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         case PIPE_CAP_GENERATE_MIPMAP:
 212         case PIPE_CAP_STRING_MARKER:
 213         case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
 214         case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
 215         case PIPE_CAP_QUERY_BUFFER_OBJECT:
 216         case PIPE_CAP_QUERY_MEMORY_INFO:
 217         case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
 218         case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
 219         case PIPE_CAP_CULL_DISTANCE:
 220         case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
 221         case PIPE_CAP_TGSI_VOTE:
 222         case PIPE_CAP_MAX_WINDOW_RECTANGLES:
 223             return 0;
 224
 225         /* SWTCL-only features. */
 226         case PIPE_CAP_PRIMITIVE_RESTART:
 227         case PIPE_CAP_USER_VERTEX_BUFFERS:
 228         case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 229             return !r300screen->caps.has_tcl;
 230
 231         /* HWTCL-only features / limitations. */
 232         case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 233         case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 234         case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 235             return r300screen->caps.has_tcl;
 236         case PIPE_CAP_TGSI_TEXCOORD:
 237             return 0;
 238
 239         /* Texturing. */
 240         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 241         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 242         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 243             /* 13 == 4096, 12 == 2048 */
 244             return is_r500 ? 13 : 12;
 245
 246         /* Render targets. */
 247         case PIPE_CAP_MAX_RENDER_TARGETS:
 248             return 4;
 249         case PIPE_CAP_ENDIANNESS:
 250             return PIPE_ENDIAN_LITTLE;
 251
 252         case PIPE_CAP_MAX_VIEWPORTS:
 253             return 1;
 254
 255         case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 256             return 2048;
 257
 258         case PIPE_CAP_VENDOR_ID:
 259                 return 0x1002;
 260         case PIPE_CAP_DEVICE_ID:
 261                 return r300screen->info.pci_id;
 262         case PIPE_CAP_ACCELERATED:
 263                 return 1;
 264         case PIPE_CAP_VIDEO_MEMORY:
 265                 return r300screen->info.vram_size >> 20;
 266         case PIPE_CAP_UMA:
 267                 return 0;
 268         case PIPE_CAP_PCI_GROUP:
 269             return r300screen->info.pci_domain;
 270         case PIPE_CAP_PCI_BUS:
 271             return r300screen->info.pci_bus;
 272         case PIPE_CAP_PCI_DEVICE:
 273             return r300screen->info.pci_dev;
 274         case PIPE_CAP_PCI_FUNCTION:
 275             return r300screen->info.pci_func;
 276     }
 277     return 0;
 278 }
 279
 280 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 281 {
 282    struct r300_screen* r300screen = r300_screen(pscreen);
 283    boolean is_r400 = r300screen->caps.is_r400;
 284    boolean is_r500 = r300screen->caps.is_r500;
 285
 286    switch (shader) {
 287     case PIPE_SHADER_FRAGMENT:
 288         switch (param)
 289         {
 290         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 291             return is_r500 || is_r400 ? 512 : 96;
 292         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 293             return is_r500 || is_r400 ? 512 : 64;
 294         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 295             return is_r500 || is_r400 ? 512 : 32;
 296         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 297             return is_r500 ? 511 : 4;
 298         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 299             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 300             /* Fragment shader limits. */
 301         case PIPE_SHADER_CAP_MAX_INPUTS:
 302             /* 2 colors + 8 texcoords are always supported
 303              * (minus fog and wpos).
