2 files changed, 15 insertions, 5 deletions

diff --git a/src/shader_recompiler/frontend/ir/attribute.cpp b/src/shader_recompiler/frontend/ir/attribute.cpp
index dc2bec06d..5b3694f65 100644
--- a/src/shader_recompiler/frontend/ir/attribute.cpp
+++ b/src/shader_recompiler/frontend/ir/attribute.cpp
@@ -9,11 +9,21 @@
 
 namespace Shader::IR {
 
-u32 TxtCoordAttributeIndex(Attribute attribute) {
+bool IsFixedFncTexture(Attribute attribute) {
+    return attribute >= Attribute::FixedFncTexture0S && attribute <= Attribute::FixedFncTexture9Q;
+}
+
+u32 FixedFncTextureAttributeIndex(Attribute attribute) {
+    if (!IsFixedFncTexture(attribute)) {
+        throw InvalidArgument("Attribute is not fixedfnctexture {}", attribute);
+    }
     return (static_cast<u32>(attribute) - static_cast<u32>(Attribute::FixedFncTexture0S)) / 4u;
 }
 
-u32 TxtCoordAttributeElement(Attribute attribute) {
+u32 FixedFncTextureAttributeElement(Attribute attribute) {
+    if (!IsFixedFncTexture(attribute)) {
+        throw InvalidArgument("Attribute is not fixedfnctexture {}", attribute);
+    }
     return static_cast<u32>(attribute) % 4;
 }
 
diff --git a/src/shader_recompiler/frontend/ir/attribute.h b/src/shader_recompiler/frontend/ir/attribute.h
index 6957fb43b..3f07fd7ac 100644
--- a/src/shader_recompiler/frontend/ir/attribute.h
+++ b/src/shader_recompiler/frontend/ir/attribute.h
@@ -222,12 +222,12 @@ enum class Attribute : u64 {
     FrontFace = 255,
 };
 
-constexpr size_t NUM_TXT_COORD = 10;
+constexpr size_t NUM_FIXEDFNCTEXTURE = 10;
 constexpr size_t NUM_GENERICS = 32;
 
-[[nodiscard]] u32 TxtCoordAttributeIndex(Attribute attribute);
+[[nodiscard]] u32 FixedFncTextureAttributeIndex(Attribute attribute);
 
-[[nodiscard]] u32 TxtCoordAttributeElement(Attribute attribute);
+[[nodiscard]] u32 FixedFncTextureAttributeElement(Attribute attribute);
 
 [[nodiscard]] bool IsGeneric(Attribute attribute) noexcept;