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         case PIPE_CAP_SAMPLER_VIEW_TARGET:
 184             return 0;
 185
 186         /* SWTCL-only features. */
 187         case PIPE_CAP_PRIMITIVE_RESTART:
 188         case PIPE_CAP_USER_VERTEX_BUFFERS:
 189             return !r300screen->caps.has_tcl;
 190
 191         /* HWTCL-only features / limitations. */
 192         case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 193         case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 194         case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 195             return r300screen->caps.has_tcl;
 196         case PIPE_CAP_TGSI_TEXCOORD:
 197             return 0;
 198
 199         /* Texturing. */
 200         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 201         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 202         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 203             /* 13 == 4096, 12 == 2048 */
 204             return is_r500 ? 13 : 12;
 205
 206         /* Render targets. */
 207         case PIPE_CAP_MAX_RENDER_TARGETS:
 208             return 4;
 209         case PIPE_CAP_ENDIANNESS:
 210             return PIPE_ENDIAN_LITTLE;
 211
 212         case PIPE_CAP_MAX_VIEWPORTS:
 213             return 1;
 214
 215         case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 216             return 2048;
 217
 218         case PIPE_CAP_VENDOR_ID:
 219                 return 0x1002;
 220         case PIPE_CAP_DEVICE_ID:
 221                 return r300screen->info.pci_id;
 222         case PIPE_CAP_ACCELERATED:
 223                 return 1;
 224         case PIPE_CAP_VIDEO_MEMORY:
 225                 return r300screen->info.vram_size >> 20;
 226         case PIPE_CAP_UMA:
 227                 return 0;
 228     }
 229     return 0;
 230 }
 231
 232 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 233 {
 234    struct r300_screen* r300screen = r300_screen(pscreen);
 235    boolean is_r400 = r300screen->caps.is_r400;
 236    boolean is_r500 = r300screen->caps.is_r500;
 237
 238    switch (shader) {
 239     case PIPE_SHADER_FRAGMENT:
 240         switch (param)
 241         {
 242         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 243             return is_r500 || is_r400 ? 512 : 96;
 244         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 245             return is_r500 || is_r400 ? 512 : 64;
 246         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 247             return is_r500 || is_r400 ? 512 : 32;
 248         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 249             return is_r500 ? 511 : 4;
 250         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 251             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 252             /* Fragment shader limits. */
 253         case PIPE_SHADER_CAP_MAX_INPUTS:
 254             /* 2 colors + 8 texcoords are always supported
 255              * (minus fog and wpos).
 256              *
 257              * R500 has the ability to turn 3rd and 4th color into
 258              * additional texcoords but there is no two-sided color
 259              * selection then. However the facing bit can be used instead. */
 260             return 10;
 261         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 262             return (is_r500 ? 256 : 32) * sizeof(float[4]);
 263         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 264             return 1;
 265         case PIPE_SHADER_CAP_MAX_TEMPS:
 266             return is_r500 ? 128 : is_r400 ? 64 : 32;
 267         case PIPE_SHADER_CAP_MAX_PREDS:
 268             return is_r500 ? 1 : 0;
 269         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 270         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 271            return r300screen->caps.num_tex_units;
 272         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 273         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 274         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 275         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 276         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 277         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 278         case PIPE_SHADER_CAP_SUBROUTINES:
