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_MULTI_DRAW_INDIRECT:
 187         case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
 188         case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 189         case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 190         case PIPE_CAP_SAMPLER_VIEW_TARGET:
 191         case PIPE_CAP_VERTEXID_NOBASE:
 192         case PIPE_CAP_POLYGON_OFFSET_CLAMP:
 193         case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
 194         case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
 195         case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
 196         case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
 197         case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
 198         case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
 199         case PIPE_CAP_DEPTH_BOUNDS_TEST:
 200         case PIPE_CAP_TGSI_TXQS:
 201         case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
 202         case PIPE_CAP_SHAREABLE_SHADERS:
 203         case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
 204         case PIPE_CAP_CLEAR_TEXTURE:
 205         case PIPE_CAP_DRAW_PARAMETERS:
 206         case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
 207         case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
 208         case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
 209         case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
 210         case PIPE_CAP_INVALIDATE_BUFFER:
 211             return 0;
 212
 213         /* SWTCL-only features. */
 214         case PIPE_CAP_PRIMITIVE_RESTART:
 215         case PIPE_CAP_USER_VERTEX_BUFFERS:
 216         case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 217             return !r300screen->caps.has_tcl;
 218
 219         /* HWTCL-only features / limitations. */
 220         case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 221         case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 222         case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 223             return r300screen->caps.has_tcl;
 224         case PIPE_CAP_TGSI_TEXCOORD:
 225             return 0;
 226
 227         /* Texturing. */
 228         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 229         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 230         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 231             /* 13 == 4096, 12 == 2048 */
 232             return is_r500 ? 13 : 12;
 233
 234         /* Render targets. */
 235         case PIPE_CAP_MAX_RENDER_TARGETS:
 236             return 4;
 237         case PIPE_CAP_ENDIANNESS:
 238             return PIPE_ENDIAN_LITTLE;
 239
 240         case PIPE_CAP_MAX_VIEWPORTS:
 241             return 1;
 242
 243         case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 244             return 2048;
 245
 246         case PIPE_CAP_VENDOR_ID:
 247                 return 0x1002;
 248         case PIPE_CAP_DEVICE_ID:
 249                 return r300screen->info.pci_id;
 250         case PIPE_CAP_ACCELERATED:
 251                 return 1;
 252         case PIPE_CAP_VIDEO_MEMORY:
 253                 return r300screen->info.vram_size >> 20;
 254         case PIPE_CAP_UMA:
 255                 return 0;
 256     }
 257     return 0;
 258 }
 259
 260 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 261 {
 262    struct r300_screen* r300screen = r300_screen(pscreen);
 263    boolean is_r400 = r300screen->caps.is_r400;
 264    boolean is_r500 = r300screen->caps.is_r500;
 265
 266    switch (shader) {
 267     case PIPE_SHADER_FRAGMENT:
 268         switch (param)
 269         {
 270         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 271             return is_r500 || is_r400 ? 512 : 96;
 272         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 273             return is_r500 || is_r400 ? 512 : 64;
 274         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 275             return is_r500 || is_r400 ? 512 : 32;
 276         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 277             return is_r500 ? 511 : 4;
 278         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 279             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 280             /* Fragment shader limits. */
 281         case PIPE_SHADER_CAP_MAX_INPUTS:
 282             /* 2 colors + 8 texcoords are always supported
 283              * (minus fog and wpos).
