Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Apply tweaks and optimizations from RP2040 Doom #1

Open
jserv opened this issue Aug 19, 2022 · 0 comments
Open

Apply tweaks and optimizations from RP2040 Doom #1

jserv opened this issue Aug 19, 2022 · 0 comments

Comments

@jserv
Copy link

jserv commented Aug 19, 2022

With 264K of RAM, two CortexM0+ CPUs and a decent clock speed, the RP2040 is certainly resource-constraint. RP2040 Doom did impressive work to tweak and optimize Doom.
tseng0201 added a commit to tseng0201/doom_riscv that referenced this issue Jan 13, 2023
@tseng0201
Implement combine screens and cut wipe screen effect
2a55828 
Reduce memory use for doom
Control flag "DISABLE_WIPES" and "COMBINE_SCREENS" are define in doomdef.h.
DISABLE_WIPES will cut wipe screen effect, COMBINE_SCREENS will discard screen buffer sysprog21#1、sysprog21#2、sysprog21#3.
V_Init() function make four buffers pointer to same address(address of screen buffer #0) In v_video.c
DOOMHEAP are replaced by static array and it size are controled by DOOM_HEAP_SIZE, both are in i_system.c
Screen buffers are replaced by static array and I_AllocLow will return screen buffers directly in i_system.c
If cut wipe screen effect,in f_wipe.c only wipe_StartScreen()、wipe_EndScreen()、wipe_ScreenWipe() will remain,
wipe_ScreenWipe() only copy data from screen buffer sysprog21#3 to screen buffer sysprog21#1 directly.
tseng0201 added a commit to tseng0201/doom_riscv that referenced this issue Jan 13, 2023
@tseng0201
IMPLEMENT COMBINE SCREENS AND CUT WIPE SCREEN EFFECT
24013b8 
Reduce memory use for doom
Control flag "DISABLE_WIPES" and "COMBINE_SCREENS" are define in doomdef.h.
DISABLE_WIPES will cut wipe screen effect, COMBINE_SCREENS will discard screen buffer sysprog21#1、sysprog21#2、sysprog21#3.
V_Init() function make four buffers pointer to same address(address of screen buffer #0) In v_video.c.
DOOMHEAP are replaced by static array and it size are controled by DOOM_HEAP_SIZE, both are in i_system.c.
Screen buffers are replaced by static array and I_AllocLow will return screen buffers directly in i_system.c.
If cut wipe screen effect, in f_wipe.c only wipe_StartScreen()、wipe_EndScreen()、wipe_ScreenWipe() will remain,
wipe_ScreenWipe() only copy data from screen buffer sysprog21#3 to screen buffer sysprog21#1 directly.
tseng0201 added a commit to tseng0201/doom_riscv that referenced this issue Jan 13, 2023
@tseng0201
IMPLEMENT COMBINE SCREENS AND CUT WIPE SCREEN EFFECT
b6b349d 
Reduce memory use for doom
Control flag "DISABLE_WIPES" and "COMBINE_SCREENS" are define in doomdef.h.
DISABLE_WIPES will cut wipe screen effect, COMBINE_SCREENS will discard screen buffer sysprog21#1、sysprog21#2、sysprog21#3.
V_Init() function make four screen buffers pointer to same address(address of screen buffer #0) In v_video.c.
DOOMHEAP are replaced by static array and it size are controled by DOOM_HEAP_SIZE, both are in i_system.c.
Screen buffers are replaced by static array and I_AllocLow will return screen buffers directly in i_system.c.
If cut wipe screen effect, in f_wipe.c only wipe_StartScreen()、wipe_EndScreen()、wipe_ScreenWipe() will remain,
wipe_ScreenWipe() only copy data from screen buffer sysprog21#3 to screen buffer #0 directly.
tseng0201 added a commit to tseng0201/doom_riscv that referenced this issue Jan 13, 2023
@tseng0201
IMPLEMENT COMBINE SCREENS AND CUT WIPE SCREEN EFFECT
bd63063 
Reduce memory use for doom
Control flag "DISABLE_WIPES" and "COMBINE_SCREENS" are define in doomdef.h.
DISABLE_WIPES will cut wipe screen effect, COMBINE_SCREENS will discard screen buffer sysprog21#1、sysprog21#2、sysprog21#3.
V_Init() function make four screen buffers pointer to same address(address of screen buffer #0) In v_video.c.
DOOMHEAP are replaced by static array and it size are controled by DOOM_HEAP_SIZE, both are in i_system.c.
Screen buffers are replaced by static array and I_AllocLow will return screen buffers directly in i_system.c.
If cut wipe screen effect, in f_wipe.c only wipe_StartScreen()、wipe_EndScreen()、wipe_ScreenWipe() will remain,
wipe_ScreenWipe() only copy data from screen buffer sysprog21#3 to screen buffer #0 directly.
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
None yet
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
1 participant
@jserv