private DotProductContext TryGetDot3ProductGroup(HlslTreeNode node, bool allowMatrixColumn)
{
// 3 by 3 dot product has a pattern of:
// #1 dot(ab, xy) + c*z
// #2 c*z + dot(ab, xy)
if (!(node is AddOperation addition))
{
return(null);
}
MultiplyOperation cz;
DotProductContext innerAddition = TryGetDot2ProductGroup(addition.Addend1, allowMatrixColumn);
if (innerAddition == null)
{
innerAddition = TryGetDot2ProductGroup(addition.Addend2, allowMatrixColumn);
if (innerAddition == null)
{
return(null);
}
cz = addition.Addend1 as MultiplyOperation;
if (cz == null)
{
return(null);
}
}
else
{
cz = addition.Addend2 as MultiplyOperation;
if (cz == null)
{
return(null);
}
}
HlslTreeNode a = innerAddition.Value1[0];
HlslTreeNode b = innerAddition.Value1[1];
HlslTreeNode c = cz.Factor1;
HlslTreeNode x = innerAddition.Value2[0];
HlslTreeNode y = innerAddition.Value2[1];
HlslTreeNode z = cz.Factor2;
if (CanGroupComponents(b, c, allowMatrixColumn))
{
if (allowMatrixColumn && SharesMatrixColumnOrRow(a, b))
{
// If one of the arguments is a matrix, allow the other argument to be arbitrary.
return(new DotProductContext(new[] { a, b, c }, new[] { x, y, z }));
}
if (CanGroupComponents(y, z, allowMatrixColumn))
{
return(new DotProductContext(new[] { a, b, c }, new[] { x, y, z }));
}
}
return(null);
}
private HlslTreeNode[] TryGetMatrixRow(DotProductContext firstDotProductNode)
{
if (firstDotProductNode.Value1[0] is RegisterInputNode value1)
{
ConstantDeclaration constant = _registers.FindConstant(value1);
if (constant != null && constant.Rows > 1)
{
return(firstDotProductNode.Value1);
}
}
if (firstDotProductNode.Value2[0] is RegisterInputNode value2)
{
ConstantDeclaration constant = _registers.FindConstant(value2);
if (constant != null && constant.Rows > 1)
{
return(firstDotProductNode.Value2);
}
}
return(null);
}
public string Compile(List <HlslTreeNode> components, int promoteToVectorSize = PromoteToAnyVectorSize)
{
if (components.Count == 0)
{
throw new ArgumentOutOfRangeException(nameof(components));
}
if (components.Count == 1)
{
HlslTreeNode singleComponent = components[0];
HlslTreeNode[] vector = _nodeGrouper.LengthGrouper.TryGetLengthContext(singleComponent);
if (vector != null)
{
string value = Compile(vector);
return($"length({value})");
}
DotProductContext dotProduct = _nodeGrouper.DotProductGrouper.TryGetDotProductGroup(singleComponent);
if (dotProduct != null)
{
string value1 = Compile(dotProduct.Value1);
string value2 = Compile(dotProduct.Value2);
return($"dot({value1}, {value2})");
}
}
else
{
IList <IList <HlslTreeNode> > componentGroups = _nodeGrouper.GroupComponents(components);
if (componentGroups.Count > 1)
{
return(CompileVectorConstructor(components, componentGroups));
}
var multiplication = _nodeGrouper.MatrixMultiplicationGrouper.TryGetMultiplicationGroup(components);
if (multiplication != null)
{
return(_matrixMultiplicationCompiler.Compile(multiplication));
}
var normalize = _nodeGrouper.NormalizeGrouper.TryGetContext(components);
if (normalize != null)
{
var vector = Compile(normalize);
return($"normalize({vector})");
}
}
var first = components[0];
if (first is ConstantNode constant)
{
return(CompileConstant(components, promoteToVectorSize));
}
if (first is Operation operation)
{
return(CompileOperation(operation, components, promoteToVectorSize));
}
if (first is IHasComponentIndex component)
{
return(CompileNodesWithComponents(components, first, promoteToVectorSize));
}
throw new NotImplementedException();
}
private DotProductContext TryGetDot4ProductGroup(HlslTreeNode node, bool allowMatrixColumn)
{
// 4 by 4 dot product has a pattern of:
// #1 dot3(abc, xyz) + dw
// #2 dw + dot3(abc, xyz)
if (!(node is AddOperation addition))
{
return(null);
}
MultiplyOperation dw;
DotProductContext innerAddition = TryGetDot3ProductGroup(addition.Addend1, allowMatrixColumn);
if (innerAddition == null)
{
innerAddition = TryGetDot3ProductGroup(addition.Addend2, allowMatrixColumn);
if (innerAddition == null)
{
return(null);
}
dw = addition.Addend1 as MultiplyOperation;
if (dw == null)
{
return(null);
}
}
else
{
dw = addition.Addend2 as MultiplyOperation;
if (dw == null)
{
return(null);
}
}
HlslTreeNode a = innerAddition.Value1[0];
HlslTreeNode b = innerAddition.Value1[1];
HlslTreeNode c = innerAddition.Value1[2];
HlslTreeNode d = dw.Factor1;
HlslTreeNode x = innerAddition.Value2[0];
HlslTreeNode y = innerAddition.Value2[1];
HlslTreeNode z = innerAddition.Value2[2];
HlslTreeNode w = dw.Factor2;
if (CanGroupComponents(c, d, allowMatrixColumn))
{
if (allowMatrixColumn && SharesMatrixColumnOrRow(c, d))
{
// If one of the arguments is a matrix, allow the other argument to be arbitrary.
return(new DotProductContext(new[] { a, b, c, d }, new[] { x, y, z, w }));
}
if (CanGroupComponents(z, w, allowMatrixColumn))
{
return(new DotProductContext(new[] { a, b, c, d }, new[] { x, y, z, w }));
}
}
return(null);
}