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         case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 110             return 1;
 111
 112         case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 113             return R300_BUFFER_ALIGNMENT;
 114
 115         case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 116             return 16;
 117
 118         case PIPE_CAP_GLSL_FEATURE_LEVEL:
 119             return 120;
 120
 121         /* r300 cannot do swizzling of compressed textures. Supported otherwise. */
 122         case PIPE_CAP_TEXTURE_SWIZZLE:
 123             return util_format_s3tc_enabled ? r300screen->caps.dxtc_swizzle : 1;
 124
 125         /* We don't support color clamping on r500, so that we can use color
 126          * intepolators for generic varyings. */
 127         case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 128             return !is_r500;
 129
 130         /* Supported on r500 only. */
 131         case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 132         case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 133         case PIPE_CAP_SM3:
 134             return is_r500 ? 1 : 0;
 135
 136         /* Unsupported features. */
 137         case PIPE_CAP_QUERY_TIME_ELAPSED:
 138         case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 139         case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 140         case PIPE_CAP_INDEP_BLEND_ENABLE:
 141         case PIPE_CAP_INDEP_BLEND_FUNC:
 142         case PIPE_CAP_DEPTH_CLIP_DISABLE:
 143         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 144         case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 145         case PIPE_CAP_TGSI_INSTANCEID:
 146         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 147         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 148         case PIPE_CAP_SEAMLESS_CUBE_MAP:
 149         case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 150         case PIPE_CAP_MIN_TEXEL_OFFSET:
 151         case PIPE_CAP_MAX_TEXEL_OFFSET:
 152         case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 153         case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
 154         case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 155         case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 156         case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 157         case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 158         case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 159         case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 160         case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 161         case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 162         case PIPE_CAP_COMPUTE:
 163         case PIPE_CAP_START_INSTANCE:
 164         case PIPE_CAP_QUERY_TIMESTAMP:
 165         case PIPE_CAP_TEXTURE_MULTISAMPLE:
 166         case PIPE_CAP_CUBE_MAP_ARRAY:
 167         case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 168         case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 169         case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 170         case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 171         case PIPE_CAP_TGSI_VS_LAYER:
 172         case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 173         case PIPE_CAP_TEXTURE_GATHER_SM5:
 174         case PIPE_CAP_TEXTURE_QUERY_LOD:
 175         case PIPE_CAP_FAKE_SW_MSAA:
 176         case PIPE_CAP_SAMPLE_SHADING:
 177         case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 178         case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 179             return 0;
 180
 181         /* SWTCL-only features. */
 182         case PIPE_CAP_PRIMITIVE_RESTART:
 183         case PIPE_CAP_USER_VERTEX_BUFFERS:
 184             return !r300screen->caps.has_tcl;
 185
 186         /* HWTCL-only features / limitations. */
 187         case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 188         case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 189         case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 190             return r300screen->caps.has_tcl;
 191         case PIPE_CAP_TGSI_TEXCOORD:
 192             return 0;
 193
 194         /* Texturing. */
 195         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 196         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 197         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 198             /* 13 == 4096, 12 == 2048 */
 199             return is_r500 ? 13 : 12;
 200
 201         /* Render targets. */
 202         case PIPE_CAP_MAX_RENDER_TARGETS:
 203             return 4;
 204         case PIPE_CAP_ENDIANNESS:
 205             return PIPE_ENDIAN_LITTLE;
 206
 207         case PIPE_CAP_MAX_VIEWPORTS:
 208             return 1;
 209     }
 210     return 0;
 211 }
 212
 213 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 214 {
 215    struct r300_screen* r300screen = r300_screen(pscreen);
 216    boolean is_r400 = r300screen->caps.is_r400;
 217    boolean is_r500 = r300screen->caps.is_r500;
 218
 219    switch (shader) {
 220     case PIPE_SHADER_FRAGMENT:
 221         switch (param)
 222         {
 223         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 224             return is_r500 || is_r400 ? 512 : 96;
 225         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 226             return is_r500 || is_r400 ? 512 : 64;
 227         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 228             return is_r500 || is_r400 ? 512 : 32;
 229         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 230             return is_r500 ? 511 : 4;
 231         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 232             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 233             /* Fragment shader limits. */
 234         case PIPE_SHADER_CAP_MAX_INPUTS:
 235             /* 2 colors + 8 texcoords are always supported
 236              * (minus fog and wpos).
