Redesign of the frag part of unshadedNodes so it's more modular, and can be properly used as GLSL 1.5 shader.

Added a stress test for unshadedNodes.
Changed the name of the texture parameter to textureMap in TextureFetch shaderNode as it was conflicting with the texture function used to fetch a texel from a a texture in glsl 1.5

jme3-core/src/main/resources/Common/MatDefs/Misc/UnshadedNodes.j3md

@@ -1,35 +1,25 @@
 MaterialDef UnshadedNodes {
-
     MaterialParameters {
         Texture2D ColorMap
         Texture2D LightMap
         Color Color (Color) 
         Boolean VertexColor (UseVertexColor) 
         Boolean SeparateTexCoord
-
-        // Alpha threshold for fragment discarding
         Float AlphaDiscardThreshold (AlphaTestFallOff) 
-
-        // For hardware skinning
         Int NumberOfBones
         Matrix4Array BoneMatrices
-   
     }
-
     Technique {
-
         WorldParameters {
             WorldViewProjectionMatrix
-            //used for fog
             WorldViewMatrix
         }
-      
         VertexShaderNodes {
             ShaderNode GpuSkinning {
                 Definition : BasicGPUSkinning : Common/MatDefs/ShaderNodes/HardwareSkinning/HardwareSkinning.j3sn
                 Condition : NumberOfBones
                 InputMapping {
-                    modelPosition = Global.position;
+                    modelPosition = Global.position
                     boneMatrices = MatParam.BoneMatrices
                     boneWeight = Attr.inHWBoneWeight
                     boneIndex = Attr.inHWBoneIndex
@@ -53,20 +43,49 @@ MaterialDef UnshadedNodes {
             }
         }
         FragmentShaderNodes {
-            ShaderNode UnshadedFrag{
+            ShaderNode MatColorMult {
-                Definition: Unshaded : Common/MatDefs/ShaderNodes/Common/Unshaded.j3sn
+                Definition : ColorMult : Common/MatDefs/ShaderNodes/Basic/ColorMult.j3sn
-                InputMapping{
+                InputMappings {
-                    texCoord = UnshadedVert.texCoord1: ColorMap
+                    color1 = MatParam.Color
-                    vertColor = UnshadedVert.vertColor: VertexColor
+                    color2 = Global.outColor
-                    matColor = MatParam.Color: Color
-                    colorMap = MatParam.ColorMap: ColorMap
-                    color = Global.outColor
                 }
-                OutputMapping{
+                OutputMappings {
-                    Global.outColor = color
+                    Global.outColor = outColor
+                }
+                Condition : Color
+            }
+            ShaderNode VertColorMult {
+                Definition : ColorMult : Common/MatDefs/ShaderNodes/Basic/ColorMult.j3sn
+                InputMappings {
+                    color1 = UnshadedVert.vertColor
+                    color2 = Global.outColor
+                }
+                OutputMappings {
+                    Global.outColor = outColor
+                }
+                Condition : VertexColor
+            }
+            ShaderNode ColorMapTF {
+                Definition : TextureFetch : Common/MatDefs/ShaderNodes/Basic/TextureFetch.j3sn
+                InputMappings {
+                    texCoord = UnshadedVert.texCoord1
+                    textureMap = MatParam.ColorMap
+                }
+                OutputMappings {
+                }
+                Condition : ColorMap
+            }
+            ShaderNode ColorMapMult {
+                Definition : ColorMult : Common/MatDefs/ShaderNodes/Basic/ColorMult.j3sn
+                InputMappings {
+                    color1 = ColorMapTF.outColor
+                    color2 = Global.outColor
+                }
+                OutputMappings {
+                    Global.outColor = outColor
                 }
+                Condition : ColorMap
             }
-
             ShaderNode AlphaDiscardThreshold {
                 Definition : AlphaDiscard : Common/MatDefs/ShaderNodes/Basic/AlphaDiscard.j3sn
                 Condition : AlphaDiscardThreshold
@@ -75,23 +94,28 @@ MaterialDef UnshadedNodes {
                     threshold = MatParam.AlphaDiscardThreshold
                 }
             }
-            ShaderNode LightMap{
+            ShaderNode LightMapTF {
-                Definition: LightMapping : Common/MatDefs/ShaderNodes/LightMapping/LightMapping.j3sn
+                Definition : TextureFetch : Common/MatDefs/ShaderNodes/Basic/TextureFetch.j3sn
-                Condition: LightMap
+                InputMappings {
-                InputMapping{
+                    textureMap = MatParam.LightMap
-                    texCoord = UnshadedVert.texCoord1: !SeparateTexCoord  
                     texCoord = UnshadedVert.texCoord2 : SeparateTexCoord
-                    lightMap = MatParam.LightMap   
+                    texCoord = UnshadedVert.texCoord1 : !SeparateTexCoord
-                    color = Global.outColor  
                 }
-                OutputMapping{
+                OutputMappings {
-                    Global.outColor = color
                 }
+                Condition : LightMap
+            }
+            ShaderNode LightMapMult {
+                Definition : ColorMult : Common/MatDefs/ShaderNodes/Basic/ColorMult.j3sn
+                OutputMappings {
+                    Global.outColor = outColor
+                }
+                InputMappings {
+                    color1 = LightMapTF.outColor
+                    color2 = Global.outColor
+                }
+                Condition : LightMap
             }
-                      
         }
-
     }
-
-   
 }

