src/gallium/drivers/swr/rasterizer/core/api.h

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  22 *
  23 * @file api.h
  24 *
  25 * @brief API definitions
  26 *
  27 ******************************************************************************/
  28
  29 #ifndef __SWR_API_H__
  30 #define __SWR_API_H__
  31
  32 #include "common/os.h"
  33
  34 #include <assert.h>
  35 #include <algorithm>
  36
  37 #include "common/simdintrin.h"
  38 #include "common/formats.h"
  39 #include "core/state.h"
  40
  41 typedef void(SWR_API *PFN_CALLBACK_FUNC)(uint64_t data, uint64_t data2, uint64_t data3);
  42
  43 //////////////////////////////////////////////////////////////////////////
  44 /// @brief Rectangle structure
  45 struct SWR_RECT
  46 {
  47     int32_t xmin; ///< inclusive
  48     int32_t ymin; ///< inclusive
  49     int32_t xmax; ///< exclusive
  50     int32_t ymax; ///< exclusive
  51
  52     bool operator == (const SWR_RECT& rhs)
  53     {
  54         return (this->ymin == rhs.ymin &&
  55             this->ymax == rhs.ymax &&
  56             this->xmin == rhs.xmin &&
  57             this->xmax == rhs.xmax);
  58     }
  59
  60     bool operator != (const SWR_RECT& rhs)
  61     {
  62         return !(*this == rhs);
  63     }
  64
  65     SWR_RECT& Intersect(const SWR_RECT& other)
  66     {
  67         this->xmin = std::max(this->xmin, other.xmin);
  68         this->ymin = std::max(this->ymin, other.ymin);
  69         this->xmax = std::min(this->xmax, other.xmax);
  70         this->ymax = std::min(this->ymax, other.ymax);
  71
  72         if (xmax - xmin < 0 ||
  73             ymax - ymin < 0)
  74         {
  75             // Zero area
  76             ymin = ymax = xmin = xmax = 0;
  77         }
  78
  79         return *this;
  80     }
  81     SWR_RECT& operator &= (const SWR_RECT& other)
  82     {
  83         return Intersect(other);
  84     }
  85
  86     SWR_RECT& Union(const SWR_RECT& other)
  87     {
  88         this->xmin = std::min(this->xmin, other.xmin);
  89         this->ymin = std::min(this->ymin, other.ymin);
  90         this->xmax = std::max(this->xmax, other.xmax);
  91         this->ymax = std::max(this->ymax, other.ymax);
  92
  93         return *this;
  94     }
  95
  96     SWR_RECT& operator |= (const SWR_RECT& other)
  97     {
  98         return Union(other);
  99     }
 100
 101     void Translate(int32_t x, int32_t y)
 102     {
 103         xmin += x;
 104         ymin += y;
 105         xmax += x;
 106         ymax += y;
 107     }
 108 };
 109
 110 //////////////////////////////////////////////////////////////////////////
 111 /// @brief Function signature for load hot tiles
 112 /// @param hPrivateContext - handle to private data
 113 /// @param dstFormat - format of the hot tile
 114 /// @param renderTargetIndex - render target to store, can be color, depth or stencil
 115 /// @param x - destination x coordinate
 116 /// @param y - destination y coordinate
 117 /// @param pDstHotTile - pointer to the hot tile surface
 118 typedef void(SWR_API *PFN_LOAD_TILE)(HANDLE hPrivateContext, SWR_FORMAT dstFormat,
 119     SWR_RENDERTARGET_ATTACHMENT renderTargetIndex,
 120     uint32_t x, uint32_t y, uint32_t renderTargetArrayIndex, uint8_t *pDstHotTile);
 121
 122 //////////////////////////////////////////////////////////////////////////
 123 /// @brief Function signature for store hot tiles
 124 /// @param hPrivateContext - handle to private data
 125 /// @param srcFormat - format of the hot tile
 126 /// @param renderTargetIndex - render target to store, can be color, depth or stencil
 127 /// @param x - destination x coordinate
 128 /// @param y - destination y coordinate
 129 /// @param pSrcHotTile - pointer to the hot tile surface
 130 typedef void(SWR_API *PFN_STORE_TILE)(HANDLE hPrivateContext, SWR_FORMAT srcFormat,
 131     SWR_RENDERTARGET_ATTACHMENT renderTargetIndex,
 132     uint32_t x, uint32_t y, uint32_t renderTargetArrayIndex, uint8_t *pSrcHotTile);
 133
 134 //////////////////////////////////////////////////////////////////////////
 135 /// @brief Function signature for clearing from the hot tiles clear value
 136 /// @param hPrivateContext - handle to private data
 137 /// @param renderTargetIndex - render target to store, can be color, depth or stencil
 138 /// @param x - destination x coordinate
 139 /// @param y - destination y coordinate
 140 /// @param pClearColor - pointer to the hot tile's clear value
 141 typedef void(SWR_API *PFN_CLEAR_TILE)(HANDLE hPrivateContext,
 142     SWR_RENDERTARGET_ATTACHMENT rtIndex,
 143     uint32_t x, uint32_t y, const float* pClearColor);
 144
 145 //////////////////////////////////////////////////////////////////////////
 146 /// @brief Callback to allow driver to update their copy of streamout write offset.
