diff --git a/samples/resources/lowPoly/data/basicPalette.frag b/samples/resources/lowPoly/data/basicPalette.frag
index a5fe9f5..3cd9d62 100644
--- a/samples/resources/lowPoly/data/basicPalette.frag
+++ b/samples/resources/lowPoly/data/basicPalette.frag
@@ -5,14 +5,83 @@ precision mediump float;
 precision mediump int;
 #endif
 
-in vec2 io_textureCoords;
+struct Light {
+    vec3 color;
+    vec3 position;
+    vec3 attenuation;
+};
 
+
+const int MAX_LIGHT_NUMBER = 8;
+
+
+in vec2 io_textureCoords;
+in vec3 io_surfaceNormal;
+in vec3 io_toCameraVector;
+in vec3 io_toLightVector[MAX_LIGHT_NUMBER];
+// FOW: Fog Of War result calculation
+in float io_fowVisibility;
+
+// texture properties
 uniform sampler2D in_textureBase;
+// Material
+//uniform Material in_material;
+// 2 light for suns and other for locals ...
+uniform Light in_lights[MAX_LIGHT_NUMBER];
+// global color of the sky ... needed to have a better color for the FOW
+//uniform vec3 in_sky_color;
+const vec3 in_sky_color = vec3(1.0,1.0,1.0);
 
 // output:
 out vec4 out_Color;
 
 void main(void) {
-	out_Color = texture(in_textureBase, io_textureCoords);
-	//out_Color = vec4(1,0,0,1);
+	// disable transparency elements in the texture ...
+	// Can be set at the start of the shader ...
+	/*
+	vec4 textureColour = texture(in_textureBase, io_textureCoords);
+	if (textureColour.a < 0.5) {
+		discard;
+	}
+	*/
+	//vec4 textureColour = vec4(1.0,1.0,1.0,1.0);
+	// keep material:
+    vec3 tex_ambientFactor = texture(in_textureBase, vec2(io_textureCoords.x, 4.5/8.0)).xyz;
+    //vec3 tex_diffuseFactor = texture(in_textureBase, vec2(io_textureCoords.x, 0.5/8.0)).xyz;
+    //vec4 textureColour = texture(in_textureBase, vec2(io_textureCoords.x, 0.5/8.0));
+    vec4 textureColour = texture(in_textureBase, io_textureCoords);
+    vec3 tex_specularFactor = texture(in_textureBase, vec2(io_textureCoords.x, 2.5/8.0)).xyz;
+    float tex_shininess = texture(in_textureBase, vec2(io_textureCoords.x, 6.5/8.0)).x;
+
+	vec3 unitNormal = normalize(io_surfaceNormal);
+	vec3 unitVectorToCamera = normalize(io_toCameraVector);
+	vec3 totalDiffuse = vec3(0.0);
+	vec3 totalSpecular = vec3(0.0);
+	for(int iii=0; iii<MAX_LIGHT_NUMBER; iii++) {
+		float distance = length(io_toLightVector[iii]);
+		float attenuationFactor = in_lights[iii].attenuation.x + (in_lights[iii].attenuation.y * distance) + (in_lights[iii].attenuation.z * distance * distance);
+		vec3 unitLightVector = normalize(io_toLightVector[iii]);
+		float nDot1 = dot(unitNormal, unitLightVector);
+		float brightness = max(nDot1, 0.0);
+		vec3 lightDirection = -unitLightVector;
+		vec3 reflectedLightDirection = reflect(lightDirection, unitNormal);
+		float specularFactor = dot(reflectedLightDirection, unitVectorToCamera);
+		specularFactor = max(specularFactor, 0.0);
+		float damperFactor = pow(specularFactor, tex_shininess);
+		vec3 diffuse = (brightness * in_lights[iii].color) / attenuationFactor;
+		vec3 finalSpecular = (damperFactor * tex_specularFactor.x * in_lights[iii].color) / attenuationFactor; // TODO: Remove the x ....
+		totalDiffuse = totalDiffuse + diffuse;
+		totalSpecular = totalSpecular + finalSpecular;
+	}
+	// the 0.2 represent the ambiant lightning ==> maybe set an uniform for this
+	//totalDiffuse = max(totalDiffuse, 1.0);
+	//totalDiffuse = min(totalDiffuse, 0.4);
+
+	//////out_Color = vec4(totalDiffuse,1.0) * textureColour + vec4(totalSpecular, 1.0);
+	out_Color = (vec4(totalDiffuse,1.0)*0.5+0.5) * textureColour;
+	/////out_Color = mix(vec4(in_sky_color,1.0), out_Color, io_fowVisibility);
 }
+
+
+
+
diff --git a/samples/resources/lowPoly/data/basicPalette.vert b/samples/resources/lowPoly/data/basicPalette.vert
index 62bc6b6..a707aa7 100644
--- a/samples/resources/lowPoly/data/basicPalette.vert
+++ b/samples/resources/lowPoly/data/basicPalette.vert
@@ -5,17 +5,55 @@ precision mediump float;
 precision mediump int;
 #endif
 
+struct Light {
+    vec3 color;
+    vec3 position;
+    vec3 attenuation;
+};
+const int MAX_LIGHT_NUMBER = 8;
+
 // Input:
 layout (location = 0) in vec3 in_position;
 layout (location = 1) in vec2 in_textureCoords;
+layout (location = 2) in vec3 in_normal;
+// 2 light for suns and other for locals ...
+uniform Light in_lights[MAX_LIGHT_NUMBER];
+
 uniform mat4 in_matrixTransformation;
 uniform mat4 in_matrixProjection;
 uniform mat4 in_matrixView;
 
+//uniform float in_numberOfRows;
+//uniform vec2 in_offset;
+const float in_numberOfRows = 1;
+const vec2 in_offset = vec2(0.0,0.0);
+
+// Configuration of the FOV ==> TODO: Set it in parameter uniform ...
+const float c_density = 0.007;
+const float c_gradient = 1.5;
+
 // output:
 out vec2 io_textureCoords;
+out vec3 io_surfaceNormal;
+out vec3 io_toCameraVector;
+out vec3 io_toLightVector[MAX_LIGHT_NUMBER];
+// FOW: Fog Of War result calculation
+out float io_fowVisibility;
 
