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
  31 #include "radeon_winsys.h"
  32
  33 /* Return the identifier behind whom the brave coders responsible for this
  34  * amalgamation of code, sweat, and duct tape, routinely obscure their names.
  35  *
  36  * ...I should have just put "Corbin Simpson", but I'm not that cool.
  37  *
  38  * (Or egotistical. Yet.) */
  39 static const char* r300_get_vendor(struct pipe_screen* pscreen)
  40 {
  41     return "X.Org R300 Project";
  42 }
  43
  44 static const char* chip_families[] = {
  45     "R300",
  46     "R350",
  47     "R360",
  48     "RV350",
  49     "RV370",
  50     "RV380",
  51     "R420",
  52     "R423",
  53     "R430",
  54     "R480",
  55     "R481",
  56     "RV410",
  57     "RS400",
  58     "RC410",
  59     "RS480",
  60     "RS482",
  61     "RS600",
  62     "RS690",
  63     "RS740",
  64     "RV515",
  65     "R520",
  66     "RV530",
  67     "R580",
  68     "RV560",
  69     "RV570"
  70 };
  71
  72 static const char* r300_get_name(struct pipe_screen* pscreen)
  73 {
  74     struct r300_screen* r300screen = r300_screen(pscreen);
  75
  76     return chip_families[r300screen->caps->family];
  77 }
  78
  79 static int r300_get_param(struct pipe_screen* pscreen, int param)
  80 {
  81     struct r300_screen* r300screen = r300_screen(pscreen);
  82
  83     switch (param) {
  84         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  85             /* XXX I'm told this goes up to 16 */
  86             return 8;
  87         case PIPE_CAP_NPOT_TEXTURES:
  88             /* XXX enable now to get GL2.1 API,
  89              * figure out later how to emulate this */
  90             return 1;
  91         case PIPE_CAP_TWO_SIDED_STENCIL:
  92             if (r300screen->caps->is_r500) {
  93                 return 1;
  94             } else {
  95                 return 0;
  96             }
  97         case PIPE_CAP_GLSL:
  98             /* I'll be frank. This is a lie.
  99              *
 100              * We don't truly support GLSL on any of this driver's chipsets.
 101              * To be fair, no chipset supports the full GLSL specification
 102              * to the best of our knowledge, but some of the less esoteric
 103              * features are still missing here.
 104              *
 105              * Rather than cripple ourselves intentionally, I'm going to set
 106              * this flag, and as Gallium's interface continues to change, I
 107              * hope that this single monolithic GLSL enable can slowly get
 108              * split down into many different pieces and the state tracker
 109              * will handle fallbacks transparently, like it should.
 110              *
 111              * ~ C.
 112              */
 113             return 1;
 114         case PIPE_CAP_ANISOTROPIC_FILTER:
 115             return 1;
 116         case PIPE_CAP_POINT_SPRITE:
 117             return 1;
 118         case PIPE_CAP_MAX_RENDER_TARGETS:
 119             return 4;
 120         case PIPE_CAP_OCCLUSION_QUERY:
 121             return 1;
 122         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 123             return 1;
 124         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 125         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 126         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 127             if (r300screen->caps->is_r500) {
 128                 /* 13 == 4096 */
 129                 return 13;
 130             } else {
 131                 /* 12 == 2048 */
 132                 return 12;
 133             }
 134         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 135             return 1;
 136         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 137             return 1;
 138         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 139             return 0;
 140         case PIPE_CAP_TGSI_CONT_SUPPORTED:
 141             return 0;
 142         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 143             return 1;
 144         default:
 145             debug_printf("r300: Implementation error: Bad param %d\n",
 146                 param);
 147             return 0;
 148     }
 149 }
 150
 151 static float r300_get_paramf(struct pipe_screen* pscreen, int param)
 152 {
 153     struct r300_screen* r300screen = r300_screen(pscreen);
 154
 155     switch (param) {
 156         case PIPE_CAP_MAX_LINE_WIDTH:
 157         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 158         case PIPE_CAP_MAX_POINT_WIDTH:
 159         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 160             /* The maximum dimensions of the colorbuffer are our practical
