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             return 0;
  91         case PIPE_CAP_GLSL:
  92             /* IN THEORY */
  93             return 0;
  94         case PIPE_CAP_S3TC:
  95             /* IN THEORY */
  96             return 0;
  97         case PIPE_CAP_ANISOTROPIC_FILTER:
  98             /* IN THEORY */
  99             return 0;
 100         case PIPE_CAP_POINT_SPRITE:
 101             /* IN THEORY */
 102             return 0;
 103         case PIPE_CAP_MAX_RENDER_TARGETS:
 104             return 4;
 105         case PIPE_CAP_OCCLUSION_QUERY:
 106             return 1;
 107         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 108             /* IN THEORY */
 109             return 0;
 110         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 111             if (r300screen->caps->is_r500) {
 112                 /* 13 == 4096x4096 */
 113                 return 13;
 114             } else {
 115                 /* 12 == 2048x2048 */
 116                 return 12;
 117             }
 118         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 119             /* So, technically, the limit is the same as above, but some math
 120              * shows why this is silly. Assuming RGBA, 4cpp, we can see that
 121              * 4096*4096*4096 = 64.0 GiB exactly, so it's not exactly
 122              * practical. However, if at some point a game really wants this,
 123              * then we can remove or raise this limit. */
 124             if (r300screen->caps->is_r500) {
 125                 /* 9 == 256x256x256 */
 126                 return 9;
 127             } else {
 128                 /* 8 == 128*128*128 */
 129                 return 8;
 130             }
 131         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 132             if (r300screen->caps->is_r500) {
 133                 /* 13 == 4096x4096 */
 134                 return 13;
 135             } else {
 136                 /* 12 == 2048x2048 */
 137                 return 12;
 138             }
 139         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 140             return 1;
 141         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 142             return 1;
 143         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 144             /* XXX guessing (what a terrible guess) */
 145             return 2;
 146         default:
 147             debug_printf("r300: Implementation error: Bad param %d\n",
 148                 param);
 149             return 0;
 150     }
 151 }
 152
 153 static float r300_get_paramf(struct pipe_screen* pscreen, int param)
 154 {
 155     switch (param) {
 156         case PIPE_CAP_MAX_LINE_WIDTH:
 157         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 158             /* XXX this is the biggest thing that will fit in that register.
 159             * Perhaps the actual rendering limits are less? */
 160             return 10922.0f;
 161         case PIPE_CAP_MAX_POINT_WIDTH:
 162         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 163             /* XXX this is the biggest thing that will fit in that register.
 164              * Perhaps the actual rendering limits are less? */
 165             return 10922.0f;
 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_2d_format(enum pipe_format format, boolean is_r500)
 178 {
 179     switch (format) {
 180         /* Colorbuffer */
 181         case PIPE_FORMAT_A4R4G4B4_UNORM:
 182         case PIPE_FORMAT_R5G6B5_UNORM:
 183         case PIPE_FORMAT_A1R5G5B5_UNORM:
 184         case PIPE_FORMAT_A8R8G8B8_UNORM:
 185         /* Colorbuffer or texture */
 186         case PIPE_FORMAT_I8_UNORM:
 187         /* Z buffer */
 188         case PIPE_FORMAT_Z16_UNORM:
 189         /* Z buffer with stencil */
 190         case PIPE_FORMAT_Z24S8_UNORM:
 191             return TRUE;
 192
 193         /* XXX These don't even exist
 194         case PIPE_FORMAT_A32R32G32B32:
 195         case PIPE_FORMAT_A16R16G16B16: */
 196         /* XXX Insert YUV422 packed VYUY and YVYU here */
 197         /* XXX What the deuce is UV88? (r3xx accel page 14)
 198             debug_printf("r300: Warning: Got unimplemented format: %s in %s\n",
 199                 pf_name(format), __FUNCTION__);
 200             return FALSE; */
 201
 202         /* XXX Supported yet unimplemented r5xx formats: */
 203         /* XXX Again, what is UV1010 this time? (r5xx accel page 148) */
 204         /* XXX Even more that don't exist
 205         case PIPE_FORMAT_A10R10G10B10_UNORM:
 206         case PIPE_FORMAT_A2R10G10B10_UNORM:
 207         case PIPE_FORMAT_I10_UNORM:
 208             debug_printf(
 209                 "r300: Warning: Got unimplemented r500 format: %s in %s\n",
 210                 pf_name(format), __FUNCTION__);
 211             return FALSE; */
 212
 213         default:
 214             debug_printf("r300: Warning: Got unsupported format: %s in %s\n",
 215                 pf_name(format), __FUNCTION__);
 216             break;
 217     }
 218
 219     return FALSE;
 220 }
 221
 222 /* XXX moar targets */
 223 static boolean r300_is_format_supported(struct pipe_screen* pscreen,
