src/gallium/drivers/svga/svga_winsys.h

   1 /**********************************************************
   2  * Copyright 2008-2009 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
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   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
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  25
  26 /**
  27  * @file
  28  * VMware SVGA specific winsys interface.
  29  *
  30  * @author Jose Fonseca <jfonseca@vmware.com>
  31  *
  32  * Documentation taken from the VMware SVGA DDK.
  33  */
  34
  35 #ifndef SVGA_WINSYS_H_
  36 #define SVGA_WINSYS_H_
  37
  38
  39 #include "svga_types.h"
  40 #include "svga_reg.h"
  41 #include "svga3d_reg.h"
  42
  43 #include "pipe/p_compiler.h"
  44 #include "pipe/p_defines.h"
  45
  46 #include "svga_mksstats.h"
  47
  48 struct svga_winsys_screen;
  49 struct svga_winsys_buffer;
  50 struct pipe_screen;
  51 struct pipe_context;
  52 struct pipe_debug_callback;
  53 struct pipe_fence_handle;
  54 struct pipe_resource;
  55 struct svga_region;
  56 struct winsys_handle;
  57
  58
  59 #define SVGA_BUFFER_USAGE_PINNED  (1 << 0)
  60 #define SVGA_BUFFER_USAGE_WRAPPED (1 << 1)
  61 #define SVGA_BUFFER_USAGE_SHADER  (1 << 2)
  62
  63 /**
  64  * Relocation flags to help with dirty tracking
  65  * SVGA_RELOC_WRITE -   The command will cause a GPU write to this
  66  *                      resource.
  67  * SVGA_RELOC_READ -    The command will cause a GPU read from this
  68  *                      resource.
  69  * SVGA_RELOC_INTERNAL  The command will only transfer data internally
  70  *                      within the resource, and optionally clear
  71  *                      dirty bits
  72  * SVGA_RELOC_DMA -     Only set for resource buffer DMA uploads for winsys
  73  *                      implementations that want to track the amount
  74  *                      of such data referenced in the command stream.
  75  */
  76 #define SVGA_RELOC_WRITE          (1 << 0)
  77 #define SVGA_RELOC_READ           (1 << 1)
  78 #define SVGA_RELOC_INTERNAL       (1 << 2)
  79 #define SVGA_RELOC_DMA            (1 << 3)
  80
  81 #define SVGA_FENCE_FLAG_EXEC      (1 << 0)
  82 #define SVGA_FENCE_FLAG_QUERY     (1 << 1)
  83
  84 #define SVGA_SURFACE_USAGE_SHARED  (1 << 0)
  85 #define SVGA_SURFACE_USAGE_SCANOUT (1 << 1)
  86
  87 #define SVGA_QUERY_FLAG_SET        (1 << 0)
  88 #define SVGA_QUERY_FLAG_REF        (1 << 1)
  89
  90 #define SVGA_HINT_FLAG_CAN_PRE_FLUSH (1 << 0)  /* Can preemptively flush */
  91
  92 /**
  93  * SVGA mks statistics info
  94  */
  95 struct svga_winsys_stats_timeframe {
  96    void *counterTime;
  97    uint64 startTime;
  98    uint64 adjustedStartTime;
  99    struct svga_winsys_stats_timeframe *enclosing;
 100 };
 101
 102 enum svga_stats_count {
 103    SVGA_STATS_COUNT_BLENDSTATE,
 104    SVGA_STATS_COUNT_DEPTHSTENCILSTATE,
 105    SVGA_STATS_COUNT_RASTERIZERSTATE,
 106    SVGA_STATS_COUNT_SAMPLER,
 107    SVGA_STATS_COUNT_SAMPLERVIEW,
