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             /* XXX I'm told this goes up to 16 */
  87             return 8;
  88         case PIPE_CAP_NPOT_TEXTURES:
  89             /* XXX enable now to get GL2.1 API,
  90              * figure out later how to emulate this */
  91             return 1;
  92         case PIPE_CAP_TWO_SIDED_STENCIL:
  93             if (r300screen->caps->is_r500) {
  94                 return 1;
  95             } else {
  96                 return 0;
  97             }
  98         case PIPE_CAP_GLSL:
  99             /* I'll be frank. This is a lie.
 100              *
 101              * We don't truly support GLSL on any of this driver's chipsets.
 102              * To be fair, no chipset supports the full GLSL specification
 103              * to the best of our knowledge, but some of the less esoteric
 104              * features are still missing here.
 105              *
 106              * Rather than cripple ourselves intentionally, I'm going to set
 107              * this flag, and as Gallium's interface continues to change, I
 108              * hope that this single monolithic GLSL enable can slowly get
 109              * split down into many different pieces and the state tracker
 110              * will handle fallbacks transparently, like it should.
 111              *
 112              * ~ C.
 113              */
 114             return 1;
 115         case PIPE_CAP_ANISOTROPIC_FILTER:
 116             return 1;
 117         case PIPE_CAP_POINT_SPRITE:
 118             return 1;
 119         case PIPE_CAP_MAX_RENDER_TARGETS:
 120             return 4;
 121         case PIPE_CAP_OCCLUSION_QUERY:
 122             return 1;
 123         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 124             return 1;
 125         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 126         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 127         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 128             if (r300screen->caps->is_r500) {
 129                 /* 13 == 4096 */
 130                 return 13;
 131             } else {
 132                 /* 12 == 2048 */
 133                 return 12;
 134             }
 135         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 136             return 1;
 137         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 138             return 1;
 139         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 140             return 0;
 141         case PIPE_CAP_TGSI_CONT_SUPPORTED:
 142             return 0;
 143         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 144             return 1;
 145         case PIPE_CAP_SM3:
 146             return 1;
 147         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 148             return 8;
 149         default:
 150             debug_printf("r300: Implementation error: Bad param %d\n",
 151                 param);
 152             return 0;
 153     }
 154 }
 155
 156 static float r300_get_paramf(struct pipe_screen* pscreen, int param)
 157 {
 158     struct r300_screen* r300screen = r300_screen(pscreen);
 159
 160     switch (param) {
 161         case PIPE_CAP_MAX_LINE_WIDTH:
 162         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 163         case PIPE_CAP_MAX_POINT_WIDTH:
 164         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 165             /* The maximum dimensions of the colorbuffer are our practical
 166              * rendering limits. 2048 pixels should be enough for anybody. */
 167             if (r300screen->caps->is_r500) {
 168                 return 4096.0f;
 169             } else {
 170                 return 2048.0f;
 171             }
 172         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 173             return 16.0f;
 174         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 175             return 16.0f;
 176         default:
 177             debug_printf("r300: Implementation error: Bad paramf %d\n",
 178                 param);
