G3D/Drivers/D3D8Drv/GSPAN.H

   1 /****************************************************************************************/\r
   2 /*  GSpan.h                                                                             */\r
   3 /*                                                                                      */\r
   4 /*  Author: John Pollard                                                                */\r
   5 /*  Description: Front to back span code                                                */\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 GSPAN\r
  23 #define GSPAN\r
  24 \r
  25 #include <Windows.h>\r
  26 \r
  27 #define MAX_SPAN_LINES                  1024\r
  28 #define MAX_SPANS                               35000\r
  29 \r
  30 typedef struct \r
  31 {\r
  32         int32   x1;                                                             // Starting x on screen\r
  33         int32   x2;                                                             // Ending x on screen\r
  34 } SPAN;\r
  35 \r
  36 typedef struct _SList\r
  37 {\r
  38     int32       Min, Max;\r
  39     uint8       Used;\r
  40     uint32      Flags;\r
  41     _SList      *Last;\r
  42     _SList      *Next;\r
  43 } SLIST;\r
  44 \r
  45 typedef struct\r
  46 {\r
  47         SLIST *First;\r
  48         SLIST *Current;\r
  49 } SPAN_MINMAX;\r
  50 \r
  51 extern  SPAN    SpanLines[MAX_SPAN_LINES];\r
  52 \r
  53 extern  SPAN_MINMAX     SMinMax[MAX_SPAN_LINES];                        // Linked list of spans for each scanline...\r
  54 extern  SLIST   ScanHash[MAX_SPANS];                                    // hash table for SList\r
  55 \r
  56 extern  int32           NumWorldPixels;\r
  57 extern  int32           NumSpans;\r
  58 extern  int32           NumSpanPixels[MAX_SPAN_LINES];\r
  59 extern  int32           PolysRendered;\r
  60 \r
  61 void    DRIVERCC EdgeOutNoUV (int32 x1, int32 y1, int32 x2, int32 y2);\r
  62 void    DRIVERCC AddSpanNoUV(int32 x1, int32 x2, int32 y);\r
  63 \r
  64 void    ResetSList(void);\r
  65 SLIST   *NewSList(void);\r
  66 void    ResetSpans(int32 Rows);\r
  67 \r
  68 #endif