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 "r300_screen.h"
  24
  25 /* Return the identifier behind whom the brave coders responsible for this
  26  * amalgamation of code, sweat, and duct tape, routinely obscure their names.
  27  *
  28  * ...I should have just put "Corbin Simpson", but I'm not that cool.
  29  *
  30  * (Or egotistical. Yet.) */
  31 static const char* r300_get_vendor(struct pipe_screen* pscreen)
  32 {
  33     return "X.Org R300 Project";
  34 }
  35
  36 static const char* chip_families[] = {
  37     "R300",
  38     "R350",
  39     "R360",
  40     "RV350",
  41     "RV370",
  42     "RV380",
  43     "R420",
  44     "R423",
  45     "R430",
  46     "R480",
  47     "R481",
  48     "RV410",
  49     "RS400",
  50     "RC410",
  51     "RS480",
  52     "RS482",
  53     "RS600",
  54     "RS690",
  55     "RS740",
  56     "RV515",
  57     "R520",
  58     "RV530",
  59     "R580",
  60     "RV560",
  61     "RV570"
  62 };
  63
  64 static const char* r300_get_name(struct pipe_screen* pscreen)
  65 {
  66     struct r300_screen* r300screen = r300_screen(pscreen);
  67
  68     return chip_families[r300screen->caps->family];
  69 }
  70
  71 static int r300_get_param(struct pipe_screen* pscreen, int param)
  72 {
  73     struct r300_screen* r300screen = r300_screen(pscreen);
  74
  75     switch (param) {
  76         /* XXX cases marked "IN THEORY" are possible on the hardware,
  77          * but haven't been implemented yet. */
  78         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  79             /* XXX I'm told this goes up to 16 */
  80             return 8;
  81         case PIPE_CAP_NPOT_TEXTURES:
  82             /* IN THEORY */
  83             return 0;
  84         case PIPE_CAP_TWO_SIDED_STENCIL:
  85             if (r300screen->caps->is_r500) {
  86                 return 1;
  87             } else {
  88                 return 0;
  89             }
  90         case PIPE_CAP_GLSL:
  91             if (r300screen->caps->is_r500) {
  92                 return 1;
  93             } else {
  94                 return 0;
  95             }
  96         case PIPE_CAP_S3TC:
  97             /* IN THEORY */
  98             return 0;
  99         case PIPE_CAP_ANISOTROPIC_FILTER:
 100             return 1;
 101         case PIPE_CAP_POINT_SPRITE:
 102             /* IN THEORY */
 103             return 0;
 104         case PIPE_CAP_MAX_RENDER_TARGETS:
 105             return 4;
 106         case PIPE_CAP_OCCLUSION_QUERY:
 107             /* IN THEORY */
 108             return 0;
 109         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 110             /* IN THEORY */
 111             return 0;
 112         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 113             if (r300screen->caps->is_r500) {
 114                 /* 13 == 4096x4096 */
 115                 return 13;
 116             } else {
 117                 /* 12 == 2048x2048 */
 118                 return 12;
 119             }
 120         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 121             /* So, technically, the limit is the same as above, but some math
 122              * shows why this is silly. Assuming RGBA, 4cpp, we can see that
 123              * 4096*4096*4096 = 64.0 GiB exactly, so it's not exactly
 124              * practical. However, if at some point a game really wants this,
 125              * then we can remove or raise this limit. */
 126             if (r300screen->caps->is_r500) {
 127                 /* 9 == 256x256x256 */
 128                 return 9;
 129             } else {
 130                 /* 8 == 128*128*128 */
 131                 return 8;
 132             }
 133         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 134             if (r300screen->caps->is_r500) {
 135                 /* 13 == 4096x4096 */
 136                 return 13;
 137             } else {
 138                 /* 12 == 2048x2048 */
 139                 return 12;
 140             }
 141         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 142             return 1;
 143         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 144             return 1;
 145         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 146             /* XXX guessing (what a terrible guess) */
