R/Ryujinx.Graphics.Shader/CodeGen/Glsl/Instructions/InstGenVector.cs

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using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using Ryujinx.Graphics.Shader.StructuredIr;
using static Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions.InstGenHelper;
using static Ryujinx.Graphics.Shader.StructuredIr.InstructionInfo;
namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
{
static class InstGenVector
{
public static string VectorExtract(CodeGenContext context, AstOperation operation)
{
IAstNode vector = operation.GetSource(0);
IAstNode index = operation.GetSource(1);
string vectorExpr = GetSoureExpr(context, vector, OperandManager.GetNodeDestType(context, vector));
if (index is AstOperand indexOperand && indexOperand.Type == OperandType.Constant)
{
char elem = "xyzw"[indexOperand.Value];
return $"{vectorExpr}.{elem}";
}
else
{
string indexExpr = GetSoureExpr(context, index, GetSrcVarType(operation.Inst, 1));
return $"{vectorExpr}[{indexExpr}]";
}
}
}
}