 179             return 0.0f;
 180     }
 181 }
 182
 183 static boolean check_tex_format(enum pipe_format format, uint32_t usage,
 184                                 boolean is_r500)
 185 {
 186     uint32_t retval = 0;
 187
 188     switch (format) {
 189         /* Supported formats. */
 190         /* Colorbuffer */
 191         case PIPE_FORMAT_A4R4G4B4_UNORM:
 192         case PIPE_FORMAT_R5G6B5_UNORM:
 193         case PIPE_FORMAT_A1R5G5B5_UNORM:
 194             retval = usage &
 195                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 196                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 197                  PIPE_TEXTURE_USAGE_PRIMARY);
 198             break;
 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         case PIPE_FORMAT_L8_UNORM:
 209         case PIPE_FORMAT_A8L8_UNORM:
 210             retval = usage & PIPE_TEXTURE_USAGE_SAMPLER;
 211             break;
 212
 213         /* Colorbuffer or texture */
 214         case PIPE_FORMAT_A8R8G8B8_UNORM:
 215         case PIPE_FORMAT_X8R8G8B8_UNORM:
 216         case PIPE_FORMAT_R8G8B8A8_UNORM:
 217         case PIPE_FORMAT_R8G8B8X8_UNORM:
 218         case PIPE_FORMAT_I8_UNORM:
 219             retval = usage &
 220                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 221                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 222                  PIPE_TEXTURE_USAGE_PRIMARY |
 223                  PIPE_TEXTURE_USAGE_SAMPLER);
 224             break;
 225
 226         /* Z buffer or texture */
 227         case PIPE_FORMAT_Z16_UNORM:
 228             retval = usage &
 229                 (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
 230                  PIPE_TEXTURE_USAGE_SAMPLER);
 231             break;
 232
 233         /* 24bit Z buffer can only be used as a texture on R500. */
 234         case PIPE_FORMAT_Z24X8_UNORM:
 235         /* Z buffer with stencil or texture */
 236         case PIPE_FORMAT_Z24S8_UNORM:
 237             retval = usage &
 238                 (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
 239                  (is_r500 ? PIPE_TEXTURE_USAGE_SAMPLER : 0));
 240             break;
 241
 242         /* Definitely unsupported formats. */
 243         /* Non-usable Z buffer/stencil formats. */
 244         case PIPE_FORMAT_Z32_UNORM:
 245         case PIPE_FORMAT_S8Z24_UNORM:
 246         case PIPE_FORMAT_X8Z24_UNORM:
 247             debug_printf("r300: Note: Got unsupported format: %s in %s\n",
 248                 pf_name(format), __FUNCTION__);
 249             return FALSE;
 250
 251         /* XXX These don't even exist
 252         case PIPE_FORMAT_A32R32G32B32:
 253         case PIPE_FORMAT_A16R16G16B16: */
 254         /* XXX What the deuce is UV88? (r3xx accel page 14)
 255             debug_printf("r300: Warning: Got unimplemented format: %s in %s\n",
 256                 pf_name(format), __FUNCTION__);
 257             return FALSE; */
 258
 259         /* XXX Supported yet unimplemented r5xx formats: */
 260         /* XXX Again, what is UV1010 this time? (r5xx accel page 148) */
 261         /* XXX Even more that don't exist
 262         case PIPE_FORMAT_A10R10G10B10_UNORM:
 263         case PIPE_FORMAT_A2R10G10B10_UNORM:
 264         case PIPE_FORMAT_I10_UNORM:
 265             debug_printf(
 266                 "r300: Warning: Got unimplemented r500 format: %s in %s\n",
 267                 pf_name(format), __FUNCTION__);
 268             return FALSE; */
 269
 270         default:
 271             /* Unknown format... */
 272             debug_printf("r300: Warning: Got unknown format: %s in %s\n",
 273                 pf_name(format), __FUNCTION__);
 274             break;
 275     }
 276
 277     /* If usage was a mask that contained multiple bits, and not all of them
 278      * are supported, this will catch that and return FALSE.
 279      * e.g. usage = 2 | 4; retval = 4; (retval >= usage) == FALSE
 280      *
 281      * This also returns FALSE for any unknown formats.