 147 ///        This is call is made for any draw operation that has streamout enabled
 148 ///        and has updated the write offset.
 149 /// @param hPrivateContext - handle to private data
 150 /// @param soBufferSlot - buffer slot for write offset
 151 /// @param soWriteOffset - update value for so write offset.
 152 typedef void(SWR_API *PFN_UPDATE_SO_WRITE_OFFSET)(HANDLE hPrivateContext,
 153     uint32_t soBufferSlot, uint32_t soWriteOffset);
 154
 155 //////////////////////////////////////////////////////////////////////////
 156 /// @brief Callback to allow driver to update their copy of stats.
 157 /// @param hPrivateContext - handle to private data
 158 /// @param pStats - pointer to draw stats
 159 typedef void(SWR_API *PFN_UPDATE_STATS)(HANDLE hPrivateContext,
 160     const SWR_STATS* pStats);
 161
 162 //////////////////////////////////////////////////////////////////////////
 163 /// @brief Callback to allow driver to update their copy of FE stats.
 164 /// @note Its optimal to have a separate callback for FE stats since
 165 ///       there is only one DC per FE thread. This means we do not have
 166 ///       to sum up the stats across all of the workers.
 167 /// @param hPrivateContext - handle to private data
 168 /// @param pStats - pointer to draw stats
 169 typedef void(SWR_API *PFN_UPDATE_STATS_FE)(HANDLE hPrivateContext,
 170     const SWR_STATS_FE* pStats);
 171
 172 //////////////////////////////////////////////////////////////////////////
 173 /// BucketManager
 174 /// Forward Declaration (see rdtsc_buckets.h for full definition)
 175 /////////////////////////////////////////////////////////////////////////
 176 class BucketManager;
 177
 178 //////////////////////////////////////////////////////////////////////////
 179 /// SWR_THREADING_INFO
 180 /////////////////////////////////////////////////////////////////////////
 181 struct SWR_THREADING_INFO
 182 {
 183     uint32_t    MAX_WORKER_THREADS;
 184     uint32_t    MAX_NUMA_NODES;
 185     uint32_t    MAX_CORES_PER_NUMA_NODE;
 186     uint32_t    MAX_THREADS_PER_CORE;
 187     bool        SINGLE_THREADED;
 188 };
 189
 190 //////////////////////////////////////////////////////////////////////////
 191 /// SWR_CREATECONTEXT_INFO
 192 /////////////////////////////////////////////////////////////////////////
 193 struct SWR_CREATECONTEXT_INFO
 194 {
 195     DRIVER_TYPE driver;
 196
 197     // External functions (e.g. sampler) need per draw context state.
 198     // Use SwrGetPrivateContextState() to access private state.
 199     uint32_t privateStateSize;
 200
 201     // Callback functions
 202     PFN_LOAD_TILE               pfnLoadTile;
 203     PFN_STORE_TILE              pfnStoreTile;
 204     PFN_CLEAR_TILE              pfnClearTile;
 205     PFN_UPDATE_SO_WRITE_OFFSET  pfnUpdateSoWriteOffset;
 206     PFN_UPDATE_STATS            pfnUpdateStats;
 207     PFN_UPDATE_STATS_FE         pfnUpdateStatsFE;
 208
 209     // Pointer to rdtsc buckets mgr returned to the caller.
