Fix object and world position affine check

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Util/ShaderGenerator.cs

             }
         }
 
-        public static string EmitTransform(TransformDesc[] matrices, TransformDesc[] invMatrices, string variable, bool isAffine, bool inverseTranspose)
+        public static string EmitTransform(TransformDesc[] matrices, TransformDesc[] invMatrices, string variable, bool isAffine, bool noMatrixCast, bool inverseTranspose)
         {
             if (inverseTranspose)
                 matrices = invMatrices;
             foreach (var m in matrices)
             {
                 var matrix = m.name;
-                if (!isAffine)
+                if (!isAffine && !noMatrixCast)
                 {
                     matrix = "(float3x3)" + matrix;
                 }
             // Ensure that the transform graph is initialized
             InitTransforms();
             bool isNormal = false;
-            bool affine = (inputType == InputType.Position);
+            bool affine = (inputType == InputType.Position && to != CoordinateSpace.World);
+            bool noMatrixCast = (inputType == InputType.Position && to == CoordinateSpace.World);
             if (inputType == InputType.Normal)
             {
                 inputType = InputType.Vector;
                 variable = EmitTransform(
                         GetTransformPath(CoordinateSpace.Tangent, tangentMatrixSpace),
                         GetTransformPath(tangentMatrixSpace, CoordinateSpace.Tangent),
-                        variable, affine, !isNormal);
+                        variable, affine, noMatrixCast, !isNormal);
-            return EmitTransform(GetTransformPath(from, to), GetTransformPath(to, from), variable, affine, isNormal);
+            return EmitTransform(GetTransformPath(from, to), GetTransformPath(to, from), variable, affine, noMatrixCast, isNormal);
         }
 
         public static void GenerateSpaceTranslationSurfaceInputs(
             {
                 var name = preferedCoordinateSpace.ToVariableName(InterpolatorType.Position);
                 interpolators.AddShaderChunk(string.Format("float3 {0} : TEXCOORD{1};", name, interpolatorIndex), false);
-                vertexShader.AddShaderChunk(string.Format("o.{0} = {1};", name, ConvertBetweenSpace("v.vertex", CoordinateSpace.Object, preferedCoordinateSpace, InputType.Vector)), false);
+                vertexShader.AddShaderChunk(string.Format("o.{0} = {1};", name, ConvertBetweenSpace("v.vertex", CoordinateSpace.Object, preferedCoordinateSpace, InputType.Position)), false);
                 pixelShader.AddShaderChunk(string.Format("float3 {0} = IN.{0};", name), false);
                 interpolatorIndex++;
             }