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716 lvd 1 
#include "std.h"
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#include "emul.h"
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#include "vars.h"
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#include "draw.h"
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#include "dxr_atmf.h"
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#include "dxr_atm0.h"
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static const int ega0_ofs = -4*int(PAGE);
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static const int ega1_ofs = 0;
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static const int ega2_ofs = -4*int(PAGE)+0x2000;
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static const int ega3_ofs = 0x2000;
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static void line_atm0_8(unsigned char *dst, unsigned char *src, unsigned *tab, int src_offset)
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{
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    u8 *d = (u8 *)dst;
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    for (unsigned x = 0; x < 320; x += 8, ++src_offset)
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    {
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        src_offset &= 0x1FFF;
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        d[x+0] = tab[src[ega0_ofs + src_offset]];
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        d[x+1] = tab[src[ega0_ofs + src_offset]] >> 16;
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        d[x+2] = tab[src[ega1_ofs + src_offset]];
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        d[x+3] = tab[src[ega1_ofs + src_offset]] >> 16;
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        d[x+4] = tab[src[ega2_ofs + src_offset]];
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        d[x+5] = tab[src[ega2_ofs + src_offset]] >> 16;
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        d[x+6] = tab[src[ega3_ofs + src_offset]];
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        d[x+7] = tab[src[ega3_ofs + src_offset]] >> 16;
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    }
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}
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static void line_atm0_8d(unsigned char *dst, unsigned char *src, unsigned *tab, int src_offset)
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{
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    u32 *d = (u32 *)dst;
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    for (unsigned x = 0; x < 640/4; x += 4, ++src_offset)
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    {
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        src_offset &= 0x1FFF;
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        d[x+0] = tab[src[ega0_ofs + src_offset]];
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        d[x+1] = tab[src[ega1_ofs + src_offset]];
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        d[x+2] = tab[src[ega2_ofs + src_offset]];
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        d[x+3] = tab[src[ega3_ofs + src_offset]];
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    }
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}
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static void line_atm0_16(unsigned char *dst, unsigned char *src, unsigned *tab, int src_offset)
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{
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    u16 *d = (u16 *)dst;
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    for (unsigned x = 0; x < 320; x += 8, ++src_offset)
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    {
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        src_offset &= 0x1FFF;
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        d[x+0] = tab[0+2*src[ega0_ofs + src_offset]];
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        d[x+1] = tab[1+2*src[ega0_ofs + src_offset]];
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        d[x+2] = tab[0+2*src[ega1_ofs + src_offset]];
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        d[x+3] = tab[1+2*src[ega1_ofs + src_offset]];
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        d[x+4] = tab[0+2*src[ega2_ofs + src_offset]];
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        d[x+5] = tab[1+2*src[ega2_ofs + src_offset]];
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        d[x+6] = tab[0+2*src[ega3_ofs + src_offset]];
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        d[x+7] = tab[1+2*src[ega3_ofs + src_offset]];
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    }
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}
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static void line_atm0_16d(unsigned char *dst, unsigned char *src, unsigned *tab, int src_offset)
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{
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    u32 *d = (u32 *)dst;
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    for (unsigned x = 0; x < 640/2; x += 8, ++src_offset)
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    {
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        src_offset &= 0x1FFF;
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        d[x+0] = tab[0+2*src[ega0_ofs + src_offset]];
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        d[x+1] = tab[1+2*src[ega0_ofs + src_offset]];
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        d[x+2] = tab[0+2*src[ega1_ofs + src_offset]];
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        d[x+3] = tab[1+2*src[ega1_ofs + src_offset]];
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        d[x+4] = tab[0+2*src[ega2_ofs + src_offset]];
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        d[x+5] = tab[1+2*src[ega2_ofs + src_offset]];
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        d[x+6] = tab[0+2*src[ega3_ofs + src_offset]];
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        d[x+7] = tab[1+2*src[ega3_ofs + src_offset]];
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    }
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}
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static void line_atm0_32(unsigned char *dst, unsigned char *src, unsigned *tab, int src_offset)
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{
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    u32 *d = (u32 *)dst;
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    for (unsigned x = 0; x < 320; x += 8, ++src_offset)
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    {
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        src_offset &= 0x1FFF;
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        d[x+0] = tab[0+2*src[ega0_ofs + src_offset]];
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        d[x+1] = tab[1+2*src[ega0_ofs + src_offset]];
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        d[x+2] = tab[0+2*src[ega1_ofs + src_offset]];
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        d[x+3] = tab[1+2*src[ega1_ofs + src_offset]];
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        d[x+4] = tab[0+2*src[ega2_ofs + src_offset]];
