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 #include "os/os_time.h"
  28 #include "vl/vl_decoder.h"
  29 #include "vl/vl_video_buffer.h"
  30
  31 #include "r300_context.h"
  32 #include "r300_texture.h"
  33 #include "r300_screen_buffer.h"
  34 #include "r300_state_inlines.h"
  35 #include "r300_public.h"
  36
  37 #include "draw/draw_context.h"
  38
  39 /* Return the identifier behind whom the brave coders responsible for this
  40  * amalgamation of code, sweat, and duct tape, routinely obscure their names.
  41  *
  42  * ...I should have just put "Corbin Simpson", but I'm not that cool.
  43  *
  44  * (Or egotistical. Yet.) */
  45 static const char* r300_get_vendor(struct pipe_screen* pscreen)
  46 {
  47     return "X.Org R300 Project";
  48 }
  49
  50 static const char* chip_families[] = {
  51     "unknown",
  52     "ATI R300",
  53     "ATI R350",
  54     "ATI RV350",
  55     "ATI RV370",
  56     "ATI RV380",
  57     "ATI RS400",
  58     "ATI RC410",
  59     "ATI RS480",
  60     "ATI R420",
  61     "ATI R423",
  62     "ATI R430",
  63     "ATI R480",
  64     "ATI R481",
  65     "ATI RV410",
  66     "ATI RS600",
  67     "ATI RS690",
  68     "ATI RS740",
  69     "ATI RV515",
  70     "ATI R520",
  71     "ATI RV530",
  72     "ATI R580",
  73     "ATI RV560",
  74     "ATI RV570"
  75 };
  76
  77 static const char* r300_get_name(struct pipe_screen* pscreen)
  78 {
  79     struct r300_screen* r300screen = r300_screen(pscreen);
  80
  81     return chip_families[r300screen->caps.family];
  82 }
  83
  84 static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
  85 {
  86     struct r300_screen* r300screen = r300_screen(pscreen);
  87     boolean is_r500 = r300screen->caps.is_r500;
  88
  89     switch (param) {
  90         /* Supported features (boolean caps). */
  91         case PIPE_CAP_NPOT_TEXTURES:
  92         case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
  93         case PIPE_CAP_TWO_SIDED_STENCIL:
  94         case PIPE_CAP_ANISOTROPIC_FILTER:
  95         case PIPE_CAP_POINT_SPRITE:
  96         case PIPE_CAP_OCCLUSION_QUERY:
  97         case PIPE_CAP_TEXTURE_SHADOW_MAP:
  98         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  99         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 100         case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 101         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 102         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 103         case PIPE_CAP_CONDITIONAL_RENDER:
 104         case PIPE_CAP_TEXTURE_BARRIER:
 105         case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 106         case PIPE_CAP_USER_INDEX_BUFFERS:
 107         case PIPE_CAP_USER_CONSTANT_BUFFERS:
 108         case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 109             return 1;
 110
 111         case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 112             return R300_BUFFER_ALIGNMENT;
 113
 114         case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 115             return 16;
 116
 117         case PIPE_CAP_GLSL_FEATURE_LEVEL:
 118             return 120;
 119
 120         /* r300 cannot do swizzling of compressed textures. Supported otherwise. */
 121         case PIPE_CAP_TEXTURE_SWIZZLE:
 122             return util_format_s3tc_enabled ? r300screen->caps.dxtc_swizzle : 1;
 123
 124         /* We don't support color clamping on r500, so that we can use color
 125          * intepolators for generic varyings. */
 126         case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 127             return !is_r500;
 128
 129         /* Supported on r500 only. */
 130         case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 131         case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 132         case PIPE_CAP_SM3:
 133             return is_r500 ? 1 : 0;
 134
 135         /* Unsupported features. */
 136         case PIPE_CAP_QUERY_TIME_ELAPSED:
 137         case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 138         case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 139         case PIPE_CAP_INDEP_BLEND_ENABLE:
 140         case PIPE_CAP_INDEP_BLEND_FUNC:
 141         case PIPE_CAP_DEPTH_CLIP_DISABLE:
 142         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 143         case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 144         case PIPE_CAP_TGSI_INSTANCEID:
 145         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 146         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 147         case PIPE_CAP_SEAMLESS_CUBE_MAP:
 148         case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 149         case PIPE_CAP_SCALED_RESOLVE:
 150         case PIPE_CAP_MIN_TEXEL_OFFSET:
 151         case PIPE_CAP_MAX_TEXEL_OFFSET:
