Shamusworld >> Repos - virtualjaguar/blob - src/include/zbmpop4.h

   1                 uint8   *paletteRam=&tom_ram_8[0x400];
   2                 paletteRam+=idx*4;
   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>>17));
  13                                                 if (!(cnt&(1<<16)))
  14                                                         c>>=4;
  15                                                 if (c)
  16                                                 {
  17                                                         *current_line_buffer--=BLEND_Y(*current_line_buffer,paletteRam[((c&0x0f)<<1)+0]);
  18                                                         *current_line_buffer--=BLEND_CC(*current_line_buffer,paletteRam[((c&0x0f)<<1)+1]);
  19                                                 }
  20                                                 else
  21                                                         current_line_buffer-=2;
  22                                                 cnt+=hscale_fixed;
  23                                                 scaled_width--;
  24                                         }
  25                                 }
  26                                 else
  27                                 {
  28                                         while (scaled_width)
  29                                         {
  30                                                 uint32 c=jaguar_byte_read(ptr+(cnt>>17));
  31                                                 if (!(cnt&(1<<16)))
  32                                                         c>>=4;
  33                                                 *current_line_buffer--=BLEND_Y(*current_line_buffer,paletteRam[((c&0x0f)<<1)+0]);
  34                                                 *current_line_buffer--=BLEND_CC(*current_line_buffer,paletteRam[((c&0x0f)<<1)+1]);
  35
  36                                                 cnt+=hscale_fixed;
  37                                                 scaled_width--;
  38                                         }
  39                                 }
  40                         }
  41                         else
  42                         {
  43                                 if (flags&FLAGS_TRANSPARENT)
  44                                 {
  45                                         while (scaled_width)
  46                                         {
  47                                                 uint32 c=jaguar_byte_read(ptr+(cnt>>17));
  48                                                 if (!(cnt&(1<<16)))
  49                                                         c>>=4;
  50                                                 if (c)
  51                                                 {
  52                                                         *current_line_buffer++=BLEND_Y(*current_line_buffer,paletteRam[((c&0x0f)<<1)+0]);
  53                                                         *current_line_buffer++=BLEND_CC(*current_line_buffer,paletteRam[((c&0x0f)<<1)+1]);
  54                                                 }
  55                                                 else
  56                                                         current_line_buffer+=2;
  57                                                 cnt+=hscale_fixed;
  58                                                 scaled_width--;
  59                                         }
  60                                 }
  61                                 else
  62                                 {
  63                                         while (scaled_width)
  64                                         {
  65                                                 uint32 c=jaguar_byte_read(ptr+(cnt>>17));
  66                                                 if (!(cnt&(1<<16)))
  67                                                         c>>=4;
  68                                                 *current_line_buffer++=BLEND_Y(*current_line_buffer,paletteRam[((c&0x0f)<<1)+0]);
  69                                                 *current_line_buffer++=BLEND_CC(*current_line_buffer,paletteRam[((c&0x0f)<<1)+1]);
  70
  71                                                 cnt+=hscale_fixed;
  72                                                 scaled_width--;
  73                                         }
  74                                 }
  75                         }
  76                 }
  77                 else
  78                 {
  79                         if (flags&FLAGS_HFLIP)
  80                         {
  81                                 if (flags&FLAGS_TRANSPARENT)
  82                                 {
  83                                         while (scaled_width)
  84                                         {
  85                                                 uint32 c=jaguar_byte_read(ptr+(cnt>>17));
  86                                                 if (!(cnt&(1<<16)))
  87                                                         c>>=4;
  88                                                 if (c)
  89                                                 {
  90                                                         *current_line_buffer--=paletteRam[((c&0x0f)<<1)+0];
  91                                                         *current_line_buffer--=paletteRam[((c&0x0f)<<1)+1];
  92                                                 }
  93                                                 else
  94                                                         current_line_buffer-=2;
  95                                                 cnt+=hscale_fixed;
  96                                                 scaled_width--;
  97                                         }
  98                                 }
  99                                 else
 100                                 {
 101                                         while (scaled_width)
 102                                         {
 103                                                 uint32 c=jaguar_byte_read(ptr+(cnt>>17));
 104                                                 if (!(cnt&(1<<16)))
 105                                                         c>>=4;
 106                                                 *current_line_buffer--=paletteRam[((c&0x0f)<<1)+0];
 107                                                 *current_line_buffer--=paletteRam[((c&0x0f)<<1)+1];
 108
 109                                                 cnt+=hscale_fixed;
 110                                                 scaled_width--;
 111                                         }
 112                                 }
 113                         }
 114                         else
 115                         {
 116                                 if (flags&FLAGS_TRANSPARENT)
 117                                 {
 118                                         while (scaled_width)
 119                                         {
 120                                                 uint32 c=jaguar_byte_read(ptr+(cnt>>17));
 121                                                 if (!(cnt&(1<<16)))
 122                                                         c>>=4;
 123                                                 if (c)
 124                                                 {
 125                                                         *current_line_buffer++=paletteRam[((c&0x0f)<<1)+0];
 126                                                         *current_line_buffer++=paletteRam[((c&0x0f)<<1)+1];
 127                                                 }
 128                                                 else
 129                                                         current_line_buffer+=2;
 130                                                 cnt+=hscale_fixed;
 131                                                 scaled_width--;
 132                                         }
 133                                 }
 134                                 else
 135                                 {
 136                                         while (scaled_width)
 137                                         {
 138                                                 uint32 c=jaguar_byte_read(ptr+(cnt>>17));
 139                                                 if (!(cnt&(1<<16)))
 140                                                         c>>=4;
 141                                                 *current_line_buffer++=paletteRam[((c&0x0f)<<1)+0];
 142                                                 *current_line_buffer++=paletteRam[((c&0x0f)<<1)+1];
 143
 144                                                 cnt+=hscale_fixed;
 145                                                 scaled_width--;
 146                                         }
 147                                 }
 148                         }
 149                 }