src/gallium/drivers/i915/i915_screen.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #include "draw/draw_context.h"
  30 #include "os/os_misc.h"
  31 #include "util/u_format.h"
  32 #include "util/u_format_s3tc.h"
  33 #include "util/u_inlines.h"
  34 #include "util/u_memory.h"
  35 #include "util/u_string.h"
  36
  37 #include "i915_reg.h"
  38 #include "i915_debug.h"
  39 #include "i915_context.h"
  40 #include "i915_screen.h"
  41 #include "i915_resource.h"
  42 #include "i915_winsys.h"
  43 #include "i915_public.h"
  44
  45
  46 /*
  47  * Probe functions
  48  */
  49
  50
  51 static const char *
  52 i915_get_vendor(struct pipe_screen *screen)
  53 {
  54    return "Mesa Project";
  55 }
  56
  57 static const char *
  58 i915_get_device_vendor(struct pipe_screen *screen)
  59 {
  60    return "Intel";
  61 }
  62
  63 static const char *
  64 i915_get_name(struct pipe_screen *screen)
  65 {
  66    static char buffer[128];
  67    const char *chipset;
  68
  69    switch (i915_screen(screen)->iws->pci_id) {
  70    case PCI_CHIP_I915_G:
  71       chipset = "915G";
  72       break;
  73    case PCI_CHIP_I915_GM:
  74       chipset = "915GM";
  75       break;
  76    case PCI_CHIP_I945_G:
  77       chipset = "945G";
  78       break;
  79    case PCI_CHIP_I945_GM:
  80       chipset = "945GM";
  81       break;
  82    case PCI_CHIP_I945_GME:
  83       chipset = "945GME";
  84       break;
  85    case PCI_CHIP_G33_G:
  86       chipset = "G33";
  87       break;
  88    case PCI_CHIP_Q35_G:
  89       chipset = "Q35";
  90       break;
  91    case PCI_CHIP_Q33_G:
  92       chipset = "Q33";
  93       break;
  94    case PCI_CHIP_PINEVIEW_G:
  95       chipset = "Pineview G";
  96       break;
  97    case PCI_CHIP_PINEVIEW_M:
  98       chipset = "Pineview M";
  99       break;
 100    default:
 101       chipset = "unknown";
 102       break;
 103    }
 104
 105    util_snprintf(buffer, sizeof(buffer), "i915 (chipset: %s)", chipset);
 106    return buffer;
 107 }
 108
 109 static int
 110 i915_get_shader_param(struct pipe_screen *screen,
 111                       enum pipe_shader_type shader,
 112                       enum pipe_shader_cap cap)
 113 {
 114    switch(shader) {
 115    case PIPE_SHADER_VERTEX:
 116       switch (cap) {
 117       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 118       case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 119          if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
 120             return PIPE_MAX_SAMPLERS;
 121          else
 122             return 0;
 123        default:
 124          return draw_get_shader_param(shader, cap);
 125       }
 126    case PIPE_SHADER_FRAGMENT:
 127       /* XXX: some of these are just shader model 2.0 values, fix this! */
 128       switch(cap) {
 129       case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 130          return I915_MAX_ALU_INSN + I915_MAX_TEX_INSN;
 131       case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 132          return I915_MAX_ALU_INSN;
 133       case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 134          return I915_MAX_TEX_INSN;
 135       case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 136          return 8;
 137       case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 138          return 0;
 139       case PIPE_SHADER_CAP_MAX_INPUTS:
 140          return 10;
 141       case PIPE_SHADER_CAP_MAX_OUTPUTS:
 142          return 1;
 143       case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 144          return 32 * sizeof(float[4]);
 145       case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 146          return 1;
 147       case PIPE_SHADER_CAP_MAX_TEMPS:
 148          return 12; /* XXX: 12 -> 32 ? */
 149       case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 150       case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 151          return 0;
 152       case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 153       case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 154       case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 155       case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 156          return 1;
 157       case PIPE_SHADER_CAP_SUBROUTINES:
 158          return 0;
 159       case PIPE_SHADER_CAP_INTEGERS:
 160          return 0;
 161       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 162       case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 163          return I915_TEX_UNITS;
 164       case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
