1 files changed, 32 insertions, 0 deletions
diff --git a/src/effects/gaussian_blur_effect.h b/src/effects/gaussian_blur_effect.h
new file mode 100644
index 0000000..651c5c3
--- /dev/null
+++ b/src/effects/gaussian_blur_effect.h
@@ -0,0 +1,32 @@
+// This file is part of the 64k demo project.
+// It declares the GaussianBlurEffect.
+
+#pragma once
+
+#include "gpu/effect.h"
+#include "gpu/uniform_helper.h"
+
+// Parameters for GaussianBlurEffect (set at construction time)
+struct GaussianBlurParams {
+  float strength = 1.0f; // Default
+  float strength_audio = 0.5f; // how much to pulse with audio
+  float stretch = 1.f;   // y/x axis ratio
+  float _pad = 0.;
+};
+static_assert(sizeof(GaussianBlurParams) == 16,
+              "GaussianBlurParams must be 16 bytes for WGSL alignment");
+
+class GaussianBlurEffect : public PostProcessEffect {
+ public:
+  // Backward compatibility constructor (uses default params)
+  GaussianBlurEffect(const GpuContext& ctx);
+  // New parameterized constructor
+  GaussianBlurEffect(const GpuContext& ctx, const GaussianBlurParams& params);
+  void render(WGPURenderPassEncoder pass,
+              const CommonPostProcessUniforms& uniforms) override;
+  void update_bind_group(WGPUTextureView input_view) override;
+
+ private:
+  GaussianBlurParams params_;
+  UniformBuffer<GaussianBlurParams> params_buffer_;
+};