From 7790472dabfa0ecd06f3408d847860ec6072866e Mon Sep 17 00:00:00 2001
From: skal <pascal.massimino@gmail.com>
Date: Mon, 9 Feb 2026 18:51:54 +0100
Subject: feat: Implement workspace system (Task #77)

Self-contained workspaces for parallel demo development.

Structure:
- workspaces/main,test - Demo-specific resources
- assets/common - Shared resources
- workspace.cfg - Configuration per workspace

CMake integration:
- DEMO_WORKSPACE option (defaults to main)
- cmake/ParseWorkspace.cmake - Config parser
- Workspace-relative asset/timeline/music paths

Migration:
- Main demo: demo.seq to workspaces/main/timeline.seq
- Test demo: test_demo.seq to workspaces/test/timeline.seq
- Common shaders: assets/common/shaders
- Workspace shaders: workspaces/*/shaders

Build:
cmake -B build -DDEMO_WORKSPACE=main
cmake -B build_test -DDEMO_WORKSPACE=test

All tests passing (36/36).

handoff(Claude): Task #77 workspace system complete. Both main and test workspaces build and pass all tests.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
---
 workspaces/test/shaders/circle_mask_compute.wgsl | 35 ++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 workspaces/test/shaders/circle_mask_compute.wgsl

(limited to 'workspaces/test/shaders/circle_mask_compute.wgsl')

diff --git a/workspaces/test/shaders/circle_mask_compute.wgsl b/workspaces/test/shaders/circle_mask_compute.wgsl
new file mode 100644
index 0000000..484d3dd
--- /dev/null
+++ b/workspaces/test/shaders/circle_mask_compute.wgsl
@@ -0,0 +1,35 @@
+// Circle mask compute shader
+// Generates a circular mask (1.0 inside, 0.0 outside)
+
+#include "common_uniforms"
+struct CircleMaskParams {
+  radius: f32,
+  _pad0: f32,
+  _pad1: f32,
+  _pad2: f32,
+};
+
+@group(0) @binding(0) var<uniform> uniforms: CommonUniforms;
+@group(0) @binding(1) var<uniform> params: CircleMaskParams;
+
+struct VSOutput {
+  @builtin(position) position: vec4<f32>,
+};
+
+@vertex fn vs_main(@builtin(vertex_index) i: u32) -> VSOutput {
+  var pos = array<vec2<f32>, 3>(
+    vec2<f32>(-1, -1), vec2<f32>(3, -1), vec2<f32>(-1, 3));
+  return VSOutput(vec4<f32>(pos[i], 0.0, 1.0));
+}
+
+@fragment fn fs_main(@builtin(position) p: vec4<f32>) -> @location(0) vec4<f32> {
+  let uv = p.xy / uniforms.resolution;
+  let center = vec2<f32>(0.5, 0.5);
+  let aspect_corrected_uv = (uv - center) * vec2<f32>(uniforms.aspect_ratio, 1.0);
+  let dist = length(aspect_corrected_uv);
+
+  let edge_width = 0.01;
+  let mask = smoothstep(params.radius + edge_width, params.radius - edge_width, dist);
+
+  return vec4<f32>(mask, mask, mask, 1.0);
+}
-- 
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