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
  34 /* Return the identifier behind whom the brave coders responsible for this
  35  * amalgamation of code, sweat, and duct tape, routinely obscure their names.
  36  *
  37  * ...I should have just put "Corbin Simpson", but I'm not that cool.
  38  *
  39  * (Or egotistical. Yet.) */
  40 static const char* r300_get_vendor(struct pipe_screen* pscreen)
  41 {
  42     return "X.Org R300 Project";
  43 }
  44
  45 static const char* chip_families[] = {
  46     "R300",
  47     "R350",
  48     "R360",
  49     "RV350",
  50     "RV370",
  51     "RV380",
  52     "R420",
  53     "R423",
  54     "R430",
  55     "R480",
  56     "R481",
  57     "RV410",
  58     "RS400",
  59     "RC410",
  60     "RS480",
  61     "RS482",
  62     "RS600",
  63     "RS690",
  64     "RS740",
  65     "RV515",
  66     "R520",
  67     "RV530",
  68     "R580",
  69     "RV560",
  70     "RV570"
  71 };
  72
  73 static const char* r300_get_name(struct pipe_screen* pscreen)
  74 {
  75     struct r300_screen* r300screen = r300_screen(pscreen);
  76
  77     return chip_families[r300screen->caps->family];
  78 }
  79
  80 static int r300_get_param(struct pipe_screen* pscreen, int param)
  81 {
  82     struct r300_screen* r300screen = r300_screen(pscreen);
  83
  84     switch (param) {
  85         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  86         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  87             /* XXX I'm told this goes up to 16 */
  88             return 8;
  89         case PIPE_CAP_NPOT_TEXTURES:
  90             /* XXX enable now to get GL2.1 API,
  91              * figure out later how to emulate this */
  92             return 1;
  93         case PIPE_CAP_TWO_SIDED_STENCIL:
  94             if (r300screen->caps->is_r500) {
  95                 return 1;
  96             } else {
  97                 return 0;
  98             }
  99         case PIPE_CAP_GLSL:
 100             /* I'll be frank. This is a lie.
 101              *
 102              * We don't truly support GLSL on any of this driver's chipsets.
 103              * To be fair, no chipset supports the full GLSL specification
 104              * to the best of our knowledge, but some of the less esoteric
 105              * features are still missing here.
 106              *
 107              * Rather than cripple ourselves intentionally, I'm going to set
 108              * this flag, and as Gallium's interface continues to change, I
 109              * hope that this single monolithic GLSL enable can slowly get
 110              * split down into many different pieces and the state tracker
 111              * will handle fallbacks transparently, like it should.
 112              *
 113              * ~ C.
 114              */
 115             return 1;
 116         case PIPE_CAP_DUAL_SOURCE_BLEND:
 117             return 0;
 118         case PIPE_CAP_ANISOTROPIC_FILTER:
 119             return 1;
 120         case PIPE_CAP_POINT_SPRITE:
 121             return 1;
 122         case PIPE_CAP_MAX_RENDER_TARGETS:
 123             return 4;
 124         case PIPE_CAP_OCCLUSION_QUERY:
 125             return 1;
 126         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 127             return 1;
 128         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 129         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 130         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 131             if (r300screen->caps->is_r500) {
 132                 /* 13 == 4096 */
 133                 return 13;
 134             } else {
 135                 /* 12 == 2048 */
 136                 return 12;
 137             }
 138         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 139             return 1;
 140         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 141             return 1;
 142         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 143             return 0;
 144         case PIPE_CAP_TGSI_CONT_SUPPORTED:
 145             return 0;
 146         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 147             return 1;
 148         case PIPE_CAP_SM3:
 149             if (r300screen->caps->is_r500) {
 150                 return 1;
 151             } else {
 152                 return 0;
 153             }
 154         case PIPE_CAP_INDEP_BLEND_ENABLE:
 155             if (r300screen->caps->is_r500) {
 156                 return 1;
 157             } else {
 158                 return 0;
 159             }
 160         case PIPE_CAP_INDEP_BLEND_FUNC:
 161             return 0;
 162         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 163         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 164             return 1;
 165         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 166         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 167             return 0;
 168         default:
 169             debug_printf("r300: Implementation error: Bad param %d\n",
 170                 param);