 210     // Only populated when KNOB_ENABLE_RDTSC is set
 211     BucketManager* pBucketMgr;
 212
 213     // Output: size required memory passed to for SwrSaveState / SwrRestoreState
 214     size_t  contextSaveSize;
 215
 216     // Input (optional): Threading info that overrides any set KNOB values.
 217     SWR_THREADING_INFO* pThreadInfo;
 218 };
 219
 220 //////////////////////////////////////////////////////////////////////////
 221 /// @brief Create SWR Context.
 222 /// @param pCreateInfo - pointer to creation info.
 223 HANDLE SWR_API SwrCreateContext(
 224     SWR_CREATECONTEXT_INFO* pCreateInfo);
 225
 226 //////////////////////////////////////////////////////////////////////////
 227 /// @brief Destroys SWR Context.
 228 /// @param hContext - Handle passed back from SwrCreateContext
 229 void SWR_API SwrDestroyContext(
 230     HANDLE hContext);
 231
 232 //////////////////////////////////////////////////////////////////////////
 233 /// @brief Saves API state associated with hContext
 234 /// @param hContext - Handle passed back from SwrCreateContext
 235 /// @param pOutputStateBlock - Memory block to receive API state data
 236 /// @param memSize - Size of memory pointed to by pOutputStateBlock
 237 void SWR_API SwrSaveState(
 238     HANDLE hContext,
 239     void* pOutputStateBlock,
 240     size_t memSize);
 241
 242 //////////////////////////////////////////////////////////////////////////
 243 /// @brief Restores API state to hContext previously saved with SwrSaveState
 244 /// @param hContext - Handle passed back from SwrCreateContext
 245 /// @param pStateBlock - Memory block to read API state data from
 246 /// @param memSize - Size of memory pointed to by pStateBlock
 247 void SWR_API SwrRestoreState(
 248     HANDLE hContext,
 249     const void* pStateBlock,
 250     size_t memSize);
 251
 252 //////////////////////////////////////////////////////////////////////////
 253 /// @brief Sync cmd. Executes the callback func when all rendering up to this sync
 254 ///        has been completed
 255 /// @param hContext - Handle passed back from SwrCreateContext
 256 /// @param pfnFunc - pointer to callback function,
 257 /// @param userData - user data to pass back
 258 void SWR_API SwrSync(
 259     HANDLE hContext,
 260     PFN_CALLBACK_FUNC pfnFunc,
 261     uint64_t userData,
 262     uint64_t userData2,
 263     uint64_t userData3 = 0);
 264
 265 //////////////////////////////////////////////////////////////////////////
 266 /// @brief Blocks until all rendering has been completed.
 267 /// @param hContext - Handle passed back from SwrCreateContext
 268 void SWR_API SwrWaitForIdle(
 269     HANDLE hContext);
 270
 271 //////////////////////////////////////////////////////////////////////////
 272 /// @brief Blocks until all FE rendering has been completed.
 273 /// @param hContext - Handle passed back from SwrCreateContext
 274 void SWR_API SwrWaitForIdleFE(
 275     HANDLE hContext);
 276
 277 //////////////////////////////////////////////////////////////////////////
 278 /// @brief Set vertex buffer state.
 279 /// @param hContext - Handle passed back from SwrCreateContext
 280 /// @param numBuffers - Number of vertex buffer state descriptors.
 281 /// @param pVertexBuffers - Array of vertex buffer state descriptors.
 282 void SWR_API SwrSetVertexBuffers(
 283     HANDLE hContext,
 284     uint32_t numBuffers,
 285     const SWR_VERTEX_BUFFER_STATE* pVertexBuffers);
 286
 287 //////////////////////////////////////////////////////////////////////////
 288 /// @brief Set index buffer
 289 /// @param hContext - Handle passed back from SwrCreateContext
 290 /// @param pIndexBuffer - Index buffer.
 291 void SWR_API SwrSetIndexBuffer(
 292     HANDLE hContext,
 293     const SWR_INDEX_BUFFER_STATE* pIndexBuffer);
 294
 295 //////////////////////////////////////////////////////////////////////////
 296 /// @brief Set fetch shader pointer.