 108    SVGA_STATS_COUNT_SURFACEWRITEFLUSH,
 109    SVGA_STATS_COUNT_TEXREADBACK,
 110    SVGA_STATS_COUNT_VERTEXELEMENT,
 111    SVGA_STATS_COUNT_MAX
 112 };
 113
 114 enum svga_stats_time {
 115    SVGA_STATS_TIME_BUFFERSFLUSH,
 116    SVGA_STATS_TIME_BUFFERTRANSFERMAP,
 117    SVGA_STATS_TIME_BUFFERTRANSFERUNMAP,
 118    SVGA_STATS_TIME_CONTEXTFINISH,
 119    SVGA_STATS_TIME_CONTEXTFLUSH,
 120    SVGA_STATS_TIME_CREATEBACKEDSURFACEVIEW,
 121    SVGA_STATS_TIME_CREATEBUFFER,
 122    SVGA_STATS_TIME_CREATECONTEXT,
 123    SVGA_STATS_TIME_CREATEFS,
 124    SVGA_STATS_TIME_CREATEGS,
 125    SVGA_STATS_TIME_CREATESURFACE,
 126    SVGA_STATS_TIME_CREATESURFACEVIEW,
 127    SVGA_STATS_TIME_CREATETEXTURE,
 128    SVGA_STATS_TIME_CREATEVS,
 129    SVGA_STATS_TIME_DEFINESHADER,
 130    SVGA_STATS_TIME_DESTROYSURFACE,
 131    SVGA_STATS_TIME_DRAWVBO,
 132    SVGA_STATS_TIME_DRAWARRAYS,
 133    SVGA_STATS_TIME_DRAWELEMENTS,
 134    SVGA_STATS_TIME_EMITFS,
 135    SVGA_STATS_TIME_EMITGS,
 136    SVGA_STATS_TIME_EMITVS,
 137    SVGA_STATS_TIME_FENCEFINISH,
 138    SVGA_STATS_TIME_GENERATEINDICES,
 139    SVGA_STATS_TIME_HWTNLDRAWARRAYS,
 140    SVGA_STATS_TIME_HWTNLDRAWELEMENTS,
 141    SVGA_STATS_TIME_HWTNLFLUSH,
 142    SVGA_STATS_TIME_HWTNLPRIM,
 143    SVGA_STATS_TIME_PROPAGATESURFACE,
 144    SVGA_STATS_TIME_SETSAMPLERVIEWS,
 145    SVGA_STATS_TIME_SURFACEFLUSH,
 146    SVGA_STATS_TIME_SWTNLDRAWVBO,
 147    SVGA_STATS_TIME_SWTNLUPDATEDRAW,
 148    SVGA_STATS_TIME_SWTNLUPDATEVDECL,
 149    SVGA_STATS_TIME_TEXTRANSFERMAP,
 150    SVGA_STATS_TIME_TEXTRANSFERUNMAP,
 151    SVGA_STATS_TIME_TGSIVGPU10TRANSLATE,
 152    SVGA_STATS_TIME_TGSIVGPU9TRANSLATE,
 153    SVGA_STATS_TIME_UPDATESTATE,
 154    SVGA_STATS_TIME_VALIDATESURFACEVIEW,
 155    SVGA_STATS_TIME_VBUFDRAWARRAYS,
 156    SVGA_STATS_TIME_VBUFDRAWELEMENTS,
 157    SVGA_STATS_TIME_VBUFRENDERALLOCVERT,
 158    SVGA_STATS_TIME_VBUFRENDERMAPVERT,
 159    SVGA_STATS_TIME_VBUFRENDERUNMAPVERT,
 160    SVGA_STATS_TIME_VBUFSUBMITSTATE,
 161    SVGA_STATS_TIME_MAX
 162 };
 163
 164 #define SVGA_STATS_PREFIX "GuestGL_"
 165
 166 #define SVGA_STATS_COUNT_NAMES                \
 167    SVGA_STATS_PREFIX "BlendState",            \
 168    SVGA_STATS_PREFIX "DepthStencilState",     \
 169    SVGA_STATS_PREFIX "RasterizerState",       \
 170    SVGA_STATS_PREFIX "Sampler",               \
 171    SVGA_STATS_PREFIX "SamplerView",           \
 172    SVGA_STATS_PREFIX "SurfaceWriteFlush",     \
 173    SVGA_STATS_PREFIX "TextureReadback",       \
 174    SVGA_STATS_PREFIX "VertexElement"          \
 175
 176 #define SVGA_STATS_TIME_NAMES                       \
 177    SVGA_STATS_PREFIX "BuffersFlush",                \
 178    SVGA_STATS_PREFIX "BufferTransferMap",           \
 179    SVGA_STATS_PREFIX "BufferTransferUnmap",         \
 180    SVGA_STATS_PREFIX "ContextFinish",               \
 181    SVGA_STATS_PREFIX "ContextFlush",                \
 182    SVGA_STATS_PREFIX "CreateBackedSurfaceView",     \
 183    SVGA_STATS_PREFIX "CreateBuffer",                \