 147             return 2;
 148         default:
 149             debug_printf("r300: Implementation error: Bad param %d\n",
 150                 param);
 151             return 0;
 152     }
 153 }
 154
 155 static float r300_get_paramf(struct pipe_screen* pscreen, int param)
 156 {
 157     struct r300_screen* r300screen = r300_screen(pscreen);
 158
 159     switch (param) {
 160         case PIPE_CAP_MAX_LINE_WIDTH:
 161         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 162         case PIPE_CAP_MAX_POINT_WIDTH:
 163         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 164             /* The maximum dimensions of the colorbuffer are our practical
 165              * rendering limits. 2048 pixels should be enough for anybody. */
 166             if (r300screen->caps->is_r500) {
 167                 return 4096.0f;
 168             } else {
 169                 return 2048.0f;
 170             }
 171         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 172             return 16.0f;
 173         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 174             return 16.0f;
 175         default:
 176             debug_printf("r300: Implementation error: Bad paramf %d\n",
 177                 param);
 178             return 0.0f;
 179     }
 180 }
 181
 182 static boolean check_tex_2d_format(enum pipe_format format, boolean is_r500)
 183 {
 184     switch (format) {
 185         /* Colorbuffer */
 186         case PIPE_FORMAT_A4R4G4B4_UNORM:
 187         case PIPE_FORMAT_R5G6B5_UNORM:
 188         case PIPE_FORMAT_A1R5G5B5_UNORM:
 189         case PIPE_FORMAT_A8R8G8B8_UNORM:
 190         /* Colorbuffer or texture */
 191         case PIPE_FORMAT_I8_UNORM:
 192         /* Z buffer */
 193         case PIPE_FORMAT_Z16_UNORM:
 194         /* Z buffer with stencil */
 195         case PIPE_FORMAT_Z24S8_UNORM:
 196             return TRUE;
 197
 198         /* XXX These don't even exist
 199         case PIPE_FORMAT_A32R32G32B32:
 200         case PIPE_FORMAT_A16R16G16B16: */
 201         /* XXX Insert YUV422 packed VYUY and YVYU here */
 202         /* XXX What the deuce is UV88? (r3xx accel page 14)
 203             debug_printf("r300: Warning: Got unimplemented format: %s in %s\n",
 204                 pf_name(format), __FUNCTION__);
 205             return FALSE; */
 206
 207         /* XXX Supported yet unimplemented r5xx formats: */
 208         /* XXX Again, what is UV1010 this time? (r5xx accel page 148) */
 209         /* XXX Even more that don't exist
 210         case PIPE_FORMAT_A10R10G10B10_UNORM:
 211         case PIPE_FORMAT_A2R10G10B10_UNORM:
 212         case PIPE_FORMAT_I10_UNORM:
 213             debug_printf(
 214                 "r300: Warning: Got unimplemented r500 format: %s in %s\n",
 215                 pf_name(format), __FUNCTION__);
 216             return FALSE; */
 217
 218         default:
 219             debug_printf("r300: Warning: Got unsupported format: %s in %s\n",
 220                 pf_name(format), __FUNCTION__);
 221             break;
 222     }
 223
 224     return FALSE;
 225 }
 226
 227 /* XXX moar targets */
 228 static boolean r300_is_format_supported(struct pipe_screen* pscreen,
 229                                         enum pipe_format format,
 230                                         enum pipe_texture_target target,
 231                                         unsigned tex_usage,
 232                                         unsigned geom_flags)
 233 {
 234     switch (target) {
 235         case PIPE_TEXTURE_2D:
 236             return check_tex_2d_format(format,
 237                 r300_screen(pscreen)->caps->is_r500);
 238         case PIPE_TEXTURE_1D:
 239         case PIPE_TEXTURE_3D:
 240         case PIPE_TEXTURE_CUBE:
 241             debug_printf("r300: Implementation error: Unsupported format "
 242                     "target: %d\n", target);
 243             break;
 244         default:
 245             debug_printf("r300: Fatal: This is not a format target: %d\n",
 246                 target);
 247             assert(0);
 248             break;
 249     }
 250
 251     return FALSE;
 252 }
 253
 254 static struct pipe_transfer*
 255 r300_get_tex_transfer(struct pipe_screen *screen,
 256                       struct pipe_texture *texture,
