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authorSudhanshu Jha <sudhanshu.jha@arm.com>2017-02-24 13:34:22 +0000
committerAndreas Sandberg <andreas.sandberg@arm.com>2017-03-07 11:14:28 +0000
commit9dd54d10ab63c395b84bff31b5ff94b35c44e18f (patch)
tree80c7755669f3db6651b424ba5e2fae7f687b5b56 /src/mem
parent82a8230aa761e193a91ade0fa3c109a5c0f08aed (diff)
downloadgem5-9dd54d10ab63c395b84bff31b5ff94b35c44e18f.tar.xz
dev: Add support for single-pass scan out in the PixelPump
Add a helper function to scan out an entire frame in one time step. This requires the public PixelPump to be changed somewhat to separate timing updates from general PixelPump control. Instead of calling PixelPump::start(timings), timings now need to be updated using a separate call to PixelPump::updateTimings(timings) before calling PixelPump::start(). Display controllers that don't need accurate timing (e.g., in KVM mode), can use the new PixelPump::renderFrame() API to render an entire frame in one step. This call results in the same callbacks (e.g., calls to nextPixel()) as the timing calls, but they all happen in immediately. Unlike the timing counterpart, renderFrame() doesn't support buffer underruns and will panic if nextPixle() indicates an underrun. Change-Id: I76c84db04249b02d4207c5281d82aa693d0881be Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/2241 Reviewed-by: Rahul Thakur <rjthakur@google.com> Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
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