1228 2015-09-23 13:30:01 +0200 Allow setting other glBlendFunc in GLRegion renderer 2024-02-14 00:50:09 +0100 1 1 3 JogAmp Jogl graph tbd All all RESOLVED WONTFIX --- enhancement --- 1064 0 alan.zgb sgothel alan.zgb kdropucic rami.santina sgothel FEATURE --- oldest_to_newest 5204 0 alan.zgb 2015-09-23 13:30:01 +0200 For RegionRenderer, blending can currently be set by renderState.setHintMask(RenderState.BITHINT_BLENDING_ENABLED). This always uses gl.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA) under the hood (hardcoded). It would be nice to allow setting other blending functions for RenderState / TextRendererUtil, as we use different blending function in our framework - gl.glBlendFunc(GL.ONE, GL.GL_ONE_MINUS_SRC_ALPHA), for premultiplied alpha, which is de facto standard: http://blogs.msdn.com/b/shawnhar/archive/2009/11/06/premultiplied-alpha.aspx Currently, I found it hardcoded in the following classes (it even mentions possibility of other functions in comments): VBORegionSPES2, line 234: if( renderer.getRenderState().isHintMaskSet(RenderState.BITHINT_BLENDING_ENABLED) ) { gl.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA); } VBORegion2PVBAAES2, line 607: VBORegion2PMSAAES2, line 493: if( blendingEnabled ) { gl.glClearColor(0f, 0f, 0f, 0.0f); gl.glClear(GL.GL_COLOR_BUFFER_BIT); // no depth-buffer w/ blending // For already pre-multiplied alpha values, use: // gl.glBlendFunc(GL.GL_ONE, GL.GL_ONE_MINUS_SRC_ALPHA); // Multiply RGB w/ Alpha, preserve alpha for renderFBO(..) gl.glBlendFuncSeparate(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA, GL.GL_ONE, GL.GL_ONE_MINUS_SRC_ALPHA); } else { gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT); } 7140 1 sgothel 2024-02-14 00:50:09 +0100 Not for now, perhaps on commission / contract