XXX Even more that don't exist
 261         case PIPE_FORMAT_A10R10G10B10_UNORM:
 262         case PIPE_FORMAT_A2R10G10B10_UNORM:
 263         case PIPE_FORMAT_I10_UNORM:
 264             debug_printf(
 265                 "r300: Warning: Got unimplemented r500 format: %s in %s\n",
 266                 pf_name(format), __FUNCTION__);
 267             return FALSE; */
 268
 269         default:
 270             /* Unknown format... */
 271             debug_printf("r300: Warning: Got unknown format: %s in %s\n",
 272                 pf_name(format), __FUNCTION__);
 273             break;
 274     }
 275
 276     /* If usage was a mask that contained multiple bits, and not all of them
 277      * are supported, this will catch that and return FALSE.
 278      * e.g. usage = 2 | 4; retval = 4; (retval >= usage) == FALSE
 279      *
 280      * This also returns FALSE for any unknown formats.
 281      */
 282     return (retval >= usage);
 283 }
 284
 285 /* XXX moar targets */
 286 static boolean r300_is_format_supported(struct pipe_screen* pscreen,
 287                                         enum pipe_format format,
 288                                         enum pipe_texture_target target,
 289                                         unsigned tex_usage,
 290                                         unsigned geom_flags)
 291 {
 292     switch (target) {
 293         case PIPE_TEXTURE_2D:
 294             return check_tex_2d_format(format, tex_usage,
 295                 r300_screen(pscreen)->caps->is_r500);
 296         case PIPE_TEXTURE_1D:
 297         case PIPE_TEXTURE_3D:
 298         case PIPE_TEXTURE_CUBE:
 299             debug_printf("r300: Implementation error: Unsupported format "
 300                     "target: %d\n", target);
 301             break;
 302         default:
 303             debug_printf("r300: Fatal: This is not a format target: %d\n",
 304                 target);
 305             assert(0);
 306             break;
 307     }
 308
 309     return FALSE;
 310 }
 311
 312 static struct pipe_transfer*
 313 r300_get_tex_transfer(struct pipe_screen *screen,
 314                       struct pipe_texture *texture,
 315                       unsigned face, unsigned level, unsigned zslice,
 316                       enum pipe_transfer_usage usage, unsigned x, unsigned y,
 317                       unsigned w, unsigned h)
 318 {
 319     struct r300_texture *tex = (struct r300_texture *)texture;
 320     struct r300_transfer *trans;
 321     unsigned offset = 0;  /* in bytes */
 322
 323     /* XXX Add support for these things */
 324     if (texture->target == PIPE_TEXTURE_CUBE) {
 325         debug_printf("PIPE_TEXTURE_CUBE is not yet supported.\n");
 326         /* offset = tex->image_offset[level][face]; */
 327     }
 328     else if (texture->target == PIPE_TEXTURE_3D) {
 329         debug_printf("PIPE_TEXTURE_3D is not yet supported.\n");
 330         /* offset = tex->image_offset[level][zslice]; */
 331     }
 332     else {
 333         offset = tex->offset[level];
 334         assert(face == 0);
 335         assert(zslice == 0);
 336     }
 337
 338     trans = CALLOC_STRUCT(r300_transfer);
 339     if (trans) {
 340         pipe_texture_reference(&trans->transfer.texture, texture);
 341         trans->transfer.format = texture->format;
 342         trans->transfer.x = x;
 343         trans->transfer.y = y;
 344         trans->transfer.width = w;
 345         trans->transfer.height = h;
 346         trans->transfer.block = texture->block;
 347         trans->transfer.nblocksx = texture->nblocksx[level];
 348         trans->transfer.nblocksy = texture->nblocksy[level];
 349         trans->transfer.stride = r300_texture_get_stride(tex, level);
 350         trans->transfer.usage = usage;
 351         trans->offset = offset;
 352     }
 353     return &trans->transfer;
 354 }
 355
 356 static void
 357 r300_tex_transfer_destroy(struct pipe_transfer *trans)
 358 {
 359    pipe_texture_reference(&trans->texture, NULL);
 360    FREE(trans);
 361 }
 362
 363 static void* r300_transfer_map(struct pipe_screen* screen,
 364                               struct pipe_transfer* transfer)
 365 {
 366     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 367     char* map;
 368
 369     map = pipe_buffer_map(screen, tex->buffer,
 370                           pipe_transfer_buffer_flags(transfer));
 371
 372     if (!map) {
 373         return NULL;
 374     }
 375
 376     return map + r300_transfer(transfer)->offset +
 377         transfer->y / transfer->block.height * transfer->stride +
 378         transfer->x / transfer->block.width * transfer->block.size;
 379 }
 380
 381 static void r300_transfer_unmap(struct pipe_screen* screen,
 382                                 struct pipe_transfer* transfer)
 383 {
 384     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 385     pipe_buffer_unmap(screen, tex->buffer);
 386 }
 387
 388 static void r300_destroy_screen(struct pipe_screen* pscreen)
 389 {
 390     struct r300_screen* r300screen = r300_screen(pscreen);
 391
 392     FREE(r300screen->caps);
 393     FREE(r300screen);
 394 }
 395
 396 struct pipe_screen* r300_create_screen(struct r300_winsys* r300_winsys)
 397 {
 398     struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
 399     struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
 400
 401     if (!r300screen || !caps)
 402         return NULL;
 403
 404     caps->pci_id = r300_winsys->pci_id;
 405     caps->num_frag_pipes = r300_winsys->gb_pipes;
 406     caps->num_z_pipes = r300_winsys->z_pipes;
 407
 408     r300_parse_chipset(caps);
 409
 410     r300screen->caps = caps;
 411     r300screen->screen.winsys = (struct pipe_winsys*)r300_winsys;
 412     r300screen->screen.destroy = r300_destroy_screen;
 413     r300screen->screen.get_name = r300_get_name;
 414     r300screen->screen.get_vendor = r300_get_vendor;
 415     r300screen->screen.get_param = r300_get_param;
 416     r300screen->screen.get_paramf = r300_get_paramf;
 417     r300screen->screen.is_format_supported = r300_is_format_supported;
 418     r300screen->screen.get_tex_transfer = r300_get_tex_transfer;
 419     r300screen->screen.tex_transfer_destroy = r300_tex_transfer_destroy;
 420     r300screen->screen.transfer_map = r300_transfer_map;
 421     r300screen->screen.transfer_unmap = r300_transfer_unmap;
 422
 423     r300_init_screen_texture_functions(&r300screen->screen);
 424     u_simple_screen_init(&r300screen->screen);
 425
 426     return &r300screen->screen;
 427 }