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shaders/add_residual.wgsl

@@ -0,0 +1,14 @@
+// add_residual.wgsl — a[i] += b[i], in-place.
+// Used for the residual connection: hidden_state += out_proj_output.
+
+struct Params { n: u32, }
+@group(0) @binding(0) var<storage, read_write> a_buf: array<f32>;
+@group(0) @binding(1) var<storage, read>       b_buf: array<f32>;
+@group(1) @binding(0) var<uniform> params: Params;
+
+@compute @workgroup_size(64)
+fn main(@builtin(global_invocation_id) gid: vec3<u32>) {
+    let i = gid.x;
+    if (i >= params.n) { return; }
+    a_buf[i] = a_buf[i] + b_buf[i];
+}