 304              *
 305              * R500 has the ability to turn 3rd and 4th color into
 306              * additional texcoords but there is no two-sided color
 307              * selection then. However the facing bit can be used instead. */
 308             return 10;
 309         case PIPE_SHADER_CAP_MAX_OUTPUTS:
 310             return 4;
 311         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 312             return (is_r500 ? 256 : 32) * sizeof(float[4]);
 313         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 314         case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
 315             return 1;
 316         case PIPE_SHADER_CAP_MAX_TEMPS:
 317             return is_r500 ? 128 : is_r400 ? 64 : 32;
 318         case PIPE_SHADER_CAP_MAX_PREDS:
 319             return 0; /* unused */
 320         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 321         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 322            return r300screen->caps.num_tex_units;
 323         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 324         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 325         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 326         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 327         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 328         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 329         case PIPE_SHADER_CAP_SUBROUTINES:
 330         case PIPE_SHADER_CAP_INTEGERS:
 331         case PIPE_SHADER_CAP_DOUBLES:
 332         case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
 333         case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
 334         case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
 335         case PIPE_SHADER_CAP_MAX_SHADER_BUFFERS:
 336         case PIPE_SHADER_CAP_MAX_SHADER_IMAGES:
 337             return 0;
 338         case PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT:
 339             return 32;
 340         case PIPE_SHADER_CAP_PREFERRED_IR:
 341             return PIPE_SHADER_IR_TGSI;
 342         case PIPE_SHADER_CAP_SUPPORTED_IRS:
 343             return 0;
 344         }
 345         break;
 346     case PIPE_SHADER_VERTEX:
 347         switch (param)
 348         {
 349         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 350         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 351         case PIPE_SHADER_CAP_SUBROUTINES:
 352             return 0;
 353         default:;
 354         }
 355
 356         if (!r300screen->caps.has_tcl) {
 357             return draw_get_shader_param(shader, param);
 358         }
 359
 360         switch (param)
 361         {
 362         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 363         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 364             return is_r500 ? 1024 : 256;
 365         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 366             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 367         case PIPE_SHADER_CAP_MAX_INPUTS:
 368             return 16;
 369         case PIPE_SHADER_CAP_MAX_OUTPUTS:
 370             return 10;
 371         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 372             return 256 * sizeof(float[4]);
 373         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 374             return 1;
 375         case PIPE_SHADER_CAP_MAX_TEMPS:
 376             return 32;
 377         case PIPE_SHADER_CAP_MAX_PREDS:
 378             return 0; /* unused */
 379         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 380         case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
 381             return 1;
 382         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 383         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 384         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 385         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 386         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 387         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 388         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 389         case PIPE_SHADER_CAP_SUBROUTINES:
 390         case PIPE_SHADER_CAP_INTEGERS:
 391         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 392         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 393         case PIPE_SHADER_CAP_DOUBLES:
 394         case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
 395         case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
 396         case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
