diff --git a/jme3-core/src/main/java/com/jme3/collision/bih/BIHTree.java b/jme3-core/src/main/java/com/jme3/collision/bih/BIHTree.java
index 38a633e96..5db94b409 100644
--- a/jme3-core/src/main/java/com/jme3/collision/bih/BIHTree.java
+++ b/jme3-core/src/main/java/com/jme3/collision/bih/BIHTree.java
@@ -48,6 +48,7 @@ import com.jme3.math.Vector3f;
 import com.jme3.scene.CollisionData;
 import com.jme3.scene.Mesh;
 import com.jme3.scene.Mesh.Mode;
+import com.jme3.scene.VertexBuffer;
 import com.jme3.scene.VertexBuffer.Type;
 import com.jme3.scene.mesh.IndexBuffer;
 import com.jme3.scene.mesh.VirtualIndexBuffer;
@@ -114,8 +115,13 @@ public class BIHTree implements CollisionData {
 
         bihSwapTmp = new float[9];
 
-        FloatBuffer vb = (FloatBuffer) mesh.getBuffer(Type.Position).getData();
+        VertexBuffer vBuffer = mesh.getBuffer(Type.Position);
+        if(vBuffer == null){
+            throw new IllegalArgumentException("A mesh should at least contain a Position buffer");
+        }        
         IndexBuffer ib = mesh.getIndexBuffer();
+        FloatBuffer vb = (FloatBuffer) vBuffer.getData();
+        
         if (ib == null) {
             ib = new VirtualIndexBuffer(mesh.getVertexCount(), mesh.getMode());
         } else if (mesh.getMode() != Mode.Triangles) {
diff --git a/jme3-core/src/main/java/com/jme3/renderer/opengl/GLRenderer.java b/jme3-core/src/main/java/com/jme3/renderer/opengl/GLRenderer.java
index 729f4e203..6d4e4abba 100644
--- a/jme3-core/src/main/java/com/jme3/renderer/opengl/GLRenderer.java
+++ b/jme3-core/src/main/java/com/jme3/renderer/opengl/GLRenderer.java
@@ -401,7 +401,7 @@ public class GLRenderer implements Renderer {
                 }
             }
 
-            if (hasExtension("GL_ARB_draw_buffers")) {
+            if (hasExtension("GL_ARB_draw_buffers") || gl3 != null) {
                 limits.put(Limits.FrameBufferMrtAttachments, getInteger(GLExt.GL_MAX_DRAW_BUFFERS_ARB));
                 if (limits.get(Limits.FrameBufferMrtAttachments) > 1) {
                     caps.add(Caps.FrameBufferMRT);
@@ -1080,6 +1080,7 @@ public class GLRenderer implements Renderer {
         if (linearizeSrgbImages) {
             stringBuf.append("#define SRGB 1\n");
         }
+        stringBuf.append("#define ").append(source.getType().name().toUpperCase()).append("_SHADER 1\n");
 
         stringBuf.append(source.getDefines());
         stringBuf.append(source.getSource());
diff --git a/jme3-core/src/main/java/com/jme3/renderer/opengl/TextureUtil.java b/jme3-core/src/main/java/com/jme3/renderer/opengl/TextureUtil.java
index a2f21ceaa..fb6032393 100644
--- a/jme3-core/src/main/java/com/jme3/renderer/opengl/TextureUtil.java
+++ b/jme3-core/src/main/java/com/jme3/renderer/opengl/TextureUtil.java
@@ -90,9 +90,11 @@ final class TextureUtil {
     }
 
