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Other CompositableClients have their own custom code that is not currently using anything like an EGLStream, but could be. | Other CompositableClients have their own custom code that is not currently using anything like an EGLStream, but could be. | ||
= Understanding what Android 4.3 is doing = | |||
In Android 4.3, as we said above, there is a universal surface type, android::GraphicBuffer. Moreover, there are shared surface-passing mechanisms (BufferQueue). So it looks like this: | |||
*** Figure 3: overview of Android's surface-passing *** | |||
. . | |||
. . | |||
. . +----------+ | |||
. . |EGLSurface| | |||
. . | handle | | |||
. . +----------+ | |||
. . | |||
. . | | |||
. . | references | |||
. . v | |||
. . dequeue() | |||
+--------+ . +-----------+ . +------------------+ --------------> +------+ | |||
|Consumer| <----------- |BufferQueue| <------------ | Surface class | |Client| | |||
+--------+ consumes +-----------+ presents |e.g. ANativeWindow| | | | |||
. . +------------------+ <-------------- +------+ | |||
| . | . queue() | |||
| holds . | wraps . | | |||
| . | . | holds | |||
v . v . v | |||
. . | |||
+-------------+ . +---------------+ . +-------------+ | |||
|GraphicBuffer| . | queue impl. | . |GraphicBuffer| | |||
+-------------+ . +---------------+ . +-------------+ | |||
. . | |||
. | . | |||
. | holds . | |||
. v . | |||
. . | |||
. +-------------+ . | |||
. |GraphicBuffer| . | |||
. +-------------+ . | |||
. . | |||
. . | |||
. . | |||
. . | |||
+----------------------+ +----------------------+ | |||
| In Mozilla's case | | In Android's case | | |||
|case, the IPC frontier| |case, the IPC frontier| | |||
| is here | | is here | | |||
+----------------------+ +----------------------+ | |||
= Developing a standard MozSurface abstraction = | = Developing a standard MozSurface abstraction = | ||
| Line 131: | Line 179: | ||
*** Figure | *** Figure 4: The plan for MozSurface *** | ||
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*** Figure | *** Figure 5. JeffG and Dan's magic swap chain that allows *** | ||
*** consumers on multiple processes *** | *** consumers on multiple processes *** | ||