Revert "GHOST: Delay opengl context initialization"

This reverts commit 128926a41b.

intern/gawain/src/gwn_vertex_array_id.cpp

@@ -18,7 +18,7 @@
 #include <mutex>
 #include <unordered_set>
 
-#if 0
+#if TRUST_NO_ONE
 extern "C" {
 extern int BLI_thread_is_main(void); // Blender-specific function
 }
@@ -68,8 +68,7 @@ static void clear_orphans(Gwn_Context* ctx)
 Gwn_Context* GWN_context_create(void)
 	{
 #if TRUST_NO_ONE
-	/* We cannot rely on this anymore. */
-	// assert(thread_is_main());
+	assert(thread_is_main());
 #endif
 	Gwn_Context* ctx = new Gwn_Context;
 	glGenVertexArrays(1, &ctx->default_vao);

intern/ghost/intern/GHOST_ContextGLX.cpp

@@ -110,9 +110,6 @@ GHOST_TSuccess GHOST_ContextGLX::swapBuffers()
 
 GHOST_TSuccess GHOST_ContextGLX::activateDrawingContext()
 {
-	if (m_init == false) {
-		initContext();
-	}
 	if (m_display) {
 		return ::glXMakeCurrent(m_display, m_window, m_context) ? GHOST_kSuccess : GHOST_kFailure;
 	}
@@ -187,8 +184,7 @@ const bool GLXEW_ARB_create_context_robustness =
 	glxewInit();
 #endif  /* USE_GLXEW_INIT_WORKAROUND */
 
-	/* Only init the non-offscreen context directly */
-	const bool do_init = (m_window != None);
+
 
 	if (GLXEW_ARB_create_context) {
 		int profileBitCore   = m_contextProfileMask & GLX_CONTEXT_CORE_PROFILE_BIT_ARB;
@@ -308,27 +304,12 @@ const bool GLXEW_ARB_create_context_robustness =
 	GHOST_TSuccess success;
 
 	if (m_context != NULL) {
+		const unsigned char *version;
+
 		if (!s_sharedContext)
 			s_sharedContext = m_context;
 
 		s_sharedCount++;
-	}
-
-	if (do_init) {
-		success = initContext();
-	}
-
-	GHOST_X11_ERROR_HANDLERS_RESTORE(handler_store);
-
-	return success;
-}
-
-GHOST_TSuccess GHOST_ContextGLX::initContext()
-{
-	GHOST_TSuccess success;
-
-	if (m_context != NULL) {
-		const unsigned char *version;
 
 		glXMakeCurrent(m_display, m_window, m_context);
 
@@ -360,12 +341,13 @@ GHOST_TSuccess GHOST_ContextGLX::initContext()
 		success = GHOST_kFailure;
 	}
 
-	/* We tag as init even if it fails. */
-	m_init = true;
+
+	GHOST_X11_ERROR_HANDLERS_RESTORE(handler_store);
 
 	return success;
 }
 
+
 GHOST_TSuccess GHOST_ContextGLX::releaseNativeHandles()
 {
 	m_window = 0;

intern/ghost/intern/GHOST_ContextGLX.h

@@ -116,7 +116,6 @@ public:
 
 private:
 	void initContextGLXEW();
-	GHOST_TSuccess initContext();
 
 	Display *m_display;
 	GLXFBConfig m_fbconfig;
@@ -129,7 +128,6 @@ private:
 	const int m_contextResetNotificationStrategy;
 
 	GLXContext m_context;
-	bool m_init;
 
 	/** The first created OpenGL context (for sharing display lists) */
 	static GLXContext s_sharedContext;

source/blender/draw/intern/draw_manager.c

@@ -2184,8 +2184,6 @@ void DRW_opengl_context_create(void)
 	}
 	/* This changes the active context. */
 	DST.gl_context = WM_opengl_context_create();
-	/* Make the context active for this thread (main thread) */
-	WM_opengl_context_activate(DST.gl_context);
 	/* Be sure to create gawain.context too. */
 	DST.gwn_context = GWN_context_create();
 	if (!G.background) {