 224                                         enum pipe_format format,
 225                                         enum pipe_texture_target target,
 226                                         unsigned tex_usage,
 227                                         unsigned geom_flags)
 228 {
 229     switch (target) {
 230         case PIPE_TEXTURE_2D:
 231             return check_tex_2d_format(format,
 232                 r300_screen(pscreen)->caps->is_r500);
 233         default:
 234             debug_printf("r300: Warning: Got unknown format target: %d\n",
 235                 format);
 236             break;
 237     }
 238
 239     return FALSE;
 240 }
 241
 242 static struct pipe_transfer*
 243 r300_get_tex_transfer(struct pipe_screen *screen,
 244                       struct pipe_texture *texture,
 245                       unsigned face, unsigned level, unsigned zslice,
 246                       enum pipe_transfer_usage usage, unsigned x, unsigned y,
 247                       unsigned w, unsigned h)
 248 {
 249     struct r300_texture *tex = (struct r300_texture *)texture;
 250     struct r300_transfer *trans;
 251     unsigned offset;  /* in bytes */
 252
 253     /* XXX Add support for these things */
 254     if (texture->target == PIPE_TEXTURE_CUBE) {
 255         debug_printf("PIPE_TEXTURE_CUBE is not yet supported.\n");
 256         /* offset = tex->image_offset[level][face]; */
 257     }
 258     else if (texture->target == PIPE_TEXTURE_3D) {
 259         debug_printf("PIPE_TEXTURE_3D is not yet supported.\n");
 260         /* offset = tex->image_offset[level][zslice]; */
 261     }
 262     else {
 263         offset = tex->offset[level];
 264         assert(face == 0);
 265         assert(zslice == 0);
 266     }
 267
 268     trans = CALLOC_STRUCT(r300_transfer);
 269     if (trans) {
 270         pipe_texture_reference(&trans->transfer.texture, texture);
 271         trans->transfer.format = trans->transfer.format;
 272         trans->transfer.width = w;
 273         trans->transfer.height = h;
 274         trans->transfer.block = texture->block;
 275         trans->transfer.nblocksx = texture->nblocksx[level];
 276         trans->transfer.nblocksy = texture->nblocksy[level];
 277         trans->transfer.stride = tex->stride;
 278         trans->transfer.usage = usage;
 279         trans->offset = offset;
 280     }
 281     return &trans->transfer;
 282 }
 283
 284 static void
 285 r300_tex_transfer_destroy(struct pipe_transfer *trans)
 286 {
 287    pipe_texture_reference(&trans->texture, NULL);
 288    FREE(trans);
 289 }
 290
 291 static void* r300_transfer_map(struct pipe_screen* screen,
 292                               struct pipe_transfer* transfer)
 293 {
 294     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 295     char* map;
 296     unsigned flags = 0;
 297
 298     if (transfer->usage != PIPE_TRANSFER_WRITE) {
 299         flags |= PIPE_BUFFER_USAGE_CPU_READ;
 300     }
 301     if (transfer->usage != PIPE_TRANSFER_READ) {
 302         flags |= PIPE_BUFFER_USAGE_CPU_WRITE;
 303     }
 304
 305     map = pipe_buffer_map(screen, tex->buffer, flags);
 306
 307     if (!map) {
 308         return NULL;
 309     }
 310
 311     return map + r300_transfer(transfer)->offset +
 312         transfer->y / transfer->block.height * transfer->stride +
 313         transfer->x / transfer->block.width * transfer->block.size;
 314 }
 315
 316 static void r300_transfer_unmap(struct pipe_screen* screen,
 317                                 struct pipe_transfer* transfer)
 318 {
 319     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 320     pipe_buffer_unmap(screen, tex->buffer);
 321 }
 322
 323 static void r300_destroy_screen(struct pipe_screen* pscreen)
 324 {
 325     struct r300_screen* r300screen = r300_screen(pscreen);
 326
 327     FREE(r300screen->caps);
 328     FREE(r300screen);
 329 }
 330
 331 struct pipe_screen* r300_create_screen(struct r300_winsys* r300_winsys)
 332 {
 333     struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
 334     struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
 335
 336     if (!r300screen || !caps)
 337         return NULL;
 338
 339     caps->pci_id = r300_winsys->pci_id;
 340     caps->num_frag_pipes = r300_winsys->gb_pipes;
 341
 342     r300_parse_chipset(caps);
 343
 344     r300screen->caps = caps;
 345     r300screen->screen.winsys = (struct pipe_winsys*)r300_winsys;
 346     r300screen->screen.destroy = r300_destroy_screen;
 347     r300screen->screen.get_name = r300_get_name;
 348     r300screen->screen.get_vendor = r300_get_vendor;
 349     r300screen->screen.get_param = r300_get_param;
 350     r300screen->screen.get_paramf = r300_get_paramf;
 351     r300screen->screen.is_format_supported = r300_is_format_supported;
 352     r300screen->screen.get_tex_transfer = r300_get_tex_transfer;
 353     r300screen->screen.tex_transfer_destroy = r300_tex_transfer_destroy;
 354     r300screen->screen.transfer_map = r300_transfer_map;
 355     r300screen->screen.transfer_unmap = r300_transfer_unmap;
 356
 357     r300_init_screen_texture_functions(&r300screen->screen);
 358     u_simple_screen_init(&r300screen->screen);
 359
 360     return &r300screen->screen;
 361 }