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* r300_get_device_vendor(struct pipe_screen* pscreen)
  51 {
  52     return "ATI";
  53 }
  54
  55 static const char* chip_families[] = {
  56     "unknown",
  57     "ATI R300",
  58     "ATI R350",
  59     "ATI RV350",
  60     "ATI RV370",
  61     "ATI RV380",
  62     "ATI RS400",
  63     "ATI RC410",
  64     "ATI RS480",
  65     "ATI R420",
  66     "ATI R423",
  67     "ATI R430",
  68     "ATI R480",
  69     "ATI R481",
  70     "ATI RV410",
  71     "ATI RS600",
  72     "ATI RS690",
  73     "ATI RS740",
  74     "ATI RV515",
  75     "ATI R520",
  76     "ATI RV530",
  77     "ATI R580",
  78     "ATI RV560",
  79     "ATI RV570"
  80 };
  81
  82 static const char* r300_get_name(struct pipe_screen* pscreen)
  83 {
  84     struct r300_screen* r300screen = r300_screen(pscreen);
  85
  86     return chip_families[r300screen->caps.family];
  87 }
  88
  89 static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
  90 {
  91     struct r300_screen* r300screen = r300_screen(pscreen);
  92     boolean is_r500 = r300screen->caps.is_r500;
  93
  94     switch (param) {
  95         /* Supported features (boolean caps). */
  96         case PIPE_CAP_NPOT_TEXTURES:
  97         case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
  98         case PIPE_CAP_TWO_SIDED_STENCIL:
  99         case PIPE_CAP_ANISOTROPIC_FILTER:
 100         case PIPE_CAP_POINT_SPRITE:
 101         case PIPE_CAP_OCCLUSION_QUERY:
 102         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 103         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 104         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 105         case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 106         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 107         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 108         case PIPE_CAP_CONDITIONAL_RENDER:
 109         case PIPE_CAP_TEXTURE_BARRIER:
 110         case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 111         case PIPE_CAP_USER_INDEX_BUFFERS:
 112         case PIPE_CAP_USER_CONSTANT_BUFFERS:
 113         case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 114         case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 115         case PIPE_CAP_CLIP_HALFZ:
 116             return 1;
 117
 118         case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 119             return R300_BUFFER_ALIGNMENT;
 120
 121         case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 122             return 16;
 123
 124         case PIPE_CAP_GLSL_FEATURE_LEVEL:
 125             return 120;
 126
 127         /* r300 cannot do swizzling of compressed textures. Supported otherwise. */
 128         case PIPE_CAP_TEXTURE_SWIZZLE:
 129             return util_format_s3tc_enabled ? r300screen->caps.dxtc_swizzle : 1;
 130
 131         /* We don't support color clamping on r500, so that we can use color
 132          * intepolators for generic varyings. */
 133         case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 134             return !is_r500;
 135
 136         /* Supported on r500 only. */
 137         case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 138         case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 139         case PIPE_CAP_SM3:
 140             return is_r500 ? 1 : 0;
 141
 142         /* Unsupported features. */
 143         case PIPE_CAP_QUERY_TIME_ELAPSED:
 144         case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 145         case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 146         case PIPE_CAP_INDEP_BLEND_ENABLE:
 147         case PIPE_CAP_INDEP_BLEND_FUNC:
 148         case PIPE_CAP_DEPTH_CLIP_DISABLE:
 149         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 150         case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 151         case PIPE_CAP_TGSI_INSTANCEID:
 152         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 153         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 154         case PIPE_CAP_SEAMLESS_CUBE_MAP:
 155         case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 156         case PIPE_CAP_MIN_TEXEL_OFFSET:
 157         case PIPE_CAP_MAX_TEXEL_OFFSET:
 158         case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 159         case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
 160         case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 161         case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 162         case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 163         case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 164         case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 165         case PIPE_CAP_MAX_VERTEX_STREAMS:
 166         case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 167         case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 168         case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 169         case PIPE_CAP_COMPUTE:
 170         case PIPE_CAP_START_INSTANCE:
 171         case PIPE_CAP_QUERY_TIMESTAMP:
 172         case PIPE_CAP_TEXTURE_MULTISAMPLE:
 173         case PIPE_CAP_CUBE_MAP_ARRAY:
 174         case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 175         case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 176         case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 177         case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 178         case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 179         case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 180         case PIPE_CAP_TEXTURE_GATHER_SM5:
 181         case PIPE_CAP_TEXTURE_QUERY_LOD:
 182         case PIPE_CAP_FAKE_SW_MSAA:
 183         case PIPE_CAP_SAMPLE_SHADING:
 184         case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 185         case PIPE_CAP_DRAW_INDIRECT:
 186         case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 187         case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 188         case PIPE_CAP_SAMPLER_VIEW_TARGET:
 189         case PIPE_CAP_VERTEXID_NOBASE:
 190         case PIPE_CAP_POLYGON_OFFSET_CLAMP:
 191         case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
 192         case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
 193             return 0;
 194
 195         /* SWTCL-only features. */
 196         case PIPE_CAP_PRIMITIVE_RESTART:
 197         case PIPE_CAP_USER_VERTEX_BUFFERS:
 198         case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 199             return !r300screen->caps.has_tcl;
 200
 201         /* HWTCL-only features / limitations. */
 202         case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 203         case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 204         case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 205             return r300screen->caps.has_tcl;
 206         case PIPE_CAP_TGSI_TEXCOORD:
 207             return 0;
 208
 209         /* Texturing. */
 210         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 211         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 212         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 213             /* 13 == 4096, 12 == 2048 */
 214             return is_r500 ? 13 : 12;
 215
 216         /* Render targets. */
 217         case PIPE_CAP_MAX_RENDER_TARGETS:
 218             return 4;
 219         case PIPE_CAP_ENDIANNESS:
 220             return PIPE_ENDIAN_LITTLE;
 221
 222         case PIPE_CAP_MAX_VIEWPORTS:
 223             return 1;
 224
 225         case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 226             return 2048;
 227
 228         case PIPE_CAP_VENDOR_ID:
 229                 return 0x1002;
 230         case PIPE_CAP_DEVICE_ID:
 231                 return r300screen->info.pci_id;
 232         case PIPE_CAP_ACCELERATED:
 233                 return 1;
 234         case PIPE_CAP_VIDEO_MEMORY:
 235                 return r300screen->info.vram_size >> 20;
 236         case PIPE_CAP_UMA:
 237                 return 0;
 238     }
 239     return 0;
 240 }
 241
 242 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 243 {
 244    struct r300_screen* r300screen = r300_screen(pscreen);
 245    boolean is_r400 = r300screen->caps.is_r400;
 246    boolean is_r500 = r300screen->caps.is_r500;
 247
 248    switch (shader) {
 249     case PIPE_SHADER_FRAGMENT:
 250         switch (param)
 251         {
 252         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 253             return is_r500 || is_r400 ? 512 : 96;
 254         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 255             return is_r500 || is_r400 ? 512 : 64;
 256         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 257             return is_r500 || is_r400 ? 512 : 32;
 258         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 259             return is_r500 ? 511 : 4;
 260         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 261             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 262             /* Fragment shader limits. */
 263         case PIPE_SHADER_CAP_MAX_INPUTS:
 264             /* 2 colors + 8 texcoords are always supported
 265              * (minus fog and wpos).
