1 files changed, 11 insertions, 1 deletions
diff --git a/tools/seq_compiler.py b/tools/seq_compiler.py
index 3b8d126..70faf5b 100755
--- a/tools/seq_compiler.py
+++ b/tools/seq_compiler.py
@@ -446,6 +446,16 @@ def main():
         print("Error: No sequences found in input file", file=sys.stderr)
         sys.exit(1)
 
+    # Sort sequences by start time
+    sequences.sort(key=lambda s: s.start_time)
+
+    # Calculate demo duration from max effect end time (absolute time)
+    demo_duration = 0.0
+    for seq in sequences:
+        for effect in seq.effects:
+            # Effect times are relative to sequence start
+            demo_duration = max(demo_duration, seq.start_time + effect.end)
+
     # Process each sequence
     all_cpp = '''// Generated by seq_compiler.py
 // DO NOT EDIT
@@ -523,7 +533,7 @@ void RenderTimeline(WGPUCommandEncoder encoder, float time, int width, int heigh
 }
 
 float GetDemoDuration() {
-    return 40.0f;  // TODO: Calculate from sequences
+    return ''' + f'{demo_duration:.1f}f' + ''';
 }
 
 // Surface-based rendering with framebuffers