diff --git a/src/Runtime.zig b/src/Runtime.zig
index 207c641..e38882c 100644
--- a/src/Runtime.zig
+++ b/src/Runtime.zig
@@ -150,22 +150,6 @@ pub fn callEntryPoint(self: *Self, allocator: std.mem.Allocator, entry_point_ind
     //}) catch return RuntimeError.OutOfMemory;
 }
 
-pub fn readOutput(self: *const Self, output: []u8, result: SpvWord) RuntimeError!void {
-    if (std.mem.indexOfScalar(SpvWord, &self.mod.output_locations, result)) |_| {
-        try self.readValue(output, &self.results[result]);
-    } else {
-        return RuntimeError.NotFound;
-    }
-}
-
-pub fn writeInput(self: *const Self, comptime T: type, input: []const T, result: SpvWord) RuntimeError!void {
-    if (std.mem.indexOfScalar(SpvWord, &self.mod.input_locations, result)) |_| {
-        try self.writeValue(T, input, &self.results[result].variant.?.Variable.value);
-    } else {
-        return RuntimeError.NotFound;
-    }
-}
-
 pub fn readDescriptorSet(self: *const Self, comptime T: type, output: *T, set: SpvWord, binding: SpvWord) RuntimeError!void {
     if (set < lib.SPIRV_MAX_SET and binding < lib.SPIRV_MAX_SET_BINDINGS) {
         try self.readValue(T, output, &self.results[self.mod.bindings[set][binding]].variant.?.Variable.value);
@@ -192,80 +176,94 @@ pub fn writeDescriptorSet(self: *const Self, comptime T: type, allocator: std.me
     }
 }
 
+pub fn readOutput(self: *const Self, comptime T: type, output: []T, result: SpvWord) RuntimeError!void {
+    if (std.mem.indexOf(SpvWord, &self.mod.output_locations, &.{result})) |_| {
+        try self.readValue(T, output, &self.results[result].variant.?.Variable.value);
+    } else {
+        return RuntimeError.NotFound;
+    }
+}
+
+pub fn writeInput(self: *const Self, comptime T: type, input: []const T, result: SpvWord) RuntimeError!void {
+    if (std.mem.indexOf(SpvWord, &self.mod.input_locations, &.{result})) |_| {
+        try self.writeValue(T, input, &self.results[result].variant.?.Variable.value);
+    } else {
+        return RuntimeError.NotFound;
+    }
+}
+
 fn reset(self: *Self) void {
     self.function_stack.clearRetainingCapacity();
     self.current_function = null;
 }
 
