static void GenerateKeywordPragmaStrings(
string keywordReferenceName,
KeywordDefinition keywordDefinition,
KeywordScope keywordScope,
KeywordShaderStage keywordStages,
string keywordVariantsString,
Action <string> PragmaStringAction)
{
string definitionString = keywordDefinition.ToDeclarationString();
string scopeString = keywordScope.ToDeclarationSuffix();
// check the active shader stages
if ((keywordStages == KeywordShaderStage.All) || (keywordStages == 0)) // 0 is a default, so assume that means ALL
{
PragmaStringAction($"#pragma {definitionString}{scopeString} {keywordVariantsString}");
}
else
{
// have to process each stage separately
for (int shaderStage = (int)KeywordShaderStage.Vertex; shaderStage <= (int)keywordStages; shaderStage = shaderStage * 2)
{
if (((int)keywordStages & shaderStage) != 0)
{
var keywordStage = (KeywordShaderStage)shaderStage;
var stageString = keywordStage.ToKeywordStagesString();
PragmaStringAction($"#pragma {definitionString}{scopeString}{stageString} {keywordVariantsString}");
}
}
}
}
public static string ToDeclarationSuffix(this KeywordScope scope)
{
switch (scope)
{
case KeywordScope.Local:
return("_local");
default:
return(string.Empty);
}
}
public static void GenerateBooleanKeywordPragmaStrings(
string keywordReferenceName,
KeywordDefinition keywordDefinition,
KeywordScope keywordScope,
KeywordShaderStage keywordStages,
Action <string> pragmaStringAction)
{
if (keywordDefinition != KeywordDefinition.Predefined)
{
string variantsString = $"_ {keywordReferenceName}";
GenerateKeywordPragmaStrings(keywordReferenceName, keywordDefinition, keywordScope, keywordStages, variantsString, pragmaStringAction);
}
}
public static void GenerateEnumKeywordPragmaStrings(
string keywordReferenceName,
KeywordDefinition keywordDefinition,
KeywordScope keywordScope,
KeywordShaderStage keywordStages,
IEnumerable <KeywordEntry> keywordEntries,
Action <string> pragmaStringAction)
{
if (keywordDefinition != KeywordDefinition.Predefined)
{
var entryStrings = keywordEntries.Select(x => $"{keywordReferenceName}_{x.referenceName}");
string variantsString = string.Join(" ", entryStrings);
GenerateKeywordPragmaStrings(keywordReferenceName, keywordDefinition, keywordScope, keywordStages, variantsString, pragmaStringAction);
}
}