public static string EmptyProgramTest()
{
try
{
using (HlslProgram program = new HlslProgram())
{
return program.EmitRawShaderCode();
}
}
catch (HlslDomException)
{
}
return null;
}
public static Type CreateVSType(HlslProgram program)
{
Type f = TypeRegistry.GetFloatType();
Type float4 = TypeRegistry.GetVectorType(f, 4);
Type float3 = TypeRegistry.GetVectorType(f, 3);
Type float2 = TypeRegistry.GetVectorType(f, 2);
Type vsData = program.Types.GetStructType("vs_input", new StructField[] {
new StructField(float4, "position", new Semantic(Semantic.SemanticType.POSITION)),
new StructField(float2, "surfaceUV", new Semantic(Semantic.SemanticType.TEXCOORD, 0)),
new StructField(float2, "lightmapUV", new Semantic(Semantic.SemanticType.TEXCOORD, 1)),
new StructField(float3, "normal", new Semantic(Semantic.SemanticType.NORMAL)),
new StructField(float4, "color", new Semantic(Semantic.SemanticType.COLOR))
});
return vsData;
}
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();
}
}