Faster Alternatives to glReadPixels and glTexImage2D in OpenGL ES
Inthedevelopmentof Shou,I'vebeenusingGLSLwithNEONtomanipulateimagerotation,scalingandcolorconversion,beforesendthemtovideoencoder.SoIneedaveryefficientwaytotransferpixelsbetweenOpenGLandmemoryspace.Th