 152         case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 153         case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 154         case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 155         case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 156         case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 157         case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 158         case PIPE_CAP_COMPUTE:
 159         case PIPE_CAP_START_INSTANCE:
 160         case PIPE_CAP_QUERY_TIMESTAMP:
 161         case PIPE_CAP_TEXTURE_MULTISAMPLE:
 162         case PIPE_CAP_CUBE_MAP_ARRAY:
 163         case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 164         case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 165         case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 166         case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 167         case PIPE_CAP_TGSI_VS_LAYER:
 168             return 0;
 169
 170         /* SWTCL-only features. */
 171         case PIPE_CAP_PRIMITIVE_RESTART:
 172         case PIPE_CAP_USER_VERTEX_BUFFERS:
 173             return !r300screen->caps.has_tcl;
 174
 175         /* HWTCL-only features / limitations. */
 176         case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 177         case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 178         case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 179             return r300screen->caps.has_tcl;
 180         case PIPE_CAP_TGSI_TEXCOORD:
 181             return 0;
 182
 183         /* Texturing. */
 184         case PIPE_CAP_MAX_COMBINED_SAMPLERS:
 185             return r300screen->caps.num_tex_units;
 186         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 187         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 188         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 189             /* 13 == 4096, 12 == 2048 */
 190             return is_r500 ? 13 : 12;
 191
 192         /* Render targets. */
 193         case PIPE_CAP_MAX_RENDER_TARGETS:
 194             return 4;
 195         case PIPE_CAP_ENDIANNESS:
 196             return PIPE_ENDIAN_LITTLE;
 197
 198         case PIPE_CAP_MAX_VIEWPORTS:
 199             return 1;
 200     }
 201     return 0;
 202 }
 203
 204 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 205 {
 206    struct r300_screen* r300screen = r300_screen(pscreen);
 207    boolean is_r400 = r300screen->caps.is_r400;
 208    boolean is_r500 = r300screen->caps.is_r500;
 209
 210    switch (shader) {
 211     case PIPE_SHADER_FRAGMENT:
 212         switch (param)
 213         {
 214         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 215             return is_r500 || is_r400 ? 512 : 96;
 216         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 217             return is_r500 || is_r400 ? 512 : 64;
 218         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 219             return is_r500 || is_r400 ? 512 : 32;
 220         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 221             return is_r500 ? 511 : 4;
 222         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 223             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 224             /* Fragment shader limits. */
 225         case PIPE_SHADER_CAP_MAX_INPUTS:
 226             /* 2 colors + 8 texcoords are always supported
 227              * (minus fog and wpos).
 228              *
 229              * R500 has the ability to turn 3rd and 4th color into
 230              * additional texcoords but there is no two-sided color
 231              * selection then. However the facing bit can be used instead. */
 232             return 10;
 233         case PIPE_SHADER_CAP_MAX_CONSTS:
 234             return is_r500 ? 256 : 32;
 235         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 236             return 1;
 237         case PIPE_SHADER_CAP_MAX_TEMPS:
 238             return is_r500 ? 128 : is_r400 ? 64 : 32;
 239         case PIPE_SHADER_CAP_MAX_PREDS:
 240             return is_r500 ? 1 : 0;
 241         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 242         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 243            return r300screen->caps.num_tex_units;
 244         case PIPE_SHADER_CAP_MAX_ADDRS:
 245         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 246         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 247         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 248         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 249         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 250         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 251         case PIPE_SHADER_CAP_SUBROUTINES:
 252         case PIPE_SHADER_CAP_INTEGERS:
 253             return 0;
 254         case PIPE_SHADER_CAP_PREFERRED_IR:
 255             return PIPE_SHADER_IR_TGSI;
 256         }
 257         break;
 258     case PIPE_SHADER_VERTEX:
 259         switch (param)
 260         {
 261         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 262         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 263         case PIPE_SHADER_CAP_SUBROUTINES:
 264             return 0;
 265         default:;