 279         case PIPE_SHADER_CAP_INTEGERS:
 280         case PIPE_SHADER_CAP_DOUBLES:
 281             return 0;
 282         case PIPE_SHADER_CAP_PREFERRED_IR:
 283             return PIPE_SHADER_IR_TGSI;
 284         }
 285         break;
 286     case PIPE_SHADER_VERTEX:
 287         switch (param)
 288         {
 289         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 290         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 291         case PIPE_SHADER_CAP_SUBROUTINES:
 292             return 0;
 293         default:;
 294         }
 295
 296         if (!r300screen->caps.has_tcl) {
 297             return draw_get_shader_param(shader, param);
 298         }
 299
 300         switch (param)
 301         {
 302         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 303         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 304             return is_r500 ? 1024 : 256;
 305         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 306             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 307         case PIPE_SHADER_CAP_MAX_INPUTS:
 308             return 16;
 309         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 310             return 256 * sizeof(float[4]);
 311         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 312             return 1;
 313         case PIPE_SHADER_CAP_MAX_TEMPS:
 314             return 32;
 315         case PIPE_SHADER_CAP_MAX_PREDS:
 316             return is_r500 ? 4 : 0; /* XXX guessed. */
 317         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 318             return 1;
 319         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 320         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 321         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 322         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 323         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 324         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 325         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 326         case PIPE_SHADER_CAP_SUBROUTINES:
 327         case PIPE_SHADER_CAP_INTEGERS:
 328         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 329         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 330         case PIPE_SHADER_CAP_DOUBLES:
 331             return 0;
 332         case PIPE_SHADER_CAP_PREFERRED_IR:
 333             return PIPE_SHADER_IR_TGSI;
 334         }
 335         break;
 336     }
 337     return 0;
 338 }
 339
 340 static float r300_get_paramf(struct pipe_screen* pscreen,
 341                              enum pipe_capf param)
 342 {
 343     struct r300_screen* r300screen = r300_screen(pscreen);
 344
 345     switch (param) {
 346         case PIPE_CAPF_MAX_LINE_WIDTH:
 347         case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 348         case PIPE_CAPF_MAX_POINT_WIDTH:
 349         case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 350             /* The maximum dimensions of the colorbuffer are our practical
 351              * rendering limits. 2048 pixels should be enough for anybody. */
 352             if (r300screen->caps.is_r500) {
 353                 return 4096.0f;
 354             } else if (r300screen->caps.is_r400) {
 355                 return 4021.0f;
 356             } else {
 357                 return 2560.0f;
 358             }
 359         case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 360             return 16.0f;
 361         case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 362             return 16.0f;
 363         case PIPE_CAPF_GUARD_BAND_LEFT:
 364         case PIPE_CAPF_GUARD_BAND_TOP:
 365         case PIPE_CAPF_GUARD_BAND_RIGHT:
 366         case PIPE_CAPF_GUARD_BAND_BOTTOM:
 367             /* XXX I don't know what these should be but the least we can do is
 368              * silence the potential error message */
 369             return 0.0f;
 370         default:
 371             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 372                          param);
 373             return 0.0f;
 374     }
 375 }
 376
 377 static int r300_get_video_param(struct pipe_screen *screen,
 378                                 enum pipe_video_profile profile,