 297 /// @param hContext - Handle passed back from SwrCreateContext
 298 /// @param pfnFetchFunc - Pointer to shader.
 299 void SWR_API SwrSetFetchFunc(
 300     HANDLE hContext,
 301     PFN_FETCH_FUNC    pfnFetchFunc);
 302
 303 //////////////////////////////////////////////////////////////////////////
 304 /// @brief Set streamout shader pointer.
 305 /// @param hContext - Handle passed back from SwrCreateContext
 306 /// @param pfnSoFunc - Pointer to shader.
 307 /// @param streamIndex - specifies stream
 308 void SWR_API SwrSetSoFunc(
 309     HANDLE hContext,
 310     PFN_SO_FUNC    pfnSoFunc,
 311     uint32_t streamIndex);
 312
 313 //////////////////////////////////////////////////////////////////////////
 314 /// @brief Set streamout state
 315 /// @param hContext - Handle passed back from SwrCreateContext
 316 /// @param pSoState - Pointer to streamout state.
 317 void SWR_API SwrSetSoState(
 318     HANDLE hContext,
 319     SWR_STREAMOUT_STATE* pSoState);
 320
 321 //////////////////////////////////////////////////////////////////////////
 322 /// @brief Set streamout buffer state
 323 /// @param hContext - Handle passed back from SwrCreateContext
 324 /// @param pSoBuffer - Pointer to streamout buffer.
 325 /// @param slot - Slot to bind SO buffer to.
 326 void SWR_API SwrSetSoBuffers(
 327     HANDLE hContext,
 328     SWR_STREAMOUT_BUFFER* pSoBuffer,
 329     uint32_t slot);
 330
 331 //////////////////////////////////////////////////////////////////////////
 332 /// @brief Set vertex shader pointer.
 333 /// @param hContext - Handle passed back from SwrCreateContext
 334 /// @param pfnVertexFunc - Pointer to shader.
 335 void SWR_API SwrSetVertexFunc(
 336     HANDLE hContext,
 337     PFN_VERTEX_FUNC pfnVertexFunc);
 338
 339 //////////////////////////////////////////////////////////////////////////
 340 /// @brief Set frontend state.
 341 /// @param hContext - Handle passed back from SwrCreateContext
 342 /// @param pState - Pointer to state
 343 void SWR_API SwrSetFrontendState(
 344     HANDLE hContext,
 345     SWR_FRONTEND_STATE *pState);
 346
 347 //////////////////////////////////////////////////////////////////////////
 348 /// @brief Set geometry shader state.
 349 /// @param hContext - Handle passed back from SwrCreateContext
 350 /// @param pState - Pointer to state
 351 void SWR_API SwrSetGsState(
 352     HANDLE hContext,
 353     SWR_GS_STATE *pState);
 354
 355 //////////////////////////////////////////////////////////////////////////
 356 /// @brief Set geometry shader
 357 /// @param hContext - Handle passed back from SwrCreateContext
 358 /// @param pState - Pointer to geometry shader function
 359 void SWR_API SwrSetGsFunc(
 360     HANDLE hContext,
 361     PFN_GS_FUNC pfnGsFunc);
 362
 363 //////////////////////////////////////////////////////////////////////////
 364 /// @brief Set compute shader
 365 /// @param hContext - Handle passed back from SwrCreateContext
 366 /// @param pfnCsFunc - Pointer to compute shader function
 367 /// @param totalThreadsInGroup - product of thread group dimensions.
 368 /// @param totalSpillFillSize - size in bytes needed for spill/fill.
 369 void SWR_API SwrSetCsFunc(
 370     HANDLE hContext,
 371     PFN_CS_FUNC pfnCsFunc,
 372     uint32_t totalThreadsInGroup,
 373     uint32_t totalSpillFillSize);
 374
 375 //////////////////////////////////////////////////////////////////////////
 376 /// @brief Set tessellation state.