 void main(void) {
-	gl_Position = in_matrixProjection * in_matrixView * in_matrixTransformation * vec4(in_position, 1.0);
-	io_textureCoords = in_textureCoords;
+	vec4 worldPosition = in_matrixTransformation * vec4(in_position, 1.0);
+	vec4 positionRelativeToCam = in_matrixView * worldPosition;
+	gl_Position = in_matrixProjection * positionRelativeToCam;
+	io_textureCoords = (in_textureCoords/in_numberOfRows) + in_offset;
+
+	io_surfaceNormal = (in_matrixTransformation * vec4(in_normal, 0.0)).xyz;
+	for(int iii=0;iii<MAX_LIGHT_NUMBER;iii++) {
+		io_toLightVector[iii] = in_lights[iii].position - worldPosition.xyz;
+	}
+	io_toCameraVector = (inverse(in_matrixView) * vec4(0.0,0.0,0.0,1.0)).xyz - worldPosition.xyz;
+
+	float distance = length(positionRelativeToCam.xyz);
+
+	io_fowVisibility = exp(-pow((distance*c_density),c_gradient));
+	io_fowVisibility = clamp(io_fowVisibility, 0.0, 1.0);
 }
diff --git a/samples/resources/lowPoly/data/palette_1.json b/samples/resources/lowPoly/data/palette_1.json
index 28f5754..4e937f5 100644
--- a/samples/resources/lowPoly/data/palette_1.json
+++ b/samples/resources/lowPoly/data/palette_1.json
@@ -20,6 +20,9 @@
 			"Kd":"0.800000 0.800000 0.800000"
 		},
 		"trunk_1":{
+			"Kd":"0.25 0.13 0.07"
+		},
+		"trunk_2":{
 			"Kd":"0.057805 0.039546 0.013702"
 		}
 	}
diff --git a/samples/resources/lowPoly/data/tree2.emf b/samples/resources/lowPoly/data/tree2.emf
new file mode 100644
index 0000000..5aa1119
--- /dev/null
+++ b/samples/resources/lowPoly/data/tree2.emf
@@ -0,0 +1,43 @@
+EMF(STRING)
+# Blender v2.92.0 EMF File: 'tree2.blend'
+Mesh:Arbre_Normal_Mesh
+	Vertex:72
+		0.164861 0.283095 -0.182282|0.296594 0.102843 -0.182282|0.262285 -0.117765 -0.182282|0.082033 -0.249498 -0.182282|-0.140442 -0.257426 1.112208|-0.138575 -0.215189 -0.182282|-0.270308 -0.034936 -0.182282|-0.235999 0.185671 -0.182282|-0.055746 0.317404 -0.182282|0.004174 0.104880 0.626072|-0.070307 0.050448 0.626072|-0.084483 -0.040707 0.626072|-0.030051 -0.115188 0.626072|0.061105 -0.129365 0.626072|0.135585 -0.074932 0.626072|0.149762 0.016223 0.626072|0.095330 0.090704 0.626072|0.131783 0.228776 0.144384|0.234794 0.087823 0.144384|0.207966 -0.084686 0.144384|0.067013 -0.187698 0.144384|-0.105496 -0.160870 0.144384|-0.208508 -0.019917 0.144384|-0.181680 0.152592 0.144384|-0.040727 0.255604 0.144384|-0.233253 -0.213791 1.276952|0.796562 0.093071 2.045288|-0.079560 -0.072400 0.472328|0.263731 -0.671928 1.484988|-0.492027 -0.430949 1.858150|-0.464678 0.219195 1.688762|0.196689 0.558278 1.845816|0.752521 -0.090017 2.031457|0.039375 -0.591035 2.826299|-0.381645 -0.167964 3.106963|-0.175674 0.320591 3.129268|0.318578 0.203395 3.129268|0.522390 -0.403724 2.780408|0.049018 -0.132857 3.844571|-0.436419 -0.336556 1.061941|0.052607 -0.355632 0.624801|-0.185480 -0.768599 1.658063|0.534482 -0.253957 0.971040|0.397067 -0.064053 0.643590|-0.400966 0.185825 0.678289|-0.685105 -0.210238 2.072247|0.090083 0.282084 0.508441|-0.230477 0.532597 1.676011|0.554104 0.309080 1.745713|0.542760 -0.541603 2.117762|0.662662 -0.260909 2.386214|-0.201184 -0.545764 2.506993|0.173347 -0.652987 2.237929|-0.534110 -0.021396 2.510209|-0.465882 -0.318980 2.510209|-0.037923 0.443776 2.522092|-0.361786 0.320313 2.510694|0.640551 0.128032 2.510694|0.308340 0.396739 2.522089|0.385339 -0.589000 2.655612|-0.261979 -0.400722 3.209551|-0.303237 0.082070 3.212219|0.037654 0.366781 3.252412|0.460448 -0.099796 3.202400|0.057823 -0.406951 3.435973|0.341217 -0.296551 3.410657|-0.204117 -0.153493 3.645294|-0.097317 0.147076 3.663867|0.193195 0.078191 3.663867|0.499957 -1.411272 1.359687|0.317072 0.229824 1.921540|0.054495 0.984295 1.927069|
+	Normal(face):118
+		0.000000 -0.000000 -1.000000|-0.152617 -0.981339 0.116970|0.794618 0.580726 0.177029|0.972515 -0.151245 0.177029|0.580726 -0.794618 0.177030|-0.151245 -0.972515 0.177029|-0.794618 -0.580726 0.177030|-0.972515 0.151245 0.177029|0.151245 0.972515 0.177029|-0.580726 0.794618 0.177030|0.147398 0.947778 0.282827|0.976960 -0.151937 0.149879|0.586819 -0.802955 0.104437|-0.794264 -0.580467 0.179453|-0.956081 0.148689 0.252589|-0.563962 0.771680 0.294035|0.786787 0.575003 0.224362|-0.152618 -0.981339 0.116970|0.972515 -0.151245 0.177030|0.580726 -0.794618 0.177029|-0.151245 -0.972515 0.177030|-0.972515 0.151245 0.177030|-0.580726 0.794618 0.177029|0.976961 -0.151936 0.149879|-0.555364 -0.579988 -0.595974|0.457226 -0.792485 -0.403623|-0.698585 -0.392144 -0.598500|-0.361098 0.263925 -0.894400|0.338436 -0.066338 -0.938648|0.713955 -0.677917 -0.175204|-0.674831 -0.716762 0.175659|-0.857664 0.508498 0.076439|-0.110363 0.985539 0.128578|0.893993 0.448052 0.005014|0.306181 -0.950039 0.060654|-0.641707 -0.751181 0.154721|-0.891502 0.449505 0.056301|0.131612 0.968867 0.209701|0.971478 -0.020385 0.236253|0.144704 -0.948441 0.281992|-0.895095 -0.326221 0.303949|-0.799039 0.527619 0.288365|0.576149 0.755431 0.312051|0.922569 -0.235898 0.305319|-0.770834 -0.624081 -0.127823|-0.405608 -0.812724 -0.418286|0.062587 -0.931647 -0.357934|0.933424 0.271984 -0.233976|0.544543 -0.605934 -0.579928|0.324692 -0.326377 -0.887724|-0.911698 0.404706 -0.070849|-0.968964 -0.100206 -0.225981|-0.803705 -0.581730 -0.125098|0.022211 0.978740 -0.203900|-0.275219 0.921710 -0.273324|-0.800436 0.595302 -0.070128|0.926984 0.294829 -0.231899|0.768782 0.564439 -0.300637|0.518155 0.828492 -0.212404|0.861560 -0.491080 0.128665|0.943484 -0.319788 -0.087027|0.808719 -0.583250 -0.076115|-0.243949 -0.968675 0.046448|-0.095389 -0.963255 0.251080|0.229197 -0.971992 0.051965|-0.956844 -0.219379 0.190583|-0.894652 -0.205120 0.396892|-0.666071 -0.730216 0.152097|-0.357453 0.927766 0.107131|-0.356011 0.917500 0.177341|-0.800245 0.599089 0.026474|0.616860 0.752916 0.229350|0.627266 0.770777 0.111535|0.587125 0.803892 0.095090|0.064549 -0.990791 0.119021|0.288718 -0.957414 0.000133|0.739582 -0.654059 0.158827|-0.903564 -0.367352 0.220508|-0.646653 -0.756180 0.100155|-0.378320 -0.912496 0.155646|-0.816738 0.522177 0.245500|-0.870792 0.438826 0.221705|-0.942523 0.175999 0.284032|0.564843 0.789002 0.241718|0.134056 0.986863 0.090168|-0.280573 0.951083 0.129303|0.945324 -0.182563 0.270246|0.969312 -0.023224 0.244736|0.807100 0.465318 0.363411|0.348922 -0.774768 0.527246|0.366741 -0.860105 0.354572|0.655280 -0.690710 0.305823|-0.343921 -0.783210 0.517978|-0.366167 -0.787647 0.495513|-0.222040 -0.931538 0.287986|-0.617951 0.172171 0.767133|-0.885349 0.292244 0.361594|-0.937867 0.165784 0.304829|0.139289 0.587426 0.797201|0.198256 0.836106 0.511490|-0.380275 0.861884 0.335479|0.816006 -0.065729 0.574295|0.866067 0.004307 0.499910|0.832741 0.462919 0.303724|
+	Face:118
+		palette:trunk_1
+			 3/0 6/0 8/0| 20/1 12/1 21/1| 17/2 1/2 0/2| 18/3 2/3 1/3| 19/4 3/4 2/4| 20/5 5/5 3/5| 21/6 6/6 5/6| 22/7 7/7 6/7| 24/8 0/8 8/8| 23/9 8/9 7/9| 17/10 9/10 16/10| 19/11 15/11 14/11| 20/12 14/12 13/12| 21/13 11/13 22/13| 22/14 10/14 23/14| 23/15 9/15 24/15| 18/16 16/16 15/16| 8/0 0/0 3/0| 0/0 1/0 3/0| 1/0 2/0 3/0| 3/0 5/0 6/0| 6/0 7/0 8/0| 20/17 13/17 12/17| 17/2 18/2 1/2| 18/18 19/18 2/18| 19/19 20/19 3/19| 20/20 21/20 5/20| 21/6 22/6 6/6| 22/21 23/21 7/21| 24/8 17/8 0/8| 23/22 24/22 8/22| 17/10 24/10 9/10| 19/23 18/23 15/23| 20/12 19/12 14/12| 21/13 12/13 11/13| 22/14 11/14 10/14| 23/15 10/15 9/15| 18/16 17/16 16/16|
+		palette:leaf_1
+			 27/24 40/24 39/24| 28/25 40/25 42/25| 27/26 39/26 44/26| 27/27 44/27 46/27| 27/28 46/28 43/28| 28/29 42/29 49/29| 29/30 41/30 51/30| 30/31 45/31 53/31| 31/32 47/32 55/32| 32/33 48/33 57/33| 28/34 49/34 52/34| 29/35 51/35 54/35| 30/36 53/36 56/36| 31/37 55/37 58/37| 32/38 57/38 50/38| 33/39 59/39 64/39| 34/40 60/40 66/40| 35/41 61/41 67/41| 36/42 62/42 68/42| 37/43 63/43 65/43| 39/44 41/44 29/44| 39/45 40/45 41/45| 40/46 28/46 41/46| 42/47 43/47 32/47| 42/48 40/48 43/48| 40/49 27/49 43/49| 44/50 45/50 30/50| 44/51 39/51 45/51| 39/52 29/52 45/52| 46/53 47/53 31/53| 46/54 44/54 47/54| 44/55 30/55 47/55| 43/56 48/56 32/56| 43/57 46/57 48/57| 46/58 31/58 48/58| 49/59 50/59 37/59| 49/60 42/60 50/60| 42/61 32/61 50/61| 51/62 52/62 33/62| 51/63 41/63 52/63| 41/64 28/64 52/64| 53/65 54/65 34/65| 53/66 45/66 54/66| 45/67 29/67 54/67| 55/68 56/68 35/68| 55/69 47/69 56/69| 47/70 30/70 56/70| 57/71 58/71 36/71| 57/72 48/72 58/72| 48/73 31/73 58/73| 52/74 59/74 33/74| 52/75 49/75 59/75| 49/76 37/76 59/76| 54/77 60/77 34/77| 54/78 51/78 60/78| 51/79 33/79 60/79| 56/80 61/80 35/80| 56/81 53/81 61/81| 53/82 34/82 61/82| 58/83 62/83 36/83| 58/84 55/84 62/84| 55/85 35/85 62/85| 50/86 63/86 37/86| 50/87 57/87 63/87| 57/88 36/88 63/88| 64/89 65/89 38/89| 64/90 59/90 65/90| 59/91 37/91 65/91| 66/92 64/92 38/92| 66/93 60/93 64/93| 60/94 33/94 64/94| 67/95 66/95 38/95| 67/96 61/96 66/96| 61/97 34/97 66/97| 68/98 67/98 38/98| 68/99 62/99 67/99| 62/100 35/100 67/100| 65/101 68/101 38/101| 65/102 63/102 68/102| 63/103 36/103 68/103|
+Physics:
+	Cylinder
+		radius:0.25
+		size:2.0
+		origin:0.0117903 0.0311268 0.962411
+		mass:6.25
+	Sphere
+		radius:1.3350000381469727
+		origin:-0.093534 -0.0233787 2.81849
+		mass:237.92705789594712
+
+# Just for information:
+Palettes:leaf_1
+	Ns 225.000000
+	Ka 1.000000 1.000000 1.000000
+	Kd 0.346704 0.558341 0.090842
+	Ks 0.500000 0.500000 0.500000
+	Ke 0.000000 0.000000 0.000000
+	vNi 1.000000
+	d 1.000000
+	illum 2
+# Just for information:
+Palettes:trunk_1
+	Ns 225.000000
+	Ka 1.000000 1.000000 1.000000
+	Kd 0.057805 0.039546 0.013702
+	Ks 0.500000 0.500000 0.500000
+	Ke 0.000000 0.000000 0.000000
+	vNi 1.000000
+	d 1.000000
+	illum 2
diff --git a/samples/resources/lowPoly/tree2.blend b/samples/resources/lowPoly/tree2.blend
new file mode 100644
index 0000000..e711e92
Binary files /dev/null and b/samples/resources/lowPoly/tree2.blend differ
diff --git a/samples/src/sample/atriasoft/ege/lowPoly/LowPolyApplication.java b/samples/src/sample/atriasoft/ege/lowPoly/LowPolyApplication.java
index 6a1f3d0..2f3295b 100644
--- a/samples/src/sample/atriasoft/ege/lowPoly/LowPolyApplication.java
+++ b/samples/src/sample/atriasoft/ege/lowPoly/LowPolyApplication.java
@@ -9,12 +9,10 @@ import org.atriasoft.ege.Material;
 import org.atriasoft.ege.camera.Camera;
 import org.atriasoft.ege.components.ComponentLight;
 import org.atriasoft.ege.components.ComponentLightSun;
-import org.atriasoft.ege.components.ComponentMaterial;
 import org.atriasoft.ege.components.ComponentMesh;
 import org.atriasoft.ege.components.ComponentPosition;
 import org.atriasoft.ege.components.ComponentRenderColoredStaticMesh;
 import org.atriasoft.ege.components.ComponentRenderMeshPalette;
-import org.atriasoft.ege.components.ComponentRenderTexturedMaterialsStaticMesh;
 import org.atriasoft.ege.components.ComponentRenderTexturedStaticMesh;
 import org.atriasoft.ege.components.ComponentStaticMesh;
 import org.atriasoft.ege.components.ComponentTexture;
@@ -64,7 +62,7 @@ public class LowPolyApplication extends GaleApplication {
 		// simple sun to have a global light ...
 		final Entity sun = new Entity(this.env);
 		sun.addComponent(new ComponentPosition(new Transform3D(new Vector3f(1000, 1000, 1000))));
-		sun.addComponent(new ComponentLightSun(new Light(new Vector3f(0.4f, 0.4f, 0.4f), new Vector3f(0, 0, 0), new Vector3f(0.8f, 0, 0))));
+		sun.addComponent(new ComponentLightSun(new Light(new Color(1.0f, 1.0f, 1.0f), new Vector3f(0, 0, 0), new Vector3f(1.0f, 0, 0))));
 		this.env.addEntity(sun);
 		
