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 "util/os_misc.h"
  31 #include "util/format/u_format.h"
  32 #include "util/format/u_format_s3tc.h"
  33 #include "util/u_inlines.h"
  34 #include "util/u_memory.h"
  35 #include "util/u_screen.h"
  36 #include "util/u_string.h"
  37
  38 #include "i915_reg.h"
  39 #include "i915_debug.h"
  40 #include "i915_context.h"
  41 #include "i915_screen.h"
  42 #include "i915_resource.h"
  43 #include "i915_winsys.h"
  44 #include "i915_public.h"
  45
  46
  47 /*
  48  * Probe functions
  49  */
  50
  51
  52 static const char *
  53 i915_get_vendor(struct pipe_screen *screen)
  54 {
  55    return "Mesa Project";
  56 }
  57
  58 static const char *
  59 i915_get_device_vendor(struct pipe_screen *screen)
  60 {
  61    return "Intel";
  62 }
  63
  64 static const char *
  65 i915_get_name(struct pipe_screen *screen)
  66 {
  67    static char buffer[128];
  68    const char *chipset;
  69
  70    switch (i915_screen(screen)->iws->pci_id) {
  71    case PCI_CHIP_I915_G:
  72       chipset = "915G";
  73       break;
  74    case PCI_CHIP_I915_GM:
  75       chipset = "915GM";
  76       break;
  77    case PCI_CHIP_I945_G:
  78       chipset = "945G";
  79       break;
  80    case PCI_CHIP_I945_GM:
  81       chipset = "945GM";
  82       break;
  83    case PCI_CHIP_I945_GME:
  84       chipset = "945GME";
  85       break;
  86    case PCI_CHIP_G33_G:
  87       chipset = "G33";
  88       break;
  89    case PCI_CHIP_Q35_G:
  90       chipset = "Q35";
  91       break;
  92    case PCI_CHIP_Q33_G:
  93       chipset = "Q33";
  94       break;
  95    case PCI_CHIP_PINEVIEW_G:
  96       chipset = "Pineview G";
  97       break;
  98    case PCI_CHIP_PINEVIEW_M:
  99       chipset = "Pineview M";
 100       break;
 101    default:
 102       chipset = "unknown";
 103       break;
 104    }
 105
 106    snprintf(buffer, sizeof(buffer), "i915 (chipset: %s)", chipset);
 107    return buffer;
 108 }
 109
 110 static int
 111 i915_get_shader_param(struct pipe_screen *screen,
 112                       enum pipe_shader_type shader,
 113                       enum pipe_shader_cap cap)
 114 {
 115    switch(shader) {
 116    case PIPE_SHADER_VERTEX:
 117       switch (cap) {
 118       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 119       case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 120          if (debug_get_bool_option("DRAW_USE_LLVM", TRUE))
 121             return PIPE_MAX_SAMPLERS;
 122          else
 123             return 0;
 124        default:
 125          return draw_get_shader_param(shader, cap);
 126       }
 127    case PIPE_SHADER_FRAGMENT:
 128       /* XXX: some of these are just shader model 2.0 values, fix this! */
 129       switch(cap) {
 130       case PIPE_SHADER_CAP_MAX_INSTRUCTIONS:
 131          return I915_MAX_ALU_INSN + I915_MAX_TEX_INSN;
 132       case PIPE_SHADER_CAP_MAX_ALU_INSTRUCTIONS:
 133          return I915_MAX_ALU_INSN;
 134       case PIPE_SHADER_CAP_MAX_TEX_INSTRUCTIONS:
 135          return I915_MAX_TEX_INSN;
 136       case PIPE_SHADER_CAP_MAX_TEX_INDIRECTIONS:
 137          return 8;
