コード例 #1
0
        //For use with solid colors

        public cTexture(cTextureInfo ptextureinfo)
        {
            _transparent = false;
            _usemipmap   = true;
            uint bytesperpixel = 4;

            _pixeldataformat = 4;
            int imagecx = _cx = ptextureinfo._width;
            int imagecy = _cy = ptextureinfo._height;

            _imageaspect = ( double )_cx / ( double )_cy;               /* By default we set the aspect to match the aspect
                                                                         * of the  image we loaded, before doing the makePowersOfTwo call. Even though we are going
                                                                         * to clamp the texture to powers of two, if we apply it to a rectangle with proportions
                                                                         * matching _imageaspect, the image will appear unstretched; the two stretches cancel out. */

            makePowersOfTwo(ref _cx, ref _cy);
            if (_cx != imagecx || _cy != imagecy)               //Need to rescale
            {
                uint arraysize =
                    bytesperpixel * ( uint )_cx * ( uint )_cy;
                byte [] pdatascaled = new byte[arraysize];
                GL.PixelStore(PixelStoreParameter.UnpackAlignment, 1);
                GL.PixelStore(PixelStoreParameter.PackAlignment, 1);
                Glu.ScaleImage(
                    (_pixeldataformat == 3) ? PixelFormat.Rgb : PixelFormat.Rgba,
                    imagecx, imagecy, PixelType.UnsignedByte,
                    ptextureinfo.Data, _cx, _cy, PixelType.UnsignedByte,
                    pdatascaled);
                string errorstring = Glu.ErrorString(GL.GetError());
                ptextureinfo.resetData(_cx, _cy, pdatascaled);
            }

            _maketexture(ptextureinfo.Data);
        }