rsx: Minor memory optimizations #13467
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- Unexpectedly high gains for msvc builds. GCC doesn't care, clang shits itself.
- Some methods are getting spammed every draw call
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Avoid unnecessary copies on the hot path. Profiling identified millions of memory copies every frame in msvc-compiled builds that actually add up enough to hurt performance with draw-call-heavy titles. A modest 3-10% uplift is observed in "infamous" which regularly issues 10-20k draw calls per frame.