 377 /// @param hContext - Handle passed back from SwrCreateContext
 378 /// @param pState - Pointer to state
 379 void SWR_API SwrSetTsState(
 380     HANDLE hContext,
 381     SWR_TS_STATE *pState);
 382
 383 //////////////////////////////////////////////////////////////////////////
 384 /// @brief Set hull shader
 385 /// @param hContext - Handle passed back from SwrCreateContext
 386 /// @param pfnFunc - Pointer to shader function
 387 void SWR_API SwrSetHsFunc(
 388     HANDLE hContext,
 389     PFN_HS_FUNC pfnFunc);
 390
 391 //////////////////////////////////////////////////////////////////////////
 392 /// @brief Set domain shader
 393 /// @param hContext - Handle passed back from SwrCreateContext
 394 /// @param pfnFunc - Pointer to shader function
 395 void SWR_API SwrSetDsFunc(
 396     HANDLE hContext,
 397     PFN_DS_FUNC pfnFunc);
 398
 399 //////////////////////////////////////////////////////////////////////////
 400 /// @brief Set depth stencil state
 401 /// @param hContext - Handle passed back from SwrCreateContext
 402 /// @param pState - Pointer to state.
 403 void SWR_API SwrSetDepthStencilState(
 404     HANDLE hContext,
 405     SWR_DEPTH_STENCIL_STATE *pState);
 406
 407 //////////////////////////////////////////////////////////////////////////
 408 /// @brief Set backend state
 409 /// @param hContext - Handle passed back from SwrCreateContext
 410 /// @param pState - Pointer to state.
 411 void SWR_API SwrSetBackendState(
 412     HANDLE hContext,
 413     SWR_BACKEND_STATE *pState);
 414
 415 //////////////////////////////////////////////////////////////////////////
 416 /// @brief Set pixel shader state
 417 /// @param hContext - Handle passed back from SwrCreateContext
 418 /// @param pState - Pointer to state.
 419 void SWR_API SwrSetPixelShaderState(
 420     HANDLE hContext,
 421     SWR_PS_STATE *pState);
 422
 423 //////////////////////////////////////////////////////////////////////////
 424 /// @brief Set blend state
 425 /// @param hContext - Handle passed back from SwrCreateContext
 426 /// @param pState - Pointer to state.
 427 void SWR_API SwrSetBlendState(
 428     HANDLE hContext,
 429     SWR_BLEND_STATE *pState);
 430
 431 //////////////////////////////////////////////////////////////////////////
 432 /// @brief Set blend function
 433 /// @param hContext - Handle passed back from SwrCreateContext
 434 /// @param renderTarget - render target index
 435 /// @param pfnBlendFunc - function pointer
 436 void SWR_API SwrSetBlendFunc(
 437     HANDLE hContext,
 438     uint32_t renderTarget,
 439     PFN_BLEND_JIT_FUNC pfnBlendFunc);
 440
 441 //////////////////////////////////////////////////////////////////////////
 442 /// @brief SwrDraw
 443 /// @param hContext - Handle passed back from SwrCreateContext
 444 /// @param topology - Specifies topology for draw.
 445 /// @param startVertex - Specifies start vertex in vertex buffer for draw.
 446 /// @param primCount - Number of vertices.
 447 void SWR_API SwrDraw(
 448     HANDLE hContext,
 449     PRIMITIVE_TOPOLOGY topology,
 450     uint32_t startVertex,
 451     uint32_t primCount);
 452
 453 //////////////////////////////////////////////////////////////////////////
 454 /// @brief SwrDrawInstanced
 455 /// @param hContext - Handle passed back from SwrCreateContext
 456 /// @param topology - Specifies topology for draw.
 457 /// @param numVertsPerInstance - How many vertices to read sequentially from vertex data.
 458 /// @param numInstances - How many instances to render.
 459 /// @param startVertex - Specifies start vertex for draw. (vertex data)
 460 /// @param startInstance - Which instance to start sequentially fetching from in each buffer (instanced data)
 461 void SWR_API SwrDrawInstanced(
 462     HANDLE hContext,
 463     PRIMITIVE_TOPOLOGY topology,
 464     uint32_t numVertsPerInstance,
 465     uint32_t numInstances,
 466     uint32_t startVertex,
 467     uint32_t startInstance);
 468
 469 //////////////////////////////////////////////////////////////////////////
 470 /// @brief DrawIndexed
 471 /// @param hContext - Handle passed back from SwrCreateContext
 472 /// @param topology - Specifies topology for draw.
