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         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  84             /* XXX I'm told this goes up to 16 */
  85             return 8;
  86         case PIPE_CAP_NPOT_TEXTURES:
  87             return 0;
  88         case PIPE_CAP_TWO_SIDED_STENCIL:
  89             if (r300screen->caps->is_r500) {
  90                 return 1;
  91             } else {
  92                 return 0;
  93             }
  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             return 1;
 111         case PIPE_CAP_ANISOTROPIC_FILTER:
 112             return 1;
 113         case PIPE_CAP_POINT_SPRITE:
 114             return 1;
 115         case PIPE_CAP_MAX_RENDER_TARGETS:
 116             return 4;
 117         case PIPE_CAP_OCCLUSION_QUERY:
 118             return 1;
 119         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 120             return 1;
 121         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 122             if (r300screen->caps->is_r500) {
 123                 /* 13 == 4096x4096 */
 124                 return 13;
 125             } else {
 126                 /* 12 == 2048x2048 */
 127                 return 12;
 128             }
 129         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 130             /* So, technically, the limit is the same as above, but some math
 131              * shows why this is silly. Assuming RGBA, 4cpp, we can see that
 132              * 4096*4096*4096 = 64.0 GiB exactly, so it's not exactly
 133              * practical. However, if at some point a game really wants this,
 134              * then we can remove or raise this limit. */
 135             if (r300screen->caps->is_r500) {
 136                 /* 9 == 256x256x256 */
 137                 return 9;
 138             } else {
 139                 /* 8 == 128*128*128 */
 140                 return 8;
 141             }
 142         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 143             if (r300screen->caps->is_r500) {
 144                 /* 13 == 4096x4096 */
 145                 return 13;
 146             } else {
 147                 /* 12 == 2048x2048 */
 148                 return 12;
 149             }
 150         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 151             return 1;
 152         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 153             return 1;
 154         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 155             return 0;
 156         case PIPE_CAP_TGSI_CONT_SUPPORTED:
 157             return 0;
 158         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 159             return 1;
 160         default:
 161             debug_printf("r300: Implementation error: Bad param %d\n",
 162                 param);
 163             return 0;
 164     }
 165 }
 166
 167 static float r300_get_paramf(struct pipe_screen* pscreen, int param)
 168 {
 169     struct r300_screen* r300screen = r300_screen(pscreen);
 170
 171     switch (param) {
 172         case PIPE_CAP_MAX_LINE_WIDTH:
 173         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 174         case PIPE_CAP_MAX_POINT_WIDTH:
 175         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 176             /* The maximum dimensions of the colorbuffer are our practical
 177              * rendering limits. 2048 pixels should be enough for anybody. */
 178             if (r300screen->caps->is_r500) {
 179                 return 4096.0f;
 180             } else {
 181                 return 2048.0f;
 182             }
 183         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 184             return 16.0f;
 185         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 186             return 16.0f;
 187         default:
 188             debug_printf("r300: Implementation error: Bad paramf %d\n",
 189                 param);
 190             return 0.0f;
 191     }
 192 }
 193
 194 static boolean check_tex_2d_format(enum pipe_format format, uint32_t usage,
 195                                    boolean is_r500)
 196 {
 197     uint32_t retval = 0;
 198
 199     switch (format) {
 200         /* Supported formats. */
 201         /* Colorbuffer */
 202         case PIPE_FORMAT_A4R4G4B4_UNORM:
 203         case PIPE_FORMAT_R5G6B5_UNORM:
 204         case PIPE_FORMAT_A1R5G5B5_UNORM:
 205             retval = usage &
