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_memory.h"
  25 #include "util/u_simple_screen.h"
  26
  27 #include "r300_context.h"
  28 #include "r300_screen.h"
  29 #include "r300_texture.h"
  30 #include "r300_winsys.h"
  31
  32 /* Return the identifier behind whom the brave coders responsible for this
  33  * amalgamation of code, sweat, and duct tape, routinely obscure their names.
  34  *
  35  * ...I should have just put "Corbin Simpson", but I'm not that cool.
  36  *
  37  * (Or egotistical. Yet.) */
  38 static const char* r300_get_vendor(struct pipe_screen* pscreen)
  39 {
  40     return "X.Org R300 Project";
  41 }
  42
  43 static const char* chip_families[] = {
  44     "R300",
  45     "R350",
  46     "R360",
  47     "RV350",
  48     "RV370",
  49     "RV380",
  50     "R420",
  51     "R423",
  52     "R430",
  53     "R480",
  54     "R481",
  55     "RV410",
  56     "RS400",
  57     "RC410",
  58     "RS480",
  59     "RS482",
  60     "RS600",
  61     "RS690",
  62     "RS740",
  63     "RV515",
  64     "R520",
  65     "RV530",
  66     "R580",
  67     "RV560",
  68     "RV570"
  69 };
  70
  71 static const char* r300_get_name(struct pipe_screen* pscreen)
  72 {
  73     struct r300_screen* r300screen = r300_screen(pscreen);
  74
  75     return chip_families[r300screen->caps->family];
  76 }
  77
  78 static int r300_get_param(struct pipe_screen* pscreen, int param)
  79 {
  80     struct r300_screen* r300screen = r300_screen(pscreen);
  81
  82     switch (param) {
  83         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  84             /* XXX I'm told this goes up to 16 */
  85             return 8;
  86         case PIPE_CAP_NPOT_TEXTURES:
  87             /* XXX enable now to get GL2.1 API,
  88              * figure out later how to emulate this */
  89             return 1;
  90         case PIPE_CAP_TWO_SIDED_STENCIL:
  91             if (r300screen->caps->is_r500) {
  92                 return 1;
  93             } else {
  94                 return 0;
  95             }
  96         case PIPE_CAP_GLSL:
  97             /* I'll be frank. This is a lie.
  98              *
  99              * We don't truly support GLSL on any of this driver's chipsets.
 100              * To be fair, no chipset supports the full GLSL specification
 101              * to the best of our knowledge, but some of the less esoteric
 102              * features are still missing here.
 103              *
 104              * Rather than cripple ourselves intentionally, I'm going to set
 105              * this flag, and as Gallium's interface continues to change, I
 106              * hope that this single monolithic GLSL enable can slowly get
 107              * split down into many different pieces and the state tracker
 108              * will handle fallbacks transparently, like it should.
 109              *
 110              * ~ C.
 111              */
 112             return 1;
 113         case PIPE_CAP_ANISOTROPIC_FILTER:
 114             return 1;
 115         case PIPE_CAP_POINT_SPRITE:
 116             return 1;
 117         case PIPE_CAP_MAX_RENDER_TARGETS:
 118             return 4;
 119         case PIPE_CAP_OCCLUSION_QUERY:
 120             return 1;
 121         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 122             return 1;
 123         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 124         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 125         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 126             if (r300screen->caps->is_r500) {
 127                 /* 13 == 4096 */
 128                 return 13;
 129             } else {
 130                 /* 12 == 2048 */
 131                 return 12;
 132             }
 133         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 134             return 1;
 135         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 136             return 1;
 137         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 138             return 0;
 139         case PIPE_CAP_TGSI_CONT_SUPPORTED:
 140             return 0;
 141         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 142             return 1;
 143         default:
 144             debug_printf("r300: Implementation error: Bad param %d\n",
 145                 param);
 146             return 0;
 147     }
 148 }
 149
 150 static float r300_get_paramf(struct pipe_screen* pscreen, int param)
 151 {
 152     struct r300_screen* r300screen = r300_screen(pscreen);
 153
