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_MIXED_COLOR_DEPTH_BITS:
  99         case PIPE_CAP_TWO_SIDED_STENCIL:
 100         case PIPE_CAP_ANISOTROPIC_FILTER:
 101         case PIPE_CAP_POINT_SPRITE:
 102         case PIPE_CAP_OCCLUSION_QUERY:
 103         case PIPE_CAP_TEXTURE_SHADOW_MAP:
 104         case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 105         case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 106         case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 107         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 108         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 109         case PIPE_CAP_CONDITIONAL_RENDER:
 110         case PIPE_CAP_TEXTURE_BARRIER:
 111         case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 112         case PIPE_CAP_USER_INDEX_BUFFERS:
 113         case PIPE_CAP_USER_CONSTANT_BUFFERS:
 114         case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 115         case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 116         case PIPE_CAP_CLIP_HALFZ:
 117             return 1;
 118
 119         case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 120             return R300_BUFFER_ALIGNMENT;
 121
 122         case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 123             return 16;
 124
 125         case PIPE_CAP_GLSL_FEATURE_LEVEL:
 126             return 120;
 127
 128         /* r300 cannot do swizzling of compressed textures. Supported otherwise. */
 129         case PIPE_CAP_TEXTURE_SWIZZLE:
 130             return util_format_s3tc_enabled ? r300screen->caps.dxtc_swizzle : 1;
 131
 132         /* We don't support color clamping on r500, so that we can use color
 133          * intepolators for generic varyings. */
 134         case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 135             return !is_r500;
 136
 137         /* Supported on r500 only. */
 138         case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 139         case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 140         case PIPE_CAP_SM3:
 141             return is_r500 ? 1 : 0;
 142
 143         /* Unsupported features. */
 144         case PIPE_CAP_QUERY_TIME_ELAPSED:
 145         case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 146         case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 147         case PIPE_CAP_INDEP_BLEND_ENABLE:
 148         case PIPE_CAP_INDEP_BLEND_FUNC:
 149         case PIPE_CAP_DEPTH_CLIP_DISABLE:
 150         case PIPE_CAP_SHADER_STENCIL_EXPORT:
 151         case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 152         case PIPE_CAP_TGSI_INSTANCEID:
 153         case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 154         case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 155         case PIPE_CAP_SEAMLESS_CUBE_MAP:
 156         case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 157         case PIPE_CAP_MIN_TEXEL_OFFSET:
 158         case PIPE_CAP_MAX_TEXEL_OFFSET:
 159         case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 160         case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
 161         case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 162         case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 163         case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 164         case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 165         case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 166         case PIPE_CAP_MAX_VERTEX_STREAMS:
 167         case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 168         case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 169         case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 170         case PIPE_CAP_COMPUTE:
 171         case PIPE_CAP_START_INSTANCE:
 172         case PIPE_CAP_QUERY_TIMESTAMP:
 173         case PIPE_CAP_TEXTURE_MULTISAMPLE:
 174         case PIPE_CAP_CUBE_MAP_ARRAY:
 175         case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 176         case PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT:
 177         case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 178         case PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE:
 179         case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 180         case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 181         case PIPE_CAP_TEXTURE_GATHER_SM5:
 182         case PIPE_CAP_TEXTURE_QUERY_LOD:
 183         case PIPE_CAP_FAKE_SW_MSAA:
 184         case PIPE_CAP_SAMPLE_SHADING:
 185         case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 186         case PIPE_CAP_DRAW_INDIRECT:
 187         case PIPE_CAP_MULTI_DRAW_INDIRECT:
 188         case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
 189         case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 190         case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 191         case PIPE_CAP_SAMPLER_VIEW_TARGET:
 192         case PIPE_CAP_VERTEXID_NOBASE:
 193         case PIPE_CAP_POLYGON_OFFSET_CLAMP:
 194         case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
 195         case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
