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#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)
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