 284              *
 285              * R500 has the ability to turn 3rd and 4th color into
 286              * additional texcoords but there is no two-sided color
 287              * selection then. However the facing bit can be used instead. */
 288             return 10;
 289         case PIPE_SHADER_CAP_MAX_OUTPUTS:
 290             return 4;
 291         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 292             return (is_r500 ? 256 : 32) * sizeof(float[4]);
 293         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 294         case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
 295             return 1;
 296         case PIPE_SHADER_CAP_MAX_TEMPS:
 297             return is_r500 ? 128 : is_r400 ? 64 : 32;
 298         case PIPE_SHADER_CAP_MAX_PREDS:
 299             return 0; /* unused */
 300         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 301         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 302            return r300screen->caps.num_tex_units;
 303         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 304         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 305         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 306         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 307         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 308         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 309         case PIPE_SHADER_CAP_SUBROUTINES:
 310         case PIPE_SHADER_CAP_INTEGERS:
 311         case PIPE_SHADER_CAP_DOUBLES:
 312         case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
 313         case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
 314         case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
 315         case PIPE_SHADER_CAP_MAX_SHADER_BUFFERS:
 316             return 0;
 317         case PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT:
 318             return 32;
 319         case PIPE_SHADER_CAP_PREFERRED_IR:
 320             return PIPE_SHADER_IR_TGSI;
 321         }
 322         break;
 323     case PIPE_SHADER_VERTEX:
 324         switch (param)
 325         {
 326         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 327         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 328         case PIPE_SHADER_CAP_SUBROUTINES:
 329             return 0;
 330         default:;
 331         }
 332
 333         if (!r300screen->caps.has_tcl) {
 334             return draw_get_shader_param(shader, param);
 335         }
 336
 337         switch (param)
 338         {
 339         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 340         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 341             return is_r500 ? 1024 : 256;
 342         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 343             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 344         case PIPE_SHADER_CAP_MAX_INPUTS:
 345             return 16;
 346         case PIPE_SHADER_CAP_MAX_OUTPUTS:
 347             return 10;
 348         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 349             return 256 * sizeof(float[4]);
 350         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 351             return 1;
 352         case PIPE_SHADER_CAP_MAX_TEMPS:
 353             return 32;
 354         case PIPE_SHADER_CAP_MAX_PREDS:
 355             return 0; /* unused */
 356         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 357         case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
 358             return 1;
 359         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 360         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 361         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 362         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 363         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 364         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 365         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 366         case PIPE_SHADER_CAP_SUBROUTINES:
 367         case PIPE_SHADER_CAP_INTEGERS:
 368         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 369         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 370         case PIPE_SHADER_CAP_DOUBLES:
 371         case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
 372         case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
 373         case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
 374         case PIPE_SHADER_CAP_MAX_SHADER_BUFFERS:
 375             return 0;
 376         case PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT:
 377             return 32;
 378         case PIPE_SHADER_CAP_PREFERRED_IR:
 379             return PIPE_SHADER_IR_TGSI;
