diff --git a/FinModelUtility/Fin/Fin/src/language/equations/fixedFunction/FixedFunctionEquationsGlslPrinter.cs b/FinModelUtility/Fin/Fin/src/language/equations/fixedFunction/FixedFunctionEquationsGlslPrinter.cs
index c3ece001e..b7a61e0bb 100644
--- a/FinModelUtility/Fin/Fin/src/language/equations/fixedFunction/FixedFunctionEquationsGlslPrinter.cs
+++ b/FinModelUtility/Fin/Fin/src/language/equations/fixedFunction/FixedFunctionEquationsGlslPrinter.cs
@@ -141,7 +141,7 @@ public void Print(
     for (var i = 0; i < usedColors.Length; ++i) {
       if (usedColors[i]) {
         AppendLineBetweenUniformsAndIns();
-        sb.AppendLine($"in vec4 vertexColor{i};");
+        sb.AppendLine($"in vec4 {GlslConstants.IN_VERTEX_COLOR_NAME}{i};");
       }
     }
 
@@ -149,7 +149,7 @@ public void Print(
     for (var i = 0; i < usedUvs.Length; ++i) {
       if (usedUvs[i]) {
         AppendLineBetweenUniformsAndIns();
-        sb.AppendLine($"in vec2 uv{i};");
+        sb.AppendLine($"in vec2 {GlslConstants.IN_UV_NAME}{i};");
       }
     }
 
@@ -568,8 +568,8 @@ private string GetScalarIdentifiedValue_(
 
         FixedFunctionSource.LIGHT_AMBIENT_ALPHA => "ambientLightColor.a",
 
-        FixedFunctionSource.VERTEX_ALPHA_0 => "vertexColor0.a",
-        FixedFunctionSource.VERTEX_ALPHA_1 => "vertexColor1.a",
+        FixedFunctionSource.VERTEX_ALPHA_0 => $"{GlslConstants.IN_VERTEX_COLOR_NAME}0.a",
+        FixedFunctionSource.VERTEX_ALPHA_1 => $"{GlslConstants.IN_VERTEX_COLOR_NAME}1.a",
 
         FixedFunctionSource.UNDEFINED => "1",
         _                             => throw new ArgumentOutOfRangeException()
@@ -799,11 +799,11 @@ private string GetColorNamedValue_(
         FixedFunctionSource.LIGHT_AMBIENT_COLOR => "ambientLightColor.rgb",
         FixedFunctionSource.LIGHT_AMBIENT_ALPHA => "ambientLightColor.aaa",
 
-        FixedFunctionSource.VERTEX_COLOR_0 => "vertexColor0.rgb",
-        FixedFunctionSource.VERTEX_COLOR_1 => "vertexColor1.rgb",
+        FixedFunctionSource.VERTEX_COLOR_0 => $"{GlslConstants.IN_VERTEX_COLOR_NAME}0.rgb",
+        FixedFunctionSource.VERTEX_COLOR_1 => $"{GlslConstants.IN_VERTEX_COLOR_NAME}1.rgb",
 
-        FixedFunctionSource.VERTEX_ALPHA_0 => "vertexColor0.aaa",
-        FixedFunctionSource.VERTEX_ALPHA_1 => "vertexColor1.aaa",
+        FixedFunctionSource.VERTEX_ALPHA_0 => $"{GlslConstants.IN_VERTEX_COLOR_NAME}0.aaa",
+        FixedFunctionSource.VERTEX_ALPHA_1 => $"{GlslConstants.IN_VERTEX_COLOR_NAME}1.aaa",
 
         FixedFunctionSource.UNDEFINED => "vec3(1)",
         _                             => throw new ArgumentOutOfRangeException()
@@ -825,7 +825,7 @@ private string GetTextureValue_(int textureIndex,
     return texture.UvType switch {
         UvType.STANDARD
             => GlslUtil.ReadColorFromTexture(textureName,
-                                             $"uv{texture.UvIndex}",
+                                             $"{GlslConstants.IN_UV_NAME}{texture.UvIndex}",
                                              texture,
                                              this.animations_),
         UvType.SPHERICAL
diff --git a/FinModelUtility/Fin/Fin/src/shaders/glsl/ShaderRequirements.cs b/FinModelUtility/Fin/Fin/src/shaders/glsl/ShaderRequirements.cs
index 3d403d508..d8ba30a2b 100644
--- a/FinModelUtility/Fin/Fin/src/shaders/glsl/ShaderRequirements.cs
+++ b/FinModelUtility/Fin/Fin/src/shaders/glsl/ShaderRequirements.cs
@@ -42,6 +42,12 @@ or IStandardMaterial
         break;
       }
       case IFixedFunctionMaterial fixedFunctionMaterial: {
+        foreach (var texture in fixedFunctionMaterial.TextureSources) {
+          if (texture != null) {
+            this.UsedUvs[texture.UvIndex] = true;
+          }
+        }
+
         var equations = fixedFunctionMaterial.Equations;
         for (var i = 0; i < this.UsedColors.Length; ++i) {
           this.UsedColors[i] = equations.DoOutputsDependOn([
diff --git a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Bonus/output/c1ttrk_c1ttrk.fragment.glsl b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Bonus/output/c1ttrk_c1ttrk.fragment.glsl
index b0fae5ad3..79f6c3d41 100644
--- a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Bonus/output/c1ttrk_c1ttrk.fragment.glsl	
+++ b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Bonus/output/c1ttrk_c1ttrk.fragment.glsl	
@@ -5,6 +5,7 @@ uniform sampler2D texture1;
 