 237              *
 238              * R500 has the ability to turn 3rd and 4th color into
 239              * additional texcoords but there is no two-sided color
 240              * selection then. However the facing bit can be used instead. */
 241             return 10;
 242         case PIPE_SHADER_CAP_MAX_CONSTS:
 243             return is_r500 ? 256 : 32;
 244         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 245             return 1;
 246         case PIPE_SHADER_CAP_MAX_TEMPS:
 247             return is_r500 ? 128 : is_r400 ? 64 : 32;
 248         case PIPE_SHADER_CAP_MAX_PREDS:
 249             return is_r500 ? 1 : 0;
 250         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 251         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 252            return r300screen->caps.num_tex_units;
 253         case PIPE_SHADER_CAP_MAX_ADDRS:
 254         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 255         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 256         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 257         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 258         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 259         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 260         case PIPE_SHADER_CAP_SUBROUTINES:
 261         case PIPE_SHADER_CAP_INTEGERS:
 262             return 0;
 263         case PIPE_SHADER_CAP_PREFERRED_IR:
 264             return PIPE_SHADER_IR_TGSI;
 265         }
 266         break;
 267     case PIPE_SHADER_VERTEX:
 268         switch (param)
 269         {
 270         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 271         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 272         case PIPE_SHADER_CAP_SUBROUTINES:
 273             return 0;
 274         default:;
 275         }
 276
 277         if (!r300screen->caps.has_tcl) {
 278             return draw_get_shader_param(shader, param);
 279         }
 280
 281         switch (param)
 282         {
 283         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 284         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 285             return is_r500 ? 1024 : 256;
 286         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 287             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 288         case PIPE_SHADER_CAP_MAX_INPUTS:
 289             return 16;
 290         case PIPE_SHADER_CAP_MAX_CONSTS:
 291             return 256;
 292         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 293             return 1;
 294         case PIPE_SHADER_CAP_MAX_TEMPS:
 295             return 32;
 296         case PIPE_SHADER_CAP_MAX_ADDRS:
 297             return 1; /* XXX guessed */
 298         case PIPE_SHADER_CAP_MAX_PREDS:
 299             return is_r500 ? 4 : 0; /* XXX guessed. */
 300         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 301             return 1;
 302         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 303         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 304         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 305         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 306         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 307         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 308         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 309         case PIPE_SHADER_CAP_SUBROUTINES:
 310         case PIPE_SHADER_CAP_INTEGERS:
 311         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 312         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 313             return 0;
 314         case PIPE_SHADER_CAP_PREFERRED_IR:
 315             return PIPE_SHADER_IR_TGSI;
 316         }
 317         break;
 318     }
 319     return 0;
 320 }
 321
 322 static float r300_get_paramf(struct pipe_screen* pscreen,
 323                              enum pipe_capf param)
 324 {
 325     struct r300_screen* r300screen = r300_screen(pscreen);
 326
 327     switch (param) {
 328         case PIPE_CAPF_MAX_LINE_WIDTH:
 329         case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 330         case PIPE_CAPF_MAX_POINT_WIDTH:
 331         case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 332             /* The maximum dimensions of the colorbuffer are our practical
 333              * rendering limits. 2048 pixels should be enough for anybody. */
 334             if (r300screen->caps.is_r500) {
 335                 return 4096.0f;
 336             } else if (r300screen->caps.is_r400) {
 337                 return 4021.0f;
 338             } else {
 339                 return 2560.0f;
 340             }
 341         case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 342             return 16.0f;
 343         case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 344             return 16.0f;
 345         case PIPE_CAPF_GUARD_BAND_LEFT:
 346         case PIPE_CAPF_GUARD_BAND_TOP:
 347         case PIPE_CAPF_GUARD_BAND_RIGHT:
 348         case PIPE_CAPF_GUARD_BAND_BOTTOM:
 349             /* XXX I don't know what these should be but the least we can do is
 350              * silence the potential error message */
 351             return 0.0f;
 352         default:
 353             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 354                          param);
 355             return 0.0f;
 356     }
 357 }
 358
 359 static int r300_get_video_param(struct pipe_screen *screen,
 360                                 enum pipe_video_profile profile,
 361                                 enum pipe_video_entrypoint entrypoint,
 362                                 enum pipe_video_cap param)
 363 {
 364    switch (param) {
 365       case PIPE_VIDEO_CAP_SUPPORTED:
 366          return vl_profile_supported(screen, profile, entrypoint);
 367       case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 368          return 0;
 369       case PIPE_VIDEO_CAP_MAX_WIDTH:
 370       case PIPE_VIDEO_CAP_MAX_HEIGHT:
 371          return vl_video_buffer_max_size(screen);
 372       case PIPE_VIDEO_CAP_PREFERED_FORMAT:
 373          return PIPE_FORMAT_NV12;
 374       case PIPE_VIDEO_CAP_PREFERS_INTERLACED:
 375          return false;
 376       case PIPE_VIDEO_CAP_SUPPORTS_INTERLACED:
 377          return false;
 378       case PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE:
 379          return true;
 380       case PIPE_VIDEO_CAP_MAX_LEVEL:
 381          return vl_level_supported(screen, profile);
 382       default:
 383          return 0;
 384    }
 385 }
 386
 387 /**
 388  * Whether the format matches:
 389  *   PIPE_FORMAT_?10?10?10?2_UNORM
 390  */
 391 static INLINE boolean
 392 util_format_is_rgba1010102_variant(const struct util_format_description *desc)
 393 {
 394    static const unsigned size[4] = {10, 10, 10, 2};
 395    unsigned chan;
 396
 397    if (desc->block.width != 1 ||
 398        desc->block.height != 1 ||
 399        desc->block.bits != 32)
 400       return FALSE;
 401
 402    for (chan = 0; chan < 4; ++chan) {
 403       if(desc->channel[chan].type != UTIL_FORMAT_TYPE_UNSIGNED &&
 404          desc->channel[chan].type != UTIL_FORMAT_TYPE_VOID)
 405          return FALSE;
 406       if (desc->channel[chan].size != size[chan])
 407          return FALSE;
 408    }
 409
 410    return TRUE;
 411 }
 412
 413 static boolean r300_is_format_supported(struct pipe_screen* screen,
 414                                         enum pipe_format format,
 415                                         enum pipe_texture_target target,
 416                                         unsigned sample_count,
 417                                         unsigned usage)
 418 {
 419     uint32_t retval = 0;
 420     boolean drm_2_8_0 = r300_screen(screen)->info.drm_minor >= 8;
 421     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 422     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 423     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 424                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 425                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 426                               format == PIPE_FORMAT_B10G10R10X2_UNORM ||
 427                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 428     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 429                        format == PIPE_FORMAT_RGTC1_SNORM ||
 430                        format == PIPE_FORMAT_LATC1_UNORM ||
