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offscreen: Don't fail to create a window because of driver_loaded politics.

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Fixes #4922.
This commit is contained in:
Ryan C. Gordon 2021-11-20 14:11:30 -05:00
parent fadf41fc6e
commit 23b7bdef87
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GPG Key ID: FA148B892AB48044
2 changed files with 7 additions and 1 deletions
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2
src/video/SDL_egl.c
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@ -566,7 +566,7 @@ SDL_EGL_InitializeOffscreen(_THIS, int device)
EGLint num_egl_devices = 0;
const char *egl_device_hint;
if (_this->gl_config.driver_loaded != 1) {
if (_this->gl_config.driver_loaded <= 0) {
return SDL_SetError("SDL_EGL_LoadLibraryOnly() has not been called or has failed.");
}

6
src/video/offscreen/SDL_offscreenopengl.c
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@ -66,7 +66,13 @@ OFFSCREEN_GL_LoadLibrary(_THIS, const char* path)
return ret;
}
/* driver_loaded gets incremented by SDL_GL_LoadLibrary when we return,
but SDL_EGL_InitializeOffscreen checks that we're loaded before then,
so temporarily bump it since we know that LoadLibraryOnly succeeded. */
_this->gl_config.driver_loaded++;
ret = SDL_EGL_InitializeOffscreen(_this, 0);
_this->gl_config.driver_loaded--;
if (ret != 0) {
return ret;
}