gint/TODO
2024-07-13 21:05:09 +02:00

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Bugs to fix:
* render: figure out why fx-CG dclear() now takes 4.1 ms instead of 2.6 ms
Extensions on existing code:
* clock: mono support
* usb: and interrupt pipes
* fs: support RAM files
* fs: support USB streams as generic file descriptors
* fugue: support glob() to abstract away BFile entirely
* fugue/fs: offer a primitive to remove recursively, which is native in Fugue
* bfile: implement the optimization-restart as realized by Kbd2
* kernel: better restore to userspace before panic (ensure BL=0 IMASK=0)
* project: add license file
* kernel: group linker script symbols in a single header file
* r61524: brightness control and clean the file
* core: review forgotten globals and MPU addresses not in <gint/mpu/*.h>
* core: run destructors when a task-switch results in leaving the app
* fs: support read-only files backed with GetBlockAddress() on fx-CG
* kernel: SH4- or G-III-specific linker scripts?
* render: Properly document bopti fx. Also make it faster maybe?
Future directions:
* Audio playback using TSWilliamson's libsnd method
* Serial communication
* Make fx9860g projects work out of the box on fxcg50
* Base for Yatis' threads library
Bits that need to abstract out into APIs:
- display: Toggle backlight (or set level)
-> Have a backlight property with min/max values
@ getkey
@ justui jscene
- os: OS interface to access OS info, like in fxos
@ usb/setup.c set_strings
@ usb/classes/ff-bulk.c identify command
- render: current video mode
@ usb/classes/ff-bulk.c capture_vram
- gray: make gray engine a subset of t6k11 which then supports two modes
Video formats:
- i1msb
- 2i1msb
- rgb565
T6K11:
mode 0 : i1msb 128x64 @64 Hz
mode 1 : 2i1msb 128x64 @64 Hz
R61524:
mode 0 : rgb565 396x224 @? Hz
mode 1 : i3??? 396x224 @? Hz
mode 2 : i1msb 128x64 @? Hz # <- for g1a emulation :)
mode 3 : 2i1msb 128x64 @? Hz # <- for g1a emulation :)
enum {
/* Indexed 1-bit, 0 is white, 1 is black. Row-major, left-to-right, each
row a set of 4-byte values with leftmost pixel on the MSB. */
IMAGE_FORMAT_I1MSB,
/* Indexed 2-bit: white, light gray, dark gray, black. Represented as a
pair of I1MSB buffers, the first being bit #0, the second bit #1. */
IMAGE_FORMAT_2I1MSB,
};
fx-CP port progress. Vibe: can write simple programs, advanced features coming
DONE:
- load: stage-2 to VRAM backup (unused memory uses gint arena), no MMU
- kernel basics: malloc, interrupts, exceptions
- r61523 driver (no DMA), rendering (no DMA), keyboard driver, timer driver
IN-PROGRESS:
- unification of the image/video interface
- porting the GUIs in gintctl, many of which are hardcoded for 396x224
- figure out why the DMA doesn't work (should make dclear/dupdate faster)
MEDIUM TERM:
- touch driver, cpg driver (w/ potential overclock, given settings), rtc driver
- benchmark memory and display performance
- (details: hardware info, quit handler, poweroff)
LONGER TERM:
- port azur's rendering pipeline (might work out of the box)
- port libraries
- filesystem, remote debugging, usb, (serial once added)