 431                        format == PIPE_FORMAT_LATC1_SNORM;
 432     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 433                        format == PIPE_FORMAT_RGTC2_SNORM ||
 434                        format == PIPE_FORMAT_LATC2_UNORM ||
 435                        format == PIPE_FORMAT_LATC2_SNORM;
 436     boolean is_x16f_xy16f = format == PIPE_FORMAT_R16_FLOAT ||
 437                             format == PIPE_FORMAT_R16G16_FLOAT ||
 438                             format == PIPE_FORMAT_A16_FLOAT ||
 439                             format == PIPE_FORMAT_L16_FLOAT ||
 440                             format == PIPE_FORMAT_L16A16_FLOAT ||
 441                             format == PIPE_FORMAT_R16A16_FLOAT ||
 442                             format == PIPE_FORMAT_I16_FLOAT;
 443     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 444                             format == PIPE_FORMAT_R16G16_FLOAT ||
 445                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 446                             format == PIPE_FORMAT_R16G16B16A16_FLOAT ||
 447                             format == PIPE_FORMAT_R16G16B16X16_FLOAT;
 448     const struct util_format_description *desc;
 449
 450     if (!util_format_is_supported(format, usage))
 451        return FALSE;
 452
 453     /* Check multisampling support. */
 454     switch (sample_count) {
 455         case 0:
 456         case 1:
 457             break;
 458         case 2:
 459         case 4:
 460         case 6:
 461             /* We need DRM 2.8.0. */
 462             if (!drm_2_8_0) {
 463                 return FALSE;
 464             }
 465             /* No texturing and scanout. */
 466             if (usage & (PIPE_BIND_SAMPLER_VIEW |
 467                          PIPE_BIND_DISPLAY_TARGET |
 468                          PIPE_BIND_SCANOUT)) {
 469                 return FALSE;
 470             }
 471
 472             desc = util_format_description(format);
 473
 474             if (is_r500) {
 475                 /* Only allow depth/stencil, RGBA8, RGBA1010102, RGBA16F. */
 476                 if (!util_format_is_depth_or_stencil(format) &&
 477                     !util_format_is_rgba8_variant(desc) &&
 478                     !util_format_is_rgba1010102_variant(desc) &&
 479                     format != PIPE_FORMAT_R16G16B16A16_FLOAT &&
 480                     format != PIPE_FORMAT_R16G16B16X16_FLOAT) {
 481                     return FALSE;
 482                 }
 483             } else {
 484                 /* Only allow depth/stencil, RGBA8. */
 485                 if (!util_format_is_depth_or_stencil(format) &&
 486                     !util_format_is_rgba8_variant(desc)) {
 487                     return FALSE;
 488                 }
 489             }
 490             break;
 491         default:
 492             return FALSE;
 493     }
 494
 495     /* Check sampler format support. */
 496     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 497         /* these two are broken for an unknown reason */
 498         format != PIPE_FORMAT_R8G8B8X8_SNORM &&
 499         format != PIPE_FORMAT_R16G16B16X16_SNORM &&
 500         /* ATI1N is r5xx-only. */
 501         (is_r500 || !is_ati1n) &&
 502         /* ATI2N is supported on r4xx-r5xx. */
 503         (is_r400 || is_r500 || !is_ati2n) &&
 504         /* R16F and RG16F texture support was added in as late as DRM 2.8.0 */
 505         (drm_2_8_0 || !is_x16f_xy16f) &&
 506         r300_is_sampler_format_supported(format)) {
 507         retval |= PIPE_BIND_SAMPLER_VIEW;
 508     }
 509
 510     /* Check colorbuffer format support. */
 511     if ((usage & (PIPE_BIND_RENDER_TARGET |
 512                   PIPE_BIND_DISPLAY_TARGET |
 513                   PIPE_BIND_SCANOUT |
 514                   PIPE_BIND_SHARED)) &&
 515         /* 2101010 cannot be rendered to on non-r5xx. */
 516         (!is_color2101010 || (is_r500 && drm_2_8_0)) &&
 517         r300_is_colorbuffer_format_supported(format)) {
 518         retval |= usage &
 519             (PIPE_BIND_RENDER_TARGET |
 520              PIPE_BIND_DISPLAY_TARGET |
 521              PIPE_BIND_SCANOUT |
 522              PIPE_BIND_SHARED);
 523     }
 524
 525     /* Check depth-stencil format support. */
