/// <summary>
/// Public translation interface.
/// Translates the given method to HLSL
/// </summary>
/// <param name="s">Shader type definition.</param>
/// <param name="m">A method representing a shader to translate.</param>
/// <param name="attr">The shader type as attribute (either FragmentShaderAttribute or VertexShaderAttribute</param>
/// <param name="type">The shader type as ShaderType</param>
/// <returns>The translated GLSL shader source</returns>
public FunctionDescription Transform(TypeDefinition s, MethodDefinition m, CustomAttribute attr,
ShaderType type)
{
if (s == null)
throw new ArgumentNullException("s");
if (m == null)
throw new ArgumentNullException("m");
if (attr == null)
throw new ArgumentNullException("attr");
var sbase = s.BaseType.Resolve();
while (sbase.MetadataToken.ToInt32() != typeof(Shader).MetadataToken)
sbase = sbase.BaseType.Resolve();
var dctx = new DecompilerContext(s.Module)
{
CurrentType = s,
CurrentMethod = m,
CancellationToken = CancellationToken.None
};
var d = AstMethodBodyBuilder.CreateMethodBody(m, dctx);
//var ctx = new CecilTypeResolveContext(sbase.Module);
var loader = new CecilLoader();
var mscorlib = loader.LoadAssemblyFile(typeof(object).Assembly.Location);
var slsharp = loader.LoadAssembly(sbase.Module.Assembly);
var project = loader.LoadAssembly(s.Module.Assembly);
var ctx = new CompositeTypeResolveContext(new[] { project, slsharp, mscorlib });
var resolver = new CSharpResolver(ctx, CancellationToken.None) {UsingScope = new UsingScope(project)};
/*
foreach (var v in m.Body.Variables)
{
resolver.AddVariable(v.VariableType, null, v.Name)
}*/
//resolver.AddVariable()
//resolver.LocalVariables = m.Body.Variables;
// TODO: need a more sane way to get the correct class + member
var ss = ctx.GetAllTypes().First(c => c.FullName == s.FullName);
resolver.CurrentTypeDefinition = ss;
resolver.CurrentMember = ss.Methods.First(n => SameMethod(m, n, ctx));
var rv = new ResolveVisitor(resolver, new ParsedFile("memory", resolver.UsingScope), null);
var glsl = new HlslVisitor(d, attr, rv, dctx);
_functions.UnionWith(glsl.Functions);
var entry = (bool)attr.ConstructorArguments.FirstOrDefault().Value;
var sig = HlslVisitor.GetSignature(m);
var code = glsl.Result;
var desc = new FunctionDescription(Shader.GetMethodName(m), sig + code, entry, type);
_dependencies.UnionWith(glsl.Dependencies);
return desc;
}
