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 "util/u_inlines.h"
  24 #include "util/u_format.h"
  25 #include "util/u_memory.h"
  26 #include "util/u_simple_screen.h"
  27
  28 #include "r300_context.h"
  29 #include "r300_screen.h"
  30 #include "r300_texture.h"
  31
  32 #include "radeon_winsys.h"
  33 #include "r300_winsys.h"
  34
  35 /* Return the identifier behind whom the brave coders responsible for this
  36  * amalgamation of code, sweat, and duct tape, routinely obscure their names.
  37  *
  38  * ...I should have just put "Corbin Simpson", but I'm not that cool.
  39  *
  40  * (Or egotistical. Yet.) */
  41 static const char* r300_get_vendor(struct pipe_screen* pscreen)
  42 {
  43     return "X.Org R300 Project";
  44 }
  45
  46 static const char* chip_families[] = {
  47     "R300",
  48     "R350",
  49     "R360",
  50     "RV350",
  51     "RV370",
  52     "RV380",
  53     "R420",
  54     "R423",
  55     "R430",
  56     "R480",
  57     "R481",
  58     "RV410",
  59     "RS400",
  60     "RC410",
  61     "RS480",
  62     "RS482",
  63     "RS600",
  64     "RS690",
  65     "RS740",
  66     "RV515",
  67     "R520",
  68     "RV530",
  69     "R580",
  70     "RV560",
  71     "RV570"
  72 };
  73
  74 static const char* r300_get_name(struct pipe_screen* pscreen)
  75 {
  76     struct r300_screen* r300screen = r300_screen(pscreen);
  77
  78     return chip_families[r300screen->caps->family];
  79 }
  80
  81 static int r300_get_param(struct pipe_screen* pscreen, int param)
  82 {
  83     struct r300_screen* r300screen = r300_screen(pscreen);
  84
  85     switch (param) {
  86         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  87         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  88             /* XXX I'm told this goes up to 16 */
  89             return 8;
  90         case PIPE_CAP_NPOT_TEXTURES:
  91             /* XXX enable now to get GL2.1 API,
  92              * figure out later how to emulate this */
  93             return 1;
  94         case PIPE_CAP_TWO_SIDED_STENCIL:
  95             if (r300screen->caps->is_r500) {
  96                 return 1;
  97             } else {
  98                 return 0;
  99             }
 100         case PIPE_CAP_GLSL:
 101             /* I'll be frank. This is a lie.
 102              *
 103              * We don't truly support GLSL on any of this driver's chipsets.
 104              * To be fair, no chipset supports the full GLSL specification
 105              * to the best of our knowledge, but some of the less esoteric
 106              * features are still missing here.
 107              *
 108              * Rather than cripple ourselves intentionally, I'm going to set
 109              * this flag, and as Gallium's interface continues to change, I
 110              * hope that this single monolithic GLSL enable can slowly get
 111              * split down into many different pieces and the state tracker
 112              * will handle fallbacks transparently, like it should.
 113              *
 114              * ~ C.
 115              */
 116             return 1;
 117         case PIPE_CAP_DUAL_SOURCE_BLEND:
 118             return 0;
 119         case PIPE_CAP_ANISOTROPIC_FILTER:
 120             return 1;
 121         case PIPE_CAP_POINT_SPRITE:
 122             return 1;
 123         case PIPE_CAP_MAX_RENDER_TARGETS:
 124             return 4;
 125         case PIPE_CAP_OCCLUSION_QUERY:
 126             return 1;
 127         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 128             return 1;
 129         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 130         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 131         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 132             if (r300screen->caps->is_r500) {
 133                 /* 13 == 4096 */
 134                 return 13;
 135             } else {
 136                 /* 12 == 2048 */
 137                 return 12;
 138             }
 139         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 140             return 1;
 141         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 142             return 1;
 143         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 144             return 0;
 145         case PIPE_CAP_TGSI_CONT_SUPPORTED:
 146             return 0;
 147         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 148             return 1;
 149         case PIPE_CAP_SM3:
 150             if (r300screen->caps->is_r500) {
 151                 return 1;
 152             } else {
 153                 return 0;
 154             }
 155         case PIPE_CAP_INDEP_BLEND_ENABLE:
 156             if (r300screen->caps->is_r500) {
 157                 return 1;
 158             } else {
 159                 return 0;
 160             }
 161         case PIPE_CAP_INDEP_BLEND_FUNC:
 162             return 0;
 163         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 164         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 165             return 1;
 166         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 167         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 168             return 0;
 169         default:
 170             debug_printf("r300: Implementation error: Bad param %d\n",
