private void InitializeVaryingsWithDefaultValues(ShaderGenerationContext context)
{
var vertexInput = context.KeywordMap.GetKeyword <KeywordVertexInput>();
var fragmentInput = context.KeywordMap.GetKeyword <KeywordFragmentInput>();
bool hasDefinedFragmentShader = !IsDefault;
var attributesToInit = new List <AttributeConfig>();
var vertexAttributes = vertexInput.GetAttributes();
foreach (var fragmentAttribute in fragmentInput.GetAttributes())
{
if (fragmentAttribute.AttributeType == AttributeType.Anonymous || fragmentAttribute.AttributeType == AttributeType.Position)
{
continue;
}
if (vertexAttributes.Any(vertexAttribute => fragmentAttribute == vertexAttribute))
{
attributesToInit.Add(fragmentAttribute);
}
}
foreach (AttributeConfig config in attributesToInit)
{
context.WriteLineIndented($"output.__VARYINGS{config.AttributeType.ToString().ToUpper()} = input.__ATTRIBUTES{config.AttributeType.ToString().ToUpper()};");
}
}
public override void Write(ShaderGenerationContext context)
{
context.LogShaderSection("Fragment Shader");
//todo it migh be more performant to only output a float3 for opaque shaders
context.WriteLine($"{context.CurrentPass.FragmentReturnFormat} frag(Varyings input) : COLOR{{");
context.WriteIndented(WriteFragmentShaderHeader);
base.Write(context);
context.WriteIndented(WriteFragmentShaderFooter);
context.KeywordMap.GetKeyword <KeywordModifyFinalColor>().Write(context);
context.WriteLineIndented("return __color;");
context.WriteLine("}");
}