 379                                 enum pipe_video_entrypoint entrypoint,
 380                                 enum pipe_video_cap param)
 381 {
 382    switch (param) {
 383       case PIPE_VIDEO_CAP_SUPPORTED:
 384          return vl_profile_supported(screen, profile, entrypoint);
 385       case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 386          return 0;
 387       case PIPE_VIDEO_CAP_MAX_WIDTH:
 388       case PIPE_VIDEO_CAP_MAX_HEIGHT:
 389          return vl_video_buffer_max_size(screen);
 390       case PIPE_VIDEO_CAP_PREFERED_FORMAT:
 391          return PIPE_FORMAT_NV12;
 392       case PIPE_VIDEO_CAP_PREFERS_INTERLACED:
 393          return false;
 394       case PIPE_VIDEO_CAP_SUPPORTS_INTERLACED:
 395          return false;
 396       case PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE:
 397          return true;
 398       case PIPE_VIDEO_CAP_MAX_LEVEL:
 399          return vl_level_supported(screen, profile);
 400       default:
 401          return 0;
 402    }
 403 }
 404
 405 /**
 406  * Whether the format matches:
 407  *   PIPE_FORMAT_?10?10?10?2_UNORM
 408  */
 409 static INLINE boolean
 410 util_format_is_rgba1010102_variant(const struct util_format_description *desc)
 411 {
 412    static const unsigned size[4] = {10, 10, 10, 2};
 413    unsigned chan;
 414
 415    if (desc->block.width != 1 ||
 416        desc->block.height != 1 ||
 417        desc->block.bits != 32)
 418       return FALSE;
 419
 420    for (chan = 0; chan < 4; ++chan) {
 421       if(desc->channel[chan].type != UTIL_FORMAT_TYPE_UNSIGNED &&
 422          desc->channel[chan].type != UTIL_FORMAT_TYPE_VOID)
 423          return FALSE;
 424       if (desc->channel[chan].size != size[chan])
 425          return FALSE;
 426    }
 427
 428    return TRUE;
 429 }
 430
 431 static bool r300_is_blending_supported(struct r300_screen *rscreen,
 432                                        enum pipe_format format)
 433 {
 434     int c;
 435     const struct util_format_description *desc =
 436         util_format_description(format);
 437
 438     if (desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 439         return false;
 440
 441     c = util_format_get_first_non_void_channel(format);
 442
 443     /* RGBA16F */
 444     if (rscreen->caps.is_r500 &&
 445         desc->nr_channels == 4 &&
 446         desc->channel[c].size == 16 &&
 447         desc->channel[c].type == UTIL_FORMAT_TYPE_FLOAT)
 448         return true;
 449
 450     if (desc->channel[c].normalized &&
 451         desc->channel[c].type == UTIL_FORMAT_TYPE_UNSIGNED &&
 452         desc->channel[c].size >= 4 &&
 453         desc->channel[c].size <= 10) {
 454         /* RGB10_A2, RGBA8, RGB5_A1, RGBA4, RGB565 */
 455         if (desc->nr_channels >= 3)
 456             return true;
 457
 458         if (format == PIPE_FORMAT_R8G8_UNORM)
 459             return true;
 460
 461         /* R8, I8, L8, A8 */
 462         if (desc->nr_channels == 1)
 463             return true;
 464     }
 465
 466     return false;
 467 }
 468
 469 static boolean r300_is_format_supported(struct pipe_screen* screen,
 470                                         enum pipe_format format,
 471                                         enum pipe_texture_target target,
 472                                         unsigned sample_count,
 473                                         unsigned usage)
 474 {
 475     uint32_t retval = 0;
 476     boolean drm_2_8_0 = r300_screen(screen)->info.drm_minor >= 8;
 477     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 478     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 479     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 480                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 481                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 482                               format == PIPE_FORMAT_B10G10R10X2_UNORM ||
 483                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 484     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 485                        format == PIPE_FORMAT_RGTC1_SNORM ||
 486                        format == PIPE_FORMAT_LATC1_UNORM ||
 487                        format == PIPE_FORMAT_LATC1_SNORM;
 488     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 489                        format == PIPE_FORMAT_RGTC2_SNORM ||
