Shader: Rework Swizzle and add support for swizzle store in SPIRV

2021-12-21 14:30:47 +01:00
parent e43a638112
commit 837b72f68e
11 changed files with 151 additions and 102 deletions
--- a/src/Nazara/Shader/LangWriter.cpp
+++ b/src/Nazara/Shader/LangWriter.cpp
@@ -881,27 +881,9 @@ namespace Nz
 		Visit(node.expression, true);
 		Append(".");

+		const char* componentStr = "xyzw";
 		for (std::size_t i = 0; i < node.componentCount; ++i)
-		{
-			switch (node.components[i])
-			{
-				case ShaderAst::SwizzleComponent::First:
-					Append("x");
-					break;
-
-				case ShaderAst::SwizzleComponent::Second:
-					Append("y");
-					break;
-
-				case ShaderAst::SwizzleComponent::Third:
-					Append("z");
-					break;
-
-				case ShaderAst::SwizzleComponent::Fourth:
-					Append("w");
-					break;
-			}
-		}
+			Append(componentStr[node.components[i]]);
 	}

 	void LangWriter::Visit(ShaderAst::VariableExpression& node)