 in vec4 vertexColor0;
 in vec2 uv0;
+in vec2 uv1;
 
 out vec4 fragColor;
 
diff --git a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Bonus/output/c1ttrk_c1ttrk.vertex.glsl b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Bonus/output/c1ttrk_c1ttrk.vertex.glsl
index efb9639ae..599dad1d3 100644
--- a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Bonus/output/c1ttrk_c1ttrk.vertex.glsl	
+++ b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Bonus/output/c1ttrk_c1ttrk.vertex.glsl	
@@ -21,6 +21,7 @@ out vec3 vertexNormal;
 out vec3 tangent;
 out vec3 binormal;
 out vec2 uv0;
+out vec2 uv1;
 out vec4 vertexColor0;
 
 void main() {
@@ -29,5 +30,6 @@ void main() {
   tangent = normalize(modelMatrix * vec4(in_Tangent)).xyz;
   binormal = cross(vertexNormal, tangent);
   uv0 = in_Uvs[0];
+  uv1 = in_Uvs[1];
   vertexColor0 = in_Colors[0];
 }
diff --git a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttdrt_c1ttdrt.fragment.glsl b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttdrt_c1ttdrt.fragment.glsl
index b0fae5ad3..79f6c3d41 100644
--- a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttdrt_c1ttdrt.fragment.glsl	
+++ b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttdrt_c1ttdrt.fragment.glsl	
@@ -5,6 +5,7 @@ uniform sampler2D texture1;
 
 in vec4 vertexColor0;
 in vec2 uv0;
+in vec2 uv1;
 
 out vec4 fragColor;
 
diff --git a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttdrt_c1ttdrt.vertex.glsl b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttdrt_c1ttdrt.vertex.glsl
index efb9639ae..599dad1d3 100644
--- a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttdrt_c1ttdrt.vertex.glsl	
+++ b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttdrt_c1ttdrt.vertex.glsl	
@@ -21,6 +21,7 @@ out vec3 vertexNormal;
 out vec3 tangent;
 out vec3 binormal;
 out vec2 uv0;
+out vec2 uv1;
 out vec4 vertexColor0;
 
 void main() {
@@ -29,5 +30,6 @@ void main() {
   tangent = normalize(modelMatrix * vec4(in_Tangent)).xyz;
   binormal = cross(vertexNormal, tangent);
   uv0 = in_Uvs[0];
+  uv1 = in_Uvs[1];
   vertexColor0 = in_Colors[0];
 }
diff --git a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttdrtgra02_c1ttdrtgra02.fragment.glsl b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttdrtgra02_c1ttdrtgra02.fragment.glsl
index b0fae5ad3..79f6c3d41 100644
--- a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttdrtgra02_c1ttdrtgra02.fragment.glsl	
+++ b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttdrtgra02_c1ttdrtgra02.fragment.glsl	
@@ -5,6 +5,7 @@ uniform sampler2D texture1;
 
 in vec4 vertexColor0;
 in vec2 uv0;
+in vec2 uv1;
 
 out vec4 fragColor;
 
diff --git a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttdrtgra02_c1ttdrtgra02.vertex.glsl b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttdrtgra02_c1ttdrtgra02.vertex.glsl
index efb9639ae..599dad1d3 100644
--- a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttdrtgra02_c1ttdrtgra02.vertex.glsl	
+++ b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttdrtgra02_c1ttdrtgra02.vertex.glsl	
@@ -21,6 +21,7 @@ out vec3 vertexNormal;
 out vec3 tangent;
 out vec3 binormal;
 out vec2 uv0;
+out vec2 uv1;
 out vec4 vertexColor0;
 