 266              *
 267              * R500 has the ability to turn 3rd and 4th color into
 268              * additional texcoords but there is no two-sided color
 269              * selection then. However the facing bit can be used instead. */
 270             return 10;
 271         case PIPE_SHADER_CAP_MAX_OUTPUTS:
 272             return 4;
 273         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 274             return (is_r500 ? 256 : 32) * sizeof(float[4]);
 275         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 276             return 1;
 277         case PIPE_SHADER_CAP_MAX_TEMPS:
 278             return is_r500 ? 128 : is_r400 ? 64 : 32;
 279         case PIPE_SHADER_CAP_MAX_PREDS:
 280             return 0; /* unused */
 281         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 282         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 283            return r300screen->caps.num_tex_units;
 284         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 285         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 286         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 287         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 288         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 289         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 290         case PIPE_SHADER_CAP_SUBROUTINES:
 291         case PIPE_SHADER_CAP_INTEGERS:
 292         case PIPE_SHADER_CAP_DOUBLES:
 293         case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
 294         case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
 295         case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
 296             return 0;
 297         case PIPE_SHADER_CAP_PREFERRED_IR:
 298             return PIPE_SHADER_IR_TGSI;
 299         }
 300         break;
 301     case PIPE_SHADER_VERTEX:
 302         switch (param)
 303         {
 304         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 305         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 306         case PIPE_SHADER_CAP_SUBROUTINES:
 307             return 0;
 308         default:;
 309         }
 310
 311         if (!r300screen->caps.has_tcl) {
 312             return draw_get_shader_param(shader, param);
 313         }
 314
 315         switch (param)
 316         {
 317         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 318         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 319             return is_r500 ? 1024 : 256;
 320         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 321             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 322         case PIPE_SHADER_CAP_MAX_INPUTS:
 323             return 16;
 324         case PIPE_SHADER_CAP_MAX_OUTPUTS:
 325             return 10;
 326         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 327             return 256 * sizeof(float[4]);
 328         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 329             return 1;
 330         case PIPE_SHADER_CAP_MAX_TEMPS:
 331             return 32;
 332         case PIPE_SHADER_CAP_MAX_PREDS:
 333             return 0; /* unused */
 334         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 335             return 1;
 336         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 337         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 338         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 339         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 340         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 341         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 342         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 343         case PIPE_SHADER_CAP_SUBROUTINES:
 344         case PIPE_SHADER_CAP_INTEGERS:
 345         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 346         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 347         case PIPE_SHADER_CAP_DOUBLES:
 348         case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
 349         case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
 350         case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
 351             return 0;
 352         case PIPE_SHADER_CAP_PREFERRED_IR:
 353             return PIPE_SHADER_IR_TGSI;
 354         }
 355         break;
 356     }
 357     return 0;
 358 }
 359
 360 static float r300_get_paramf(struct pipe_screen* pscreen,
 361                              enum pipe_capf param)
 362 {
 363     struct r300_screen* r300screen = r300_screen(pscreen);
 364
 365     switch (param) {
 366         case PIPE_CAPF_MAX_LINE_WIDTH:
 367         case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 368         case PIPE_CAPF_MAX_POINT_WIDTH:
