I think you put your answer inside the quote Eiyeron
I think I should miswrite somewhere: I request the help from someone to make this function...
Anyway, my function for my project
Two pixels are concatened like this:
0bAAAABBBB
or
0xAB
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| void CopySprite_Palette_Alpha_Nibbles(unsigned char* data, unsigned short* palette, int x, int y, int width, int height) {
unsigned short* VRAM = (unsigned short*)0xA8000000;
unsigned short* ptr = VRAM + y*LCD_WIDTH_PX + x;
int i,j;
unsigned char nibble; //Get the color's index to use.
for(j=0; j<height; j++) {
for(i = 0; i < width; i+=2)
{
nibble = (*data)>>4; We get the first pixel
if(nibble) //First index is alpha.
*ptr = palette[nibble]; //COpy from the palette
nibble = (*data) %16; We get the second pixel
if(nibble) //On the road again
*(ptr+1) = palette[nibble];
/* else
*(ptr+1) = palette[0];*/ // FOr tests
ptr+=2; //We go furtherer on the VRAM
data++; //Idem
}
ptr += LCD_WIDTH_PX-width; // Go one line lower.
}
} |
Max 16 colours, enough for Pokémons, in example... :-°
First index is alpha
(Could you please too adapt this function to add a zoom factor, please? I would be erternally grateful)
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