src/gallium/drivers/r300/r300_screen.c

   1 /*
   2  * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
   3  * Copyright 2010 Marek Olšák <maraeo@gmail.com>
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * on the rights to use, copy, modify, merge, publish, distribute, sub
   9  * license, and/or sell copies of the Software, and to permit persons to whom
  10  * the Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  22  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  23
  24 #include "util/u_format.h"
  25 #include "util/u_format_s3tc.h"
  26 #include "util/u_memory.h"
  27
  28 #include "r300_context.h"
  29 #include "r300_texture.h"
  30 #include "r300_screen_buffer.h"
  31 #include "r300_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, enum pipe_cap param)
  80 {
  81     struct r300_screen* r300screen = r300_screen(pscreen);
  82     boolean is_r400 = r300screen->caps.is_r400;
  83     boolean is_r500 = r300screen->caps.is_r500;
  84
  85     /* XXX extended shader capabilities of r400 unimplemented */
  86     is_r400 = FALSE;
  87
  88     switch (param) {
  89         /* Supported features (boolean caps). */
  90         case PIPE_CAP_NPOT_TEXTURES:
  91         case PIPE_CAP_TWO_SIDED_STENCIL:
  92         case PIPE_CAP_GLSL:
  93             /* I'll be frank. This is a lie.
  94              *
  95              * We don't truly support GLSL on any of this driver's chipsets.
  96              * To be fair, no chipset supports the full GLSL specification
  97              * to the best of our knowledge, but some of the less esoteric
  98              * features are still missing here.
  99              *
 100              * Rather than cripple ourselves intentionally, I'm going to set
 101              * this flag, and as Gallium's interface continues to change, I
 102              * hope that this single monolithic GLSL enable can slowly get
 103              * split down into many different pieces and the state tracker
 104              * will handle fallbacks transparently, like it should.
 105              *
 106              * ~ C.
 107              */
 108         case PIPE_CAP_ANISOTROPIC_FILTER:
 109         case PIPE_CAP_POINT_SPRITE:
 110         case PIPE_CAP_OCCLUSION_QUERY:
 111         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 112         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 113         case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
 114         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 115             return 1;
 116
 117         /* Unsupported features (boolean caps). */
 118         case PIPE_CAP_DUAL_SOURCE_BLEND:
 119         case PIPE_CAP_TGSI_CONT_SUPPORTED:
 120         case PIPE_CAP_INDEP_BLEND_ENABLE:
 121         case PIPE_CAP_INDEP_BLEND_FUNC:
 122             return 0;
 123
 124         /* Texturing. */
 125         case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
 126         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 127             return r300screen->caps.num_tex_units;
 128         case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
 129             return 0;
 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             /* 13 == 4096, 12 == 2048 */
 134             return is_r500 ? 13 : 12;
 135
 136         /* Render targets. */
 137         case PIPE_CAP_MAX_RENDER_TARGETS:
 138             return 4;
 139
 140         /* General shader limits and features. */
 141         case PIPE_CAP_SM3:
 142             return is_r500 ? 1 : 0;
 143         case PIPE_CAP_MAX_CONST_BUFFERS:
 144             return 1;
 145         case PIPE_CAP_MAX_CONST_BUFFER_SIZE:
 146             return 256;
 147
 148         /* Fragment coordinate conventions. */
 149         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 150         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 151             return 1;
 152         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 153         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 154             return 0;
 155
 156         /* Fragment shader limits. */
 157         case PIPE_CAP_MAX_FS_INSTRUCTIONS:
 158             return is_r500 || is_r400 ? 512 : 96;
 159         case PIPE_CAP_MAX_FS_ALU_INSTRUCTIONS:
 160             return is_r500 || is_r400 ? 512 : 64;
 161         case PIPE_CAP_MAX_FS_TEX_INSTRUCTIONS:
 162             return is_r500 || is_r400 ? 512 : 32;
 163         case PIPE_CAP_MAX_FS_TEX_INDIRECTIONS:
 164             return is_r500 ? 511 : 4;
 165         case PIPE_CAP_MAX_FS_CONTROL_FLOW_DEPTH:
 166             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 167         case PIPE_CAP_MAX_FS_INPUTS:
 168             /* 2 colors + 8 texcoords are always supported
 169              * (minus fog and wpos).