 490                        format == PIPE_FORMAT_LATC2_UNORM ||
 491                        format == PIPE_FORMAT_LATC2_SNORM;
 492     boolean is_x16f_xy16f = format == PIPE_FORMAT_R16_FLOAT ||
 493                             format == PIPE_FORMAT_R16G16_FLOAT ||
 494                             format == PIPE_FORMAT_A16_FLOAT ||
 495                             format == PIPE_FORMAT_L16_FLOAT ||
 496                             format == PIPE_FORMAT_L16A16_FLOAT ||
 497                             format == PIPE_FORMAT_R16A16_FLOAT ||
 498                             format == PIPE_FORMAT_I16_FLOAT;
 499     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 500                             format == PIPE_FORMAT_R16G16_FLOAT ||
 501                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 502                             format == PIPE_FORMAT_R16G16B16A16_FLOAT ||
 503                             format == PIPE_FORMAT_R16G16B16X16_FLOAT;
 504     const struct util_format_description *desc;
 505
 506     if (!util_format_is_supported(format, usage))
 507        return FALSE;
 508
 509     /* Check multisampling support. */
 510     switch (sample_count) {
 511         case 0:
 512         case 1:
 513             break;
 514         case 2:
 515         case 4:
 516         case 6:
 517             /* We need DRM 2.8.0. */
 518             if (!drm_2_8_0) {
 519                 return FALSE;
 520             }
 521             /* No texturing and scanout. */
 522             if (usage & (PIPE_BIND_SAMPLER_VIEW |
 523                          PIPE_BIND_DISPLAY_TARGET |
 524                          PIPE_BIND_SCANOUT)) {
 525                 return FALSE;
 526             }
 527
 528             desc = util_format_description(format);
 529
 530             if (is_r500) {
 531                 /* Only allow depth/stencil, RGBA8, RGBA1010102, RGBA16F. */
 532                 if (!util_format_is_depth_or_stencil(format) &&
 533                     !util_format_is_rgba8_variant(desc) &&
 534                     !util_format_is_rgba1010102_variant(desc) &&
 535                     format != PIPE_FORMAT_R16G16B16A16_FLOAT &&
 536                     format != PIPE_FORMAT_R16G16B16X16_FLOAT) {
 537                     return FALSE;
 538                 }
 539             } else {
 540                 /* Only allow depth/stencil, RGBA8. */
 541                 if (!util_format_is_depth_or_stencil(format) &&
 542                     !util_format_is_rgba8_variant(desc)) {
 543                     return FALSE;
 544                 }
 545             }
 546             break;
 547         default:
 548             return FALSE;
 549     }
 550
 551     /* Check sampler format support. */
 552     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 553         /* these two are broken for an unknown reason */
 554         format != PIPE_FORMAT_R8G8B8X8_SNORM &&
 555         format != PIPE_FORMAT_R16G16B16X16_SNORM &&
 556         /* ATI1N is r5xx-only. */
 557         (is_r500 || !is_ati1n) &&
 558         /* ATI2N is supported on r4xx-r5xx. */
 559         (is_r400 || is_r500 || !is_ati2n) &&
 560         /* R16F and RG16F texture support was added in as late as DRM 2.8.0 */
 561         (drm_2_8_0 || !is_x16f_xy16f) &&
 562         r300_is_sampler_format_supported(format)) {
 563         retval |= PIPE_BIND_SAMPLER_VIEW;
 564     }
 565
 566     /* Check colorbuffer format support. */
 567     if ((usage & (PIPE_BIND_RENDER_TARGET |
 568                   PIPE_BIND_DISPLAY_TARGET |
 569                   PIPE_BIND_SCANOUT |
 570                   PIPE_BIND_SHARED |
 571                   PIPE_BIND_BLENDABLE)) &&
 572         /* 2101010 cannot be rendered to on non-r5xx. */
 573         (!is_color2101010 || (is_r500 && drm_2_8_0)) &&
 574         r300_is_colorbuffer_format_supported(format)) {
 575         retval |= usage &
 576             (PIPE_BIND_RENDER_TARGET |
 577              PIPE_BIND_DISPLAY_TARGET |
 578              PIPE_BIND_SCANOUT |
 579              PIPE_BIND_SHARED);
 580
 581         if (r300_is_blending_supported(r300_screen(screen), format)) {
 582             retval |= usage & PIPE_BIND_BLENDABLE;
 583         }
 584     }
 585
