Commit graph

11 commits

Author SHA1 Message Date
Michel Heily
52ef793759 Move gpu module to a separate folder, to allow for later cleanup.
Also, get rid of "render" command


Former-commit-id: 7dd004f3ff8f55686665adead497ebae4f873379
2019-08-11 22:28:52 +03:00
Michel Heily
acd0e4f338 cpu: Refactor instructions to use explicit cycle counting.
The way cycles were counted up untill now was not accurate enough,
I've avoided doing so because the instruction implementation looks
bloated this way, but I've had problems with cycle accuracy with tonc's
timer demo.

This is not entirely correct though, and I'm 100% sure there are some
mistakes, but works good enough for now.


Former-commit-id: 748faaf99fe2f42925c0a2110192c6a01e5d27d4
2019-08-08 20:05:09 +03:00
Michel Heily
c72bbb96fd [WIP] Timers
Seems to work, but the cycle's are not accurate so they run slowly


Former-commit-id: a0b80acb4b68ed64caa535a0ec9f75a081d3aed4
2019-08-05 09:53:41 +03:00
Michel Heily
c7dd713605 The big ioregs refactoring.
This commit refactors the ioregs:
* Use bitfield crate to implement the GPU ioregs.
* IoRegs are stored in their own variables bindings (i.e, Gpu related ioregs are now fields of the Gpu struct)
  - This optimize performance quiet alot from my testings - since every scanline was accessing deseralizing ioregs from sysbus. (Getting constant 59fps now)
* For now, comment out DMA model

Also, cleaned the code up to eliminate rustc warnings.


Former-commit-id: 9077695c446ebd1a71783acfdd9819245aa02d7a
2019-08-03 00:24:15 +03:00
Michel Heily
9f0df9af06 optimization: Optimize VRAM accesses from within the gpu.
Not going through the memory mapping anymore.

Also, this commit wraps the gpu pixeldata with a struct


Former-commit-id: d7b706d9de61bac7909e10d6bbe092968e6acc9f
2019-08-02 18:04:35 +03:00
Michel Heily
eb2a1a02fe Implement background scrolling!
tonc's brin_demo.gba now works as intended :)


Former-commit-id: 596c063c5968534f42e42f52203c85262b9c6fa2
2019-07-31 00:52:46 +03:00
Michel Heily
f862209911 Support axis flip for tiles
Former-commit-id: daefb380ab2dfcee600297690dcc0c7c1a37f911
2019-07-29 09:46:12 +03:00
Michel Heily
66a484e3ae Fix mode0 calculation of tile map entries.
tonc's hello.gba demo now works correctly :)


Former-commit-id: ead3a01e810f69503abbe8bddd0853433862549b
2019-07-27 23:28:00 +03:00
Michel Heily
387e26fad9 Add support for BGMode3 (tonc first.gba example now working)
Former-commit-id: 52ac773ee2c3542ff3b046c3ea33fde02e804492
2019-07-22 00:09:44 +03:00
Michel Heily
7e9c0e31da Add minifb backend - Armwrestler now plays !
Former-commit-id: d72ea9139e04624322cf3bc4a8ab330f6bb133a4
2019-07-20 23:02:18 +03:00
Michel Heily
53115a9a58 Refactor core functionality into a separate module
Former-commit-id: 5d55b9eb0b63ed7c61465b4e814782165caa5002
2019-07-20 16:46:00 +03:00
Renamed from src/gpu.rs (Browse further)