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_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_ANISOTROPIC_FILTER:
 117             return 1;
 118         case PIPE_CAP_POINT_SPRITE:
 119             return 1;
 120         case PIPE_CAP_MAX_RENDER_TARGETS:
 121             return 4;
 122         case PIPE_CAP_OCCLUSION_QUERY:
 123             return 1;
 124         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 125             return 1;
 126         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 127         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 128         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 129             if (r300screen->caps->is_r500) {
 130                 /* 13 == 4096 */
 131                 return 13;
 132             } else {
 133                 /* 12 == 2048 */
 134                 return 12;
 135             }
 136         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 137             return 1;
 138         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 139             return 1;
 140         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 141             return 0;
 142         case PIPE_CAP_TGSI_CONT_SUPPORTED:
 143             return 0;
 144         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 145             return 1;
 146         case PIPE_CAP_SM3:
 147             if (r300screen->caps->is_r500) {
 148                 return 1;
 149             } else {
 150                 return 0;
 151             }
 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 r300_is_format_supported(struct pipe_screen* screen,
 187                                         enum pipe_format format,
 188                                         enum pipe_texture_target target,
 189                                         unsigned usage,
 190                                         unsigned geom_flags)
 191 {
 192     uint32_t retval = 0;
 193     boolean is_r500 = r300_screen(screen)->caps->is_r500;
 194
 195     switch (format) {
 196         /* Supported formats. */
 197         /* Colorbuffer */
 198         case PIPE_FORMAT_A4R4G4B4_UNORM:
 199         case PIPE_FORMAT_R5G6B5_UNORM:
 200         case PIPE_FORMAT_A1R5G5B5_UNORM:
 201             retval = usage &
 202                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 203                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 204                  PIPE_TEXTURE_USAGE_PRIMARY);
 205             break;
 206
 207         /* Texture */
 208         case PIPE_FORMAT_A8R8G8B8_SRGB:
 209         case PIPE_FORMAT_R8G8B8A8_SRGB:
 210         case PIPE_FORMAT_DXT1_RGB:
 211         case PIPE_FORMAT_DXT1_RGBA:
 212         case PIPE_FORMAT_DXT3_RGBA:
 213         case PIPE_FORMAT_DXT5_RGBA:
 214         case PIPE_FORMAT_YCBCR:
 215         case PIPE_FORMAT_L8_UNORM:
 216         case PIPE_FORMAT_A8L8_UNORM:
 217             retval = usage & PIPE_TEXTURE_USAGE_SAMPLER;
 218             break;
 219
 220         /* Colorbuffer or texture */
 221         case PIPE_FORMAT_A8R8G8B8_UNORM:
 222         case PIPE_FORMAT_X8R8G8B8_UNORM:
 223         case PIPE_FORMAT_R8G8B8A8_UNORM:
 224         case PIPE_FORMAT_R8G8B8X8_UNORM:
 225         case PIPE_FORMAT_I8_UNORM:
 226             retval = usage &
 227                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 228                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 229                  PIPE_TEXTURE_USAGE_PRIMARY |
 230                  PIPE_TEXTURE_USAGE_SAMPLER);
 231             break;
 232
 233         /* Z buffer or texture */
 234         case PIPE_FORMAT_Z16_UNORM:
 235             retval = usage &
 236                 (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
 237                  PIPE_TEXTURE_USAGE_SAMPLER);
 238             break;
 239
 240         /* 24bit Z buffer can only be used as a texture on R500. */
 241         case PIPE_FORMAT_Z24X8_UNORM:
 242         /* Z buffer with stencil or texture */
 243         case PIPE_FORMAT_Z24S8_UNORM:
 244             retval = usage &
 245                 (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
 246                  (is_r500 ? PIPE_TEXTURE_USAGE_SAMPLER : 0));
 247             break;
 248
 249         /* Definitely unsupported formats. */
 250         /* Non-usable Z buffer/stencil formats. */
 251         case PIPE_FORMAT_Z32_UNORM:
 252         case PIPE_FORMAT_S8Z24_UNORM:
 253         case PIPE_FORMAT_X8Z24_UNORM:
 254             SCREEN_DBG(r300_screen(screen), DBG_TEX,
 255                        "r300: Note: Got unsupported format: %s in %s\n",
 256                        pf_name(format), __FUNCTION__);
 257             return FALSE;
 258
 259         /* XXX Add all remaining gallium-supported formats,
 260          * see util/u_format.csv. */
 261
 262         default:
 263             /* Unknown format... */
 264             debug_printf("r300: Warning: Got unknown format: %s in %s\n",
 265                 pf_name(format), __FUNCTION__);
 266             break;
 267     }
 268
 269     /* If usage was a mask that contained multiple bits, and not all of them
 270      * are supported, this will catch that and return FALSE.