 526     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 527         r300_is_zs_format_supported(format)) {
 528         retval |= PIPE_BIND_DEPTH_STENCIL;
 529     }
 530
 531     /* Check vertex buffer format support. */
 532     if (usage & PIPE_BIND_VERTEX_BUFFER) {
 533         if (r300_screen(screen)->caps.has_tcl) {
 534             /* Half float is supported on >= R400. */
 535             if ((is_r400 || is_r500 || !is_half_float) &&
 536                 r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
 537                 retval |= PIPE_BIND_VERTEX_BUFFER;
 538             }
 539         } else {
 540             /* SW TCL */
 541             if (!util_format_is_pure_integer(format)) {
 542                 retval |= PIPE_BIND_VERTEX_BUFFER;
 543             }
 544         }
 545     }
 546
 547     /* Transfers are always supported. */
 548     if (usage & PIPE_BIND_TRANSFER_READ)
 549         retval |= PIPE_BIND_TRANSFER_READ;
 550     if (usage & PIPE_BIND_TRANSFER_WRITE)
 551         retval |= PIPE_BIND_TRANSFER_WRITE;
 552
 553     return retval == usage;
 554 }
 555
 556 static void r300_destroy_screen(struct pipe_screen* pscreen)
 557 {
 558     struct r300_screen* r300screen = r300_screen(pscreen);
 559     struct radeon_winsys *rws = radeon_winsys(pscreen);
 560
 561     if (rws && !rws->unref(rws))
 562       return;
 563
 564     pipe_mutex_destroy(r300screen->cmask_mutex);
 565
 566     if (rws)
 567       rws->destroy(rws);
 568
 569     FREE(r300screen);
 570 }
 571
 572 static void r300_fence_reference(struct pipe_screen *screen,
 573                                  struct pipe_fence_handle **ptr,
 574                                  struct pipe_fence_handle *fence)
 575 {
 576     struct radeon_winsys *rws = r300_screen(screen)->rws;
 577
 578     rws->fence_reference(ptr, fence);
 579 }
 580
 581 static boolean r300_fence_signalled(struct pipe_screen *screen,
 582                                     struct pipe_fence_handle *fence)
 583 {
 584     struct radeon_winsys *rws = r300_screen(screen)->rws;
 585
 586     return rws->fence_wait(rws, fence, 0);
 587 }
 588
 589 static boolean r300_fence_finish(struct pipe_screen *screen,
 590                                  struct pipe_fence_handle *fence,
 591                                  uint64_t timeout)
 592 {
 593     struct radeon_winsys *rws = r300_screen(screen)->rws;
 594
 595     return rws->fence_wait(rws, fence, timeout);
 596 }
 597
 598 struct pipe_screen* r300_screen_create(struct radeon_winsys *rws)
 599 {
 600     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 601
 602     if (!r300screen) {
 603         FREE(r300screen);
 604         return NULL;
 605     }
 606
 607     rws->query_info(rws, &r300screen->info);
 608
 609     r300_init_debug(r300screen);
 610     r300_parse_chipset(r300screen->info.pci_id, &r300screen->caps);
 611
 612     if (SCREEN_DBG_ON(r300screen, DBG_NO_ZMASK))
 613         r300screen->caps.zmask_ram = 0;
 614     if (SCREEN_DBG_ON(r300screen, DBG_NO_HIZ))
 615         r300screen->caps.hiz_ram = 0;
 616
 617     if (r300screen->info.drm_minor < 8)
 618         r300screen->caps.has_us_format = FALSE;
 619
 620     r300screen->rws = rws;
 621     r300screen->screen.destroy = r300_destroy_screen;
 622     r300screen->screen.get_name = r300_get_name;
 623     r300screen->screen.get_vendor = r300_get_vendor;
 624     r300screen->screen.get_param = r300_get_param;
 625     r300screen->screen.get_shader_param = r300_get_shader_param;
 626     r300screen->screen.get_paramf = r300_get_paramf;
 627     r300screen->screen.get_video_param = r300_get_video_param;
 628     r300screen->screen.is_format_supported = r300_is_format_supported;
 629     r300screen->screen.is_video_format_supported = vl_video_buffer_is_format_supported;
 630     r300screen->screen.context_create = r300_create_context;
 631     r300screen->screen.fence_reference = r300_fence_reference;
 632     r300screen->screen.fence_signalled = r300_fence_signalled;
 633     r300screen->screen.fence_finish = r300_fence_finish;
 634
 635     r300_init_screen_resource_functions(r300screen);
 636
 637     util_format_s3tc_init();
 638     pipe_mutex_init(r300screen->cmask_mutex);
 639
 640     return &r300screen->screen;
 641 }