Posted by hharrison on Sep 14, 2023; 4:43pm
URL: https://forum.jogamp.org/MacOS-Assistance-Shader-Loading-in-Shared-Context-tp4042936.html

Looking for some guidance on a MacOS issue we've been seeing from Jaamsim users, all rendering is done from a dedicated render thread, initializing on windows works just fine, but after some (recentish) driver updates on MacOS we reliably get failures setting up the shared context. I've tried to boil down the code run in the render thread to the bare minimum to see if anyone can spot what I'm doing wrong, any suggestions welcome. This is the entire procedure run when the render thread starts, error occurs in loadShaders the first time the shared context is used with a call to:

gl.glCreateShader(GL2GL3.GL_VERTEX_SHADER);

Always throws: error 1286 which is FrameBuffer not ready...I think. But I can't figure out what I'm missing here...any suggestions?



                // GLProfile.initSingleton();
                GLProfile glp = GLProfile.get(GLProfile.GL2GL3);
                caps = new GLCapabilities(glp);
                caps.setSampleBuffers(true);
                caps.setNumSamples(4);
                caps.setDepthBits(24);

                final boolean createNewDevice = true;
                dummyDrawable = GLDrawableFactory.getFactory(glp).createDummyAutoDrawable(null, createNewDevice, caps, null);
                dummyDrawable.display(); // triggers GLContext object creation and native realization.

                sharedContext = dummyDrawable.getContext();

                GL gl = sharedContext.getGL();
                gl3Supported = gl.isGL3();
                gl4Supported = gl.isGL4();
                glVersion = sharedContext.getGLVersionNumber();
                indirectSupported = checkGLVersion(4, 3) && !safeGraphics;
               
                int res = sharedContext.makeCurrent();
                assert (res == GLContext.CONTEXT_CURRENT);

                if (USE_DEBUG_GL) {
                        sharedContext.setGL(new DebugGL4bc((GL4bc)sharedContext.getGL().getGL2GL3()));
                }

                LogBox.formatRenderLog("Found OpenGL version: %s", sharedContext.getGLVersion());
                LogBox.formatRenderLog("Found GLSL: %s", sharedContext.getGLSLVersionString());
                VersionNumber vn = sharedContext.getGLVersionNumber();
                boolean isCore = sharedContext.isGLCoreProfile();
                LogBox.formatRenderLog("OpenGL Major: %d Minor: %d IsCore:%s", vn.getMajor(), vn.getMinor(), isCore);
                if (vn.getMajor() < 2) {
                        throw new RenderException("OpenGL version is too low. OpenGL >= 2.1 is required.");
                }
                GL2GL3 gl23 = sharedContext.getGL().getGL2GL3();
                if (!isCore && (!gl3Supported || safeGraphics))
                        initShaders(gl23);
                else
                        initCoreShaders(gl23, sharedContext.getGLSLVersionString());