public static void Draw(BTexture texture, Vector2 position, Vector2 scale, Color colorOverlay, Vector2 origin, RectangleF?sourceRec = null)
{
Vector2[] vertices = new Vector2[4]
{
new Vector2(0, 0),
new Vector2(1, 0),
new Vector2(1, 1),
new Vector2(0, 1),
};
GL.BindTexture(TextureTarget.Texture2D, texture.ID);
GL.Begin(PrimitiveType.Quads);
GL.Color3(colorOverlay);
for (int i = 0; i < 4; i++)
{
if (sourceRec == null)
{
GL.TexCoord2(vertices[i].X, vertices[i].Y);
}
else
{
GL.TexCoord2((sourceRec.Value.Left + vertices[i].X * sourceRec.Value.Width) / texture.Width,
(sourceRec.Value.Top + vertices[i].Y * sourceRec.Value.Height) / texture.Height);
}
vertices[i].X *= (sourceRec == null) ? texture.Width : sourceRec.Value.Width;
vertices[i].Y *= (sourceRec == null) ? texture.Height : sourceRec.Value.Height;
vertices[i] -= origin;
vertices[i] *= scale;
vertices[i] += position;
GL.Vertex2(vertices[i].X, vertices[i].Y);
}
GL.End();
}