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a3e0f6da25
byuu says: I added (imperfect) memory conflict timing to the SA1. Before: - WRAM↔↔ROM ran 7% too fast - ROM↔↔ROM ran 100% too fast - WRAM↔↔IRAM ran 7% too fast - ROM↔↔IRAM ran 7% too fast - IRAM↔↔IRAM ran 287% too fast - BWRAM↔↔BWRAM ran 100% too fast - HDMA ROM↔↔ROM ran 15% too fast - HDMA WRAM↔↔ROM ran 15% too fast - DMA ROM↔↔ROM ran 100% too fast After: - ROM↔↔ROM runs 14% too fast - HDMA WRAM↔↔ROM runs 7% too fast - DMA ROM↔↔ROM runs 4% too fast If you enable this with the fast PPU + DSP, your framerate in SA1 games will drop by 51%. And even if you disable it, you'll still lose 9% speed in SA1 games, and 2% speed in non-SA1 games, because of changes needed to make this support possible. By default, I'm leaving this off. Compile with `-DACCURATE_SA1` (or uncomment the line in sfc/sfc.hpp) if you want to try it out. This'll almost certainly cause some SA1 regressions, so I guess we'll tackle those as they arise.
79 lines
1.7 KiB
C++
79 lines
1.7 KiB
C++
#pragma once
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//multi-precision arithmetic
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//warning: each size is quadratically more expensive than the size before it!
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#include <nall/stdint.hpp>
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#include <nall/string.hpp>
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#include <nall/range.hpp>
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#include <nall/traits.hpp>
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#include <nall/arithmetic/unsigned.hpp>
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#if !defined(__SIZEOF_INT128__)
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#define PairBits 128
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#define TypeBits 64
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#define HalfBits 32
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#include <nall/arithmetic/natural.hpp>
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#undef PairBits
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#undef TypeBits
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#undef HalfBits
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#endif
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#define PairBits 256
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#define TypeBits 128
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#define HalfBits 64
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#include <nall/arithmetic/natural.hpp>
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#undef PairBits
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#undef TypeBits
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#undef HalfBits
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#define PairBits 512
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#define TypeBits 256
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#define HalfBits 128
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#include <nall/arithmetic/natural.hpp>
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#undef PairBits
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#undef TypeBits
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#undef HalfBits
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#define PairBits 1024
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#define TypeBits 512
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#define HalfBits 256
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#include <nall/arithmetic/natural.hpp>
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#undef PairBits
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#undef TypeBits
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#undef HalfBits
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#define PairBits 2048
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#define TypeBits 1024
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#define HalfBits 512
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#include <nall/arithmetic/natural.hpp>
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#undef PairBits
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#undef TypeBits
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#undef HalfBits
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#define PairBits 4096
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#define TypeBits 2048
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#define HalfBits 1024
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#include <nall/arithmetic/natural.hpp>
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#undef PairBits
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#undef TypeBits
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#undef HalfBits
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#define PairBits 8192
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#define TypeBits 4096
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#define HalfBits 2048
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#include <nall/arithmetic/natural.hpp>
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#undef PairBits
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#undef TypeBits
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#undef HalfBits
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namespace nall {
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//TODO: these types are for expressing smaller bit ranges in class interfaces
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//for instance, XChaCha20 taking a 192-bit nonce
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//however, they still allow more bits than expressed ...
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//some sort of wrapper needs to be devised to ensure these sizes are masked and wrap appropriately
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using uint192_t = uint256_t;
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}
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