1432 2023-04-20 13:15:38 +0200 glMultTransposeMatrixd and glLoadTransposeMatrixd buggy in AMD Adrenalin drivers 2023-07-17 13:26:32 +0200 1 1 3 JogAmp Jogl core 3.0.0 pc_all windows CONFIRMED https://forum.jogamp.org/glMultTransposeMatrixd-bug-with-AMD-graphics-card-td4042205.html P4 normal --- 1 gouessej sgothel sgothel DEFECT --- oldest_to_newest 6778 0 gouessej 2023-04-20 13:15:38 +0200 glMultTransposeMatrixd and glLoadTransposeMatrixd don't transpose correcly in some AMD Adrenalin drivers (at least since the vendor version 22.5.1) under Microsoft Windows. I suggest to detect the buggy drivers this ways (when isDriverATICatalyst is true): final VersionNumber amdSafeAdrenalinVersion = new VersionNumber(22, 5, 1); if ( vendorVersion.compareTo(amdSafeAdrenalinVersion) > 0 ) { final int quirk = GLRendererQuirks.BuggyGlMultTransposeMatrixd; if(DEBUG) { System.err.println("Quirk: "+GLRendererQuirks.toString(quirk)+": cause: OS "+Platform.getOSType()+", [Vendor "+glVendor+" or Renderer "+glRenderer+"], driverVersion "+vendorVersion); } quirks.addQuirk( quirk ); } I suggest to modify https://jogamp.org/cgit/jogl.git/tree/make/config/jogl/gl-gl4bc.cfg to override glMultTransposeMatrixd and glLoadTransposeMatrixd so that they use GLContext to know whether a workaround is needed and in this case the transposition should be done in software. 6780 1 sgothel 2023-05-23 17:08:55 +0200 https://docs.gl/gl3/glMultTransposeMatrix "Calling glMultTransposeMatrix with matrix M is identical in operation to glMultMatrix with MT, where T represents the transpose." https://jogamp.org/deployment/archive/rc/v2.5.0-rc-20230523/javadoc/jogl/javadoc/com/jogamp/opengl/math/Matrix4f.html#transpose(com.jogamp.opengl.math.Matrix4f) 6781 2 sgothel 2023-05-23 17:10:25 +0200 (In reply to Sven Gothel from comment #1) Since the API entry in question is of type double, perhaps we copy Matrix4f -> Matrix4d (float -> double) and use it for the SW replacement if quirk is set? 6816 3 gouessej 2023-07-17 13:26:32 +0200 (In reply to Sven Gothel from comment #2) Good idea.