 473 /// @param numIndices - Number of indices to read sequentially from index buffer.
 474 /// @param indexOffset - Starting index into index buffer.
 475 /// @param baseVertex - Vertex in vertex buffer to consider as index "0". Note value is signed.
 476 void SWR_API SwrDrawIndexed(
 477     HANDLE hContext,
 478     PRIMITIVE_TOPOLOGY topology,
 479     uint32_t numIndices,
 480     uint32_t indexOffset,
 481     int32_t baseVertex);
 482
 483 //////////////////////////////////////////////////////////////////////////
 484 /// @brief SwrDrawIndexedInstanced
 485 /// @param hContext - Handle passed back from SwrCreateContext
 486 /// @param topology - Specifies topology for draw.
 487 /// @param numIndices - Number of indices to read sequentially from index buffer.
 488 /// @param numInstances - Number of instances to render.
 489 /// @param indexOffset - Starting index into index buffer.
 490 /// @param baseVertex - Vertex in vertex buffer to consider as index "0". Note value is signed.
 491 /// @param startInstance - Which instance to start sequentially fetching from in each buffer (instanced data)
 492 void SWR_API SwrDrawIndexedInstanced(
 493     HANDLE hContext,
 494     PRIMITIVE_TOPOLOGY topology,
 495     uint32_t numIndices,
 496     uint32_t numInstances,
 497     uint32_t indexOffset,
 498     int32_t baseVertex,
 499     uint32_t startInstance);
 500
 501 //////////////////////////////////////////////////////////////////////////
 502 /// @brief SwrInvalidateTiles
 503 /// @param hContext - Handle passed back from SwrCreateContext
 504 /// @param attachmentMask - The mask specifies which surfaces attached to the hottiles to invalidate.
 505 /// @param invalidateRect - The pixel-coordinate rectangle to invalidate.  This will be expanded to
 506 ///                         be hottile size-aligned.
 507 void SWR_API SwrInvalidateTiles(
 508     HANDLE hContext,
 509     uint32_t attachmentMask,
 510     const SWR_RECT& invalidateRect);
 511
 512 //////////////////////////////////////////////////////////////////////////
 513 /// @brief SwrDiscardRect
 514 /// @param hContext - Handle passed back from SwrCreateContext
 515 /// @param attachmentMask - The mask specifies which surfaces attached to the hottiles to discard.
 516 /// @param rect - The pixel-coordinate rectangle to discard.  Only fully-covered hottiles will be
 517 ///               discarded.
 518 void SWR_API SwrDiscardRect(
 519     HANDLE hContext,
 520     uint32_t attachmentMask,
 521     const SWR_RECT& rect);
 522
 523 //////////////////////////////////////////////////////////////////////////
 524 /// @brief SwrDispatch
 525 /// @param hContext - Handle passed back from SwrCreateContext
 526 /// @param threadGroupCountX - Number of thread groups dispatched in X direction
 527 /// @param threadGroupCountY - Number of thread groups dispatched in Y direction
 528 /// @param threadGroupCountZ - Number of thread groups dispatched in Z direction
 529 void SWR_API SwrDispatch(
 530     HANDLE hContext,
 531     uint32_t threadGroupCountX,
 532     uint32_t threadGroupCountY,
 533     uint32_t threadGroupCountZ);
 534
 535
 536 enum SWR_TILE_STATE
 537 {
 538     SWR_TILE_INVALID    = 0,    // tile is in unitialized state and should be loaded with surface contents before rendering
 539     SWR_TILE_DIRTY      = 2,    // tile contains newer data than surface it represents
 540     SWR_TILE_RESOLVED   = 3,    // is in sync with surface it represents
 541 };
 542
 543 /// @todo Add a good description for what attachments are and when and why you would use the different SWR_TILE_STATEs.