 369         case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 370             /* The maximum dimensions of the colorbuffer are our practical
 371              * rendering limits. 2048 pixels should be enough for anybody. */
 372             if (r300screen->caps.is_r500) {
 373                 return 4096.0f;
 374             } else if (r300screen->caps.is_r400) {
 375                 return 4021.0f;
 376             } else {
 377                 return 2560.0f;
 378             }
 379         case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 380             return 16.0f;
 381         case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 382             return 16.0f;
 383         case PIPE_CAPF_GUARD_BAND_LEFT:
 384         case PIPE_CAPF_GUARD_BAND_TOP:
 385         case PIPE_CAPF_GUARD_BAND_RIGHT:
 386         case PIPE_CAPF_GUARD_BAND_BOTTOM:
 387             return 0.0f;
 388         default:
 389             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 390                          param);
 391             return 0.0f;
 392     }
 393 }
 394
 395 static int r300_get_video_param(struct pipe_screen *screen,
 396                                 enum pipe_video_profile profile,
 397                                 enum pipe_video_entrypoint entrypoint,
 398                                 enum pipe_video_cap param)
 399 {
 400    switch (param) {
 401       case PIPE_VIDEO_CAP_SUPPORTED:
 402          return vl_profile_supported(screen, profile, entrypoint);
 403       case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 404          return 0;
 405       case PIPE_VIDEO_CAP_MAX_WIDTH:
 406       case PIPE_VIDEO_CAP_MAX_HEIGHT:
 407          return vl_video_buffer_max_size(screen);
 408       case PIPE_VIDEO_CAP_PREFERED_FORMAT:
 409          return PIPE_FORMAT_NV12;
 410       case PIPE_VIDEO_CAP_PREFERS_INTERLACED:
 411          return false;
 412       case PIPE_VIDEO_CAP_SUPPORTS_INTERLACED:
 413          return false;
 414       case PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE:
 415          return true;
 416       case PIPE_VIDEO_CAP_MAX_LEVEL:
 417          return vl_level_supported(screen, profile);
 418       default:
 419          return 0;
 420    }
 421 }
 422
 423 /**
 424  * Whether the format matches:
 425  *   PIPE_FORMAT_?10?10?10?2_UNORM
 426  */
 427 static INLINE boolean
 428 util_format_is_rgba1010102_variant(const struct util_format_description *desc)
 429 {
 430    static const unsigned size[4] = {10, 10, 10, 2};
 431    unsigned chan;
 432
 433    if (desc->block.width != 1 ||
 434        desc->block.height != 1 ||
 435        desc->block.bits != 32)
 436       return FALSE;
 437
 438    for (chan = 0; chan < 4; ++chan) {
 439       if(desc->channel[chan].type != UTIL_FORMAT_TYPE_UNSIGNED &&
 440          desc->channel[chan].type != UTIL_FORMAT_TYPE_VOID)
 441          return FALSE;
 442       if (desc->channel[chan].size != size[chan])
 443          return FALSE;
 444    }
 445
 446    return TRUE;
 447 }
 448
 449 static bool r300_is_blending_supported(struct r300_screen *rscreen,
 450                                        enum pipe_format format)
 451 {
 452     int c;
 453     const struct util_format_description *desc =
 454         util_format_description(format);
 455
 456     if (desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 457         return false;
 458
 459     c = util_format_get_first_non_void_channel(format);
 460
 461     /* RGBA16F */
 462     if (rscreen->caps.is_r500 &&
 463         desc->nr_channels == 4 &&
 464         desc->channel[c].size == 16 &&
 465         desc->channel[c].type == UTIL_FORMAT_TYPE_FLOAT)
 466         return true;
 467
 468     if (desc->channel[c].normalized &&
 469         desc->channel[c].type == UTIL_FORMAT_TYPE_UNSIGNED &&
 470         desc->channel[c].size >= 4 &&
 471         desc->channel[c].size <= 10) {
 472         /* RGB10_A2, RGBA8, RGB5_A1, RGBA4, RGB565 */
 473         if (desc->nr_channels >= 3)
 474             return true;
 475
 476         if (format == PIPE_FORMAT_R8G8_UNORM)
 477             return true;
 478
 479         /* R8, I8, L8, A8 */
 480         if (desc->nr_channels == 1)
 481             return true;
 482     }
 483
 484     return false;
 485 }
 486
 487 static boolean r300_is_format_supported(struct pipe_screen* screen,
 488                                         enum pipe_format format,
 489                                         enum pipe_texture_target target,
 490                                         unsigned sample_count,
 491                                         unsigned usage)
 492 {
 493     uint32_t retval = 0;
 494     boolean drm_2_8_0 = r300_screen(screen)->info.drm_minor >= 8;
