From 850388bcaabf057beed8f126002b7b663183b2d8 Mon Sep 17 00:00:00 2001
From: skal <pascal.massimino@gmail.com>
Date: Fri, 20 Feb 2026 12:08:34 +0100
Subject: feat(sequence): port Scene1Effect + fix seq_compiler absolute time
 bug
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- Add Scene1 effect: raymarching cube+sphere+ground (reflections, shadows)
- Fix scene1.wgsl: binding 0→2, CommonUniforms→UniformsSequenceParams
- Replace Heptagon+Placeholder stub in heptagon_scene with Scene1
- Fix seq_compiler.py: emit seq.start_time+effect.start/end (absolute times)
  so dispatch_render active check works correctly for all sequences

Bug: effects in sequences starting after t=0 were never active because
local times (e.g. 0-8) never satisfied params.time<end for absolute time 20+.

34/34 tests passing.

handoff(Gemini): seq_compiler now emits absolute effect times. All existing
sequences affected — verify visual output across the full timeline.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 workspaces/main/shaders/scene1.wgsl | 4 ++--
 workspaces/main/timeline.seq        | 4 +---
 2 files changed, 3 insertions(+), 5 deletions(-)

(limited to 'workspaces/main')

diff --git a/workspaces/main/shaders/scene1.wgsl b/workspaces/main/shaders/scene1.wgsl
index 8d5d5db..2f1174a 100644
--- a/workspaces/main/shaders/scene1.wgsl
+++ b/workspaces/main/shaders/scene1.wgsl
@@ -1,13 +1,13 @@
 // Scene1 effect shader - ShaderToy conversion (raymarching cube & sphere)
 // Source: Saturday cubism experiment by skal
 
-#include "common_uniforms"
+#include "sequence_uniforms"
 #include "math/color"
 #include "math/utils"
 #include "math/sdf_shapes"
 #include "render/raymarching"
 
-@group(0) @binding(0) var<uniform> uniforms: CommonUniforms;
+@group(0) @binding(2) var<uniform> uniforms: UniformsSequenceParams;
 
 const PI: f32 = 3.141592654;
 const TAU: f32 = 6.283185307;
diff --git a/workspaces/main/timeline.seq b/workspaces/main/timeline.seq
index 77f013d..2b843a7 100644
--- a/workspaces/main/timeline.seq
+++ b/workspaces/main/timeline.seq
@@ -25,9 +25,7 @@ SEQUENCE 16.00 2 "hybrid_heptagon"
   EFFECT + Hybrid3D temp1 -> sink 0.00 4.00
 
 SEQUENCE 20.00 0 "heptagon_scene"
-  # Heptagon -> Scene1 (placeholder) -> sink
-  EFFECT + Heptagon source -> temp1 0.00 8.00
-  EFFECT + Placeholder temp1 -> sink 0.00 8.00
+  EFFECT + Scene1 source -> sink 0.00 8.00
 
 SEQUENCE 28.00 0 "fade_test"
   # Heptagon -> Fade (placeholder) -> sink
-- 
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