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        d[x+5] = tab[1+2*src[ega2_ofs + src_offset]];
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        d[x+6] = tab[0+2*src[ega3_ofs + src_offset]];
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        d[x+7] = tab[1+2*src[ega3_ofs + src_offset]];
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    }
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}
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static void line_atm0_32d(unsigned char *dst, unsigned char *src, unsigned *tab, int src_offset)
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{
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    u32 *d = (u32 *)dst;
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    for (unsigned x = 0; x < 640; x += 16, ++src_offset)
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    {
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        src_offset &= 0x1FFF;
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        d[x+0]  = d[x+1]  = tab[0+2*src[ega0_ofs + src_offset]];
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        d[x+2]  = d[x+3]  = tab[1+2*src[ega0_ofs + src_offset]];
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        d[x+4]  = d[x+5]  = tab[0+2*src[ega1_ofs + src_offset]];
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        d[x+6]  = d[x+7]  = tab[1+2*src[ega1_ofs + src_offset]];
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        d[x+8]  = d[x+9]  = tab[0+2*src[ega2_ofs + src_offset]];
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        d[x+10] = d[x+11] = tab[1+2*src[ega2_ofs + src_offset]];
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        d[x+12] = d[x+13] = tab[0+2*src[ega3_ofs + src_offset]];
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        d[x+14] = d[x+15] = tab[1+2*src[ega3_ofs + src_offset]];
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    }
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}
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void rend_atm0_small(unsigned char *dst, unsigned pitch, int y, int Offset)
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{
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    unsigned char *dst2 = dst + (temp.ox-320)*temp.obpp/16;
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    if (temp.scy > 200)
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        dst2 += (temp.scy-200)/2*pitch * ((temp.oy > temp.scy)?2:1);
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    dst2 += y*pitch;
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    switch(temp.obpp)
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    {
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    case 8:
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        line_atm0_8(dst2, temp.base, t.p4bpp8[0], Offset);
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        dst2 += pitch;
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        break;
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    case 16:
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        line_atm0_16(dst2, temp.base, t.p4bpp16[0], Offset);
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        dst2 += pitch;
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        break;
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    case 32:
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        line_atm0_32(dst2, temp.base, t.p4bpp32[0], Offset);
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        dst2 += pitch;
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        break;
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    }
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}
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// EGA 320x200, double
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void rend_atm0(unsigned char *dst, unsigned pitch, int y, int Offset)
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{
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    unsigned char *dst2 = dst + (temp.ox-640)*temp.obpp/16;
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    if (temp.scy > 200)
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        dst2 += (temp.scy-200)/2*pitch * ((temp.oy > temp.scy)?2:1);
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    if(conf.fast_sl)
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    {
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        dst2 += y*pitch;
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        switch(temp.obpp)
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        {
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        case 8:
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            line_atm0_8d(dst2, temp.base, t.p4bpp8[0], Offset);
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            break;
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        case 16:
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            line_atm0_16d(dst2, temp.base, t.p4bpp16[0], Offset);
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            break;
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        case 32:
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            line_atm0_32d(dst2, temp.base, t.p4bpp32[0], Offset);
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            break;
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        }
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    }
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    else
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    {
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        dst2 += 2*y*pitch;
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        switch(temp.obpp)
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        {
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        case 8:
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            line_atm0_8d(dst2, temp.base, t.p4bpp8[0], Offset);
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            dst2 += pitch;
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            line_atm0_8d(dst2, temp.base, t.p4bpp8[1], Offset);
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            break;
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        case 16:
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            line_atm0_16d(dst2, temp.base, t.p4bpp16[0], Offset);
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            dst2 += pitch;
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            line_atm0_16d(dst2, temp.base, t.p4bpp16[1], Offset);
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            break;
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        case 32:
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            line_atm0_32d(dst2, temp.base, t.p4bpp32[0], Offset);
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            dst2 += pitch;
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            line_atm0_32d(dst2, temp.base, t.p4bpp32[1], Offset);
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            break;
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        }
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    }
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}