GPU: Make the overall functionality of CopyLineExpand() and CopyLineReduce() more complete. Also do some small optimizations to GPUEngineBase::_LineCopy() while I'm at it.

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- GPUEngineBase::_LineCopy() optimizations only apply to 2x, 3x, and 4x scaling.
- Add SSE2 version of 3x CopyLineExpand() when using ELEMENTSIZE==1.
- Add SSE2 versions of CopyLineReduce() and add specific 2x/3x/4x versions of CopyLineReduce_*() algorithms.
- CopyLineExpand() now supports vertical scaling in addition to horizontal scaling.
- GPU buffers that were previously only cache-aligned are now page-aligned if appropriate.

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rogerman 2018-09-19 16:06:39 -07:00

parent 7c80205a40

commit acb140209a

1 changed files with 817 additions and 138 deletions

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desmume/src/GPU.cpp

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