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