 495     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 496     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 497     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 498                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 499                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 500                               format == PIPE_FORMAT_B10G10R10X2_UNORM ||
 501                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 502     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 503                        format == PIPE_FORMAT_RGTC1_SNORM ||
 504                        format == PIPE_FORMAT_LATC1_UNORM ||
 505                        format == PIPE_FORMAT_LATC1_SNORM;
 506     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 507                        format == PIPE_FORMAT_RGTC2_SNORM ||
 508                        format == PIPE_FORMAT_LATC2_UNORM ||
 509                        format == PIPE_FORMAT_LATC2_SNORM;
 510     boolean is_x16f_xy16f = format == PIPE_FORMAT_R16_FLOAT ||
 511                             format == PIPE_FORMAT_R16G16_FLOAT ||
 512                             format == PIPE_FORMAT_A16_FLOAT ||
 513                             format == PIPE_FORMAT_L16_FLOAT ||
 514                             format == PIPE_FORMAT_L16A16_FLOAT ||
 515                             format == PIPE_FORMAT_R16A16_FLOAT ||
 516                             format == PIPE_FORMAT_I16_FLOAT;
 517     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 518                             format == PIPE_FORMAT_R16G16_FLOAT ||
 519                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 520                             format == PIPE_FORMAT_R16G16B16A16_FLOAT ||
 521                             format == PIPE_FORMAT_R16G16B16X16_FLOAT;
 522     const struct util_format_description *desc;
 523
 524     if (!util_format_is_supported(format, usage))
 525        return FALSE;
 526
 527     /* Check multisampling support. */
 528     switch (sample_count) {
 529         case 0:
 530         case 1:
 531             break;
 532         case 2:
 533         case 4:
 534         case 6:
 535             /* We need DRM 2.8.0. */
 536             if (!drm_2_8_0) {
 537                 return FALSE;
 538             }
 539             /* No texturing and scanout. */
 540             if (usage & (PIPE_BIND_SAMPLER_VIEW |
 541                          PIPE_BIND_DISPLAY_TARGET |
 542                          PIPE_BIND_SCANOUT)) {
 543                 return FALSE;
 544             }
 545
 546             desc = util_format_description(format);
 547
 548             if (is_r500) {
 549                 /* Only allow depth/stencil, RGBA8, RGBA1010102, RGBA16F. */
 550                 if (!util_format_is_depth_or_stencil(format) &&
 551                     !util_format_is_rgba8_variant(desc) &&
 552                     !util_format_is_rgba1010102_variant(desc) &&
 553                     format != PIPE_FORMAT_R16G16B16A16_FLOAT &&
 554                     format != PIPE_FORMAT_R16G16B16X16_FLOAT) {
 555                     return FALSE;
 556                 }
 557             } else {
 558                 /* Only allow depth/stencil, RGBA8. */
 559                 if (!util_format_is_depth_or_stencil(format) &&
 560                     !util_format_is_rgba8_variant(desc)) {
 561                     return FALSE;
 562                 }
 563             }
 564             break;
 565         default:
 566             return FALSE;
 567     }
 568
 569     /* Check sampler format support. */
 570     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 571         /* these two are broken for an unknown reason */
 572         format != PIPE_FORMAT_R8G8B8X8_SNORM &&
 573         format != PIPE_FORMAT_R16G16B16X16_SNORM &&
 574         /* ATI1N is r5xx-only. */
 575         (is_r500 || !is_ati1n) &&
 576         /* ATI2N is supported on r4xx-r5xx. */
 577         (is_r400 || is_r500 || !is_ati2n) &&
 578         /* R16F and RG16F texture support was added in as late as DRM 2.8.0 */
 579         (drm_2_8_0 || !is_x16f_xy16f) &&
 580         r300_is_sampler_format_supported(format)) {
 581         retval |= PIPE_BIND_SAMPLER_VIEW;
 582     }
 583
 584     /* Check colorbuffer format support. */
 585     if ((usage & (PIPE_BIND_RENDER_TARGET |
 586                   PIPE_BIND_DISPLAY_TARGET |
 587                   PIPE_BIND_SCANOUT |
 588                   PIPE_BIND_SHARED |
 589                   PIPE_BIND_BLENDABLE)) &&
 590         /* 2101010 cannot be rendered to on non-r5xx. */
 591         (!is_color2101010 || (is_r500 && drm_2_8_0)) &&
 592         r300_is_colorbuffer_format_supported(format)) {