 		// add a cube to show where in the light ...
@@ -73,7 +71,7 @@ public class LowPolyApplication extends GaleApplication {
 		localLight.addComponent(this.lightPosition);
 		localLight.addComponent(new ComponentStaticMesh(new Uri("DATA", "cube-one.obj")));
 		localLight.addComponent(new ComponentTexture(new Uri("DATA", "grass.png")));
-		localLight.addComponent(new ComponentLight(new Light(new Vector3f(0, 2, 0), new Vector3f(0, 0, 0), new Vector3f(0.8f, 0.01f, 0.002f))));
+		localLight.addComponent(new ComponentLight(new Light(new Color(0.0f, 0.0f, 2.0f), new Vector3f(0, 0, 0), new Vector3f(0.8f, 0.01f, 0.002f))));
 		localLight.addComponent(new ComponentRenderTexturedStaticMesh(new Uri("DATA", "basic.vert", "loxelEngine"), new Uri("DATA", "basic.frag", "loxelEngine")));
 		this.env.addEntity(localLight);
 		
@@ -85,19 +83,31 @@ public class LowPolyApplication extends GaleApplication {
 		this.env.addEntity(gird);
 		
 		// test entity
-		final Entity basicTree = new Entity(this.env);
+		Entity basicTree = new Entity(this.env);
 		this.objectPosition = new ComponentPosition(new Transform3D(new Vector3f(0, 0, 0)));
 		basicTree.addComponent(this.objectPosition);
 		//this.materialCube = new Material();
 		//basicTree.addComponent(new ComponentMaterial(this.materialCube));
 		basicTree.addComponent(new ComponentMesh(new Uri("DATA", "tree1.emf")));
-		//basicTree.addComponent(new ComponentMesh(new Uri("DATA", "simple3D.emf")));
-		//basicTree.addComponent(new ComponentTexture(new Uri("RES", "mud.png")));
 		basicTree.addComponent(new ComponentTexturePalette(new Uri("DATA", "palette_1.json")));
 		//basicTree.addComponent(new ComponentRenderTexturedStaticMesh(new Uri("DATA", "basic.vert", "loxelEngine"), new Uri("DATA", "basic.frag", "loxelEngine")));
-		basicTree.addComponent(new ComponentRenderMeshPalette(new Uri("DATA", "basicPalette.vert"), new Uri("DATA", "basicPalette.frag")));
+		basicTree.addComponent(new ComponentRenderMeshPalette(new Uri("DATA", "basicPalette.vert"), new Uri("DATA", "basicPalette.frag"),
+					(EngineLight) this.env.getEngine(EngineLight.ENGINE_NAME)));
 		this.env.addEntity(basicTree);
 
+		
+		basicTree = new Entity(this.env);
+		this.objectPosition = new ComponentPosition(new Transform3D(new Vector3f(3, 2, 0)));
+		basicTree.addComponent(this.objectPosition);
+		//this.materialCube = new Material();
+		//basicTree.addComponent(new ComponentMaterial(this.materialCube));
+		basicTree.addComponent(new ComponentMesh(new Uri("DATA", "tree2.emf")));
+		basicTree.addComponent(new ComponentTexturePalette(new Uri("DATA", "palette_1.json")));
+		//basicTree.addComponent(new ComponentRenderTexturedStaticMesh(new Uri("DATA", "basic.vert", "loxelEngine"), new Uri("DATA", "basic.frag", "loxelEngine")));
+		basicTree.addComponent(new ComponentRenderMeshPalette(new Uri("DATA", "basicPalette.vert"), new Uri("DATA", "basicPalette.frag"),
+					(EngineLight) this.env.getEngine(EngineLight.ENGINE_NAME)));
+		this.env.addEntity(basicTree);
+		
 //		for (int xxx = -10; xxx < 10; xxx++) {
 //			for (int yyy = -10; yyy < 10; yyy++) {
 //				final Entity superGrass = new Entity(this.env);
diff --git a/src/org/atriasoft/ege/Light.java b/src/org/atriasoft/ege/Light.java
index d4bb7b0..a32cc92 100644
--- a/src/org/atriasoft/ege/Light.java
+++ b/src/org/atriasoft/ege/Light.java
@@ -1,38 +1,44 @@
 package org.atriasoft.ege;
 
+import org.atriasoft.etk.Color;
 import org.atriasoft.etk.math.Vector3f;
 
 public class Light {
-    private Vector3f color;
+    private Color color;
     // A light is linked with an entity, then the entity position the object and the light have a relative position with the entity
     private Vector3f positionDelta;
     private Vector3f attenuation;
-	public Light(Vector3f color, Vector3f positionDelta, Vector3f attenuation) {
+	public Light(final Color color, final Vector3f positionDelta, final Vector3f attenuation) {
 		this.color = color;
 		this.positionDelta = positionDelta;
 		this.attenuation = attenuation;
 	}
 	public Light() {
-		this.color = new Vector3f(1.0f,1.0f,1.0f);
-		this.positionDelta = new Vector3f(0.0f,0.0f,0.0f);
-		this.attenuation = new Vector3f(0.0f,0.0f,0.0f);;
+		this.color = Color.WHITE;
+		this.positionDelta = Vector3f.ZERO;
+		this.attenuation = Vector3f.ZERO;
 	}
-	public Vector3f getColor() {
-		return color;
+	public Color getColor() {
+		return this.color;
 	}
-	public void setColor(Vector3f color) {
+	public void setColor(final Color color) {
 		this.color = color;
 	}
 	public Vector3f getPositionDelta() {
-		return positionDelta;
+		return this.positionDelta;
 	}
-	public void setPositionDelta(Vector3f positionDelta) {
+	public void setPositionDelta(final Vector3f positionDelta) {
 		this.positionDelta = positionDelta;
 	}
 	public Vector3f getAttenuation() {
-		return attenuation;
+		return this.attenuation;
 	}
-	public void setAttenuation(Vector3f attenuation) {
+	public void setAttenuation(final Vector3f attenuation) {
 		this.attenuation = attenuation;
 	}
+	@Override
+	public String toString() {
+		return "Light [color=" + this.color + ", positionDelta=" + this.positionDelta + ", attenuation=" + this.attenuation + "]";
+	}
+	
 }
diff --git a/src/org/atriasoft/ege/components/ComponentLight.java b/src/org/atriasoft/ege/components/ComponentLight.java
index 342c0e5..b774397 100644
--- a/src/org/atriasoft/ege/components/ComponentLight.java
+++ b/src/org/atriasoft/ege/components/ComponentLight.java
@@ -2,31 +2,26 @@ package org.atriasoft.ege.components;
 
 import org.atriasoft.ege.Component;
 import org.atriasoft.ege.Light;
+import org.atriasoft.ege.components.part.PositionningInterface;
 import org.atriasoft.etk.math.Vector3f;
 
 public class ComponentLight extends Component {
 	// the material is not a resource, it can change in time... with AI or selection...
 	private final Light light;
-	private ComponentPosition position;
-	private ComponentPhysics playerPhysics = null;
+	private PositionningInterface position = null;
 	
 	public ComponentLight() {
-		super();
 		this.light = new Light();
 	}
 	
 	public ComponentLight(final Light light) {
-		super();
 		this.light = light;
 	}
 	
 	@Override
 	public void addFriendComponent(final Component component) {
-		if (component.getType().contentEquals("position")) {
-			this.position = (ComponentPosition) component;
-		}
-		if (component.getType().contentEquals("physics")) {
-			this.playerPhysics = (ComponentPhysics) component;
+		if (component.getType().contentEquals("position") || component.getType().contentEquals("physics")) {
+			this.position = (PositionningInterface)component;
 		}
 	}
 	
@@ -37,8 +32,6 @@ public class ComponentLight extends Component {
 	public Vector3f getPosition() {
 		if (this.position != null) {
 			return this.position.getTransform().getPosition().add(this.light.getPositionDelta());
-		} else if (this.playerPhysics != null) {
-			return this.playerPhysics.getTransform().getPosition().add(this.light.getPositionDelta());
 		}
 		return null;
 	}
diff --git a/src/org/atriasoft/ege/components/ComponentLightSun.java b/src/org/atriasoft/ege/components/ComponentLightSun.java
index e2a70be..4ff411d 100644
--- a/src/org/atriasoft/ege/components/ComponentLightSun.java
+++ b/src/org/atriasoft/ege/components/ComponentLightSun.java
@@ -1,20 +1,20 @@
 package org.atriasoft.ege.components;
 
 import org.atriasoft.ege.Light;
+import org.atriasoft.ege.engines.EngineLight;
 
-public class ComponentLightSun extends ComponentLight{
+public class ComponentLightSun extends ComponentLight {
 
 	public ComponentLightSun() {
-		super();
 	}
 
-	public ComponentLightSun(Light light) {
+	public ComponentLightSun(final Light light) {
 		super(light);
 	}
 	
-//	@Override
-//	public String getType() {
-//		return "sun";
-//	}
+	@Override
+	public String getType() {
+		return EngineLight.ENGINE_NAME;
+	}
 	
 }
diff --git a/src/org/atriasoft/ege/components/ComponentPosition.java b/src/org/atriasoft/ege/components/ComponentPosition.java
index 3e47544..6647a50 100644
--- a/src/org/atriasoft/ege/components/ComponentPosition.java
+++ b/src/org/atriasoft/ege/components/ComponentPosition.java
@@ -2,10 +2,11 @@ package org.atriasoft.ege.components;
 
 import org.atriasoft.ege.Component;
 import org.atriasoft.ege.Signal;
+import org.atriasoft.ege.components.part.PositionningInterface;
 import org.atriasoft.ege.internal.Log;
 import org.atriasoft.etk.math.Transform3D;
 
-public class ComponentPosition extends Component {
+public class ComponentPosition extends Component implements PositionningInterface {
 	public final Signal<Transform3D> signalPosition = new Signal<Transform3D>();
 	protected Transform3D transform;
 	