 170              *
 171              * R500 has the ability to turn 3rd and 4th color into
 172              * additional texcoords but there is no two-sided color
 173              * selection then. However the facing bit can be used instead. */
 174             return 10;
 175         case PIPE_CAP_MAX_FS_CONSTS:
 176             return is_r500 ? 256 : 32;
 177         case PIPE_CAP_MAX_FS_TEMPS:
 178             return is_r500 ? 128 : is_r400 ? 64 : 32;
 179         case PIPE_CAP_MAX_FS_ADDRS:
 180             return 0;
 181         case PIPE_CAP_MAX_FS_PREDS:
 182             return is_r500 ? 1 : 0;
 183
 184         /* Vertex shader limits. */
 185         case PIPE_CAP_MAX_VS_INSTRUCTIONS:
 186         case PIPE_CAP_MAX_VS_ALU_INSTRUCTIONS:
 187             return is_r500 ? 1024 : 256;
 188         case PIPE_CAP_MAX_VS_TEX_INSTRUCTIONS:
 189         case PIPE_CAP_MAX_VS_TEX_INDIRECTIONS:
 190             return 0;
 191         case PIPE_CAP_MAX_VS_CONTROL_FLOW_DEPTH:
 192             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 193         case PIPE_CAP_MAX_VS_INPUTS:
 194             return 16;
 195         case PIPE_CAP_MAX_VS_CONSTS:
 196             return 256;
 197         case PIPE_CAP_MAX_VS_TEMPS:
 198             return 32;
 199         case PIPE_CAP_MAX_VS_ADDRS:
 200             return 1; /* XXX guessed */
 201         case PIPE_CAP_MAX_VS_PREDS:
 202             return is_r500 ? 4 : 0; /* XXX guessed. */
 203
 204         default:
 205             fprintf(stderr, "r300: Implementation error: Bad param %d\n",
 206                 param);
 207             return 0;
 208     }
 209 }
 210
 211 static float r300_get_paramf(struct pipe_screen* pscreen, enum pipe_cap param)
 212 {
 213     struct r300_screen* r300screen = r300_screen(pscreen);
 214
 215     switch (param) {
 216         case PIPE_CAP_MAX_LINE_WIDTH:
 217         case PIPE_CAP_MAX_LINE_WIDTH_AA:
 218         case PIPE_CAP_MAX_POINT_WIDTH:
 219         case PIPE_CAP_MAX_POINT_WIDTH_AA:
 220             /* The maximum dimensions of the colorbuffer are our practical
 221              * rendering limits. 2048 pixels should be enough for anybody. */
 222             if (r300screen->caps.is_r500) {
 223                 return 4096.0f;
 224             } else if (r300screen->caps.is_r400) {
 225                 return 4021.0f;
 226             } else {
 227                 return 2560.0f;
 228             }
 229         case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 230             return 16.0f;
 231         case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 232             return 16.0f;
 233         default:
 234             fprintf(stderr, "r300: Implementation error: Bad paramf %d\n",
 235                 param);
 236             return 0.0f;
 237     }
 238 }
 239
 240 static boolean r300_is_format_supported(struct pipe_screen* screen,
 241                                         enum pipe_format format,
 242                                         enum pipe_texture_target target,
 243                                         unsigned usage,
 244                                         unsigned geom_flags)
 245 {
 246     uint32_t retval = 0;
 247     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 248     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 249     boolean is_z24 = format == PIPE_FORMAT_X8Z24_UNORM ||
 250                      format == PIPE_FORMAT_S8_USCALED_Z24_UNORM;
 251     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 252                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 253                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 254                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 255     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 256                        format == PIPE_FORMAT_RGTC1_SNORM;
 257     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 258                        format == PIPE_FORMAT_RGTC2_SNORM;
 259
 260     if (target >= PIPE_MAX_TEXTURE_TYPES) {
 261         fprintf(stderr, "r300: Implementation error: Received bogus texture "
