added random seed

shaders/video-cube/shader.json

@@ -36,7 +36,7 @@
       "id": "backgroundMix",
       "label": "Background Mix",
       "type": "float",
-      "default": 0.15,
+      "default": 0.0,
       "min": 0.0,
       "max": 1.0,
       "step": 0.01

shaders/video-cube/shader.slang

@@ -75,7 +75,7 @@ float4 shadeVideo(ShaderContext context)
 	float3 rayOrigin = float3(0.0, 0.0, 2.7);
 	float3 rayDirection = normalize(float3(centeredUv, -2.1));
 
-	float spin = context.time * spinSpeed;
+	float spin = context.time * spinSpeed + context.startupRandom * 6.2831853;
 	float yaw = spin;
 	float pitch = spin * 0.61 + 0.35;