@@ -35,6 +36,7 @@ public class ComponentPosition extends Component {
 	 * set a new transformation
 	 * @return Transformation of the position
 	 */
+	@Override
 	public Transform3D getTransform() {
 		return this.transform;
 	}
diff --git a/src/org/atriasoft/ege/components/ComponentRenderColoredStaticMesh.java b/src/org/atriasoft/ege/components/ComponentRenderColoredStaticMesh.java
index 5432f5a..c176212 100644
--- a/src/org/atriasoft/ege/components/ComponentRenderColoredStaticMesh.java
+++ b/src/org/atriasoft/ege/components/ComponentRenderColoredStaticMesh.java
@@ -2,65 +2,56 @@
 package org.atriasoft.ege.components;
 
 import org.atriasoft.ege.Component;
+import org.atriasoft.ege.components.part.PositionningInterface;
+import org.atriasoft.ege.components.part.TransformRender;
 import org.atriasoft.etk.Uri;
-import org.atriasoft.etk.math.Matrix4f;
 import org.atriasoft.gale.backend3d.OpenGL;
 import org.atriasoft.gale.resource.ResourceProgram;
 
 public class ComponentRenderColoredStaticMesh extends ComponentRender {
 	ComponentStaticMesh mesh = null;
-	private int oGLMatrixProjection;
-	private int oGLMatrixTransformation;
-	private int oGLMatrixView;
-	ComponentPosition position = null;
 	ResourceProgram program = null;
+	TransformRender renderTransform = null;
 	
-	public ComponentRenderColoredStaticMesh(Uri vertexShader, Uri fragmentShader) {
+	public ComponentRenderColoredStaticMesh(final Uri vertexShader, final Uri fragmentShader) {
+		this.renderTransform = new TransformRender();
 		this.program = ResourceProgram.create(vertexShader, fragmentShader);
 		if (this.program != null) {
-			this.oGLMatrixTransformation = this.program.getUniform("in_matrixTransformation");
-			this.oGLMatrixProjection = this.program.getUniform("in_matrixProjection");
-			this.oGLMatrixView = this.program.getUniform("in_matrixView");
+			this.renderTransform.init(this.program);
 		}
 		
 	}
 	
 	@Override
-	public void addFriendComponent(Component component) {
-		if (component.getType().contentEquals("static-mesh")) {
-			this.mesh = (ComponentStaticMesh) component;
+	public void addFriendComponent(final Component component) {
+		if (component instanceof ComponentStaticMesh refTyped) {
+			this.mesh = refTyped;
 		}
-		if (component.getType().contentEquals("position")) {
-			this.position = (ComponentPosition) component;
+			if (component instanceof PositionningInterface refTyped) {
+			this.renderTransform.setPositionning(refTyped);
 		}
 	}
 	
 	@Override
-	public void removeFriendComponent(Component component) {
+	public void removeFriendComponent(final Component component) {
 		// nothing to do.
 	}
 	
 	@Override
 	public void render() {
+		// Select the program:
 		this.program.use();
-		
-		final Matrix4f projectionMatrix = OpenGL.getMatrix();
-		final Matrix4f viewMatrix = OpenGL.getCameraMatrix();
-		//Log.warning("position 22  " + this.position.getTransform());
-		final Matrix4f transformationMatrix = this.position.getTransform().getOpenGLMatrix();
+		// Bind all the element for the rendering:
+		this.renderTransform.bindForRendering(this.program);
 		this.mesh.bindForRendering();
-		
-		this.program.uniformMatrix(this.oGLMatrixView, viewMatrix);
-		this.program.uniformMatrix(this.oGLMatrixProjection, projectionMatrix);
-		// Change the position for each element with the same pipeline you need to render ...
-		this.program.uniformMatrix(this.oGLMatrixTransformation, transformationMatrix);
 		// update of flags is done asyncronously ==> need update befor drawing...
 		OpenGL.updateAllFlags();
 		// Request the draw od the elements:
 		this.mesh.render();
-		
+		// remove all element to render:
+		this.renderTransform.unBindForRendering();
 		this.mesh.unBindForRendering();
-		
+		// Disable program:
 		this.program.unUse();
 	}
 }
diff --git a/src/org/atriasoft/ege/components/ComponentRenderMeshPalette.java b/src/org/atriasoft/ege/components/ComponentRenderMeshPalette.java
index 83b6304..b275f3c 100644
--- a/src/org/atriasoft/ege/components/ComponentRenderMeshPalette.java
+++ b/src/org/atriasoft/ege/components/ComponentRenderMeshPalette.java
@@ -1,44 +1,50 @@
 package org.atriasoft.ege.components;
 
 import org.atriasoft.ege.Component;
+import org.atriasoft.ege.components.part.LightRender;
+import org.atriasoft.ege.components.part.PositionningInterface;
+import org.atriasoft.ege.components.part.TransformRender;
+import org.atriasoft.ege.engines.EngineLight;
 import org.atriasoft.etk.Uri;
-import org.atriasoft.etk.math.Matrix4f;
 import org.atriasoft.gale.backend3d.OpenGL;
 import org.atriasoft.gale.resource.ResourceProgram;
 
 public class ComponentRenderMeshPalette extends ComponentRender {
-	private int GLMatrixProjection;
-	private int GLMatrixTransformation;
-	private int GLMatrixView;
 	ComponentMesh mesh = null;
-	private ComponentPhysics playerPhysics = null;
-	ComponentPosition position = null;
 	ResourceProgram program = null;
 	ComponentTexturePalette texture = null;
 	
-	public ComponentRenderMeshPalette(final Uri vertexShader, final Uri fragmentShader) {
+	LightRender renderLight = null;
+	TransformRender renderTransform = null;
+	
+	public ComponentRenderMeshPalette(final Uri vertexShader, final Uri fragmentShader, final EngineLight lightEngine) {
+		if (lightEngine != null) {
+			this.renderLight = new LightRender(lightEngine);
+		}
+		this.renderTransform = new TransformRender();
 		this.program = ResourceProgram.create(vertexShader, fragmentShader);
 		if (this.program != null) {
-			this.GLMatrixTransformation = this.program.getUniform("in_matrixTransformation");
-			this.GLMatrixProjection = this.program.getUniform("in_matrixProjection");
-			this.GLMatrixView = this.program.getUniform("in_matrixView");
+			this.renderTransform.init(this.program);
+			if (this.renderLight != null) {
+				this.renderLight.init(this.program);
+			}
 		}
 		
 	}
 	
 	@Override
 	public void addFriendComponent(final Component component) {
-		if (component.getType().contentEquals("mesh")) {
-			this.mesh = (ComponentMesh) component;
+		if (component instanceof ComponentMesh refTyped) {
+			this.mesh = refTyped;
 		}
-		if (component.getType().contentEquals("texture")) {
-			this.texture = (ComponentTexturePalette) component;
+		if (component instanceof ComponentTexturePalette refTyped) {
+			this.texture = refTyped;
 		}
-		if (component.getType().contentEquals("position")) {
-			this.position = (ComponentPosition) component;
-		}
-		if (component.getType().contentEquals("physics")) {
-			this.playerPhysics = (ComponentPhysics) component;
+		if (component instanceof PositionningInterface refTyped) {
+			this.renderTransform.setPositionning(refTyped);
+			if (this.renderLight != null) {
+				this.renderLight.setPositionning(refTyped);
+			}
 		}
 	}
 	
@@ -49,30 +55,27 @@ public class ComponentRenderMeshPalette extends ComponentRender {
 	
 	@Override
 	public void render() {
+		// Select the program:
 		this.program.use();
-		final Matrix4f projectionMatrix = OpenGL.getMatrix();
-		final Matrix4f viewMatrix = OpenGL.getCameraMatrix();
-		Matrix4f transformationMatrix = null;
-		if (this.position != null) {
-			//Log.warning("position " + this.position.getTransform());
-			transformationMatrix = this.position.getTransform().getOpenGLMatrix();
-		} else if (this.playerPhysics != null) {
-			//Log.warning("playerPosition " + this.playerPhysics.getTransform());
-			transformationMatrix = this.playerPhysics.getTransform().getOpenGLMatrix();
-		}
+		// Bind all the element for the rendering:
 		this.mesh.bindForRendering();
 		this.texture.bindForRendering();
-		this.program.uniformMatrix(this.GLMatrixView, viewMatrix);
-		this.program.uniformMatrix(this.GLMatrixProjection, projectionMatrix);
-		// Change the position for each element with the same pipeline you need to render ...
-		this.program.uniformMatrix(this.GLMatrixTransformation, transformationMatrix);
+		if (this.renderLight != null) {
+			this.renderLight.bindForRendering(this.program);
+		}
+		this.renderTransform.bindForRendering(this.program);
 		// update of flags is done asynchronously ==> need update before drawing...
 		OpenGL.updateAllFlags();
 		// Request the draw all the elements:
 		this.mesh.renderArrays();
-		
+		// remove all element to render:
+		this.renderTransform.unBindForRendering();
+		if (this.renderLight != null) {
+			this.renderLight.unBindForRendering();
+		}
 		this.texture.unBindForRendering();
 		this.mesh.unBindForRendering();
+		// Disable program:
 		this.program.unUse();
 	}
 }
diff --git a/src/org/atriasoft/ege/components/ComponentRenderTexturedMaterialsDynamicMeshs.java b/src/org/atriasoft/ege/components/ComponentRenderTexturedMaterialsDynamicMeshs.java
index b57ee93..c41dda1 100644
--- a/src/org/atriasoft/ege/components/ComponentRenderTexturedMaterialsDynamicMeshs.java
+++ b/src/org/atriasoft/ege/components/ComponentRenderTexturedMaterialsDynamicMeshs.java
@@ -2,107 +2,79 @@ package org.atriasoft.ege.components;
 
 import java.util.Set;
 
-import org.atriasoft.ege.internal.Log;
 import org.atriasoft.ege.Component;
-import org.atriasoft.ege.Light;
-import org.atriasoft.ege.Material;
+import org.atriasoft.ege.components.part.LightRender;
+import org.atriasoft.ege.components.part.MaterialsRender;
+import org.atriasoft.ege.components.part.PositionningInterface;
+import org.atriasoft.ege.components.part.TransformRender;
+import org.atriasoft.ege.engines.EngineLight;
 import org.atriasoft.etk.Uri;
-import org.atriasoft.etk.math.Matrix4f;
-import org.atriasoft.etk.math.Vector3f;
 import org.atriasoft.gale.backend3d.OpenGL;
 import org.atriasoft.gale.resource.ResourceProgram;
-import org.atriasoft.ege.engines.EngineLight;
 
 public class ComponentRenderTexturedMaterialsDynamicMeshs extends ComponentRender {
-	private static final int numberOfLight = 8;
 	ComponentDynamicMeshs meshs = null;
 	ComponentTextures textures = null;
-	ComponentMaterials materials = null;
 	ComponentPosition position = null;
 	ResourceProgram program = null;
-	EngineLight lightEngine;
-	private int GLMatrixTransformation;
-	private int GLMatrixProjection;
-	private int GLMatrixView;
-	private int GLambientFactor;
-	private int GLdiffuseFactor;
-	private int GLspecularFactor;
-	private int GLshininess;
-	private GlLightIndex[] GLlights;
+
+	LightRender renderLight = null;
+	MaterialsRender renderMaterials = null;
+	TransformRender renderTransform = null;
 	
