API tools faq
paste
Advertisement
walkerbuildapps

cool ball

walkerbuildapps
Apr 14th, 2025
257
0
Never
Add comment
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
text 27.67 KB | None | 0 0
raw download clone embed print report
  1. // === Orb Moving ===
  2. //join r/keisen for more source code, designs, other cool stuff
  3.  
  4. // How to Use:
  5. // 1. Create a new SwiftUI project in Xcode.
  6. // 2. Replace the default ContentView.swift with the ContentView code below.
  7. // 3. Create a new Swift file named ShapeUniforms.swift and paste its code below.
  8. // 4. Create a new Swift file named UIEffectRenderer.swift and paste its code below.
  9. // 5. Create a new Swift file named UIEffectView.swift and paste its code below.
  10. // 6. Create a new Metal file named UIEffectShaders.metal and paste its code below.
  11. // 7. Add an image named exactly "trippywave_texture" to your Assets.xcassets (or change the name in UIEffectRenderer.swift).
  12. // 8. Build and Run! Drag up from the bottom to show sliders.
  13.  
  14.  
  15. //CONTENT VIEW, DO NOT COPY AND PASTE EVERYTHING IN ONE FILE! FOLLOW INSTRUCTIONS ABOVE
  16.  
  17. import SwiftUI
  18. import simd
  19.  
  20. struct ContentView: View {
  21. @State private var warp: Float = 1.8
  22. @State private var speed: Float = 0.1
  23. @State private var blend: Float = 0.3
  24. @State private var warm: Float = 0.6
  25. @State private var noise: Float = 4.0
  26. @State private var contrast: Float = 1.8
  27. @State private var radius: Float = 0.3
  28.  
  29. @State private var panelOffset: CGFloat = UIScreen.main.bounds.height
  30. @State private var startDragOffset: CGFloat = UIScreen.main.bounds.height
  31. @State private var panelHeight: CGFloat = 400
  32.  
  33. private var currentShapeUniforms: ShapeUniforms {
  34. ShapeUniforms(
  35. positionAndRadius: SIMD4<Float>(0, 0, 0, radius),
  36. params1: SIMD4<Float>(blend, warp, speed, warm),
  37. params2: SIMD4<Float>(noise, contrast, 0, 0)
  38. )
  39. }
  40.  
  41. private func formatValue(_ value: Float) -> String {
  42. String(format: "%.2f", value)
  43. }
  44.  
  45. var body: some View {
  46. GeometryReader { screenGeometry in
  47. ZStack(alignment: .bottom) {
  48.  
  49. UIEffectView(shapeUniforms: currentShapeUniforms)
  50. .edgesIgnoringSafeArea(.all)
  51. .gesture(dragGesture(screenGeometry: screenGeometry))
  52.  
  53. parameterPanel(screenGeometry: screenGeometry)
  54. .offset(y: panelOffset)
  55. .background(GeometryReader { panelGeo in
  56. Color.clear.onAppear {
  57. self.panelHeight = panelGeo.size.height
  58. let peekAmount: CGFloat = 50
  59. let maxOffset = max(0, self.panelHeight - peekAmount)
  60. self.panelOffset = maxOffset
  61. self.startDragOffset = self.panelOffset
  62. print("Panel Height: \(self.panelHeight), Initial Offset: \(self.panelOffset)")
  63. }
  64. })
  65.  
  66. }
  67. .edgesIgnoringSafeArea(.bottom)
  68. }
  69. // .statusBar(hidden: true)
  70. }
  71.  
  72. func dragGesture(screenGeometry: GeometryProxy) -> some Gesture {
  73. DragGesture(minimumDistance: 1, coordinateSpace: .global)
  74. .onChanged { value in
  75. let dragAmount = value.translation.height
  76. let targetOffset = startDragOffset + dragAmount
  77. let peekAmount: CGFloat = 50
  78. let maxOffset = max(0, panelHeight - peekAmount)
  79. panelOffset = max(0, min(maxOffset, targetOffset))
  80. }
  81. .onEnded { value in
  82. startDragOffset = panelOffset
  83. let predictedEndOffset = panelOffset + value.predictedEndTranslation.height
  84. let peekAmount: CGFloat = 50
  85. let maxOffset = max(0, panelHeight - peekAmount)
  86. let halfway = maxOffset / 2
  87.  
