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 "util/u_inlines.h"
  24 #include "util/u_format.h"
  25 #include "util/u_memory.h"
  26 #include "util/u_simple_screen.h"
  27
  28 #include "r300_context.h"
  29 #include "r300_screen.h"
  30 #include "r300_state_inlines.h"
  31 #include "r300_texture.h"
  32
  33 #include "radeon_winsys.h"
  34 #include "r300_winsys.h"
  35
  36 /* Return the identifier behind whom the brave coders responsible for this
  37  * amalgamation of code, sweat, and duct tape, routinely obscure their names.
  38  *
  39  * ...I should have just put "Corbin Simpson", but I'm not that cool.
  40  *
  41  * (Or egotistical. Yet.) */
  42 static const char* r300_get_vendor(struct pipe_screen* pscreen)
  43 {
  44     return "X.Org R300 Project";
  45 }
  46
  47 static const char* chip_families[] = {
  48     "R300",
  49     "R350",
  50     "R360",
  51     "RV350",
  52     "RV370",
  53     "RV380",
  54     "R420",
  55     "R423",
  56     "R430",
  57     "R480",
  58     "R481",
  59     "RV410",
  60     "RS400",
  61     "RC410",
  62     "RS480",
  63     "RS482",
  64     "RS600",
  65     "RS690",
  66     "RS740",
  67     "RV515",
  68     "R520",
  69     "RV530",
  70     "R580",
  71     "RV560",
  72     "RV570"
  73 };
  74
  75 static const char* r300_get_name(struct pipe_screen* pscreen)
  76 {
  77     struct r300_screen* r300screen = r300_screen(pscreen);
  78
  79     return chip_families[r300screen->caps->family];
  80 }
  81
  82 static int r300_get_param(struct pipe_screen* pscreen, int param)
  83 {
  84     struct r300_screen* r300screen = r300_screen(pscreen);
  85
  86     switch (param) {
  87         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  88         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
  89             /* XXX I'm told this goes up to 16 */
  90             return 8;
  91         case PIPE_CAP_NPOT_TEXTURES:
  92             /* XXX enable now to get GL2.1 API,
  93              * figure out later how to emulate this */
  94             return 1;
  95         case PIPE_CAP_TWO_SIDED_STENCIL:
  96             if (r300screen->caps->is_r500) {
  97                 return 1;
  98             } else {
  99                 return 0;
 100             }
 101         case PIPE_CAP_GLSL:
 102             /* I'll be frank. This is a lie.
 103              *
 104              * We don't truly support GLSL on any of this driver's chipsets.
 105              * To be fair, no chipset supports the full GLSL specification
 106              * to the best of our knowledge, but some of the less esoteric
 107              * features are still missing here.
 108              *
 109              * Rather than cripple ourselves intentionally, I'm going to set
 110              * this flag, and as Gallium's interface continues to change, I
 111              * hope that this single monolithic GLSL enable can slowly get
 112              * split down into many different pieces and the state tracker
 113              * will handle fallbacks transparently, like it should.
 114              *
 115              * ~ C.