 380         }
 381         break;
 382     }
 383     return 0;
 384 }
 385
 386 static float r300_get_paramf(struct pipe_screen* pscreen,
 387                              enum pipe_capf param)
 388 {
 389     struct r300_screen* r300screen = r300_screen(pscreen);
 390
 391     switch (param) {
 392         case PIPE_CAPF_MAX_LINE_WIDTH:
 393         case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 394         case PIPE_CAPF_MAX_POINT_WIDTH:
 395         case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 396             /* The maximum dimensions of the colorbuffer are our practical
 397              * rendering limits. 2048 pixels should be enough for anybody. */
 398             if (r300screen->caps.is_r500) {
 399                 return 4096.0f;
 400             } else if (r300screen->caps.is_r400) {
 401                 return 4021.0f;
 402             } else {
 403                 return 2560.0f;
 404             }
 405         case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 406             return 16.0f;
 407         case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 408             return 16.0f;
 409         case PIPE_CAPF_GUARD_BAND_LEFT:
 410         case PIPE_CAPF_GUARD_BAND_TOP:
 411         case PIPE_CAPF_GUARD_BAND_RIGHT:
 412         case PIPE_CAPF_GUARD_BAND_BOTTOM:
 413             return 0.0f;
 414         default:
 415             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 416                          param);
 417             return 0.0f;
 418     }
 419 }
 420
 421 static int r300_get_video_param(struct pipe_screen *screen,
 422                                 enum pipe_video_profile profile,
 423                                 enum pipe_video_entrypoint entrypoint,
 424                                 enum pipe_video_cap param)
 425 {
 426    switch (param) {
 427       case PIPE_VIDEO_CAP_SUPPORTED:
 428          return vl_profile_supported(screen, profile, entrypoint);
 429       case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 430          return 0;
 431       case PIPE_VIDEO_CAP_MAX_WIDTH:
 432       case PIPE_VIDEO_CAP_MAX_HEIGHT:
 433          return vl_video_buffer_max_size(screen);
 434       case PIPE_VIDEO_CAP_PREFERED_FORMAT:
 435          return PIPE_FORMAT_NV12;
 436       case PIPE_VIDEO_CAP_PREFERS_INTERLACED:
 437          return false;
 438       case PIPE_VIDEO_CAP_SUPPORTS_INTERLACED:
 439          return false;
 440       case PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE:
 441          return true;
 442       case PIPE_VIDEO_CAP_MAX_LEVEL:
 443          return vl_level_supported(screen, profile);
 444       default:
 445          return 0;
 446    }
 447 }
 448
 449 /**
 450  * Whether the format matches:
 451  *   PIPE_FORMAT_?10?10?10?2_UNORM
 452  */
 453 static inline boolean
 454 util_format_is_rgba1010102_variant(const struct util_format_description *desc)
 455 {
 456    static const unsigned size[4] = {10, 10, 10, 2};
 457    unsigned chan;
 458
 459    if (desc->block.width != 1 ||
 460        desc->block.height != 1 ||
 461        desc->block.bits != 32)
 462       return FALSE;
 463
 464    for (chan = 0; chan < 4; ++chan) {
 465       if(desc->channel[chan].type != UTIL_FORMAT_TYPE_UNSIGNED &&
 466          desc->channel[chan].type != UTIL_FORMAT_TYPE_VOID)
 467          return FALSE;
 468       if (desc->channel[chan].size != size[chan])
 469          return FALSE;
 470    }
 471
 472    return TRUE;
 473 }
 474
 475 static bool r300_is_blending_supported(struct r300_screen *rscreen,
 476                                        enum pipe_format format)
 477 {
 478     int c;
 479     const struct util_format_description *desc =
 480         util_format_description(format);
 481
 482     if (desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 483         return false;
 484
 485     c = util_format_get_first_non_void_channel(format);
 486
 487     /* RGBA16F */
 488     if (rscreen->caps.is_r500 &&
 489         desc->nr_channels == 4 &&
 490         desc->channel[c].size == 16 &&
 491         desc->channel[c].type == UTIL_FORMAT_TYPE_FLOAT)
 492         return true;
 493
 494     if (desc->channel[c].normalized &&
 495         desc->channel[c].type == UTIL_FORMAT_TYPE_UNSIGNED &&
 496         desc->channel[c].size >= 4 &&
 497         desc->channel[c].size <= 10) {
 498         /* RGB10_A2, RGBA8, RGB5_A1, RGBA4, RGB565 */
 499         if (desc->nr_channels >= 3)
 500             return true;
 501
 502         if (format == PIPE_FORMAT_R8G8_UNORM)
 503             return true;
 504
 505         /* R8, I8, L8, A8 */
 506         if (desc->nr_channels == 1)
 507             return true;
 508     }
 509
 510     return false;
 511 }
 512
 513 static boolean r300_is_format_supported(struct pipe_screen* screen,