  88. withAnimation(.interpolatingSpring(stiffness: 250, damping: 25)) {
  89. if predictedEndOffset > halfway {
  90. panelOffset = maxOffset
  91. } else {
  92. panelOffset = 0
  93. }
  94. }
  95. startDragOffset = panelOffset
  96. }
  97. }
  98.  
  99. func parameterPanel(screenGeometry: GeometryProxy) -> some View {
  100. VStack(alignment: .leading, spacing: 10) {
  101. HStack {
  102. Text("Radius:")
  103. .frame(width: 60, alignment: .leading)
  104. Slider(value: $radius, in: 0.1...1.0)
  105. Text(formatValue(radius))
  106. .frame(width: 40, alignment: .trailing)
  107. }
  108. HStack {
  109. Text("Warp:")
  110. .frame(width: 60, alignment: .leading)
  111. Slider(value: $warp, in: 0.0...5.0)
  112. Text(formatValue(warp))
  113. .frame(width: 40, alignment: .trailing)
  114. }
  115. HStack {
  116. Text("Speed:")
  117. .frame(width: 60, alignment: .leading)
  118. Slider(value: $speed, in: 0.0...1.0)
  119. Text(formatValue(speed))
  120. .frame(width: 40, alignment: .trailing)
  121. }
  122. HStack {
  123. Text("Blend:")
  124. .frame(width: 60, alignment: .leading)
  125. Slider(value: $blend, in: 0.0...1.0)
  126. Text(formatValue(blend))
  127. .frame(width: 40, alignment: .trailing)
  128. }
  129. HStack {
  130. Text("Warm:")
  131. .frame(width: 60, alignment: .leading)
  132. Slider(value: $warm, in: 0.0...2.0)
  133. Text(formatValue(warm))
  134. .frame(width: 40, alignment: .trailing)
  135. }
  136. HStack {
  137. Text("Noise:")
  138. .frame(width: 60, alignment: .leading)
  139. Slider(value: $noise, in: 0.1...10.0)
  140. Text(formatValue(noise))
  141. .frame(width: 40, alignment: .trailing)
  142. }
  143. HStack {
  144. Text("Contrast:")
  145. .frame(width: 60, alignment: .leading)
  146. Slider(value: $contrast, in: 0.5...5.0)
  147. Text(formatValue(contrast))
  148. .frame(width: 40, alignment: .trailing)
  149. }
  150.  
  151. RoundedRectangle(cornerRadius: 3)
  152. .fill(Color.gray.opacity(0.5))
  153. .frame(width: 40, height: 6)
  154. .padding(.vertical, 5)
  155. .frame(maxWidth: .infinity, alignment: .center)
  156.  
  157. }
  158. .padding(.horizontal)
  159. .padding(.top, 15)
  160. .padding(.bottom, screenGeometry.safeAreaInsets.bottom + 10)
  161. .background(.regularMaterial)
  162. .cornerRadius(20, corners: [.topLeft, .topRight])
  163. .foregroundColor(.primary)
  164. .font(.system(size: 12))
  165. }
  166. }
  167.  
  168. extension View {
  169. func cornerRadius(_ radius: CGFloat, corners: UIRectCorner) -> some View {
  170. clipShape( RoundedCorner(radius: radius, corners: corners) )
  171. }
  172. }
  173.  
  174. struct RoundedCorner: Shape {
  175. var radius: CGFloat = .infinity
  176. var corners: UIRectCorner = .allCorners
  177.  
  178. func path(in rect: CGRect) -> Path {
  179. let path = UIBezierPath(roundedRect: rect, byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius))
  180. return Path(path.cgPath)
  181. }
  182. }
  183.  
  184. struct ContentView_Previews: PreviewProvider {
  185. static var previews: some View {
  186. ContentView()
  187. .preferredColorScheme(.dark)
  188. }
  189. }
  190.  
  191.  
  192.  
  193. //WARNING//
  194. // SEPARATE FILE Shaders.metal
  195. //WARNING//
  196.  
  197. #include <metal_stdlib>
  198. using namespace metal;
  199.  
  200. #define MAX_STEPS 100
  201. #define MAX_DIST 100.0f
  202. #define HIT_THRESHOLD 0.001f
  203. #define NORMAL_EPSILON 0.001f
  204. #define M_PI_F 3.141592653589793f
  205.  
