[SDL] Android OpenGL ES 2 context creation bug and fix
havoc at ghdigital.com
Sat Jul 9 13:43:16 PDT 2011
On an OpenGL ES 2 capable device, it is not enough to pick a config that supports ES2, it is necessary to specify an EGL_CONTEXT_CLIENT_VERSION of 2 when one is wanted... I have revised the
eglCreateContext call as shown below in my local copy.
I also think the eglChooseConfig is busted, the first config reported on my device has EGL_DEPTH_SIZE 0 which makes it rather useless for a 3D game, I uncommented the request for EGL_DEPTH_SIZE 16 in
my local copy for this purpose, the alternative would be to request a large number of configs (I got over 20 unique ones in testing... so a larger number is required) and picking the "best matching" one.
This is just a bland snippet of revised code for android-project/src/org/libsdl/app/SDLActivity.java - sorry for any inconvenience with it not being a directly applyable patch.
int contextAttrs = new int
EGLContext ctx = egl.eglCreateContext(dpy, config, EGL10.EGL_NO_CONTEXT, contextAttrs);
Author of DarkPlaces Quake1 engine - http://icculus.org/twilight/darkplaces
Co-designer of Nexuiz - http://alientrap.org/nexuiz
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