 161              * rendering limits. 2048 pixels should be enough for anybody. */
 162             if (r300screen->caps->is_r500) {
 163                 return 4096.0f;
 164             } else {
 165                 return 2048.0f;
 166             }
 167         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 168             return 16.0f;
 169         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 170             return 16.0f;
 171         default:
 172             debug_printf("r300: Implementation error: Bad paramf %d\n",
 173                 param);
 174             return 0.0f;
 175     }
 176 }
 177
 178 static boolean check_tex_format(enum pipe_format format, uint32_t usage,
 179                                 boolean is_r500)
 180 {
 181     uint32_t retval = 0;
 182
 183     switch (format) {
 184         /* Supported formats. */
 185         /* Colorbuffer */
 186         case PIPE_FORMAT_A4R4G4B4_UNORM:
 187         case PIPE_FORMAT_R5G6B5_UNORM:
 188         case PIPE_FORMAT_A1R5G5B5_UNORM:
 189             retval = usage &
 190                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 191                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 192                  PIPE_TEXTURE_USAGE_PRIMARY);
 193             break;
 194
 195         /* Texture */
 196         case PIPE_FORMAT_A8R8G8B8_SRGB:
 197         case PIPE_FORMAT_R8G8B8A8_SRGB:
 198         case PIPE_FORMAT_DXT1_RGB:
 199         case PIPE_FORMAT_DXT1_RGBA:
 200         case PIPE_FORMAT_DXT3_RGBA:
 201         case PIPE_FORMAT_DXT5_RGBA:
 202         case PIPE_FORMAT_YCBCR:
 203         case PIPE_FORMAT_L8_UNORM:
 204         case PIPE_FORMAT_A8L8_UNORM:
 205             retval = usage & PIPE_TEXTURE_USAGE_SAMPLER;
 206             break;
 207
 208         /* Colorbuffer or texture */
 209         case PIPE_FORMAT_A8R8G8B8_UNORM:
 210         case PIPE_FORMAT_X8R8G8B8_UNORM:
 211         case PIPE_FORMAT_R8G8B8A8_UNORM:
 212         case PIPE_FORMAT_R8G8B8X8_UNORM:
 213         case PIPE_FORMAT_I8_UNORM:
 214             retval = usage &
 215                 (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 216                  PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 217                  PIPE_TEXTURE_USAGE_PRIMARY |
 218                  PIPE_TEXTURE_USAGE_SAMPLER);
 219             break;
 220
 221         /* Z buffer or texture */
 222         case PIPE_FORMAT_Z16_UNORM:
 223         case PIPE_FORMAT_Z24X8_UNORM:
 224         /* Z buffer with stencil or texture */
 225         case PIPE_FORMAT_Z24S8_UNORM:
 226             retval = usage &
 227                 (PIPE_TEXTURE_USAGE_DEPTH_STENCIL |
 228                  PIPE_TEXTURE_USAGE_SAMPLER);
 229             break;
 230
 231         /* Definitely unsupported formats. */
 232         /* Non-usable Z buffer/stencil formats. */
 233         case PIPE_FORMAT_Z32_UNORM:
 234         case PIPE_FORMAT_S8Z24_UNORM:
 235         case PIPE_FORMAT_X8Z24_UNORM:
 236             debug_printf("r300: Note: Got unsupported format: %s in %s\n",
 237                 pf_name(format), __FUNCTION__);
 238             return FALSE;
 239
 240         /* XXX These don't even exist
 241         case PIPE_FORMAT_A32R32G32B32:
 242         case PIPE_FORMAT_A16R16G16B16: */
 243         /* XXX What the deuce is UV88? (r3xx accel page 14)
 244             debug_printf("r300: Warning: Got unimplemented format: %s in %s\n",
 245                 pf_name(format), __FUNCTION__);
 246             return FALSE; */
 247
 248         /* XXX Supported yet unimplemented r5xx formats: */
 249         /* XXX Again, what is UV1010 this time? (r5xx accel page 148) */
 250         /* XXX Even more that don't exist
 251         case PIPE_FORMAT_A10R10G10B10_UNORM:
 252         case PIPE_FORMAT_A2R10G10B10_UNORM:
 253         case PIPE_FORMAT_I10_UNORM:
 254             debug_printf(
 255                 "r300: Warning: Got unimplemented r500 format: %s in %s\n",
 256                 pf_name(format), __FUNCTION__);
 257             return FALSE; */
 258
 259         default:
 260             /* Unknown format... */
 261             debug_printf("r300: Warning: Got unknown format: %s in %s\n",
 262                 pf_name(format), __FUNCTION__);
 263             break;
 264     }
 265
 266     /* If usage was a mask that contained multiple bits, and not all of them
 267      * are supported, this will catch that and return FALSE.
 268      * e.g. usage = 2 | 4; retval = 4; (retval >= usage) == FALSE
 269      *
 270      * This also returns FALSE for any unknown formats.