 282      */
 283     return (retval >= usage);
 284 }
 285
 286 static boolean r300_is_format_supported(struct pipe_screen* pscreen,
 287                                         enum pipe_format format,
 288                                         enum pipe_texture_target target,
 289                                         unsigned tex_usage,
 290                                         unsigned geom_flags)
 291 {
 292     switch (target) {
 293         case PIPE_TEXTURE_1D:   /* handle 1D textures as 2D ones */
 294         case PIPE_TEXTURE_2D:
 295         case PIPE_TEXTURE_3D:
 296         case PIPE_TEXTURE_CUBE:
 297             return check_tex_format(format, tex_usage,
 298                 r300_screen(pscreen)->caps->is_r500);
 299
 300         default:
 301             debug_printf("r300: Fatal: This is not a format target: %d\n",
 302                 target);
 303             assert(0);
 304             break;
 305     }
 306
 307     return FALSE;
 308 }
 309
 310 static struct pipe_transfer*
 311 r300_get_tex_transfer(struct pipe_screen *screen,
 312                       struct pipe_texture *texture,
 313                       unsigned face, unsigned level, unsigned zslice,
 314                       enum pipe_transfer_usage usage, unsigned x, unsigned y,
 315                       unsigned w, unsigned h)
 316 {
 317     struct r300_texture *tex = (struct r300_texture *)texture;
 318     struct r300_transfer *trans;
 319     unsigned offset;
 320
 321     offset = r300_texture_get_offset(tex, level, zslice, face);  /* in bytes */
 322
 323     trans = CALLOC_STRUCT(r300_transfer);
 324     if (trans) {
 325         pipe_texture_reference(&trans->transfer.texture, texture);
 326         trans->transfer.x = x;
 327         trans->transfer.y = y;
 328         trans->transfer.width = w;
 329         trans->transfer.height = h;
 330         trans->transfer.stride = r300_texture_get_stride(tex, level);
 331         trans->transfer.usage = usage;
 332
 333         /* XXX not sure whether it's required to set these two,
 334                the driver doesn't use them */
 335         trans->transfer.zslice = zslice;
 336         trans->transfer.face = face;
 337
 338         trans->offset = offset;
 339     }
 340     return &trans->transfer;
 341 }
 342
 343 static void
 344 r300_tex_transfer_destroy(struct pipe_transfer *trans)
 345 {
 346    pipe_texture_reference(&trans->texture, NULL);
 347    FREE(trans);
 348 }
 349
 350 static void* r300_transfer_map(struct pipe_screen* screen,
 351                               struct pipe_transfer* transfer)
 352 {
 353     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 354     char* map;
 355     enum pipe_format format = tex->tex.format;
 356
 357     map = pipe_buffer_map(screen, tex->buffer,
 358                           pipe_transfer_buffer_flags(transfer));
 359
 360     if (!map) {
 361         return NULL;
 362     }
 363
 364     return map + r300_transfer(transfer)->offset +
 365         transfer->y / util_format_get_blockheight(format) * transfer->stride +
 366         transfer->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
 367 }
 368
 369 static void r300_transfer_unmap(struct pipe_screen* screen,
 370                                 struct pipe_transfer* transfer)
 371 {
 372     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 373     pipe_buffer_unmap(screen, tex->buffer);
 374 }
 375
 376 static void r300_destroy_screen(struct pipe_screen* pscreen)
 377 {
 378     struct r300_screen* r300screen = r300_screen(pscreen);
 379
 380     FREE(r300screen->caps);
 381     FREE(r300screen);
 382 }
 383
 384 struct pipe_screen* r300_create_screen(struct radeon_winsys* radeon_winsys)
 385 {
 386     struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
 387     struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
 388
 389     if (!r300screen || !caps)
 390         return NULL;
 391
 392     caps->pci_id = radeon_winsys->pci_id;
 393     caps->num_frag_pipes = radeon_winsys->gb_pipes;
 394     caps->num_z_pipes = radeon_winsys->z_pipes;
 395
 396     r300_parse_chipset(caps);
 397
 398     r300screen->caps = caps;
 399     r300screen->screen.winsys = (struct pipe_winsys*)radeon_winsys;
 400     r300screen->screen.destroy = r300_destroy_screen;
 401     r300screen->screen.get_name = r300_get_name;
 402     r300screen->screen.get_vendor = r300_get_vendor;
 403     r300screen->screen.get_param = r300_get_param;
 404     r300screen->screen.get_paramf = r300_get_paramf;
 405     r300screen->screen.is_format_supported = r300_is_format_supported;
 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 }