1 files changed, 34 insertions, 14 deletions
diff --git a/src/gpu/effects/gaussian_blur_effect.cc b/src/gpu/effects/gaussian_blur_effect.cc
index f1736bf..3975aff 100644
--- a/src/gpu/effects/gaussian_blur_effect.cc
+++ b/src/gpu/effects/gaussian_blur_effect.cc
@@ -1,26 +1,46 @@
 // This file is part of the 64k demo project.
-// It implements the GaussianBlurEffect.
+// It implements the GaussianBlurEffect with parameterization.
 
 #include "gpu/demo_effects.h"
+#include "gpu/effects/post_process_helper.h"
 #include "gpu/gpu.h"
 
 // --- GaussianBlurEffect ---
+
+// Backward compatibility constructor (delegates to parameterized constructor)
 GaussianBlurEffect::GaussianBlurEffect(const GpuContext& ctx)
-    : PostProcessEffect(ctx) {
-  uniforms_ =
-      gpu_create_buffer(ctx_.device, sizeof(float) * 6,
-                        WGPUBufferUsage_Uniform | WGPUBufferUsage_CopyDst);
+    : GaussianBlurEffect(ctx, GaussianBlurParams{}) {
+}
+
+// Parameterized constructor
+GaussianBlurEffect::GaussianBlurEffect(const GpuContext& ctx,
+                                       const GaussianBlurParams& params)
+    : PostProcessEffect(ctx), params_(params) {
   pipeline_ = create_post_process_pipeline(ctx_.device, ctx_.format,
                                            gaussian_blur_shader_wgsl);
+  uniforms_.init(ctx_.device);
 }
-void GaussianBlurEffect::render(WGPURenderPassEncoder pass, float t, float b,
-                                float i, float a) {
-  struct {
-    float t, b, i, a, w, h;
-  } u = {t, b, i, a, (float)width_, (float)height_};
-  wgpuQueueWriteBuffer(ctx_.queue, uniforms_.buffer, 0, &u, sizeof(u));
-  PostProcessEffect::render(pass, t, b, i, a);
+
+void GaussianBlurEffect::render(WGPURenderPassEncoder pass, float time,
+                                float beat, float intensity,
+                                float aspect_ratio) {
+  // Update uniforms with current state and parameters
+  const GaussianBlurUniforms u = {.time = time,
+                                  .beat = beat,
+                                  .intensity = intensity,
+                                  .aspect_ratio = aspect_ratio,
+                                  .width = (float)width_,
+                                  .height = (float)height_,
+                                  .strength = params_.strength,
+                                  ._pad = 0.0f};
+  uniforms_.update(ctx_.queue, u);
+
+  wgpuRenderPassEncoderSetPipeline(pass, pipeline_);
+  wgpuRenderPassEncoderSetBindGroup(pass, 0, bind_group_, 0, nullptr);
+  wgpuRenderPassEncoderDraw(pass, 3, 1, 0, 0);
 }
-void GaussianBlurEffect::update_bind_group(WGPUTextureView v) {
-  pp_update_bind_group(ctx_.device, pipeline_, &bind_group_, v, uniforms_);
+
+void GaussianBlurEffect::update_bind_group(WGPUTextureView input_view) {
+  pp_update_bind_group(ctx_.device, pipeline_, &bind_group_, input_view,
+                       uniforms_.get());
 }