1 files changed, 12 insertions, 2 deletions
diff --git a/src/jogl/classes/com/jogamp/opengl/util/texture/ImageSequence.java b/src/jogl/classes/com/jogamp/opengl/util/texture/ImageSequence.java
index 2da2dcbfc..99704ced0 100644
--- a/src/jogl/classes/com/jogamp/opengl/util/texture/ImageSequence.java
+++ b/src/jogl/classes/com/jogamp/opengl/util/texture/ImageSequence.java
@@ -159,6 +159,7 @@ public class ImageSequence implements TextureSequence {
         } else if(null != texLookupFuncName && texLookupFuncName.length()>0) {
             textureLookupFunctionName = texLookupFuncName;
         }
+        textureFragmentShaderHashCode = 0;
         return textureLookupFunctionName;
     }
 
@@ -180,13 +181,22 @@ public class ImageSequence implements TextureSequence {
     }
 
     @Override
+    public String getTextureFragmentShaderHashID() {
+        // return getTextureSampler2DType()+";"+getTextureLookupFunctionName()+";"+getTextureLookupFragmentShaderImpl();
+        if( useBuildInTexLookup ) {
+            return getTextureSampler2DType()+";"+getTextureLookupFunctionName();
+        } else {
+            return getTextureLookupFragmentShaderImpl();
+        }
+    }
+
+    @Override
     public int getTextureFragmentShaderHashCode() {
         if( !isTextureAvailable() ) {
             textureFragmentShaderHashCode = 0;
             return 0;
         } else if( 0 == textureFragmentShaderHashCode ) {
-            int hash = 31 + getTextureLookupFragmentShaderImpl().hashCode();
-            hash = ((hash << 5) - hash) + getTextureSampler2DType().hashCode();
+            final int hash = getTextureFragmentShaderHashID().hashCode();
             textureFragmentShaderHashCode = hash;
         }
         return textureFragmentShaderHashCode;