I am looking for example / articles on how to perform updates to an Open GL ES texture (without using low Performing glTexSubImage2D approach) in a zero copy approach.
I am currently focused on odroid XU3 with MALI T628 running ubuntu.
I studied and tried eglcreateImageKHR approach without success (I cannot create an eglImage: error EGL_BAD_PARAMETER is returned when using EGL_NATIVE_PIXMAP_KHRas a target).
I read that MALI driver has support for UMP data transfer, but I still need a reference to the inner buffer in a openGL ES texture.
Any help needed
I tried fbdev user space driver on xu3.
1) There is a unacceptable tear-off effect, even with a very simple texture.
2) no way to create an an EGLImage