 165       case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
 166       case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
 167       case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
 168          return 0;
 169       case PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT:
 170          return 32;
 171       default:
 172          debug_printf("%s: Unknown cap %u.\n", __FUNCTION__, cap);
 173          return 0;
 174       }
 175       break;
 176    default:
 177       return 0;
 178    }
 179
 180 }
 181
 182 static int
 183 i915_get_param(struct pipe_screen *screen, enum pipe_cap cap)
 184 {
 185    struct i915_screen *is = i915_screen(screen);
 186
 187    switch (cap) {
 188    /* Supported features (boolean caps). */
 189    case PIPE_CAP_ANISOTROPIC_FILTER:
 190    case PIPE_CAP_NPOT_TEXTURES:
 191    case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
 192    case PIPE_CAP_POINT_SPRITE:
 193    case PIPE_CAP_PRIMITIVE_RESTART: /* draw module */
 194    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 195    case PIPE_CAP_TWO_SIDED_STENCIL:
 196    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 197    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 198    case PIPE_CAP_TGSI_INSTANCEID:
 199    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 200    case PIPE_CAP_USER_VERTEX_BUFFERS:
 201    case PIPE_CAP_USER_CONSTANT_BUFFERS:
 202    case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
 203       return 1;
 204
 205    /* Unsupported features (boolean caps). */
 206    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 207    case PIPE_CAP_DEPTH_CLIP_DISABLE:
 208    case PIPE_CAP_INDEP_BLEND_ENABLE:
 209    case PIPE_CAP_INDEP_BLEND_FUNC:
 210    case PIPE_CAP_SHADER_STENCIL_EXPORT:
 211    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 212    case PIPE_CAP_TEXTURE_SWIZZLE:
 213    case PIPE_CAP_QUERY_TIME_ELAPSED:
 214    case PIPE_CAP_SM3:
 215    case PIPE_CAP_SEAMLESS_CUBE_MAP:
 216    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 217    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 218    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 219    case PIPE_CAP_CONDITIONAL_RENDER:
 220    case PIPE_CAP_TEXTURE_BARRIER:
 221    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 222    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 223    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 224    case PIPE_CAP_START_INSTANCE:
 225    case PIPE_CAP_QUERY_TIMESTAMP:
 226    case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 227    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 228    case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 229    case PIPE_CAP_CUBE_MAP_ARRAY:
 230    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 231    case PIPE_CAP_TGSI_TEXCOORD:
 232    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 233    case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 234    case PIPE_CAP_TEXTURE_GATHER_SM5:
 235    case PIPE_CAP_FAKE_SW_MSAA:
 236    case PIPE_CAP_TEXTURE_QUERY_LOD:
 237    case PIPE_CAP_SAMPLE_SHADING:
 238    case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 239    case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 240    case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 241    case PIPE_CAP_CLIP_HALFZ:
 242    case PIPE_CAP_VERTEXID_NOBASE:
 243    case PIPE_CAP_POLYGON_OFFSET_CLAMP:
 244    case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
 245    case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
 246    case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
 247    case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
 248    case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
 249    case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
 250    case PIPE_CAP_DEPTH_BOUNDS_TEST:
 251    case PIPE_CAP_TGSI_TXQS:
 252    case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
 253    case PIPE_CAP_SHAREABLE_SHADERS:
 254    case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
 255    case PIPE_CAP_CLEAR_TEXTURE:
 256    case PIPE_CAP_DRAW_PARAMETERS:
 257    case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
 258    case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
 259    case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
 260    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
 261    case PIPE_CAP_INVALIDATE_BUFFER:
 262    case PIPE_CAP_GENERATE_MIPMAP:
 263    case PIPE_CAP_STRING_MARKER:
 264    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