 184    SVGA_STATS_PREFIX "CreateContext",               \
 185    SVGA_STATS_PREFIX "CreateFS",                    \
 186    SVGA_STATS_PREFIX "CreateGS",                    \
 187    SVGA_STATS_PREFIX "CreateSurface",               \
 188    SVGA_STATS_PREFIX "CreateSurfaceView",           \
 189    SVGA_STATS_PREFIX "CreateTexture",               \
 190    SVGA_STATS_PREFIX "CreateVS",                    \
 191    SVGA_STATS_PREFIX "DefineShader",                \
 192    SVGA_STATS_PREFIX "DestroySurface",              \
 193    SVGA_STATS_PREFIX "DrawVBO",                     \
 194    SVGA_STATS_PREFIX "DrawArrays",                  \
 195    SVGA_STATS_PREFIX "DrawElements",                \
 196    SVGA_STATS_PREFIX "EmitFS",                      \
 197    SVGA_STATS_PREFIX "EmitGS",                      \
 198    SVGA_STATS_PREFIX "EmitVS",                      \
 199    SVGA_STATS_PREFIX "FenceFinish",                 \
 200    SVGA_STATS_PREFIX "GenerateIndices",             \
 201    SVGA_STATS_PREFIX "HWtnlDrawArrays",             \
 202    SVGA_STATS_PREFIX "HWtnlDrawElements",           \
 203    SVGA_STATS_PREFIX "HWtnlFlush",                  \
 204    SVGA_STATS_PREFIX "HWtnlPrim",                   \
 205    SVGA_STATS_PREFIX "PropagateSurface",            \
 206    SVGA_STATS_PREFIX "SetSamplerViews",             \
 207    SVGA_STATS_PREFIX "SurfaceFlush",                \
 208    SVGA_STATS_PREFIX "SwtnlDrawVBO",                \
 209    SVGA_STATS_PREFIX "SwtnlUpdateDraw",             \
 210    SVGA_STATS_PREFIX "SwtnlUpdateVDecl",            \
 211    SVGA_STATS_PREFIX "TextureTransferMap",          \
 212    SVGA_STATS_PREFIX "TextureTransferUnmap",        \
 213    SVGA_STATS_PREFIX "TGSIVGPU10Translate",         \
 214    SVGA_STATS_PREFIX "TGSIVGPU9Translate",          \
 215    SVGA_STATS_PREFIX "UpdateState",                 \
 216    SVGA_STATS_PREFIX "ValidateSurfaceView",         \
 217    SVGA_STATS_PREFIX "VbufDrawArrays",              \
 218    SVGA_STATS_PREFIX "VbufDrawElements",            \
 219    SVGA_STATS_PREFIX "VbufRenderAllocVertices",     \
 220    SVGA_STATS_PREFIX "VbufRenderMapVertices",       \
 221    SVGA_STATS_PREFIX "VbufRenderUnmapVertices",     \
 222    SVGA_STATS_PREFIX "VbufSubmitState"
 223
 224
 225 /** Opaque surface handle */
 226 struct svga_winsys_surface;
 227
 228 /** Opaque guest-backed objects */
 229 struct svga_winsys_gb_shader;
 230 struct svga_winsys_gb_query;
 231
 232
 233 /**
 234  * SVGA per-context winsys interface.
 235  */
 236 struct svga_winsys_context
 237 {
 238    void
 239    (*destroy)(struct svga_winsys_context *swc);
 240
 241    void *
 242    (*reserve)(struct svga_winsys_context *swc,
 243               uint32_t nr_bytes, uint32_t nr_relocs );
 244
 245    /**
 246     * Returns current size of command buffer, in bytes.
 247     */
 248    unsigned
 249    (*get_command_buffer_size)(struct svga_winsys_context *swc);
 250
 251    /**
 252     * Emit a relocation for a host surface.