 171                 param);
 172             return 0;
 173     }
 174 }
 175
 176 static float r300_get_paramf(struct pipe_screen* pscreen, int param)
 177 {
 178     struct r300_screen* r300screen = r300_screen(pscreen);
 179
 180     switch (param) {
 181         case PIPE_CAP_MAX_LINE_WIDTH:
 182         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 183         case PIPE_CAP_MAX_POINT_WIDTH:
 184         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 185             /* The maximum dimensions of the colorbuffer are our practical
 186              * rendering limits. 2048 pixels should be enough for anybody. */
 187             if (r300screen->caps->is_r500) {
 188                 return 4096.0f;
 189             } else if (r300screen->caps->is_r400) {
 190                 return 4021.0f;
 191             } else {
 192                 return 2560.0f;
 193             }
 194         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 195             return 16.0f;
 196         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 197             return 16.0f;
 198         default:
 199             debug_printf("r300: Implementation error: Bad paramf %d\n",
 200                 param);
 201             return 0.0f;
 202     }
 203 }
 204
 205 static boolean r300_is_format_supported(struct pipe_screen* screen,
 206                                         enum pipe_format format,
 207                                         enum pipe_texture_target target,
 208                                         unsigned usage,
 209                                         unsigned geom_flags)
 210 {
 211     uint32_t retval = 0;
 212     boolean is_r500 = r300_screen(screen)->caps->is_r500;
 213
 214     if (target >= PIPE_MAX_TEXTURE_TYPES) {
 215         debug_printf("r300: Implementation error: Received bogus texture "
 216             "target %d in %s\n", target, __FUNCTION__);
 217         return FALSE;
 218     }
 219
 220     switch (format) {
 221         /* Supported formats. */
 222         /* Colorbuffer */
 223         case PIPE_FORMAT_A4R4G4B4_UNORM:
 224         case PIPE_FORMAT_R5G6B5_UNORM:
 225         case PIPE_FORMAT_A1R5G5B5_UNORM:
 226         case PIPE_FORMAT_A8_UNORM:
 227         case PIPE_FORMAT_L8_UNORM:
 228             retval = usage &
 229                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 230                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 231                  PIPE_TEXTURE_USAGE_PRIMARY);
 232             break;
 233
 234         /* Texture */
 235         case PIPE_FORMAT_A8R8G8B8_SRGB:
 236         case PIPE_FORMAT_R8G8B8A8_SRGB:
 237         case PIPE_FORMAT_DXT1_RGB:
 238         case PIPE_FORMAT_DXT1_RGBA:
 239         case PIPE_FORMAT_DXT3_RGBA:
 240         case PIPE_FORMAT_DXT5_RGBA:
 241         case PIPE_FORMAT_YCBCR:
 242         case PIPE_FORMAT_L8_SRGB:
 243         case PIPE_FORMAT_A8L8_SRGB:
 244         case PIPE_FORMAT_A8L8_UNORM:
 245             retval = usage & PIPE_TEXTURE_USAGE_SAMPLER;
 246             break;
 247
 248         /* Colorbuffer or texture */
 249         case PIPE_FORMAT_A8R8G8B8_UNORM:
 250         case PIPE_FORMAT_X8R8G8B8_UNORM:
 251         case PIPE_FORMAT_R8G8B8A8_UNORM:
 252         case PIPE_FORMAT_R8G8B8X8_UNORM:
 253         case PIPE_FORMAT_I8_UNORM:
 254             retval = usage &
 255                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 256                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 257                  PIPE_TEXTURE_USAGE_PRIMARY |
 258                  PIPE_TEXTURE_USAGE_SAMPLER);
 259             break;
 260
 261         /* Z buffer or texture */
 262         case PIPE_FORMAT_Z16_UNORM:
 263             retval = usage &
 264                 (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
 265                  PIPE_TEXTURE_USAGE_SAMPLER);
 266             break;
 267
 268         /* 24bit Z buffer can only be used as a texture on R500. */
 269         case PIPE_FORMAT_Z24X8_UNORM:
 270         /* Z buffer with stencil or texture */
 271         case PIPE_FORMAT_Z24S8_UNORM:
 272             retval = usage &
 273                 (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
 274                  (is_r500 ? PIPE_TEXTURE_USAGE_SAMPLER : 0));
 275             break;
 276
 277         /* Definitely unsupported formats. */
 278         /* Non-usable Z buffer/stencil formats. */
 279         case PIPE_FORMAT_Z32_UNORM:
 280         case PIPE_FORMAT_S8Z24_UNORM:
 281         case PIPE_FORMAT_X8Z24_UNORM:
 282             SCREEN_DBG(r300_screen(screen), DBG_TEX,
 283                        "r300: Note: Got unsupported format: %s in %s\n",
 284                        pf_name(format), __FUNCTION__);
 285             return FALSE;
 286
 287         /* XXX Add all remaining gallium-supported formats,
 288          * see util/u_format.csv. */
 289
 290         default:
 291             /* Unknown format... */
 292             debug_printf("r300: Warning: Got unknown format: %s in %s\n",
 293                 pf_name(format), __FUNCTION__);
 294             break;
 295     }
 296
 297     /* If usage was a mask that contained multiple bits, and not all of them
 298      * are supported, this will catch that and return FALSE.