 206                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 207                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 208                  PIPE_TEXTURE_USAGE_PRIMARY);
 209             break;
 210
 211         /* Texture */
 212         case PIPE_FORMAT_A8R8G8B8_SRGB:
 213         case PIPE_FORMAT_R8G8B8A8_SRGB:
 214         case PIPE_FORMAT_DXT1_RGB:
 215         case PIPE_FORMAT_DXT1_RGBA:
 216         case PIPE_FORMAT_DXT3_RGBA:
 217         case PIPE_FORMAT_DXT5_RGBA:
 218         case PIPE_FORMAT_YCBCR:
 219             retval = usage & PIPE_TEXTURE_USAGE_SAMPLER;
 220             break;
 221
 222         /* Colorbuffer or texture */
 223         case PIPE_FORMAT_A8R8G8B8_UNORM:
 224         case PIPE_FORMAT_X8R8G8B8_UNORM:
 225         case PIPE_FORMAT_R8G8B8A8_UNORM:
 226         case PIPE_FORMAT_R8G8B8X8_UNORM:
 227         case PIPE_FORMAT_I8_UNORM:
 228             retval = usage &
 229                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 230                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 231                  PIPE_TEXTURE_USAGE_PRIMARY |
 232                  PIPE_TEXTURE_USAGE_SAMPLER);
 233             break;
 234
 235         /* Z buffer or texture */
 236         case PIPE_FORMAT_Z16_UNORM:
 237         case PIPE_FORMAT_Z24X8_UNORM:
 238         /* Z buffer with stencil or texture */
 239         case PIPE_FORMAT_Z24S8_UNORM:
 240             retval = usage &
 241                 (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
 242                  PIPE_TEXTURE_USAGE_SAMPLER);
 243             break;
 244
 245         /* Definitely unsupported formats. */
 246         /* Non-usable Z buffer/stencil formats. */
 247         case PIPE_FORMAT_Z32_UNORM:
 248         case PIPE_FORMAT_S8Z24_UNORM:
 249         case PIPE_FORMAT_X8Z24_UNORM:
 250             debug_printf("r300: Note: Got unsupported format: %s in %s\n",
 251                 pf_name(format), __FUNCTION__);
 252             return FALSE;
 253
 254         /* XXX These don't even exist
 255         case PIPE_FORMAT_A32R32G32B32:
 256         case PIPE_FORMAT_A16R16G16B16: */
 257         /* XXX What the deuce is UV88? (r3xx accel page 14)
 258             debug_printf("r300: Warning: Got unimplemented format: %s in %s\n",
 259                 pf_name(format), __FUNCTION__);
 260             return FALSE; */
 261
 262         /* XXX Supported yet unimplemented r5xx formats: */
 263         /* XXX Again, what is UV1010 this time? (r5xx accel page 148) */
 264         /* XXX Even more that don't exist
 265         case PIPE_FORMAT_A10R10G10B10_UNORM:
 266         case PIPE_FORMAT_A2R10G10B10_UNORM:
 267         case PIPE_FORMAT_I10_UNORM:
 268             debug_printf(
 269                 "r300: Warning: Got unimplemented r500 format: %s in %s\n",
 270                 pf_name(format), __FUNCTION__);
 271             return FALSE; */
 272
 273         default:
 274             /* Unknown format... */
 275             debug_printf("r300: Warning: Got unknown format: %s in %s\n",
 276                 pf_name(format), __FUNCTION__);
 277             break;
 278     }
 279
 280     /* If usage was a mask that contained multiple bits, and not all of them
 281      * are supported, this will catch that and return FALSE.
 282      * e.g. usage = 2 | 4; retval = 4; (retval >= usage) == FALSE
 283      *
 284      * This also returns FALSE for any unknown formats.
 285      */
 286     return (retval >= usage);
 287 }
 288
 289 /* XXX moar targets */
 290 static boolean r300_is_format_supported(struct pipe_screen* pscreen,
 291                                         enum pipe_format format,
 292                                         enum pipe_texture_target target,
 293                                         unsigned tex_usage,
 294                                         unsigned geom_flags)
 295 {
 296     switch (target) {
 297         case PIPE_TEXTURE_2D:
 298             return check_tex_2d_format(format, tex_usage,
 299                 r300_screen(pscreen)->caps->is_r500);
 300         case PIPE_TEXTURE_1D:
 301         case PIPE_TEXTURE_3D:
 302         case PIPE_TEXTURE_CUBE:
 303             debug_printf("r300: Implementation error: Unsupported format "
 304                     "target: %d\n", target);
 305             break;
 306         default:
 307             debug_printf("r300: Fatal: This is not a format target: %d\n",
 308                 target);
 309             assert(0);
 310             break;
 311     }
 312
 313     return FALSE;
 314 }
 315