 138       case PIPE_SHADER_CAP_MAX_CONTROL_FLOW_DEPTH:
 139          return 0;
 140       case PIPE_SHADER_CAP_MAX_INPUTS:
 141          return 10;
 142       case PIPE_SHADER_CAP_MAX_OUTPUTS:
 143          return 1;
 144       case PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE:
 145          return 32 * sizeof(float[4]);
 146       case PIPE_SHADER_CAP_MAX_CONST_BUFFERS:
 147          return 1;
 148       case PIPE_SHADER_CAP_MAX_TEMPS:
 149          return 12; /* XXX: 12 -> 32 ? */
 150       case PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED:
 151       case PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED:
 152          return 0;
 153       case PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR:
 154       case PIPE_SHADER_CAP_INDIRECT_OUTPUT_ADDR:
 155       case PIPE_SHADER_CAP_INDIRECT_TEMP_ADDR:
 156       case PIPE_SHADER_CAP_INDIRECT_CONST_ADDR:
 157          return 1;
 158       case PIPE_SHADER_CAP_SUBROUTINES:
 159          return 0;
 160       case PIPE_SHADER_CAP_INTEGERS:
 161       case PIPE_SHADER_CAP_INT64_ATOMICS:
 162       case PIPE_SHADER_CAP_FP16:
 163       case PIPE_SHADER_CAP_FP16_DERIVATIVES:
 164       case PIPE_SHADER_CAP_INT16:
 165       case PIPE_SHADER_CAP_GLSL_16BIT_TEMPS:
 166          return 0;
 167       case PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS:
 168       case PIPE_SHADER_CAP_MAX_SAMPLER_VIEWS:
 169          return I915_TEX_UNITS;
 170       case PIPE_SHADER_CAP_TGSI_DROUND_SUPPORTED:
 171       case PIPE_SHADER_CAP_TGSI_DFRACEXP_DLDEXP_SUPPORTED:
 172       case PIPE_SHADER_CAP_TGSI_LDEXP_SUPPORTED:
 173       case PIPE_SHADER_CAP_TGSI_FMA_SUPPORTED:
 174       case PIPE_SHADER_CAP_TGSI_ANY_INOUT_DECL_RANGE:
 175       case PIPE_SHADER_CAP_MAX_SHADER_BUFFERS:
 176       case PIPE_SHADER_CAP_MAX_SHADER_IMAGES:
 177       case PIPE_SHADER_CAP_LOWER_IF_THRESHOLD:
 178       case PIPE_SHADER_CAP_PREFERRED_IR:
 179       case PIPE_SHADER_CAP_TGSI_SKIP_MERGE_REGISTERS:
 180          return 0;
 181       case PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT:
 182          return 32;
 183       default:
 184          debug_printf("%s: Unknown cap %u.\n", __FUNCTION__, cap);
 185          return 0;
 186       }
 187       break;
 188    default:
 189       return 0;
 190    }
 191
 192 }
 193
 194 static int
 195 i915_get_param(struct pipe_screen *screen, enum pipe_cap cap)
 196 {
 197    struct i915_screen *is = i915_screen(screen);
 198
 199    switch (cap) {
 200    /* Supported features (boolean caps). */
 201    case PIPE_CAP_ANISOTROPIC_FILTER:
 202    case PIPE_CAP_NPOT_TEXTURES:
 203    case PIPE_CAP_MIXED_FRAMEBUFFER_SIZES:
 204    case PIPE_CAP_POINT_SPRITE:
 205    case PIPE_CAP_PRIMITIVE_RESTART: /* draw module */
 206    case PIPE_CAP_PRIMITIVE_RESTART_FIXED_INDEX:
 207    case PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR:
 208    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
 209    case PIPE_CAP_TGSI_INSTANCEID:
 210    case PIPE_CAP_VERTEX_COLOR_CLAMPED:
 211    case PIPE_CAP_USER_VERTEX_BUFFERS:
 212    case PIPE_CAP_MIXED_COLOR_DEPTH_BITS:
 213       return 1;
 214
 215    /* Unsupported features (boolean caps). */
