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_MAX_VERTEX_STREAMS:
 160         case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 161         case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 162         case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 163         case PIPE_CAP_COMPUTE:
 164         case PIPE_CAP_START_INSTANCE:
 165         case PIPE_CAP_QUERY_TIMESTAMP:
 166         case PIPE_CAP_TEXTURE_MULTISAMPLE:
 167         case PIPE_CAP_CUBE_MAP_ARRAY:
 168         case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 169         case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 170         case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 171         case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 172         case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 173         case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 174         case PIPE_CAP_TEXTURE_GATHER_SM5:
 175         case PIPE_CAP_TEXTURE_QUERY_LOD:
 176         case PIPE_CAP_FAKE_SW_MSAA:
 177         case PIPE_CAP_SAMPLE_SHADING:
 178         case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 179         case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 180         case PIPE_CAP_DRAW_INDIRECT:
 181         case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 182         case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 183             return 0;
 184
 185         /* SWTCL-only features. */
 186         case PIPE_CAP_PRIMITIVE_RESTART:
 187         case PIPE_CAP_USER_VERTEX_BUFFERS:
 188             return !r300screen->caps.has_tcl;
 189
 190         /* HWTCL-only features / limitations. */
 191         case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 192         case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 193         case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 194             return r300screen->caps.has_tcl;
 195         case PIPE_CAP_TGSI_TEXCOORD:
 196             return 0;
 197
 198         /* Texturing. */
 199         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 200         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 201         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 202             /* 13 == 4096, 12 == 2048 */
 203             return is_r500 ? 13 : 12;
 204
 205         /* Render targets. */
 206         case PIPE_CAP_MAX_RENDER_TARGETS:
 207             return 4;
 208         case PIPE_CAP_ENDIANNESS:
 209             return PIPE_ENDIAN_LITTLE;
 210
 211         case PIPE_CAP_MAX_VIEWPORTS:
 212             return 1;
 213
 214         case PIPE_CAP_VENDOR_ID:
 215                 return 0x1002;
 216         case PIPE_CAP_DEVICE_ID:
 217                 return r300screen->info.pci_id;
 218         case PIPE_CAP_ACCELERATED:
 219                 return 1;
 220         case PIPE_CAP_VIDEO_MEMORY:
 221                 return r300screen->info.vram_size >> 20;
 222         case PIPE_CAP_UMA:
 223                 return 0;
 224     }
 225     return 0;
 226 }
 227
 228 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 229 {
 230    struct r300_screen* r300screen = r300_screen(pscreen);
 231    boolean is_r400 = r300screen->caps.is_r400;
 232    boolean is_r500 = r300screen->caps.is_r500;
 233
 234    switch (shader) {
 235     case PIPE_SHADER_FRAGMENT:
 236         switch (param)
 237         {
 238         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 239             return is_r500 || is_r400 ? 512 : 96;
 240         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 241             return is_r500 || is_r400 ? 512 : 64;
 242         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 243             return is_r500 || is_r400 ? 512 : 32;
 244         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 245             return is_r500 ? 511 : 4;
 246         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 247             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 248             /* Fragment shader limits. */
 249         case PIPE_SHADER_CAP_MAX_INPUTS:
 250             /* 2 colors + 8 texcoords are always supported
 251              * (minus fog and wpos).
 252              *
 253              * R500 has the ability to turn 3rd and 4th color into
 254              * additional texcoords but there is no two-sided color
 255              * selection then. However the facing bit can be used instead. */
 256             return 10;
 257         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 258             return (is_r500 ? 256 : 32) * sizeof(float[4]);
 259         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 260             return 1;
 261         case PIPE_SHADER_CAP_MAX_TEMPS:
 262             return is_r500 ? 128 : is_r400 ? 64 : 32;
 263         case PIPE_SHADER_CAP_MAX_PREDS:
 264             return is_r500 ? 1 : 0;
 265         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 266         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 267            return r300screen->caps.num_tex_units;
 268         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 269         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 270         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 271         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 272         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 273         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 274         case PIPE_SHADER_CAP_SUBROUTINES:
