src/app/pages/algorithms/pendulum/pendulum.component.ts

@@ -17,13 +17,15 @@ import {PENDULUM_FRAGMENT_SHADER_WGSL, PENDULUM_PHYSIC_COMPUTE_SHADER_WGSL, PEND
   styleUrl: './pendulum.component.scss',
 })
 export class PendulumComponent {
+
   renderConfig: RenderConfig = {
     mode: '2D',
     initialViewSize: 2,
     shaderLanguage: ShaderLanguage.WGSL,
     vertexShader: PENDULUM_VERTEX_SHADER_WGSL,
     fragmentShader: PENDULUM_FRAGMENT_SHADER_WGSL,
-    uniformNames: ["params"]
+    uniformNames: [],
+    uniformBufferNames: ["params"]
   };
 
   onSceneReady(event: SceneReadyEvent) {
@@ -36,17 +38,11 @@ export class PendulumComponent {
     const height = engine.getRenderHeight();
     const totalPixels = width * height;
 
-    console.log("Width and Height ", width, height);
-
-    // A. Buffer Setup
-    // 1. Pixel Buffer (wie gehabt)
     const pixelBuffer = new StorageBuffer(engine, totalPixels * 4);
 
-    // 2. State Buffer (4 Floats: theta1, theta2, v1, v2)
     const stateBuffer = new StorageBuffer(engine, 4 * 4);
     stateBuffer.update(new Float32Array([Math.PI / 4, Math.PI / 2, 0, 0]));
 
-    // 3. Params Uniform Buffer
     const ubo = new UniformBuffer(engine);
     ubo.addUniform("resolution", 2);
     ubo.addUniform("time", 1);
@@ -57,13 +53,10 @@ export class PendulumComponent {
     ubo.addUniform("l1", 1);
     ubo.addUniform("l2", 1);
     ubo.addUniform("damping", 1);
-    ubo.addUniform("pad1", 1); //Alignment
-    ubo.addUniform("pad2", 1); //Alignment
+    ubo.addUniform("pad1", 1);
+    ubo.addUniform("pad2", 1);
     ubo.update();
 
-    // B. Compute Shaders Setup
-
-    // CS1: Physics
     const csPhysics = new ComputeShader("physics", engine, {
       computeSource: PENDULUM_PHYSIC_COMPUTE_SHADER_WGSL
     }, {
@@ -75,7 +68,6 @@ export class PendulumComponent {
     csPhysics.setStorageBuffer("state", stateBuffer);
     csPhysics.setUniformBuffer("p", ubo);
 
-    // CS2: Render/Trail
     const csRender = new ComputeShader("render", engine, {
       computeSource: PENDULUM_RENDER_COMPUTE_SHADER_WGSL
     }, {
@@ -89,7 +81,6 @@ export class PendulumComponent {
     csRender.setUniformBuffer("p", ubo);
     csRender.setStorageBuffer("state", stateBuffer);
 
-    // C. Material Setup (Anzeige)
     const plane = scene.getMeshByName("plane");
     if (plane?.material) {
       const mat = plane.material as any;
@@ -97,39 +88,33 @@ export class PendulumComponent {
       mat.setUniformBuffer("params", ubo);
     }
 
-    // D. Simulation Loop
     let time = 0;
-
-    // Physik Parameter
     const dt = 0.015;
-    const g = 9.81;
-    const m1 = 2.0;
-    const m2 = 1.0;
-    const l1 = 1.5;
-    const l2 = 1.2;
-    const damping = 0.99;
 
+    // Du hast die Physik wieder drin gelassen, das ist super:
     scene.onBeforeRenderObservable.add(() => {
       time += dt;
 
