1 files changed, 4 insertions, 2 deletions
diff --git a/src/gpu/effects/circle_mask_effect.h b/src/gpu/effects/circle_mask_effect.h
index ac44210..bf9cdfb 100644
--- a/src/gpu/effects/circle_mask_effect.h
+++ b/src/gpu/effects/circle_mask_effect.h
@@ -21,10 +21,12 @@ class CircleMaskEffect : public Effect {
               float intensity, float aspect_ratio) override;
 
  private:
-  struct EffectParams {
+  struct CircleMaskParams {
     float radius;
     float _pad[3];
   };
+  static_assert(sizeof(CircleMaskParams) == 16,
+                "CircleMaskParams must be 16 bytes for WGSL alignment");
 
   MainSequence* demo_ = nullptr;
   float radius_;
@@ -32,7 +34,7 @@ class CircleMaskEffect : public Effect {
   WGPURenderPipeline compute_pipeline_ = nullptr;
   WGPUBindGroup compute_bind_group_ = nullptr;
   UniformBuffer<CommonPostProcessUniforms> compute_uniforms_;
-  UniformBuffer<EffectParams> compute_params_;
+  UniformBuffer<CircleMaskParams> compute_params_;
 
   WGPURenderPipeline render_pipeline_ = nullptr;
   WGPUBindGroup render_bind_group_ = nullptr;