  206. struct VertexOut { float4 position [[position]]; float2 uv; };
  207. struct Uniforms { float time; float2 resolution; };
  208. struct ShapeUniforms { float4 positionAndRadius; float4 params1; float4 params2; };
  209.  
  210. float3 mod289(float3 x) { return x - floor(x * (1.0 / 289.0)) * 289.0; }
  211. float2 mod289(float2 x) { return x - floor(x * (1.0 / 289.0)) * 289.0; }
  212. float3 permute(float3 x) { return mod289(((x*34.0)+1.0)*x); }
  213. float snoise(float2 v) { const float4 C = float4(0.211324865405187, 0.366025403784439, -0.577350269189626, 0.024390243902439); float2 i = floor(v + dot(v, C.yy) ); float2 x0 = v - i + dot(i, C.xx); float2 i1 = (x0.x > x0.y) ? float2(1.0f, 0.0f) : float2(0.0f, 1.0f); float2 x1 = x0.xy + C.xx - i1; float2 x2 = x0.xy + C.zz; i = mod289(i); float3 p = permute( permute( i.y + float3(0.0f, i1.y, 1.0f )) + i.x + float3(0.0f, i1.x, 1.0f )); float3 m = max(0.5f - float3(dot(x0,x0), dot(x1,x1), dot(x2,x2)), 0.0f); m = m*m; m = m*m; float3 x = 2.0f * fract(p * C.www) - 1.0f; float3 h = abs(x) - 0.5f; float3 ox = floor(x + 0.5f); float3 a0 = x - ox; float3 g; g.x=a0.x*x0.x+h.x*x0.y; g.y=a0.y*x1.x+h.y*x1.y; g.z=a0.z*x2.x+h.z*x2.y; return 130.0f * dot(m, g); }
  214. float fbm_snoise(float2 p, int octaves) { float value = 0.0f; float amplitude = 0.5f; float frequency = 1.0f; for (int i = 0; i < octaves; ++i) { value += amplitude * (snoise(p * frequency) * 0.5f + 0.5f); frequency *= 2.0f; amplitude *= 0.5f; } return clamp(value, 0.0f, 1.0f); }
  215. float3 simpleDomainWarp(float2 uv, float scaled_time, float warpIntensity, int octaves) { float time1 = scaled_time * 1.0f; float time2 = scaled_time * 1.3f; float2 q = float2(fbm_snoise(uv + float2(0.0f, 0.0f) + time1, octaves), fbm_snoise(uv + float2(5.2f, 1.3f) + time2, octaves)); q = q * 2.0f - 1.0f; float2 warped_uv = uv + warpIntensity * q; float final_fbm = fbm_snoise(warped_uv + float2(1.7f, 9.2f) + scaled_time * 0.7f, octaves); return float3(final_fbm, warped_uv.x, warped_uv.y); }
  216.  
  217.  
  218. float sdSphere(float3 p, float3 center, float radius) { return length(p - center) - radius; }
  219. float mapScene(float3 p, constant ShapeUniforms& shapeUniforms) { float3 spherePos = shapeUniforms.positionAndRadius.xyz; float sphereRadius = shapeUniforms.positionAndRadius.w; float sphereDist = sdSphere(p, spherePos, sphereRadius); return sphereDist; }
  220. float3 calcNormal(float3 p, constant ShapeUniforms& shapeUniforms) { float2 e = float2(NORMAL_EPSILON, 0.0); return normalize(float3(mapScene(p + e.xyy, shapeUniforms) - mapScene(p - e.xyy, shapeUniforms), mapScene(p + e.yxy, shapeUniforms) - mapScene(p - e.yxy, shapeUniforms), mapScene(p + e.yyx, shapeUniforms) - mapScene(p - e.yyx, shapeUniforms))); }
  221.  
  222. float calcLighting(float3 pos, float3 normal, float3 lightDir) { float diffuse = max(0.0f, dot(normal, lightDir)); float ambient = 0.2f; return ambient + diffuse * 0.8f; }
  223.  
  224.  