 275         case PIPE_SHADER_CAP_INTEGERS:
 276         case PIPE_SHADER_CAP_DOUBLES:
 277             return 0;
 278         case PIPE_SHADER_CAP_PREFERRED_IR:
 279             return PIPE_SHADER_IR_TGSI;
 280         }
 281         break;
 282     case PIPE_SHADER_VERTEX:
 283         switch (param)
 284         {
 285         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 286         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 287         case PIPE_SHADER_CAP_SUBROUTINES:
 288             return 0;
 289         default:;
 290         }
 291
 292         if (!r300screen->caps.has_tcl) {
 293             return draw_get_shader_param(shader, param);
 294         }
 295
 296         switch (param)
 297         {
 298         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 299         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 300             return is_r500 ? 1024 : 256;
 301         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 302             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 303         case PIPE_SHADER_CAP_MAX_INPUTS:
 304             return 16;
 305         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 306             return 256 * sizeof(float[4]);
 307         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 308             return 1;
 309         case PIPE_SHADER_CAP_MAX_TEMPS:
 310             return 32;
 311         case PIPE_SHADER_CAP_MAX_PREDS:
 312             return is_r500 ? 4 : 0; /* XXX guessed. */
 313         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 314             return 1;
 315         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 316         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 317         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 318         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 319         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 320         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 321         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 322         case PIPE_SHADER_CAP_SUBROUTINES:
 323         case PIPE_SHADER_CAP_INTEGERS:
 324         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 325         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 326         case PIPE_SHADER_CAP_DOUBLES:
 327             return 0;
 328         case PIPE_SHADER_CAP_PREFERRED_IR:
 329             return PIPE_SHADER_IR_TGSI;
 330         }
 331         break;
 332     }
 333     return 0;
 334 }
 335
 336 static float r300_get_paramf(struct pipe_screen* pscreen,
 337                              enum pipe_capf param)
 338 {
 339     struct r300_screen* r300screen = r300_screen(pscreen);
 340
 341     switch (param) {
 342         case PIPE_CAPF_MAX_LINE_WIDTH:
 343         case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 344         case PIPE_CAPF_MAX_POINT_WIDTH:
 345         case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 346             /* The maximum dimensions of the colorbuffer are our practical
 347              * rendering limits. 2048 pixels should be enough for anybody. */
 348             if (r300screen->caps.is_r500) {
 349                 return 4096.0f;
 350             } else if (r300screen->caps.is_r400) {
 351                 return 4021.0f;
 352             } else {
 353                 return 2560.0f;
 354             }
 355         case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 356             return 16.0f;
 357         case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 358             return 16.0f;
 359         case PIPE_CAPF_GUARD_BAND_LEFT:
 360         case PIPE_CAPF_GUARD_BAND_TOP:
 361         case PIPE_CAPF_GUARD_BAND_RIGHT:
 362         case PIPE_CAPF_GUARD_BAND_BOTTOM:
 363             /* XXX I don't know what these should be but the least we can do is
 364              * silence the potential error message */
 365             return 0.0f;
 366         default:
 367             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 368                          param);
 369             return 0.0f;
 370     }
 371 }
 372
 373 static int r300_get_video_param(struct pipe_screen *screen,
 374                                 enum pipe_video_profile profile,
 375                                 enum pipe_video_entrypoint entrypoint,
 376                                 enum pipe_video_cap param)
 377 {
 378    switch (param) {
 379       case PIPE_VIDEO_CAP_SUPPORTED:
 380          return vl_profile_supported(screen, profile, entrypoint);
 381       case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 382          return 0;
 383       case PIPE_VIDEO_CAP_MAX_WIDTH:
 384       case PIPE_VIDEO_CAP_MAX_HEIGHT:
 385          return vl_video_buffer_max_size(screen);
 386       case PIPE_VIDEO_CAP_PREFERED_FORMAT:
 387          return PIPE_FORMAT_NV12;
 388       case PIPE_VIDEO_CAP_PREFERS_INTERLACED:
 389          return false;
 390       case PIPE_VIDEO_CAP_SUPPORTS_INTERLACED:
 391          return false;
 392       case PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE:
