public void Apply()
{
bool applyTextures = false;
if (_lastEffectPass != _pass)
{
GL.UseProgram(_pass.ProgramID);
_lastEffectPass = _pass;
}
unsafe
{
fixed (byte* ptr = &_owner.ParameterData[0])
{
foreach (EffectParameter parameter in _owner.Parameters)
{
if (parameter.Parameter.Slot == -1)
continue;
if (_lastEffect != _owner || parameter.Dirty)
parameter.Apply(ptr);
if (parameter.Class == EffectParameterClass.Sampler && parameter.Textures != null)
{
for (int i = 0; i < parameter.Textures.Length; i++)
{
_pass.GraphicsDevice.Textures[parameter.Parameter.TextureUnit + i] = parameter.Textures[i];
applyTextures = true;
}
}
}
}
}
if (applyTextures)
_pass.GraphicsDevice.Textures.Apply();
_pass.GraphicsDevice.ActiveShader = _owner.Shader;
_lastEffect = _owner;
}
public static void ResetActiveProgramCache()
{
_lastEffect = null;
_lastEffectPass = null;
}
internal EffectPass(Effect owner, ShaderPass pass)
{
_owner = owner;
_pass = pass;
}