Open Source Ecosystems

MultiGPUIOSurface

================================================================================ DESCRIPTION:

MutiGPUIOSurface shows how to create IOSurfaces and bind them to OpenGL textures for both reading and writing. It demonstrates one way of passing IOSurfaces from one process to another via Mach RPC calls. It also demonstrates the system's ability to track IOSurface changes across process and GPU boundaries.

To test, after building the integrated target "MultiGPUApps", first run the server application "MultiGPUServer" and then the client application "MultiGPUClient".

================================================================================ BUILD REQUIREMENTS:

OS X 10.9 or later, Xcode 5.1 or later

================================================================================ RUNTIME REQUIREMENTS:

OS X 10.7 or later

================================================================================ PACKAGING LIST:

ClientController.h ClientController.m This class implements the controller object for the client application. It is responsible for looking up the server application, and responding to frame rendering requests from the server.

ClientOpenGLView.h ClientOpenGLView.m This class implements the client specific subclass of NSOpenGLView. It handles the client side rendering, which calls into the GLUT-based BluePony rendering code, substituting the contents of an IOSurface from the server application instead of the OpenGL logo.

It also shows how to bind IOSurface objects to OpenGL textures.

ServerController.h ServerController.m This class implements the controller object for the server application. It is responsible for setting up public Mach port for the server and listening for client applications to start up. It also sends frame display update requests to all clients after every frame update.

It is also responsible for creating the initial set of IOSurfaces used to send rendered frames to the client applications.

ServerOpenGLView.h ServerOpenGLView.m This class implements the server specific subclass of NSOpenGLView. It handles the server side rendering, which calls into the GLUT-based Atlantis rendering code to draw into an IOSurface using an FBO. It also performs local rendering of each frame for display purposes.

It also shows how to bind IOSurface objects to OpenGL textures, and how to use those for rendering with FBOs.

================================================================================ CHANGES FROM PREVIOUS VERSIONS:

Version 1.2