DIRECT DRAW PIXEL 8,16 OU 32 BITS TEST

void pix(int x,int y,int r,int g,int b)
{

if(r<0) r=0;
if(g<0) g=0;
if(b<0) b=0;

if(r>255) r=255;
if(g>255) g=255;
if(b>255) b=255;

if(y>Y) y=Y-1;
if(x>X) x=X-1;
if(y<0) y=1;
if(x<0) x=1;


UCHAR *primary_buffer = (UCHAR *)Ddsd.lpSurface;   

if (pixel_format == 32)
   {
         DWORD color = _RGB32BIT(0,r, g, b);
        *((DWORD *)(primary_buffer + x*4 + y*Ddsd.lPitch)) = color;

    } 

else
if (pixel_format == 24)
   {
        ((primary_buffer + x*3 + y*Ddsd.lPitch))[0] = r;
        ((primary_buffer + x*3 + y*Ddsd.lPitch))[1] = g;
        ((primary_buffer + x*3 + y*Ddsd.lPitch))[2] = b;
  
    }
else

if (pixel_format == 16)
    {
        USHORT color = _RGB16BIT565(r, g, b);
        *((USHORT *)(primary_buffer + x*2 + y*Ddsd.lPitch)) = color;
    } 
else
    {
        UCHAR color = r;
        primary_buffer[x + y*Ddsd.lPitch] = color;
    } 




}