feat(visuals): Enhance colors and add background flashes

Improves the audio-visual synchronization by increasing peak amplification and adding dynamic background flashes.

- src/gpu/gpu.cc: Updated fragment shader with more vibrant hue calculation and implemented reactive clear color for flashes.

- src/main.cc: Increased peak multiplier to 150x and added non-linear boost for strong peaks.

1 files changed, 8 insertions, 2 deletions

diff --git a/src/main.cc b/src/main.cc
index f612868..d564de0 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -133,8 +133,14 @@ int main(int argc, char **argv) {
     glfwGetFramebufferSize(platform_get_window(), &width, &height);
     float aspect_ratio = (float)width / (float)height;
 
-    float visual_peak = fminf(synth_get_output_peak() * 80.0f, 1.0f);
-    gpu_draw(visual_peak, aspect_ratio);
+    // Stronger amplification for visuals
+    float raw_peak = synth_get_output_peak();
+    float visual_peak = raw_peak * 150.0f;
+    
+    // Add a non-linear boost for loud peaks to make flashes pop
+    if (visual_peak > 0.5f) visual_peak += (visual_peak - 0.5f) * 0.5f;
+
+    gpu_draw(fminf(visual_peak, 1.0f), aspect_ratio);
     audio_update();
   }