 266         }
 267
 268         if (!r300screen->caps.has_tcl) {
 269             return draw_get_shader_param(shader, param);
 270         }
 271
 272         switch (param)
 273         {
 274         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 275         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 276             return is_r500 ? 1024 : 256;
 277         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 278             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 279         case PIPE_SHADER_CAP_MAX_INPUTS:
 280             return 16;
 281         case PIPE_SHADER_CAP_MAX_CONSTS:
 282             return 256;
 283         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 284             return 1;
 285         case PIPE_SHADER_CAP_MAX_TEMPS:
 286             return 32;
 287         case PIPE_SHADER_CAP_MAX_ADDRS:
 288             return 1; /* XXX guessed */
 289         case PIPE_SHADER_CAP_MAX_PREDS:
 290             return is_r500 ? 4 : 0; /* XXX guessed. */
 291         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 292             return 1;
 293         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 294         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 295         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 296         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 297         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 298         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 299         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 300         case PIPE_SHADER_CAP_SUBROUTINES:
 301         case PIPE_SHADER_CAP_INTEGERS:
 302         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 303         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 304             return 0;
 305         case PIPE_SHADER_CAP_PREFERRED_IR:
 306             return PIPE_SHADER_IR_TGSI;
 307         }
 308         break;
 309     }
 310     return 0;
 311 }
 312
 313 static float r300_get_paramf(struct pipe_screen* pscreen,
 314                              enum pipe_capf param)
 315 {
 316     struct r300_screen* r300screen = r300_screen(pscreen);
 317
 318     switch (param) {
 319         case PIPE_CAPF_MAX_LINE_WIDTH:
 320         case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 321         case PIPE_CAPF_MAX_POINT_WIDTH:
 322         case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 323             /* The maximum dimensions of the colorbuffer are our practical
 324              * rendering limits. 2048 pixels should be enough for anybody. */
 325             if (r300screen->caps.is_r500) {
 326                 return 4096.0f;
 327             } else if (r300screen->caps.is_r400) {
 328                 return 4021.0f;
 329             } else {
 330                 return 2560.0f;
 331             }
 332         case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 333             return 16.0f;
 334         case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 335             return 16.0f;
 336         case PIPE_CAPF_GUARD_BAND_LEFT:
 337         case PIPE_CAPF_GUARD_BAND_TOP:
 338         case PIPE_CAPF_GUARD_BAND_RIGHT:
 339         case PIPE_CAPF_GUARD_BAND_BOTTOM:
 340             /* XXX I don't know what these should be but the least we can do is
 341              * silence the potential error message */
 342             return 0.0f;
 343         default:
 344             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 345                          param);
 346             return 0.0f;
 347     }
 348 }
 349
 350 static int r300_get_video_param(struct pipe_screen *screen,
 351                                 enum pipe_video_profile profile,
 352                                 enum pipe_video_entrypoint entrypoint,
 353                                 enum pipe_video_cap param)
 354 {
 355    switch (param) {
 356       case PIPE_VIDEO_CAP_SUPPORTED:
 357          return vl_profile_supported(screen, profile, entrypoint);
 358       case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 359          return 0;
 360       case PIPE_VIDEO_CAP_MAX_WIDTH:
 361       case PIPE_VIDEO_CAP_MAX_HEIGHT:
 362          return vl_video_buffer_max_size(screen);
 363       case PIPE_VIDEO_CAP_PREFERED_FORMAT:
 364          return PIPE_FORMAT_NV12;
 365       case PIPE_VIDEO_CAP_PREFERS_INTERLACED:
 366          return false;
 367       case PIPE_VIDEO_CAP_SUPPORTS_INTERLACED:
 368          return false;
 369       case PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE:
 370          return true;
 371       case PIPE_VIDEO_CAP_MAX_LEVEL:
 372          return vl_level_supported(screen, profile);
 373       default:
 374          return 0;
 375    }
 376 }
 377
 378 /**
 379  * Whether the format matches:
 380  *   PIPE_FORMAT_?10?10?10?2_UNORM
 381  */
 382 static INLINE boolean
 383 util_format_is_rgba1010102_variant(const struct util_format_description *desc)
 384 {
 385    static const unsigned size[4] = {10, 10, 10, 2};
 386    unsigned chan;