 196         case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
 197         case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
 198         case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
 199         case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
 200         case PIPE_CAP_DEPTH_BOUNDS_TEST:
 201         case PIPE_CAP_TGSI_TXQS:
 202         case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
 203         case PIPE_CAP_SHAREABLE_SHADERS:
 204         case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
 205         case PIPE_CAP_CLEAR_TEXTURE:
 206         case PIPE_CAP_DRAW_PARAMETERS:
 207         case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
 208         case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
 209         case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
 210         case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
 211         case PIPE_CAP_INVALIDATE_BUFFER:
 212         case PIPE_CAP_GENERATE_MIPMAP:
 213         case PIPE_CAP_STRING_MARKER:
 214         case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
 215         case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
 216         case PIPE_CAP_QUERY_BUFFER_OBJECT:
 217         case PIPE_CAP_QUERY_MEMORY_INFO:
 218         case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
 219         case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
 220         case PIPE_CAP_CULL_DISTANCE:
 221         case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
 222         case PIPE_CAP_TGSI_VOTE:
 223         case PIPE_CAP_MAX_WINDOW_RECTANGLES:
 224         case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
 225         case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
 226             return 0;
 227
 228         /* SWTCL-only features. */
 229         case PIPE_CAP_PRIMITIVE_RESTART:
 230         case PIPE_CAP_USER_VERTEX_BUFFERS:
 231         case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 232             return !r300screen->caps.has_tcl;
 233
 234         /* HWTCL-only features / limitations. */
 235         case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 236         case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 237         case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 238             return r300screen->caps.has_tcl;
 239         case PIPE_CAP_TGSI_TEXCOORD:
 240             return 0;
 241
 242         /* Texturing. */
 243         case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 244         case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 245         case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 246             /* 13 == 4096, 12 == 2048 */
 247             return is_r500 ? 13 : 12;
 248
 249         /* Render targets. */
 250         case PIPE_CAP_MAX_RENDER_TARGETS:
 251             return 4;
 252         case PIPE_CAP_ENDIANNESS:
 253             return PIPE_ENDIAN_LITTLE;
 254
 255         case PIPE_CAP_MAX_VIEWPORTS:
 256             return 1;
 257
 258         case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 259             return 2048;
 260
 261         case PIPE_CAP_VENDOR_ID:
 262                 return 0x1002;
 263         case PIPE_CAP_DEVICE_ID:
 264                 return r300screen->info.pci_id;
 265         case PIPE_CAP_ACCELERATED:
 266                 return 1;
 267         case PIPE_CAP_VIDEO_MEMORY:
 268                 return r300screen->info.vram_size >> 20;
 269         case PIPE_CAP_UMA:
 270                 return 0;
 271         case PIPE_CAP_PCI_GROUP:
 272             return r300screen->info.pci_domain;
 273         case PIPE_CAP_PCI_BUS:
 274             return r300screen->info.pci_bus;
 275         case PIPE_CAP_PCI_DEVICE:
 276             return r300screen->info.pci_dev;
 277         case PIPE_CAP_PCI_FUNCTION:
 278             return r300screen->info.pci_func;
 279     }
 280     return 0;
 281 }
 282
 283 static int r300_get_shader_param(struct pipe_screen *pscreen, unsigned shader, enum pipe_shader_cap param)
 284 {
 285    struct r300_screen* r300screen = r300_screen(pscreen);
 286    boolean is_r400 = r300screen->caps.is_r400;
 287    boolean is_r500 = r300screen->caps.is_r500;
 288
 289    switch (shader) {
 290     case PIPE_SHADER_FRAGMENT:
 291         switch (param)
 292         {
 293         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 294             return is_r500 || is_r400 ? 512 : 96;
 295         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 296             return is_r500 || is_r400 ? 512 : 64;
 297         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 298             return is_r500 || is_r400 ? 512 : 32;
 299         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 300             return is_r500 ? 511 : 4;
 301         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 302             return is_r500 ? 64 : 0; /* Actually unlimited on r500. */
 303             /* Fragment shader limits. */
 304         case PIPE_SHADER_CAP_MAX_INPUTS:
 305             /* 2 colors + 8 texcoords are always supported
 306              * (minus fog and wpos).
