diff --git a/Package.swift b/Package.swift
index cd54eec..0cf2670 100644
--- a/Package.swift
+++ b/Package.swift
@@ -1,9 +1,9 @@
 // swift-tools-version:5.3
 import PackageDescription
 
-let version = "1.19.2"
-let tag = "v1.19.2"
-let checksum = "335715c1664f8c2ada476c65a8b35715ee29e36ee19ec3388bd517750fd1fe4f"
+let version = "1.21.1"
+let tag = "v1.21.1"
+let checksum = "5cd765a356fefb457aa2192545fa67c09c37a2d4b42cafb8b5628aa9a20bd5bd"
 let url = "https://github.com/OpenEmu/OpenEmu-Shaders/releases/download/\(tag)/OpenEmuShaders-\(version).xcframework.zip"
 
 let package = Package(
diff --git a/Source/MTLPixelConverter.swift b/Source/MTLPixelConverter.swift
index 96eec11..db91ff2 100644
--- a/Source/MTLPixelConverter.swift
+++ b/Source/MTLPixelConverter.swift
@@ -111,10 +111,10 @@ public class MTLPixelConverter: NSObject {
     ]
     
     @objc
-    public init(device: MTLDevice, library: MTLLibrary) throws {
+    public init(device: MTLDevice) throws {
         self.device = device
         let bundle = Bundle(for: type(of: self))
-        self.library = try device.makeDefaultLibrary(bundle: bundle)
+        library = try device.makeDefaultLibrary(bundle: bundle)
         
         var texToTex = [TextureConverter?](repeating: nil, count: Int(OEMTLPixelFormat.count.rawValue))
         var bufToTex = [BufferConverter?](repeating: nil, count: Int(OEMTLPixelFormat.count.rawValue))
@@ -152,6 +152,11 @@ public class MTLPixelConverter: NSObject {
         return bufToTex[Int(sourceFormat.rawValue)]
     }
     
+    @objc
+    public func textureConverter(withFormat sourceFormat: OEMTLPixelFormat) -> TextureConverter? {
+        return texToTex[Int(sourceFormat.rawValue)]
+    }
+    
     @objc
     public func convert(fromTexture src: MTLTexture, sourceFormat: OEMTLPixelFormat, toTexture dst: MTLTexture, commandBuffer: MTLCommandBuffer) {
         guard let filter = texToTex[Int(sourceFormat.rawValue)] else {
diff --git a/Source/OEFilterChain.m b/Source/OEFilterChain.m
index 9689dfa..869bc0f 100644
--- a/Source/OEFilterChain.m
+++ b/Source/OEFilterChain.m
@@ -163,9 +163,7 @@ - (instancetype)initWithDevice:(id<MTLDevice>)device
     }
     assert(err == nil);
     _loader    = [[MTKTextureLoader alloc] initWithDevice:device];
-    _converter = [[MTLPixelConverter alloc] initWithDevice:_device
-                                                     library:_library
-                                                       error:&err];
+    _converter = [[MTLPixelConverter alloc] initWithDevice:_device error:&err];
     if (err != nil) {
         os_log_error(OE_LOG_DEFAULT, "error initializing pixel converter: %{public}@", err.localizedDescription);
     }