 253     *
 254     * @param flags bitmask of SVGA_RELOC_* flags
 255     *
 256     * NOTE: Order of this call does matter. It should be the same order
 257     * as relocations appear in the command buffer.
 258     */
 259    void
 260    (*surface_relocation)(struct svga_winsys_context *swc,
 261                          uint32 *sid,
 262                          uint32 *mobid,
 263                          struct svga_winsys_surface *surface,
 264                          unsigned flags);
 265
 266    /**
 267     * Emit a relocation for a guest memory region.
 268     *
 269     * @param flags bitmask of SVGA_RELOC_* flags
 270     *
 271     * NOTE: Order of this call does matter. It should be the same order
 272     * as relocations appear in the command buffer.
 273     */
 274    void
 275    (*region_relocation)(struct svga_winsys_context *swc,
 276                         struct SVGAGuestPtr *ptr,
 277                         struct svga_winsys_buffer *buffer,
 278                         uint32 offset,
 279                         unsigned flags);
 280
 281    /**
 282     * Emit a relocation for a guest-backed shader object.
 283     *
 284     * NOTE: Order of this call does matter. It should be the same order
 285     * as relocations appear in the command buffer.
 286     */
 287    void
 288    (*shader_relocation)(struct svga_winsys_context *swc,
 289                         uint32 *shid,
 290                         uint32 *mobid,
 291                         uint32 *offset,
 292                         struct svga_winsys_gb_shader *shader,
 293                         unsigned flags);
 294
 295    /**
 296     * Emit a relocation for a guest-backed context.
 297     *
 298     * NOTE: Order of this call does matter. It should be the same order
 299     * as relocations appear in the command buffer.
 300     */
 301    void
 302    (*context_relocation)(struct svga_winsys_context *swc, uint32 *cid);
 303
 304    /**
 305     * Emit a relocation for a guest Memory OBject.
 306     *
 307     * @param flags bitmask of SVGA_RELOC_* flags
 308     * @param offset_into_mob Buffer starts at this offset into the MOB.
 309     *
 310     * Note that not all commands accept an offset into the MOB and
 311     * those commands can't use suballocated buffer pools. To trap
 312     * errors from improper buffer pool usage, set the offset_into_mob
 313     * pointer to NULL.
 314     */
 315    void
 316    (*mob_relocation)(struct svga_winsys_context *swc,
 317                      SVGAMobId *id,
 318                      uint32 *offset_into_mob,
 319                      struct svga_winsys_buffer *buffer,
 320                      uint32 offset,
 321                      unsigned flags);
 322
 323    /**
 324     * Emit a relocation for a guest-backed query object.
 325     *
 326     * NOTE: Order of this call does matter. It should be the same order
 327     * as relocations appear in the command buffer.
 328     */
 329    void
 330    (*query_relocation)(struct svga_winsys_context *swc,
 331                        SVGAMobId *id,
 332                        struct svga_winsys_gb_query *query);
 333
 334    /**
 335     * Bind queries to context.
 336     * \param flags  exactly one of SVGA_QUERY_FLAG_SET/REF
 337     */
 338    enum pipe_error
 339    (*query_bind)(struct svga_winsys_context *sws,
 340                  struct svga_winsys_gb_query *query,
 341                  unsigned flags);
 342
 343    void
 344    (*commit)(struct svga_winsys_context *swc);
 345
 346    enum pipe_error
 347    (*flush)(struct svga_winsys_context *swc,
 348             struct pipe_fence_handle **pfence);
 349
 350    /**
 351     * Context ID used to fill in the commands
 352     *
 353     * Context IDs are arbitrary small non-negative integers,
 354     * global to the entire SVGA device.
 355     */
 356    uint32 cid;
 357
 358    /**
 359     * Flags to hint the current context state
 360     */
 361    uint32 hints;
 362
 363    /**
 364     ** BEGIN new functions for guest-backed surfaces.
 365     **/
 366
 367    boolean have_gb_objects;
 368
 369    /**
 370     * Map a guest-backed surface.
 371     * \param flags  bitmaks of PIPE_TRANSFER_x flags
 372     *
 373     * The surface_map() member is allowed to fail due to a
 374     * shortage of command buffer space, if the
 375     * PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE bit is set in flags.
