From b2ede3f0680edc894a54e28374cb87ab2690afa2 Mon Sep 17 00:00:00 2001
From: skal <pascal.massimino@gmail.com>
Date: Mon, 16 Feb 2026 14:32:59 +0100
Subject: refactor: remove v2 versioning artifacts, establish Sequence as
 canonical system
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Complete v1→v2 migration cleanup: rename 29 files (sequence_v2→sequence, effect_v2→effect, 14 effect files, 8 shaders, compiler, docs), update all class names and references across 54 files. Archive v1 timeline. System now uses standard naming with all versioning removed. 30/34 tests passing.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
---
 common/shaders/gaussian_blur.wgsl | 45 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 common/shaders/gaussian_blur.wgsl

(limited to 'common/shaders/gaussian_blur.wgsl')

diff --git a/common/shaders/gaussian_blur.wgsl b/common/shaders/gaussian_blur.wgsl
new file mode 100644
index 0000000..293977f
--- /dev/null
+++ b/common/shaders/gaussian_blur.wgsl
@@ -0,0 +1,45 @@
+// Gaussian blur shader for Sequence v2
+#include "sequence_uniforms"
+
+@group(0) @binding(0) var input_sampler: sampler;
+@group(0) @binding(1) var input_texture: texture_2d<f32>;
+@group(0) @binding(2) var<uniform> uniforms: UniformsSequenceParams;
+
+struct GaussianBlurParams {
+    direction: vec2<f32>,
+    radius: f32,
+    _pad: f32,
+};
+@group(0) @binding(3) var<uniform> params: GaussianBlurParams;
+
+struct VertexOutput {
+    @builtin(position) position: vec4<f32>,
+    @location(0) uv: vec2<f32>,
+};
+
+@vertex fn vs_main(@builtin(vertex_index) vid: u32) -> VertexOutput {
+    var out: VertexOutput;
+    let x = f32((vid & 1u) << 1u);
+    let y = f32((vid & 2u));
+    out.position = vec4<f32>(x * 2.0 - 1.0, 1.0 - y * 2.0, 0.0, 1.0);
+    out.uv = vec2<f32>(x, y);
+    return out;
+}
+
+@fragment fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
+    let texel_size = 1.0 / uniforms.resolution;
+    let offset = params.direction * texel_size;
+
+    var color = vec4<f32>(0.0);
+    let kernel_size = i32(params.radius);
+    var weight_sum = 0.0;
+
+    for (var i = -kernel_size; i <= kernel_size; i++) {
+        let sample_offset = f32(i) * offset;
+        let weight = exp(-f32(i * i) / (2.0 * params.radius * params.radius));
+        color += textureSample(input_texture, input_sampler, in.uv + sample_offset) * weight;
+        weight_sum += weight;
+    }
+
+    return color / weight_sum;
+}
-- 
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