 387
 388    if (desc->block.width != 1 ||
 389        desc->block.height != 1 ||
 390        desc->block.bits != 32)
 391       return FALSE;
 392
 393    for (chan = 0; chan < 4; ++chan) {
 394       if(desc->channel[chan].type != UTIL_FORMAT_TYPE_UNSIGNED &&
 395          desc->channel[chan].type != UTIL_FORMAT_TYPE_VOID)
 396          return FALSE;
 397       if (desc->channel[chan].size != size[chan])
 398          return FALSE;
 399    }
 400
 401    return TRUE;
 402 }
 403
 404 static boolean r300_is_format_supported(struct pipe_screen* screen,
 405                                         enum pipe_format format,
 406                                         enum pipe_texture_target target,
 407                                         unsigned sample_count,
 408                                         unsigned usage)
 409 {
 410     uint32_t retval = 0;
 411     boolean drm_2_8_0 = r300_screen(screen)->info.drm_minor >= 8;
 412     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 413     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 414     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 415                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 416                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 417                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 418     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 419                        format == PIPE_FORMAT_RGTC1_SNORM ||
 420                        format == PIPE_FORMAT_LATC1_UNORM ||
 421                        format == PIPE_FORMAT_LATC1_SNORM;
 422     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 423                        format == PIPE_FORMAT_RGTC2_SNORM ||
 424                        format == PIPE_FORMAT_LATC2_UNORM ||
 425                        format == PIPE_FORMAT_LATC2_SNORM;
 426     boolean is_x16f_xy16f = format == PIPE_FORMAT_R16_FLOAT ||
 427                             format == PIPE_FORMAT_R16G16_FLOAT ||
 428                             format == PIPE_FORMAT_A16_FLOAT ||
 429                             format == PIPE_FORMAT_L16_FLOAT ||
 430                             format == PIPE_FORMAT_L16A16_FLOAT ||
 431                             format == PIPE_FORMAT_R16A16_FLOAT ||
 432                             format == PIPE_FORMAT_I16_FLOAT;
 433     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 434                             format == PIPE_FORMAT_R16G16_FLOAT ||
 435                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 436                             format == PIPE_FORMAT_R16G16B16A16_FLOAT ||
 437                             format == PIPE_FORMAT_R16G16B16X16_FLOAT;
 438     const struct util_format_description *desc;
 439
 440     if (!util_format_is_supported(format, usage))
 441        return FALSE;
 442
 443     /* Check multisampling support. */
 444     switch (sample_count) {
 445         case 0:
 446         case 1:
 447             break;
 448         case 2:
 449         case 4:
 450         case 6:
 451             /* We need DRM 2.8.0. */
 452             if (!drm_2_8_0) {
 453                 return FALSE;
 454             }
 455             /* No texturing and scanout. */
 456             if (usage & (PIPE_BIND_SAMPLER_VIEW |
 457                          PIPE_BIND_DISPLAY_TARGET |
 458                          PIPE_BIND_SCANOUT)) {
 459                 return FALSE;
 460             }
 461
 462             desc = util_format_description(format);
 463
 464             if (is_r500) {
 465                 /* Only allow depth/stencil, RGBA8, RGBA1010102, RGBA16F. */
 466                 if (!util_format_is_depth_or_stencil(format) &&
 467                     !util_format_is_rgba8_variant(desc) &&
 468                     !util_format_is_rgba1010102_variant(desc) &&
 469                     format != PIPE_FORMAT_R16G16B16A16_FLOAT &&
 470                     format != PIPE_FORMAT_R16G16B16X16_FLOAT) {
 471                     return FALSE;
 472                 }
 473             } else {
 474                 /* Only allow depth/stencil, RGBA8. */
 475                 if (!util_format_is_depth_or_stencil(format) &&
 476                     !util_format_is_rgba8_variant(desc)) {
 477                     return FALSE;
 478                 }
 479             }
 480             break;
 481         default:
 482             return FALSE;
 483     }
 484
 485     /* Check sampler format support. */
 486     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 487         /* these two are broken for an unknown reason */
 488         format != PIPE_FORMAT_R8G8B8X8_SNORM &&
 489         format != PIPE_FORMAT_R16G16B16X16_SNORM &&
 490         /* ATI1N is r5xx-only. */
 491         (is_r500 || !is_ati1n) &&
 492         /* ATI2N is supported on r4xx-r5xx. */
 493         (is_r400 || is_r500 || !is_ati2n) &&
 494         /* R16F and RG16F texture support was added in as late as DRM 2.8.0 */
 495         (drm_2_8_0 || !is_x16f_xy16f) &&
 496         r300_is_sampler_format_supported(format)) {