 593         retval |= usage &
 594             (PIPE_BIND_RENDER_TARGET |
 595              PIPE_BIND_DISPLAY_TARGET |
 596              PIPE_BIND_SCANOUT |
 597              PIPE_BIND_SHARED);
 598
 599         if (r300_is_blending_supported(r300_screen(screen), format)) {
 600             retval |= usage & PIPE_BIND_BLENDABLE;
 601         }
 602     }
 603
 604     /* Check depth-stencil format support. */
 605     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 606         r300_is_zs_format_supported(format)) {
 607         retval |= PIPE_BIND_DEPTH_STENCIL;
 608     }
 609
 610     /* Check vertex buffer format support. */
 611     if (usage & PIPE_BIND_VERTEX_BUFFER) {
 612         if (r300_screen(screen)->caps.has_tcl) {
 613             /* Half float is supported on >= R400. */
 614             if ((is_r400 || is_r500 || !is_half_float) &&
 615                 r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
 616                 retval |= PIPE_BIND_VERTEX_BUFFER;
 617             }
 618         } else {
 619             /* SW TCL */
 620             if (!util_format_is_pure_integer(format)) {
 621                 retval |= PIPE_BIND_VERTEX_BUFFER;
 622             }
 623         }
 624     }
 625
 626     /* Transfers are always supported. */
 627     if (usage & PIPE_BIND_TRANSFER_READ)
 628         retval |= PIPE_BIND_TRANSFER_READ;
 629     if (usage & PIPE_BIND_TRANSFER_WRITE)
 630         retval |= PIPE_BIND_TRANSFER_WRITE;
 631
 632     return retval == usage;
 633 }
 634
 635 static void r300_destroy_screen(struct pipe_screen* pscreen)
 636 {
 637     struct r300_screen* r300screen = r300_screen(pscreen);
 638     struct radeon_winsys *rws = radeon_winsys(pscreen);
 639
 640     if (rws && !rws->unref(rws))
 641       return;
 642
 643     pipe_mutex_destroy(r300screen->cmask_mutex);
 644
 645     if (rws)
 646       rws->destroy(rws);
 647
 648     FREE(r300screen);
 649 }
 650
 651 static void r300_fence_reference(struct pipe_screen *screen,
 652                                  struct pipe_fence_handle **ptr,
 653                                  struct pipe_fence_handle *fence)
 654 {
 655     struct radeon_winsys *rws = r300_screen(screen)->rws;
 656
 657     rws->fence_reference(ptr, fence);
 658 }
 659
 660 static boolean r300_fence_signalled(struct pipe_screen *screen,
 661                                     struct pipe_fence_handle *fence)
 662 {
 663     struct radeon_winsys *rws = r300_screen(screen)->rws;
 664
 665     return rws->fence_wait(rws, fence, 0);
 666 }
 667
 668 static boolean r300_fence_finish(struct pipe_screen *screen,
 669                                  struct pipe_fence_handle *fence,
 670                                  uint64_t timeout)
 671 {
 672     struct radeon_winsys *rws = r300_screen(screen)->rws;
 673
 674     return rws->fence_wait(rws, fence, timeout);
 675 }
 676
 677 struct pipe_screen* r300_screen_create(struct radeon_winsys *rws)
 678 {
 679     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 680
 681     if (!r300screen) {
 682         FREE(r300screen);
 683         return NULL;
 684     }
 685
 686     rws->query_info(rws, &r300screen->info);
 687
 688     r300_init_debug(r300screen);
 689     r300_parse_chipset(r300screen->info.pci_id, &r300screen->caps);
 690
 691     if (SCREEN_DBG_ON(r300screen, DBG_NO_ZMASK))
 692         r300screen->caps.zmask_ram = 0;
 693     if (SCREEN_DBG_ON(r300screen, DBG_NO_HIZ))
 694         r300screen->caps.hiz_ram = 0;
 695
 696     if (r300screen->info.drm_minor < 8)
 697         r300screen->caps.has_us_format = FALSE;
 698
 699     r300screen->rws = rws;
 700     r300screen->screen.destroy = r300_destroy_screen;
 701     r300screen->screen.get_name = r300_get_name;
 702     r300screen->screen.get_vendor = r300_get_vendor;
 703     r300screen->screen.get_device_vendor = r300_get_device_vendor;
 704     r300screen->screen.get_param = r300_get_param;
 705     r300screen->screen.get_shader_param = r300_get_shader_param;
 706     r300screen->screen.get_paramf = r300_get_paramf;
 707     r300screen->screen.get_video_param = r300_get_video_param;
 708     r300screen->screen.is_format_supported = r300_is_format_supported;
 709     r300screen->screen.is_video_format_supported = vl_video_buffer_is_format_supported;
 710     r300screen->screen.context_create = r300_create_context;
 711     r300screen->screen.fence_reference = r300_fence_reference;
 712     r300screen->screen.fence_signalled = r300_fence_signalled;
 713     r300screen->screen.fence_finish = r300_fence_finish;
 714
 715     r300_init_screen_resource_functions(r300screen);
 716
 717     util_format_s3tc_init();
 718     pipe_mutex_init(r300screen->cmask_mutex);
 719
 720     return &r300screen->screen;
 721 }