Implement a software renderer
st3fan opened this issue · 5 comments
st3fan commented
Implement a software renderer that blits/copies pixels into an SDL_Surface. This will allow the emulators to run on the Raspberry Pi Zero and other platforms without hardware accelerated OpenGL support.
st3fan commented
Current performance on a Raspberry Pi Zero:
pi@raspberrypi:~/Projects/ewm/src $ ./scr_test
txt_full_refresh green 95.103/refresh
txt_full_refresh color 24.554/refresh
lgr_full_refresh green 17.619/refresh
lgr_full_refresh color 17.648/refresh
hgr_full_refresh green 19.561/refresh
hgr_full_refresh color 35.250/refresh
st3fan commented
After changing the BlendMode to SDL_BLENDMODE_NONE in scr_render_character():
txt_full_refresh green 36.373/refresh
st3fan commented
More refactorings:
txt_full_refresh green 36.192/refresh
txt_full_refresh color 23.082/refresh
lgr_full_refresh green 17.386/refresh
lgr_full_refresh color 17.327/refresh
hgr_full_refresh green 19.289/refresh
hgr_full_refresh color 20.671/refresh
st3fan commented
txt_full_refresh green 36.007/refresh
txt_full_refresh color 22.986/refresh
lgr_full_refresh green 17.295/refresh
lgr_full_refresh color 17.265/refresh
hgr_full_refresh green 18.400/refresh
hgr_full_refresh color 19.863/refresh
st3fan commented
txt_full_refresh green 22.094/refresh
txt_full_refresh color 22.218/refresh
lgr_full_refresh green 17.155/refresh
lgr_full_refresh color 17.127/refresh
hgr_full_refresh green 17.698/refresh
hgr_full_refresh color 19.170/refresh