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             /* IN THEORY */
  92             return 0;
  93         case PIPE_CAP_S3TC:
  94             /* IN THEORY */
  95             return 0;
  96         case PIPE_CAP_ANISOTROPIC_FILTER:
  97             return 1;
  98         case PIPE_CAP_POINT_SPRITE:
  99             /* IN THEORY */
 100             return 0;
 101         case PIPE_CAP_MAX_RENDER_TARGETS:
 102             return 4;
 103         case PIPE_CAP_OCCLUSION_QUERY:
 104             /* IN THEORY */
 105             return 0;
 106         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 107             /* IN THEORY */
 108             return 0;
 109         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 110             if (r300screen->caps->is_r500) {
 111                 /* 13 == 4096x4096 */
 112                 return 13;
 113             } else {
 114                 /* 12 == 2048x2048 */
 115                 return 12;
 116             }
 117         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 118             /* So, technically, the limit is the same as above, but some math
 119              * shows why this is silly. Assuming RGBA, 4cpp, we can see that
 120              * 4096*4096*4096 = 64.0 GiB exactly, so it's not exactly
 121              * practical. However, if at some point a game really wants this,
 122              * then we can remove or raise this limit. */
 123             if (r300screen->caps->is_r500) {
 124                 /* 9 == 256x256x256 */
 125                 return 9;
 126             } else {
 127                 /* 8 == 128*128*128 */
 128                 return 8;
 129             }
 130         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 131             if (r300screen->caps->is_r500) {
 132                 /* 13 == 4096x4096 */
 133                 return 13;
 134             } else {
 135                 /* 12 == 2048x2048 */
 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             /* XXX guessing (what a terrible guess) */
 144             return 2;
 145         default:
 146             debug_printf("r300: Implementation error: Bad param %d\n",
 147                 param);
 148             return 0;
 149     }
 150 }
 151
 152 static float r300_get_paramf(struct pipe_screen* pscreen, int param)
 153 {
 154     struct r300_screen* r300screen = r300_screen(pscreen);
 155
 156     switch (param) {
 157         case PIPE_CAP_MAX_LINE_WIDTH:
 158         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 159         case PIPE_CAP_MAX_POINT_WIDTH:
 160         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 161             /* The maximum dimensions of the colorbuffer are our practical
 162              * rendering limits. 2048 pixels should be enough for anybody. */
 163             if (r300screen->caps->is_r500) {
 164                 return 4096.0f;
 165             } else {
 166                 return 2048.0f;
 167             }
 168         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 169             return 16.0f;
 170         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 171             return 16.0f;
 172         default:
 173             debug_printf("r300: Implementation error: Bad paramf %d\n",
 174                 param);
 175             return 0.0f;
 176     }
 177 }
 178
 179 static boolean check_tex_2d_format(enum pipe_format format, boolean is_r500)
 180 {
 181     switch (format) {
 182         /* Colorbuffer */
 183         case PIPE_FORMAT_A4R4G4B4_UNORM:
 184         case PIPE_FORMAT_R5G6B5_UNORM:
 185         case PIPE_FORMAT_A1R5G5B5_UNORM:
 186         case PIPE_FORMAT_A8R8G8B8_UNORM:
 187         /* Colorbuffer or texture */
 188         case PIPE_FORMAT_I8_UNORM:
 189         /* Z buffer */
 190         case PIPE_FORMAT_Z16_UNORM:
 191         /* Z buffer with stencil */
 192         case PIPE_FORMAT_Z24S8_UNORM:
 193             return TRUE;
 194
 195         /* XXX These don't even exist
 196         case PIPE_FORMAT_A32R32G32B32:
 197         case PIPE_FORMAT_A16R16G16B16: */
 198         /* XXX Insert YUV422 packed VYUY and YVYU here */
 199         /* XXX What the deuce is UV88? (r3xx accel page 14)
 200             debug_printf("r300: Warning: Got unimplemented format: %s in %s\n",
 201                 pf_name(format), __FUNCTION__);
 202             return FALSE; */
 203
 204         /* XXX Supported yet unimplemented r5xx formats: */
 205         /* XXX Again, what is UV1010 this time? (r5xx accel page 148) */
 206         /* XXX Even more that don't exist
 207         case PIPE_FORMAT_A10R10G10B10_UNORM:
 208         case PIPE_FORMAT_A2R10G10B10_UNORM:
 209         case PIPE_FORMAT_I10_UNORM:
 210             debug_printf(
 211                 "r300: Warning: Got unimplemented r500 format: %s in %s\n",
 212                 pf_name(format), __FUNCTION__);
 213             return FALSE; */
 214
 215         default:
 216             debug_printf("r300: Warning: Got unsupported format: %s in %s\n",
 217                 pf_name(format), __FUNCTION__);
 218             break;
 219     }
 220
 221     return FALSE;
 222 }
 223
 224 /* XXX moar targets */
 225 static boolean r300_is_format_supported(struct pipe_screen* pscreen,
 226                                         enum pipe_format format,
 227                                         enum pipe_texture_target target,
