private MidExp SimplifyExpImpl(MidAttributeFetch exp, SimplifyEnv env)
{
return(_exps.AttributeFetch(
exp.Range,
exp.Obj,
exp.Attribute));
}
public MidAttributeFetch CleanupExp(MidAttributeFetch exp)
{
var oldAttr = exp.Attribute;
var newAttr = MapOldToNew(oldAttr);
return(_exps.AttributeFetch(exp.Range, exp.Obj, newAttr));
}
public MidExp PreTransform(
MidAttributeFetch fetch)
{
AttributeInfo info;
if (!_attrInfos.TryGetValue(fetch.Attribute, out info))
{
return(fetch);
}
var fieldExps = (from f in info.Fields
select _exps.AttributeFetch(fetch.Range, fetch.Obj, f.AttrDecl)).ToArray();
foreach (var f in info.Fields)
{
f.AttrDecl.IsOutput = true;
}
return(new MidStructVal(
fetch.Range,
fetch.Type,
fieldExps));
}
private static void DumpExpImpl(
MidAttributeFetch attrFetch,
Span span)
{
span.Write("{0}.{1}", attrFetch.Obj.Dump(), attrFetch.Attribute.Name);
}
private AttrInfo DecomposeAttrImpl(
MidAttributeFetch exp,
DecomposeAttrContext context)
{
string obj = exp.Obj.ToString();
if (obj == "__ps2om")
{
// The operand is then a source to the
// blending operation
var srcAttr = exp.Attribute;
switch (context.flavor)
{
case AttrCase.Color:
SetSource(ref _renderTargetSources[context.index].colorExp, srcAttr);
return new SrcInfo(exp.Range);
case AttrCase.Alpha:
SetSource(ref _renderTargetSources[context.index].alphaExp, srcAttr);
return new FactorInfo(exp.Range, D3D11_BLEND.D3D11_BLEND_SRC_ALPHA);
case AttrCase.Combined:
SetSource(ref _renderTargetSources[context.index].combinedExp, srcAttr);
return new SrcInfo(exp.Range);
default:
throw OperationTooComplexError(exp.Range);
}
}
else if (obj == "OM_Dest")
{
switch (context.flavor)
{
case AttrCase.Color:
return new FactorInfo(exp.Range, D3D11_BLEND.D3D11_BLEND_DEST_COLOR);
case AttrCase.Alpha:
return new FactorInfo(exp.Range, D3D11_BLEND.D3D11_BLEND_DEST_ALPHA);
case AttrCase.Combined:
return new FactorInfo(
exp.Range,
D3D11_BLEND.D3D11_BLEND_DEST_COLOR,
D3D11_BLEND.D3D11_BLEND_DEST_ALPHA);
default:
throw OperationTooComplexError(exp.Range);
}
}
else
{
throw OperationTooComplexError(exp.Range);
}
}
private EmitValHLSL EmitExpImpl(MidAttributeFetch fetch, Span span)
{
var obj = EmitExp(fetch.Obj, span);
return FetchAttr(obj, fetch.Attribute, span);
}
public void PreEmitExpImpl(
MidAttributeFetch exp,
Span span)
{
PreEmitExp(exp.Obj, span);
}
private void TransformChildrenImpl(
MidAttributeFetch fetch)
{
fetch.Obj = (MidPath)Transform(fetch.Obj);
}
private MidExp SimplifyExpImpl(MidAttributeFetch exp, SimplifyEnv env)
{
return _exps.AttributeFetch(
exp.Range,
exp.Obj,
exp.Attribute);
}
public MidAttributeFetch CleanupExp( MidAttributeFetch exp )
{
var oldAttr = exp.Attribute;
var newAttr = MapOldToNew( oldAttr );
return _exps.AttributeFetch( exp.Range, exp.Obj, newAttr );
}
private void TransformChildrenImpl(
MidAttributeFetch fetch)
{
fetch.Obj = (MidPath) Transform(fetch.Obj);
}
public MidExp PreTransform(
MidAttributeFetch fetch)
{
AttributeInfo info;
if (!_attrInfos.TryGetValue(fetch.Attribute, out info))
return fetch;
var fieldExps = (from f in info.Fields
select _exps.AttributeFetch(fetch.Range, fetch.Obj, f.AttrDecl )).ToArray();
foreach( var f in info.Fields )
{
f.AttrDecl.IsOutput = true;
}
return new MidStructVal(
fetch.Range,
fetch.Type,
fieldExps );
}