feat(shaders): Standardize all shaders to use CommonUniforms

Define CommonUniforms struct with standard fields:
- resolution: vec2<f32>
- aspect_ratio: f32
- time: f32
- beat: f32
- audio_intensity: f32

Updated 14 shaders to use CommonUniforms:
- Replaced width/height with resolution
- Unified intensity/audio_peak → audio_intensity
- Moved effect-specific params to EffectParams struct
- visual_debug.wgsl now uses GlobalUniforms.view_proj

All shaders now have consistent uniform interface.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

1 files changed, 11 insertions, 9 deletions

diff --git a/assets/final/shaders/chroma_aberration.wgsl b/assets/final/shaders/chroma_aberration.wgsl
index f1a3034..ca1e17d 100644
--- a/assets/final/shaders/chroma_aberration.wgsl
+++ b/assets/final/shaders/chroma_aberration.wgsl
@@ -1,18 +1,20 @@
 @group(0) @binding(0) var smplr: sampler;
 @group(0) @binding(1) var txt: texture_2d<f32>;
 
-struct Uniforms {
+struct CommonUniforms {
+    resolution: vec2<f32>,
+    aspect_ratio: f32,
     time: f32,
     beat: f32,
-    intensity: f32,
-    aspect_ratio: f32,
-    width: f32,
-    height: f32,
+    audio_intensity: f32,
+};
+struct EffectParams {
     offset_scale: f32,
     angle: f32,
 };
 
-@group(0) @binding(2) var<uniform> uniforms: Uniforms;
+@group(0) @binding(2) var<uniform> common: CommonUniforms;
+@group(0) @binding(3) var<uniform> params: EffectParams;
 
 @vertex fn vs_main(@builtin(vertex_index) i: u32) -> @builtin(position) vec4<f32> {
     var pos = array<vec2<f32>, 3>(
@@ -24,11 +26,11 @@ struct Uniforms {
 }
 
 @fragment fn fs_main(@builtin(position) p: vec4<f32>) -> @location(0) vec4<f32> {
-    let uv = p.xy / vec2<f32>(uniforms.width, uniforms.height);
+    let uv = p.xy / common.resolution;
 
     // Compute offset magnitude and direction
-    let offset_mag = uniforms.offset_scale * uniforms.intensity;
-    let offset_dir = vec2<f32>(cos(uniforms.angle), sin(uniforms.angle));
+    let offset_mag = params.offset_scale * common.audio_intensity;
+    let offset_dir = vec2<f32>(cos(params.angle), sin(params.angle));
     let offset = offset_mag * offset_dir;
 
     // Sample RGB channels with chromatic aberration