 116              */
 117             return 1;
 118         case PIPE_CAP_DUAL_SOURCE_BLEND:
 119             return 0;
 120         case PIPE_CAP_ANISOTROPIC_FILTER:
 121             return 1;
 122         case PIPE_CAP_POINT_SPRITE:
 123             return 1;
 124         case PIPE_CAP_MAX_RENDER_TARGETS:
 125             return 4;
 126         case PIPE_CAP_OCCLUSION_QUERY:
 127             return 1;
 128         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 129             return 1;
 130         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 131         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 132         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 133             if (r300screen->caps->is_r500) {
 134                 /* 13 == 4096 */
 135                 return 13;
 136             } else {
 137                 /* 12 == 2048 */
 138                 return 12;
 139             }
 140         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 141             return 1;
 142         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 143             return 1;
 144         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 145             return 0;
 146         case PIPE_CAP_TGSI_CONT_SUPPORTED:
 147             return 0;
 148         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 149             return 1;
 150         case PIPE_CAP_SM3:
 151             if (r300screen->caps->is_r500) {
 152                 return 1;
 153             } else {
 154                 return 0;
 155             }
 156         case PIPE_CAP_MAX_CONST_BUFFERS:
 157             return 1;
 158         case PIPE_CAP_MAX_CONST_BUFFER_SIZE:
 159             return 256;
 160         case PIPE_CAP_INDEP_BLEND_ENABLE:
 161             return 0;
 162         case PIPE_CAP_INDEP_BLEND_FUNC:
 163             return 0;
 164         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 165         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 166             return 1;
 167         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 168         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 169             return 0;
 170         default:
 171             debug_printf("r300: Implementation error: Bad param %d\n",
 172                 param);
 173             return 0;
 174     }
 175 }
 176
 177 static float r300_get_paramf(struct pipe_screen* pscreen, int param)
 178 {
 179     struct r300_screen* r300screen = r300_screen(pscreen);
 180
 181     switch (param) {
 182         case PIPE_CAP_MAX_LINE_WIDTH:
 183         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 184         case PIPE_CAP_MAX_POINT_WIDTH:
 185         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 186             /* The maximum dimensions of the colorbuffer are our practical
 187              * rendering limits. 2048 pixels should be enough for anybody. */
 188             if (r300screen->caps->is_r500) {
 189                 return 4096.0f;
 190             } else if (r300screen->caps->is_r400) {
 191                 return 4021.0f;
 192             } else {
 193                 return 2560.0f;
 194             }
 195         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 196             return 16.0f;
 197         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 198             return 16.0f;
 199         default:
 200             debug_printf("r300: Implementation error: Bad paramf %d\n",
 201                 param);
 202             return 0.0f;
 203     }
 204 }
 205
 206 static boolean r300_is_format_supported(struct pipe_screen* screen,
 207                                         enum pipe_format format,
 208                                         enum pipe_texture_target target,
 209                                         unsigned usage,
 210                                         unsigned geom_flags)
 211 {
 212     uint32_t retval = 0;
 213     boolean is_r500 = r300_screen(screen)->caps->is_r500;
 214     boolean is_z24 = format == PIPE_FORMAT_Z24X8_UNORM ||
 215                      format == PIPE_FORMAT_Z24S8_UNORM;
 216     boolean is_color2101010 = format == PIPE_FORMAT_A2B10G10R10_UNORM;
 217
 218     if (target >= PIPE_MAX_TEXTURE_TYPES) {
 219         debug_printf("r300: Implementation error: Received bogus texture "
 220             "target %d in %s\n", target, __FUNCTION__);
 221         return FALSE;
 222     }
 223
 224     /* Check sampler format support. */
 225     if ((usage & PIPE_TEXTURE_USAGE_SAMPLER) &&
 226         /* Z24 cannot be sampled from on non-r5xx. */
 227         (is_r500 || !is_z24) &&
 228         r300_is_sampler_format_supported(format)) {
 229         retval |= PIPE_TEXTURE_USAGE_SAMPLER;
 230     }
 231
