static D3DFORMAT dds_pixel_format_to_d3dformat(const struct dds_pixel_format *pixel_format)  { -    FIXME("Pixel format conversion not implemented.\n"); +    if (pixel_format->flags & DDS_PF_FOURCC) +        return dds_fourcc_to_d3dformat(pixel_format->fourcc); +    else if (pixel_format->flags & DDS_PF_RGB) +        return dds_rgb_to_d3dformat(pixel_format); +    else if (pixel_format->flags & DDS_PF_LUMINANCE) +        return dds_luminance_to_d3dformat(pixel_format); +    else if (pixel_format->flags & DDS_PF_ALPHA_ONLY) +        return dds_alpha_to_d3dformat(pixel_format);