-	public ComponentRenderTexturedMaterialsDynamicMeshs(Uri vertexShader, Uri fragmentShader, EngineLight lightEngine) {
-		this.lightEngine = lightEngine;
+	public ComponentRenderTexturedMaterialsDynamicMeshs(final Uri vertexShader, final Uri fragmentShader, final EngineLight lightEngine) {
+		if (lightEngine != null) {
+			this.renderLight = new LightRender(lightEngine);
+		}
+		this.renderTransform = new TransformRender();
+		this.renderMaterials = new MaterialsRender();
 		this.program = ResourceProgram.create(vertexShader, fragmentShader);
 		if (this.program != null) {
-			this.GLMatrixTransformation = this.program.getUniform("in_matrixTransformation");
-			this.GLMatrixProjection     = this.program.getUniform("in_matrixProjection");
-			this.GLMatrixView           = this.program.getUniform("in_matrixView");
-			this.GLambientFactor        = this.program.getUniform("in_material.ambientFactor");
-			this.GLdiffuseFactor        = this.program.getUniform("in_material.diffuseFactor");
-			this.GLspecularFactor       = this.program.getUniform("in_material.specularFactor");
-			this.GLshininess            = this.program.getUniform("in_material.shininess");
-			this.GLlights = new GlLightIndex[numberOfLight];
-			for (int iii=0; iii<numberOfLight; iii++) {
-				int color       = this.program.getUniform("in_lights[" + iii + "].color");
-				int position    = this.program.getUniform("in_lights[" + iii + "].position");
-				int attenuation = this.program.getUniform("in_lights[" + iii + "].attenuation");
-				this.GLlights[iii] = new GlLightIndex(color, position, attenuation);
+			this.renderTransform.init(this.program);
+			if (this.renderLight != null) {
+				this.renderLight.init(this.program);
 			}
+			this.renderMaterials.init(this.program);
 		}
 		
 	}
 	@Override
-	public void addFriendComponent(Component component) {
-		if (component.getType().contentEquals("dynamic-meshs")) {
-			meshs = (ComponentDynamicMeshs)component;
+	public void addFriendComponent(final Component component) {
+		if (component instanceof ComponentDynamicMeshs refTyped) {
+			this.meshs = refTyped;
 		}
-		if (component.getType().contentEquals("textures")) {
-			textures = (ComponentTextures)component;
+		if (component instanceof ComponentTextures refTyped) {
+			this.textures = refTyped;
 		}
-		if (component.getType().contentEquals("materials")) {
-			materials = (ComponentMaterials)component;
+		if (component instanceof ComponentMaterials refTyped) {
+			this.renderMaterials.setMaterial(refTyped);
 		}
-		if (component.getType().contentEquals("position")) {
-			position = (ComponentPosition)component;
+		if (component instanceof PositionningInterface refTyped) {
+			this.renderTransform.setPositionning(refTyped);
+			if (this.renderLight != null) {
+				this.renderLight.setPositionning(refTyped);
+			}
 		}
 	}
 	@Override
-	public void removeFriendComponent(Component component) {
+	public void removeFriendComponent(final Component component) {
 		// nothing to do.
 	}
 	@Override
 	public void render() {
+		// Select the program:
 		this.program.use();
-		Light[] lights = this.lightEngine.getNearest(position.getTransform().getPosition());
-		Matrix4f projectionMatrix = OpenGL.getMatrix();
-		Matrix4f viewMatrix = OpenGL.getCameraMatrix();
-		Matrix4f transformationMatrix = position.getTransform().getOpenGLMatrix();
-		Set<String> keys = this.meshs.getKeys();
-		
-		for (int iii=0; iii<numberOfLight; iii++) {
-			if (lights[iii] != null) {
-				this.program.uniformVector(this.GLlights[iii].oGLposition, lights[iii].getPositionDelta());
-				this.program.uniformVector(this.GLlights[iii].oGLcolor, lights[iii].getColor());
-				this.program.uniformVector(this.GLlights[iii].oGLattenuation, lights[iii].getAttenuation());
-			} else {
-				this.program.uniformVector(this.GLlights[iii].oGLposition, new Vector3f(0,0,0));
-				this.program.uniformVector(this.GLlights[iii].oGLcolor, new Vector3f(0,0,0));
-				this.program.uniformVector(this.GLlights[iii].oGLattenuation, new Vector3f(1,0,0));
-			}
+		// Bind all the element for the rendering:
+		if (this.renderLight != null) {
+			this.renderLight.bindForRendering(this.program);
 		}
-		this.program.uniformMatrix(this.GLMatrixView, viewMatrix);
-		this.program.uniformMatrix(this.GLMatrixProjection, projectionMatrix);
-		// Change the position for each element with the same pipeline you need to render ...
-		this.program.uniformMatrix(this.GLMatrixTransformation, transformationMatrix);
+		this.renderTransform.bindForRendering(this.program);		
+		Set<String> keys = this.meshs.getKeys();
 		
 		for (String key : keys) {
 			this.meshs.bindForRendering(key);
 			this.textures.bindForRendering(key);
-			Material mat = this.materials.getMaterial(key);
-			this.program.uniformVector(GLambientFactor, mat.getAmbientFactor());
-			this.program.uniformVector(GLdiffuseFactor, mat.getDiffuseFactor());
-			this.program.uniformVector(GLspecularFactor, mat.getSpecularFactor());
-			this.program.uniformFloat(GLshininess, mat.getShininess());
+			this.renderMaterials.bindForRendering(this.program, key);
 			// update of flags is done asynchronously ==> need update before drawing...
 			OpenGL.updateAllFlags();
 			// Request the draw all the elements:
@@ -110,6 +82,11 @@ public class ComponentRenderTexturedMaterialsDynamicMeshs extends ComponentRende
 			this.textures.unBindForRendering(key);
 			this.meshs.unBindForRendering(key);
 		}
+		// remove all element to render:
+		this.renderTransform.unBindForRendering();
+		if (this.renderLight != null) {
+			this.renderLight.unBindForRendering();
+		}
 		this.program.unUse();
 	}
 }
diff --git a/src/org/atriasoft/ege/components/ComponentRenderTexturedMaterialsStaticMesh.java b/src/org/atriasoft/ege/components/ComponentRenderTexturedMaterialsStaticMesh.java
index 46d770b..ff7abcb 100644
--- a/src/org/atriasoft/ege/components/ComponentRenderTexturedMaterialsStaticMesh.java
+++ b/src/org/atriasoft/ege/components/ComponentRenderTexturedMaterialsStaticMesh.java
@@ -1,71 +1,62 @@
 package org.atriasoft.ege.components;
 
 import org.atriasoft.ege.Component;
-import org.atriasoft.ege.Light;
-import org.atriasoft.ege.Material;
+import org.atriasoft.ege.components.part.LightRender;
+import org.atriasoft.ege.components.part.MaterialRender;
+import org.atriasoft.ege.components.part.PositionningInterface;
+import org.atriasoft.ege.components.part.TransformRender;
 import org.atriasoft.ege.engines.EngineLight;
 import org.atriasoft.etk.Uri;
-import org.atriasoft.etk.math.Matrix4f;
-import org.atriasoft.etk.math.Vector3f;
 import org.atriasoft.gale.backend3d.OpenGL;
 import org.atriasoft.gale.resource.ResourceProgram;
 
 public class ComponentRenderTexturedMaterialsStaticMesh extends ComponentRender {
-	private static final int numberOfLight = 8;
-	private int GLambientFactor;
-	private int GLdiffuseFactor;
-	private GlLightIndex[] GLlights;
-	private int GLMatrixProjection;
-	private int GLMatrixTransformation;
-	private int GLMatrixView;
-	private int GLshininess;
-	private int GLspecularFactor;
-	EngineLight lightEngine;
-	ComponentMaterial material = null;
+	
 	ComponentStaticMesh mesh = null;
-	private ComponentPhysics playerPhysics = null;
-	ComponentPosition position = null;
 	ResourceProgram program = null;
 	ComponentTexture texture = null;
 	
+	LightRender renderLight = null;
+	MaterialRender renderMaterial = null;
+	TransformRender renderTransform = null;
+
+	public ComponentRenderTexturedMaterialsStaticMesh(final Uri vertexShader, final Uri fragmentShader) {
+		this(vertexShader, fragmentShader, null);
+	}
+	
 	public ComponentRenderTexturedMaterialsStaticMesh(final Uri vertexShader, final Uri fragmentShader, final EngineLight lightEngine) {
-		this.lightEngine = lightEngine;
+		if (lightEngine != null) {
+			this.renderLight = new LightRender(lightEngine);
+		}
+		this.renderTransform = new TransformRender();
+		this.renderMaterial = new MaterialRender();
 		this.program = ResourceProgram.create(vertexShader, fragmentShader);
 		if (this.program != null) {
-			this.GLMatrixTransformation = this.program.getUniform("in_matrixTransformation");
-			this.GLMatrixProjection = this.program.getUniform("in_matrixProjection");
-			this.GLMatrixView = this.program.getUniform("in_matrixView");
-			this.GLambientFactor = this.program.getUniform("in_material.ambientFactor");
-			this.GLdiffuseFactor = this.program.getUniform("in_material.diffuseFactor");
-			this.GLspecularFactor = this.program.getUniform("in_material.specularFactor");
-			this.GLshininess = this.program.getUniform("in_material.shininess");
-			this.GLlights = new GlLightIndex[ComponentRenderTexturedMaterialsStaticMesh.numberOfLight];
-			for (int iii = 0; iii < ComponentRenderTexturedMaterialsStaticMesh.numberOfLight; iii++) {
-				final int color = this.program.getUniform("in_lights[" + iii + "].color");
-				final int position = this.program.getUniform("in_lights[" + iii + "].position");
-				final int attenuation = this.program.getUniform("in_lights[" + iii + "].attenuation");
-				this.GLlights[iii] = new GlLightIndex(color, position, attenuation);
+			this.renderTransform.init(this.program);
+			if (this.renderLight != null) {
+				this.renderLight.init(this.program);
 			}
+			this.renderMaterial.init(this.program);
 		}
 		
 	}
 	
 	@Override
 	public void addFriendComponent(final Component component) {
-		if (component.getType().contentEquals("static-mesh")) {
-			this.mesh = (ComponentStaticMesh) component;
+		if (component instanceof ComponentStaticMesh refTyped) {
+			this.mesh = refTyped;
 		}
-		if (component.getType().contentEquals("texture")) {
-			this.texture = (ComponentTexture) component;
+		if (component instanceof ComponentTexture refTyped) {
+			this.texture = refTyped;
 		}
-		if (component.getType().contentEquals("material")) {
-			this.material = (ComponentMaterial) component;
+		if (component instanceof ComponentMaterial refTyped) {
+			this.renderMaterial.setMaterial(refTyped);
 		}
-		if (component.getType().contentEquals("position")) {
-			this.position = (ComponentPosition) component;
-		}
-		if (component.getType().contentEquals("physics")) {
-			this.playerPhysics = (ComponentPhysics) component;
+		if (component instanceof PositionningInterface refTyped) {
+			this.renderTransform.setPositionning(refTyped);
+			if (this.renderLight != null) {
+				this.renderLight.setPositionning(refTyped);
+			}
 		}
 	}
 	