 216    case PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS:
 217    case PIPE_CAP_DEPTH_CLIP_DISABLE:
 218    case PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE:
 219    case PIPE_CAP_INDEP_BLEND_ENABLE:
 220    case PIPE_CAP_INDEP_BLEND_FUNC:
 221    case PIPE_CAP_SHADER_STENCIL_EXPORT:
 222    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
 223    case PIPE_CAP_TEXTURE_MIRROR_CLAMP_TO_EDGE:
 224    case PIPE_CAP_TEXTURE_SWIZZLE:
 225    case PIPE_CAP_QUERY_TIME_ELAPSED:
 226    case PIPE_CAP_FRAGMENT_SHADER_TEXTURE_LOD:
 227    case PIPE_CAP_FRAGMENT_SHADER_DERIVATIVES:
 228    case PIPE_CAP_VERTEX_SHADER_SATURATE:
 229    case PIPE_CAP_SEAMLESS_CUBE_MAP:
 230    case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
 231    case PIPE_CAP_FRAGMENT_COLOR_CLAMPED:
 232    case PIPE_CAP_MIXED_COLORBUFFER_FORMATS:
 233    case PIPE_CAP_CONDITIONAL_RENDER:
 234    case PIPE_CAP_TEXTURE_BARRIER:
 235    case PIPE_CAP_TGSI_CAN_COMPACT_CONSTANTS:
 236    case PIPE_CAP_VERTEX_COLOR_UNCLAMPED:
 237    case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
 238    case PIPE_CAP_START_INSTANCE:
 239    case PIPE_CAP_QUERY_TIMESTAMP:
 240    case PIPE_CAP_QUERY_PIPELINE_STATISTICS:
 241    case PIPE_CAP_TEXTURE_MULTISAMPLE:
 242    case PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK:
 243    case PIPE_CAP_CUBE_MAP_ARRAY:
 244    case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
 245    case PIPE_CAP_TGSI_TEXCOORD:
 246    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
 247    case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
 248    case PIPE_CAP_TEXTURE_GATHER_SM5:
 249    case PIPE_CAP_FAKE_SW_MSAA:
 250    case PIPE_CAP_TEXTURE_QUERY_LOD:
 251    case PIPE_CAP_SAMPLE_SHADING:
 252    case PIPE_CAP_TEXTURE_GATHER_OFFSETS:
 253    case PIPE_CAP_TGSI_VS_WINDOW_SPACE_POSITION:
 254    case PIPE_CAP_CONDITIONAL_RENDER_INVERTED:
 255    case PIPE_CAP_CLIP_HALFZ:
 256    case PIPE_CAP_VERTEXID_NOBASE:
 257    case PIPE_CAP_POLYGON_OFFSET_CLAMP:
 258    case PIPE_CAP_MULTISAMPLE_Z_RESOLVE:
 259    case PIPE_CAP_RESOURCE_FROM_USER_MEMORY:
 260    case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
 261    case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
 262    case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
 263    case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
 264    case PIPE_CAP_DEPTH_BOUNDS_TEST:
 265    case PIPE_CAP_TGSI_TXQS:
 266    case PIPE_CAP_FORCE_PERSAMPLE_INTERP:
 267    case PIPE_CAP_SHAREABLE_SHADERS:
 268    case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS:
 269    case PIPE_CAP_CLEAR_TEXTURE:
 270    case PIPE_CAP_DRAW_PARAMETERS:
 271    case PIPE_CAP_TGSI_PACK_HALF_FLOAT:
 272    case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL:
 273    case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
 274    case PIPE_CAP_SHADER_BUFFER_OFFSET_ALIGNMENT:
 275    case PIPE_CAP_INVALIDATE_BUFFER:
 276    case PIPE_CAP_GENERATE_MIPMAP:
 277    case PIPE_CAP_STRING_MARKER:
 278    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
 279    case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS:
