void CopySpriteMasked(short* bitmap, int x, int y, int width, int height, short mask)
{
short* VRAM = (short*)0xA8000000;

int y_index;
int x_index;
short * base = y * 128*3 + x + VRAM;
for (y_index = height; y_index > 0; --y_index, base += 128*3 - width) {
for (x_index = width; x_index > 0; --x_index, ++base, ++bitmap) {
if (*bitmap != mask) *base = *bitmap;
}
}
}


void CopySpriteNbitMasked(const unsigned char* data, int x, int y, int width, int height, const short* palette, short maskColor, unsigned int bitwidth)
{
short* VRAM = (short*)0xA8000000; //ou color_t* VRAM = (color_t*) GetVRAMAddress();
int offset = 0;
int availbits ;
int j,i;
unsigned char buf;
short thiss;
short color;

VRAM += (128*3*y + x);
for(j=y; j<y+height; j++)
{
availbits = 0;

for(i=x; i<x+width; i++)
{
if (!availbits)
{
buf = data[offset++];
availbits = 8;
}
thiss = ((short)buf>>(8-bitwidth));
color = palette[thiss];
if(color != maskColor && i >= 0 && i<384)
{
*VRAM = color;
}
VRAM++;
buf<=bitwidth;
availbits-=bitwidth;
}
VRAM += (128*3-width);
}
}