  225. float3 calcBackground(float2 screen_uv, constant Uniforms& uniforms, constant ShapeUniforms& shapeUniforms, texture2d<half, access::sample> tex, sampler samp) {
  226. float aspect = uniforms.resolution.x / uniforms.resolution.y; float textureBlendFactor = shapeUniforms.params1.x; float warpIntensity = 3.0f; float animationSpeed = shapeUniforms.params1.z; float warmColorIntensity = shapeUniforms.params1.w; float noiseScale = shapeUniforms.params2.x; float contrastExponent = shapeUniforms.params2.y; float zoom = noiseScale * 0.8f; float time = (uniforms.time * animationSpeed); float warpTime = time * 0.06f; int octaves = 6; float2 uv_start_raw = (screen_uv - 0.5f) * float2(aspect, 1.0f) * zoom; float driftSpeedX = 0.03f; float driftSpeedY = 0.015f; float2 driftOffset = float2(time * driftSpeedX, time * driftSpeedY); float2 uv_start = uv_start_raw + driftOffset; float3 warp_result = simpleDomainWarp(uv_start, warpTime, warpIntensity, octaves); float f_raw = warp_result.x; float2 warped_uv = warp_result.yz; float f = pow(f_raw, contrastExponent); float3 color_deep_bg=float3(0.01f,0.02f,0.04f); float3 color_mid_cool=float3(0.1f,0.35f,0.5f); float3 color_warm_tint=float3(0.5f,0.3f,0.15f); float3 color_bright_cool=float3(0.7f,0.9f,1.0f); float3 color_highlight=float3(1.0f,1.0f,1.0f); float3 procedural_color; procedural_color=mix(color_deep_bg,color_mid_cool,smoothstep(0.05f,0.55f,f)); float warm_strength = warmColorIntensity; procedural_color=mix(procedural_color,color_warm_tint,smoothstep(0.25f,0.5f,f)*(1.0f-smoothstep(0.45f,0.65f,f))*warm_strength); float bright_cool_strength=0.9f; procedural_color=mix(procedural_color,color_bright_cool,smoothstep(0.55f,0.8f,f)*bright_cool_strength); float highlight_strength=1.0f; procedural_color=mix(procedural_color,color_highlight,smoothstep(0.8f,0.9f,f)*highlight_strength); float texture_scale = 1.0f; float2 warped_uv_normalized = warped_uv / zoom / float2(aspect, 1.0) + 0.5; float2 texture_uv = fract(warped_uv_normalized * texture_scale + screen_uv * texture_scale * 0.3f); half4 texColor = tex.sample(samp, texture_uv); float texture_mix_factor = textureBlendFactor; float3 combined_color = mix(procedural_color, float3(texColor.rgb), texture_mix_factor); combined_color *= (0.95f + f * 0.25f); float vignette_radius=0.7f; float vignette_smoothness=0.6f; float dist_from_center=distance(screen_uv,float2(0.5f)); float vignette=smoothstep(vignette_radius,vignette_radius - vignette_smoothness,dist_from_center); combined_color *= vignette; return combined_color;
  227. }
  228.  
  229.  
  230. vertex VertexOut ui_effect_vertex( uint vertexID [[vertex_id]], constant float4* positions [[buffer(0)]] ) {
  231. VertexOut out; out.position = positions[vertexID];
  232. out.uv = float2(out.position.x * 0.5f + 0.5f, out.position.y * -0.5f + 0.5f); return out;
  233. }
  234.  
  235.  
  236. // This is the main GPU function that runs for every pixel!
  237. fragment half4 ui_effect_fragment(
  238. VertexOut in [[stage_in]],
  239. constant Uniforms& uniforms [[buffer(1)]],
  240. constant ShapeUniforms& shapeUniforms [[buffer(2)]],
  241. texture2d<half, access::sample> bgTexture [[texture(0)]],
  242. sampler bgSampler [[sampler(0)]]
  243. ) {
  244.  
  245. float2 uv = in.uv; float aspect = uniforms.resolution.x / uniforms.resolution.y;
  246. float2 screenPos = (uv * 2.0f - 1.0f) * float2(aspect, 1.0f);
  247. float3 ro = float3(screenPos.x, screenPos.y, 2.0f); float3 rd = float3(0.0f, 0.0f, -1.0f);
  248.  
  249. float total_dist = 0.0f; float3 p = ro; bool hit = false;
  250. for (int i = 0; i < MAX_STEPS; ++i) { float d = mapScene(p, shapeUniforms); if (d < HIT_THRESHOLD) { hit = true; p += rd * d; break; } total_dist += d; p += rd * d; if (total_dist > MAX_DIST) { break; } }
  251.  
