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76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
// FIXME: Make these variables so we can also use modes like 800x600
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#define SCREEN_X 640
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#define SCREEN_Y 480
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#define SCREEN_STRIDE 80
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#define VGA_NORMAL 0
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#define VGA_AND 8
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#define VGA_OR 16
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#define VGA_XOR 24
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//This is in mingw standard headers
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//typedef struct { int quot, rem; } div_t;
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extern int maskbit[640];
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extern int y80[480];
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extern int xconv[640];
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extern int bit8[640];
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extern int startmasks[8];
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extern int endmasks[8];
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extern UCHAR PreCalcReverseByte[256];
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extern PBYTE vidmem;
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#define MISC 0x3c2
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#define SEQ 0x3c4
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#define CRTC 0x3d4
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#define GRAPHICS 0x3ce
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#define FEATURE 0x3da
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#define ATTRIB 0x3c0
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#define STATUS 0x3da
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typedef struct _VideoMode {
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unsigned short VidSeg;
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unsigned char Misc;
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unsigned char Feature;
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unsigned char Seq[5];
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unsigned char Crtc[25];
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unsigned char Gfx[9];
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unsigned char Attrib[21];
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} VideoMode;
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VOID vgaPreCalc(VOID);
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VOID vgaPutPixel(INT x, INT y, UCHAR c);
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VOID vgaPutByte(INT x, INT y, UCHAR c);
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VOID vgaGetByte(ULONG offset,
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UCHAR *b, UCHAR *g,
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UCHAR *r, UCHAR *i);
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INT vgaGetPixel(INT x, INT y);
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BOOL vgaHLine(INT x, INT y, INT len, UCHAR c);
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BOOL vgaVLine(INT x, INT y, INT len, UCHAR c);
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INT __cdecl abs(INT nm);
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BOOL VGADDIIntersectRect(PRECTL prcDst, PRECTL prcSrc1, PRECTL prcSrc2);
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#define SEQ_I 0x3C4 /* Sequencer Index */
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#define SEQ_D 0x3C5 /* Sequencer Data Register */
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#define GRA_I 0x3CE /* Graphics Controller Index */
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#define GRA_D 0x3CF /* Graphics Controller Data Register */
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#define LowByte(w) (*((unsigned char *)&(w) + 0))
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#define HighByte(w) (*((unsigned char *)&(w) + 1))
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#define ASSIGNVP4(x, y, vp) vp = vidmem /* VBUF */ + (((x) + (y)*SCREEN_X) >> 3);
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#define ASSIGNMK4(x, y, mask) mask = 0x80 >> ((x) & 7);
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void get_masks(int x, int w);
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#define mod8(n) ((n)&7)
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#define mod2(n) ((n)&1)
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void DIB_BltFromVGA(int x, int y, int w, int h, void *b, int Dest_lDelta);
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void DIB_BltToVGA(int x, int y, int w, int h, void *b, int Source_lDelta, int StartMod);
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void DIB_BltToVGAWithXlate(int x, int y, int w, int h, void *b, int Source_lDelta, XLATEOBJ* Xlate);
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void DIB_TransparentBltToVGA(int x, int y, int w, int h, void *b, int Source_lDelta, ULONG trans);
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