 586     /* Check depth-stencil format support. */
 587     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 588         r300_is_zs_format_supported(format)) {
 589         retval |= PIPE_BIND_DEPTH_STENCIL;
 590     }
 591
 592     /* Check vertex buffer format support. */
 593     if (usage & PIPE_BIND_VERTEX_BUFFER) {
 594         if (r300_screen(screen)->caps.has_tcl) {
 595             /* Half float is supported on >= R400. */
 596             if ((is_r400 || is_r500 || !is_half_float) &&
 597                 r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
 598                 retval |= PIPE_BIND_VERTEX_BUFFER;
 599             }
 600         } else {
 601             /* SW TCL */
 602             if (!util_format_is_pure_integer(format)) {
 603                 retval |= PIPE_BIND_VERTEX_BUFFER;
 604             }
 605         }
 606     }
 607
 608     /* Transfers are always supported. */
 609     if (usage & PIPE_BIND_TRANSFER_READ)
 610         retval |= PIPE_BIND_TRANSFER_READ;
 611     if (usage & PIPE_BIND_TRANSFER_WRITE)
 612         retval |= PIPE_BIND_TRANSFER_WRITE;
 613
 614     return retval == usage;
 615 }
 616
 617 static void r300_destroy_screen(struct pipe_screen* pscreen)
 618 {
 619     struct r300_screen* r300screen = r300_screen(pscreen);
 620     struct radeon_winsys *rws = radeon_winsys(pscreen);
 621
 622     if (rws && !rws->unref(rws))
 623       return;
 624
 625     pipe_mutex_destroy(r300screen->cmask_mutex);
 626
 627     if (rws)
 628       rws->destroy(rws);
 629
 630     FREE(r300screen);
 631 }
 632
 633 static void r300_fence_reference(struct pipe_screen *screen,
 634                                  struct pipe_fence_handle **ptr,
 635                                  struct pipe_fence_handle *fence)
 636 {
 637     struct radeon_winsys *rws = r300_screen(screen)->rws;
 638
 639     rws->fence_reference(ptr, fence);
 640 }
 641
 642 static boolean r300_fence_signalled(struct pipe_screen *screen,
 643                                     struct pipe_fence_handle *fence)
 644 {
 645     struct radeon_winsys *rws = r300_screen(screen)->rws;
 646
 647     return rws->fence_wait(rws, fence, 0);
 648 }
 649
 650 static boolean r300_fence_finish(struct pipe_screen *screen,
 651                                  struct pipe_fence_handle *fence,
 652                                  uint64_t timeout)
 653 {
 654     struct radeon_winsys *rws = r300_screen(screen)->rws;
 655
 656     return rws->fence_wait(rws, fence, timeout);
 657 }
 658
 659 struct pipe_screen* r300_screen_create(struct radeon_winsys *rws)
 660 {
 661     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 662
 663     if (!r300screen) {
 664         FREE(r300screen);
 665         return NULL;
 666     }
 667
 668     rws->query_info(rws, &r300screen->info);
 669
 670     r300_init_debug(r300screen);
 671     r300_parse_chipset(r300screen->info.pci_id, &r300screen->caps);
 672
 673     if (SCREEN_DBG_ON(r300screen, DBG_NO_ZMASK))
 674         r300screen->caps.zmask_ram = 0;
 675     if (SCREEN_DBG_ON(r300screen, DBG_NO_HIZ))
 676         r300screen->caps.hiz_ram = 0;
 677
 678     if (r300screen->info.drm_minor < 8)
 679         r300screen->caps.has_us_format = FALSE;
 680
 681     r300screen->rws = rws;
 682     r300screen->screen.destroy = r300_destroy_screen;
 683     r300screen->screen.get_name = r300_get_name;
 684     r300screen->screen.get_vendor = r300_get_vendor;
 685     r300screen->screen.get_param = r300_get_param;
 686     r300screen->screen.get_shader_param = r300_get_shader_param;
 687     r300screen->screen.get_paramf = r300_get_paramf;
 688     r300screen->screen.get_video_param = r300_get_video_param;
 689     r300screen->screen.is_format_supported = r300_is_format_supported;
 690     r300screen->screen.is_video_format_supported = vl_video_buffer_is_format_supported;
 691     r300screen->screen.context_create = r300_create_context;
 692     r300screen->screen.fence_reference = r300_fence_reference;
 693     r300screen->screen.fence_signalled = r300_fence_signalled;
 694     r300screen->screen.fence_finish = r300_fence_finish;
 695
 696     r300_init_screen_resource_functions(r300screen);
 697
 698     util_format_s3tc_init();
 699     pipe_mutex_init(r300screen->cmask_mutex);
 700
 701     return &r300screen->screen;
 702 }