  252. // Grab all the parameters sent from the Swift code (sliders etc).
  253. float textureBlendFactor = shapeUniforms.params1.x; float warpIntensity = shapeUniforms.params1.y; float animationSpeed = shapeUniforms.params1.z; float warmColorIntensity = shapeUniforms.params1.w; float noiseScale = shapeUniforms.params2.x; float contrastExponent = shapeUniforms.params2.y;
  254. float scaledTime = uniforms.time * animationSpeed;
  255.  
  256. float3 final_color;
  257.  
  258. // Did our ray marching hit the sphere or just the background?
  259. if (hit) {
  260.  
  261. float3 normal = calcNormal(p, shapeUniforms);
  262. float3 n = normal; float phi = acos(clamp(n.y, -1.0f, 1.0f)); float theta = atan2(n.z, n.x);
  263. float2 sphereUV_raw; sphereUV_raw.x = theta / (2.0f * M_PI_F) + 0.5f; sphereUV_raw.y = phi / M_PI_F;
  264.  
  265. float rotationSpeed = -0.05;
  266. float rotationOffset = scaledTime * rotationSpeed;
  267. float2 sphereUV = sphereUV_raw;
  268. sphereUV.x = sphereUV.x + rotationOffset;
  269.  
  270. float sphereTime = scaledTime * 0.07f; float sphereNoiseScale = noiseScale; float sphereWarpIntensity = warpIntensity; int sphereOctaves = 6;
  271.  
  272. float3 sphereWarpResult = simpleDomainWarp(sphereUV * sphereNoiseScale, sphereTime, sphereWarpIntensity, sphereOctaves);
  273. float baseSphereNoiseRaw = sphereWarpResult.x; float2 warpedSphereUV_raw = sphereWarpResult.yz;
  274. float f = pow(baseSphereNoiseRaw, contrastExponent);
  275. float3 color_deep_bg=float3(0.01f,0.02f,0.04f); float3 color_mid_cool=float3(0.1f,0.35f,0.5f); float3 color_warm_tint=float3(0.5f,0.3f,0.15f); float3 color_bright_cool=float3(0.7f,0.9f,1.0f); float3 color_highlight=float3(1.0f,1.0f,1.0f);
  276. float3 proceduralSphereColor; proceduralSphereColor=mix(color_deep_bg,color_mid_cool,smoothstep(0.05f,0.55f,f)); float warm_strength = warmColorIntensity; proceduralSphereColor=mix(proceduralSphereColor,color_warm_tint,smoothstep(0.25f,0.5f,f)*(1.0f-smoothstep(0.45f,0.65f,f))*warm_strength); float bright_cool_strength=0.9f; proceduralSphereColor=mix(proceduralSphereColor,color_bright_cool,smoothstep(0.55f,0.8f,f)*bright_cool_strength); float highlight_strength=1.0f; proceduralSphereColor=mix(proceduralSphereColor,color_highlight,smoothstep(0.8f,0.9f,f)*highlight_strength);
  277.  
  278. float texture_scale = 1.2f; float2 warpedSphereUV_normalized = warpedSphereUV_raw / sphereNoiseScale;
  279. float2 sphereTextureUV = fract(warpedSphereUV_normalized * texture_scale + sphereUV * texture_scale * 0.3f);
  280. half4 texColor = bgTexture.sample(bgSampler, sphereTextureUV);
  281. float texture_mix_factor = textureBlendFactor; float3 combinedSphereColor = mix(proceduralSphereColor, float3(texColor.rgb), texture_mix_factor);
  282. float3 sphereBaseColor = combinedSphereColor * (1.1f + f * 0.5f);
  283.  
  284. float3 viewDir = -rd; float dotNV = dot(normal, viewDir); float rimPower = 3.5f; float fresnel = pow(1.0f - max(dotNV, 0.0f), rimPower); float3 rimColor = float3(0.9f, 1.0f, 1.1f); float rimIntensity = 0.6f; float3 rimContribution = rimColor * fresnel * rimIntensity;
  285.  
  286. final_color = sphereBaseColor + rimContribution;
  287.  
  288. } else {
  289.  
  290. final_color = calcBackground(in.uv, uniforms, shapeUniforms, bgTexture, bgSampler);
  291. }
  292.  