 154     switch (param) {
 155         case PIPE_CAP_MAX_LINE_WIDTH:
 156         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 157         case PIPE_CAP_MAX_POINT_WIDTH:
 158         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 159             /* The maximum dimensions of the colorbuffer are our practical
 160              * rendering limits. 2048 pixels should be enough for anybody. */
 161             if (r300screen->caps->is_r500) {
 162                 return 4096.0f;
 163             } else {
 164                 return 2048.0f;
 165             }
 166         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 167             return 16.0f;
 168         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 169             return 16.0f;
 170         default:
 171             debug_printf("r300: Implementation error: Bad paramf %d\n",
 172                 param);
 173             return 0.0f;
 174     }
 175 }
 176
 177 static boolean check_tex_format(enum pipe_format format, uint32_t usage,
 178                                 boolean is_r500)
 179 {
 180     uint32_t retval = 0;
 181
 182     switch (format) {
 183         /* Supported formats. */
 184         /* Colorbuffer */
 185         case PIPE_FORMAT_A4R4G4B4_UNORM:
 186         case PIPE_FORMAT_R5G6B5_UNORM:
 187         case PIPE_FORMAT_A1R5G5B5_UNORM:
 188             retval = usage &
 189                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 190                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 191                  PIPE_TEXTURE_USAGE_PRIMARY);
 192             break;
 193
 194         /* Texture */
 195         case PIPE_FORMAT_A8R8G8B8_SRGB:
 196         case PIPE_FORMAT_R8G8B8A8_SRGB:
 197         case PIPE_FORMAT_DXT1_RGB:
 198         case PIPE_FORMAT_DXT1_RGBA:
 199         case PIPE_FORMAT_DXT3_RGBA:
 200         case PIPE_FORMAT_DXT5_RGBA:
 201         case PIPE_FORMAT_YCBCR:
 202         case PIPE_FORMAT_L8_UNORM:
 203         case PIPE_FORMAT_A8L8_UNORM:
 204             retval = usage & PIPE_TEXTURE_USAGE_SAMPLER;
 205             break;
 206
 207         /* Colorbuffer or texture */
 208         case PIPE_FORMAT_A8R8G8B8_UNORM:
 209         case PIPE_FORMAT_X8R8G8B8_UNORM:
 210         case PIPE_FORMAT_R8G8B8A8_UNORM:
 211         case PIPE_FORMAT_R8G8B8X8_UNORM:
 212         case PIPE_FORMAT_I8_UNORM:
 213             retval = usage &
 214                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 215                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 216                  PIPE_TEXTURE_USAGE_PRIMARY |
 217                  PIPE_TEXTURE_USAGE_SAMPLER);
 218             break;
 219
 220         /* Z buffer or texture */
 221         case PIPE_FORMAT_Z16_UNORM:
 222         case PIPE_FORMAT_Z24X8_UNORM:
 223         /* Z buffer with stencil or texture */
 224         case PIPE_FORMAT_Z24S8_UNORM:
 225             retval = usage &
 226                 (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
 227                  PIPE_TEXTURE_USAGE_SAMPLER);
 228             break;
 229
 230         /* Definitely unsupported formats. */
 231         /* Non-usable Z buffer/stencil formats. */
 232         case PIPE_FORMAT_Z32_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 What the deuce is UV88? (r3xx accel page 14)
 243             debug_printf("r300: Warning: Got unimplemented format: %s in %s\n",
 244                 pf_name(format), __FUNCTION__);
 245             return FALSE; */
 246
 247         /* XXX Supported yet unimplemented r5xx formats: */
 248         /* XXX Again, what is UV1010 this time? (r5xx accel page 148) */
 249         /* XXX Even more that don't exist
 250         case PIPE_FORMAT_A10R10G10B10_UNORM:
 251         case PIPE_FORMAT_A2R10G10B10_UNORM:
 252         case PIPE_FORMAT_I10_UNORM:
 253             debug_printf(
 254                 "r300: Warning: Got unimplemented r500 format: %s in %s\n",
 255                 pf_name(format), __FUNCTION__);
 256             return FALSE; */
 257
 258         default:
 259             /* Unknown format... */
 260             debug_printf("r300: Warning: Got unknown format: %s in %s\n",
 261                 pf_name(format), __FUNCTION__);
 262             break;
 263     }
 264
 265     /* If usage was a mask that contained multiple bits, and not all of them
 266      * are supported, this will catch that and return FALSE.
 267      * e.g. usage = 2 | 4; retval = 4; (retval >= usage) == FALSE
 268      *
 269      * This also returns FALSE for any unknown formats.
