/// <summary>
/// is called from <see cref="OpenGlDevice.setTexture(Texture)"/> to set the values to the current <see cref="OpenGlDevice.Shader"/>.
/// </summary>
/// <param name="Shader">the current <see cref="OpenGlDevice.Shader"/>.</param>
public void SetAttributes(GLShader Shader)
{
Matrix M = Matrix.Scale(new xyz(1 / WorldWidth, -1 / WorldHeight, 1 / WorldWidth));
Matrix TextureMatrix = Matrix.identity;
if (SoBigAsPossible != Texture.BigAsPosible.None)
{
TextureMatrix = Matrix.Scale(new xyz(1, -1, 1));
}
else
{
TextureMatrix = M * Matrix.Translation(new xyz(-Translation.x, -Translation.y, 0)) * Matrix.Rotation(new xyz(0, 0, 1), -Rotation);
}
GL.ActiveTexture(TextureUnit.Texture0 + Index);
GL.BindTexture(TextureTarget.Texture2D, Handle);
OpenGlDevice.CheckError();
Field T = Shader.getvar("Texture" + Index.ToString() + "Enabled");
if (T != null)
{
T.SetValue(1);
}
T = Shader.getvar("Texture" + Index.ToString() + "_");
if (T != null)
{
T.SetValue(Index);
}
T = Shader.getvar("Texture" + Index.ToString() + "Matrix");
if (T != null)
{
T.SetMatrix(TextureMatrix);
}
if (NormalMap)
{
T = Shader.getvar("NormalMap");
if (T != null)
{
T.SetValue(true);
}
}
if (Tesselation)
{
T = Shader.getvar("Tesselation");
if (T != null)
{
T.SetValue(true);
}
}
}