 280    case PIPE_CAP_QUERY_MEMORY_INFO:
 281    case PIPE_CAP_PCI_GROUP:
 282    case PIPE_CAP_PCI_BUS:
 283    case PIPE_CAP_PCI_DEVICE:
 284    case PIPE_CAP_PCI_FUNCTION:
 285    case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
 286    case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
 287    case PIPE_CAP_CULL_DISTANCE:
 288    case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
 289    case PIPE_CAP_TGSI_VOTE:
 290    case PIPE_CAP_MAX_WINDOW_RECTANGLES:
 291    case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
 292    case PIPE_CAP_TGSI_ARRAY_COMPONENTS:
 293    case PIPE_CAP_POLYGON_MODE_FILL_RECTANGLE:
 294    case PIPE_CAP_POST_DEPTH_COVERAGE:
 295    case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_TRIANGLES:
 296    case PIPE_CAP_CONSERVATIVE_RASTER_POST_SNAP_POINTS_LINES:
 297    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_TRIANGLES:
 298    case PIPE_CAP_CONSERVATIVE_RASTER_PRE_SNAP_POINTS_LINES:
 299    case PIPE_CAP_CONSERVATIVE_RASTER_POST_DEPTH_COVERAGE:
 300    case PIPE_CAP_MAX_CONSERVATIVE_RASTER_SUBPIXEL_PRECISION_BIAS:
 301    case PIPE_CAP_MAX_TEXTURE_UPLOAD_MEMORY_BUDGET:
 302       return 0;
 303
 304    case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS:
 305    case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
 306    case PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS:
 307    case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
 308    case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
 309    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
 310    case PIPE_CAP_TGSI_VS_LAYER_VIEWPORT:
 311    case PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT:
 312    case PIPE_CAP_DRAW_INDIRECT:
 313    case PIPE_CAP_MULTI_DRAW_INDIRECT:
 314    case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS:
 315    case PIPE_CAP_TGSI_FS_FINE_DERIVATIVE:
 316    case PIPE_CAP_SAMPLER_VIEW_TARGET:
 317    case PIPE_CAP_VIEWPORT_SUBPIXEL_BITS:
 318    case PIPE_CAP_TGSI_CAN_READ_OUTPUTS:
 319    case PIPE_CAP_NATIVE_FENCE_FD:
 320    case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
 321    case PIPE_CAP_FBFETCH:
 322    case PIPE_CAP_TGSI_MUL_ZERO_WINS:
 323    case PIPE_CAP_DOUBLES:
 324    case PIPE_CAP_INT64:
 325    case PIPE_CAP_INT64_DIVMOD:
 326    case PIPE_CAP_TGSI_TEX_TXF_LZ:
 327    case PIPE_CAP_TGSI_CLOCK:
 328    case PIPE_CAP_SPARSE_BUFFER_PAGE_SIZE:
 329    case PIPE_CAP_TGSI_BALLOT:
 330    case PIPE_CAP_TGSI_TES_LAYER_VIEWPORT:
 331    case PIPE_CAP_CAN_BIND_CONST_BUFFER_AS_VERTEX:
 332    case PIPE_CAP_ALLOW_MAPPED_BUFFERS_DURING_EXECUTION:
 333    case PIPE_CAP_BINDLESS_TEXTURE:
 334    case PIPE_CAP_NIR_SAMPLERS_AS_DEREF:
 335    case PIPE_CAP_QUERY_SO_OVERFLOW:
 336    case PIPE_CAP_MEMOBJ:
 337    case PIPE_CAP_LOAD_CONSTBUF:
 338    case PIPE_CAP_TGSI_ANY_REG_AS_ADDRESS:
 339    case PIPE_CAP_TILE_RASTER_ORDER:
 340    case PIPE_CAP_MAX_COMBINED_SHADER_OUTPUT_RESOURCES:
 341    case PIPE_CAP_FRAMEBUFFER_MSAA_CONSTRAINTS:
 342    case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
 343    case PIPE_CAP_CONTEXT_PRIORITY_MASK:
 344    case PIPE_CAP_FENCE_SIGNAL:
