protected void WriteStructure(StringBuilder sb, StructureDefinition sd)
{
sb.AppendLine($"struct {CSharpToShaderType(sd.Name)}");
sb.AppendLine("{");
HlslSemanticTracker tracker = new HlslSemanticTracker();
StringBuilder fb = new StringBuilder();
foreach (FieldDefinition field in sd.Fields)
{
fb.Append(CSharpToShaderType(field.Type.Name.Trim()));
fb.Append(' ');
fb.Append(CorrectIdentifier(field.Name.Trim()));
int arrayCount = field.ArrayElementCount;
if (arrayCount > 0)
{
fb.Append('['); fb.Append(arrayCount); fb.Append(']');
}
fb.Append(HlslSemantic(field.SemanticType, ref tracker));
fb.Append(';');
sb.Append(" ");
sb.AppendLine(fb.ToString());
fb.Clear();
}
sb.AppendLine("};");
sb.AppendLine();
}
private string HlslSemantic(SemanticType semanticType, ref HlslSemanticTracker tracker)
{
switch (semanticType)
{
case SemanticType.None:
return(string.Empty);
case SemanticType.Position:
{
int val = tracker.Position++;
return(" : POSITION" + val.ToString());
}
case SemanticType.Normal:
{
int val = tracker.Normal++;
return(" : NORMAL" + val.ToString());
}
case SemanticType.TextureCoordinate:
{
int val = tracker.TexCoord++;
return(" : TEXCOORD" + val.ToString());
}
case SemanticType.Color:
{
int val = tracker.Color++;
return(" : COLOR" + val.ToString());
}
case SemanticType.Tangent:
{
int val = tracker.Tangent++;
return(" : TANGENT" + val.ToString());
}
case SemanticType.SystemPosition:
{
return(" : SV_Position");
}
case SemanticType.ColorTarget:
{
int val = tracker.ColorTarget++;
return(" : SV_Target" + val.ToString());
}
default: throw new ShaderGenerationException("Invalid semantic type: " + semanticType);
}
}
private string HlslSemantic(SemanticType semanticType, bool fragmentSemantics, ref HlslSemanticTracker tracker)
{
switch (semanticType)
{
case SemanticType.None:
return(string.Empty);
case SemanticType.Position:
if (fragmentSemantics)
{
if (!tracker.emittedSvPosition)
{
tracker.emittedSvPosition = true;
return(" : SV_POSITION");
}
else
{
int val = tracker.Position++;
return(" : POSITION" + val.ToString());
}
}
else
{
int val = tracker.Position++;
return(" : POSITION" + val.ToString());
}
case SemanticType.Normal:
{
int val = tracker.Normal++;
return(" : NORMAL" + val.ToString());
}
case SemanticType.TextureCoordinate:
{
int val = tracker.TexCoord++;
return(" : TEXCOORD" + val.ToString());
}
case SemanticType.Color:
{
int val = tracker.Color++;
return(" : COLOR" + val.ToString());
}
case SemanticType.Tangent:
{
int val = tracker.Tangent++;
return(" : TANGENT" + val.ToString());
}
default: throw new ShaderGenerationException("Invalid semantic type: " + semanticType);
}
}