 265    case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
 266    case PIPE_CAP_QUERY_MEMORY_INFO:
 267    case PIPE_CAP_PCI_GROUP:
 268    case PIPE_CAP_PCI_BUS:
 269    case PIPE_CAP_PCI_DEVICE:
 270    case PIPE_CAP_PCI_FUNCTION:
 271    case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
 272    case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
 273    case PIPE_CAP_CULL_DISTANCE:
 274    case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
 275    case PIPE_CAP_TGSI_VOTE:
 276    case PIPE_CAP_MAX_WINDOW_RECTANGLES:
 277    case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
 278    case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
 279    case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
 280       return 0;
 281
 282    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 283    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 284    case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
 285    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 286    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 287    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 288    case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 289    case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 290    case PIPE_CAP_DRAW_INDIRECT:
 291    case PIPE_CAP_MULTI_DRAW_INDIRECT:
 292    case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
 293    case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 294    case PIPE_CAP_SAMPLER_VIEW_TARGET:
 295    case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
 296    case PIPE_CAP_TGSI_CAN_READ_OUTPUTS:
 297    case PIPE_CAP_NATIVE_FENCE_FD:
 298    case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
 299    case PIPE_CAP_TGSI_FS_FBFETCH:
 300    case PIPE_CAP_TGSI_MUL_ZERO_WINS:
 301    case PIPE_CAP_DOUBLES:
 302    case PIPE_CAP_INT64:
 303    case PIPE_CAP_INT64_DIVMOD:
 304    case PIPE_CAP_TGSI_TEX_TXF_LZ:
 305    case PIPE_CAP_TGSI_CLOCK:
 306       return 0;
 307
 308    case PIPE_CAP_MAX_VIEWPORTS:
 309       return 1;
 310
 311    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 312       return 64;
 313
 314    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 315       return 120;
 316
 317    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 318       return 16;
 319
 320    /* Features we can lie about (boolean caps). */
 321    case PIPE_CAP_OCCLUSION_QUERY:
 322       return is->debug.lie ? 1 : 0;
 323
 324    /* Texturing. */
 325    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 326       return I915_MAX_TEXTURE_2D_LEVELS;
 327    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 328       return I915_MAX_TEXTURE_3D_LEVELS;
 329    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 330       return I915_MAX_TEXTURE_2D_LEVELS;
 331    case PIPE_CAP_MIN_TEXEL_OFFSET:
 332    case PIPE_CAP_MAX_TEXEL_OFFSET:
 333    case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 334    case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
 335    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 336    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 337    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 338       return 0;
 339
 340    /* Render targets. */
 341    case PIPE_CAP_MAX_RENDER_TARGETS:
 342       return 1;
 343
 344    /* Geometry shader output, unsupported. */
 345    case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 346    case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 347    case PIPE_CAP_MAX_VERTEX_STREAMS:
 348       return 0;
 349
 350    case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 351       return 2048;
 352
 353    /* Fragment coordinate conventions. */
 354    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 355    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 356       return 1;
 357    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 358    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 359       return 0;
 360    case PIPE_CAP_ENDIANNESS:
 361       return PIPE_ENDIAN_LITTLE;
 362
 363    case PIPE_CAP_VENDOR_ID:
 364       return 0x8086;
 365    case PIPE_CAP_DEVICE_ID:
 366       return is->iws->pci_id;
 367    case PIPE_CAP_ACCELERATED:
 368       return 1;
 369    case PIPE_CAP_VIDEO_MEMORY: {
 370       /* Once a batch uses more than 75% of the maximum mappable size, we
 371        * assume that there's some fragmentation, and we start doing extra
 372        * flushing, etc.  That's the big cliff apps will care about.