 376     * In that case, the caller must flush the current command
 377     * buffer and reissue the map.
 378     */
 379    void *
 380    (*surface_map)(struct svga_winsys_context *swc,
 381                   struct svga_winsys_surface *surface,
 382                   unsigned flags, boolean *retry);
 383
 384    /**
 385     * Unmap a guest-backed surface.
 386     * \param rebind  returns a flag indicating whether the caller should
 387     *                issue a SVGA3D_BindGBSurface() call.
 388     */
 389    void
 390    (*surface_unmap)(struct svga_winsys_context *swc,
 391                     struct svga_winsys_surface *surface,
 392                     boolean *rebind);
 393
 394    /**
 395     * Invalidate the content of this surface
 396     */
 397    void
 398    (*surface_invalidate)(struct svga_winsys_context *swc,
 399                          struct svga_winsys_surface *surface);
 400
 401    /**
 402     * Create and define a DX GB shader that resides in the device COTable.
 403     * Caller of this function will issue the DXDefineShader command.
 404     */
 405    struct svga_winsys_gb_shader *
 406    (*shader_create)(struct svga_winsys_context *swc,
 407                     uint32 shaderId,
 408                     SVGA3dShaderType shaderType,
 409                     const uint32 *bytecode,
 410                     uint32 bytecodeLen);
 411
 412    /**
 413     * Destroy a DX GB shader.
 414     * This function will issue the DXDestroyShader command.
 415     */
 416    void
 417    (*shader_destroy)(struct svga_winsys_context *swc,
 418                      struct svga_winsys_gb_shader *shader);
 419
 420    /**
 421     * Rebind a DX GB resource to a context.
 422     * This is called to reference a DX GB resource in the command stream in
 423     * order to page in the associated resource in case the memory has been
 424     * paged out, and to fence it if necessary after command submission.
 425     */
 426    enum pipe_error
 427    (*resource_rebind)(struct svga_winsys_context *swc,
 428                       struct svga_winsys_surface *surface,
 429                       struct svga_winsys_gb_shader *shader,
 430                       unsigned flags);
 431
 432    /** To report perf/conformance/etc issues to the state tracker */
 433    struct pipe_debug_callback *debug_callback;
 434
 435    /** The more recent command issued to command buffer */
 436    SVGAFifo3dCmdId last_command;
 437 };
 438
 439
 440 /**
 441  * SVGA per-screen winsys interface.
 442  */
 443 struct svga_winsys_screen
 444 {
 445    void
 446    (*destroy)(struct svga_winsys_screen *sws);
 447
 448    SVGA3dHardwareVersion
 449    (*get_hw_version)(struct svga_winsys_screen *sws);
 450
 451    boolean
 452    (*get_cap)(struct svga_winsys_screen *sws,
 453               SVGA3dDevCapIndex index,
 454               SVGA3dDevCapResult *result);
 455
 456    /**
 457     * Create a new context.
 458     *
 459     * Context objects encapsulate all render state, and shader
 460     * objects are per-context.
 461     *
 462     * Surfaces are not per-context. The same surface can be shared
 463     * between multiple contexts, and surface operations can occur
 464     * without a context.
 465     */
 466    struct svga_winsys_context *
 467    (*context_create)(struct svga_winsys_screen *sws);
 468
 469
 470    /**
 471     * This creates a "surface" object in the SVGA3D device.
 472     *
 473     * \param sws Pointer to an svga_winsys_context
 474     * \param flags Device surface create flags
 475     * \param format Format Device surface format
 476     * \param usage Winsys usage: bitmask of SVGA_SURFACE_USAGE_x flags
 477     * \param size Surface size given in device format
 478     * \param numLayers Number of layers of the surface (or cube faces)
 479     * \param numMipLevels Number of mipmap levels for each face
 480     *
 481     * Returns the surface ID (sid). Surfaces are generic
 482     * containers for host VRAM objects like textures, vertex
 483     * buffers, and depth/stencil buffers.
 484     *
 485     * Surfaces are hierarchial:
 486     *
 487     * - Surface may have multiple faces (for cube maps)
 488     *
 489     * - Each face has a list of mipmap levels
 490     *
 491     * - Each mipmap image may have multiple volume
 492     *   slices for 3D image, or multiple 2D slices for texture array.
