public DecomposeAttrContext SwitchToAlpha()
{
DecomposeAttrContext result = this;
result.flavor = AttrCase.Alpha;
return(result);
}
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 AttrInfo DecomposeAttrImpl(
MidBuiltinApp app,
DecomposeAttrContext context)
{
string template = app.Decl.GetTemplate("blend");
if (template == null)
{
throw OperationTooComplexError(app.Range);
}
var args = app.Args.ToArray();
switch (template)
{
case "AddFloat4":
{
var left = DecomposeAttr(args[0], context);
var right = DecomposeAttr(args[1], context);
return new OpInfo(
app.Range,
D3D11_BLEND_OP.D3D11_BLEND_OP_ADD,
left,
right);
}
case "MulFloat4": {
var left = DecomposeAttr(args[0], context);
var right = DecomposeAttr(args[1], context);
return new TermInfo(app.Range, left, right);
}
case "MulFloat_Float4": {
var left = DecomposeAttr(args[0], context.SwitchToAlpha());
var right = DecomposeAttr(args[1], context);
return new TermInfo(app.Range, left, right);
}
case "MulFloat4_Float": {
var left = DecomposeAttr(args[0], context);
var right = DecomposeAttr(args[1], context.SwitchToAlpha());
return new TermInfo(app.Range, left, right);
}
case "GetAlpha": {
var arg = DecomposeAttr(args[0], context.SwitchToAlpha());
return arg;
}
case "SubFloat":
{
var left = DecomposeAttr(args[0], context);
var right = DecomposeAttr(args[1], context);
return new SubInfo(app.Range, left, right);
}
case "IntToFloat":
{
var arg = DecomposeAttr(args[0], context);
return arg;
}
default:
throw OperationTooComplexError(app.Range);
}
}
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 AttrInfo DecomposeAttrImpl(
MidLit<Int32> exp,
DecomposeAttrContext context)
{
return new LitInfo(exp.Range, (float) exp.Value);
}
private AttrInfo DecomposeAttrImpl(
MidAttributeRef midAttrRef,
DecomposeAttrContext context)
{
return DecomposeAttr(midAttrRef.Decl, context);
}
private AttrInfo DecomposeAttrImpl(
MidExp exp,
DecomposeAttrContext context)
{
throw OperationTooComplexError(exp.Range);
}
private AttrInfo DecomposeAttr(
MidExp exp,
DecomposeAttrContext context)
{
return DecomposeAttrImpl((dynamic)exp, context);
}
private AttrInfo DecomposeAttr(
MidAttributeDecl midAttrDecl,
DecomposeAttrContext context )
{
return DecomposeAttr(midAttrDecl.Exp, context);
}
private AttrInfo DecomposeAttrImpl(
MidBuiltinApp app,
DecomposeAttrContext context)
{
string template = app.Decl.GetTemplate("blend");
if (template == null)
{
throw OperationTooComplexError(app.Range);
}
var args = app.Args.ToArray();
switch (template)
{
case "AddFloat4":
{
var left = DecomposeAttr(args[0], context);
var right = DecomposeAttr(args[1], context);
return(new OpInfo(
app.Range,
D3D11_BLEND_OP.D3D11_BLEND_OP_ADD,
left,
right));
}
case "MulFloat4": {
var left = DecomposeAttr(args[0], context);
var right = DecomposeAttr(args[1], context);
return(new TermInfo(app.Range, left, right));
}
case "MulFloat_Float4": {
var left = DecomposeAttr(args[0], context.SwitchToAlpha());
var right = DecomposeAttr(args[1], context);
return(new TermInfo(app.Range, left, right));
}
case "MulFloat4_Float": {
var left = DecomposeAttr(args[0], context);
var right = DecomposeAttr(args[1], context.SwitchToAlpha());
return(new TermInfo(app.Range, left, right));
}
case "GetAlpha": {
var arg = DecomposeAttr(args[0], context.SwitchToAlpha());
return(arg);
}
case "SubFloat":
{
var left = DecomposeAttr(args[0], context);
var right = DecomposeAttr(args[1], context);
return(new SubInfo(app.Range, left, right));
}
case "IntToFloat":
{
var arg = DecomposeAttr(args[0], context);
return(arg);
}
default:
throw OperationTooComplexError(app.Range);
}
}
private AttrInfo DecomposeAttrImpl(
MidLit <Int32> exp,
DecomposeAttrContext context)
{
return(new LitInfo(exp.Range, (float)exp.Value));
}
private AttrInfo DecomposeAttrImpl(
MidAttributeRef midAttrRef,
DecomposeAttrContext context)
{
return(DecomposeAttr(midAttrRef.Decl, context));
}
private AttrInfo DecomposeAttrImpl(
MidExp exp,
DecomposeAttrContext context)
{
throw OperationTooComplexError(exp.Range);
}
private AttrInfo DecomposeAttr(
MidExp exp,
DecomposeAttrContext context)
{
return(DecomposeAttrImpl((dynamic)exp, context));
}
private AttrInfo DecomposeAttr(
MidAttributeDecl midAttrDecl,
DecomposeAttrContext context)
{
return(DecomposeAttr(midAttrDecl.Exp, context));
}