 271      * e.g. usage = 2 | 4; retval = 4; (retval >= usage) == FALSE
 272      *
 273      * This also returns FALSE for any unknown formats.
 274      */
 275     return (retval >= usage);
 276 }
 277
 278 static struct pipe_transfer*
 279 r300_get_tex_transfer(struct pipe_screen *screen,
 280                       struct pipe_texture *texture,
 281                       unsigned face, unsigned level, unsigned zslice,
 282                       enum pipe_transfer_usage usage, unsigned x, unsigned y,
 283                       unsigned w, unsigned h)
 284 {
 285     struct r300_texture *tex = (struct r300_texture *)texture;
 286     struct r300_transfer *trans;
 287     struct r300_screen *rscreen = r300_screen(screen);
 288     unsigned offset;
 289
 290     offset = r300_texture_get_offset(tex, level, zslice, face);  /* in bytes */
 291
 292     trans = CALLOC_STRUCT(r300_transfer);
 293     if (trans) {
 294         pipe_texture_reference(&trans->transfer.texture, texture);
 295         trans->transfer.x = x;
 296         trans->transfer.y = y;
 297         trans->transfer.width = w;
 298         trans->transfer.height = h;
 299         trans->transfer.stride = r300_texture_get_stride(rscreen, tex, level);
 300         trans->transfer.usage = usage;
 301         trans->transfer.zslice = zslice;
 302         trans->transfer.face = face;
 303
 304         trans->offset = offset;
 305     }
 306     return &trans->transfer;
 307 }
 308
 309 static void
 310 r300_tex_transfer_destroy(struct pipe_transfer *trans)
 311 {
 312    pipe_texture_reference(&trans->texture, NULL);
 313    FREE(trans);
 314 }
 315
 316 static void* r300_transfer_map(struct pipe_screen* screen,
 317                               struct pipe_transfer* transfer)
 318 {
 319     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 320     char* map;
 321     enum pipe_format format = tex->tex.format;
 322
 323     map = pipe_buffer_map(screen, tex->buffer,
 324                           pipe_transfer_buffer_flags(transfer));
 325
 326     if (!map) {
 327         return NULL;
 328     }
 329
 330     return map + r300_transfer(transfer)->offset +
 331         transfer->y / util_format_get_blockheight(format) * transfer->stride +
 332         transfer->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
 333 }
 334
 335 static void r300_transfer_unmap(struct pipe_screen* screen,
 336                                 struct pipe_transfer* transfer)
 337 {
 338     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 339     pipe_buffer_unmap(screen, tex->buffer);
 340 }
 341
 342 static void r300_destroy_screen(struct pipe_screen* pscreen)
 343 {
 344     struct r300_screen* r300screen = r300_screen(pscreen);
 345
 346     FREE(r300screen->caps);
 347     FREE(r300screen);
 348 }
 349
 350 struct pipe_screen* r300_create_screen(struct radeon_winsys* radeon_winsys)
 351 {
 352     struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
 353     struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
 354
 355     if (!r300screen || !caps)
 356         return NULL;
 357
 358     caps->pci_id = radeon_winsys->pci_id;
 359     caps->num_frag_pipes = radeon_winsys->gb_pipes;
 360     caps->num_z_pipes = radeon_winsys->z_pipes;
 361
 362     r300_init_debug(r300screen);
 363     r300_parse_chipset(caps);
 364
 365     r300screen->caps = caps;
 366     r300screen->screen.winsys = (struct pipe_winsys*)radeon_winsys;
 367     r300screen->screen.destroy = r300_destroy_screen;
 368     r300screen->screen.get_name = r300_get_name;
 369     r300screen->screen.get_vendor = r300_get_vendor;
 370     r300screen->screen.get_param = r300_get_param;
 371     r300screen->screen.get_paramf = r300_get_paramf;
 372     r300screen->screen.is_format_supported = r300_is_format_supported;
 373     r300screen->screen.get_tex_transfer = r300_get_tex_transfer;
 374     r300screen->screen.tex_transfer_destroy = r300_tex_transfer_destroy;
 375     r300screen->screen.transfer_map = r300_transfer_map;
 376     r300screen->screen.transfer_unmap = r300_transfer_unmap;
 377
 378     r300_init_screen_texture_functions(&r300screen->screen);
 379     u_simple_screen_init(&r300screen->screen);
 380
 381     return &r300screen->screen;
 382 }