diff --git a/build.zig.zon b/build.zig.zon
index 0230448..311fdb2 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -32,8 +32,8 @@
 
         // Soft dependencies
         .SPIRV_Interpreter = .{
-            .url = "git+https://github.com/Kbz-8/SPIRV-Interpreter#6fbd386ce40286ca9dcf21c994ccc46814fb9b94",
-            .hash = "SPIRV_Interpreter-0.0.1-ajmpn0N2CQDo-XU_Lf_Xt140wvHyoxBnzapYANEOgjdH",
+            .url = "git+https://github.com/Kbz-8/SPIRV-Interpreter#445bb93296bd6da4a74aa40152aaa779170887cf",
+            .hash = "SPIRV_Interpreter-0.0.1-ajmpn113CQDBhtMXf88no5gcMJhlricW5G_rWc7AvRS5",
             .lazy = true,
         },
         //.SPIRV_Interpreter = .{
diff --git a/src/software/device/fragment.zig b/src/software/device/fragment.zig
index 7c5b26e..85d764b 100644
--- a/src/software/device/fragment.zig
+++ b/src/software/device/fragment.zig
@@ -119,6 +119,10 @@ pub fn shaderInvocation(
 
     const entry = try rt.getEntryPointByName(shader.entry);
 
+    const processed_inputs = allocator.alloc(bool, rt.results.len) catch return SpvRuntimeError.OutOfMemory;
+    defer allocator.free(processed_inputs);
+    @memset(processed_inputs, false);
+
     for (0..spv.SPIRV_MAX_OUTPUT_LOCATIONS) |location| {
         for (0..4) |component| {
             var input = fragment_inputs[location][component];
@@ -134,6 +138,11 @@ pub fn shaderInvocation(
                 },
                 else => return err,
             };
+            if (result_word >= processed_inputs.len)
+                return SpvRuntimeError.InvalidSpirV;
+            if (processed_inputs[result_word])
+                continue;
+            processed_inputs[result_word] = true;
 
             const has_result_value = rt.results[result_word].variant != null;
             const memory_size = if (has_result_value)