Gens/GS TODO List

Release 7:

- Decrease PWM volume. Chilly Willy's PWM scaling patch made it too loud.
- [Win32] Add a configuration option to disable ASPI support. (Win9x has issues occasionally.)
- Finish the Gens/GS manual.
- Implement GensUI::fsMinimize() support for dialogs. (Also, Win32 support.)

MDP TODO for Gens/GS r7:
- Finish MDP documentation.
- Verify mdp_host_t "No (Not NULL)" and "No (NULL)" support in emulator and plugins.
- Finish an initial test suite for MDP rendering plugins.

Release 7.1:

- Don't show "Zip File Selection Dialog" if:
  - A ROM is opened in Full Screen.
- cc_window.c: Add checkboxes to the "Input Devices" listbox for filtering.
- Verify error handling in plugins.
- [Win32] Disable the "Apply" button on the "General Options" window if nothing has been changed.
- [GTK+] Consider setting the event box's background color to match the border color.
- Investigate Gens Rerecording commits r250, r252.
- Implement fullscreen and render selection fallbacks.
  - Notably, DirectDraw doesn't like it when selecting 960x720 or 1280x960 on some systems.
- [GDI] FPS counter is 2x what it should be.

- Convert the SH2 memory functions to read/write memory in 16-bit byteswapped format, similar to 68K.
  - This will allow use of the MD ROM buffer for SH2 functions, and save 4MB of memory.
- Extend MD ROM buffer to 8 MB. (8 MB in MD mode only; 32X limited to 4 MB.)
- mdZ80 using function pointer tables and pagetables for memory access.
- Change GensUI to C-style linkage instead of a class.
- DirectDraw 7 VDraw backend.
  - Hardware color conversion. (Always render in 15/16-bit color.)
  - Get border color drawing working in fullscreen when in 2x or higher.
- Initial VDP debugging plugin.
- "Cheat Finder" plugin.
- Use Flag_Clr_Scr consistently. (Maybe rename it?)
- Z80 RESET should force YM2612 to hold RESET. (i.e. don't accept writes when Z80 is in RESET)
- Allow selecting renderers on the command line. (regression from m6)
  - Set a variable in Gens_StartupInfo_t?
- [Win32] Trim pathnames for all files and directories located in the Gens directory.
- [Win32] hq3x: Broken in some cases. (Check width division!)
- Reports of slowdown on fglrx 9.10/8.660 (Ubuntu 9.10 beta) with an rv710 (RadeonHD 4350) [dmb in @retro]
  - Check with Ubuntu 8.04 and fglrx on rv530 (FireGL V5200)

TODO for later:
- [Win32] Improve DirectDraw border color drawing, especially when the window
  is a different aspect ratio than 4:3.
- Re-add v5 32X savestate load support.
  - Rewrite all GSX savestate functions to use structs.
- Implement proper TMSS support using the !CartCE register ($A14101, bit 0)
- Force a wakeup after an SDL hotkey is activated. (input_sdl_events.cpp)
- Reimplement "MINIMIZE" for fullscreen.
- Allow disabling SegaCD and 32X in build to make it easier to port to other platforms.
- Allow disabling all emulation code to test the UI on other platforms.
- Update v_effects.cpp::T_veffect_pause_tint() for RGB Color Scaling.

MDP TODO for later:
- Add "Exclusive Mode" so a plugin can gain exclusive control.
  - Disables reset, close ROM, etc.
- Game Genie: Add support for S68K, Z80, MSH2, and SSH2.
- Add "Input Remapping", needed for movie plugins and netplay.
- GL shader renderer infrastructure in MDP. (OpenEmu has an ARB shader-based hq4x renderer.)

Big Features TODO:
- libcdio
- ZOMG
- Reimplement the language system.
- Fix the interpolated_scanline 16-bit color asm (non-mmx) renderer.

High-Level TODO:
- Move most global variables to global Settings struct
- Port all Gens Rerecording changes
- Add Qt4 UI
- [MDP] Add VGM dumping support
- Add more compression format support
- Improve the Zip File Selection Dialog
- SSG-EG: http://www.spritesmind.net/_GenDev/forum/viewtopic.php?p=5716#5716
- (possibly?) Use Carbon/Cocoa for menus on MacOS.
- Add a simple OSD menu for Gens/GS SDL in fullscreen.
  - Maybe later, add a full OSD UI. (Will need to implement runtime UI switching in Gens/GS and MDP.)

Low Priority:
- Add MacOS X Aqua UI
- Automatic 32X mode switching when a 32X register is written to.
  This is how Kega enables 32X mode.

High-Level TODO:
- Rework border color emulation to be in the MD renderer, not the blitter.
- Reimplement OpenGL projection so it doesn't stretch on widescreen monitors.
  (Make it an option?)
- [Win32] Add OpenGL renderer.
- Combine common portions of the GTK+ and Win32 UIs.
- Combine the two versions of Starscream. (It'll still output two asms, though.)
- [Linux] Add a No GUI mode that runs in a plain SDL window.
- [Linux] Add a configure option to disable the GTK+ interface.
- Port MP3 support to LAME or some other MP3 library.
- Automatically format SegaCD RAM cartridges.
- [SDL] Figure out the minimum SDL version.
- [GTK+] game_genie: If Enter is pressed in a textbox, select "Add Code", not "OK".
- Pausing using Esc while in interlaced mode (Sonic 2 2P) causes the bottom
  half of the screen to screw up.
- [Win32] Windowed VSync might be broken.
- [Win32] Full Screen: Frame counter flickers.
- [Win32] Frameskip doesn't work correctly. (It completely disregards timing.)
- [ASPI] Only initialize when "Boot CD" is selected. (Also, close when SegaCD is closed.)
- Check if mingw32 forces 8-byte alignment for doubles. (ym2612 struct)
- J-Cart: http://spritesmind.net/_GenDev/forum/viewtopic.php?start=15&t=177
- [Linux] Mono sound is broken.

Low-Level TODO:
- Fix Illegal Address bug. Gens doesn't crash, but Kega and the actual
  MD do. (Possible: Make an option to crash on illegal address.)
- CD audio fixes in Gens Rerecording r65, r66, etc.
  - http://code.google.com/p/gens-rerecording/source/detail?r=65
- [MDP] Overclocking! Add an option to overclock the emulated CPUs so Sonic 2 2P doesn't lag.
- Proper support for 448 lines in interlaced mode. (Sonic 2 2P)
- Z80 initialization bug: http://forums.sonicretro.org/index.php?showtopic=11192
- [32X] PWM regressions from the C port, started in m5.1. PWM is broken in
  BC Racer, but BC Racer doesn't work anyway.

Miscellaneous:
- Commit fe2426a72420177fd3e7e4c086a673ec7273a97c fixed performance problems in VMware.
  This commit allows processing messages in GensUI::sleep(), which technically *shouldn't*
  fix the problem in VMware since GensUI::sleep() isn't called when a game is running.