 393          return true;
 394       case PIPE_VIDEO_CAP_MAX_LEVEL:
 395          return vl_level_supported(screen, profile);
 396       default:
 397          return 0;
 398    }
 399 }
 400
 401 /**
 402  * Whether the format matches:
 403  *   PIPE_FORMAT_?10?10?10?2_UNORM
 404  */
 405 static INLINE boolean
 406 util_format_is_rgba1010102_variant(const struct util_format_description *desc)
 407 {
 408    static const unsigned size[4] = {10, 10, 10, 2};
 409    unsigned chan;
 410
 411    if (desc->block.width != 1 ||
 412        desc->block.height != 1 ||
 413        desc->block.bits != 32)
 414       return FALSE;
 415
 416    for (chan = 0; chan < 4; ++chan) {
 417       if(desc->channel[chan].type != UTIL_FORMAT_TYPE_UNSIGNED &&
 418          desc->channel[chan].type != UTIL_FORMAT_TYPE_VOID)
 419          return FALSE;
 420       if (desc->channel[chan].size != size[chan])
 421          return FALSE;
 422    }
 423
 424    return TRUE;
 425 }
 426
 427 static boolean r300_is_format_supported(struct pipe_screen* screen,
 428                                         enum pipe_format format,
 429                                         enum pipe_texture_target target,
 430                                         unsigned sample_count,
 431                                         unsigned usage)
 432 {
 433     uint32_t retval = 0;
 434     boolean drm_2_8_0 = r300_screen(screen)->info.drm_minor >= 8;
 435     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 436     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 437     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 438                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 439                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 440                               format == PIPE_FORMAT_B10G10R10X2_UNORM ||
 441                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 442     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 443                        format == PIPE_FORMAT_RGTC1_SNORM ||
 444                        format == PIPE_FORMAT_LATC1_UNORM ||
 445                        format == PIPE_FORMAT_LATC1_SNORM;
 446     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 447                        format == PIPE_FORMAT_RGTC2_SNORM ||
 448                        format == PIPE_FORMAT_LATC2_UNORM ||
 449                        format == PIPE_FORMAT_LATC2_SNORM;
 450     boolean is_x16f_xy16f = format == PIPE_FORMAT_R16_FLOAT ||
 451                             format == PIPE_FORMAT_R16G16_FLOAT ||
 452                             format == PIPE_FORMAT_A16_FLOAT ||
 453                             format == PIPE_FORMAT_L16_FLOAT ||
 454                             format == PIPE_FORMAT_L16A16_FLOAT ||
 455                             format == PIPE_FORMAT_R16A16_FLOAT ||
 456                             format == PIPE_FORMAT_I16_FLOAT;
 457     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 458                             format == PIPE_FORMAT_R16G16_FLOAT ||
 459                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 460                             format == PIPE_FORMAT_R16G16B16A16_FLOAT ||
 461                             format == PIPE_FORMAT_R16G16B16X16_FLOAT;
 462     const struct util_format_description *desc;
 463
 464     if (!util_format_is_supported(format, usage))
 465        return FALSE;
 466
 467     /* Check multisampling support. */
 468     switch (sample_count) {
 469         case 0:
 470         case 1:
 471             break;
 472         case 2:
 473         case 4:
 474         case 6:
 475             /* We need DRM 2.8.0. */
 476             if (!drm_2_8_0) {
 477                 return FALSE;
 478             }
 479             /* No texturing and scanout. */
 480             if (usage & (PIPE_BIND_SAMPLER_VIEW |
 481                          PIPE_BIND_DISPLAY_TARGET |
 482                          PIPE_BIND_SCANOUT)) {
 483                 return FALSE;
 484             }
 485
 486             desc = util_format_description(format);
 487
 488             if (is_r500) {
 489                 /* Only allow depth/stencil, RGBA8, RGBA1010102, RGBA16F. */
 490                 if (!util_format_is_depth_or_stencil(format) &&
 491                     !util_format_is_rgba8_variant(desc) &&
 492                     !util_format_is_rgba1010102_variant(desc) &&
 493                     format != PIPE_FORMAT_R16G16B16A16_FLOAT &&
 494                     format != PIPE_FORMAT_R16G16B16X16_FLOAT) {
 495                     return FALSE;
 496                 }
 497             } else {
 498                 /* Only allow depth/stencil, RGBA8. */
 499                 if (!util_format_is_depth_or_stencil(format) &&
 500                     !util_format_is_rgba8_variant(desc)) {
 501                     return FALSE;
 502                 }
 503             }
 504             break;
 505         default:
 506             return FALSE;
 507     }
 508
 509     /* Check sampler format support. */
 510     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 511         /* these two are broken for an unknown reason */
 512         format != PIPE_FORMAT_R8G8B8X8_SNORM &&
 513         format != PIPE_FORMAT_R16G16B16X16_SNORM &&
 514         /* ATI1N is r5xx-only. */
 515         (is_r500 || !is_ati1n) &&
