Updated kernel args match

vcl/bytes.c.v

@@ -44,3 +44,8 @@ pub fn (b &Bytes) data() ?[]u8 {
 pub fn (b &Bytes) map(mut k Kernel) chan IError {
 	return k.global(b.buf.size).local(1).run(b)
 }
+
+// buffer returns the underlying buffer
+pub fn (b &Bytes) buffer() &Buffer {
+	return b.buf
+}

vcl/image.c.v

@@ -193,3 +193,8 @@ fn (d &Device) create_image_general(image_type ImageChannelOrder, bounds Rect, r
 		desc: desc
 	}
 }
+
+// buffer returns the underlying buffer
+fn (image &Image) buffer() &Buffer {
+	return image.buf
+}

vcl/kernel.c.v

@@ -140,6 +140,9 @@ fn (k &Kernel) set_arg(index int, arg ArgumentType) ? {
 		u64 {
 			return k.set_arg_unsafe(index, int(sizeof(arg)), unsafe { &arg })
 		}
+		Buffer {
+			return k.set_arg_buffer(index, arg)
+		}
 		Bytes {
 			return k.set_arg_buffer(index, arg.buf)
 		}

vcl/vector.c.v

@@ -51,3 +51,8 @@ pub fn (v &Vector[T]) data() ?[]T {
 pub fn (v &Vector[T]) map(k &Kernel) chan IError {
 	return k.global(v.length()).local(1).run(v)
 }
+
+// buffer returns the underlying buffer
+pub fn (v &Vector[T]) buffer() &Buffer {
+	return v.buf
+}