Code-Bin #977

untitled C++ Code
Posted by: PutPixel | November 25, 2010 @ 3:45am

C++ Code

inline void PutPixel(int x, int y, Uint32 color)
{
    if (x >= 0 && x < screenWidth && y >= 0 && y < screenHeight)
    {
    switch (screen->format->BytesPerPixel)
    {
        case 1: // Assuming 8-bpp
        {
            Uint8 *bufp;
            bufp = (Uint8 *)screen->pixels + y*screen->pitch + x;
            *bufp = color;
        }
        break;
        case 2: // Probably 15-bpp or 16-bpp
        {
            Uint16 *bufp;
            bufp = (Uint16 *)screen->pixels + y*screen->pitch/2 + x;
            *bufp = color;
        }
        break;
        case 3: // Slow 24-bpp mode, usually not used
        {
            Uint8 *bufp;
            bufp = (Uint8 *)screen->pixels + y*screen->pitch + x * 3;
            if(SDL_BYTEORDER == SDL_LIL_ENDIAN)
            {
                bufp[0] = color;
                bufp[1] = color >> 8;
                bufp[2] = color >> 16;
            } else {
                bufp[2] = color;
                bufp[1] = color >> 8;
                bufp[0] = color >> 16;
            }
        }
        break;
        case 4: // Probably 32-bpp
        {
            Uint32 *bufp;
            bufp = (Uint32 *)screen->pixels + y*screen->pitch/4 + x;
            *bufp = color;
        }
        break;
    }
    }
}

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