public string GetUniformForUsage(UniformUsage usage)
{
string uniform;
_usageToUniform.TryGetValue(usage, out uniform);
return(uniform);
}
public bool GetUniformValue(UniformUsage usage, out IUniformValue value)
{
value = null;
if (usage == UniformUsage.World)
{
value = UniformValue.Create(World);
}
else if (usage == UniformUsage.WorldView)
{
if (_camera != null)
{
value = UniformValue.Create(Matrix4.Mult(World, _camera.View));
}
else
{
value = UniformValue.Create(World);
}
}
else if (usage == UniformUsage.WorldViewProj)
{
if (_camera != null)
{
value = UniformValue.Create(Matrix4.Mult(World, _viewProjection));
}
else
{
value = UniformValue.Create(World);
}
}
else if (usage == UniformUsage.ViewPort)
{
if (_camera != null)
{
value = UniformValue.Create(_camera.Viewport.GetAsVector4());
}
else
{
value = UniformValue.Create(new Vector4(0, 0, Width, Height));
}
}
else if (usage == UniformUsage.NearFar)
{
if (_camera != null)
{
value = UniformValue.Create(new Vector2(_camera.Near, _camera.Far));
}
else
{
value = UniformValue.Create(new Vector2(1f, 100f));
}
}
return(value != null);
}
public void Add(string uniformName, UniformUsage usage)
{
_uniformToUsage.Add(uniformName, usage);
_usageToUniform.Add(usage, uniformName);
}
