Function makeCurrent

server/backend.cpp:752–842

Bool makeCurrent(Display *dpy, GLXDrawable draw, GLXDrawable read,
	GLXContext ctx)
{
	if(fconfig.egl)
	{
		try
		{
			if(!_eglBindAPI(EGL_OPENGL_API))
				THROW("Could not enable OpenGL API");
			EGLBoolean ret = (Bool)_eglMakeCurrent(EDPY, EGL_NO_SURFACE,
				EGL_NO_SURFACE, (EGLContext)ctx);
			if(!ret) THROW_EGL("eglMakeCurrent()");
			setCurrentContextEGL(ctx);
			setCurrentDrawableEGL(draw);
			setCurrentReadDrawableEGL(read);
			if(!ctx)
			{
				_eglReleaseThread();
				return True;
			}

			FakePbuffer *drawpb = NULL, *readpb = NULL;
			drawpb = PBHASHEGL.find(draw);
			readpb = (read == draw ? drawpb : PBHASHEGL.find(read));
			GLint drawFBO = -1, readFBO = -1;
			_glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &drawFBO);
			_glGetIntegerv(GL_READ_FRAMEBUFFER_BINDING, &readFBO);

			if(drawpb)
				drawpb->createBuffer(false, true,
					(CTXHASHEGL.getDrawFBO(ctx) == 0 || drawFBO == 0),
					(CTXHASHEGL.getReadFBO(ctx) == 0 || readFBO == 0));
			if(readpb && readpb != drawpb)
				readpb->createBuffer(false, true,
					(CTXHASHEGL.getDrawFBO(ctx) == 0 || drawFBO == 0),
					(CTXHASHEGL.getReadFBO(ctx) == 0 || readFBO == 0));

			bool boundNewDrawFBO = false, boundNewReadFBO = false;
			if(drawpb && (CTXHASHEGL.getDrawFBO(ctx) == 0 || drawFBO == 0))
			{
				_glBindFramebuffer(GL_DRAW_FRAMEBUFFER, drawpb->getFBO());
				boundNewDrawFBO = true;
			}
			if(readpb && (CTXHASHEGL.getReadFBO(ctx) == 0 || readFBO == 0))
			{
				_glBindFramebuffer(GL_READ_FRAMEBUFFER, readpb->getFBO());
				boundNewReadFBO = true;
			}

			VGLFBConfig config = CTXHASHEGL.findConfig(ctx);
			if(drawpb)
			{
				if(drawFBO == 0 && config)
				{
					drawpb->setDrawBuffer(config->attr.doubleBuffer ?
						GL_BACK : GL_FRONT, false);
					_glViewport(0, 0, drawpb->getWidth(), drawpb->getHeight());
				}