jme3-core/src/main/resources/Common/MatDefs/ShaderNodes/Basic/TextureFetch.j3sn

@@ -5,12 +5,12 @@ ShaderNodeDefinitions{
 		Shader GLSL150: Common/MatDefs/ShaderNodes/Basic/texture15.frag
         Documentation{
             Fetches a color value in the given texture acording to given texture coordinates
-            @input texture the texture to read
+            @input textureMap the texture to read
             @input texCoord the texture coordinates
             @output outColor the fetched color
         }
         Input {
-            sampler2D texture
+            sampler2D textureMap
             vec2 texCoord            
         }
         Output {

jme3-core/src/main/resources/Common/MatDefs/ShaderNodes/Basic/texture.frag

@@ -1,3 +1,3 @@
 void main(){
-    outColor = texture2D(texture,texCoord);
+    outColor = texture2D(textureMap,texCoord);
 }

jme3-core/src/main/resources/Common/MatDefs/ShaderNodes/Basic/texture15.frag

@@ -1,3 +1,3 @@
 void main(){
-    outColor = texture(texture,texCoord);
+    outColor = texture(textureMap,texCoord);
 }

jme3-examples/src/main/java/jme3test/stress/TestShaderNodesStress.java

@@ -0,0 +1,102 @@
+package jme3test.stress;
+
+import com.jme3.app.BasicProfilerState;
+import com.jme3.app.SimpleApplication;
+import com.jme3.material.Material;
+import com.jme3.math.ColorRGBA;
+import com.jme3.math.Quaternion;
+import com.jme3.math.Vector3f;
+import com.jme3.profile.AppProfiler;
+import com.jme3.profile.AppStep;
+import com.jme3.profile.VpStep;
+import com.jme3.renderer.ViewPort;
+import com.jme3.renderer.queue.RenderQueue;
+import com.jme3.scene.Geometry;
+import com.jme3.scene.shape.Quad;
+import com.jme3.texture.Texture;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+public class TestShaderNodesStress extends SimpleApplication {
+
+    public static void main(String[] args) {
+        TestShaderNodesStress app = new TestShaderNodesStress();
+        app.start();
+    }
+
+    @Override
+    public void simpleInitApp() {
+
+        Quad q = new Quad(1, 1);
+        Geometry g = new Geometry("quad", q);
+        g.setLocalTranslation(-500, -500, 0);
+        g.setLocalScale(1000);
+
+        rootNode.attachChild(g);
+        cam.setLocation(new Vector3f(0.0f, 0.0f, 0.40647888f));
+        cam.setRotation(new Quaternion(0.0f, 1.0f, 0.0f, 0.0f));
+
+        Texture tex = assetManager.loadTexture("Interface/Logo/Monkey.jpg");
+
+        Material mat = new Material(assetManager, "Common/MatDefs/Misc/UnshadedNodes.j3md");
+      //Material mat = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
+
+        mat.setColor("Color", ColorRGBA.Yellow);
+        mat.setTexture("ColorMap", tex);
+        g.setMaterial(mat);
+        //place the geoms in the transparent bucket so that they are rendered back to front for maximum overdraw
+        g.setQueueBucket(RenderQueue.Bucket.Transparent);
+
+        for (int i = 0; i < 1000; i++) {
+            Geometry cl = g.clone(false);
+            cl.move(0, 0, -(i + 1));
+            rootNode.attachChild(cl);
+        }
+
+        flyCam.setMoveSpeed(20);
+        Logger.getLogger("com.jme3").setLevel(Level.WARNING);
+
+        this.setAppProfiler(new Profiler());
+
+    }
+
+    private class Profiler implements AppProfiler {
+
+        private long startTime;
+        private long updateTime;
+        private long renderTime;
+        private long sum;
+        private int nbFrames;
+
+        @Override
+        public void appStep(AppStep step) {
+
+            switch (step) {
+                case BeginFrame:
+                    startTime = System.nanoTime();
+                    break;
+                case RenderFrame:
+                    updateTime = System.nanoTime();
+                    //   System.err.println("Update time : " + (updateTime - startTime));
+                    break;
+                case EndFrame:
+                    nbFrames++;
+                    if (nbFrames >= 150) {
+                        renderTime = System.nanoTime();
+                        sum += renderTime - updateTime;
+                        System.err.println("render time : " + (renderTime - updateTime));
+                        System.err.println("Average render time : " + ((float)sum / (float)(nbFrames-150)));
+                    }
+                    break;
+
+            }
+
+        }
+
+        @Override
+        public void vpStep(VpStep step, ViewPort vp, RenderQueue.Bucket bucket) {
+
+        }
+
+    }
+}