From b9c2a0394343ff3586880d118b7d549b3e748cad Mon Sep 17 00:00:00 2001
From: skal <pascal.massimino@gmail.com>
Date: Sat, 28 Feb 2026 11:50:13 +0100
Subject: refactor(effects): co-locate effect WGSL shaders with their .h/.cc in
 src/effects/

Move 13 effect-specific shaders from workspaces/main/shaders/ to src/effects/
so each effect's .h, .cc, and .wgsl are together. Update assets.txt paths in
both main and test workspaces. Update EFFECT_WORKFLOW.md to reflect new location.
Shared/reusable snippets remain in src/shaders/.

handoff(Gemini): shaders moved; src/effects/ now has .h, .cc, and .wgsl per effect.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 src/effects/solarize.wgsl | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 src/effects/solarize.wgsl

(limited to 'src/effects/solarize.wgsl')

diff --git a/src/effects/solarize.wgsl b/src/effects/solarize.wgsl
new file mode 100644
index 0000000..02065de
--- /dev/null
+++ b/src/effects/solarize.wgsl
@@ -0,0 +1,46 @@
+@group(0) @binding(0) var smplr: sampler;
+@group(0) @binding(1) var txt: texture_2d<f32>;
+
+#include "common_uniforms"
+
+@group(0) @binding(2) var<uniform> uniforms: CommonUniforms;
+
+#include "render/fullscreen_vs"
+
+@fragment fn fs_main(@builtin(position) p: vec4f) -> @location(0) vec4f {
+    let uv = p.xy / uniforms.resolution;
+    var col = textureSample(txt, smplr, uv);
+
+    // Patterns are 2 seconds long (120 BPM, 4 beats)
+    let pattern_num = u32(uniforms.time / 2.0);
+    let is_even_pattern = (pattern_num % 2u) == 0u;
+
+    // Reduced threshold range for subtler effect
+    let thr = 0.4 + 0.15 * sin(uniforms.time);
+    let solarize_strength = 0.4;  // Reduced from 1.0 for less saturation
+
+    if (is_even_pattern) {
+        // Even patterns: Subtle red-orange tint
+        if (col.r < thr) {
+            col.r = mix(col.r, 1.0 - col.r, solarize_strength);
+        }
+        if (col.g < thr) {
+            col.g = mix(col.g, 1.0 - col.g * 0.7, solarize_strength * 0.7);
+        }
+        if (col.b < thr) {
+            col.b = mix(col.b, col.b * 0.5, solarize_strength);
+        }
+    } else {
+        // Odd patterns: Subtle blue-cyan tint
+        if (col.r < thr) {
+            col.r = mix(col.r, col.r * 0.6, solarize_strength);
+        }
+        if (col.g < thr) {
+            col.g = mix(col.g, 1.0 - col.g * 0.8, solarize_strength * 0.8);
+        }
+        if (col.b < thr) {
+            col.b = mix(col.b, 1.0 - col.b, solarize_strength);
+        }
+    }
+    return col;
+}
-- 
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