public static string GetPositionAssignment(IEnumerable <ShaderAttribute> attributes, string matrixName)
{
// TODO: Use the first attribute as position?
var positionAttribute = attributes.FirstOrDefault();
if (positionAttribute == null)
{
return("");
}
string positionVariable = GlslVectorUtils.ConstructVector(ValueCount.Four, positionAttribute.ValueCount, positionAttribute.Name);
return($"gl_Position = {matrixName} * {positionVariable};");
}
private static List <CaseStatement> GetCases(IEnumerable <ShaderAttribute> attributes)
{
var cases = new List <CaseStatement>();
var index = 0;
foreach (var attribute in attributes)
{
string body = GlslVectorUtils.ConstructVector(ValueCount.Three, attribute.ValueCount, vertexOutputPrefix + attribute.Name);
cases.Add(new CaseStatement(index.ToString(), body));
index++;
}
return(cases);
}