 270      */
 271     return (retval >= usage);
 272 }
 273
 274 static boolean r300_is_format_supported(struct pipe_screen* pscreen,
 275                                         enum pipe_format format,
 276                                         enum pipe_texture_target target,
 277                                         unsigned tex_usage,
 278                                         unsigned geom_flags)
 279 {
 280     switch (target) {
 281         case PIPE_TEXTURE_1D:   /* handle 1D textures as 2D ones */
 282         case PIPE_TEXTURE_2D:
 283         case PIPE_TEXTURE_3D:
 284         case PIPE_TEXTURE_CUBE:
 285             return check_tex_format(format, tex_usage,
 286                 r300_screen(pscreen)->caps->is_r500);
 287
 288         default:
 289             debug_printf("r300: Fatal: This is not a format target: %d\n",
 290                 target);
 291             assert(0);
 292             break;
 293     }
 294
 295     return FALSE;
 296 }
 297
 298 static struct pipe_transfer*
 299 r300_get_tex_transfer(struct pipe_screen *screen,
 300                       struct pipe_texture *texture,
 301                       unsigned face, unsigned level, unsigned zslice,
 302                       enum pipe_transfer_usage usage, unsigned x, unsigned y,
 303                       unsigned w, unsigned h)
 304 {
 305     struct r300_texture *tex = (struct r300_texture *)texture;
 306     struct r300_transfer *trans;
 307     unsigned offset;
 308
 309     offset = r300_texture_get_offset(tex, level, zslice, face);  /* in bytes */
 310
 311     trans = CALLOC_STRUCT(r300_transfer);
 312     if (trans) {
 313         pipe_texture_reference(&trans->transfer.texture, texture);
 314         trans->transfer.format = texture->format;
 315         trans->transfer.x = x;
 316         trans->transfer.y = y;
 317         trans->transfer.width = w;
 318         trans->transfer.height = h;
 319         trans->transfer.block = texture->block;
 320         trans->transfer.nblocksx = texture->nblocksx[level];
 321         trans->transfer.nblocksy = texture->nblocksy[level];
 322         trans->transfer.stride = r300_texture_get_stride(tex, level);
 323         trans->transfer.usage = usage;
 324
 325         /* XXX not sure whether it's required to set these two,
 326                the driver doesn't use them */
 327         trans->transfer.zslice = zslice;
 328         trans->transfer.face = face;
 329
 330         trans->offset = offset;
 331     }
 332     return &trans->transfer;
 333 }
 334
 335 static void
 336 r300_tex_transfer_destroy(struct pipe_transfer *trans)
 337 {
 338    pipe_texture_reference(&trans->texture, NULL);
 339    FREE(trans);
 340 }
 341
 342 static void* r300_transfer_map(struct pipe_screen* screen,
 343                               struct pipe_transfer* transfer)
 344 {
 345     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 346     char* map;
 347
 348     map = pipe_buffer_map(screen, tex->buffer,
 349                           pipe_transfer_buffer_flags(transfer));
 350
 351     if (!map) {
 352         return NULL;
 353     }
 354
 355     return map + r300_transfer(transfer)->offset +
 356         transfer->y / transfer->block.height * transfer->stride +
 357         transfer->x / transfer->block.width * transfer->block.size;
 358 }
 359
 360 static void r300_transfer_unmap(struct pipe_screen* screen,
 361                                 struct pipe_transfer* transfer)
 362 {
 363     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 364     pipe_buffer_unmap(screen, tex->buffer);
 365 }
 366
 367 static void r300_destroy_screen(struct pipe_screen* pscreen)
 368 {
 369     struct r300_screen* r300screen = r300_screen(pscreen);
 370
 371     FREE(r300screen->caps);
 372     FREE(r300screen);
 373 }
 374
 375 struct pipe_screen* r300_create_screen(struct r300_winsys* r300_winsys)
 376 {
 377     struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
 378     struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
 379
 380     if (!r300screen || !caps)
 381         return NULL;
 382
 383     caps->pci_id = r300_winsys->pci_id;
 384     caps->num_frag_pipes = r300_winsys->gb_pipes;
 385     caps->num_z_pipes = r300_winsys->z_pipes;
 386
 387     r300_parse_chipset(caps);
 388
 389     r300screen->caps = caps;
 390     r300screen->screen.winsys = (struct pipe_winsys*)r300_winsys;
 391     r300screen->screen.destroy = r300_destroy_screen;
 392     r300screen->screen.get_name = r300_get_name;
 393     r300screen->screen.get_vendor = r300_get_vendor;
 394     r300screen->screen.get_param = r300_get_param;
 395     r300screen->screen.get_paramf = r300_get_paramf;
 396     r300screen->screen.is_format_supported = r300_is_format_supported;
 397     r300screen->screen.get_tex_transfer = r300_get_tex_transfer;
 398     r300screen->screen.tex_transfer_destroy = r300_tex_transfer_destroy;
 399     r300screen->screen.transfer_map = r300_transfer_map;
 400     r300screen->screen.transfer_unmap = r300_transfer_unmap;
 401
 402     r300_init_screen_texture_functions(&r300screen->screen);
 403     u_simple_screen_init(&r300screen->screen);
 404
 405     return &r300screen->screen;
 406 }