 262             "target %d in %s\n", target, __FUNCTION__);
 263         return FALSE;
 264     }
 265
 266     /* Check sampler format support. */
 267     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 268         /* Z24 cannot be sampled from on non-r5xx. */
 269         (is_r500 || !is_z24) &&
 270         /* ATI1N is r5xx-only. */
 271         (is_r500 || !is_ati1n) &&
 272         /* ATI2N is supported on r4xx-r5xx. */
 273         (is_r400 || is_r500 || !is_ati2n) &&
 274         r300_is_sampler_format_supported(format)) {
 275         retval |= PIPE_BIND_SAMPLER_VIEW;
 276     }
 277
 278     /* Check colorbuffer format support. */
 279     if ((usage & (PIPE_BIND_RENDER_TARGET |
 280                   PIPE_BIND_DISPLAY_TARGET |
 281                   PIPE_BIND_SCANOUT |
 282                   PIPE_BIND_SHARED)) &&
 283         /* 2101010 cannot be rendered to on non-r5xx. */
 284         (is_r500 || !is_color2101010) &&
 285         r300_is_colorbuffer_format_supported(format)) {
 286         retval |= usage &
 287             (PIPE_BIND_RENDER_TARGET |
 288              PIPE_BIND_DISPLAY_TARGET |
 289              PIPE_BIND_SCANOUT |
 290              PIPE_BIND_SHARED);
 291     }
 292
 293     /* Check depth-stencil format support. */
 294     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 295         r300_is_zs_format_supported(format)) {
 296         retval |= PIPE_BIND_DEPTH_STENCIL;
 297     }
 298
 299     return retval == usage;
 300 }
 301
 302 static void r300_destroy_screen(struct pipe_screen* pscreen)
 303 {
 304     struct r300_screen* r300screen = r300_screen(pscreen);
 305     struct r300_winsys_screen *rws = r300_winsys_screen(pscreen);
 306
 307     if (rws)
 308       rws->destroy(rws);
 309
 310     FREE(r300screen);
 311 }
 312
 313 static void r300_fence_reference(struct pipe_screen *screen,
 314                                  struct pipe_fence_handle **ptr,
 315                                  struct pipe_fence_handle *fence)
 316 {
 317 }
 318
 319 static int r300_fence_signalled(struct pipe_screen *screen,
 320                                 struct pipe_fence_handle *fence,
 321                                 unsigned flags)
 322 {
 323     return 0;
 324 }
 325
 326 static int r300_fence_finish(struct pipe_screen *screen,
 327                              struct pipe_fence_handle *fence,
 328                              unsigned flags)
 329 {
 330     return 0;
 331 }
 332
 333 struct pipe_screen* r300_create_screen(struct r300_winsys_screen *rws)
 334 {
 335     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 336
 337     if (!r300screen) {
 338         FREE(r300screen);
 339         return NULL;
 340     }
 341
 342     r300screen->caps.pci_id = rws->get_value(rws, R300_VID_PCI_ID);
 343     r300screen->caps.num_frag_pipes = rws->get_value(rws, R300_VID_GB_PIPES);
 344     r300screen->caps.num_z_pipes = rws->get_value(rws, R300_VID_Z_PIPES);
 345
 346     r300_init_debug(r300screen);
 347     r300_parse_chipset(&r300screen->caps);
 348
 349     r300screen->rws = rws;
 350     r300screen->screen.winsys = (struct pipe_winsys*)rws;
 351     r300screen->screen.destroy = r300_destroy_screen;
 352     r300screen->screen.get_name = r300_get_name;
 353     r300screen->screen.get_vendor = r300_get_vendor;
 354     r300screen->screen.get_param = r300_get_param;
 355     r300screen->screen.get_paramf = r300_get_paramf;
 356     r300screen->screen.is_format_supported = r300_is_format_supported;
 357     r300screen->screen.context_create = r300_create_context;
 358
 359     r300screen->screen.fence_reference = r300_fence_reference;
 360     r300screen->screen.fence_signalled = r300_fence_signalled;
 361     r300screen->screen.fence_finish = r300_fence_finish;
 362
 363     r300_init_screen_resource_functions(r300screen);
 364
 365     util_format_s3tc_init();
 366
 367     return &r300screen->screen;
 368 }
 369
 370 struct r300_winsys_screen *
 371 r300_winsys_screen(struct pipe_screen *screen)
 372 {
 373     return r300_screen(screen)->rws;
 374 }