 307              *
 308              * R500 has the ability to turn 3rd and 4th color into
 309              * additional texcoords but there is no two-sided color
 310              * selection then. However the facing bit can be used instead. */
 311             return 10;
 312         case PIPE_SHADER_CAP_MAX_OUTPUTS:
 313             return 4;
 314         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 315             return (is_r500 ? 256 : 32) * sizeof(float[4]);
 316         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 317         case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
 318             return 1;
 319         case PIPE_SHADER_CAP_MAX_TEMPS:
 320             return is_r500 ? 128 : is_r400 ? 64 : 32;
 321         case PIPE_SHADER_CAP_MAX_PREDS:
 322             return 0; /* unused */
 323         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 324         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 325            return r300screen->caps.num_tex_units;
 326         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 327         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 328         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 329         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 330         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 331         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 332         case PIPE_SHADER_CAP_SUBROUTINES:
 333         case PIPE_SHADER_CAP_INTEGERS:
 334         case PIPE_SHADER_CAP_DOUBLES:
 335         case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
 336         case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
 337         case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
 338         case PIPE_SHADER_CAP_MAX_SHADER_BUFFERS:
 339         case PIPE_SHADER_CAP_MAX_SHADER_IMAGES:
 340             return 0;
 341         case PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT:
 342             return 32;
 343         case PIPE_SHADER_CAP_PREFERRED_IR:
 344             return PIPE_SHADER_IR_TGSI;
 345         case PIPE_SHADER_CAP_SUPPORTED_IRS:
 346             return 0;
 347         }
 348         break;
 349     case PIPE_SHADER_VERTEX:
 350         switch (param)
 351         {
 352         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 353         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 354         case PIPE_SHADER_CAP_SUBROUTINES:
 355             return 0;
 356         default:;
 357         }
 358
 359         if (!r300screen->caps.has_tcl) {
 360             return draw_get_shader_param(shader, param);
 361         }
 362
 363         switch (param)
 364         {
 365         case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 366         case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 367             return is_r500 ? 1024 : 256;
 368         case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 369             return is_r500 ? 4 : 0; /* For loops; not sure about conditionals. */
 370         case PIPE_SHADER_CAP_MAX_INPUTS:
 371             return 16;
 372         case PIPE_SHADER_CAP_MAX_OUTPUTS:
 373             return 10;
 374         case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 375             return 256 * sizeof(float[4]);
 376         case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 377             return 1;
 378         case PIPE_SHADER_CAP_MAX_TEMPS:
 379             return 32;
 380         case PIPE_SHADER_CAP_MAX_PREDS:
 381             return 0; /* unused */
 382         case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 383         case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
 384             return 1;
 385         case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 386         case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 387         case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 388         case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 389         case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 390         case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 391         case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 392         case PIPE_SHADER_CAP_SUBROUTINES:
 393         case PIPE_SHADER_CAP_INTEGERS:
 394         case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 395         case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 396         case PIPE_SHADER_CAP_DOUBLES:
 397         case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
 398         case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
