Started adding parameter info
Added more parameter info
texture: add BGRA support for iOS and other platform
ffpyplayer: render thread and glsl yuv2rgb
ffpyplayer: remove highp in the fragment shader, this is already the default on gles within our $HEADER
Merge branch 'matrix_docs' of https://github.com/kivy/kivy
ffpyplayer: move the waiting metadata state into the thread
Merge branch 'enhance-ffpyplayer'