 493     *
 494     * - Each slice is a 2D array of 'blocks'
 495     *
 496     * - Each block may be one or more pixels.
 497     *   (Usually 1, more for DXT or YUV formats.)
 498     *
 499     * Surfaces are generic host VRAM objects. The SVGA3D device
 500     * may optimize surfaces according to the format they were
 501     * created with, but this format does not limit the ways in
 502     * which the surface may be used. For example, a depth surface
 503     * can be used as a texture, or a floating point image may
 504     * be used as a vertex buffer. Some surface usages may be
 505     * lower performance, due to software emulation, but any
 506     * usage should work with any surface.
 507     */
 508    struct svga_winsys_surface *
 509    (*surface_create)(struct svga_winsys_screen *sws,
 510                      SVGA3dSurfaceFlags flags,
 511                      SVGA3dSurfaceFormat format,
 512                      unsigned usage,
 513                      SVGA3dSize size,
 514                      uint32 numLayers,
 515                      uint32 numMipLevels,
 516                      unsigned sampleCount);
 517
 518    /**
 519     * Creates a surface from a winsys handle.
 520     * Used to implement pipe_screen::resource_from_handle.
 521     */
 522    struct svga_winsys_surface *
 523    (*surface_from_handle)(struct svga_winsys_screen *sws,
 524                           struct winsys_handle *whandle,
 525                           SVGA3dSurfaceFormat *format);
 526
 527    /**
 528     * Get a winsys_handle from a surface.
 529     * Used to implement pipe_screen::resource_get_handle.
 530     */
 531    boolean
 532    (*surface_get_handle)(struct svga_winsys_screen *sws,
 533                          struct svga_winsys_surface *surface,
 534                          unsigned stride,
 535                          struct winsys_handle *whandle);
 536
 537    /**
 538     * Whether this surface is sitting in a validate list
 539     */
 540    boolean
 541    (*surface_is_flushed)(struct svga_winsys_screen *sws,
 542                          struct svga_winsys_surface *surface);
 543
 544    /**
 545     * Reference a SVGA3D surface object. This allows sharing of a
 546     * surface between different objects.
 547     */
 548    void
 549    (*surface_reference)(struct svga_winsys_screen *sws,
 550                         struct svga_winsys_surface **pdst,
 551                         struct svga_winsys_surface *src);
 552
 553    /**
 554     * Check if a resource (texture, buffer) of the given size
 555     * and format can be created.
 556     * \Return TRUE if OK, FALSE if too large.
 557     */
 558    boolean
 559    (*surface_can_create)(struct svga_winsys_screen *sws,
 560                          SVGA3dSurfaceFormat format,
 561                          SVGA3dSize size,
 562                          uint32 numLayers,
 563                          uint32 numMipLevels);
 564
 565    /**
 566     * Buffer management. Buffer attributes are mostly fixed over its lifetime.
 567     *
 568     * @param usage bitmask of SVGA_BUFFER_USAGE_* flags.
 569     *
 570     * alignment indicates the client's alignment requirements, eg for
 571     * SSE instructions.
 572     */
 573    struct svga_winsys_buffer *
 574    (*buffer_create)( struct svga_winsys_screen *sws,
 575                      unsigned alignment,
 576                      unsigned usage,
 577                      unsigned size );
 578
 579    /**
 580     * Map the entire data store of a buffer object into the client's address.
 581     * usage is a bitmask of PIPE_TRANSFER_*
 582     */
 583    void *
 584    (*buffer_map)( struct svga_winsys_screen *sws,
 585                   struct svga_winsys_buffer *buf,
 586                   unsigned usage );
 587
 588    void
 589    (*buffer_unmap)( struct svga_winsys_screen *sws,
 590                     struct svga_winsys_buffer *buf );
 591
 592    void
 593    (*buffer_destroy)( struct svga_winsys_screen *sws,
 594                       struct svga_winsys_buffer *buf );
 595
 596
 597    /**
 598     * Reference a fence object.
 599     */
 600    void
 601    (*fence_reference)( struct svga_winsys_screen *sws,
 602                        struct pipe_fence_handle **pdst,
 603                        struct pipe_fence_handle *src );
 604
 605    /**
 606     * Checks whether the fence has been signalled.