@@ -76,49 +67,29 @@ public class ComponentRenderTexturedMaterialsStaticMesh extends ComponentRender
 	
 	@Override
 	public void render() {
+		// Select the program:
 		this.program.use();
-		Light[] lights = null;
-		Matrix4f transformationMatrix = null;
-		if (this.position != null) {
-			//Log.warning("position " + this.position.getTransform());
-			lights = this.lightEngine.getNearest(this.position.getTransform().getPosition());
-			transformationMatrix = this.position.getTransform().getOpenGLMatrix();
-		} else if (this.playerPhysics != null) {
-			//Log.warning("playerPosition " + this.playerPhysics.getTransform());
-			lights = this.lightEngine.getNearest(this.playerPhysics.getTransform().getPosition());
-			transformationMatrix = this.playerPhysics.getTransform().getOpenGLMatrix();
-		}
-		final Matrix4f projectionMatrix = OpenGL.getMatrix();
-		final Matrix4f viewMatrix = OpenGL.getCameraMatrix();
+		// Bind all the element for the rendering:
 		this.mesh.bindForRendering();
 		this.texture.bindForRendering();
-		
-		final Material mat = this.material.getMaterial();
-		this.program.uniformVector(this.GLambientFactor, mat.getAmbientFactor());
-		this.program.uniformVector(this.GLdiffuseFactor, mat.getDiffuseFactor());
-		this.program.uniformVector(this.GLspecularFactor, mat.getSpecularFactor());
-		this.program.uniformFloat(this.GLshininess, mat.getShininess());
-		for (int iii = 0; iii < ComponentRenderTexturedMaterialsStaticMesh.numberOfLight; iii++) {
-			if (lights[iii] != null) {
-				this.program.uniformVector(this.GLlights[iii].oGLposition, lights[iii].getPositionDelta());
-				this.program.uniformVector(this.GLlights[iii].oGLcolor, lights[iii].getColor());
-				this.program.uniformVector(this.GLlights[iii].oGLattenuation, lights[iii].getAttenuation());
-			} else {
-				this.program.uniformVector(this.GLlights[iii].oGLposition, Vector3f.ZERO);
-				this.program.uniformVector(this.GLlights[iii].oGLcolor, Vector3f.ZERO);
-				this.program.uniformVector(this.GLlights[iii].oGLattenuation, new Vector3f(1, 0, 0));
-			}
+		this.renderMaterial.bindForRendering(this.program);
+		if (this.renderLight != null) {
+			this.renderLight.bindForRendering(this.program);
 		}
-		this.program.uniformMatrix(this.GLMatrixView, viewMatrix);
-		this.program.uniformMatrix(this.GLMatrixProjection, projectionMatrix);
-		// Change the position for each element with the same pipeline you need to render ...
-		this.program.uniformMatrix(this.GLMatrixTransformation, transformationMatrix);
+		this.renderTransform.bindForRendering(this.program);
 		// update of flags is done asynchronously ==> need update before drawing...
 		OpenGL.updateAllFlags();
 		// Request the draw all the elements:
 		this.mesh.render();
+		// remove all element to render:
+		this.renderTransform.unBindForRendering();
+		if (this.renderLight != null) {
+			this.renderLight.unBindForRendering();
+		}
+		this.renderMaterial.unBindForRendering();
 		this.texture.unBindForRendering();
 		this.mesh.unBindForRendering();
+		// Disable program:
 		this.program.unUse();
 	}
 }
diff --git a/src/org/atriasoft/ege/components/ComponentRenderTexturedMaterialsStaticMeshs.java b/src/org/atriasoft/ege/components/ComponentRenderTexturedMaterialsStaticMeshs.java
index 5428e01..056e98a 100644
--- a/src/org/atriasoft/ege/components/ComponentRenderTexturedMaterialsStaticMeshs.java
+++ b/src/org/atriasoft/ege/components/ComponentRenderTexturedMaterialsStaticMeshs.java
@@ -3,112 +3,91 @@ package org.atriasoft.ege.components;
 import java.util.Set;
 
 import org.atriasoft.ege.Component;
-import org.atriasoft.ege.Light;
-import org.atriasoft.ege.Material;
+import org.atriasoft.ege.components.part.LightRender;
+import org.atriasoft.ege.components.part.MaterialsRender;
+import org.atriasoft.ege.components.part.PositionningInterface;
+import org.atriasoft.ege.components.part.TransformRender;
+import org.atriasoft.ege.engines.EngineLight;
 import org.atriasoft.etk.Uri;
-import org.atriasoft.etk.math.Matrix4f;
-import org.atriasoft.etk.math.Vector3f;
 import org.atriasoft.gale.backend3d.OpenGL;
 import org.atriasoft.gale.resource.ResourceProgram;
-import org.atriasoft.ege.engines.EngineLight;
 
 public class ComponentRenderTexturedMaterialsStaticMeshs extends ComponentRender {
-	private static final int numberOfLight = 8;
 	ComponentStaticMeshs meshs = null;
 	ComponentTextures textures = null;
 	ComponentMaterials materials = null;
-	ComponentPosition position = null;
 	ResourceProgram program = null;
-	EngineLight lightEngine;
-	private int GLMatrixTransformation;
-	private int GLMatrixProjection;
-	private int GLMatrixView;
-	private int GLambientFactor;
-	private int GLdiffuseFactor;
-	private int GLspecularFactor;
-	private int GLshininess;
-	private GlLightIndex[] GLlights;
+	LightRender renderLight = null;
+	MaterialsRender renderMaterials = null;
+	TransformRender renderTransform = null;
 	
-	public ComponentRenderTexturedMaterialsStaticMeshs(Uri vertexShader, Uri fragmentShader, EngineLight lightEngine) {
-		this.lightEngine = lightEngine;
+	public ComponentRenderTexturedMaterialsStaticMeshs(final Uri vertexShader, final Uri fragmentShader, final EngineLight lightEngine) {
+		if (lightEngine != null) {
+			this.renderLight = new LightRender(lightEngine);
+		}
+		this.renderTransform = new TransformRender();
+		this.renderMaterials = new MaterialsRender();
 		this.program = ResourceProgram.create(vertexShader, fragmentShader);
 		if (this.program != null) {
-			this.GLMatrixTransformation = this.program.getUniform("in_matrixTransformation");
-			this.GLMatrixProjection     = this.program.getUniform("in_matrixProjection");
-			this.GLMatrixView           = this.program.getUniform("in_matrixView");
-			this.GLambientFactor        = this.program.getUniform("in_material.ambientFactor");
-			this.GLdiffuseFactor        = this.program.getUniform("in_material.diffuseFactor");
-			this.GLspecularFactor       = this.program.getUniform("in_material.specularFactor");
-			this.GLshininess            = this.program.getUniform("in_material.shininess");
-			this.GLlights = new GlLightIndex[numberOfLight];
-			for (int iii=0; iii<numberOfLight; iii++) {
-				int color       = this.program.getUniform("in_lights[" + iii + "].color");
-				int position    = this.program.getUniform("in_lights[" + iii + "].position");
-				int attenuation = this.program.getUniform("in_lights[" + iii + "].attenuation");
-				this.GLlights[iii] = new GlLightIndex(color, position, attenuation);
+			this.renderTransform.init(this.program);
+			if (this.renderLight != null) {
+				this.renderLight.init(this.program);
 			}
+			this.renderMaterials.init(this.program);
 		}
 		
 	}
 	@Override
-	public void addFriendComponent(Component component) {
-		if (component.getType().contentEquals("static-meshs")) {
-			meshs = (ComponentStaticMeshs)component;
+	public void addFriendComponent(final Component component) {
+		if (component instanceof ComponentStaticMeshs refTyped) {
+			this.meshs = refTyped;
 		}
-		if (component.getType().contentEquals("textures")) {
-			textures = (ComponentTextures)component;
+		if (component instanceof ComponentTextures refTyped) {
+			this.textures = refTyped;
 		}
-		if (component.getType().contentEquals("materials")) {
-			materials = (ComponentMaterials)component;
+		if (component instanceof ComponentMaterials refTyped) {
+			this.renderMaterials.setMaterial(refTyped);
 		}
-		if (component.getType().contentEquals("position")) {
-			position = (ComponentPosition)component;
+		if (component instanceof PositionningInterface refTyped) {
+			this.renderTransform.setPositionning(refTyped);
+			if (this.renderLight != null) {
+				this.renderLight.setPositionning(refTyped);
+			}
 		}
 	}
 	@Override
-	public void removeFriendComponent(Component component) {
+	public void removeFriendComponent(final Component component) {
 		// nothing to do.
 	}
 	@Override
 	public void render() {
+		// Select the program:
 		this.program.use();
-		Light[] lights = this.lightEngine.getNearest(position.getTransform().getPosition());
-		Matrix4f projectionMatrix = OpenGL.getMatrix();
-		Matrix4f viewMatrix = OpenGL.getCameraMatrix();
-		Matrix4f transformationMatrix = position.getTransform().getOpenGLMatrix();
-		Set<String> keys = this.meshs.getKeys();
-		
-		for (int iii=0; iii<numberOfLight; iii++) {
-			if (lights[iii] != null) {
-				this.program.uniformVector(this.GLlights[iii].oGLposition, lights[iii].getPositionDelta());
-				this.program.uniformVector(this.GLlights[iii].oGLcolor, lights[iii].getColor());
-				this.program.uniformVector(this.GLlights[iii].oGLattenuation, lights[iii].getAttenuation());
-			} else {
-				this.program.uniformVector(this.GLlights[iii].oGLposition, new Vector3f(0,0,0));
-				this.program.uniformVector(this.GLlights[iii].oGLcolor, new Vector3f(0,0,0));
-				this.program.uniformVector(this.GLlights[iii].oGLattenuation, new Vector3f(1,0,0));
-			}
+		// Bind all the element for the rendering:
+		if (this.renderLight != null) {
+			this.renderLight.bindForRendering(this.program);
 		}
-		this.program.uniformMatrix(this.GLMatrixView, viewMatrix);
-		this.program.uniformMatrix(this.GLMatrixProjection, projectionMatrix);
-		// Change the position for each element with the same pipeline you need to render ...
-		this.program.uniformMatrix(this.GLMatrixTransformation, transformationMatrix);
+		this.renderTransform.bindForRendering(this.program);
+		Set<String> keys = this.meshs.getKeys();
 		
