Initial commit

shaders/simpleGravity.wgsl

@@ -0,0 +1,72 @@
+@group(0) @binding(0)
+var<storage, read_write> positions : array<vec4<f32>>;
+
+@group(0) @binding(1)
+var<storage, read_write> velocities : array<vec4<f32>>;
+
+
+@group(0) @binding(2)
+var<uniform> deltaTime : f32;
+
+@group(0) @binding(3)
+var<uniform> aspectRatio : f32;
+
+@group(0) @binding(4)
+var<uniform> mousePos : vec2<f32>;
+
+@group(0) @binding(5)
+var<uniform> hoverRadius : f32;
+
+@group(0) @binding(6)
+var<storage, read_write> states : array<u32>;
+
+
+@compute @workgroup_size(64)
+fn main(@builtin(global_invocation_id) id : vec3<u32>) {
+
+	let index = id.x;
+let gravity = vec3<f32>(0.0, -29.61, 0.0);
+
+var pos = positions[index];
+var vel = velocities[index];
+
+// Apply gravity to velocity
+
+
+// Integrate position
+let dist = distance(vec2<f32>(pos.x*aspectRatio, pos.y), mousePos);
+
+var newPos = pos.xyz;
+
+if (dist < hoverRadius) {
+
+	states[index] = 1;
+
+}
+
+if ( states[index] == 1 ) {
+
+	let newVel = vel.xyz + gravity * deltaTime;
+
+	newPos = pos.xyz + newVel * 0.001;
+
+	velocities[index] = vec4<f32>(newVel, vel.w);
+
+	positions[index]  = vec4<f32>(newPos, pos.w);
+
+} else {
+
+	let newVel = vel.xyz;
+
+	newPos = pos.xyz + newVel * 0.001;
+
+	velocities[index] = vec4<f32>(newVel, vel.w);
+
+
+	positions[index]  = vec4<f32>(newPos, pos.w);
+}
+
+// Store updated values
+
+
+}