G3D/Drivers/SoftDrv/RENDER.H

   1 /****************************************************************************************/\r
   2 /*  render.h                                                                            */\r
   3 /*                                                                                      */\r
   4 /*  Author:       John Pollard, Ken Baird                                               */\r
   5 /*  Description:  header for render.c                                                   */\r
   6 /*                                                                                      */\r
   7 /*  The contents of this file are subject to the Genesis3D Public License               */\r
   8 /*  Version 1.01 (the "License"); you may not use this file except in                   */\r
   9 /*  compliance with the License. You may obtain a copy of the License at                */\r
  10 /*  http://www.genesis3d.com                                                            */\r
  11 /*                                                                                      */\r
  12 /*  Software distributed under the License is distributed on an "AS IS"                 */\r
  13 /*  basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See                */\r
  14 /*  the License for the specific language governing rights and limitations              */\r
  15 /*  under the License.                                                                  */\r
  16 /*                                                                                      */\r
  17 /*  The Original Code is Genesis3D, released March 25, 1999.                            */\r
  18 /*  Genesis3D Version 1.1 released November 15, 1999                                 */\r
  19 /*  Copyright (C) 1999 WildTangent, Inc. All Rights Reserved           */\r
  20 /*                                                                                      */\r
  21 /****************************************************************************************/\r
  22 #ifndef RENDER_H\r
  23 #define RENDER_H\r
  24 \r
  25 #include <Windows.h>\r
  26 \r
  27 #include "DCommon.h"\r
  28 #include "Span.h"\r
  29 #include "Register.h"\r
  30 \r
  31 #ifdef __cplusplus\r
  32 extern "C" {\r
  33 #endif\r
  34 \r
  35 typedef int32                   Fixed16;\r
  36 \r
  37 #define                                 ZBUFFER_PREC    (65536.0f * 65536.0f)\r
  38 //#define                               ZBUFFER_PREC    (32768.0f * 65536.0f)\r
  39 \r
  40 extern int32                            SpanMode;\r
  41 extern int32                            PolyMode;\r
  42 extern BOOL                             PolyIsTrans;\r
  43 \r
  44 extern BOOL                             PolyVisible;\r
  45 extern int32                            ActuallVisible;\r
  46 extern int32                            NumPixels;\r
  47 \r
  48 extern int32                            SMIN, SMAX;\r
  49 \r
  50 extern uint8                            GMipLevel;                              // Miplevel passed by the latest rendering routine\r
  51 extern int32                    GMipLevel4, GMipLevel20, GMipLevel4_8;\r
  52 extern int32                            GLMapAdd;\r
  53 extern DRV_LInfo                *GLInfo;\r
  54 extern DRV_Bitmap               *GBitmap;\r
  55 extern geRDriver_THandle        *GTexture;\r
  56 extern uint16                           *pScrPtr16bpp;\r
  57 \r
  58 extern int32                    GLightWidth;\r
  59 extern uint8                    *GLightData;\r
  60 \r
  61 extern int32                    DeltaX, Remaining, N_Runs, PixelCount;\r
  62 extern uint16                   *Source, *Dest;\r
  63 extern int32                    U2, V2, StepU, StepV;\r
  64 extern geFloat                  UDivZ, VDivZ, Zi, Z, Dx, Dy, PixelEnd;\r
  65 extern int32                    TxWhole, TyWhole, TxFract, TyFract;\r
  66 extern geFloat                  UDivZnStepX, VDivZnStepX, ZinStepX;\r
  67 extern int32                    Junk[2];\r
  68 \r
  69 extern geFloat                  Real16 ;        \r
  70 extern geFloat                  Real65536;\r
  71 \r
  72 extern int32                    U, V;\r
  73 \r
  74 extern int32                            GW, GWMask;\r
  75 extern int32                            GH, GHMask;\r
  76 extern uint8                            *GBitPtr;\r
  77 extern uint16                           *GBitPtr16;\r
  78 \r
  79 // 16bit zbuffer\r
  80 extern uint16                           *ZBuffer;\r
  81 \r
  82 extern geFloat                  UDivZStepX;\r
  83 extern geFloat                  UDivZStepY;\r
  84 extern geFloat                  VDivZStepX;\r
  85 extern geFloat                  VDivZStepY;\r
  86 \r
  87 extern geFloat                  UDivZOrigin;\r
  88 extern geFloat                  VDivZOrigin;\r
  89 extern geFloat                  UDivZ16StepX, VDivZ16StepX, Zi16StepX;\r
  90 extern geFloat                  UDivZ32StepX, VDivZ32StepX, Zi32StepX;\r
  91 \r
  92 extern geFloat                  ZiStepX;\r
  93 extern geFloat                  ZiStepY;\r
  94 extern geFloat                  ZiOrigin;\r
  95 \r
  96 extern Fixed16                  UAdjust;\r
  97 extern Fixed16                  VAdjust;\r
  98 extern Fixed16                  UAdjustL;\r
  99 extern Fixed16                  VAdjustL;\r
 100 extern Fixed16                  UAdjust1;\r
 101 extern Fixed16                  VAdjust1;\r
 102 extern Fixed16                  UAdjust2;\r
 103 extern Fixed16                  VAdjust2;\r
 104 \r
 105 extern Fixed16                  MaxU;\r
 106 extern Fixed16                  MaxV;\r
 107 \r
 108 #define ZBUFFER_SHIFT                           21\r
 109 #define ZBUFFER_RIGHT_SHIFT                     10\r
 110 \r
 111 // 16bit zbuffer\r
 112 extern uint16                   *ZBuffer;\r
 113 \r
 114 #ifdef __cplusplus\r
 115 }\r
 116 #endif\r
 117 \r
 118 BOOL RenderInit(DRV_Window *Window);\r
 119 BOOL RenderShutdown(void);\r
 120 void ClearZBuffer(DRV_Window *Window);\r
 121 \r
 122 // Render funtions\r
 123 BOOL DRIVERCC RenderGouraudPoly(DRV_TLVertex *Pnts, int32 NumPoints, uint32 Flags);\r
 124 BOOL DRIVERCC RenderWorldPoly(DRV_TLVertex *Pnts, int32 NumPoints, geRDriver_THandle *THandle, DRV_TexInfo *TexInfo, DRV_LInfo *LInfo, uint32 Flags);\r
 125 BOOL DRIVERCC RenderMiscTexturePoly(DRV_TLVertex *Pnts, int32 NumPoints, geRDriver_THandle *THandle, uint32 Flags);\r
 126 BOOL DRIVERCC DrawDecal(geRDriver_THandle *THandle, RECT *SRect, int32 x, int32 y);\r
 127 \r
 128 #endif\r