 373        */
 374       const int gpu_mappable_megabytes = is->iws->aperture_size(is->iws) * 3 / 4;
 375       uint64_t system_memory;
 376
 377       if (!os_get_total_physical_memory(&system_memory))
 378          return 0;
 379
 380       return MIN2(gpu_mappable_megabytes, (int)(system_memory >> 20));
 381    }
 382    case PIPE_CAP_UMA:
 383       return 1;
 384
 385    default:
 386       debug_printf("%s: Unknown cap %u.\n", __FUNCTION__, cap);
 387       return 0;
 388    }
 389 }
 390
 391 static float
 392 i915_get_paramf(struct pipe_screen *screen, enum pipe_capf cap)
 393 {
 394    switch(cap) {
 395    case PIPE_CAPF_MAX_LINE_WIDTH:
 396       /* fall-through */
 397    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 398       return 7.5;
 399
 400    case PIPE_CAPF_MAX_POINT_WIDTH:
 401       /* fall-through */
 402    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 403       return 255.0;
 404
 405    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 406       return 4.0;
 407
 408    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 409       return 16.0;
 410
 411    default:
 412       debug_printf("%s: Unknown cap %u.\n", __FUNCTION__, cap);
 413       return 0;
 414    }
 415 }
 416
 417 boolean
 418 i915_is_format_supported(struct pipe_screen *screen,
 419                          enum pipe_format format,
 420                          enum pipe_texture_target target,
 421                          unsigned sample_count,
 422                          unsigned tex_usage)
 423 {
 424    static const enum pipe_format tex_supported[] = {
 425       PIPE_FORMAT_B8G8R8A8_UNORM,
 426       PIPE_FORMAT_B8G8R8A8_SRGB,
 427       PIPE_FORMAT_B8G8R8X8_UNORM,
 428       PIPE_FORMAT_R8G8B8A8_UNORM,
 429       PIPE_FORMAT_R8G8B8X8_UNORM,
 430       PIPE_FORMAT_B4G4R4A4_UNORM,
 431       PIPE_FORMAT_B5G6R5_UNORM,
 432       PIPE_FORMAT_B5G5R5A1_UNORM,
 433       PIPE_FORMAT_B10G10R10A2_UNORM,
 434       PIPE_FORMAT_L8_UNORM,
 435       PIPE_FORMAT_A8_UNORM,
 436       PIPE_FORMAT_I8_UNORM,
 437       PIPE_FORMAT_L8A8_UNORM,
 438       PIPE_FORMAT_UYVY,
 439       PIPE_FORMAT_YUYV,
 440       /* XXX why not?
 441       PIPE_FORMAT_Z16_UNORM, */
 442       PIPE_FORMAT_DXT1_RGB,
 443       PIPE_FORMAT_DXT1_RGBA,
 444       PIPE_FORMAT_DXT3_RGBA,
 445       PIPE_FORMAT_DXT5_RGBA,
 446       PIPE_FORMAT_Z24X8_UNORM,
 447       PIPE_FORMAT_Z24_UNORM_S8_UINT,
 448       PIPE_FORMAT_NONE  /* list terminator */
 449    };
 450    static const enum pipe_format render_supported[] = {
 451       PIPE_FORMAT_B8G8R8A8_UNORM,
 452       PIPE_FORMAT_B8G8R8X8_UNORM,
 453       PIPE_FORMAT_R8G8B8A8_UNORM,
 454       PIPE_FORMAT_R8G8B8X8_UNORM,
 455       PIPE_FORMAT_B5G6R5_UNORM,
 456       PIPE_FORMAT_B5G5R5A1_UNORM,
 457       PIPE_FORMAT_B4G4R4A4_UNORM,
 458       PIPE_FORMAT_B10G10R10A2_UNORM,
 459       PIPE_FORMAT_L8_UNORM,
 460       PIPE_FORMAT_A8_UNORM,
 461       PIPE_FORMAT_I8_UNORM,
 462       PIPE_FORMAT_NONE  /* list terminator */
 463    };
 464    static const enum pipe_format depth_supported[] = {
 465       /* XXX why not?