 257                       unsigned face, unsigned level, unsigned zslice,
 258                       enum pipe_transfer_usage usage, unsigned x, unsigned y,
 259                       unsigned w, unsigned h)
 260 {
 261     struct r300_texture *tex = (struct r300_texture *)texture;
 262     struct r300_transfer *trans;
 263     unsigned offset;  /* in bytes */
 264
 265     /* XXX Add support for these things */
 266     if (texture->target == PIPE_TEXTURE_CUBE) {
 267         debug_printf("PIPE_TEXTURE_CUBE is not yet supported.\n");
 268         /* offset = tex->image_offset[level][face]; */
 269     }
 270     else if (texture->target == PIPE_TEXTURE_3D) {
 271         debug_printf("PIPE_TEXTURE_3D is not yet supported.\n");
 272         /* offset = tex->image_offset[level][zslice]; */
 273     }
 274     else {
 275         offset = tex->offset[level];
 276         assert(face == 0);
 277         assert(zslice == 0);
 278     }
 279
 280     trans = CALLOC_STRUCT(r300_transfer);
 281     if (trans) {
 282         pipe_texture_reference(&trans->transfer.texture, texture);
 283         trans->transfer.format = trans->transfer.format;
 284         trans->transfer.width = w;
 285         trans->transfer.height = h;
 286         trans->transfer.block = texture->block;
 287         trans->transfer.nblocksx = texture->nblocksx[level];
 288         trans->transfer.nblocksy = texture->nblocksy[level];
 289         trans->transfer.stride = tex->stride;
 290         trans->transfer.usage = usage;
 291         trans->offset = offset;
 292     }
 293     return &trans->transfer;
 294 }
 295
 296 static void
 297 r300_tex_transfer_destroy(struct pipe_transfer *trans)
 298 {
 299    pipe_texture_reference(&trans->texture, NULL);
 300    FREE(trans);
 301 }
 302
 303 static void* r300_transfer_map(struct pipe_screen* screen,
 304                               struct pipe_transfer* transfer)
 305 {
 306     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 307     char* map;
 308     unsigned flags = 0;
 309
 310     if (transfer->usage != PIPE_TRANSFER_WRITE) {
 311         flags |= PIPE_BUFFER_USAGE_CPU_READ;
 312     }
 313     if (transfer->usage != PIPE_TRANSFER_READ) {
 314         flags |= PIPE_BUFFER_USAGE_CPU_WRITE;
 315     }
 316
 317     map = pipe_buffer_map(screen, tex->buffer, flags);
 318
 319     if (!map) {
 320         return NULL;
 321     }
 322
 323     return map + r300_transfer(transfer)->offset +
 324         transfer->y / transfer->block.height * transfer->stride +
 325         transfer->x / transfer->block.width * transfer->block.size;
 326 }
 327
 328 static void r300_transfer_unmap(struct pipe_screen* screen,
 329                                 struct pipe_transfer* transfer)
 330 {
 331     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 332     pipe_buffer_unmap(screen, tex->buffer);
 333 }
 334
 335 static void r300_destroy_screen(struct pipe_screen* pscreen)
 336 {
 337     struct r300_screen* r300screen = r300_screen(pscreen);
 338
 339     FREE(r300screen->caps);
 340     FREE(r300screen);
 341 }
 342
 343 struct pipe_screen* r300_create_screen(struct r300_winsys* r300_winsys)
 344 {
 345     struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
 346     struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
 347
 348     if (!r300screen || !caps)
 349         return NULL;
 350
 351     caps->pci_id = r300_winsys->pci_id;
 352
 353     r300_parse_chipset(caps);
 354
 355     r300screen->caps = caps;
 356     r300screen->screen.winsys = (struct pipe_winsys*)r300_winsys;
 357     r300screen->screen.destroy = r300_destroy_screen;
 358     r300screen->screen.get_name = r300_get_name;
 359     r300screen->screen.get_vendor = r300_get_vendor;
 360     r300screen->screen.get_param = r300_get_param;
 361     r300screen->screen.get_paramf = r300_get_paramf;
 362     r300screen->screen.is_format_supported = r300_is_format_supported;
 363     r300screen->screen.get_tex_transfer = r300_get_tex_transfer;
 364     r300screen->screen.tex_transfer_destroy = r300_tex_transfer_destroy;
 365     r300screen->screen.transfer_map = r300_transfer_map;
 366     r300screen->screen.transfer_unmap = r300_transfer_unmap;
 367
 368     r300_init_screen_texture_functions(&r300screen->screen);
 369     u_simple_screen_init(&r300screen->screen);
 370
 371     return &r300screen->screen;
 372 }