 345    case PIPE_CAP_CONSTBUF0_FLAGS:
 346    case PIPE_CAP_PACKED_UNIFORMS:
 347    case PIPE_CAP_PROGRAMMABLE_SAMPLE_LOCATIONS:
 348       return 0;
 349
 350    case PIPE_CAP_MAX_GS_INVOCATIONS:
 351       return 32;
 352
 353    case PIPE_CAP_MAX_SHADER_BUFFER_SIZE:
 354       return 1 << 27;
 355
 356    case PIPE_CAP_MAX_VIEWPORTS:
 357       return 1;
 358
 359    case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
 360       return 64;
 361
 362    case PIPE_CAP_GLSL_FEATURE_LEVEL:
 363    case PIPE_CAP_GLSL_FEATURE_LEVEL_COMPATIBILITY:
 364       return 120;
 365
 366    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
 367       return 16;
 368
 369    /* Features we can lie about (boolean caps). */
 370    case PIPE_CAP_OCCLUSION_QUERY:
 371       return is->debug.lie ? 1 : 0;
 372
 373    /* Texturing. */
 374    case PIPE_CAP_MAX_TEXTURE_2D_SIZE:
 375       return 1 << (I915_MAX_TEXTURE_2D_LEVELS - 1);
 376    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 377       return I915_MAX_TEXTURE_3D_LEVELS;
 378    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 379       return 1 << (I915_MAX_TEXTURE_2D_LEVELS - 1);
 380    case PIPE_CAP_MIN_TEXEL_OFFSET:
 381    case PIPE_CAP_MAX_TEXEL_OFFSET:
 382    case PIPE_CAP_MIN_TEXTURE_GATHER_OFFSET:
 383    case PIPE_CAP_MAX_TEXTURE_GATHER_OFFSET:
 384    case PIPE_CAP_MAX_STREAM_OUTPUT_BUFFERS:
 385    case PIPE_CAP_MAX_STREAM_OUTPUT_SEPARATE_COMPONENTS:
 386    case PIPE_CAP_MAX_STREAM_OUTPUT_INTERLEAVED_COMPONENTS:
 387       return 0;
 388
 389    /* Render targets. */
 390    case PIPE_CAP_MAX_RENDER_TARGETS:
 391       return 1;
 392
 393    /* Geometry shader output, unsupported. */
 394    case PIPE_CAP_MAX_GEOMETRY_OUTPUT_VERTICES:
 395    case PIPE_CAP_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
 396    case PIPE_CAP_MAX_VERTEX_STREAMS:
 397       return 0;
 398
 399    case PIPE_CAP_MAX_VERTEX_ATTRIB_STRIDE:
 400       return 2048;
 401
 402    /* Fragment coordinate conventions. */
 403    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT:
 404    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER:
 405       return 1;
 406    case PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT:
 407    case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER:
 408       return 0;
 409    case PIPE_CAP_ENDIANNESS:
 410       return PIPE_ENDIAN_LITTLE;
 411    case PIPE_CAP_MAX_VARYINGS:
 412       return 10;
 413
 414    case PIPE_CAP_VENDOR_ID:
 415       return 0x8086;
 416    case PIPE_CAP_DEVICE_ID:
 417       return is->iws->pci_id;
 418    case PIPE_CAP_ACCELERATED:
 419       return 1;
 420    case PIPE_CAP_VIDEO_MEMORY: {
 421       /* Once a batch uses more than 75% of the maximum mappable size, we
 422        * assume that there's some fragmentation, and we start doing extra
 423        * flushing, etc.  That's the big cliff apps will care about.
 424        */
 425       const int gpu_mappable_megabytes = is->iws->aperture_size(is->iws) * 3 / 4;
 426       uint64_t system_memory;
 427
 428       if (!os_get_total_physical_memory(&system_memory))
 429          return 0;
 430