 399         case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
 400         case PIPE_SHADER_CAP_MAX_SHADER_BUFFERS:
 401         case PIPE_SHADER_CAP_MAX_SHADER_IMAGES:
 402             return 0;
 403         case PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT:
 404             return 32;
 405         case PIPE_SHADER_CAP_PREFERRED_IR:
 406             return PIPE_SHADER_IR_TGSI;
 407         case PIPE_SHADER_CAP_SUPPORTED_IRS:
 408             return 0;
 409         }
 410         break;
 411     }
 412     return 0;
 413 }
 414
 415 static float r300_get_paramf(struct pipe_screen* pscreen,
 416                              enum pipe_capf param)
 417 {
 418     struct r300_screen* r300screen = r300_screen(pscreen);
 419
 420     switch (param) {
 421         case PIPE_CAPF_MAX_LINE_WIDTH:
 422         case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 423         case PIPE_CAPF_MAX_POINT_WIDTH:
 424         case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 425             /* The maximum dimensions of the colorbuffer are our practical
 426              * rendering limits. 2048 pixels should be enough for anybody. */
 427             if (r300screen->caps.is_r500) {
 428                 return 4096.0f;
 429             } else if (r300screen->caps.is_r400) {
 430                 return 4021.0f;
 431             } else {
 432                 return 2560.0f;
 433             }
 434         case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 435             return 16.0f;
 436         case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 437             return 16.0f;
 438         case PIPE_CAPF_GUARD_BAND_LEFT:
 439         case PIPE_CAPF_GUARD_BAND_TOP:
 440         case PIPE_CAPF_GUARD_BAND_RIGHT:
 441         case PIPE_CAPF_GUARD_BAND_BOTTOM:
 442             return 0.0f;
 443         default:
 444             debug_printf("r300: Warning: Unknown CAP %d in get_paramf.\n",
 445                          param);
 446             return 0.0f;
 447     }
 448 }
 449
 450 static int r300_get_video_param(struct pipe_screen *screen,
 451                                 enum pipe_video_profile profile,
 452                                 enum pipe_video_entrypoint entrypoint,
 453                                 enum pipe_video_cap param)
 454 {
 455    switch (param) {
 456       case PIPE_VIDEO_CAP_SUPPORTED:
 457          return vl_profile_supported(screen, profile, entrypoint);
 458       case PIPE_VIDEO_CAP_NPOT_TEXTURES:
 459          return 0;
 460       case PIPE_VIDEO_CAP_MAX_WIDTH:
 461       case PIPE_VIDEO_CAP_MAX_HEIGHT:
 462          return vl_video_buffer_max_size(screen);
 463       case PIPE_VIDEO_CAP_PREFERED_FORMAT:
 464          return PIPE_FORMAT_NV12;
 465       case PIPE_VIDEO_CAP_PREFERS_INTERLACED:
 466          return false;
 467       case PIPE_VIDEO_CAP_SUPPORTS_INTERLACED:
 468          return false;
 469       case PIPE_VIDEO_CAP_SUPPORTS_PROGRESSIVE:
 470          return true;
 471       case PIPE_VIDEO_CAP_MAX_LEVEL:
 472          return vl_level_supported(screen, profile);
 473       default:
 474          return 0;
 475    }
 476 }
 477
 478 /**
 479  * Whether the format matches:
 480  *   PIPE_FORMAT_?10?10?10?2_UNORM
 481  */
 482 static inline boolean
 483 util_format_is_rgba1010102_variant(const struct util_format_description *desc)
 484 {
 485    static const unsigned size[4] = {10, 10, 10, 2};
 486    unsigned chan;
 487
 488    if (desc->block.width != 1 ||
 489        desc->block.height != 1 ||
 490        desc->block.bits != 32)
 491       return FALSE;
 492
 493    for (chan = 0; chan < 4; ++chan) {
 494       if(desc->channel[chan].type != UTIL_FORMAT_TYPE_UNSIGNED &&
 495          desc->channel[chan].type != UTIL_FORMAT_TYPE_VOID)
 496          return FALSE;
 497       if (desc->channel[chan].size != size[chan])
 498          return FALSE;
 499    }
 500
 501    return TRUE;
 502 }
 503
 504 static bool r300_is_blending_supported(struct r300_screen *rscreen,
 505                                        enum pipe_format format)
 506 {
 507     int c;
 508     const struct util_format_description *desc =
 509         util_format_description(format);
 510
 511     if (desc->layout != UTIL_FORMAT_LAYOUT_PLAIN)
 512         return false;
 513
 514     c = util_format_get_first_non_void_channel(format);
 515
 516     /* RGBA16F */
 517     if (rscreen->caps.is_r500 &&
 518         desc->nr_channels == 4 &&
 519         desc->channel[c].size == 16 &&
 520         desc->channel[c].type == UTIL_FORMAT_TYPE_FLOAT)
 521         return true;
 522
 523     if (desc->channel[c].normalized &&
