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         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 151             return 1;
 152         default:
 153             debug_printf("r300: Implementation error: Bad param %d\n",
 154                 param);
 155             return 0;
 156     }
 157 }
 158
 159 static float r300_get_paramf(struct pipe_screen* pscreen, int param)
 160 {
 161     struct r300_screen* r300screen = r300_screen(pscreen);
 162
 163     switch (param) {
 164         case PIPE_CAP_MAX_LINE_WIDTH:
 165         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 166         case PIPE_CAP_MAX_POINT_WIDTH:
 167         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 168             /* The maximum dimensions of the colorbuffer are our practical
 169              * rendering limits. 2048 pixels should be enough for anybody. */
 170             if (r300screen->caps->is_r500) {
 171                 return 4096.0f;
 172             } else {
 173                 return 2048.0f;
 174             }
 175         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 176             return 16.0f;
 177         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 178             return 16.0f;
 179         default:
 180             debug_printf("r300: Implementation error: Bad paramf %d\n",
 181                 param);
 182             return 0.0f;
 183     }
 184 }
 185
 186 static boolean check_tex_2d_format(enum pipe_format format, uint32_t usage,
 187                                    boolean is_r500)
 188 {
 189     switch (format) {
 190         /* Supported formats. */
 191         /* Colorbuffer */
 192         case PIPE_FORMAT_A4R4G4B4_UNORM:
 193         case PIPE_FORMAT_R5G6B5_UNORM:
 194         case PIPE_FORMAT_A1R5G5B5_UNORM:
 195             return usage &
 196                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 197                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 198                  PIPE_TEXTURE_USAGE_PRIMARY);
 199
 200         /* Texture */
 201         case PIPE_FORMAT_A8R8G8B8_SRGB:
 202         case PIPE_FORMAT_R8G8B8A8_SRGB:
 203         case PIPE_FORMAT_DXT1_RGB:
 204         case PIPE_FORMAT_DXT1_RGBA:
 205         case PIPE_FORMAT_DXT3_RGBA:
 206         case PIPE_FORMAT_DXT5_RGBA:
 207         case PIPE_FORMAT_YCBCR:
 208             return usage & PIPE_TEXTURE_USAGE_SAMPLER;
 209
 210         /* Colorbuffer or texture */
 211         case PIPE_FORMAT_A8R8G8B8_UNORM:
 212         case PIPE_FORMAT_R8G8B8A8_UNORM:
 213         case PIPE_FORMAT_I8_UNORM:
 214             return usage &
 215                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 216                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 217                  PIPE_TEXTURE_USAGE_PRIMARY |
 218                  PIPE_TEXTURE_USAGE_SAMPLER);
 219
 220         /* Z buffer */
 221         case PIPE_FORMAT_Z16_UNORM:
 222             return usage & PIPE_TEXTURE_USAGE_DEPTH_STENCIL;
 223
 224         /* Z buffer with stencil or texture */
 225         case PIPE_FORMAT_Z24S8_UNORM:
 226             return usage &
 227                 (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
 228                  PIPE_TEXTURE_USAGE_SAMPLER);
 229
 230         /* Definitely unsupported formats. */
 231         /* Non-usable Z buffer/stencil formats. */
 232         case PIPE_FORMAT_Z24X8_UNORM:
 233         case PIPE_FORMAT_S8Z24_UNORM:
 234         case PIPE_FORMAT_X8Z24_UNORM:
 235             debug_printf("r300: Note: Got unsupported format: %s in %s\n",
 236                 pf_name(format), __FUNCTION__);
 237             return FALSE;
 238
 239         /* XXX These don't even exist
 240         case PIPE_FORMAT_A32R32G32B32:
 241         case PIPE_FORMAT_A16R16G16B16: */
 242         /* XXX Insert YUV422 packed VYUY and YVYU here */
 243         /* XXX What the deuce is UV88? (r3xx accel page 14)
 244             debug_printf("r300: Warning: Got unimplemented format: %s in %s\n",
 245                 pf_name(format), __FUNCTION__);
 246             return FALSE; */
 247
 248         /* XXX Supported yet unimplemented r5xx formats: */
 249         /* XXX Again, what is UV1010 this time? (r5xx accel page 148) */
 250         /* XXX Even more that don't exist
 251         case PIPE_FORMAT_A10R10G10B10_UNORM:
 252         case PIPE_FORMAT_A2R10G10B10_UNORM:
 253         case PIPE_FORMAT_I10_UNORM:
 254             debug_printf(
 255                 "r300: Warning: Got unimplemented r500 format: %s in %s\n",
 256                 pf_name(format), __FUNCTION__);
 257             return FALSE; */
 258
 259         default:
 260             /* Unknown format... */
 261             debug_printf("r300: Warning: Got unknown format: %s in %s\n",
 262                 pf_name(format), __FUNCTION__);
 263             break;
 264     }
 265
 266     return FALSE;
 267 }
 268
 269 /* XXX moar targets */
 270 static boolean r300_is_format_supported(struct pipe_screen* pscreen,
 271                                         enum pipe_format format,
 272                                         enum pipe_texture_target target,
 273                                         unsigned tex_usage,
 274                                         unsigned geom_flags)
 275 {
 276     switch (target) {
