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