 316 static struct pipe_transfer*
 317 r300_get_tex_transfer(struct pipe_screen *screen,
 318                       struct pipe_texture *texture,
 319                       unsigned face, unsigned level, unsigned zslice,
 320                       enum pipe_transfer_usage usage, unsigned x, unsigned y,
 321                       unsigned w, unsigned h)
 322 {
 323     struct r300_texture *tex = (struct r300_texture *)texture;
 324     struct r300_transfer *trans;
 325     unsigned offset = 0;  /* in bytes */
 326
 327     /* XXX Add support for these things */
 328     if (texture->target == PIPE_TEXTURE_CUBE) {
 329         debug_printf("PIPE_TEXTURE_CUBE is not yet supported.\n");
 330         /* offset = tex->image_offset[level][face]; */
 331     }
 332     else if (texture->target == PIPE_TEXTURE_3D) {
 333         debug_printf("PIPE_TEXTURE_3D is not yet supported.\n");
 334         /* offset = tex->image_offset[level][zslice]; */
 335     }
 336     else {
 337         offset = tex->offset[level];
 338         assert(face == 0);
 339         assert(zslice == 0);
 340     }
 341
 342     trans = CALLOC_STRUCT(r300_transfer);
 343     if (trans) {
 344         pipe_texture_reference(&trans->transfer.texture, texture);
 345         trans->transfer.format = texture->format;
 346         trans->transfer.x = x;
 347         trans->transfer.y = y;
 348         trans->transfer.width = w;
 349         trans->transfer.height = h;
 350         trans->transfer.block = texture->block;
 351         trans->transfer.nblocksx = texture->nblocksx[level];
 352         trans->transfer.nblocksy = texture->nblocksy[level];
 353         trans->transfer.stride = r300_texture_get_stride(tex, level);
 354         trans->transfer.usage = usage;
 355         trans->offset = offset;
 356     }
 357     return &trans->transfer;
 358 }
 359
 360 static void
 361 r300_tex_transfer_destroy(struct pipe_transfer *trans)
 362 {
 363    pipe_texture_reference(&trans->texture, NULL);
 364    FREE(trans);
 365 }
 366
 367 static void* r300_transfer_map(struct pipe_screen* screen,
 368                               struct pipe_transfer* transfer)
 369 {
 370     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 371     char* map;
 372
 373     map = pipe_buffer_map(screen, tex->buffer,
 374                           pipe_transfer_buffer_flags(transfer));
 375
 376     if (!map) {
 377         return NULL;
 378     }
 379
 380     return map + r300_transfer(transfer)->offset +
 381         transfer->y / transfer->block.height * transfer->stride +
 382         transfer->x / transfer->block.width * transfer->block.size;
 383 }
 384
 385 static void r300_transfer_unmap(struct pipe_screen* screen,
 386                                 struct pipe_transfer* transfer)
 387 {
 388     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 389     pipe_buffer_unmap(screen, tex->buffer);
 390 }
 391
 392 static void r300_destroy_screen(struct pipe_screen* pscreen)
 393 {
 394     struct r300_screen* r300screen = r300_screen(pscreen);
 395
 396     FREE(r300screen->caps);
 397     FREE(r300screen);
 398 }
 399
 400 struct pipe_screen* r300_create_screen(struct r300_winsys* r300_winsys)
 401 {
 402     struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
 403     struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
 404
 405     if (!r300screen || !caps)
 406         return NULL;
 407
 408     caps->pci_id = r300_winsys->pci_id;
 409     caps->num_frag_pipes = r300_winsys->gb_pipes;
 410     caps->num_z_pipes = r300_winsys->z_pipes;
 411
 412     r300_parse_chipset(caps);
 413
 414     r300screen->caps = caps;
 415     r300screen->screen.winsys = (struct pipe_winsys*)r300_winsys;
 416     r300screen->screen.destroy = r300_destroy_screen;
 417     r300screen->screen.get_name = r300_get_name;
 418     r300screen->screen.get_vendor = r300_get_vendor;
 419     r300screen->screen.get_param = r300_get_param;
 420     r300screen->screen.get_paramf = r300_get_paramf;
 421     r300screen->screen.is_format_supported = r300_is_format_supported;
 422     r300screen->screen.get_tex_transfer = r300_get_tex_transfer;
 423     r300screen->screen.tex_transfer_destroy = r300_tex_transfer_destroy;
 424     r300screen->screen.transfer_map = r300_transfer_map;
 425     r300screen->screen.transfer_unmap = r300_transfer_unmap;
 426
 427     r300_init_screen_texture_functions(&r300screen->screen);
 428     u_simple_screen_init(&r300screen->screen);
 429
 430     return &r300screen->screen;
 431 }