 514                                         enum pipe_format format,
 515                                         enum pipe_texture_target target,
 516                                         unsigned sample_count,
 517                                         unsigned usage)
 518 {
 519     uint32_t retval = 0;
 520     boolean drm_2_8_0 = r300_screen(screen)->info.drm_minor >= 8;
 521     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 522     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 523     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 524                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 525                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 526                               format == PIPE_FORMAT_B10G10R10X2_UNORM ||
 527                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 528     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 529                        format == PIPE_FORMAT_RGTC1_SNORM ||
 530                        format == PIPE_FORMAT_LATC1_UNORM ||
 531                        format == PIPE_FORMAT_LATC1_SNORM;
 532     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 533                        format == PIPE_FORMAT_RGTC2_SNORM ||
 534                        format == PIPE_FORMAT_LATC2_UNORM ||
 535                        format == PIPE_FORMAT_LATC2_SNORM;
 536     boolean is_x16f_xy16f = format == PIPE_FORMAT_R16_FLOAT ||
 537                             format == PIPE_FORMAT_R16G16_FLOAT ||
 538                             format == PIPE_FORMAT_A16_FLOAT ||
 539                             format == PIPE_FORMAT_L16_FLOAT ||
 540                             format == PIPE_FORMAT_L16A16_FLOAT ||
 541                             format == PIPE_FORMAT_R16A16_FLOAT ||
 542                             format == PIPE_FORMAT_I16_FLOAT;
 543     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 544                             format == PIPE_FORMAT_R16G16_FLOAT ||
 545                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 546                             format == PIPE_FORMAT_R16G16B16A16_FLOAT ||
 547                             format == PIPE_FORMAT_R16G16B16X16_FLOAT;
 548     const struct util_format_description *desc;
 549
 550     if (!util_format_is_supported(format, usage))
 551        return FALSE;
 552
 553     /* Check multisampling support. */
 554     switch (sample_count) {
 555         case 0:
 556         case 1:
 557             break;
 558         case 2:
 559         case 4:
 560         case 6:
 561             /* We need DRM 2.8.0. */
 562             if (!drm_2_8_0) {
 563                 return FALSE;
 564             }
 565             /* No texturing and scanout. */
 566             if (usage & (PIPE_BIND_SAMPLER_VIEW |
 567                          PIPE_BIND_DISPLAY_TARGET |
 568                          PIPE_BIND_SCANOUT)) {
 569                 return FALSE;
 570             }
 571
 572             desc = util_format_description(format);
 573
 574             if (is_r500) {
 575                 /* Only allow depth/stencil, RGBA8, RGBA1010102, RGBA16F. */
 576                 if (!util_format_is_depth_or_stencil(format) &&
 577                     !util_format_is_rgba8_variant(desc) &&
 578                     !util_format_is_rgba1010102_variant(desc) &&
 579                     format != PIPE_FORMAT_R16G16B16A16_FLOAT &&
 580                     format != PIPE_FORMAT_R16G16B16X16_FLOAT) {
 581                     return FALSE;
 582                 }
 583             } else {
 584                 /* Only allow depth/stencil, RGBA8. */
 585                 if (!util_format_is_depth_or_stencil(format) &&
 586                     !util_format_is_rgba8_variant(desc)) {
 587                     return FALSE;
 588                 }
 589             }
 590             break;
 591         default:
 592             return FALSE;
 593     }
 594
 595     /* Check sampler format support. */
 596     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 597         /* these two are broken for an unknown reason */
 598         format != PIPE_FORMAT_R8G8B8X8_SNORM &&
 599         format != PIPE_FORMAT_R16G16B16X16_SNORM &&
 600         /* ATI1N is r5xx-only. */
 601         (is_r500 || !is_ati1n) &&
 602         /* ATI2N is supported on r4xx-r5xx. */
 603         (is_r400 || is_r500 || !is_ati2n) &&
 604         /* R16F and RG16F texture support was added in as late as DRM 2.8.0 */
 605         (drm_2_8_0 || !is_x16f_xy16f) &&
 606         r300_is_sampler_format_supported(format)) {
 607         retval |= PIPE_BIND_SAMPLER_VIEW;
 608     }
 609
 610     /* Check colorbuffer format support. */
 611     if ((usage & (PIPE_BIND_RENDER_TARGET |