  293. return half4(half3(clamp(final_color, 0.0f, 1.0f)), 1.0h);
  294. }
  295.  
  296. //WARNING//
  297. // SEPERATE FILE ShapeUniforms.swift
  298. //WARNING//
  299.  
  300. import simd
  301. struct ShapeUniforms: Equatable {
  302. var positionAndRadius: SIMD4<Float>
  303. var params1: SIMD4<Float>
  304. var params2: SIMD4<Float>
  305.  
  306. // adjust default values as needed
  307. init(positionAndRadius: SIMD4<Float> = SIMD4<Float>(0, 0, 0, 0.5),
  308. params1: SIMD4<Float> = SIMD4<Float>(0.5, 1.8, 0.1, 0.6),
  309. params2: SIMD4<Float> = SIMD4<Float>(4.0, 1.8, 0.0, 0.0)) {
  310. self.positionAndRadius = positionAndRadius
  311. self.params1 = params1
  312. self.params2 = params2
  313. }
  314. }
  315.  
  316.  
  317. //WARNING//
  318. // SEPERATE FILE UIEffectRenderer.swift
  319. //WARNING//
  320.  
  321. import MetalKit
  322. import simd
  323.  
  324. struct UIEffectUniforms {
  325. var time: Float
  326. var resolution: SIMD2<Float>
  327. }
  328.  
  329. class UIEffectRenderer: NSObject, MTKViewDelegate {
  330.  
  331. let device: MTLDevice
  332. let commandQueue: MTLCommandQueue
  333. let pipelineState: MTLRenderPipelineState
  334. let vertexBuffer: MTLBuffer
  335.  
  336. var uniforms: UIEffectUniforms
  337. let uniformsBuffer: MTLBuffer
  338.  
  339. private(set) var currentShapeUniforms: ShapeUniforms = ShapeUniforms()
  340. private let shapeUniformsBuffer: MTLBuffer
  341.  
  342. let texture: MTLTexture
  343. let samplerState: MTLSamplerState
  344.  
  345. let startTime: Date
  346.  
  347. init?(metalKitView: MTKView) {
  348. guard let device = MTLCreateSystemDefaultDevice(),
  349. let commandQueue = device.makeCommandQueue() else {
  350. print("UIEffectRenderer Error: Metal is not supported.")
  351. return nil //gotta bail
  352. }
  353. self.device = device
  354. self.commandQueue = commandQueue
  355. self.startTime = Date()
  356.  
  357. metalKitView.device = device
  358. metalKitView.colorPixelFormat = .bgra8Unorm
  359. metalKitView.clearColor = MTLClearColor(red: 0, green: 0, blue: 0, alpha: 1)
  360. metalKitView.isPaused = false
  361. metalKitView.enableSetNeedsDisplay = false
  362.  
  363. do {
  364. let library = try device.makeDefaultLibrary(bundle: .main)
  365. guard let vertexFunction = library.makeFunction(name: "ui_effect_vertex"),
  366. let fragmentFunction = library.makeFunction(name: "ui_effect_fragment") else {
  367. print("UIEffectRenderer Error: Shader function 'ui_effect_vertex' or 'ui_effect_fragment' not found in default library. Check .metal file and function names.")
  368. return nil
  369. }
  370. let pipelineDescriptor = MTLRenderPipelineDescriptor()
  371. pipelineDescriptor.label = "SDF Effect Pipeline"
  372. pipelineDescriptor.vertexFunction = vertexFunction
  373. pipelineDescriptor.fragmentFunction = fragmentFunction
  374. pipelineDescriptor.colorAttachments[0].pixelFormat = metalKitView.colorPixelFormat
  375. self.pipelineState = try device.makeRenderPipelineState(descriptor: pipelineDescriptor)
  376. } catch {
  377. print("UIEffectRenderer Error: Failed to create Metal pipeline state: \(error). Check shader compilation.")
  378. return nil
  379. }
  380.  
  381. let quadVertices: [SIMD4<Float>] = [ .init(-1,-1,0,1), .init(1,-1,0,1), .init(-1,1,0,1), .init(1,-1,0,1), .init(1,1,0,1), .init(-1,1,0,1) ]
  382. guard let createdVertexBuffer = device.makeBuffer(bytes: quadVertices, length: quadVertices.count * MemoryLayout<SIMD4<Float>>.stride, options: .storageModeShared) else { print("UIEffectRenderer Error: Could not create vertex buffer."); return nil }
  383. self.vertexBuffer = createdVertexBuffer
  384. self.vertexBuffer.label = "Quad Vertices"
  385.  
