1 files changed, 90 insertions, 0 deletions

diff --git a/llama.cpp/ggml/src/ggml-webgpu/wgsl-shaders/scale.tmpl.wgsl b/llama.cpp/ggml/src/ggml-webgpu/wgsl-shaders/scale.tmpl.wgsl
new file mode 100644
index 0000000..040e80d
--- /dev/null
+++ b/llama.cpp/ggml/src/ggml-webgpu/wgsl-shaders/scale.tmpl.wgsl
@@ -0,0 +1,90 @@
+#define(VARIANTS)
+
+[
+  {
+    "SHADER_NAME": "scale_f32",
+    "DECLS": ["NOT_INPLACE"]
+  },
+  {
+    "SHADER_NAME": "scale_f32_inplace",
+    "DECLS": ["INPLACE"]
+  }
+]
+
+#end(VARIANTS)
+
+#define(DECLS)
+
+#decl(NOT_INPLACE)
+@group(0) @binding(1)
+var<storage, read_write> dst: array<f32>;
+
+@group(0) @binding(2)
+var<uniform> params: Params;
+
+fn store_scale(val: f32, offset: u32) {
+    dst[offset] = val;
+}
+#enddecl(NOT_INPLACE)
+
+#decl(INPLACE)
+@group(0) @binding(1)
+var<uniform> params: Params;
+
+fn store_scale(val: f32, offset: u32) {
+    src[offset] = val;
+}
+#enddecl(INPLACE)
+
+#end(DECLS)
+
+#define(SHADER)
+
+struct Params {
+    offset_src: u32,
+    offset_dst: u32,
+
+    // Strides (in elements)
+    stride_src1: u32,
+    stride_src2: u32,
+    stride_src3: u32,
+
+    stride_dst1: u32,
+    stride_dst2: u32,
+    stride_dst3: u32,
+
+    ne: u32,
+    ne0: u32,
+    ne1: u32,
+    ne2: u32,
+
+    scale: f32,
+    bias: f32
+};
+
+@group(0) @binding(0)
+var<storage, read_write> src: array<f32>;
+
+DECLS
+
+override wg_size: u32;
+@compute @workgroup_size(wg_size)
+fn main(@builtin(global_invocation_id) gid: vec3<u32>) {
+    if (gid.x >= params.ne) {
+        return;
+    }
+
+    var i = gid.x;
+    let i3 = i / (params.ne2 * params.ne1 * params.ne0);
+    i = i % (params.ne2 * params.ne1 * params.ne0);
+    let i2 = i / (params.ne1 * params.ne0);
+    i = i % (params.ne1 * params.ne0);
+    let i1 = i / params.ne0;
+    let i0 = i % params.ne0;
+
+    let i_src = params.offset_src + i3 * params.stride_src3 + i2 * params.stride_src2 + i1 * params.stride_src1 + i0;
+    let i_dst = params.offset_dst + i3 * params.stride_dst3 + i2 * params.stride_dst2 + i1 * params.stride_dst1 + i0;
+
+    store_scale(src[i_src] * params.scale + params.bias, i_dst);
+}
+#end(SHADER)