 void main() {
@@ -29,5 +30,6 @@ void main() {
   tangent = normalize(modelMatrix * vec4(in_Tangent)).xyz;
   binormal = cross(vertexNormal, tangent);
   uv0 = in_Uvs[0];
+  uv1 = in_Uvs[1];
   vertexColor0 = in_Colors[0];
 }
diff --git a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttgrav1_c1ttgrav1.fragment.glsl b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttgrav1_c1ttgrav1.fragment.glsl
index b0fae5ad3..79f6c3d41 100644
--- a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttgrav1_c1ttgrav1.fragment.glsl	
+++ b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttgrav1_c1ttgrav1.fragment.glsl	
@@ -5,6 +5,7 @@ uniform sampler2D texture1;
 
 in vec4 vertexColor0;
 in vec2 uv0;
+in vec2 uv1;
 
 out vec4 fragColor;
 
diff --git a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttgrav1_c1ttgrav1.vertex.glsl b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttgrav1_c1ttgrav1.vertex.glsl
index efb9639ae..599dad1d3 100644
--- a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttgrav1_c1ttgrav1.vertex.glsl	
+++ b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttgrav1_c1ttgrav1.vertex.glsl	
@@ -21,6 +21,7 @@ out vec3 vertexNormal;
 out vec3 tangent;
 out vec3 binormal;
 out vec2 uv0;
+out vec2 uv1;
 out vec4 vertexColor0;
 
 void main() {
@@ -29,5 +30,6 @@ void main() {
   tangent = normalize(modelMatrix * vec4(in_Tangent)).xyz;
   binormal = cross(vertexNormal, tangent);
   uv0 = in_Uvs[0];
+  uv1 = in_Uvs[1];
   vertexColor0 = in_Colors[0];
 }
diff --git a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttrk_c1ttrk.fragment.glsl b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttrk_c1ttrk.fragment.glsl
index b0fae5ad3..79f6c3d41 100644
--- a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttrk_c1ttrk.fragment.glsl	
+++ b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttrk_c1ttrk.fragment.glsl	
@@ -5,6 +5,7 @@ uniform sampler2D texture1;
 
 in vec4 vertexColor0;
 in vec2 uv0;
+in vec2 uv1;
 
 out vec4 fragColor;
 
diff --git a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttrk_c1ttrk.vertex.glsl b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttrk_c1ttrk.vertex.glsl
index efb9639ae..599dad1d3 100644
--- a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttrk_c1ttrk.vertex.glsl	
+++ b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_1/C1_Gauntlet/output/c1ttrk_c1ttrk.vertex.glsl	
@@ -21,6 +21,7 @@ out vec3 vertexNormal;
 out vec3 tangent;
 out vec3 binormal;
 out vec2 uv0;
+out vec2 uv1;
 out vec4 vertexColor0;
 
 void main() {
@@ -29,5 +30,6 @@ void main() {
   tangent = normalize(modelMatrix * vec4(in_Tangent)).xyz;
   binormal = cross(vertexNormal, tangent);
   uv0 = in_Uvs[0];
+  uv1 = in_Uvs[1];
   vertexColor0 = in_Colors[0];
 }
diff --git a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_2/MP1_L/output/c4ttboringmud_c4ttboringmud.fragment.glsl b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_2/MP1_L/output/c4ttboringmud_c4ttboringmud.fragment.glsl
index b0fae5ad3..79f6c3d41 100644
--- a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_2/MP1_L/output/c4ttboringmud_c4ttboringmud.fragment.glsl	
+++ b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_2/MP1_L/output/c4ttboringmud_c4ttboringmud.fragment.glsl	
@@ -5,6 +5,7 @@ uniform sampler2D texture1;
 
 in vec4 vertexColor0;
 in vec2 uv0;
+in vec2 uv1;
 
 out vec4 fragColor;
 
diff --git a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_2/MP1_L/output/c4ttboringmud_c4ttboringmud.vertex.glsl b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_2/MP1_L/output/c4ttboringmud_c4ttboringmud.vertex.glsl
index efb9639ae..599dad1d3 100644
--- a/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_2/MP1_L/output/c4ttboringmud_c4ttboringmud.vertex.glsl	
+++ b/FinModelUtility/Formats/Modl/Modl Tests/goldens/out/battalion_wars_2/MP1_L/output/c4ttboringmud_c4ttboringmud.vertex.glsl	
@@ -21,6 +21,7 @@ out vec3 vertexNormal;
 out vec3 tangent;
 out vec3 binormal;
 out vec2 uv0;
+out vec2 uv1;
 out vec4 vertexColor0;
 
 void main() {
@@ -29,5 +30,6 @@ void main() {
   tangent = normalize(modelMatrix * vec4(in_Tangent)).xyz;
   binormal = cross(vertexNormal, tangent);
   uv0 = in_Uvs[0];
+  uv1 = in_Uvs[1];
   vertexColor0 = in_Colors[0];
 }