 607     * \param flags  driver-specific meaning
 608     * \return zero on success.
 609     */
 610    int (*fence_signalled)( struct svga_winsys_screen *sws,
 611                            struct pipe_fence_handle *fence,
 612                            unsigned flag );
 613
 614    /**
 615     * Wait for the fence to finish.
 616     * \param flags  driver-specific meaning
 617     * \return zero on success.
 618     */
 619    int (*fence_finish)( struct svga_winsys_screen *sws,
 620                         struct pipe_fence_handle *fence,
 621                         unsigned flag );
 622
 623
 624    /**
 625     ** BEGIN new functions for guest-backed surfaces.
 626     **/
 627
 628    /** Are guest-backed objects enabled? */
 629    bool have_gb_objects;
 630
 631    /** Can we do DMA with guest-backed objects enabled? */
 632    bool have_gb_dma;
 633
 634    /**
 635     * Create and define a GB shader.
 636     */
 637    struct svga_winsys_gb_shader *
 638    (*shader_create)(struct svga_winsys_screen *sws,
 639                     SVGA3dShaderType shaderType,
 640                     const uint32 *bytecode,
 641                     uint32 bytecodeLen);
 642
 643    /**
 644     * Destroy a GB shader. It's safe to call this function even
 645     * if the shader is referenced in a context's command stream.
 646     */
 647    void
 648    (*shader_destroy)(struct svga_winsys_screen *sws,
 649                      struct svga_winsys_gb_shader *shader);
 650
 651    /**
 652     * Create and define a GB query.
 653     */
 654    struct svga_winsys_gb_query *
 655    (*query_create)(struct svga_winsys_screen *sws, uint32 len);
 656
 657    /**
 658     * Destroy a GB query.
 659     */
 660    void
 661    (*query_destroy)(struct svga_winsys_screen *sws,
 662                     struct svga_winsys_gb_query *query);
 663
 664    /**
 665     * Initialize the query state of the query that resides in the slot
 666     * specified in offset
 667     * \return zero on success.
 668     */
 669    int
 670    (*query_init)(struct svga_winsys_screen *sws,
 671                        struct svga_winsys_gb_query *query,
 672                        unsigned offset,
 673                        SVGA3dQueryState queryState);
 674
 675    /**
 676     * Inquire for the query state and result of the query that resides
 677     * in the slot specified in offset
 678     */
 679    void
 680    (*query_get_result)(struct svga_winsys_screen *sws,
 681                        struct svga_winsys_gb_query *query,
 682                        unsigned offset,
 683                        SVGA3dQueryState *queryState,
 684                        void *result, uint32 resultLen);
 685
 686    /**
 687     * Increment a statistic counter
 688     */
 689    void
 690    (*stats_inc)(enum svga_stats_count);
 691
 692    /**
 693     * Push a time frame onto the stack
 694     */
 695    void
 696    (*stats_time_push)(enum svga_stats_time, struct svga_winsys_stats_timeframe *);
 697
 698    /**
 699     * Pop a time frame.
 700     */
 701    void
 702    (*stats_time_pop)();
 703
 704
 705    /** Have VGPU v10 hardware? */
 706    boolean have_vgpu10;
 707
 708    /** To rebind resources at the beginnning of a new command buffer */
 709    boolean need_to_rebind_resources;
 710
 711    boolean have_generate_mipmap_cmd;
 712    boolean have_set_predication_cmd;
 713    boolean have_transfer_from_buffer_cmd;
 714 };
 715
 716
 717 struct svga_winsys_screen *
 718 svga_winsys_screen(struct pipe_screen *screen);
 719
 720 struct svga_winsys_context *
 721 svga_winsys_context(struct pipe_context *context);
 722
 723 struct pipe_resource *
 724 svga_screen_buffer_wrap_surface(struct pipe_screen *screen,
 725                                 enum SVGA3dSurfaceFormat format,
 726                                 struct svga_winsys_surface *srf);
 727
 728 struct svga_winsys_surface *
 729 svga_screen_buffer_get_winsys_surface(struct pipe_resource *buffer);
 730
 731 #endif /* SVGA_WINSYS_H_ */