Fix front facing block

src/Materials/Node/Blocks/frontFacingBlock.ts

@@ -4,8 +4,6 @@ import { NodeMaterialBuildState } from '../nodeMaterialBuildState';
 import { NodeMaterialConnectionPoint } from '../nodeMaterialBlockConnectionPoint';
 import { NodeMaterialBlockTargets } from '../Enums/nodeMaterialBlockTargets';
 import { _TypeStore } from '../../../Misc/typeStore';
-import { NodeMaterial } from '../nodeMaterial';
-import { ViewDirectionBlock } from './viewDirectionBlock';
 /**
  * Block used to test if the fragment shader is front facing
  */
@@ -17,8 +15,6 @@ export class FrontFacingBlock extends NodeMaterialBlock {
     public constructor(name: string) {
         super(name, NodeMaterialBlockTargets.Fragment);
 
-        this.registerInput("worldNormal", NodeMaterialBlockConnectionPointTypes.Vector4, false, NodeMaterialBlockTargets.Fragment);
-        this.registerInput("viewDirection", NodeMaterialBlockConnectionPointTypes.Vector3, false, NodeMaterialBlockTargets.Fragment);
         this.registerOutput("output", NodeMaterialBlockConnectionPointTypes.Float, NodeMaterialBlockTargets.Fragment);
     }
 
@@ -31,40 +27,18 @@ export class FrontFacingBlock extends NodeMaterialBlock {
     }
 
     /**
-     * Gets the world normal component
-     */
-    public get worldNormal(): NodeMaterialConnectionPoint {
-        return this._inputs[0];
-    }
-
-    /**
-     * Gets the view direction input component
-     */
-    public get viewDirection(): NodeMaterialConnectionPoint {
-        return this._inputs[1];
-    }
-
-    /**
      * Gets the output component
      */
     public get output(): NodeMaterialConnectionPoint {
         return this._outputs[0];
     }
 
-    public autoConfigure(material: NodeMaterial) {
-        if (!this.viewDirection.isConnected) {
-            let viewDirectionInput = new ViewDirectionBlock("View direction");
-            viewDirectionInput.output.connectTo(this.viewDirection);
-            viewDirectionInput.autoConfigure(material);
-        }
-    }
-
     protected _buildBlock(state: NodeMaterialBuildState) {
         super._buildBlock(state);
 
         let output = this._outputs[0];
 
-        state.compilationString += this._declareOutput(output, state) + ` = max(0.0, sign(dot(${this.worldNormal.associatedVariableName}.xyz, ${this.viewDirection.associatedVariableName})));\r\n`;
+        state.compilationString += this._declareOutput(output, state) + ` = gl_FrontFacing ? 1.0 : 0.0;\r\n`;
 
         return this;
     }

src/Materials/Node/nodeMaterial.ts

@@ -1183,7 +1183,7 @@ export class NodeMaterial extends PushMaterial {
             let parsedBlock = source.blocks[blockIndex];
             let block = map[parsedBlock.id];
 
-            if (!block.isInput) {
+            if (block.inputs.length) {
                 continue;
             }
             this._restoreConnections(block, source, map);