 397         case PIPE_SHADER_CAP_MAX_SHADER_BUFFERS:
 398         case PIPE_SHADER_CAP_MAX_SHADER_IMAGES:
 399             return 0;
 400         case PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT:
 401             return 32;
 402         case PIPE_SHADER_CAP_PREFERRED_IR:
 403             return PIPE_SHADER_IR_TGSI;
 404         case PIPE_SHADER_CAP_SUPPORTED_IRS:
 405             return 0;
 406         }
 407         break;
 408     }
 409     return 0;
 410 }
 411
 412 static float r300_get_paramf(struct pipe_screen* pscreen,
 413                              enum pipe_capf param)
 414 {
 415     struct r300_screen* r300screen = r300_screen(pscreen);
 416
 417     switch (param) {
 418         case PIPE_CAPF_MAX_LINE_WIDTH:
 419         case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 420         case PIPE_CAPF_MAX_POINT_WIDTH:
 421         case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 422             /* The maximum dimensions of the colorbuffer are our practical
 423              * rendering limits. 2048 pixels should be enough for anybody. */
 424             if (r300screen->caps.is_r500) {
 425                 return 4096.0f;
 426             } else if (r300screen->caps.is_r400) {
 427                 return 4021.0f;
 428             } else {
 429                 return 2560.0f;
 430             }
 431         case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 432             return 16.0f;
 433         case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 434             return 16.0f;
 435         case PIPE_CAPF_GUARD_BAND_LEFT:
 436         case PIPE_CAPF_GUARD_BAND_TOP:
 437         case PIPE_CAPF_GUARD_BAND_RIGHT:
 438         case PIPE_CAPF_GUARD_BAND_BOTTOM:
 439             return 0.0f;
 440         default:
 441             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 442                          param);
 443             return 0.0f;
 444     }
 445 }
 446
 447 static int r300_get_video_param(struct pipe_screen *screen,
 448                                 enum pipe_video_profile profile,
 449                                 enum pipe_video_entrypoint entrypoint,
 450                                 enum pipe_video_cap param)
 451 {
 452    switch (param) {
 453       case PIPE_VIDEO_CAP_SUPPORTED:
 454          return vl_profile_supported(screen, profile, entrypoint);
 455       case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 456          return 0;
 457       case PIPE_VIDEO_CAP_MAX_WIDTH:
 458       case PIPE_VIDEO_CAP_MAX_HEIGHT:
 459          return vl_video_buffer_max_size(screen);
 460       case PIPE_VIDEO_CAP_PREFERED_FORMAT:
 461          return PIPE_FORMAT_NV12;
 462       case PIPE_VIDEO_CAP_PREFERS_INTERLACED:
 463          return false;
 464       case PIPE_VIDEO_CAP_SUPPORTS_INTERLACED:
 465          return false;
 466       case PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE:
 467          return true;
 468       case PIPE_VIDEO_CAP_MAX_LEVEL:
 469          return vl_level_supported(screen, profile);
 470       default:
 471          return 0;
 472    }
 473 }
 474
 475 /**
 476  * Whether the format matches:
 477  *   PIPE_FORMAT_?10?10?10?2_UNORM
 478  */
 479 static inline boolean
 480 util_format_is_rgba1010102_variant(const struct util_format_description *desc)
 481 {
 482    static const unsigned size[4] = {10, 10, 10, 2};
 483    unsigned chan;
 484
 485    if (desc->block.width != 1 ||
 486        desc->block.height != 1 ||
 487        desc->block.bits != 32)
 488       return FALSE;
 489
 490    for (chan = 0; chan < 4; ++chan) {
 491       if(desc->channel[chan].type != UTIL_FORMAT_TYPE_UNSIGNED &&
 492          desc->channel[chan].type != UTIL_FORMAT_TYPE_VOID)
 493          return FALSE;
 494       if (desc->channel[chan].size != size[chan])
 495          return FALSE;
 496    }
 497
 498    return TRUE;
 499 }
 500
 501 static bool r300_is_blending_supported(struct r300_screen *rscreen,
 502                                        enum pipe_format format)
 503 {
 504     int c;
 505     const struct util_format_description *desc =
 506         util_format_description(format);
 507
 508     if (desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 509         return false;
 510
 511     c = util_format_get_first_non_void_channel(format);
 512
 513     /* RGBA16F */
 514     if (rscreen->caps.is_r500 &&
 515         desc->nr_channels == 4 &&
 516         desc->channel[c].size == 16 &&
 517         desc->channel[c].type == UTIL_FORMAT_TYPE_FLOAT)
 518         return true;
 519
 520     if (desc->channel[c].normalized &&