 524         desc->channel[c].type == UTIL_FORMAT_TYPE_UNSIGNED &&
 525         desc->channel[c].size >= 4 &&
 526         desc->channel[c].size <= 10) {
 527         /* RGB10_A2, RGBA8, RGB5_A1, RGBA4, RGB565 */
 528         if (desc->nr_channels >= 3)
 529             return true;
 530
 531         if (format == PIPE_FORMAT_R8G8_UNORM)
 532             return true;
 533
 534         /* R8, I8, L8, A8 */
 535         if (desc->nr_channels == 1)
 536             return true;
 537     }
 538
 539     return false;
 540 }
 541
 542 static boolean r300_is_format_supported(struct pipe_screen* screen,
 543                                         enum pipe_format format,
 544                                         enum pipe_texture_target target,
 545                                         unsigned sample_count,
 546                                         unsigned usage)
 547 {
 548     uint32_t retval = 0;
 549     boolean is_r500 = r300_screen(screen)->caps.is_r500;
 550     boolean is_r400 = r300_screen(screen)->caps.is_r400;
 551     boolean is_color2101010 = format == PIPE_FORMAT_R10G10B10A2_UNORM ||
 552                               format == PIPE_FORMAT_R10G10B10X2_SNORM ||
 553                               format == PIPE_FORMAT_B10G10R10A2_UNORM ||
 554                               format == PIPE_FORMAT_B10G10R10X2_UNORM ||
 555                               format == PIPE_FORMAT_R10SG10SB10SA2U_NORM;
 556     boolean is_ati1n = format == PIPE_FORMAT_RGTC1_UNORM ||
 557                        format == PIPE_FORMAT_RGTC1_SNORM ||
 558                        format == PIPE_FORMAT_LATC1_UNORM ||
 559                        format == PIPE_FORMAT_LATC1_SNORM;
 560     boolean is_ati2n = format == PIPE_FORMAT_RGTC2_UNORM ||
 561                        format == PIPE_FORMAT_RGTC2_SNORM ||
 562                        format == PIPE_FORMAT_LATC2_UNORM ||
 563                        format == PIPE_FORMAT_LATC2_SNORM;
 564     boolean is_half_float = format == PIPE_FORMAT_R16_FLOAT ||
 565                             format == PIPE_FORMAT_R16G16_FLOAT ||
 566                             format == PIPE_FORMAT_R16G16B16_FLOAT ||
 567                             format == PIPE_FORMAT_R16G16B16A16_FLOAT ||
 568                             format == PIPE_FORMAT_R16G16B16X16_FLOAT;
 569     const struct util_format_description *desc;
 570
 571     if (!util_format_is_supported(format, usage))
 572        return FALSE;
 573
 574     /* Check multisampling support. */
 575     switch (sample_count) {
 576         case 0:
 577         case 1:
 578             break;
 579         case 2:
 580         case 4:
 581         case 6:
 582             /* No texturing and scanout. */
 583             if (usage & (PIPE_BIND_SAMPLER_VIEW |
 584                          PIPE_BIND_DISPLAY_TARGET |
 585                          PIPE_BIND_SCANOUT)) {
 586                 return FALSE;
 587             }
 588
 589             desc = util_format_description(format);
 590
 591             if (is_r500) {
 592                 /* Only allow depth/stencil, RGBA8, RGBA1010102, RGBA16F. */
 593                 if (!util_format_is_depth_or_stencil(format) &&
 594                     !util_format_is_rgba8_variant(desc) &&
 595                     !util_format_is_rgba1010102_variant(desc) &&
 596                     format != PIPE_FORMAT_R16G16B16A16_FLOAT &&
 597                     format != PIPE_FORMAT_R16G16B16X16_FLOAT) {
 598                     return FALSE;
 599                 }
 600             } else {
 601                 /* Only allow depth/stencil, RGBA8. */
 602                 if (!util_format_is_depth_or_stencil(format) &&
 603                     !util_format_is_rgba8_variant(desc)) {
 604                     return FALSE;
 605                 }
 606             }
 607             break;
 608         default:
 609             return FALSE;
 610     }
 611
 612     /* Check sampler format support. */
 613     if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
 614         /* these two are broken for an unknown reason */
 615         format != PIPE_FORMAT_R8G8B8X8_SNORM &&
 616         format != PIPE_FORMAT_R16G16B16X16_SNORM &&
 617         /* ATI1N is r5xx-only. */
 618         (is_r500 || !is_ati1n) &&
 619         /* ATI2N is supported on r4xx-r5xx. */
 620         (is_r400 || is_r500 || !is_ati2n) &&
 621         r300_is_sampler_format_supported(format)) {
 622         retval |= PIPE_BIND_SAMPLER_VIEW;
 623     }
 624
 625     /* Check colorbuffer format support. */
 626     if ((usage & (PIPE_BIND_RENDER_TARGET |
 627                   PIPE_BIND_DISPLAY_TARGET |
 628                   PIPE_BIND_SCANOUT |
