2 files changed, 5 insertions, 2 deletions
diff --git a/src/jogl/classes/com/jogamp/graph/curve/Region.java b/src/jogl/classes/com/jogamp/graph/curve/Region.java
index 3ae5ef9d2..37ae9fc99 100644
--- a/src/jogl/classes/com/jogamp/graph/curve/Region.java
+++ b/src/jogl/classes/com/jogamp/graph/curve/Region.java
@@ -680,9 +680,10 @@ public abstract class Region {
         return 0 != ( dirty & DIRTY_SHAPE ) ;
     }
     /**
-     * Mark this region's render-state dirty, i.e. enforce rendering the region into the FBO in 2-pass mode.
+     * Mark this region's render-state dirty, i.e. re-selecting a shader program regarding color-texture and -channel,
+     * and rendering the region into the FBO in 2-pass mode.
      * <p>
-     * In 1-pass mode, this state has no effect since the region is always rendered to the current write-drawable.
+     * In 1-pass mode, re-selection of the shader-program is based on color-texture and -channel only.
      * </p>
      */
     public final void markStateDirty() {
diff --git a/src/jogl/classes/com/jogamp/graph/curve/opengl/RegionRenderer.java b/src/jogl/classes/com/jogamp/graph/curve/opengl/RegionRenderer.java
index 0a8f4482e..e2674fbe0 100644
--- a/src/jogl/classes/com/jogamp/graph/curve/opengl/RegionRenderer.java
+++ b/src/jogl/classes/com/jogamp/graph/curve/opengl/RegionRenderer.java
@@ -328,6 +328,8 @@ public final class RegionRenderer {
      * In case enable and disable {@link GLCallback}s are setup via {@link #create(Vertex.Factory<? extends Vertex>, RenderState, GLCallback, GLCallback)},
      * they will be called before toggling the shader program.
      * </p>
+     * @param gl current GL object
+     * @param enable if true enable the current {@link ShaderProgram}, otherwise disable.
      * @see #create(Vertex.Factory<? extends Vertex>, RenderState, GLCallback, GLCallback)
      * @see #useShaderProgram(GL2ES2, int, boolean, int, int, TextureSequence)
      * @see RenderState#setShaderProgram(GL2ES2, ShaderProgram)