 171             return 0;
 172     }
 173 }
 174
 175 static float r300_get_paramf(struct pipe_screen* pscreen, int param)
 176 {
 177     struct r300_screen* r300screen = r300_screen(pscreen);
 178
 179     switch (param) {
 180         case PIPE_CAP_MAX_LINE_WIDTH:
 181         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 182         case PIPE_CAP_MAX_POINT_WIDTH:
 183         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 184             /* The maximum dimensions of the colorbuffer are our practical
 185              * rendering limits. 2048 pixels should be enough for anybody. */
 186             if (r300screen->caps->is_r500) {
 187                 return 4096.0f;
 188             } else {
 189                 return 2048.0f;
 190             }
 191         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 192             return 16.0f;
 193         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 194             return 16.0f;
 195         default:
 196             debug_printf("r300: Implementation error: Bad paramf %d\n",
 197                 param);
 198             return 0.0f;
 199     }
 200 }
 201
 202 static boolean r300_is_format_supported(struct pipe_screen* screen,
 203                                         enum pipe_format format,
 204                                         enum pipe_texture_target target,
 205                                         unsigned usage,
 206                                         unsigned geom_flags)
 207 {
 208     uint32_t retval = 0;
 209     boolean is_r500 = r300_screen(screen)->caps->is_r500;
 210
 211     if (target >= PIPE_MAX_TEXTURE_TYPES) {
 212         debug_printf("r300: Implementation error: Received bogus texture "
 213             "target %d in %s\n", target, __FUNCTION__);
 214         return FALSE;
 215     }
 216
 217     switch (format) {
 218         /* Supported formats. */
 219         /* Colorbuffer */
 220         case PIPE_FORMAT_A4R4G4B4_UNORM:
 221         case PIPE_FORMAT_R5G6B5_UNORM:
 222         case PIPE_FORMAT_A1R5G5B5_UNORM:
 223         case PIPE_FORMAT_A8_UNORM:
 224         case PIPE_FORMAT_L8_UNORM:
 225             retval = usage &
 226                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 227                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 228                  PIPE_TEXTURE_USAGE_PRIMARY);
 229             break;
 230
 231         /* Texture */
 232         case PIPE_FORMAT_A8R8G8B8_SRGB:
 233         case PIPE_FORMAT_R8G8B8A8_SRGB:
 234         case PIPE_FORMAT_DXT1_RGB:
 235         case PIPE_FORMAT_DXT1_RGBA:
 236         case PIPE_FORMAT_DXT3_RGBA:
 237         case PIPE_FORMAT_DXT5_RGBA:
 238         case PIPE_FORMAT_YCBCR:
 239         case PIPE_FORMAT_A8L8_UNORM:
 240             retval = usage & PIPE_TEXTURE_USAGE_SAMPLER;
 241             break;
 242
 243         /* Colorbuffer or texture */
 244         case PIPE_FORMAT_A8R8G8B8_UNORM:
 245         case PIPE_FORMAT_X8R8G8B8_UNORM:
 246         case PIPE_FORMAT_R8G8B8A8_UNORM:
 247         case PIPE_FORMAT_R8G8B8X8_UNORM:
 248         case PIPE_FORMAT_I8_UNORM:
 249             retval = usage &
 250                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 251                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 252                  PIPE_TEXTURE_USAGE_PRIMARY |
 253                  PIPE_TEXTURE_USAGE_SAMPLER);
 254             break;
 255
 256         /* Z buffer or texture */
 257         case PIPE_FORMAT_Z16_UNORM:
 258             retval = usage &
 259                 (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
 260                  PIPE_TEXTURE_USAGE_SAMPLER);
 261             break;
 262
 263         /* 24bit Z buffer can only be used as a texture on R500. */
 264         case PIPE_FORMAT_Z24X8_UNORM:
 265         /* Z buffer with stencil or texture */
 266         case PIPE_FORMAT_Z24S8_UNORM:
 267             retval = usage &
 268                 (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
 269                  (is_r500 ? PIPE_TEXTURE_USAGE_SAMPLER : 0));
 270             break;
 271
 272         /* Definitely unsupported formats. */
 273         /* Non-usable Z buffer/stencil formats. */
 274         case PIPE_FORMAT_Z32_UNORM:
 275         case PIPE_FORMAT_S8Z24_UNORM:
 276         case PIPE_FORMAT_X8Z24_UNORM:
 277             SCREEN_DBG(r300_screen(screen), DBG_TEX,
 278                        "r300: Note: Got unsupported format: %s in %s\n",
 279                        pf_name(format), __FUNCTION__);
 280             return FALSE;
 281
 282         /* XXX Add all remaining gallium-supported formats,
 283          * see util/u_format.csv. */
 284
 285         default:
 286             /* Unknown format... */
 287             debug_printf("r300: Warning: Got unknown format: %s in %s\n",
 288                 pf_name(format), __FUNCTION__);
 289             break;
 290     }
 291
 292     /* If usage was a mask that contained multiple bits, and not all of them
 293      * are supported, this will catch that and return FALSE.
