Beispiel #1
0
        public FontRenderer(Font font)
        {
            Font = font;
            charHeight = -Font.Height;
            GlyphBitmap = new Bitmap(TextureSize.Width, TextureSize.Height);

            texture = new Texture(GL.GenTexture());
            GL.BindTexture(TextureTarget.Texture2D, texture.GetId());
            GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)All.Linear);
            GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)All.Linear);

            using (Graphics gfx = Graphics.FromImage(GlyphBitmap))
            {
                //this supposedly improves perforance
                //Application.SetCompatibleTextRenderingDefault(false);

                StringFormat format = new StringFormat(StringFormat.GenericTypographic);
                Point charPoint = new Point(0, 0);
                for (int i = 0; i < chars.Length; i++)
                {
                    SizeF charSizeF = gfx.MeasureString(new string(new Char[1] { Convert.ToChar(i) }), Font, 0, format);

                    Size charSize = new Size((int)Math.Ceiling(charSizeF.Width), (int)Math.Ceiling(charSizeF.Height));

                    //fudge factor to prevent glyphs from overlapping
                    charSize.Width += 2;

                    if (charSize.Width + charPoint.X > TextureSize.Width)
                    {
                        charPoint.X = 0;
                        charPoint.Y += (int)Math.Ceiling(Font.GetHeight());
                    }
                    chars[i] = new CharData(new Rectangle(charPoint, charSize), this);
                    charPoint.X += charSize.Width;
                }

                gfx.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAliasGridFit;
                gfx.Clear(Color.Transparent);
                for (int i = 0; i < chars.Length; i++)
                {
                    PointF point = new PointF(chars[i].PixelRegion.X, chars[i].PixelRegion.Y);
                    gfx.DrawString(new string(new Char[1] { Convert.ToChar(i) }), Font, new SolidBrush(Color.Black), point);
                }
            }

            BitmapData data = GlyphBitmap.LockBits(new Rectangle(0, 0, GlyphBitmap.Width, GlyphBitmap.Height), ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
            GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, TextureSize.Width, TextureSize.Height, 0, Format, PixelType.UnsignedByte, data.Scan0);
            GlyphBitmap.UnlockBits(data);
        }
Beispiel #2
0
 private void LoadImage()
 {
     try
     {
         using (Bitmap file = new Bitmap(Filename))
         {
             LoadImage(file);
         }
     }
     catch (FileNotFoundException)
     {
         Debug.Assert(false, "Texture missing.");
         _texture = _textureMissing;
     }
 }
Beispiel #3
0
        private void LoadImage(Bitmap image)
        {
            int texID = GL.GenTexture();

            GL.BindTexture(TextureTarget.Texture2D, texID);
            BitmapData data = image.LockBits(new Rectangle(0, 0, image.Width, image.Height),
                ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);

            GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, data.Width, data.Height, 0,
                OpenTK.Graphics.OpenGL.PixelFormat.Bgra, PixelType.UnsignedByte, data.Scan0);

            image.UnlockBits(data);

            GL.GenerateMipmap(GenerateMipmapTarget.Texture2D);

            _texture = new Texture(texID);
        }