public static string ArgAssignedToOutputTest()
{
using (HlslProgram program = new HlslProgram())
{
Type vsData = CreateVSType(program);
UserDefinedFunction udf = new UserDefinedFunction("vs_main");
Value argValue = udf.AddArgument(vsData);
DeclExpr output = new DeclExpr(vsData, argValue);
udf.AddExpr(output);
udf.AddExpr(new ReturnExpr(output));
program.AddFunction(udf);
return program.EmitRawShaderCode();
}
}
public static string SimpleFunctionCallTest()
{
using (HlslProgram program = new HlslProgram())
{
Type vsData = CreateVSType(program);
Type f1 = TypeRegistry.GetFloatType();
Type f4 = TypeRegistry.GetVectorType(f1, 4);
DeclExpr wvpMatrixDecl = new DeclExpr(TypeRegistry.GetMatrixType(f4, 4), "WorldViewProjection");
program.AddGlobal(wvpMatrixDecl);
UserDefinedFunction udf = new UserDefinedFunction("vs_main");
Value argValue = udf.AddArgument(vsData);
DeclExpr output = new DeclExpr(vsData);
udf.AddExpr(output);
// Initialize the position element -- multiply input position by WVP matrix.
Function fn = program.GetFunctionByName("mul");
CallExpr wvpMul = new CallExpr(fn, new Expr[] { new StructMemberExpr(argValue, "position"), wvpMatrixDecl });
udf.AddExpr(new AssignmentExpr(new StructMemberExpr(output.Value, "position").Value, wvpMul.Value));
// Initialize the rest of the struct to zero.
StructMemberExpr[] otherMembers = new StructMemberExpr[] {
new StructMemberExpr(output.Value, 1),
new StructMemberExpr(output.Value, 2),
new StructMemberExpr(output.Value, 3),
new StructMemberExpr(output.Value, 4),
};
udf.AddExpr(new CommentExpr("Ensuring that a valid comment is being emitted."));
udf.AddExpr(new CommentExpr("Even one that consists of multiple lines."));
udf.AddExpr(new CommentExpr(string.Format("Or embedded newlines.{0}Like this!", Environment.NewLine)));
udf.AddExpr(new CommentExpr("Or this.\n(not a proper newline.)"));
foreach (StructMemberExpr SME in otherMembers)
udf.AddExpr(new AssignmentExpr(SME.Value, new LiteralExpr(SME.Value.ValueType).Value));
udf.AddExpr(new ReturnExpr(output));
program.AddFunction(udf);
return program.EmitRawShaderCode();
}
}
public static string SimpleStructMemberTest()
{
using (HlslProgram program = new HlslProgram())
{
Type vsData = CreateVSType(program);
UserDefinedFunction udf = new UserDefinedFunction("vs_main");
Value argValue = udf.AddArgument(vsData);
DeclExpr output = new DeclExpr(vsData);
udf.AddExpr(output);
udf.AddExpr(new AssignmentExpr(
new StructMemberExpr(output.Value, "position").Value,
new StructMemberExpr(argValue, "position").Value));
StructMemberExpr[] otherMembers = new StructMemberExpr[] {
new StructMemberExpr(output.Value, 1),
new StructMemberExpr(output.Value, 2),
new StructMemberExpr(output.Value, 3),
new StructMemberExpr(output.Value, 4),
};
foreach (StructMemberExpr SME in otherMembers)
udf.AddExpr(new AssignmentExpr(SME.Value, new LiteralExpr(SME.Value.ValueType).Value));
udf.AddExpr(new ReturnExpr(output));
program.AddFunction(udf);
return program.EmitRawShaderCode();
}
}
/// <summary>
/// Construct a ForExpr with an attribute and an unroll depth.
/// </summary>
/// <param name="initializer">Initializer expression.</param>
/// <param name="test">Test expression, must evaluate to a scalar boolean.</param>
/// <param name="update">Update expression.</param>
/// <param name="attributes">Loop attribute.</param>
/// <param name="unrollDepth">Depth with which to unroll the loop, used with LoopAttributes.UNROLL</param>
public ForExpr(DeclExpr initializer, Expr test, Expr update, LoopAttributes attributes, int unrollDepth)
{
if (!test.HasValue())
throw new HlslDomException("Test expression doesn't return a value!");
if (!(test.Value.ValueType is BoolType))
throw new HlslDomException("Test expression does not return a boolean value!");
Initializer = initializer;
Test = test;
Update = update;
Attributes = attributes;
UnrollDepth = unrollDepth;
}
/// <summary>
/// Construct a ForExpr with an attribute.
/// </summary>
/// <param name="initializer">Initializer expression.</param>
/// <param name="test">Test expression, must evaluate to a scalar boolean.</param>
/// <param name="update">Update expression.</param>
/// <param name="attributes">Loop attribute.</param>
public ForExpr(DeclExpr initializer, Expr test, Expr update, LoopAttributes attributes)
: this(initializer, test, update, attributes, 0)
{
if (attributes == LoopAttributes.UNROLL)
throw new HlslDomException("Unroll attribute specified without an unroll depth!");
}
/// <summary>
/// Construct a ForExpr.
/// </summary>
/// <param name="initializer">Initializer expression.</param>
/// <param name="test">Test expression, must evaluate to a scalar boolean.</param>
/// <param name="update">Update expression.</param>
public ForExpr(DeclExpr initializer, Expr test, Expr update)
: this(initializer, test, update, (int)LoopAttributes.NO_ATTRIBUTE, 0)
{
}