1 files changed, 18 insertions, 4 deletions
diff --git a/src/gpu/effects/post_process_helper.h b/src/gpu/effects/post_process_helper.h
index 8a9331b..77b184f 100644
--- a/src/gpu/effects/post_process_helper.h
+++ b/src/gpu/effects/post_process_helper.h
@@ -4,11 +4,25 @@
 #pragma once
 
 #include "gpu/gpu.h"
+#include "util/mini_math.h"
+
+// Uniform data common to all post-processing effects
+struct CommonPostProcessUniforms {
+  vec2 resolution;
+  float _pad[2]; // Padding for 16-byte alignment
+  float aspect_ratio;
+  float time;
+  float beat;
+  float audio_intensity;
+};
+static_assert(sizeof(CommonPostProcessUniforms) == 32,
+              "CommonPostProcessUniforms must be 32 bytes for WGSL alignment");
 
 // Standard post-process bind group layout (group 0):
-#define PP_BINDING_SAMPLER 0  // Sampler for input texture
-#define PP_BINDING_TEXTURE 1  // Input texture (previous render pass)
-#define PP_BINDING_UNIFORMS 2 // Custom uniforms buffer
+#define PP_BINDING_SAMPLER 0        // Sampler for input texture
+#define PP_BINDING_TEXTURE 1        // Input texture (previous render pass)
+#define PP_BINDING_UNIFORMS 2       // Custom uniforms buffer
+#define PP_BINDING_EFFECT_PARAMS 3  // Effect-specific parameters
 
 // Helper to create a standard post-processing pipeline
 // Uniforms are accessible to both vertex and fragment shaders
@@ -19,4 +33,4 @@ WGPURenderPipeline create_post_process_pipeline(WGPUDevice device,
 // Helper to update bind group for post-processing effects
 void pp_update_bind_group(WGPUDevice device, WGPURenderPipeline pipeline,
                           WGPUBindGroup* bind_group, WGPUTextureView input_view,
-                          GpuBuffer uniforms);
+                          GpuBuffer uniforms, GpuBuffer effect_params);