     public GLImageFormat getImageFormatWithError(Format fmt, boolean isSrgb) {
+        //if the passed format is one kind of depth there isno point in getting the srgb format;
+        isSrgb = isSrgb && fmt != Format.Depth && fmt != Format.Depth16 && fmt != Format.Depth24 && fmt != Format.Depth24Stencil8 && fmt != Format.Depth32 && fmt != Format.Depth32F;
         GLImageFormat glFmt = getImageFormat(fmt, isSrgb);
         if (glFmt == null && isSrgb) {
-            glFmt = getImageFormat(fmt, false);
+            glFmt = getImageFormat(fmt, false);               
             logger.log(Level.WARNING, "No sRGB format available for ''{0}''. Failling back to linear.", fmt);
         }
         if (glFmt == null) { 
diff --git a/jme3-core/src/main/resources/Common/MatDefs/Misc/Unshaded.frag b/jme3-core/src/main/resources/Common/MatDefs/Misc/Unshaded.frag
index ce8219b6e..73df8d740 100644
--- a/jme3-core/src/main/resources/Common/MatDefs/Misc/Unshaded.frag
+++ b/jme3-core/src/main/resources/Common/MatDefs/Misc/Unshaded.frag
@@ -1,3 +1,5 @@
+#import "Common/ShaderLib/GLSL150Compat.glsllib"
+
 #if defined(HAS_GLOWMAP) || defined(HAS_COLORMAP) || (defined(HAS_LIGHTMAP) && !defined(SEPARATE_TEXCOORD))
     #define NEED_TEXCOORD1
 #endif
diff --git a/jme3-core/src/main/resources/Common/MatDefs/Misc/Unshaded.j3md b/jme3-core/src/main/resources/Common/MatDefs/Misc/Unshaded.j3md
index aee284705..8dd6fc5ca 100644
--- a/jme3-core/src/main/resources/Common/MatDefs/Misc/Unshaded.j3md
+++ b/jme3-core/src/main/resources/Common/MatDefs/Misc/Unshaded.j3md
@@ -13,7 +13,7 @@ MaterialDef Unshaded {
         Color GlowColor
 
         // For instancing
-	Boolean UseInstancing
+        Boolean UseInstancing
 
         // For hardware skinning
         Int NumberOfBones
@@ -54,8 +54,8 @@ MaterialDef Unshaded {
     }
 
     Technique {
-        VertexShader GLSL100:   Common/MatDefs/Misc/Unshaded.vert
-        FragmentShader GLSL100: Common/MatDefs/Misc/Unshaded.frag
+        VertexShader GLSL150:   Common/MatDefs/Misc/Unshaded.vert
+        FragmentShader GLSL150: Common/MatDefs/Misc/Unshaded.frag
 
         WorldParameters {
             WorldViewProjectionMatrix
@@ -76,6 +76,25 @@ MaterialDef Unshaded {
     }
 
     Technique {
+        VertexShader GLSL100:   Common/MatDefs/Misc/Unshaded.vert
+        FragmentShader GLSL100: Common/MatDefs/Misc/Unshaded.frag
+
+        WorldParameters {
+            WorldViewProjectionMatrix
+            ViewProjectionMatrix
+            ViewMatrix
+        }
+
+        Defines {
+            INSTANCING : UseInstancing
+            SEPARATE_TEXCOORD : SeparateTexCoord
+            HAS_COLORMAP : ColorMap
+            HAS_LIGHTMAP : LightMap
+            HAS_VERTEXCOLOR : VertexColor
+            HAS_COLOR : Color
+            NUM_BONES : NumberOfBones
+            DISCARD_ALPHA : AlphaDiscardThreshold
+        }
     }
 
     Technique PreNormalPass {
diff --git a/jme3-core/src/main/resources/Common/MatDefs/Misc/Unshaded.vert b/jme3-core/src/main/resources/Common/MatDefs/Misc/Unshaded.vert
index 63b05ef88..454708d92 100644
--- a/jme3-core/src/main/resources/Common/MatDefs/Misc/Unshaded.vert
+++ b/jme3-core/src/main/resources/Common/MatDefs/Misc/Unshaded.vert
@@ -1,3 +1,4 @@
+#import "Common/ShaderLib/GLSL150Compat.glsllib"
 #import "Common/ShaderLib/Skinning.glsllib"
 #import "Common/ShaderLib/Instancing.glsllib"
 
diff --git a/jme3-core/src/main/resources/Common/ShaderLib/GLSL150Compat.glsllib b/jme3-core/src/main/resources/Common/ShaderLib/GLSL150Compat.glsllib
index 336490696..87f07a3f5 100644
--- a/jme3-core/src/main/resources/Common/ShaderLib/GLSL150Compat.glsllib
+++ b/jme3-core/src/main/resources/Common/ShaderLib/GLSL150Compat.glsllib
@@ -1,4 +1,4 @@
-#if _VERSION_ >= 150
+#if __VERSION__ >= 130
 out vec4 outFragColor;
 #  define texture1D texture
 #  define texture2D texture