Opengl format GL_RGB/GL_RGBA and NvBuffer format NvBufferColorFormat_ARGB32 question

yes,the original code is from the i-mx-surround-view-system of nxp,he code is ported to TX2,
Use glReadPixels retrieve data fusion in the opengl consumption of resources, want to directly through dms_fd way,but
the topic is not very clear , What should I do with dma in /DMA out mode containing the camera? Trying to process with OpenGL an EGLImage created from a dmabuf_fd - #9 by DaneLLL
Does nvidia tx2(agx) have a similar 3d panoramic program? Can VR Works 360 Stitch be used on TX2 ?