Faster Alternatives to glReadPixels and glTexImage2D in OpenGL ES
InthedevelopmentofShou,I'vebeenusingGLSLwithNEONtomanipulateimagerotation,scalingandcolorconversion,beforesendthemtovideoencoder.SoIneedaveryefficientwaytotransferpixelsbetweenOpenGLandmemoryspace.The