 521         desc->channel[c].type == UTIL_FORMAT_TYPE_UNSIGNED &&
 522         desc->channel[c].size >= 4 &&
 523         desc->channel[c].size <= 10) {
 524         /* RGB10_A2, RGBA8, RGB5_A1, RGBA4, RGB565 */
 525         if (desc->nr_channels >= 3)
 526             return true;
 527
 528         if (format == PIPE_FORMAT_R8G8_UNORM)
 529             return true;
 530
 531         /* R8, I8, L8, A8 */
 532         if (desc->nr_channels == 1)
 533             return true;
 534     }
 535
 536     return false;
 537 }
 538
 539 static boolean r300_is_format_supported(struct pipe_screen* screen,
 540                                         enum pipe_format format,
 541                                         enum pipe_texture_target target,
 542                                         unsigned sample_count,
 543                                         unsigned usage)
 544 {
 545     uint32_t retval = 0;
 546     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 547     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 548     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 549                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 550                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 551                               format == PIPE_FORMAT_B10G10R10X2_UNORM ||
 552                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 553     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 554                        format == PIPE_FORMAT_RGTC1_SNORM ||
 555                        format == PIPE_FORMAT_LATC1_UNORM ||
 556                        format == PIPE_FORMAT_LATC1_SNORM;
 557     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 558                        format == PIPE_FORMAT_RGTC2_SNORM ||
 559                        format == PIPE_FORMAT_LATC2_UNORM ||
 560                        format == PIPE_FORMAT_LATC2_SNORM;
 561     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 562                             format == PIPE_FORMAT_R16G16_FLOAT ||
 563                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 564                             format == PIPE_FORMAT_R16G16B16A16_FLOAT ||
 565                             format == PIPE_FORMAT_R16G16B16X16_FLOAT;
 566     const struct util_format_description *desc;
 567
 568     if (!util_format_is_supported(format, usage))
 569        return FALSE;
 570
 571     /* Check multisampling support. */
 572     switch (sample_count) {
 573         case 0:
 574         case 1:
 575             break;
 576         case 2:
 577         case 4:
 578         case 6:
 579             /* No texturing and scanout. */
 580             if (usage & (PIPE_BIND_SAMPLER_VIEW |
 581                          PIPE_BIND_DISPLAY_TARGET |
 582                          PIPE_BIND_SCANOUT)) {
 583                 return FALSE;
 584             }
 585
 586             desc = util_format_description(format);
 587
 588             if (is_r500) {
 589                 /* Only allow depth/stencil, RGBA8, RGBA1010102, RGBA16F. */
 590                 if (!util_format_is_depth_or_stencil(format) &&
 591                     !util_format_is_rgba8_variant(desc) &&
 592                     !util_format_is_rgba1010102_variant(desc) &&
 593                     format != PIPE_FORMAT_R16G16B16A16_FLOAT &&
 594                     format != PIPE_FORMAT_R16G16B16X16_FLOAT) {
 595                     return FALSE;
 596                 }
 597             } else {
 598                 /* Only allow depth/stencil, RGBA8. */
 599                 if (!util_format_is_depth_or_stencil(format) &&
 600                     !util_format_is_rgba8_variant(desc)) {
 601                     return FALSE;
 602                 }
 603             }
 604             break;
 605         default:
 606             return FALSE;
 607     }
 608
 609     /* Check sampler format support. */
 610     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 611         /* these two are broken for an unknown reason */
 612         format != PIPE_FORMAT_R8G8B8X8_SNORM &&
 613         format != PIPE_FORMAT_R16G16B16X16_SNORM &&
 614         /* ATI1N is r5xx-only. */
 615         (is_r500 || !is_ati1n) &&
 616         /* ATI2N is supported on r4xx-r5xx. */
 617         (is_r400 || is_r500 || !is_ati2n) &&
 618         r300_is_sampler_format_supported(format)) {
 619         retval |= PIPE_BIND_SAMPLER_VIEW;
 620     }
 621
 622     /* Check colorbuffer format support. */
 623     if ((usage & (PIPE_BIND_RENDER_TARGET |
 624                   PIPE_BIND_DISPLAY_TARGET |
