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when I $ emrun random.html, both inside Firefox and Edge on Windows 10, the HTML shell says "Exception thrown, see JavaScript console".
then I open console. I hit the browser's reload webpage button while holding SHIFT. it is impossible to refresh the webpage using keyboard for some reason.
Hmm, SDL_CreateRenderer probably chose the GLES renderer (and created a webgl context), SDL_UpdateWindowSurface would then try to create a 2d context and fail.
As this code doesn't use the renderer, not creating one would avoid this. Requesting the software renderer could also be a workaround.
Hmm, SDL_CreateRenderer probably chose the GLES renderer (and created a webgl context), SDL_UpdateWindowSurface would then try to create a 2d context and fail.
According to https://wiki.libsdl.org/SDL2/SDL_GetWindowSurface: "You may not combine this with 3D or the rendering API on this window." Thus I erred on my side by calling SDL_CreateRenderer(). I removed the improper call which is also useless, and the Web build worked just fine! Maybe it should return NULL and appropriately set SDL_GetError() to improve UX. Otherwise, you may close this issue.
Yup sounds like we could improve here perhaps. I'll leave this open in case somebody would like to try and fix. Although I guess its really an upsteam SDL issue ...
good night
when I
$ emrun random.html
, both inside Firefox and Edge on Windows 10, the HTML shell says "Exception thrown, see JavaScript console".then I open console. I hit the browser's reload webpage button while holding SHIFT. it is impossible to refresh the webpage using keyboard for some reason.
the console says:
I click on it. I scroll left. I find
SDL2.ctx = Module['createContext'](Module['canvas'], false, true);
now some commands I ran on my own inside browser console:
in the future I might do a binary search on Emscripten versions
Version of emscripten/emsdk:
Full link command and output with
-v
appended:$ EMCC_DEBUG=1 emcc -Os -sASYNCIFY -sSINGLE_FILE -sUSE_SDL=2 random.c -o random.html -v &>
clang64-emcc.txt
$ EMCC_DEBUG=1 emcc -Os -sASYNCIFY -sSINGLE_FILE -sUSE_SDL=2 random.c -o random.html -v &>
wsl2.txt
sorry for not providing minimal reproducible example, I'm tired
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