 271      */
 272     return (retval >= usage);
 273 }
 274
 275 static boolean r300_is_format_supported(struct pipe_screen* pscreen,
 276                                         enum pipe_format format,
 277                                         enum pipe_texture_target target,
 278                                         unsigned tex_usage,
 279                                         unsigned geom_flags)
 280 {
 281     switch (target) {
 282         case PIPE_TEXTURE_1D:   /* handle 1D textures as 2D ones */
 283         case PIPE_TEXTURE_2D:
 284         case PIPE_TEXTURE_3D:
 285         case PIPE_TEXTURE_CUBE:
 286             return check_tex_format(format, tex_usage,
 287                 r300_screen(pscreen)->caps->is_r500);
 288
 289         default:
 290             debug_printf("r300: Fatal: This is not a format target: %d\n",
 291                 target);
 292             assert(0);
 293             break;
 294     }
 295
 296     return FALSE;
 297 }
 298
 299 static struct pipe_transfer*
 300 r300_get_tex_transfer(struct pipe_screen *screen,
 301                       struct pipe_texture *texture,
 302                       unsigned face, unsigned level, unsigned zslice,
 303                       enum pipe_transfer_usage usage, unsigned x, unsigned y,
 304                       unsigned w, unsigned h)
 305 {
 306     struct r300_texture *tex = (struct r300_texture *)texture;
 307     struct r300_transfer *trans;
 308     unsigned offset;
 309
 310     offset = r300_texture_get_offset(tex, level, zslice, face);  /* in bytes */
 311
 312     trans = CALLOC_STRUCT(r300_transfer);
 313     if (trans) {
 314         pipe_texture_reference(&trans->transfer.texture, texture);
 315         trans->transfer.x = x;
 316         trans->transfer.y = y;
 317         trans->transfer.width = w;
 318         trans->transfer.height = h;
 319         trans->transfer.stride = r300_texture_get_stride(tex, level);
 320         trans->transfer.usage = usage;
 321
 322         /* XXX not sure whether it's required to set these two,
 323                the driver doesn't use them */
 324         trans->transfer.zslice = zslice;
 325         trans->transfer.face = face;
 326
 327         trans->offset = offset;
 328     }
 329     return &trans->transfer;
 330 }
 331
 332 static void
 333 r300_tex_transfer_destroy(struct pipe_transfer *trans)
 334 {
 335    pipe_texture_reference(&trans->texture, NULL);
 336    FREE(trans);
 337 }
 338
 339 static void* r300_transfer_map(struct pipe_screen* screen,
 340                               struct pipe_transfer* transfer)
 341 {
 342     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 343     char* map;
 344     enum pipe_format format = tex->tex.format;
 345
 346     map = pipe_buffer_map(screen, tex->buffer,
 347                           pipe_transfer_buffer_flags(transfer));
 348
 349     if (!map) {
 350         return NULL;
 351     }
 352
 353     return map + r300_transfer(transfer)->offset +
 354         transfer->y / pf_get_blockheight(format) * transfer->stride +
 355         transfer->x / pf_get_blockwidth(format) * pf_get_blocksize(format);
 356 }
 357
 358 static void r300_transfer_unmap(struct pipe_screen* screen,
 359                                 struct pipe_transfer* transfer)
 360 {
 361     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 362     pipe_buffer_unmap(screen, tex->buffer);
 363 }
 364
 365 static void r300_destroy_screen(struct pipe_screen* pscreen)
 366 {
 367     struct r300_screen* r300screen = r300_screen(pscreen);
 368
 369     FREE(r300screen->caps);
 370     FREE(r300screen);
 371 }
 372
 373 struct pipe_screen* r300_create_screen(struct radeon_winsys* radeon_winsys)
 374 {
 375     struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
 376     struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
 377
 378     if (!r300screen || !caps)
 379         return NULL;
 380
 381     caps->pci_id = radeon_winsys->pci_id;
 382     caps->num_frag_pipes = radeon_winsys->gb_pipes;
 383     caps->num_z_pipes = radeon_winsys->z_pipes;
 384
 385     r300_parse_chipset(caps);
 386
 387     r300screen->caps = caps;
 388     r300screen->screen.winsys = (struct pipe_winsys*)radeon_winsys;
 389     r300screen->screen.destroy = r300_destroy_screen;
 390     r300screen->screen.get_name = r300_get_name;
 391     r300screen->screen.get_vendor = r300_get_vendor;
 392     r300screen->screen.get_param = r300_get_param;
 393     r300screen->screen.get_paramf = r300_get_paramf;
 394     r300screen->screen.is_format_supported = r300_is_format_supported;
 395     r300screen->screen.get_tex_transfer = r300_get_tex_transfer;
 396     r300screen->screen.tex_transfer_destroy = r300_tex_transfer_destroy;
 397     r300screen->screen.transfer_map = r300_transfer_map;
 398     r300screen->screen.transfer_unmap = r300_transfer_unmap;
 399
 400     r300_init_screen_texture_functions(&r300screen->screen);
 401     u_simple_screen_init(&r300screen->screen);
 402
 403     return &r300screen->screen;
 404 }