 629                   PIPE_BIND_SHARED |
 630                   PIPE_BIND_BLENDABLE)) &&
 631         /* 2101010 cannot be rendered to on non-r5xx. */
 632         (!is_color2101010 || is_r500) &&
 633         r300_is_colorbuffer_format_supported(format)) {
 634         retval |= usage &
 635             (PIPE_BIND_RENDER_TARGET |
 636              PIPE_BIND_DISPLAY_TARGET |
 637              PIPE_BIND_SCANOUT |
 638              PIPE_BIND_SHARED);
 639
 640         if (r300_is_blending_supported(r300_screen(screen), format)) {
 641             retval |= usage & PIPE_BIND_BLENDABLE;
 642         }
 643     }
 644
 645     /* Check depth-stencil format support. */
 646     if (usage & PIPE_BIND_DEPTH_STENCIL &&
 647         r300_is_zs_format_supported(format)) {
 648         retval |= PIPE_BIND_DEPTH_STENCIL;
 649     }
 650
 651     /* Check vertex buffer format support. */
 652     if (usage & PIPE_BIND_VERTEX_BUFFER) {
 653         if (r300_screen(screen)->caps.has_tcl) {
 654             /* Half float is supported on >= R400. */
 655             if ((is_r400 || is_r500 || !is_half_float) &&
 656                 r300_translate_vertex_data_type(format) != R300_INVALID_FORMAT) {
 657                 retval |= PIPE_BIND_VERTEX_BUFFER;
 658             }
 659         } else {
 660             /* SW TCL */
 661             if (!util_format_is_pure_integer(format)) {
 662                 retval |= PIPE_BIND_VERTEX_BUFFER;
 663             }
 664         }
 665     }
 666
 667     /* Transfers are always supported. */
 668     if (usage & PIPE_BIND_TRANSFER_READ)
 669         retval |= PIPE_BIND_TRANSFER_READ;
 670     if (usage & PIPE_BIND_TRANSFER_WRITE)
 671         retval |= PIPE_BIND_TRANSFER_WRITE;
 672
 673     return retval == usage;
 674 }
 675
 676 static void r300_destroy_screen(struct pipe_screen* pscreen)
 677 {
 678     struct r300_screen* r300screen = r300_screen(pscreen);
 679     struct radeon_winsys *rws = radeon_winsys(pscreen);
 680
 681     if (rws && !rws->unref(rws))
 682       return;
 683
 684     pipe_mutex_destroy(r300screen->cmask_mutex);
 685
 686     if (rws)
 687       rws->destroy(rws);
 688
 689     FREE(r300screen);
 690 }
 691
 692 static void r300_fence_reference(struct pipe_screen *screen,
 693                                  struct pipe_fence_handle **ptr,
 694                                  struct pipe_fence_handle *fence)
 695 {
 696     struct radeon_winsys *rws = r300_screen(screen)->rws;
 697
 698     rws->fence_reference(ptr, fence);
 699 }
 700
 701 static boolean r300_fence_finish(struct pipe_screen *screen,
 702                                  struct pipe_context *ctx,
 703                                  struct pipe_fence_handle *fence,
 704                                  uint64_t timeout)
 705 {
 706     struct radeon_winsys *rws = r300_screen(screen)->rws;
 707
 708     return rws->fence_wait(rws, fence, timeout);
 709 }
 710
 711 struct pipe_screen* r300_screen_create(struct radeon_winsys *rws)
 712 {
 713     struct r300_screen *r300screen = CALLOC_STRUCT(r300_screen);
 714
 715     if (!r300screen) {
 716         FREE(r300screen);
 717         return NULL;
 718     }
 719
 720     rws->query_info(rws, &r300screen->info);
 721
 722     r300_init_debug(r300screen);
 723     r300_parse_chipset(r300screen->info.pci_id, &r300screen->caps);
 724
 725     if (SCREEN_DBG_ON(r300screen, DBG_NO_ZMASK))
 726         r300screen->caps.zmask_ram = 0;
 727     if (SCREEN_DBG_ON(r300screen, DBG_NO_HIZ))
 728         r300screen->caps.hiz_ram = 0;
 729
 730     r300screen->rws = rws;
 731     r300screen->screen.destroy = r300_destroy_screen;
 732     r300screen->screen.get_name = r300_get_name;
 733     r300screen->screen.get_vendor = r300_get_vendor;
 734     r300screen->screen.get_device_vendor = r300_get_device_vendor;
 735     r300screen->screen.get_param = r300_get_param;
 736     r300screen->screen.get_shader_param = r300_get_shader_param;
 737     r300screen->screen.get_paramf = r300_get_paramf;
 738     r300screen->screen.get_video_param = r300_get_video_param;
 739     r300screen->screen.is_format_supported = r300_is_format_supported;
 740     r300screen->screen.is_video_format_supported = vl_video_buffer_is_format_supported;
 741     r300screen->screen.context_create = r300_create_context;
 742     r300screen->screen.fence_reference = r300_fence_reference;
 743     r300screen->screen.fence_finish = r300_fence_finish;
 744
 745     r300_init_screen_resource_functions(r300screen);
 746
 747     util_format_s3tc_init();
 748     pipe_mutex_init(r300screen->cmask_mutex);
 749
 750     return &r300screen->screen;
 751 }