internal static void ReadMaterial(MaterialConfiguration material, string fileName)
{
foreach (var line in File.ReadAllLines(fileName))
{
var values = line.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
if (values.Length < 2)
{
continue;
}
var uniformName = values[0];
if (uniformName == "newmtl" || uniformName.StartsWith("#"))
{
continue;
}
if (uniformName.StartsWith("map_"))
{
var textureBinding = new TextureBindingConfiguration();
textureBinding.Name = uniformName;
textureBinding.TextureName = Path.GetFileNameWithoutExtension(values[1]);
textureBinding.TextureSlot = TextureUnit.Texture0 + material.BufferBindings.Count;
material.BufferBindings.Add(textureBinding);
}
else
{
UniformConfiguration uniform;
var uniformValues = ParseValues(values);
switch (uniformValues.Length)
{
case 1: uniform = new FloatUniform {
Value = uniformValues[0]
}; break;
case 2: uniform = new Vec2Uniform {
Value = new Vector2(uniformValues[0], uniformValues[1])
}; break;
case 3: uniform = new Vec3Uniform {
Value = new Vector3(uniformValues[0], uniformValues[1], uniformValues[2])
}; break;
case 4: uniform = new Vec4Uniform {
Value = new Vector4(uniformValues[0], uniformValues[1], uniformValues[2], uniformValues[3])
}; break;
default: throw new InvalidOperationException("Unsupported number of values in the configuration of uniform " + uniformName + ".");
}
uniform.Name = uniformName;
material.ShaderUniforms.Add(uniform);
}
}
}
public static void Set(this ShaderProgram @this, Vec4Uniform uniform, Vector4 vector) => Gl.ProgramUniform4(@this.Handle, uniform.Location, vector.X, vector.Y, vector.Z, vector.W);