76 lines
2.6 KiB
C
76 lines
2.6 KiB
C
/****************************************************************************/
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// nbadisp.h
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//
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// RDP Bounds Accumulator display driver header.
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//
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// Copyright (C) 1997-2000 Microsoft Corporation
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/****************************************************************************/
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#ifndef _H_NBADISP
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#define _H_NBADISP
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// Maximum recursion level for splitting rectangles, after which merges are
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// done.
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#define ADDR_RECURSE_LIMIT 20
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#define MIN_OVERLAP_BYTES 100
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// The following constants are used to determine overlaps.
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// - OL_NONE through OL_MERGE_BOTTOM are return codes - which need to be
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// distinct from all possible outcode combinations - allowing for the
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// minus outcodes for enclosed cases.
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// - EE_XMIN through EE_YMAX are outcodes - which need to be uniquely
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// ORable binary constants within a single nibble.
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// - OL_ENCLOSED through OL_SPLIT_XMAX_YMAX are outcode combinations for
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// internal and external edge overlap cases.
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#define OL_NONE -1
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#define OL_MERGE_LEFT -2
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#define OL_MERGE_TOP -3
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#define OL_MERGE_RIGHT -4
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#define OL_MERGE_BOTTOM -5
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#define EE_LEFT 0x0001
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#define EE_TOP 0x0002
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#define EE_RIGHT 0x0004
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#define EE_BOTTOM 0x0008
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#define OL_ENCLOSED -(EE_LEFT | EE_TOP | EE_RIGHT | EE_BOTTOM)
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#define OL_PART_ENCLOSED_LEFT -(EE_LEFT | EE_TOP | EE_BOTTOM)
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#define OL_PART_ENCLOSED_TOP -(EE_LEFT | EE_TOP | EE_RIGHT)
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#define OL_PART_ENCLOSED_RIGHT -(EE_TOP | EE_RIGHT | EE_BOTTOM)
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#define OL_PART_ENCLOSED_BOTTOM -(EE_LEFT | EE_RIGHT | EE_BOTTOM)
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#define OL_ENCLOSES (EE_LEFT | EE_RIGHT | EE_TOP | EE_BOTTOM)
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#define OL_PART_ENCLOSES_LEFT (EE_RIGHT | EE_TOP | EE_BOTTOM)
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#define OL_PART_ENCLOSES_RIGHT (EE_LEFT | EE_TOP | EE_BOTTOM)
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#define OL_PART_ENCLOSES_TOP (EE_LEFT | EE_RIGHT | EE_BOTTOM)
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#define OL_PART_ENCLOSES_BOTTOM (EE_LEFT | EE_RIGHT | EE_TOP)
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#define OL_SPLIT_HORIZ (EE_TOP | EE_BOTTOM)
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#define OL_SPLIT_VERT (EE_LEFT | EE_RIGHT)
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#define OL_SPLIT_LEFT_TOP (EE_RIGHT | EE_BOTTOM)
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#define OL_SPLIT_RIGHT_TOP (EE_LEFT | EE_BOTTOM)
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#define OL_SPLIT_LEFT_BOTTOM (EE_RIGHT | EE_TOP)
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#define OL_SPLIT_RIGHT_BOTTOM (EE_LEFT | EE_TOP)
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/****************************************************************************/
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// Prototypes and inlines
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/****************************************************************************/
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void RDPCALL BA_DDInit(void);
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void RDPCALL BA_InitShm(void);
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void RDPCALL BA_AddScreenData(PRECTL);
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int RDPCALL BAOverlap(PRECTL, PRECTL);
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void RDPCALL BARemoveRectList(unsigned);
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BOOL RDPCALL BAAddRect(PRECTL, int);
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#endif /* _H_NBADISP */
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