 516         /* ATI2N is supported on r4xx-r5xx. */
 517         (is_r400 || is_r500 || !is_ati2n) &&
 518         /* R16F and RG16F texture support was added in as late as DRM 2.8.0 */
 519         (drm_2_8_0 || !is_x16f_xy16f) &&
 520         r300_is_sampler_format_supported(format)) {
 521         retval |= PIPE_BIND_SAMPLER_VIEW;
 522     }
 523
 524     /* Check colorbuffer format support. */
 525     if ((usage & (PIPE_BIND_RENDER_TARGET |
 526                   PIPE_BIND_DISPLAY_TARGET |
 527                   PIPE_BIND_SCANOUT |
 528                   PIPE_BIND_SHARED)) &&
 529         /* 2101010 cannot be rendered to on non-r5xx. */
 530         (!is_color2101010 || (is_r500 && drm_2_8_0)) &&
 531         r300_is_colorbuffer_format_supported(format)) {
 532         retval |= usage &
 533             (PIPE_BIND_RENDER_TARGET |
 534              PIPE_BIND_DISPLAY_TARGET |
 535              PIPE_BIND_SCANOUT |
 536              PIPE_BIND_SHARED);
 537     }
 538
 539     /* Check depth-stencil format support. */
 540     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 541         r300_is_zs_format_supported(format)) {
 542         retval |= PIPE_BIND_DEPTH_STENCIL;
 543     }
 544
 545     /* Check vertex buffer format support. */
 546     if (usage & PIPE_BIND_VERTEX_BUFFER) {
 547         if (r300_screen(screen)->caps.has_tcl) {
 548             /* Half float is supported on >= R400. */
 549             if ((is_r400 || is_r500 || !is_half_float) &&
 550                 r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
 551                 retval |= PIPE_BIND_VERTEX_BUFFER;
 552             }
 553         } else {
 554             /* SW TCL */
 555             if (!util_format_is_pure_integer(format)) {
 556                 retval |= PIPE_BIND_VERTEX_BUFFER;
 557             }
 558         }
 559     }
 560
 561     /* Transfers are always supported. */
 562     if (usage & PIPE_BIND_TRANSFER_READ)
 563         retval |= PIPE_BIND_TRANSFER_READ;
 564     if (usage & PIPE_BIND_TRANSFER_WRITE)
 565         retval |= PIPE_BIND_TRANSFER_WRITE;
 566
 567     return retval == usage;
 568 }
 569
 570 static void r300_destroy_screen(struct pipe_screen* pscreen)
 571 {
 572     struct r300_screen* r300screen = r300_screen(pscreen);
 573     struct radeon_winsys *rws = radeon_winsys(pscreen);
 574
 575     if (rws && !rws->unref(rws))
 576       return;
 577
 578     pipe_mutex_destroy(r300screen->cmask_mutex);
 579
 580     if (rws)
 581       rws->destroy(rws);
 582
 583     FREE(r300screen);
 584 }
 585
 586 static void r300_fence_reference(struct pipe_screen *screen,
 587                                  struct pipe_fence_handle **ptr,
 588                                  struct pipe_fence_handle *fence)
 589 {
 590     struct radeon_winsys *rws = r300_screen(screen)->rws;
 591
 592     rws->fence_reference(ptr, fence);
 593 }
 594
 595 static boolean r300_fence_signalled(struct pipe_screen *screen,
 596                                     struct pipe_fence_handle *fence)
 597 {
 598     struct radeon_winsys *rws = r300_screen(screen)->rws;
 599
 600     return rws->fence_wait(rws, fence, 0);
 601 }
 602
 603 static boolean r300_fence_finish(struct pipe_screen *screen,
 604                                  struct pipe_fence_handle *fence,
 605                                  uint64_t timeout)
 606 {
 607     struct radeon_winsys *rws = r300_screen(screen)->rws;
 608
 609     return rws->fence_wait(rws, fence, timeout);
 610 }
 611
 612 struct pipe_screen* r300_screen_create(struct radeon_winsys *rws)
 613 {
 614     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 615
 616     if (!r300screen) {
 617         FREE(r300screen);
 618         return NULL;
 619     }
 620
 621     rws->query_info(rws, &r300screen->info);
 622
 623     r300_init_debug(r300screen);
 624     r300_parse_chipset(r300screen->info.pci_id, &r300screen->caps);
 625
 626     if (SCREEN_DBG_ON(r300screen, DBG_NO_ZMASK))
 627         r300screen->caps.zmask_ram = 0;
 628     if (SCREEN_DBG_ON(r300screen, DBG_NO_HIZ))
 629         r300screen->caps.hiz_ram = 0;
 630
 631     if (r300screen->info.drm_minor < 8)
 632         r300screen->caps.has_us_format = FALSE;
 633
 634     r300screen->rws = rws;
 635     r300screen->screen.destroy = r300_destroy_screen;
 636     r300screen->screen.get_name = r300_get_name;
 637     r300screen->screen.get_vendor = r300_get_vendor;
 638     r300screen->screen.get_param = r300_get_param;
 639     r300screen->screen.get_shader_param = r300_get_shader_param;
 640     r300screen->screen.get_paramf = r300_get_paramf;
 641     r300screen->screen.get_video_param = r300_get_video_param;
 642     r300screen->screen.is_format_supported = r300_is_format_supported;
 643     r300screen->screen.is_video_format_supported = vl_video_buffer_is_format_supported;
 644     r300screen->screen.context_create = r300_create_context;
 645     r300screen->screen.fence_reference = r300_fence_reference;
 646     r300screen->screen.fence_signalled = r300_fence_signalled;
 647     r300screen->screen.fence_finish = r300_fence_finish;
 648
 649     r300_init_screen_resource_functions(r300screen);
 650
 651     util_format_s3tc_init();
 652     pipe_mutex_init(r300screen->cmask_mutex);
 653
 654     return &r300screen->screen;
 655 }