 544 void SWR_API SwrStoreTiles(
 545     HANDLE hContext,
 546     SWR_RENDERTARGET_ATTACHMENT attachment,
 547     SWR_TILE_STATE postStoreTileState,
 548     const SWR_RECT& storeRect);
 549
 550
 551 //////////////////////////////////////////////////////////////////////////
 552 /// @brief SwrClearRenderTarget - Clear attached render targets / depth / stencil
 553 /// @param hContext - Handle passed back from SwrCreateContext
 554 /// @param clearMask - combination of SWR_CLEAR_COLOR / SWR_CLEAR_DEPTH / SWR_CLEAR_STENCIL flags (or SWR_CLEAR_NONE)
 555 /// @param clearColor - color use for clearing render targets
 556 /// @param z - depth value use for clearing depth buffer
 557 /// @param stencil - stencil value used for clearing stencil buffer
 558 /// @param clearRect - The pixel-coordinate rectangle to clear in all cleared buffers
 559 void SWR_API SwrClearRenderTarget(
 560     HANDLE hContext,
 561     uint32_t clearMask,
 562     const float clearColor[4],
 563     float z,
 564     uint8_t stencil,
 565     const SWR_RECT& clearRect);
 566
 567 //////////////////////////////////////////////////////////////////////////
 568 /// @brief SwrSetRastyState
 569 /// @param hContext - Handle passed back from SwrCreateContext
 570 /// @param pRastState - New SWR_RASTSTATE used for SwrDraw* commands
 571 void SWR_API SwrSetRastState(
 572     HANDLE hContext,
 573     const SWR_RASTSTATE *pRastState);
 574
 575 //////////////////////////////////////////////////////////////////////////
 576 /// @brief SwrSetViewports
 577 /// @param hContext - Handle passed back from SwrCreateContext
 578 /// @param numViewports - number of viewports passed in
 579 /// @param pViewports - Specifies extents of viewport.
 580 /// @param pMatrices - If not specified then SWR computes a default one.
 581 void SWR_API SwrSetViewports(
 582     HANDLE hContext,
 583     uint32_t numViewports,
 584     const SWR_VIEWPORT* pViewports,
 585     const SWR_VIEWPORT_MATRICES* pMatrices);
 586
 587 //////////////////////////////////////////////////////////////////////////
 588 /// @brief SwrSetScissorRects
 589 /// @param hContext - Handle passed back from SwrCreateContext
 590 /// @param numScissors - number of scissors passed in
 591 /// @param pScissors - array of scissors
 592 void SWR_API SwrSetScissorRects(
 593     HANDLE hContext,
 594     uint32_t numScissors,
 595     const SWR_RECT* pScissors);
 596
 597 //////////////////////////////////////////////////////////////////////////
 598 /// @brief Returns a pointer to the private context state for the current
 599 ///        draw operation. This is used for external componets such as the
 600 ///        sampler.
 601 ///
 602 /// @note  Client needs to resend private state prior to each draw call.
 603 ///        Also, SWR is responsible for the private state memory.
 604 /// @param hContext - Handle passed back from SwrCreateContext
 605 VOID* SWR_API SwrGetPrivateContextState(
 606     HANDLE hContext);
 607
 608 //////////////////////////////////////////////////////////////////////////
 609 /// @brief Clients can use this to allocate memory for draw/dispatch
 610 ///        operations. The memory will automatically be freed once operation
 611 ///        has completed. Client can use this to allocate binding tables,
 612 ///        etc. needed for shader execution.
 613 /// @param hContext - Handle passed back from SwrCreateContext
 614 /// @param size - Size of allocation
 615 /// @param align - Alignment needed for allocation.
 616 VOID* SWR_API SwrAllocDrawContextMemory(
 617     HANDLE hContext,
 618     uint32_t size,
 619     uint32_t align);
 620
 621 //////////////////////////////////////////////////////////////////////////
 622 /// @brief Enables stats counting
 623 /// @param hContext - Handle passed back from SwrCreateContext
 624 /// @param enable - If true then counts are incremented.
 625 void SWR_API SwrEnableStats(
 626     HANDLE hContext,
 627     bool enable);
 628
 629 //////////////////////////////////////////////////////////////////////////
 630 /// @brief Mark end of frame - used for performance profiling
 631 /// @param hContext - Handle passed back from SwrCreateContext
 632 void SWR_API SwrEndFrame(
 633     HANDLE hContext);
 634
 635 #endif//__SWR_API_H__