 232     /* Check colorbuffer format support. */
 233     if ((usage & (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 234                   PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 235                   PIPE_TEXTURE_USAGE_PRIMARY)) &&
 236         /* 2101010 cannot be rendered to on non-r5xx. */
 237         (is_r500 || !is_color2101010) &&
 238         r300_is_colorbuffer_format_supported(format)) {
 239         retval |= usage &
 240             (PIPE_TEXTURE_USAGE_RENDER_TARGET |
 241              PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
 242              PIPE_TEXTURE_USAGE_PRIMARY);
 243     }
 244
 245     /* Check depth-stencil format support. */
 246     if (usage & PIPE_TEXTURE_USAGE_DEPTH_STENCIL &&
 247         r300_is_zs_format_supported(format)) {
 248         retval |= PIPE_TEXTURE_USAGE_DEPTH_STENCIL;
 249     }
 250
 251     return retval == usage;
 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     struct r300_screen *rscreen = r300_screen(screen);
 264     unsigned offset;
 265
 266     offset = r300_texture_get_offset(tex, level, zslice, face);  /* in bytes */
 267
 268     trans = CALLOC_STRUCT(r300_transfer);
 269     if (trans) {
 270         pipe_texture_reference(&trans->transfer.texture, texture);
 271         trans->transfer.x = x;
 272         trans->transfer.y = y;
 273         trans->transfer.width = w;
 274         trans->transfer.height = h;
 275         trans->transfer.stride = r300_texture_get_stride(rscreen, tex, level);
 276         trans->transfer.usage = usage;
 277         trans->transfer.zslice = zslice;
 278         trans->transfer.face = face;
 279
 280         trans->offset = offset;
 281     }
 282     return &trans->transfer;
 283 }
 284
 285 static void
 286 r300_tex_transfer_destroy(struct pipe_transfer *trans)
 287 {
 288    pipe_texture_reference(&trans->texture, NULL);
 289    FREE(trans);
 290 }
 291
 292 static void* r300_transfer_map(struct pipe_screen* screen,
 293                               struct pipe_transfer* transfer)
 294 {
 295     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 296     char* map;
 297     enum pipe_format format = tex->tex.format;
 298
 299     map = pipe_buffer_map(screen, tex->buffer,
 300                           pipe_transfer_buffer_flags(transfer));
 301
 302     if (!map) {
 303         return NULL;
 304     }
 305
 306     return map + r300_transfer(transfer)->offset +
 307         transfer->y / util_format_get_blockheight(format) * transfer->stride +
 308         transfer->x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
 309 }
 310
 311 static void r300_transfer_unmap(struct pipe_screen* screen,
 312                                 struct pipe_transfer* transfer)
 313 {
 314     struct r300_texture* tex = (struct r300_texture*)transfer->texture;
 315     pipe_buffer_unmap(screen, tex->buffer);
 316 }
 317
 318 static void r300_destroy_screen(struct pipe_screen* pscreen)
 319 {
 320     struct r300_screen* r300screen = r300_screen(pscreen);
 321
 322     FREE(r300screen->caps);
 323     FREE(r300screen);
 324 }
 325
 326 struct pipe_screen* r300_create_screen(struct radeon_winsys* radeon_winsys)
 327 {
 328     struct r300_screen* r300screen = CALLOC_STRUCT(r300_screen);
 329     struct r300_capabilities* caps = CALLOC_STRUCT(r300_capabilities);
 330
 331     if (!r300screen || !caps) {
 332         FREE(r300screen);
 333         FREE(caps);
 334         return NULL;
 335     }
 336
 337     caps->pci_id = radeon_winsys->pci_id;
 338     caps->num_frag_pipes = radeon_winsys->gb_pipes;
 339     caps->num_z_pipes = radeon_winsys->z_pipes;
 340
 341     r300_init_debug(r300screen);
 342     r300_parse_chipset(caps);
 343
 344     r300screen->caps = caps;
 345     r300screen->radeon_winsys = radeon_winsys;
 346     r300screen->screen.winsys = (struct pipe_winsys*)radeon_winsys;
 347     r300screen->screen.destroy = r300_destroy_screen;
 348     r300screen->screen.get_name = r300_get_name;
 349     r300screen->screen.get_vendor = r300_get_vendor;
 350     r300screen->screen.get_param = r300_get_param;
 351     r300screen->screen.get_paramf = r300_get_paramf;
 352     r300screen->screen.is_format_supported = r300_is_format_supported;
 353     r300screen->screen.context_create = r300_create_context;
 354     r300screen->screen.get_tex_transfer = r300_get_tex_transfer;
 355     r300screen->screen.tex_transfer_destroy = r300_tex_transfer_destroy;
 356     r300screen->screen.transfer_map = r300_transfer_map;
 357     r300screen->screen.transfer_unmap = r300_transfer_unmap;
 358
 359     r300_init_screen_texture_functions(&r300screen->screen);
 360     u_simple_screen_init(&r300screen->screen);
 361
 362     return &r300screen->screen;
 363 }