Applying the patch from Kai Rohmer.

Author: ld-kerley

source/MaterialXGenMdl/mdl/materialx/noise.mdl

@@ -463,7 +463,7 @@ export float3 mx_cell_noise_float3(float4 mxp_p)
 }
 
 export float mx_fractal2d_noise_float(
-  float2 mxp_p = core::mx_swizzle_xy( ::state::texture_coordinate(0)))
+  float2 mxp_p = core::mx_swizzle_xy( ::state::texture_coordinate(0)),
   int mxp_octaves = 3, 
   float mxp_lacunarity = 2.0, 
   float mxp_diminish= 0.5)
@@ -483,7 +483,7 @@ export float mx_fractal2d_noise_float(
 }
 
 export float3 mx_fractal2d_noise_float3(
-  float2 mxp_p = core::mx_swizzle_xy( ::state::texture_coordinate(0)))
+  float2 mxp_p = core::mx_swizzle_xy( ::state::texture_coordinate(0)),
   int mxp_octaves = 3,
   float mxp_lacunarity = 2.0,
   float mxp_diminish= 0.5)
@@ -503,7 +503,7 @@ export float3 mx_fractal2d_noise_float3(
 }
 
 export float2 mx_fractal2d_noise_float2(
-  float2 mxp_p = core::mx_swizzle_xy( ::state::texture_coordinate(0)))
+  float2 mxp_p = core::mx_swizzle_xy( ::state::texture_coordinate(0)),
   int mxp_octaves = 3,
   float mxp_lacunarity = 2.0,
   float mxp_diminish= 0.5)
@@ -516,7 +516,7 @@ export float2 mx_fractal2d_noise_float2(
 }
 
 export float4 mx_fractal2d_noise_float4(
-  float2 mxp_p = core::mx_swizzle_xy( ::state::texture_coordinate(0)))
+  float2 mxp_p = core::mx_swizzle_xy( ::state::texture_coordinate(0)),
   int mxp_octaves = 3,
   float mxp_lacunarity = 2.0,
   float mxp_diminish= 0.5)

source/MaterialXGenMdl/mdl/materialx/stdlib_1_8.mdl

@@ -310,6 +310,10 @@ export using .::stdlib_1_7 import mx_noise3d_float;
 export using .::stdlib_1_7 import mx_noise3d_float2;
 export using .::stdlib_1_7 import mx_noise3d_float3;
 export using .::stdlib_1_7 import mx_noise3d_float4;
+export using .::stdlib_1_7 import mx_fractal2d_float;
+export using .::stdlib_1_7 import mx_fractal2d_float2;
+export using .::stdlib_1_7 import mx_fractal2d_float3;
+export using .::stdlib_1_7 import mx_fractal2d_float4;
 export using .::stdlib_1_7 import mx_fractal3d_float;
 export using .::stdlib_1_7 import mx_fractal3d_float2;
 export using .::stdlib_1_7 import mx_fractal3d_float3;

source/MaterialXGenMdl/mdl/materialx/stdlib_1_9.mdl

@@ -310,6 +310,10 @@ export using .::stdlib_1_7 import mx_noise3d_float;
 export using .::stdlib_1_7 import mx_noise3d_float2;
 export using .::stdlib_1_7 import mx_noise3d_float3;
 export using .::stdlib_1_7 import mx_noise3d_float4;
+export using .::stdlib_1_7 import mx_fractal2d_float;
+export using .::stdlib_1_7 import mx_fractal2d_float2;
+export using .::stdlib_1_7 import mx_fractal2d_float3;
+export using .::stdlib_1_7 import mx_fractal2d_float4;
 export using .::stdlib_1_7 import mx_fractal3d_float;
 export using .::stdlib_1_7 import mx_fractal3d_float2;
 export using .::stdlib_1_7 import mx_fractal3d_float3;