more shaders

ShhShell/Terminal/CRT.metal

@@ -9,8 +9,32 @@
 using namespace metal;
 
 //learning shaders stuff here
+[[ stitchable ]] float2 waveFlag(float2 pos, float time, float2 size) {
+	float2 distance = pos/size;
+	pos.y += sin(time*5 + pos.x/20) * 5 * distance.x;
+	return pos;
+}
+
+[[ stitchable ]] float2 wave(float2 pos, float time) {
+	pos.y += sin(time*4 + pos.y/30) * 10;
+	return pos;
+}
+
+[[ stitchable ]] half4 rainbow(float2 pos, half4 color, float time) {
+	if(color.a == 0) {
+		return half4(0,0,0,0);
+	}
+	float angle = atan2(pos.y, pos.x) + time;
+	return half4(
+				 sin(angle),
+				 sin(angle + 2),
+				 sin(angle + 4),
+				 color.a
+				 );
+}
+
 [[ stitchable ]] half4 opacityInvert(float2 position, half4 color) {
-	return half4(1, 0, 0, color.a);
+	return half4(1, 0, 0, 1-color.a);
 }
 
 [[ stitchable ]] half4 redify(float2 position, half4 color) {

ShhShell/Views/Settings/SettingsView.swift

@@ -14,6 +14,7 @@ struct SettingsView: View {
 	
 	@State private var blinkCursor: Int = 0
 	@State var blinkTimer: Timer?
+	@State private var start = Date.now
 	
 	func startBlinkingIfNeeded() {
 		if hostsManager.settings.cursorType.blink {
@@ -38,12 +39,55 @@ struct SettingsView: View {
 			hostsManager.selectedTheme.background.suiColor.opacity(0.7)
 				.ignoresSafeArea(.all)
 			List {
-				Section("Terminal") {
+				Section("Shaded") {
+					TimelineView(.animation) { tl in
+						let time = start.distance(to: tl.date)
+//						Image(systemName: "figure.walk.circle")
+//							.font(.system(size: 300))
+//							.foregroundStyle(.blue)
+//							.distortionEffect(
+//								ShaderLibrary.wave(
+//									.float(time)
+//								),
+//								maxSampleOffset: .zero
+//							)
+						Image(systemName: "square.and.arrow.up")
+							.font(.system(size: 300))
+							.foregroundStyle(.red)
+							.drawingGroup()
+							.visualEffect {
+								content,
+								proxy in
+								content.distortionEffect(
+									ShaderLibrary.waveFlag(
+										.float(time),
+										.float2(proxy.size)
+									),
+									maxSampleOffset: .zero
+								)
+							}
+							.border(.red)
+					}
+				}
+
+				Section("Shaded") {
+					TimelineView(.animation) { tl in
+						let time = start.distance(to: tl.date)
+//					Image(systemName: "figure.walk.circle")
+//						.font(.system(size: 300))
+//						.foregroundStyle(.blue)
+//						.colorEffect(ShaderLibrary.rainbow(
+//							.float(time)
+//						))
+					}
+				}
+				Section("Original") {
 					Image(systemName: "figure.walk.circle")
 						.font(.system(size: 300))
 						.foregroundStyle(.blue)
-						.colorEffect(ShaderLibrary.scanlines())
+				}
 				
+				Section("Terminal") {
 					VStack(alignment: .leading) {
 						HStack {
 							Label("Scrollback", systemImage: "scroll")