 497         retval |= PIPE_BIND_SAMPLER_VIEW;
 498     }
 499
 500     /* Check colorbuffer format support. */
 501     if ((usage & (PIPE_BIND_RENDER_TARGET |
 502                   PIPE_BIND_DISPLAY_TARGET |
 503                   PIPE_BIND_SCANOUT |
 504                   PIPE_BIND_SHARED)) &&
 505         /* 2101010 cannot be rendered to on non-r5xx. */
 506         (!is_color2101010 || (is_r500 && drm_2_8_0)) &&
 507         r300_is_colorbuffer_format_supported(format)) {
 508         retval |= usage &
 509             (PIPE_BIND_RENDER_TARGET |
 510              PIPE_BIND_DISPLAY_TARGET |
 511              PIPE_BIND_SCANOUT |
 512              PIPE_BIND_SHARED);
 513     }
 514
 515     /* Check depth-stencil format support. */
 516     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 517         r300_is_zs_format_supported(format)) {
 518         retval |= PIPE_BIND_DEPTH_STENCIL;
 519     }
 520
 521     /* Check vertex buffer format support. */
 522     if (usage & PIPE_BIND_VERTEX_BUFFER) {
 523         if (r300_screen(screen)->caps.has_tcl) {
 524             /* Half float is supported on >= R400. */
 525             if ((is_r400 || is_r500 || !is_half_float) &&
 526                 r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
 527                 retval |= PIPE_BIND_VERTEX_BUFFER;
 528             }
 529         } else {
 530             /* SW TCL */
 531             if (!util_format_is_pure_integer(format)) {
 532                 retval |= PIPE_BIND_VERTEX_BUFFER;
 533             }
 534         }
 535     }
 536
 537     /* Transfers are always supported. */
 538     if (usage & PIPE_BIND_TRANSFER_READ)
 539         retval |= PIPE_BIND_TRANSFER_READ;
 540     if (usage & PIPE_BIND_TRANSFER_WRITE)
 541         retval |= PIPE_BIND_TRANSFER_WRITE;
 542
 543     return retval == usage;
 544 }
 545
 546 static void r300_destroy_screen(struct pipe_screen* pscreen)
 547 {
 548     struct r300_screen* r300screen = r300_screen(pscreen);
 549     struct radeon_winsys *rws = radeon_winsys(pscreen);
 550
 551     if (rws && !radeon_winsys_unref(rws))
 552       return;
 553
 554     pipe_mutex_destroy(r300screen->cmask_mutex);
 555
 556     if (rws)
 557       rws->destroy(rws);
 558
 559     FREE(r300screen);
 560 }
 561
 562 static void r300_fence_reference(struct pipe_screen *screen,
 563                                  struct pipe_fence_handle **ptr,
 564                                  struct pipe_fence_handle *fence)
 565 {
 566     struct radeon_winsys *rws = r300_screen(screen)->rws;
 567
 568     rws->fence_reference(ptr, fence);
 569 }
 570
 571 static boolean r300_fence_signalled(struct pipe_screen *screen,
 572                                     struct pipe_fence_handle *fence)
 573 {
 574     struct radeon_winsys *rws = r300_screen(screen)->rws;
 575
 576     return rws->fence_wait(rws, fence, 0);
 577 }
 578
 579 static boolean r300_fence_finish(struct pipe_screen *screen,
 580                                  struct pipe_fence_handle *fence,
 581                                  uint64_t timeout)
 582 {
 583     struct radeon_winsys *rws = r300_screen(screen)->rws;
 584
 585     return rws->fence_wait(rws, fence, timeout);
 586 }
 587
 588 struct pipe_screen* r300_screen_create(struct radeon_winsys *rws)
 589 {
 590     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 591
 592     if (!r300screen) {
 593         FREE(r300screen);
 594         return NULL;
 595     }
 596
 597     rws->query_info(rws, &r300screen->info);
 598
 599     r300_init_debug(r300screen);
 600     r300_parse_chipset(r300screen->info.pci_id, &r300screen->caps);
 601
 602     if (SCREEN_DBG_ON(r300screen, DBG_NO_ZMASK))
 603         r300screen->caps.zmask_ram = 0;
 604     if (SCREEN_DBG_ON(r300screen, DBG_NO_HIZ))
 605         r300screen->caps.hiz_ram = 0;
 606
 607     if (r300screen->info.drm_minor < 8)
 608         r300screen->caps.has_us_format = FALSE;
 609
 610     r300screen->rws = rws;
 611     r300screen->screen.destroy = r300_destroy_screen;
 612     r300screen->screen.get_name = r300_get_name;
 613     r300screen->screen.get_vendor = r300_get_vendor;
 614     r300screen->screen.get_param = r300_get_param;
 615     r300screen->screen.get_shader_param = r300_get_shader_param;
 616     r300screen->screen.get_paramf = r300_get_paramf;
 617     r300screen->screen.get_video_param = r300_get_video_param;
 618     r300screen->screen.is_format_supported = r300_is_format_supported;
 619     r300screen->screen.is_video_format_supported = vl_video_buffer_is_format_supported;
 620     r300screen->screen.context_create = r300_create_context;
 621     r300screen->screen.fence_reference = r300_fence_reference;
 622     r300screen->screen.fence_signalled = r300_fence_signalled;
 623     r300screen->screen.fence_finish = r300_fence_finish;
 624
 625     r300_init_screen_resource_functions(r300screen);
 626
 627     util_format_s3tc_init();
 628     pipe_mutex_init(r300screen->cmask_mutex);
 629
 630     return &r300screen->screen;
 631 }