more shaders

ShhShell/Terminal/CRT.metal

@@ -6,9 +6,25 @@
 //
 
 #include <metal_stdlib>
+#include <SwiftUI/SwiftUI_Metal.h>
 using namespace metal;
 
 //learning shaders stuff here
+[[ stitchable ]] half4 loupe(float2 pos, SwiftUI::Layer layer, float2 size, float2 touch) {
+	float maxDist = 0.1;
+	float2 uv = pos/size;
+	float2 center = touch/size;
+	float2 delta = uv-center;
+	float aspectRatio = size.x/size.y;
+	float dist = (delta.x * delta.x) + (delta.y * delta.y) / aspectRatio;
+	float totalZoom = 1;
+	if(dist < maxDist) {
+		totalZoom /= 2;
+	}
+	float2 newPos = delta * totalZoom + center;
+	return layer.sample(newPos*size);
+}
+
 [[ stitchable ]] float2 waveFlag(float2 pos, float time, float2 size) {
 	float2 distance = pos/size;
 	pos.y += sin(time*5 + pos.x/20) * 5 * distance.x;

ShhShell/Views/Settings/SettingsView.swift

@@ -15,6 +15,7 @@ struct SettingsView: View {
 	@State private var blinkCursor: Int = 0
 	@State var blinkTimer: Timer?
 	@State private var start = Date.now
+	@State private var touch = CGPoint.zero
 	
 	func startBlinkingIfNeeded() {
 		if hostsManager.settings.cursorType.blink {
@@ -51,10 +52,11 @@ struct SettingsView: View {
 						//								),
 						//								maxSampleOffset: .zero
 						//							)
-						Image(systemName: "square.and.arrow.up")
-							.font(.system(size: 300))
+						Rectangle()
+							.frame(width: 200, height: 100)
+							.padding(.vertical, 20)
 							.foregroundStyle(.red)
-							.drawingGroup()
+							.compositingGroup()
 							.visualEffect {
 								content,
 								proxy in
@@ -63,10 +65,13 @@ struct SettingsView: View {
 										.float(time),
 										.float2(proxy.size)
 									),
-									maxSampleOffset: .zero
+									maxSampleOffset: CGSize(width: 0, height: 40)
 								)
 							}
-							.border(.red)
+							.gesture(
+								DragGesture(minimumDistance: 0)
+									.onChanged { touch = $0.location}
+							)
 					}
 				}