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Leaked source code of windows server 2003
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windows-server-2003/multimedia/directx/dxg/d3d/dx7/tnl/clipfunc.h

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  1. /*==========================================================================;
  2. *
  3. * Copyright (C) 1997 Microsoft Corporation. All Rights Reserved.
  4. *
  5. * File: clipfunc.h
  6. * Content: Clipper functions
  7. *
  8. ***************************************************************************/
  10. #ifndef _CLIPFUNC_H_
  11. #define _CLIPFUNC_H_
  13. #include "clipper.h"
  15. int ClipSingleLine(D3DFE_PROCESSVERTICES *pv,
  16. ClipTriangle *line,
  17. D3DRECTV *extent);
  19. HRESULT ProcessClippedPoints(D3DFE_PROCESSVERTICES*);
  20. HRESULT ProcessClippedTriangleList (D3DFE_PROCESSVERTICES*);
  21. HRESULT ProcessClippedTriangleStrip(D3DFE_PROCESSVERTICES *pv);
  22. HRESULT ProcessClippedTriangleFan (D3DFE_PROCESSVERTICES *pv);
  23. HRESULT ProcessClippedLine(D3DFE_PROCESSVERTICES *pv);
  24. HRESULT ProcessClippedIndexedTriangleStrip(D3DFE_PROCESSVERTICES *pv);
  25. HRESULT ProcessClippedIndexedTriangleFan (D3DFE_PROCESSVERTICES *pv);
  26. HRESULT ProcessClippedIndexedTriangleList (D3DFE_PROCESSVERTICES *pv);
  27. HRESULT ProcessClippedIndexedLine(D3DFE_PROCESSVERTICES *pv);
  28. DWORD D3DFE_GenClipFlags(D3DFE_PROCESSVERTICES *pv);
  30. //---------------------------------------------------------------------
  31. // This function is called by the clipper to draw unclipped part of a primitive
  32. //
  33. inline HRESULT DRAW_PRIM(D3DFE_PROCESSVERTICES *pv,
  34. D3DPRIMITIVETYPE primitiveType,
  35. LPVOID startVertex, DWORD vertexCount, DWORD numPrim)
  36. {
  37. pv->lpvOut = startVertex;
  38. pv->primType = primitiveType;
  39. pv->dwNumVertices = vertexCount;
  40. pv->dwNumPrimitives = numPrim;
  41. return pv->DrawPrim();
  42. }
  43. //---------------------------------------------------------------------
  44. // This function is called by the clipper to draw clipped part of a primitive
  45. //
  46. inline HRESULT DRAW_CLIPPED_PRIM(D3DFE_PROCESSVERTICES *pv,
  47. D3DPRIMITIVETYPE primitiveType,
  48. LPVOID startVertex, DWORD vertexCount, DWORD numPrim)
  49. {
  50. pv->lpvOut = startVertex;
  51. pv->primType = primitiveType;
  52. pv->dwNumVertices = vertexCount;
  53. pv->dwNumPrimitives = numPrim;
  54. return pv->DrawClippedPrim();
  55. }
  56. //---------------------------------------------------------------------
  57. // This function is called by the clipper to draw unclipped part of an
  58. // indexed primitive
  59. //
  60. inline HRESULT DRAW_INDEX_PRIM(D3DFE_PROCESSVERTICES *pv,
  61. D3DPRIMITIVETYPE primitiveType,
  62. LPWORD startIndex, DWORD vertexCount, DWORD numPrim)
  63. {
  64. pv->lpwIndices = startIndex;
  65. pv->primType = primitiveType;
  66. pv->dwNumIndices = vertexCount;
  67. pv->dwNumPrimitives = numPrim;
  68. return pv->DrawIndexPrim();
  69. }
  70. //----------------------------------------------------------------------
  71. // Clip a triangle made by 3 vertices
  72. // bCanModifyVertices is set to TRUE, if the function can modify the original
  73. // vertices
  74. //
  75. HRESULT Clip(D3DFE_PROCESSVERTICES *pv, ClipVertex *cv1, ClipVertex *cv2, ClipVertex *cv3);
  76. HRESULT ClipLine(D3DFE_PROCESSVERTICES *pv, ClipVertex *cv1, ClipVertex *cv2);
  78. #endif // _CLIPFUNC_H_