 466       PIPE_FORMAT_Z16_UNORM, */
 467       PIPE_FORMAT_Z24X8_UNORM,
 468       PIPE_FORMAT_Z24_UNORM_S8_UINT,
 469       PIPE_FORMAT_NONE  /* list terminator */
 470    };
 471    const enum pipe_format *list;
 472    uint i;
 473
 474    if (!util_format_is_supported(format, tex_usage))
 475       return FALSE;
 476
 477    if (sample_count > 1)
 478       return FALSE;
 479
 480    if(tex_usage & PIPE_BIND_DEPTH_STENCIL)
 481       list = depth_supported;
 482    else if (tex_usage & PIPE_BIND_RENDER_TARGET)
 483       list = render_supported;
 484    else if (tex_usage & PIPE_BIND_SAMPLER_VIEW)
 485       list = tex_supported;
 486    else
 487       return TRUE; /* PIPE_BIND_{VERTEX,INDEX}_BUFFER */
 488
 489    for (i = 0; list[i] != PIPE_FORMAT_NONE; i++) {
 490       if (list[i] == format)
 491          return TRUE;
 492    }
 493
 494    return FALSE;
 495 }
 496
 497
 498 /*
 499  * Fence functions
 500  */
 501
 502
 503 static void
 504 i915_fence_reference(struct pipe_screen *screen,
 505                      struct pipe_fence_handle **ptr,
 506                      struct pipe_fence_handle *fence)
 507 {
 508    struct i915_screen *is = i915_screen(screen);
 509
 510    is->iws->fence_reference(is->iws, ptr, fence);
 511 }
 512
 513 static boolean
 514 i915_fence_finish(struct pipe_screen *screen,
 515                   struct pipe_context *ctx,
 516                   struct pipe_fence_handle *fence,
 517                   uint64_t timeout)
 518 {
 519    struct i915_screen *is = i915_screen(screen);
 520
 521    if (!timeout)
 522       return is->iws->fence_signalled(is->iws, fence) == 1;
 523
 524    return is->iws->fence_finish(is->iws, fence) == 1;
 525 }
 526
 527
 528 /*
 529  * Generic functions
 530  */
 531
 532
 533 static void
 534 i915_flush_frontbuffer(struct pipe_screen *screen,
 535                        struct pipe_resource *resource,
 536                        unsigned level, unsigned layer,
 537                        void *winsys_drawable_handle,
 538                        struct pipe_box *sub_box)
 539 {
 540    /* XXX: Dummy right now. */
 541    (void)screen;
 542    (void)resource;
 543    (void)level;
 544    (void)layer;
 545    (void)winsys_drawable_handle;
 546    (void)sub_box;
 547 }
 548
 549 static void
 550 i915_destroy_screen(struct pipe_screen *screen)
 551 {
 552    struct i915_screen *is = i915_screen(screen);
 553
 554    if (is->iws)
 555       is->iws->destroy(is->iws);
 556
 557    FREE(is);
 558 }
 559
 560 /**
 561  * Create a new i915_screen object
 562  */
 563 struct pipe_screen *
 564 i915_screen_create(struct i915_winsys *iws)
 565 {
 566    struct i915_screen *is = CALLOC_STRUCT(i915_screen);
 567
 568    if (!is)
 569       return NULL;
 570
 571    switch (iws->pci_id) {
 572    case PCI_CHIP_I915_G:
 573    case PCI_CHIP_I915_GM:
 574       is->is_i945 = FALSE;
 575       break;
 576
 577    case PCI_CHIP_I945_G:
 578    case PCI_CHIP_I945_GM:
 579    case PCI_CHIP_I945_GME:
 580    case PCI_CHIP_G33_G:
 581    case PCI_CHIP_Q33_G:
 582    case PCI_CHIP_Q35_G:
 583    case PCI_CHIP_PINEVIEW_G:
 584    case PCI_CHIP_PINEVIEW_M:
 585       is->is_i945 = TRUE;
 586       break;
 587
 588    default:
 589       debug_printf("%s: unknown pci id 0x%x, cannot create screen\n",
 590                    __FUNCTION__, iws->pci_id);
 591       FREE(is);
 592       return NULL;
 593    }
 594
 595    is->iws = iws;
 596
 597    is->base.destroy = i915_destroy_screen;
 598    is->base.flush_frontbuffer = i915_flush_frontbuffer;
 599
 600    is->base.get_name = i915_get_name;
 601    is->base.get_vendor = i915_get_vendor;
 602    is->base.get_device_vendor = i915_get_device_vendor;
 603    is->base.get_param = i915_get_param;
 604    is->base.get_shader_param = i915_get_shader_param;
 605    is->base.get_paramf = i915_get_paramf;
 606    is->base.is_format_supported = i915_is_format_supported;
 607
 608    is->base.context_create = i915_create_context;
 609
 610    is->base.fence_reference = i915_fence_reference;
 611    is->base.fence_finish = i915_fence_finish;
 612
 613    i915_init_screen_resource_functions(is);
 614
 615    i915_debug_init(is);
 616
 617    util_format_s3tc_init();
 618
 619    return &is->base;
 620 }