diff --git a/reshade/shaders/LUT/LUT.slang b/reshade/shaders/LUT/LUT.slang
index 31cb7dc..ee78815 100755
--- a/reshade/shaders/LUT/LUT.slang
+++ b/reshade/shaders/LUT/LUT.slang
@@ -9,7 +9,7 @@ layout(push_constant) uniform Push
 	float LUT_Size;
 } params;
 
-#pragma parameter LUT_Size "LUT Size" 16.0 16.0 64.0 1.0
+#pragma parameter LUT_Size "LUT Size" 16.0 1.0 64.0 1.0
 
 layout(std140, set = 0, binding = 0) uniform UBO
 {
@@ -33,15 +33,23 @@ layout(location = 0) out vec4 FragColor;
 layout(set = 0, binding = 2) uniform sampler2D Source;
 layout(set = 0, binding = 3) uniform sampler2D SamplerLUT;
 
+// This shouldn't be necessary but it seems some undefined values can
+// creep in and each GPU vendor handles that differently. This keeps
+// all values within a safe range
+vec4 mixfix(vec4 a, vec4 b, float c)
+{
+	return (a.z < 1.0) ? mix(a, b, c) : a;
+}
+
 void main()
 {
 	vec4 imgColor = texture(Source, vTexCoord.xy);
-    float red = ( imgColor.r * (params.LUT_Size - 1.0) + 0.5 ) / (params.LUT_Size * params.LUT_Size);
-    float green = ( imgColor.g * (params.LUT_Size - 1.0) + 0.5 ) / params.LUT_Size;
-    float blue1 = floor( imgColor.b  * (params.LUT_Size - 1.0) ) / params.LUT_Size;
+	float red = ( imgColor.r * (params.LUT_Size - 1.0) + 0.5 ) / (params.LUT_Size * params.LUT_Size);
+	float green = ( imgColor.g * (params.LUT_Size - 1.0) + 0.5 ) / params.LUT_Size;
+	float blue1 = floor( imgColor.b  * (params.LUT_Size - 1.0) ) / params.LUT_Size;
 	float blue2 = ceil( imgColor.b  * (params.LUT_Size - 1.0) ) / params.LUT_Size;
 	float mixer = (imgColor.b - (blue1 + red)) / ((blue2 + red) - (blue1 + red));
-    vec4 color1 = texture( SamplerLUT, vec2( blue1 + red, green ));
+	vec4 color1 = texture( SamplerLUT, vec2( blue1 + red, green ));
 	vec4 color2 = texture( SamplerLUT, vec2( blue2 + red, green ));
-   FragColor = mix(color1, color2, mixer);
+	FragColor = mixfix(color1, color2, mixer);
 }