 431       return MIN2(gpu_mappable_megabytes, (int)(system_memory >> 20));
 432    }
 433    case PIPE_CAP_UMA:
 434       return 1;
 435
 436    case PIPE_CAP_COMPUTE:
 437    case PIPE_CAP_QUERY_BUFFER_OBJECT:
 438       return 0;
 439
 440    default:
 441       return u_pipe_screen_get_param_defaults(screen, cap);
 442    }
 443 }
 444
 445 static float
 446 i915_get_paramf(struct pipe_screen *screen, enum pipe_capf cap)
 447 {
 448    switch(cap) {
 449    case PIPE_CAPF_MAX_LINE_WIDTH:
 450       /* fall-through */
 451    case PIPE_CAPF_MAX_LINE_WIDTH_AA:
 452       return 7.5;
 453
 454    case PIPE_CAPF_MAX_POINT_WIDTH:
 455       /* fall-through */
 456    case PIPE_CAPF_MAX_POINT_WIDTH_AA:
 457       return 255.0;
 458
 459    case PIPE_CAPF_MAX_TEXTURE_ANISOTROPY:
 460       return 4.0;
 461
 462    case PIPE_CAPF_MAX_TEXTURE_LOD_BIAS:
 463       return 16.0;
 464
 465    case PIPE_CAPF_MIN_CONSERVATIVE_RASTER_DILATE:
 466       /* fall-through */
 467    case PIPE_CAPF_MAX_CONSERVATIVE_RASTER_DILATE:
 468       /* fall-through */
 469    case PIPE_CAPF_CONSERVATIVE_RASTER_DILATE_GRANULARITY:
 470       return 0.0f;
 471
 472    default:
 473       debug_printf("%s: Unknown cap %u.\n", __FUNCTION__, cap);
 474       return 0;
 475    }
 476 }
 477
 478 bool
 479 i915_is_format_supported(struct pipe_screen *screen,
 480                          enum pipe_format format,
 481                          enum pipe_texture_target target,
 482                          unsigned sample_count,
 483                          unsigned storage_sample_count,
 484                          unsigned tex_usage)
 485 {
 486    static const enum pipe_format tex_supported[] = {
 487       PIPE_FORMAT_B8G8R8A8_UNORM,
 488       PIPE_FORMAT_B8G8R8A8_SRGB,
 489       PIPE_FORMAT_B8G8R8X8_UNORM,
 490       PIPE_FORMAT_R8G8B8A8_UNORM,
 491       PIPE_FORMAT_R8G8B8X8_UNORM,
 492       PIPE_FORMAT_B4G4R4A4_UNORM,
 493       PIPE_FORMAT_B5G6R5_UNORM,
 494       PIPE_FORMAT_B5G5R5A1_UNORM,
 495       PIPE_FORMAT_B10G10R10A2_UNORM,
 496       PIPE_FORMAT_L8_UNORM,
 497       PIPE_FORMAT_A8_UNORM,
 498       PIPE_FORMAT_I8_UNORM,
 499       PIPE_FORMAT_L8A8_UNORM,
 500       PIPE_FORMAT_UYVY,
 501       PIPE_FORMAT_YUYV,
 502       /* XXX why not?
 503       PIPE_FORMAT_Z16_UNORM, */
 504       PIPE_FORMAT_DXT1_RGB,
 505       PIPE_FORMAT_DXT1_RGBA,
 506       PIPE_FORMAT_DXT3_RGBA,
 507       PIPE_FORMAT_DXT5_RGBA,
 508       PIPE_FORMAT_Z24X8_UNORM,
 509       PIPE_FORMAT_Z24_UNORM_S8_UINT,
 510       PIPE_FORMAT_NONE  /* list terminator */
 511    };
 512    static const enum pipe_format render_supported[] = {
 513       PIPE_FORMAT_B8G8R8A8_UNORM,
 514       PIPE_FORMAT_B8G8R8X8_UNORM,
 515       PIPE_FORMAT_R8G8B8A8_UNORM,
 516       PIPE_FORMAT_R8G8B8X8_UNORM,
 517       PIPE_FORMAT_B5G6R5_UNORM,
 518       PIPE_FORMAT_B5G5R5A1_UNORM,
 519       PIPE_FORMAT_B4G4R4A4_UNORM,
 520       PIPE_FORMAT_B10G10R10A2_UNORM,
 521       PIPE_FORMAT_L8_UNORM,
 522       PIPE_FORMAT_A8_UNORM,
 523       PIPE_FORMAT_I8_UNORM,
 524       PIPE_FORMAT_NONE  /* list terminator */
 525    };
 526    static const enum pipe_format depth_supported[] = {
 527       /* XXX why not?