 612                   PIPE_BIND_DISPLAY_TARGET |
 613                   PIPE_BIND_SCANOUT |
 614                   PIPE_BIND_SHARED |
 615                   PIPE_BIND_BLENDABLE)) &&
 616         /* 2101010 cannot be rendered to on non-r5xx. */
 617         (!is_color2101010 || (is_r500 && drm_2_8_0)) &&
 618         r300_is_colorbuffer_format_supported(format)) {
 619         retval |= usage &
 620             (PIPE_BIND_RENDER_TARGET |
 621              PIPE_BIND_DISPLAY_TARGET |
 622              PIPE_BIND_SCANOUT |
 623              PIPE_BIND_SHARED);
 624
 625         if (r300_is_blending_supported(r300_screen(screen), format)) {
 626             retval |= usage & PIPE_BIND_BLENDABLE;
 627         }
 628     }
 629
 630     /* Check depth-stencil format support. */
 631     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 632         r300_is_zs_format_supported(format)) {
 633         retval |= PIPE_BIND_DEPTH_STENCIL;
 634     }
 635
 636     /* Check vertex buffer format support. */
 637     if (usage & PIPE_BIND_VERTEX_BUFFER) {
 638         if (r300_screen(screen)->caps.has_tcl) {
 639             /* Half float is supported on >= R400. */
 640             if ((is_r400 || is_r500 || !is_half_float) &&
 641                 r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
 642                 retval |= PIPE_BIND_VERTEX_BUFFER;
 643             }
 644         } else {
 645             /* SW TCL */
 646             if (!util_format_is_pure_integer(format)) {
 647                 retval |= PIPE_BIND_VERTEX_BUFFER;
 648             }
 649         }
 650     }
 651
 652     /* Transfers are always supported. */
 653     if (usage & PIPE_BIND_TRANSFER_READ)
 654         retval |= PIPE_BIND_TRANSFER_READ;
 655     if (usage & PIPE_BIND_TRANSFER_WRITE)
 656         retval |= PIPE_BIND_TRANSFER_WRITE;
 657
 658     return retval == usage;
 659 }
 660
 661 static void r300_destroy_screen(struct pipe_screen* pscreen)
 662 {
 663     struct r300_screen* r300screen = r300_screen(pscreen);
 664     struct radeon_winsys *rws = radeon_winsys(pscreen);
 665
 666     if (rws && !rws->unref(rws))
 667       return;
 668
 669     pipe_mutex_destroy(r300screen->cmask_mutex);
 670
 671     if (rws)
 672       rws->destroy(rws);
 673
 674     FREE(r300screen);
 675 }
 676
 677 static void r300_fence_reference(struct pipe_screen *screen,
 678                                  struct pipe_fence_handle **ptr,
 679                                  struct pipe_fence_handle *fence)
 680 {
 681     struct radeon_winsys *rws = r300_screen(screen)->rws;
 682
 683     rws->fence_reference(ptr, fence);
 684 }
 685
 686 static boolean r300_fence_finish(struct pipe_screen *screen,
 687                                  struct pipe_fence_handle *fence,
 688                                  uint64_t timeout)
 689 {
 690     struct radeon_winsys *rws = r300_screen(screen)->rws;
 691
 692     return rws->fence_wait(rws, fence, timeout);
 693 }
 694
 695 struct pipe_screen* r300_screen_create(struct radeon_winsys *rws)
 696 {
 697     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 698
 699     if (!r300screen) {
 700         FREE(r300screen);
 701         return NULL;
 702     }
 703
 704     rws->query_info(rws, &r300screen->info);
 705
 706     r300_init_debug(r300screen);
 707     r300_parse_chipset(r300screen->info.pci_id, &r300screen->caps);
 708
 709     if (SCREEN_DBG_ON(r300screen, DBG_NO_ZMASK))
 710         r300screen->caps.zmask_ram = 0;
 711     if (SCREEN_DBG_ON(r300screen, DBG_NO_HIZ))
 712         r300screen->caps.hiz_ram = 0;
 713
 714     if (r300screen->info.drm_minor < 8)
 715         r300screen->caps.has_us_format = FALSE;
 716
 717     r300screen->rws = rws;
 718     r300screen->screen.destroy = r300_destroy_screen;
 719     r300screen->screen.get_name = r300_get_name;
 720     r300screen->screen.get_vendor = r300_get_vendor;
 721     r300screen->screen.get_device_vendor = r300_get_device_vendor;
 722     r300screen->screen.get_param = r300_get_param;
 723     r300screen->screen.get_shader_param = r300_get_shader_param;
 724     r300screen->screen.get_paramf = r300_get_paramf;
 725     r300screen->screen.get_video_param = r300_get_video_param;
 726     r300screen->screen.is_format_supported = r300_is_format_supported;
 727     r300screen->screen.is_video_format_supported = vl_video_buffer_is_format_supported;
 728     r300screen->screen.context_create = r300_create_context;
 729     r300screen->screen.fence_reference = r300_fence_reference;
 730     r300screen->screen.fence_finish = r300_fence_finish;
 731
 732     r300_init_screen_resource_functions(r300screen);
 733
 734     util_format_s3tc_init();
 735     pipe_mutex_init(r300screen->cmask_mutex);
 736
 737     return &r300screen->screen;
 738 }