 		for (String key : keys) {
 			this.meshs.bindForRendering(key);
 			this.textures.bindForRendering(key);
-			Material mat = this.materials.getMaterial(key);
-			this.program.uniformVector(GLambientFactor, mat.getAmbientFactor());
-			this.program.uniformVector(GLdiffuseFactor, mat.getDiffuseFactor());
-			this.program.uniformVector(GLspecularFactor, mat.getSpecularFactor());
-			this.program.uniformFloat(GLshininess, mat.getShininess());
+			this.renderMaterials.bindForRendering(this.program, key);
 			// update of flags is done asynchronously ==> need update before drawing...
 			OpenGL.updateAllFlags();
 			// Request the draw all the elements:
 			this.meshs.render(key);
+			// remove all element to render:
+			this.renderMaterials.unBindForRendering();
 			this.textures.unBindForRendering(key);
 			this.meshs.unBindForRendering(key);
 		}
+		// remove all element to render:
+		this.renderTransform.unBindForRendering();
+		if (this.renderLight != null) {
+			this.renderLight.unBindForRendering();
+		}
 		this.program.unUse();
 	}
 }
diff --git a/src/org/atriasoft/ege/components/ComponentRenderTexturedStaticMesh.java b/src/org/atriasoft/ege/components/ComponentRenderTexturedStaticMesh.java
index ef198a0..22071d8 100644
--- a/src/org/atriasoft/ege/components/ComponentRenderTexturedStaticMesh.java
+++ b/src/org/atriasoft/ege/components/ComponentRenderTexturedStaticMesh.java
@@ -1,44 +1,40 @@
 package org.atriasoft.ege.components;
 
 import org.atriasoft.ege.Component;
+import org.atriasoft.ege.components.part.PositionningInterface;
+import org.atriasoft.ege.components.part.TransformRender;
 import org.atriasoft.etk.Uri;
-import org.atriasoft.etk.math.Matrix4f;
 import org.atriasoft.gale.backend3d.OpenGL;
 import org.atriasoft.gale.resource.ResourceProgram;
 
 public class ComponentRenderTexturedStaticMesh extends ComponentRender {
-	private int GLMatrixProjection;
-	private int GLMatrixTransformation;
-	private int GLMatrixView;
 	ComponentStaticMesh mesh = null;
-	private ComponentPhysics playerPhysics = null;
+	private final ComponentPhysics playerPhysics = null;
 	ComponentPosition position = null;
 	ResourceProgram program = null;
 	ComponentTexture texture = null;
 	
+	TransformRender renderTransform = null;
+	
 	public ComponentRenderTexturedStaticMesh(final Uri vertexShader, final Uri fragmentShader) {
+		this.renderTransform = new TransformRender();
 		this.program = ResourceProgram.create(vertexShader, fragmentShader);
 		if (this.program != null) {
-			this.GLMatrixTransformation = this.program.getUniform("in_matrixTransformation");
-			this.GLMatrixProjection = this.program.getUniform("in_matrixProjection");
-			this.GLMatrixView = this.program.getUniform("in_matrixView");
+			this.renderTransform.init(this.program);
 		}
 		
 	}
 	
 	@Override
 	public void addFriendComponent(final Component component) {
-		if (component.getType().contentEquals("static-mesh")) {
-			this.mesh = (ComponentStaticMesh) component;
+		if (component instanceof ComponentStaticMesh refTyped) {
+			this.mesh = refTyped;
 		}
-		if (component.getType().contentEquals("texture")) {
-			this.texture = (ComponentTexture) component;
+		if (component instanceof ComponentTexture refTyped) {
+			this.texture = refTyped;
 		}
-		if (component.getType().contentEquals("position")) {
-			this.position = (ComponentPosition) component;
-		}
-		if (component.getType().contentEquals("physics")) {
-			this.playerPhysics = (ComponentPhysics) component;
+		if (component instanceof PositionningInterface refTyped) {
+			this.renderTransform.setPositionning(refTyped);
 		}
 	}
 	
@@ -49,27 +45,18 @@ public class ComponentRenderTexturedStaticMesh extends ComponentRender {
 	
 	@Override
 	public void render() {
+		// Select the program:
 		this.program.use();
-		final Matrix4f projectionMatrix = OpenGL.getMatrix();
-		final Matrix4f viewMatrix = OpenGL.getCameraMatrix();
-		Matrix4f transformationMatrix = null;
-		if (this.position != null) {
-			//Log.warning("position " + this.position.getTransform());
-			transformationMatrix = this.position.getTransform().getOpenGLMatrix();
-		} else if (this.playerPhysics != null) {
-			//Log.warning("playerPosition " + this.playerPhysics.getTransform());
-			transformationMatrix = this.playerPhysics.getTransform().getOpenGLMatrix();
-		}
+		// Bind all the element for the rendering:
 		this.mesh.bindForRendering();
 		this.texture.bindForRendering();
-		this.program.uniformMatrix(this.GLMatrixView, viewMatrix);
-		this.program.uniformMatrix(this.GLMatrixProjection, projectionMatrix);
-		// Change the position for each element with the same pipeline you need to render ...
-		this.program.uniformMatrix(this.GLMatrixTransformation, transformationMatrix);
+		this.renderTransform.bindForRendering(this.program);	
 		// update of flags is done asynchronously ==> need update before drawing...
 		OpenGL.updateAllFlags();
 		// Request the draw all the elements:
 		this.mesh.render();
+		// remove all element to render:
+		this.renderTransform.unBindForRendering();
 		this.texture.unBindForRendering();
 		this.mesh.unBindForRendering();
 		this.program.unUse();
diff --git a/src/org/atriasoft/ege/components/ComponentTexturePalette.java b/src/org/atriasoft/ege/components/ComponentTexturePalette.java
index a1294b7..a9dd74b 100644
--- a/src/org/atriasoft/ege/components/ComponentTexturePalette.java
+++ b/src/org/atriasoft/ege/components/ComponentTexturePalette.java
@@ -1,14 +1,10 @@
 package org.atriasoft.ege.components;
 
-import java.awt.Image;
-
 import org.atriasoft.egami.ImageByte;
-import org.atriasoft.egami.ToolImage;
 import org.atriasoft.ege.Component;
 import org.atriasoft.ege.internal.Log;
 import org.atriasoft.etk.Uri;
 import org.atriasoft.gale.resource.ResourceTexture2;
-import org.atriasoft.iogami.IOgami;
 import org.atriasoft.loader3d.resources.ResourcePaletteFile;
 
 public class ComponentTexturePalette extends Component {
@@ -16,7 +12,7 @@ public class ComponentTexturePalette extends Component {
 	private final ResourcePaletteFile palette;
 	private final ResourceTexture2 texture;
 	
-	public ComponentTexturePalette(Uri paletteName) {
+	public ComponentTexturePalette(final Uri paletteName) {
 		this.palette = ResourcePaletteFile.create(paletteName);
 		this.texture = ResourceTexture2.createNamed("TEXTURE_OF_PALETTE:" + paletteName.toString());
 		if (this.texture == null) {
@@ -33,7 +29,7 @@ public class ComponentTexturePalette extends Component {
 	public void updateFromPalette() {
 		Log.warning("update palet environnement");
 		final ImageByte img = this.palette.getImageByte();
-		IOgami.storePNG(new Uri("/home/heero/000000000aaaaplopppp.png"), img);
+		//IOgami.storePNG(new Uri("/home/heero/000000000aaaaplopppp.png"), img);
 		this.texture.set(img);
 	}
 	
diff --git a/src/org/atriasoft/ege/components/GlLightIndex.java b/src/org/atriasoft/ege/components/GlLightIndex.java
index 10e41ca..f320b73 100644
--- a/src/org/atriasoft/ege/components/GlLightIndex.java
+++ b/src/org/atriasoft/ege/components/GlLightIndex.java
@@ -1,9 +1,9 @@
 package org.atriasoft.ege.components;
 
