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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;
784 DimkaM 20 
        d[x+0] = u8(tab[src[ega0_ofs + src_offset]]);
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        d[x+1] = u8(tab[src[ega0_ofs + src_offset]] >> 16);
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        d[x+2] = u8(tab[src[ega1_ofs + src_offset]]);
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        d[x+3] = u8(tab[src[ega1_ofs + src_offset]] >> 16);
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        d[x+4] = u8(tab[src[ega2_ofs + src_offset]]);
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        d[x+5] = u8(tab[src[ega2_ofs + src_offset]] >> 16);
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        d[x+6] = u8(tab[src[ega3_ofs + src_offset]]);
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        d[x+7] = u8(tab[src[ega3_ofs + src_offset]] >> 16);
716 lvd 28 
    }
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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;
784 DimkaM 50 
        d[x+0] = u16(tab[0+2*src[ega0_ofs + src_offset]]);
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        d[x+1] = u16(tab[1+2*src[ega0_ofs + src_offset]]);
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        d[x+2] = u16(tab[0+2*src[ega1_ofs + src_offset]]);
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        d[x+3] = u16(tab[1+2*src[ega1_ofs + src_offset]]);
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        d[x+4] = u16(tab[0+2*src[ega2_ofs + src_offset]]);
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        d[x+5] = u16(tab[1+2*src[ega2_ofs + src_offset]]);
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        d[x+6] = u16(tab[0+2*src[ega3_ofs + src_offset]]);
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        d[x+7] = u16(tab[1+2*src[ega3_ofs + src_offset]]);
716 lvd 58 
    }
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}
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61 
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)
79 
{
80 
    u32 *d = (u32 *)dst;
81 
    for (unsigned x = 0; x < 320; x += 8, ++src_offset)
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    {
83 
        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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95 
static void line_atm0_32d(unsigned char *dst, unsigned char *src, unsigned *tab, int src_offset)
96 
{
97 
    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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784 DimkaM 112 
void rend_atm0_small(unsigned char *dst, unsigned pitch, unsigned y, int Offset)
716 lvd 113 
{
114 
    unsigned char *dst2 = dst + (temp.ox-320)*temp.obpp/16;
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    if (temp.scy > 200)
116 
        dst2 += (temp.scy-200)/2*pitch * ((temp.oy > temp.scy)?2:1);
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118 
    dst2 += y*pitch;
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    switch(temp.obpp)
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    {
121 
    case 8:
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        line_atm0_8(dst2, temp.base, t.p4bpp8[0], Offset);
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        dst2 += pitch;
124 
        break;
125 
    case 16:
126 
        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:
130 
        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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136 
// EGA 320x200, double
784 DimkaM 137 
void rend_atm0(unsigned char *dst, unsigned pitch, unsigned y, int Offset)
716 lvd 138 
{
139 
    unsigned char *dst2 = dst + (temp.ox-640)*temp.obpp/16;
140 
    if (temp.scy > 200)
141 
        dst2 += (temp.scy-200)/2*pitch * ((temp.oy > temp.scy)?2:1);
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143 
    if(conf.fast_sl)
144 
    {
145 
        dst2 += y*pitch;
146 
        switch(temp.obpp)
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        {
148 
        case 8:
149 
            line_atm0_8d(dst2, temp.base, t.p4bpp8[0], Offset);
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            break;
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        case 16:
152 
            line_atm0_16d(dst2, temp.base, t.p4bpp16[0], Offset);
153 
            break;
154 
        case 32:
155 
            line_atm0_32d(dst2, temp.base, t.p4bpp32[0], Offset);
156 
            break;
157 
        }
158 
    }
159 
    else
160 
    {
784 DimkaM 161 
        dst2 += unsigned(2*y)*pitch;
716 lvd 162 
        switch(temp.obpp)
163 
        {
164 
        case 8:
165 
            line_atm0_8d(dst2, temp.base, t.p4bpp8[0], Offset);
166 
            dst2 += pitch;
167 
            line_atm0_8d(dst2, temp.base, t.p4bpp8[1], Offset);
168 
            break;
169 
        case 16:
170 
            line_atm0_16d(dst2, temp.base, t.p4bpp16[0], Offset);
171 
            dst2 += pitch;
172 
            line_atm0_16d(dst2, temp.base, t.p4bpp16[1], Offset);
173 
            break;
174 
        case 32:
175 
            line_atm0_32d(dst2, temp.base, t.p4bpp32[0], Offset);
176 
            dst2 += pitch;
177 
            line_atm0_32d(dst2, temp.base, t.p4bpp32[1], Offset);
178 
            break;
179 
        }
180 
    }
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}