  386. let textureLoader = MTKTextureLoader(device: device)
  387. let textureLoaderOptions: [MTKTextureLoader.Option: Any] = [.origin: MTKTextureLoader.Origin.topLeft, .generateMipmaps: true, .SRGB: false ]
  388. do {
  389. let textureName = "trippywave_texture"
  390. self.texture = try textureLoader.newTexture(name: textureName, scaleFactor: metalKitView.contentScaleFactor, bundle: nil, options: textureLoaderOptions)
  391. self.texture.label = "\(textureName) Texture"
  392. } catch {
  393. print("UIEffectRenderer Error: Failed loading texture '\("trippywave_texture")': \(error). Check Assets.xcassets.")
  394. return nil
  395. }
  396.  
  397. let samplerDescriptor = MTLSamplerDescriptor()
  398. samplerDescriptor.label = "BG Sampler"; samplerDescriptor.minFilter = .linear; samplerDescriptor.magFilter = .linear; samplerDescriptor.mipFilter = .linear; samplerDescriptor.sAddressMode = .repeat; samplerDescriptor.tAddressMode = .repeat
  399. guard let createdSamplerState = device.makeSamplerState(descriptor: samplerDescriptor) else { print("UIEffectRenderer Error: Failed to create sampler state."); return nil }
  400. self.samplerState = createdSamplerState
  401.  
  402. self.uniforms = UIEffectUniforms(time: 0.0, resolution: .zero)
  403. let uniformBufferSize = MemoryLayout<UIEffectUniforms>.stride
  404. guard let createdUniformsBuffer = device.makeBuffer(length: uniformBufferSize, options: .storageModeShared) else { print("UIEffectRenderer Error: Could not create uniforms buffer."); return nil }
  405. self.uniformsBuffer = createdUniformsBuffer
  406. self.uniformsBuffer.label = "Uniforms Buffer (Time/Res)"
  407.  
  408. let shapeUniformsSize = MemoryLayout<ShapeUniforms>.stride
  409. guard let createdShapeBuffer = device.makeBuffer(length: shapeUniformsSize, options: .storageModeShared) else { print("UIEffectRenderer Error: Could not create shape uniforms buffer."); return nil }
  410. self.shapeUniformsBuffer = createdShapeBuffer
  411. self.shapeUniformsBuffer.label = "Shape Uniforms Buffer"
  412. memset(self.shapeUniformsBuffer.contents(), 0, shapeUniformsSize)
  413.  
  414. super.init()
  415. print("UIEffectRenderer initialized successfully.")
  416. }
  417.  
  418. func updateShapeUniforms(_ newUniforms: ShapeUniforms) {
  419. self.currentShapeUniforms = newUniforms
  420. }
  421.  
  422. func mtkView(_ view: MTKView, drawableSizeWillChange size: CGSize) {
  423. uniforms.resolution = SIMD2<Float>(Float(size.width), Float(size.height))
  424. print("UIEffectRenderer: Drawable size changed to \(size.width)x\(size.height)")
  425. }
  426.  
  427. func draw(in view: MTKView) {
  428. guard let commandBuffer = commandQueue.makeCommandBuffer(),
  429. let currentDrawable = view.currentDrawable,
  430. let renderPassDescriptor = view.currentRenderPassDescriptor else {
  431. return
  432. }
  433. commandBuffer.label = "Effect Command Buffer"
  434.  
  435. guard let renderEncoder = commandBuffer.makeRenderCommandEncoder(descriptor: renderPassDescriptor) else {
  436. print("UIEffectRenderer Warning: Could not create render command encoder.")
  437. return
  438. }
  439. renderEncoder.label = "Effect Render Encoder"
  440.  
  441. uniforms.time = Float(Date().timeIntervalSince(startTime))
  442. uniformsBuffer.contents().copyMemory(from: &uniforms, byteCount: MemoryLayout<UIEffectUniforms>.stride)
  443.  