-      // Update Params
-      ubo.updateFloat2("resolution", width, height);
+      const currentWidth = engine.getRenderWidth();
+      const currentHeight = engine.getRenderHeight();
+
+      ubo.updateFloat2("resolution", currentWidth, currentHeight);
       ubo.updateFloat("time", time);
       ubo.updateFloat("dt", dt);
-      ubo.updateFloat("g", g);
-      ubo.updateFloat("m1", m1);
-      ubo.updateFloat("m2", m2);
-      ubo.updateFloat("l1", l1);
-      ubo.updateFloat("l2", l2);
-      ubo.updateFloat("damping", damping);
+      ubo.updateFloat("g", 9.81);
+      ubo.updateFloat("m1", 2.0);
+      ubo.updateFloat("m2", 1.0);
+      ubo.updateFloat("l1", 1.5);
+      ubo.updateFloat("l2", 1.2);
+      ubo.updateFloat("damping", 0.99);
       ubo.updateFloat("pad1", 0);
       ubo.updateFloat("pad2", 0);
       ubo.update();
 
-      // Do physics (1 thread)
+      // Physik Dispatch an
       csPhysics.dispatch(1, 1, 1);
 
-      // Paint per pixel
+      const totalPixels = currentWidth * currentHeight;
       const dispatchCount = Math.ceil(totalPixels / 64);
       csRender.dispatch(dispatchCount, 1, 1);
     });

src/app/pages/algorithms/pendulum/pendulum.shader.ts

@@ -15,7 +15,7 @@
 export const PENDULUM_FRAGMENT_SHADER_WGSL = `
     varying vUV : vec2<f32>;
     var<storage, read> pixelBuffer : array<f32>;
-    var<uniform> params : Params;
+    var<uniform> params : Params; // Zurück zum bewährten Struct!
 
     struct Params {
       resolution: vec2<f32>,
@@ -27,23 +27,26 @@ export const PENDULUM_FRAGMENT_SHADER_WGSL = `
       l1: f32,
       l2: f32,
       damping: f32,
-      pad1: f32, // <-- Alignment
-      pad2: f32  // <-- Alignment
+      pad1: f32,
+      pad2: f32
     };
 
     @fragment
     fn main(input : FragmentInputs) -> FragmentOutputs {
       let width = u32(params.resolution.x);
-      let x = u32(input.vUV.x * params.resolution.x);
-      let y = u32(input.vUV.y * params.resolution.y);
+      let height = u32(params.resolution.y);
+
+      // clamp schützt uns vor Abstürzen durch Rundungsfehler am Bildschirmrand
+      let x = clamp(u32(input.vUV.x * params.resolution.x), 0u, width - 1u);
+      let y = clamp(u32(input.vUV.y * params.resolution.y), 0u, height - 1u);
+
       let index = y * width + x;
 
       let val = pixelBuffer[index];
 
-      // Hintergrund = Dunkelgrau, Linien = Grau, Massen = Weiß
       var color = vec3<f32>(0.1, 0.1, 0.15);
-      if (val > 0.1) { color = vec3<f32>(0.5, 0.5, 0.5); } // Linie
-      if (val > 0.8) { color = vec3<f32>(1.0, 1.0, 1.0); } // Masse
+      if (val > 0.1) { color = vec3<f32>(0.5, 0.5, 0.5); }
+      if (val > 0.8) { color = vec3<f32>(1.0, 1.0, 1.0); }
 
       fragmentOutputs.color = vec4<f32>(color, 1.0);
       return fragmentOutputs;

src/app/shared/rendering/canvas/babylon-canvas.component.ts

@@ -8,6 +8,7 @@ export interface RenderConfig {
   vertexShader: string;
   fragmentShader: string;
   uniformNames: string[];
+  uniformBufferNames?: string[];
 }
 
 export type RenderCallback = (material: ShaderMaterial, camera: Camera, canvas: HTMLCanvasElement, scene: Scene) => void;
@@ -142,6 +143,7 @@ export class BabylonCanvas implements AfterViewInit, OnDestroy {
       {
         attributes: ["position", "uv"],
         uniforms: ["resolution", "cameraPosition", ...this.config.uniformNames],
+        uniformBuffers: this.config.uniformBufferNames ?? [],
         shaderLanguage: this.config.shaderLanguage ?? ShaderLanguage.GLSL
       }
     );