Function apply_filter 

pub fn apply_filter<T: Pod>(
    context: &GpuContext,
    input: &GpuBuffer<T>,
    width: u32,
    height: u32,
    kernel_data: &[f32],
    kernel_size: u32,
) -> GpuResult<GpuBuffer<T>>

Apply custom convolution filter.

Errors

Returns an error if GPU operations fail.