public void CanLexShader(string path, int tokenCount)
{
// Arrange.
var lexer = new Lexer(path, File.ReadAllText(path));
lexer.Error += (sender, args) =>
{
throw new Exception(args.Message);
};
// Act.
var tokens = lexer.GetTokens();
// Assert.
Assert.That(tokens, Is.Not.Null);
Assert.That(tokens, Has.Length.EqualTo(tokenCount));
}
public void CanParseShader()
{
// Arrange.
const string path = "Resources/Shaders/Flat-Diffuse.shader";
var tokens = new Lexer(path, File.ReadAllText(path)).GetTokens();
var parser = new ShaderParser(path, tokens);
parser.Error += (sender, args) =>
{
throw new Exception(args.Message + Environment.NewLine + args.Position);
};
// Act.
var shaderNode = parser.Parse();
// Assert.
Assert.That(shaderNode, Is.Not.Null);
Assert.That(shaderNode.Name, Is.EqualTo("Flat"));
Assert.That(shaderNode.Properties, Has.Count.EqualTo(2));
Assert.That(shaderNode.Technique, Is.Not.Null);
Assert.That(shaderNode.Technique.State, Is.Not.Null);
Assert.That(shaderNode.Technique.State.CullMode, Is.EqualTo(CullMode.CullClockwiseFace));
Assert.That(shaderNode.Technique.State.FillMode, Is.Null);
Assert.That(shaderNode.Technique.State.DepthBias, Is.EqualTo(0.001f));
Assert.That(shaderNode.Technique.State.SlopeScaleDepthBias, Is.EqualTo(0.001f));
Assert.That(shaderNode.Technique.State.DepthBufferFunction, Is.EqualTo(CompareFunction.LessEqual));
Assert.That(shaderNode.Technique.State.DepthBufferWriteEnable, Is.True);
Assert.That(shaderNode.Technique.State.DepthBufferEnable, Is.False);
Assert.That(shaderNode.Technique.State.AlphaBlendFunction, Is.EqualTo(BlendFunction.Add));
Assert.That(shaderNode.Technique.State.AlphaDestinationBlend, Is.EqualTo(Blend.One));
Assert.That(shaderNode.Technique.State.AlphaSourceBlend, Is.EqualTo(Blend.Zero));
Assert.That(shaderNode.Technique.State.ColorBlendFunction, Is.EqualTo(BlendFunction.Min));
Assert.That(shaderNode.Technique.State.ColorDestinationBlend, Is.EqualTo(Blend.SourceAlpha));
Assert.That(shaderNode.Technique.State.ColorSourceBlend, Is.EqualTo(Blend.SourceColor));
Assert.That(shaderNode.Technique.Surface, Is.Not.Null);
Assert.That(shaderNode.Technique.Surface.LightingModel, Is.EqualTo("FlatShading"));
}