 277         case PIPE_TEXTURE_2D:
 278             return check_tex_2d_format(format, tex_usage,
 279                 r300_screen(pscreen)->caps->is_r500);
 280         case PIPE_TEXTURE_1D:
 281         case PIPE_TEXTURE_3D:
 282         case PIPE_TEXTURE_CUBE:
 283             debug_printf("r300: Implementation error: Unsupported format "
 284                     "target: %d\n", target);
 285             break;
 286         default:
 287             debug_printf("r300: Fatal: This is not a format target: %d\n",
 288                 target);
 289             assert(0);
 290             break;
 291     }
 292
 293     return FALSE;
 294 }
 295
 296 static struct pipe_transfer*
 297 r300_get_tex_transfer(struct pipe_screen *screen,
 298                       struct pipe_texture *texture,
 299                       unsigned face, unsigned level, unsigned zslice,
 300                       enum pipe_transfer_usage usage, unsigned x, unsigned y,
 301                       unsigned w, unsigned h)
 302 {
 303     struct r300_texture *tex = (struct r300_texture *)texture;
 304     struct r300_transfer *trans;
 305     unsigned offset;  /* in bytes */
 306
 307     /* XXX Add support for these things */
 308     if (texture->target == PIPE_TEXTURE_CUBE) {
 309         debug_printf("PIPE_TEXTURE_CUBE is not yet supported.\n");
 310         /* offset = tex->image_offset[level][face]; */
 311     }
 312     else if (texture->target == PIPE_TEXTURE_3D) {
 313         debug_printf("PIPE_TEXTURE_3D is not yet supported.\n");
 314         /* offset = tex->image_offset[level][zslice]; */
 315     }
 316     else {
 317         offset = tex->offset[level];
 318         assert(face == 0);
 319         assert(zslice == 0);
 320     }
 321
 322     trans = CALLOC_STRUCT(r300_transfer);
 323     if (trans) {
 324         pipe_texture_reference(&trans->transfer.texture, texture);
 325         trans->transfer.format = texture->format;
 326         trans->transfer.width = w;
 327         trans->transfer.height = h;
 328         trans->transfer.block = texture->block;
 329         trans->transfer.nblocksx = texture->nblocksx[level];
 330         trans->transfer.nblocksy = texture->nblocksy[level];
 331         trans->transfer.stride = align(pf_get_stride(&trans->transfer.block,
 332                                                      texture->width[level]), 32);
 333         trans->transfer.usage = usage;
 334         trans->offset = offset;
 335     }
 336     return &trans->transfer;
 337 }
 338
 339 static void
 340 r300_tex_transfer_destroy(struct pipe_transfer *trans)
 341 {
 342    pipe_texture_reference(&trans->texture, NULL);
 343    FREE(trans);
 344 }
 345
 346 static void* r300_transfer_map(struct pipe_screen* screen,
 347                               struct pipe_transfer* transfer)
 348 {
 349     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 350     char* map;
 351     unsigned flags = 0;
 352
 353     if (transfer->usage != PIPE_TRANSFER_WRITE) {
 354         flags |= PIPE_BUFFER_USAGE_CPU_READ;
 355     }
 356     if (transfer->usage != PIPE_TRANSFER_READ) {
 357         flags |= PIPE_BUFFER_USAGE_CPU_WRITE;
 358     }
 359
 360     map = pipe_buffer_map(screen, tex->buffer, flags);
 361
 362     if (!map) {
 363         return NULL;
 364     }
 365
 366     return map + r300_transfer(transfer)->offset +
 367         transfer->y / transfer->block.height * transfer->stride +
 368         transfer->x / transfer->block.width * transfer->block.size;
 369 }
 370
 371 static void r300_transfer_unmap(struct pipe_screen* screen,
 372                                 struct pipe_transfer* transfer)
 373 {
 374     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 375     pipe_buffer_unmap(screen, tex->buffer);
 376 }
 377
 378 static void r300_destroy_screen(struct pipe_screen* pscreen)
 379 {
 380     struct r300_screen* r300screen = r300_screen(pscreen);
 381
 382     FREE(r300screen->caps);
 383     FREE(r300screen);
 384 }
 385
 386 struct pipe_screen* r300_create_screen(struct r300_winsys* r300_winsys)
 387 {
 388     struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
 389     struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
 390
 391     if (!r300screen || !caps)
 392         return NULL;
 393
 394     caps->pci_id = r300_winsys->pci_id;
 395     caps->num_frag_pipes = r300_winsys->gb_pipes;
 396
 397     r300_parse_chipset(caps);
 398
 399     r300screen->caps = caps;
 400     r300screen->screen.winsys = (struct pipe_winsys*)r300_winsys;
 401     r300screen->screen.destroy = r300_destroy_screen;
 402     r300screen->screen.get_name = r300_get_name;
 403     r300screen->screen.get_vendor = r300_get_vendor;
 404     r300screen->screen.get_param = r300_get_param;
 405     r300screen->screen.get_paramf = r300_get_paramf;
 406     r300screen->screen.is_format_supported = r300_is_format_supported;
 407     r300screen->screen.get_tex_transfer = r300_get_tex_transfer;
 408     r300screen->screen.tex_transfer_destroy = r300_tex_transfer_destroy;
 409     r300screen->screen.transfer_map = r300_transfer_map;
 410     r300screen->screen.transfer_unmap = r300_transfer_unmap;
 411
 412     r300_init_screen_texture_functions(&r300screen->screen);
 413     u_simple_screen_init(&r300screen->screen);
 414
 415     return &r300screen->screen;
 416 }