public MidBuiltinTypeDecl(
IBuilder parent,
string name,
IEnumerable <object> args,
IEnumerable <ResBuiltinTag> tags)
: base(parent)
{
_type = new MidBuiltinType(name, args, tags);
}
private static void DumpTypeImpl(
MidBuiltinType builtin,
Span span)
{
span.Write("{0}", builtin.Name);
if (builtin.Args.Length != 0)
{
span.Write("[");
span.Add(from a in builtin.Args select((MidType)a).Dump(), ", ");
span.Write("]");
}
}
private ITypeHLSL EmitTypeImpl(MidBuiltinType type)
{
var template = type.GetTemplate("hlsl");
if (template == null)
{
Diagnostics.Add(
Severity.Error,
new SourceRange(),
"No HLSL equivalent for type {0}", type);
return new ErrorTypeHLSL();
}
if (type.Args == null)
return new ScalarTypeHLSL(template);
var args = (from a in type.Args
select EmitGenericArg(a)).Eager();
// I hate hacks... :(
if (template == "__Array")
{
var baseType = (EmitTypeHLSL)args[0];
var count = (EmitValHLSL)args[1];
return MakeArrayType(
baseType,
count);
}
return new ScalarTypeHLSL(string.Format(template, args));
}
private int CountSlotsImpl(MidBuiltinType builtin)
{
switch (builtin.Name)
{
case "uint": return 1;
case "uint2": return 1;
case "uint3": return 1;
case "uint4": return 1;
case "float": return 1;
case "float2": return 1;
case "float3": return 1;
case "float4": return 1;
case "float4x4": return 4;
case "Array":
{
var args = builtin.Args.ToArray();
var elementType = ((MidType)args[0]);
var elementTypeSlots = CountSlots(elementType);
var elementCountVal = ((MidVal)args[1]);
var elementCount = GetIntLit(elementCountVal);
return elementCount * elementTypeSlots;
}
default:
throw new NotImplementedException();
}
}
private EmitValHLSL EmitShaderResourceRef(
MidBuiltinType type,
MidVal uniformVal,
Span span)
{
object key = GetUniformValKey(uniformVal);
EmitValHLSL result = VoidVal;
if (_uniformResourceCache.TryGetValue(key, out result))
{
return result;
}
int index = _shaderResources.Count;
string name = _shared.GenerateName(uniformVal.ToString());
DeclareFields(
EmitType(type),
_resourceHeaderSpan,
name,
suffix: string.Format(" : register(t{0})", index));
_shaderResources.Add(uniformVal);
result = new SimpleValHLSL(
name,
(SimpleTypeHLSL)EmitType(uniformVal.Type));
_uniformResourceCache[key] = result;
return result;
}
public MidBuiltinTypeDecl(
IBuilder parent,
string name,
IEnumerable<object> args,
IEnumerable<ResBuiltinTag> tags )
: base(parent)
{
_type = new MidBuiltinType(name, args, tags);
}
private SizeInfo GetSizeInfoImpl(MidBuiltinType type)
{
switch (type.Name)
{
case "ubyte4": return new SizeInfo { Size = 1 * 4, Align = 4 };
case "unorm4": return new SizeInfo { Size = 1 * 4, Align = 4 };
case "float2": return new SizeInfo { Size = 2 * 4, Align = 4 };
case "Tangent":
case "float3": return new SizeInfo { Size = 3 * 4, Align = 4 };
case "float4": return new SizeInfo { Size = 4 * 4, Align = 4 };
default:
throw new NotImplementedException();
}
}
private IEmitVal MapBuiltinTypeFormat(MidBuiltinType type)
{
switch (type.Name)
{
case "int":
return InitBlock.Enum32("DXGI_FORMAT", "DXGI_FORMAT_R32_SINT", DXGI_FORMAT.DXGI_FORMAT_R32_SINT);
case "float2":
return InitBlock.Enum32("DXGI_FORMAT", "DXGI_FORMAT_R32G32_FLOAT", DXGI_FORMAT.DXGI_FORMAT_R32G32_FLOAT);
case "float3":
case "Tangent":
return InitBlock.Enum32("DXGI_FORMAT", "DXGI_FORMAT_R32G32B32_FLOAT", DXGI_FORMAT.DXGI_FORMAT_R32G32B32_FLOAT);
case "float4":
return InitBlock.Enum32("DXGI_FORMAT", "DXGI_FORMAT_R32G32B32A32_FLOAT", DXGI_FORMAT.DXGI_FORMAT_R32G32B32A32_FLOAT);
case "ubyte4":
return InitBlock.Enum32("DXGI_FORMAT", "DXGI_FORMAT_R8G8B8A8_UINT", DXGI_FORMAT.DXGI_FORMAT_R8G8B8A8_UINT);
case "unorm4":
return InitBlock.Enum32("DXGI_FORMAT", "DXGI_FORMAT_R8G8B8A8_UNORM", DXGI_FORMAT.DXGI_FORMAT_R8G8B8A8_UNORM);
default:
throw new NotImplementedException();
}
}
private AttributeInfo GenerateInputElementsImpl(
SourceRange range,
string name,
MidBuiltinType type,
int vertexStream,
IndexSourceInfo index,
UInt32 baseOffset,
int inputSlotIndex)
{
var format = MapBuiltinTypeFormat(type);
return new InputElementInfo(range)
{
Name = name,
Format = format,
ByteOffset = baseOffset,
Index = index,
InputSlotIndex = inputSlotIndex,
};
}