 228                                         unsigned tex_usage,
 229                                         unsigned geom_flags)
 230 {
 231     switch (target) {
 232         case PIPE_TEXTURE_2D:
 233             return check_tex_2d_format(format,
 234                 r300_screen(pscreen)->caps->is_r500);
 235         case PIPE_TEXTURE_1D:
 236         case PIPE_TEXTURE_3D:
 237         case PIPE_TEXTURE_CUBE:
 238             debug_printf("r300: Implementation error: Unsupported format "
 239                     "target: %d\n", target);
 240             break;
 241         default:
 242             debug_printf("r300: Fatal: This is not a format target: %d\n",
 243                 target);
 244             assert(0);
 245             break;
 246     }
 247
 248     return FALSE;
 249 }
 250
 251 static struct pipe_transfer*
 252 r300_get_tex_transfer(struct pipe_screen *screen,
 253                       struct pipe_texture *texture,
 254                       unsigned face, unsigned level, unsigned zslice,
 255                       enum pipe_transfer_usage usage, unsigned x, unsigned y,
 256                       unsigned w, unsigned h)
 257 {
 258     struct r300_texture *tex = (struct r300_texture *)texture;
 259     struct r300_transfer *trans;
 260     unsigned offset;  /* in bytes */
 261
 262     /* XXX Add support for these things */
 263     if (texture->target == PIPE_TEXTURE_CUBE) {
 264         debug_printf("PIPE_TEXTURE_CUBE is not yet supported.\n");
 265         /* offset = tex->image_offset[level][face]; */
 266     }
 267     else if (texture->target == PIPE_TEXTURE_3D) {
 268         debug_printf("PIPE_TEXTURE_3D is not yet supported.\n");
 269         /* offset = tex->image_offset[level][zslice]; */
 270     }
 271     else {
 272         offset = tex->offset[level];
 273         assert(face == 0);
 274         assert(zslice == 0);
 275     }
 276
 277     trans = CALLOC_STRUCT(r300_transfer);
 278     if (trans) {
 279         pipe_texture_reference(&trans->transfer.texture, texture);
 280         trans->transfer.format = trans->transfer.format;
 281         trans->transfer.width = w;
 282         trans->transfer.height = h;
 283         trans->transfer.block = texture->block;
 284         trans->transfer.nblocksx = texture->nblocksx[level];
 285         trans->transfer.nblocksy = texture->nblocksy[level];
 286         trans->transfer.stride = tex->stride;
 287         trans->transfer.usage = usage;
 288         trans->offset = offset;
 289     }
 290     return &trans->transfer;
 291 }
 292
 293 static void
 294 r300_tex_transfer_destroy(struct pipe_transfer *trans)
 295 {
 296    pipe_texture_reference(&trans->texture, NULL);
 297    FREE(trans);
 298 }
 299
 300 static void* r300_transfer_map(struct pipe_screen* screen,
 301                               struct pipe_transfer* transfer)
 302 {
 303     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 304     char* map;
 305     unsigned flags = 0;
 306
 307     if (transfer->usage != PIPE_TRANSFER_WRITE) {
 308         flags |= PIPE_BUFFER_USAGE_CPU_READ;
 309     }
 310     if (transfer->usage != PIPE_TRANSFER_READ) {
 311         flags |= PIPE_BUFFER_USAGE_CPU_WRITE;
 312     }
 313
 314     map = pipe_buffer_map(screen, tex->buffer, flags);
 315
 316     if (!map) {
 317         return NULL;
 318     }
 319
 320     return map + r300_transfer(transfer)->offset +
 321         transfer->y / transfer->block.height * transfer->stride +
 322         transfer->x / transfer->block.width * transfer->block.size;
 323 }
 324
 325 static void r300_transfer_unmap(struct pipe_screen* screen,
 326                                 struct pipe_transfer* transfer)
 327 {
 328     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 329     pipe_buffer_unmap(screen, tex->buffer);
 330 }
 331
 332 static void r300_destroy_screen(struct pipe_screen* pscreen)
 333 {
 334     struct r300_screen* r300screen = r300_screen(pscreen);
 335
 336     FREE(r300screen->caps);
 337     FREE(r300screen);
 338 }
 339
 340 struct pipe_screen* r300_create_screen(struct r300_winsys* r300_winsys)
 341 {
 342     struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
 343     struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
 344
 345     if (!r300screen || !caps)
 346         return NULL;
 347
 348     caps->pci_id = r300_winsys->pci_id;
 349     caps->num_frag_pipes = r300_winsys->gb_pipes;
 350
 351     r300_parse_chipset(caps);
 352
 353     r300screen->caps = caps;
 354     r300screen->screen.winsys = (struct pipe_winsys*)r300_winsys;
 355     r300screen->screen.destroy = r300_destroy_screen;
 356     r300screen->screen.get_name = r300_get_name;
 357     r300screen->screen.get_vendor = r300_get_vendor;
 358     r300screen->screen.get_param = r300_get_param;
 359     r300screen->screen.get_paramf = r300_get_paramf;
 360     r300screen->screen.is_format_supported = r300_is_format_supported;
 361     r300screen->screen.get_tex_transfer = r300_get_tex_transfer;
 362     r300screen->screen.tex_transfer_destroy = r300_tex_transfer_destroy;
 363     r300screen->screen.transfer_map = r300_transfer_map;
 364     r300screen->screen.transfer_unmap = r300_transfer_unmap;
 365
 366     r300_init_screen_texture_functions(&r300screen->screen);
 367     u_simple_screen_init(&r300screen->screen);
 368
 369     return &r300screen->screen;
 370 }