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