 299      * e.g. usage = 2 | 4; retval = 4; (retval >= usage) == FALSE
 300      *
 301      * This also returns FALSE for any unknown formats.
 302      */
 303     return (retval >= usage);
 304 }
 305
 306 static struct pipe_transfer*
 307 r300_get_tex_transfer(struct pipe_screen *screen,
 308                       struct pipe_texture *texture,
 309                       unsigned face, unsigned level, unsigned zslice,
 310                       enum pipe_transfer_usage usage, unsigned x, unsigned y,
 311                       unsigned w, unsigned h)
 312 {
 313     struct r300_texture *tex = (struct r300_texture *)texture;
 314     struct r300_transfer *trans;
 315     struct r300_screen *rscreen = r300_screen(screen);
 316     unsigned offset;
 317
 318     offset = r300_texture_get_offset(tex, level, zslice, face);  /* in bytes */
 319
 320     trans = CALLOC_STRUCT(r300_transfer);
 321     if (trans) {
 322         pipe_texture_reference(&trans->transfer.texture, texture);
 323         trans->transfer.x = x;
 324         trans->transfer.y = y;
 325         trans->transfer.width = w;
 326         trans->transfer.height = h;
 327         trans->transfer.stride = r300_texture_get_stride(rscreen, tex, level);
 328         trans->transfer.usage = usage;
 329         trans->transfer.zslice = zslice;
 330         trans->transfer.face = face;
 331
 332         trans->offset = offset;
 333     }
 334     return &trans->transfer;
 335 }
 336
 337 static void
 338 r300_tex_transfer_destroy(struct pipe_transfer *trans)
 339 {
 340    pipe_texture_reference(&trans->texture, NULL);
 341    FREE(trans);
 342 }
 343
 344 static void* r300_transfer_map(struct pipe_screen* screen,
 345                               struct pipe_transfer* transfer)
 346 {
 347     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 348     char* map;
 349     enum pipe_format format = tex->tex.format;
 350
 351     map = pipe_buffer_map(screen, tex->buffer,
 352                           pipe_transfer_buffer_flags(transfer));
 353
 354     if (!map) {
 355         return NULL;
 356     }
 357
 358     return map + r300_transfer(transfer)->offset +
 359         transfer->y / util_format_get_blockheight(format) * transfer->stride +
 360         transfer->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
 361 }
 362
 363 static void r300_transfer_unmap(struct pipe_screen* screen,
 364                                 struct pipe_transfer* transfer)
 365 {
 366     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 367     pipe_buffer_unmap(screen, tex->buffer);
 368 }
 369
 370 static void r300_destroy_screen(struct pipe_screen* pscreen)
 371 {
 372     struct r300_screen* r300screen = r300_screen(pscreen);
 373
 374     FREE(r300screen->caps);
 375     FREE(r300screen);
 376 }
 377
 378 struct pipe_screen* r300_create_screen(struct radeon_winsys* radeon_winsys)
 379 {
 380     struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
 381     struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
 382
 383     if (!r300screen || !caps) {
 384         FREE(r300screen);
 385         FREE(caps);
 386         return NULL;
 387     }
 388
 389     caps->pci_id = radeon_winsys->pci_id;
 390     caps->num_frag_pipes = radeon_winsys->gb_pipes;
 391     caps->num_z_pipes = radeon_winsys->z_pipes;
 392
 393     r300_init_debug(r300screen);
 394     r300_parse_chipset(caps);
 395
 396     r300screen->caps = caps;
 397     r300screen->radeon_winsys = radeon_winsys;
 398     r300screen->screen.winsys = (struct pipe_winsys*)radeon_winsys;
 399     r300screen->screen.destroy = r300_destroy_screen;
 400     r300screen->screen.get_name = r300_get_name;
 401     r300screen->screen.get_vendor = r300_get_vendor;
 402     r300screen->screen.get_param = r300_get_param;
 403     r300screen->screen.get_paramf = r300_get_paramf;
 404     r300screen->screen.is_format_supported = r300_is_format_supported;
 405     r300screen->screen.context_create = r300_create_context;
 406     r300screen->screen.get_tex_transfer = r300_get_tex_transfer;
 407     r300screen->screen.tex_transfer_destroy = r300_tex_transfer_destroy;
 408     r300screen->screen.transfer_map = r300_transfer_map;
 409     r300screen->screen.transfer_unmap = r300_transfer_unmap;
 410
 411     r300_init_screen_texture_functions(&r300screen->screen);
 412     u_simple_screen_init(&r300screen->screen);
 413
 414     return &r300screen->screen;
 415 }