Shamusworld >> Repos - virtualjaguar/blob - src/include/zbmpop2p.h

   1                 uint8   *paletteRam=&tom_ram_8[0x400];
   2                 paletteRam+=idx*2;
   3
   4                 if (flags&FLAGS_READMODIFY)
   5                 {
   6                         if (flags&FLAGS_HFLIP)
   7                         {
   8                                 if (flags&FLAGS_TRANSPARENT)
   9                                 {
  10                                         while (scaled_width)
  11                                         {
  12                                                 uint32 c=jaguar_byte_read(ptr+(((cnt>>16) & (~0x1f))*pitch)+((cnt>>16)&0x1f));
  13                                                 c>>=(6-(2*((cnt>>16)&0x03)));
  14                                                 c&=0x03;
  15
  16                                                 if (c)
  17                                                 {
  18                                                         *current_line_buffer--=BLEND_Y(*current_line_buffer,paletteRam[((c&0x03)<<1)+0]);
  19                                                         *current_line_buffer--=BLEND_CC(*current_line_buffer,paletteRam[((c&0x03)<<1)+1]);
  20                                                 }
  21                                                 else
  22                                                         current_line_buffer-=2;
  23                                                 cnt+=hscale_fixed;
  24                                                 scaled_width--;
  25                                         }
  26                                 }
  27                                 else
  28                                 {
  29                                         while (scaled_width)
  30                                         {
  31                                                 uint32 c=jaguar_byte_read(ptr+(((cnt>>16) & (~0x1f))*pitch)+((cnt>>16)&0x1f));
  32                                                 c>>=(6-(2*((cnt>>16)&0x03)));
  33                                                 c&=0x03;
  34                                                 *current_line_buffer--=BLEND_Y(*current_line_buffer,paletteRam[((c&0x03)<<1)+0]);
  35                                                 *current_line_buffer--=BLEND_CC(*current_line_buffer,paletteRam[((c&0x03)<<1)+1]);
  36
  37                                                 cnt+=hscale_fixed;
  38                                                 scaled_width--;
  39                                         }
  40                                 }
  41                         }
  42                         else
  43                         {
  44                                 if (flags&FLAGS_TRANSPARENT)
  45                                 {
  46                                         while (scaled_width)
  47                                         {
  48                                                 uint32 c=jaguar_byte_read(ptr+(((cnt>>16) & (~0x1f))*pitch)+((cnt>>16)&0x1f));
  49                                                 c>>=(6-(2*((cnt>>16)&0x03)));
  50                                                 c&=0x03;
  51                                                 if (c)
  52                                                 {
  53                                                         *current_line_buffer++=BLEND_Y(*current_line_buffer,paletteRam[((c&0x03)<<1)+0]);
  54                                                         *current_line_buffer++=BLEND_CC(*current_line_buffer,paletteRam[((c&0x03)<<1)+1]);
  55                                                 }
  56                                                 else
  57                                                         current_line_buffer+=2;
  58                                                 cnt+=hscale_fixed;
  59                                                 scaled_width--;
  60                                         }
  61                                 }
  62                                 else
  63                                 {
  64                                         while (scaled_width)
  65                                         {
  66                                                 uint32 c=jaguar_byte_read(ptr+(((cnt>>16) & (~0x1f))*pitch)+((cnt>>16)&0x1f));
  67                                                 c>>=(6-(2*((cnt>>16)&0x03)));
  68                                                 c&=0x03;
  69                                                 *current_line_buffer++=BLEND_Y(*current_line_buffer,paletteRam[((c&0x03)<<1)+0]);
  70                                                 *current_line_buffer++=BLEND_CC(*current_line_buffer,paletteRam[((c&0x03)<<1)+1]);
  71
  72                                                 cnt+=hscale_fixed;
  73                                                 scaled_width--;
  74                                         }
  75                                 }
  76                         }
  77                 }
  78                 else
  79                 {
  80                         if (flags&FLAGS_HFLIP)
  81                         {
  82                                 if (flags&FLAGS_TRANSPARENT)
  83                                 {
  84                                         while (scaled_width)
  85                                         {
  86                                                 uint32 c=jaguar_byte_read(ptr+(((cnt>>16) & (~0x1f))*pitch)+((cnt>>16)&0x1f));
  87                                                 c>>=(6-(2*((cnt>>16)&0x03)));
  88                                                 c&=0x03;
  89                                                 if (c)
  90                                                 {
  91                                                         *current_line_buffer--=paletteRam[((c&0x03)<<1)+0];
  92                                                         *current_line_buffer--=paletteRam[((c&0x03)<<1)+1];
  93                                                 }
  94                                                 else
  95                                                         current_line_buffer-=2;
  96                                                 cnt+=hscale_fixed;
  97                                                 scaled_width--;
  98                                         }
  99                                 }
 100                                 else
 101                                 {
 102                                         while (scaled_width)
 103                                         {
 104                                                 uint32 c=jaguar_byte_read(ptr+(((cnt>>16) & (~0x1f))*pitch)+((cnt>>16)&0x1f));
 105                                                 c>>=(6-(2*((cnt>>16)&0x03)));
 106                                                 c&=0x03;
 107                                                 *current_line_buffer--=paletteRam[((c&0x03)<<1)+0];
 108                                                 *current_line_buffer--=paletteRam[((c&0x03)<<1)+1];
 109
 110                                                 cnt+=hscale_fixed;
 111                                                 scaled_width--;
 112                                         }
 113                                 }
 114                         }
 115                         else
 116                         {
 117                                 if (flags&FLAGS_TRANSPARENT)
 118                                 {
 119                                         while (scaled_width)
 120                                         {
 121                                                 uint32 c=jaguar_byte_read(ptr+(((cnt>>16) & (~0x1f))*pitch)+((cnt>>16)&0x1f));
 122                                                 c>>=(6-(2*((cnt>>16)&0x03)));
 123                                                 c&=0x03;
 124                                                 if (c)
 125                                                 {
 126                                                         *current_line_buffer++=paletteRam[((c&0x03)<<1)+0];
 127                                                         *current_line_buffer++=paletteRam[((c&0x03)<<1)+1];
 128                                                 }
 129                                                 else
 130                                                         current_line_buffer+=2;
 131                                                 cnt+=hscale_fixed;
 132                                                 scaled_width--;
 133                                         }
 134                                 }
 135                                 else
 136                                 {
 137                                         while (scaled_width)
 138                                         {
 139                                                 uint32 c=jaguar_byte_read(ptr+(((cnt>>16) & (~0x1f))*pitch)+((cnt>>16)&0x1f));
 140                                                 c>>=(6-(2*((cnt>>16)&0x03)));
 141                                                 c&=0x03;
 142                                                 *current_line_buffer++=paletteRam[((c&0x03)<<1)+0];
 143                                                 *current_line_buffer++=paletteRam[((c&0x03)<<1)+1];
 144
 145                                                 cnt+=hscale_fixed;
 146                                                 scaled_width--;
 147                                         }
 148                                 }
 149                         }
 150                 }