 528       PIPE_FORMAT_Z16_UNORM, */
 529       PIPE_FORMAT_Z24X8_UNORM,
 530       PIPE_FORMAT_Z24_UNORM_S8_UINT,
 531       PIPE_FORMAT_NONE  /* list terminator */
 532    };
 533    const enum pipe_format *list;
 534    uint i;
 535
 536    if (sample_count > 1)
 537       return false;
 538
 539    if (MAX2(1, sample_count) != MAX2(1, storage_sample_count))
 540       return false;
 541
 542    if(tex_usage & PIPE_BIND_DEPTH_STENCIL)
 543       list = depth_supported;
 544    else if (tex_usage & PIPE_BIND_RENDER_TARGET)
 545       list = render_supported;
 546    else if (tex_usage & PIPE_BIND_SAMPLER_VIEW)
 547       list = tex_supported;
 548    else
 549       return true; /* PIPE_BIND_{VERTEX,INDEX}_BUFFER */
 550
 551    for (i = 0; list[i] != PIPE_FORMAT_NONE; i++) {
 552       if (list[i] == format)
 553          return true;
 554    }
 555
 556    return false;
 557 }
 558
 559
 560 /*
 561  * Fence functions
 562  */
 563
 564
 565 static void
 566 i915_fence_reference(struct pipe_screen *screen,
 567                      struct pipe_fence_handle **ptr,
 568                      struct pipe_fence_handle *fence)
 569 {
 570    struct i915_screen *is = i915_screen(screen);
 571
 572    is->iws->fence_reference(is->iws, ptr, fence);
 573 }
 574
 575 static bool
 576 i915_fence_finish(struct pipe_screen *screen,
 577                   struct pipe_context *ctx,
 578                   struct pipe_fence_handle *fence,
 579                   uint64_t timeout)
 580 {
 581    struct i915_screen *is = i915_screen(screen);
 582
 583    if (!timeout)
 584       return is->iws->fence_signalled(is->iws, fence) == 1;
 585
 586    return is->iws->fence_finish(is->iws, fence) == 1;
 587 }
 588
 589
 590 /*
 591  * Generic functions
 592  */
 593
 594
 595 static void
 596 i915_flush_frontbuffer(struct pipe_screen *screen,
 597                        struct pipe_resource *resource,
 598                        unsigned level, unsigned layer,
 599                        void *winsys_drawable_handle,
 600                        struct pipe_box *sub_box)
 601 {
 602    /* XXX: Dummy right now. */
 603    (void)screen;
 604    (void)resource;
 605    (void)level;
 606    (void)layer;
 607    (void)winsys_drawable_handle;
 608    (void)sub_box;
 609 }
 610
 611 static void
 612 i915_destroy_screen(struct pipe_screen *screen)
 613 {
 614    struct i915_screen *is = i915_screen(screen);
 615
 616    if (is->iws)
 617       is->iws->destroy(is->iws);
 618
 619    FREE(is);
 620 }
 621
 622 /**
 623  * Create a new i915_screen object
 624  */
 625 struct pipe_screen *
 626 i915_screen_create(struct i915_winsys *iws)
 627 {
 628    struct i915_screen *is = CALLOC_STRUCT(i915_screen);
 629
 630    if (!is)
 631       return NULL;
 632
 633    switch (iws->pci_id) {
 634    case PCI_CHIP_I915_G:
 635    case PCI_CHIP_I915_GM:
 636       is->is_i945 = FALSE;
 637       break;
 638
 639    case PCI_CHIP_I945_G:
 640    case PCI_CHIP_I945_GM:
 641    case PCI_CHIP_I945_GME:
 642    case PCI_CHIP_G33_G:
 643    case PCI_CHIP_Q33_G:
 644    case PCI_CHIP_Q35_G:
 645    case PCI_CHIP_PINEVIEW_G:
 646    case PCI_CHIP_PINEVIEW_M:
 647       is->is_i945 = TRUE;
 648       break;
 649
 650    default:
 651       debug_printf("%s: unknown pci id 0x%x, cannot create screen\n",
 652                    __FUNCTION__, iws->pci_id);
 653       FREE(is);
 654       return NULL;
 655    }
 656
 657    is->iws = iws;
 658
 659    is->base.destroy = i915_destroy_screen;
 660    is->base.flush_frontbuffer = i915_flush_frontbuffer;
 661
 662    is->base.get_name = i915_get_name;
 663    is->base.get_vendor = i915_get_vendor;
 664    is->base.get_device_vendor = i915_get_device_vendor;
 665    is->base.get_param = i915_get_param;
 666    is->base.get_shader_param = i915_get_shader_param;
 667    is->base.get_paramf = i915_get_paramf;
 668    is->base.is_format_supported = i915_is_format_supported;
 669
 670    is->base.context_create = i915_create_context;
 671
 672    is->base.fence_reference = i915_fence_reference;
 673    is->base.fence_finish = i915_fence_finish;
 674
 675    i915_init_screen_resource_functions(is);
 676
 677    i915_debug_init(is);
 678
 679    return &is->base;
 680 }