-fn readValue(self: *const Self, output: []u8, value: *const Result.Value) RuntimeError!void {
-    const type_word = try result.getValueTypeWord();
-    const value = try result.getValue();
-    const lane_bits = try Result.resolveLaneBitWidth((try self.results[type_word].getVariant()).Type, self);
-
+fn readValue(self: *const Self, comptime T: type, output: []T, value: *const Result.Value) RuntimeError!void {
     switch (value.*) {
-        .Bool => |b| output[0] = if (b == true) 1 else 0,
+        .Bool => |b| {
+            if (T == bool) {
+                output[0] = b;
+            } else {
+                return RuntimeError.InvalidValueType;
+            }
+        },
         .Int => |i| {
-            switch (lane_bits) {
-                8 => output[0] = @bitCast(i.uint8),
-                16 => std.mem.copyForward(u8, output[0..], std.mem.asBytes(i.uint16)),
-                32 => std.mem.copyForward(u8, output[0..], std.mem.asBytes(i.uint32)),
-                64 => std.mem.copyForward(u8, output[0..], std.mem.asBytes(i.uint64)),
+            switch (T) {
+                i8 => output[0] = i.sint8,
+                i16 => output[0] = i.sint16,
+                i32 => output[0] = i.sint32,
+                i64 => output[0] = i.sint64,
+                u8 => output[0] = i.uint8,
+                u16 => output[0] = i.uint16,
+                u32 => output[0] = i.uint32,
+                u64 => output[0] = i.uint64,
                 inline else => return RuntimeError.InvalidValueType,
             }
         },
         .Float => |f| {
-            switch (lane_bits) {
-                16 => std.mem.copyForward(u8, output[0..], std.mem.asBytes(f.float16)),
-                32 => std.mem.copyForward(u8, output[0..], std.mem.asBytes(f.float32)),
-                64 => std.mem.copyForward(u8, output[0..], std.mem.asBytes(f.float64)),
+            switch (T) {
+                f16 => output[0] = f.float16,
+                f32 => output[0] = f.float32,
+                f64 => output[0] = f.float64,
                 inline else => return RuntimeError.InvalidValueType,
             }
         },
-        .Vector4f32 => |vec| inline for (0..4) |i| switch (lane_bits) {
-            32 => std.mem.copyForward(u8, output[0..], std.mem.asBytes(vec[i])),
+        .Vector4f32 => |vec| inline for (0..4) |i| switch (T) {
+            f32 => output[i] = vec[i],
             inline else => return RuntimeError.InvalidValueType,
         },
-        .Vector3f32 => |vec| inline for (0..3) |i| switch (lane_bits) {
-            32 => std.mem.copyForward(u8, output[0..], std.mem.asBytes(vec[i])),
+        .Vector3f32 => |vec| inline for (0..3) |i| switch (T) {
+            f32 => output[i] = vec[i],
             inline else => return RuntimeError.InvalidValueType,
         },
-        .Vector2f32 => |vec| inline for (0..2) |i| switch (lane_bits) {
-            32 => std.mem.copyForward(u8, output[0..], std.mem.asBytes(vec[i])),
+        .Vector2f32 => |vec| inline for (0..2) |i| switch (T) {
+            f32 => output[i] = vec[i],
             inline else => return RuntimeError.InvalidValueType,
         },
-        .Vector4i32 => |vec| inline for (0..4) |i| switch (lane_bits) {
-            32 => std.mem.copyForward(u8, output[0..], std.mem.asBytes(vec[i])),
+        .Vector4i32 => |vec| inline for (0..4) |i| switch (T) {
+            i32 => output[i] = vec[i],
             inline else => return RuntimeError.InvalidValueType,
         },
-        .Vector3i32 => |vec| inline for (0..3) |i| switch (lane_bits) {
-            32 => std.mem.copyForward(u8, output[0..], std.mem.asBytes(vec[i])),
+        .Vector3i32 => |vec| inline for (0..3) |i| switch (T) {
+            i32 => output[i] = vec[i],
             inline else => return RuntimeError.InvalidValueType,
         },
-        .Vector2i32 => |vec| inline for (0..2) |i| switch (lane_bits) {
-            32 => std.mem.copyForward(u8, output[0..], std.mem.asBytes(vec[i])),
+        .Vector2i32 => |vec| inline for (0..2) |i| switch (T) {
+            i32 => output[i] = vec[i],
             inline else => return RuntimeError.InvalidValueType,
         },
-        .Vector4u32 => |vec| inline for (0..4) |i| switch (lane_bits) {
-            32 => std.mem.copyForward(u8, output[0..], std.mem.asBytes(vec[i])),
+        .Vector4u32 => |vec| inline for (0..4) |i| switch (T) {
+            u32 => output[i] = vec[i],
             inline else => return RuntimeError.InvalidValueType,
         },
-        .Vector3u32 => |vec| inline for (0..3) |i| switch (lane_bits) {
-            32 => std.mem.copyForward(u8, output[0..], std.mem.asBytes(vec[i])),
+        .Vector3u32 => |vec| inline for (0..3) |i| switch (T) {
+            u32 => output[i] = vec[i],
             inline else => return RuntimeError.InvalidValueType,
         },
-        .Vector2u32 => |vec| inline for (0..2) |i| switch (lane_bits) {
-            32 => std.mem.copyForward(u8, output[0..], std.mem.asBytes(vec[i])),
+        .Vector2u32 => |vec| inline for (0..2) |i| switch (T) {
+            u32 => output[i] = vec[i],
             inline else => return RuntimeError.InvalidValueType,
         },
-        .Array,
-        .Matrix,
-        .Structure,
-        .Vector,
-        => |values| for (values, 0..) |v, i| try self.readValue(T, output[i..], &v),
-        .RuntimeArray => |opt_values| if (opt_values) |values| {
-            for (values, 0..) |v, i|
-                try self.readValue(output[i..], result);
-        },
+        .Vector, .Matrix, .Array, .Structure => |values| for (values, 0..) |v, i| try self.readValue(T, output[i..], &v),
         else => return RuntimeError.InvalidValueType,
     }
 }
@@ -336,15 +334,7 @@ fn writeValue(self: *const Self, comptime T: type, input: []const T, value: *Res
             u32 => vec[i] = input[i],
             inline else => return RuntimeError.InvalidValueType,
         },
-        .Array,
-        .Matrix,
-        .Structure,
-        .Vector,
-        => |*values| for (values.*, 0..) |*v, i| try self.writeValue(T, input[i..], v),
-        .RuntimeArray => |opt_values| if (opt_values) |*values| {
-            for (values.*, 0..) |*v, i|
-                try self.writeValue(T, input[i..], v);
-        },
+        .Vector, .Matrix, .Array, .Structure => |*values| for (values.*, 0..) |*v, i| try self.writeValue(T, input[i..], v),
         else => return RuntimeError.InvalidValueType,
     }
 }
diff --git a/test/root.zig b/test/root.zig
index 784074d..8a12d25 100644
--- a/test/root.zig
+++ b/test/root.zig
@@ -50,6 +50,7 @@ pub const case = struct {
     pub fn expectOutputWithInput(comptime T: type, comptime len: usize, source: []const u32, output_name: []const u8, expected: []const T, input_name: []const u8, input: []const T) !void {
         const allocator = std.testing.allocator;
 
+        // To test with all important module options
         const module_options = [_]spv.Module.ModuleOptions{
             .{
                 .use_simd_vectors_specializations = true,