Publishing an OpenGL 3.2 FBO to a Syphon server.

gistfile1.m

CGLLockContext(_syServer.context);
CGLSetCurrentContext(_syServer.context);
[_syServer bindToDrawFrameOfSize:_syTexSz];
GLint syFBO;
glGetIntegerv(GL_FRAMEBUFFER_BINDING, &syFBO);
glBindFramebuffer(GL_READ_FRAMEBUFFER, _blitTarget->framebuffer);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, syFBO);

glBlitFramebuffer(0, 0, _blitTarget->width, _blitTarget->height,
                  0, 0, _blitTarget->width, _blitTarget->height,
                  GL_COLOR_BUFFER_BIT, GL_LINEAR);
[_syServer unbindAndPublish];
CGLUnlockContext(_syServer.context);