 625                   PIPE_BIND_SCANOUT |
 626                   PIPE_BIND_SHARED |
 627                   PIPE_BIND_BLENDABLE)) &&
 628         /* 2101010 cannot be rendered to on non-r5xx. */
 629         (!is_color2101010 || is_r500) &&
 630         r300_is_colorbuffer_format_supported(format)) {
 631         retval |= usage &
 632             (PIPE_BIND_RENDER_TARGET |
 633              PIPE_BIND_DISPLAY_TARGET |
 634              PIPE_BIND_SCANOUT |
 635              PIPE_BIND_SHARED);
 636
 637         if (r300_is_blending_supported(r300_screen(screen), format)) {
 638             retval |= usage & PIPE_BIND_BLENDABLE;
 639         }
 640     }
 641
 642     /* Check depth-stencil format support. */
 643     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 644         r300_is_zs_format_supported(format)) {
 645         retval |= PIPE_BIND_DEPTH_STENCIL;
 646     }
 647
 648     /* Check vertex buffer format support. */
 649     if (usage & PIPE_BIND_VERTEX_BUFFER) {
 650         if (r300_screen(screen)->caps.has_tcl) {
 651             /* Half float is supported on >= R400. */
 652             if ((is_r400 || is_r500 || !is_half_float) &&
 653                 r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
 654                 retval |= PIPE_BIND_VERTEX_BUFFER;
 655             }
 656         } else {
 657             /* SW TCL */
 658             if (!util_format_is_pure_integer(format)) {
 659                 retval |= PIPE_BIND_VERTEX_BUFFER;
 660             }
 661         }
 662     }
 663
 664     /* Transfers are always supported. */
 665     if (usage & PIPE_BIND_TRANSFER_READ)
 666         retval |= PIPE_BIND_TRANSFER_READ;
 667     if (usage & PIPE_BIND_TRANSFER_WRITE)
 668         retval |= PIPE_BIND_TRANSFER_WRITE;
 669
 670     return retval == usage;
 671 }
 672
 673 static void r300_destroy_screen(struct pipe_screen* pscreen)
 674 {
 675     struct r300_screen* r300screen = r300_screen(pscreen);
 676     struct radeon_winsys *rws = radeon_winsys(pscreen);
 677
 678     if (rws && !rws->unref(rws))
 679       return;
 680
 681     pipe_mutex_destroy(r300screen->cmask_mutex);
 682
 683     if (rws)
 684       rws->destroy(rws);
 685
 686     FREE(r300screen);
 687 }
 688
 689 static void r300_fence_reference(struct pipe_screen *screen,
 690                                  struct pipe_fence_handle **ptr,
 691                                  struct pipe_fence_handle *fence)
 692 {
 693     struct radeon_winsys *rws = r300_screen(screen)->rws;
 694
 695     rws->fence_reference(ptr, fence);
 696 }
 697
 698 static boolean r300_fence_finish(struct pipe_screen *screen,
 699                                  struct pipe_fence_handle *fence,
 700                                  uint64_t timeout)
 701 {
 702     struct radeon_winsys *rws = r300_screen(screen)->rws;
 703
 704     return rws->fence_wait(rws, fence, timeout);
 705 }
 706
 707 struct pipe_screen* r300_screen_create(struct radeon_winsys *rws)
 708 {
 709     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 710
 711     if (!r300screen) {
 712         FREE(r300screen);
 713         return NULL;
 714     }
 715
 716     rws->query_info(rws, &r300screen->info);
 717
 718     r300_init_debug(r300screen);
 719     r300_parse_chipset(r300screen->info.pci_id, &r300screen->caps);
 720
 721     if (SCREEN_DBG_ON(r300screen, DBG_NO_ZMASK))
 722         r300screen->caps.zmask_ram = 0;
 723     if (SCREEN_DBG_ON(r300screen, DBG_NO_HIZ))
 724         r300screen->caps.hiz_ram = 0;
 725
 726     r300screen->rws = rws;
 727     r300screen->screen.destroy = r300_destroy_screen;
 728     r300screen->screen.get_name = r300_get_name;
 729     r300screen->screen.get_vendor = r300_get_vendor;
 730     r300screen->screen.get_device_vendor = r300_get_device_vendor;
 731     r300screen->screen.get_param = r300_get_param;
 732     r300screen->screen.get_shader_param = r300_get_shader_param;
 733     r300screen->screen.get_paramf = r300_get_paramf;
 734     r300screen->screen.get_video_param = r300_get_video_param;
 735     r300screen->screen.is_format_supported = r300_is_format_supported;
 736     r300screen->screen.is_video_format_supported = vl_video_buffer_is_format_supported;
 737     r300screen->screen.context_create = r300_create_context;
 738     r300screen->screen.fence_reference = r300_fence_reference;
 739     r300screen->screen.fence_finish = r300_fence_finish;
 740
 741     r300_init_screen_resource_functions(r300screen);
 742
 743     util_format_s3tc_init();
 744     pipe_mutex_init(r300screen->cmask_mutex);
 745
 746     return &r300screen->screen;
 747 }