Bug 1465 - Graph / GraphUI: Render a Region's ColorTexture in proper aspect-ratio, letter-boxed or zoomed (config) + Bug 1466 Fix color mixing

Bug 1465: Region currently simply bloats a given texture to its region AABBox,
which renders textures with the wrong aspect ratio.

Add facility to program the texture-coordinates to either letter-box
or scaled-up (and cut) true aspect-ratio.
Default shall be zoom (scale-up and cut),
but user shall be able to set a flag in the Region for letter-box.

Have the shader clip texture coordinates properly,
best w/o branching to soothe performance.

See functions.glsl

+++

Bug 1466: Current color mix: texture * color_channel * color_static
is useless in GraphUI.

color_static shall modulate the texture, which works.
But in case of color_channel (attribute/varying)
we want it to be mixed so it can become the more dominant color
for e.g. a border.

Desired is:

color = vec4( mix( tex.rgb * gcu_ColorStatic.rgb, gcv_Color.rgb, gcv_Color.a ),
              mix( tex.a * gcu_ColorStatic.a, 1, gcv_Color.a) );

1 files changed, 1 insertions, 1 deletions

diff --git a/src/graphui/classes/com/jogamp/graph/ui/shapes/ImageButton.java b/src/graphui/classes/com/jogamp/graph/ui/shapes/ImageButton.java
index cd919546d..d8c79d8e7 100644
--- a/src/graphui/classes/com/jogamp/graph/ui/shapes/ImageButton.java
+++ b/src/graphui/classes/com/jogamp/graph/ui/shapes/ImageButton.java
@@ -55,7 +55,7 @@ public class ImageButton extends TexSeqButton {
                        final float height, final ImageSequence texSeq) {
         super(renderModes, width, height, texSeq);
 
-        setColor(1f, 1f, 1f, 1.0f);
+        setColor(1f, 1f, 1f, 0.0f);
         setPressedColorMod(0.9f, 0.9f, 0.9f, 0.9f);
         setToggleOffColorMod(1f, 1f, 1f, 1f);
         setToggleOnColorMod(0.8f, 0.8f, 0.8f, 1f);