 public class GlLightIndex {
-	int oGLcolor;
-	int oGLposition;
-	int oGLattenuation;
+	public int oGLcolor;
+	public int oGLposition;
+	public int oGLattenuation;
 	public GlLightIndex(int gLcolor, int gLposition, int gLattenuation) {
 		oGLcolor = gLcolor;
 		oGLposition = gLposition;
diff --git a/src/org/atriasoft/ege/components/part/LightRender.java b/src/org/atriasoft/ege/components/part/LightRender.java
new file mode 100644
index 0000000..99c70cb
--- /dev/null
+++ b/src/org/atriasoft/ege/components/part/LightRender.java
@@ -0,0 +1,59 @@
+package org.atriasoft.ege.components.part;
+
+import org.atriasoft.ege.Light;
+import org.atriasoft.ege.components.GlLightIndex;
+import org.atriasoft.ege.engines.EngineLight;
+import org.atriasoft.etk.math.Vector3f;
+import org.atriasoft.gale.resource.ResourceProgram;
+
+public class LightRender implements PartRenderInterface {
+
+	private static final int numberOfLight = 8;
+	private GlLightIndex[] GLlights;
+	EngineLight lightEngine;
+	PositionningInterface position = null;
+	
+	public LightRender(final EngineLight lightEngine) {
+		this.lightEngine = lightEngine;
+	}
+
+	@Override
+	public void init(final ResourceProgram program) {
+		this.GLlights = new GlLightIndex[LightRender.numberOfLight];
+		for (int iii = 0; iii < LightRender.numberOfLight; iii++) {
+			final int color = program.getUniform("in_lights[" + iii + "].color");
+			final int position = program.getUniform("in_lights[" + iii + "].position");
+			final int attenuation = program.getUniform("in_lights[" + iii + "].attenuation");
+			this.GLlights[iii] = new GlLightIndex(color, position, attenuation);
+		}
+	}
+
+	@Override
+	public void bindForRendering(final ResourceProgram program) {
+		// preparing stage
+		Vector3f positionObject = this.position.getTransform().getPosition();
+		Light[] lights = this.lightEngine.getNearest(positionObject);
+		// injection stage
+		for (int iii = 0; iii < LightRender.numberOfLight; iii++) {
+			if (lights[iii] != null) {
+				//Log.warning("Set light : [" + iii + "] " + lights[iii]);
+				program.uniformVector(this.GLlights[iii].oGLposition, lights[iii].getPositionDelta());
+				program.uniformColorRGB(this.GLlights[iii].oGLcolor, lights[iii].getColor());
+				program.uniformVector(this.GLlights[iii].oGLattenuation, lights[iii].getAttenuation());
+			} else {
+				program.uniformVector(this.GLlights[iii].oGLposition, Vector3f.ZERO);
+				program.uniformVector(this.GLlights[iii].oGLcolor, Vector3f.ZERO);
+				//program.uniformColorRGB(this.GLlights[iii].oGLcolor, Color.NONE);
+				program.uniformVector(this.GLlights[iii].oGLattenuation, new Vector3f(1, 0, 0));
+			}
+		}
+	}
+	@Override
+	public void unBindForRendering() {
+		
+	}
+
+	public void setPositionning(final PositionningInterface component) {
+		this.position = component;
+	}
+}
diff --git a/src/org/atriasoft/ege/components/part/MaterialRender.java b/src/org/atriasoft/ege/components/part/MaterialRender.java
new file mode 100644
index 0000000..6472e80
--- /dev/null
+++ b/src/org/atriasoft/ege/components/part/MaterialRender.java
@@ -0,0 +1,19 @@
+package org.atriasoft.ege.components.part;
+
+import org.atriasoft.ege.components.ComponentMaterial;
+import org.atriasoft.gale.resource.ResourceProgram;
+
+public class MaterialRender extends MaterialRenderBase {
+
+	ComponentMaterial material = null;
+
+	@Override
+	public void bindForRendering(final ResourceProgram program) {
+		bindForRendering(program, this.material.getMaterial());
+	}
+	
+	public void setMaterial(final ComponentMaterial component) {
+		this.material = component;
+	}
+
+}
diff --git a/src/org/atriasoft/ege/components/part/MaterialRenderBase.java b/src/org/atriasoft/ege/components/part/MaterialRenderBase.java
new file mode 100644
index 0000000..3d9ea2b
--- /dev/null
+++ b/src/org/atriasoft/ege/components/part/MaterialRenderBase.java
@@ -0,0 +1,36 @@
+package org.atriasoft.ege.components.part;
+
+import org.atriasoft.ege.Material;
+import org.atriasoft.gale.resource.ResourceProgram;
+
+public abstract class MaterialRenderBase implements PartRenderInterface {
+
+	protected int GLambientFactor;
+	protected int GLdiffuseFactor;
+	protected int GLshininess;
+	protected int GLspecularFactor;
+	
+	public MaterialRenderBase() {
+		
+	}
+
+	@Override
+	public void init(final ResourceProgram program) {
+		this.GLambientFactor = program.getUniform("in_material.ambientFactor");
+		this.GLdiffuseFactor = program.getUniform("in_material.diffuseFactor");
+		this.GLspecularFactor = program.getUniform("in_material.specularFactor");
+		this.GLshininess = program.getUniform("in_material.shininess");
+	}
+
+	public void bindForRendering(final ResourceProgram program, final Material mat) {
+		program.uniformVector(this.GLambientFactor, mat.getAmbientFactor());
+		program.uniformVector(this.GLdiffuseFactor, mat.getDiffuseFactor());
+		program.uniformVector(this.GLspecularFactor, mat.getSpecularFactor());
+		program.uniformFloat(this.GLshininess, mat.getShininess());
+	}
+
+	@Override
+	public void unBindForRendering() {
+	
+	}
+}
diff --git a/src/org/atriasoft/ege/components/part/MaterialsRender.java b/src/org/atriasoft/ege/components/part/MaterialsRender.java
new file mode 100644
index 0000000..15544d1
--- /dev/null
+++ b/src/org/atriasoft/ege/components/part/MaterialsRender.java
@@ -0,0 +1,23 @@
+package org.atriasoft.ege.components.part;
+
+import org.atriasoft.ege.components.ComponentMaterials;
+import org.atriasoft.gale.resource.ResourceProgram;
+
+public class MaterialsRender extends MaterialRenderBase {
+
+	ComponentMaterials material = null;
+	
+	public void bindForRendering(final ResourceProgram program, final String type) {
+		bindForRendering(program, this.material.getMaterial(type));
+	}
+	
+	@Override
+	public void bindForRendering(final ResourceProgram program) {
+		bindForRendering(program, this.material.getMaterial("default"));
+	}
+	
+
+	public void setMaterial(final ComponentMaterials component) {
+		this.material = component;
+	}
+}
diff --git a/src/org/atriasoft/ege/components/part/PartRenderInterface.java b/src/org/atriasoft/ege/components/part/PartRenderInterface.java
new file mode 100644
index 0000000..7c252e1
--- /dev/null
+++ b/src/org/atriasoft/ege/components/part/PartRenderInterface.java
@@ -0,0 +1,24 @@
+package org.atriasoft.ege.components.part;
+
+import org.atriasoft.gale.resource.ResourceProgram;
+
+/**
+ * Element that permit to add prat element on the Shader rendering (permit to reduce code and normalize IO naming of the shader
+ */
+public interface PartRenderInterface {
+	/**
+	 * Initialize the render part with the program elements
+	 * @param program Open GL program
+	 */
+	void init(final ResourceProgram program);
+	/**
+	 * Bing this part in the shader 
+	 * @param program Program that manage the rendering
+	 */
+	void bindForRendering(final ResourceProgram program);
+	/**
+	 * Remove element from the shader.
+	 */
+	void unBindForRendering();
+
+}
diff --git a/src/org/atriasoft/ege/components/part/PositionningInterface.java b/src/org/atriasoft/ege/components/part/PositionningInterface.java
new file mode 100644
index 0000000..c08adfe
--- /dev/null
+++ b/src/org/atriasoft/ege/components/part/PositionningInterface.java
@@ -0,0 +1,11 @@
+package org.atriasoft.ege.components.part;
+
+import org.atriasoft.etk.math.Transform3D;
+
+public interface PositionningInterface {
+	/**
+	 * Get the current positionning on an object
+	 * @return
+	 */
+	Transform3D getTransform();
+}
diff --git a/src/org/atriasoft/ege/components/part/TransformRender.java b/src/org/atriasoft/ege/components/part/TransformRender.java
new file mode 100644
index 0000000..67f45c2
--- /dev/null
+++ b/src/org/atriasoft/ege/components/part/TransformRender.java
@@ -0,0 +1,47 @@
+package org.atriasoft.ege.components.part;
+
+import org.atriasoft.etk.math.Matrix4f;
+import org.atriasoft.gale.backend3d.OpenGL;
+import org.atriasoft.gale.resource.ResourceProgram;
+
+public class TransformRender implements PartRenderInterface {
+
+	private int GLMatrixProjection;
+	private int GLMatrixTransformation;
+	private int GLMatrixView;
+	private PositionningInterface position = null;
+	
+	public TransformRender() {
+		
+	}
+
+	@Override
+	public void init(final ResourceProgram program) {
+		this.GLMatrixTransformation = program.getUniform("in_matrixTransformation");
+		this.GLMatrixProjection = program.getUniform("in_matrixProjection");
+		this.GLMatrixView = program.getUniform("in_matrixView");
+	}
+
+	@Override
+	public void bindForRendering(final ResourceProgram program) {
+		// preparing stage
+		final Matrix4f projectionMatrix = OpenGL.getMatrix();
+		final Matrix4f viewMatrix = OpenGL.getCameraMatrix();
+		Matrix4f transformationMatrix = this.position.getTransform().getOpenGLMatrix();
+		// injection stage
+		program.uniformMatrix(this.GLMatrixView, viewMatrix);
+		program.uniformMatrix(this.GLMatrixProjection, projectionMatrix);
+		// Change the position for each element with the same pipeline you need to render ...
+		program.uniformMatrix(this.GLMatrixTransformation, transformationMatrix);
+	}
+
+	
+	@Override
+	public void unBindForRendering() {
+	
+	}
+	
+	public void setPositionning(final PositionningInterface component) {
+		this.position = component;
+	}
+}
diff --git a/src/org/atriasoft/ege/engines/EngineLight.java b/src/org/atriasoft/ege/engines/EngineLight.java
index 46088b7..f549669 100644
--- a/src/org/atriasoft/ege/engines/EngineLight.java
+++ b/src/org/atriasoft/ege/engines/EngineLight.java
@@ -6,70 +6,73 @@ import org.atriasoft.ege.Component;
 import org.atriasoft.ege.Engine;
 import org.atriasoft.ege.Environement;
 import org.atriasoft.ege.Light;
-import org.atriasoft.etk.math.Vector3f;
-import org.atriasoft.ege.internal.Log;
 import org.atriasoft.ege.camera.Camera;
-import org.atriasoft.ege.components.ComponentAI;
 import org.atriasoft.ege.components.ComponentLight;
 import org.atriasoft.ege.components.ComponentLightSun;
+import org.atriasoft.ege.internal.Log;
+import org.atriasoft.etk.math.Vector3f;
 
 public class EngineLight extends Engine {
 	public static final String ENGINE_NAME = "light";
-	private Vector<ComponentLight> componentLights = new Vector<ComponentLight>();
-	private Vector<ComponentLightSun> componentSuns = new Vector<ComponentLightSun>();
-	public EngineLight(Environement env) {
+	private final Vector<ComponentLight> componentLights = new Vector<ComponentLight>();
+	private final Vector<ComponentLightSun> componentSuns = new Vector<ComponentLightSun>();
+	public EngineLight(final Environement env) {
 		super(env);
 		// TODO Auto-generated constructor stub
 	}
 
 	@Override
-	public void componentRemove(Component ref) {
-		componentLights.remove(ref);
-		componentSuns.remove(ref);
+	public void componentRemove(final Component ref) {
+		this.componentLights.remove(ref);
+		this.componentSuns.remove(ref);
 	}
 
 	@Override
-	public void componentAdd(Component ref) {
-		if (ref instanceof ComponentLightSun == true) {
-			componentSuns.add((ComponentLightSun)ref);
+	public void componentAdd(final Component ref) {
+		if (ref instanceof ComponentLightSun refTyped) {
+			this.componentSuns.add(refTyped);
 			return;
 		}
-		if (ref instanceof ComponentLight == true) {
-			componentLights.add((ComponentLight)ref);
-			return;
+		if (ref instanceof ComponentLight refTyped) {
+			this.componentLights.add(refTyped);
 		}
 	}
 
 	@Override
-	public void update(long deltaMili) {
+	public void update(final long deltaMili) {
 		// nothing to do ...
 	}
 
 	@Override
-	public void render(long deltaMili, Camera camera) {
+	public void render(final long deltaMili, final Camera camera) {
 		// nothing to do ...
 	}
 
 	@Override
-	public void renderDebug(long deltaMili, Camera camera) {
+	public void renderDebug(final long deltaMili, final Camera camera) {
 		// nothing to do ...
 	}
 
 	@Override
 	public String getType() {
 		// TODO Auto-generated method stub
-		return ENGINE_NAME;
+		return EngineLight.ENGINE_NAME;
 	}
 
-	public Light[] getNearest(Vector3f position) {
+	public Light[] getNearest(final Vector3f position) {
 		Light[] out = new Light[8];
 		int count = 0;
-		for (ComponentLightSun elem: componentSuns) {
+		for (ComponentLightSun elem: this.componentSuns) {
 			out[count] = new Light(elem.getLight().getColor(), elem.getPosition(), elem.getLight().getAttenuation());
+			if (count>=8) {
+				Log.error("need to update ligth count");
+				return out;
+			}
 			count++;
 		}
+		//Log.warning("Get " + count + "/" + out.length + " lights (SUN) ...");
 		float maxDistance = 50*50;
-		for (ComponentLight elem: componentLights) {
+		for (ComponentLight elem: this.componentLights) {
 			Vector3f pos = elem.getPosition();
 			if (count>=8) {
 				Log.error("need to update ligth count");
@@ -80,6 +83,7 @@ public class EngineLight extends Engine {
 				count++;
 			}
 		}
+		//Log.warning("Get " + count + "/" + out.length + " lights...");
 		return out;
 	}