 294      * e.g. usage = 2 | 4; retval = 4; (retval >= usage) == FALSE
 295      *
 296      * This also returns FALSE for any unknown formats.
 297      */
 298     return (retval >= usage);
 299 }
 300
 301 static struct pipe_transfer*
 302 r300_get_tex_transfer(struct pipe_screen *screen,
 303                       struct pipe_texture *texture,
 304                       unsigned face, unsigned level, unsigned zslice,
 305                       enum pipe_transfer_usage usage, unsigned x, unsigned y,
 306                       unsigned w, unsigned h)
 307 {
 308     struct r300_texture *tex = (struct r300_texture *)texture;
 309     struct r300_transfer *trans;
 310     struct r300_screen *rscreen = r300_screen(screen);
 311     unsigned offset;
 312
 313     offset = r300_texture_get_offset(tex, level, zslice, face);  /* in bytes */
 314
 315     trans = CALLOC_STRUCT(r300_transfer);
 316     if (trans) {
 317         pipe_texture_reference(&trans->transfer.texture, texture);
 318         trans->transfer.x = x;
 319         trans->transfer.y = y;
 320         trans->transfer.width = w;
 321         trans->transfer.height = h;
 322         trans->transfer.stride = r300_texture_get_stride(rscreen, tex, level);
 323         trans->transfer.usage = usage;
 324         trans->transfer.zslice = zslice;
 325         trans->transfer.face = face;
 326
 327         trans->offset = offset;
 328     }
 329     return &trans->transfer;
 330 }
 331
 332 static void
 333 r300_tex_transfer_destroy(struct pipe_transfer *trans)
 334 {
 335    pipe_texture_reference(&trans->texture, NULL);
 336    FREE(trans);
 337 }
 338
 339 static void* r300_transfer_map(struct pipe_screen* screen,
 340                               struct pipe_transfer* transfer)
 341 {
 342     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 343     char* map;
 344     enum pipe_format format = tex->tex.format;
 345
 346     map = pipe_buffer_map(screen, tex->buffer,
 347                           pipe_transfer_buffer_flags(transfer));
 348
 349     if (!map) {
 350         return NULL;
 351     }
 352
 353     return map + r300_transfer(transfer)->offset +
 354         transfer->y / util_format_get_blockheight(format) * transfer->stride +
 355         transfer->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
 356 }
 357
 358 static void r300_transfer_unmap(struct pipe_screen* screen,
 359                                 struct pipe_transfer* transfer)
 360 {
 361     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 362     pipe_buffer_unmap(screen, tex->buffer);
 363 }
 364
 365 static void r300_destroy_screen(struct pipe_screen* pscreen)
 366 {
 367     struct r300_screen* r300screen = r300_screen(pscreen);
 368
 369     FREE(r300screen->caps);
 370     FREE(r300screen);
 371 }
 372
 373 struct pipe_screen* r300_create_screen(struct radeon_winsys* radeon_winsys)
 374 {
 375     struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
 376     struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
 377
 378     if (!r300screen || !caps) {
 379         FREE(r300screen);
 380         FREE(caps);
 381         return NULL;
 382     }
 383
 384     caps->pci_id = radeon_winsys->pci_id;
 385     caps->num_frag_pipes = radeon_winsys->gb_pipes;
 386     caps->num_z_pipes = radeon_winsys->z_pipes;
 387
 388     r300_init_debug(r300screen);
 389     r300_parse_chipset(caps);
 390
 391     r300screen->caps = caps;
 392     r300screen->screen.winsys = (struct pipe_winsys*)radeon_winsys;
 393     r300screen->screen.destroy = r300_destroy_screen;
 394     r300screen->screen.get_name = r300_get_name;
 395     r300screen->screen.get_vendor = r300_get_vendor;
 396     r300screen->screen.get_param = r300_get_param;
 397     r300screen->screen.get_paramf = r300_get_paramf;
 398     r300screen->screen.is_format_supported = r300_is_format_supported;
 399     r300screen->screen.get_tex_transfer = r300_get_tex_transfer;
 400     r300screen->screen.tex_transfer_destroy = r300_tex_transfer_destroy;
 401     r300screen->screen.transfer_map = r300_transfer_map;
 402     r300screen->screen.transfer_unmap = r300_transfer_unmap;
 403
 404     r300_init_screen_texture_functions(&r300screen->screen);
 405     u_simple_screen_init(&r300screen->screen);
 406
 407     return &r300screen->screen;
 408 }