  444. var animatedShapeUniforms = currentShapeUniforms
  445. let floatSpeed: Float = 0.25
  446. let floatAmplitude: Float = 0.04
  447. let yOffset = sin(uniforms.time * floatSpeed * 2.0 * Float.pi) * floatAmplitude
  448. animatedShapeUniforms.positionAndRadius.y += yOffset
  449.  
  450. // Slap the latest shape data (with the floaty animation) into the GPU buffer
  451. let shapeDataPtr = shapeUniformsBuffer.contents().bindMemory(to: ShapeUniforms.self, capacity: 1)
  452. shapeDataPtr[0] = animatedShapeUniforms
  453.  
  454. renderEncoder.setRenderPipelineState(pipelineState)
  455. renderEncoder.setVertexBuffer(vertexBuffer, offset: 0, index: 0)
  456. renderEncoder.setFragmentBuffer(uniformsBuffer, offset: 0, index: 1)
  457. renderEncoder.setFragmentBuffer(shapeUniformsBuffer, offset: 0, index: 2) // This sends our shape struct data!
  458. renderEncoder.setFragmentTexture(texture, index: 0)
  459. renderEncoder.setFragmentSamplerState(samplerState, index: 0)
  460.  
  461. renderEncoder.drawPrimitives(type: .triangle, vertexStart: 0, vertexCount: 6) // Draw the actual fullscreen quad.
  462.  
  463. renderEncoder.endEncoding()
  464. commandBuffer.present(currentDrawable)
  465. commandBuffer.commit()
  466. }
  467. }
  468. //WARNING//
  469. // SEPERATE FILE UIEffectView.swift
  470. //WARNING//
  471.  
  472. import SwiftUI
  473. import MetalKit
  474.  
  475. struct UIEffectView: UIViewRepresentable {
  476. // holds all the parameters we get from ContentView for the shader
  477. var shapeUniforms: ShapeUniforms
  478.  
  479. @StateObject private var coordinator = Coordinator()
  480.  
  481. func makeUIView(context: Context) -> MTKView {
  482. print("UIEffectView: makeUIView")
  483. let mtkView = MTKView()
  484.  
  485. mtkView.delegate = context.coordinator
  486. mtkView.enableSetNeedsDisplay = false
  487. mtkView.isPaused = false
  488.  
  489. context.coordinator.setupRenderer(metalKitView: mtkView)
  490.  
  491. guard let renderer = context.coordinator.renderer else {
  492. print("UIEffectView Error: Renderer is nil after setup attempt in makeUIView.")
  493. return mtkView
  494. }
  495.  
  496. mtkView.device = renderer.device
  497. print("UIEffectView: MTKView device configured.")
  498.  
  499. renderer.updateShapeUniforms(shapeUniforms)
  500.  
  501. return mtkView
  502. }
  503.  
  504. func updateUIView(_ uiView: MTKView, context: Context) {
  505. print("UIEffectView: updateUIView")
  506. context.coordinator.renderer?.updateShapeUniforms(shapeUniforms)
  507. }
  508.  
  509. func makeCoordinator() -> Coordinator {
  510. print("UIEffectView: makeCoordinator")
  511. return coordinator
  512. }
  513.  
  514. class Coordinator: NSObject, MTKViewDelegate, ObservableObject {
  515. var renderer: UIEffectRenderer?
  516.  
  517. override init() {
  518. print("Coordinator: init")
  519. super.init()
  520. }
  521.  
  522. func setupRenderer(metalKitView: MTKView) {
  523. print("Coordinator: Setting up renderer...")
  524. self.renderer = UIEffectRenderer(metalKitView: metalKitView)
  525. if self.renderer == nil {
  526. print("Coordinator: Renderer initialization FAILED.")
  527. } else {
  528. print("Coordinator: Renderer initialized successfully.")
  529. }
  530. }
  531.  
  532. func mtkView(_ view: MTKView, drawableSizeWillChange size: CGSize) {
  533. renderer?.mtkView(view, drawableSizeWillChange: size)
  534. }
  535.  
  536. func draw(in view: MTKView) {
  537. renderer?.draw(in: view)
  538. }
  539. }
  540.  
  541. }
  542.  
  543.  
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement
Public Pastes
Advertisement
We use cookies for various purposes including analytics. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy.  OK, I Understand
Not a member of Pastebin yet?
Sign Up, it unlocks many cool features!