I am developing for Android using opengl/egl. My app requires a second context for loading textures from a second thread.
My code works fine on android 2.3, but when I try the code on a 4.0.3 android device or emulator, eglMakeCurrent() fails with EGL_BAD_MATCH.
The initialization of the second context and it’s pixel buffer all works fine too, so I am not sure where to begin looking for this error.
This is the initialization code:
ANativeWindow *window = (ANativeWindow*)displaySurface;
EGLint dummy, format;
display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
eglInitialize(display, 0, 0);
EGLint contextAttribs[] =
{
EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE
};
const EGLint configAttribs[] =
{
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_BLUE_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_RED_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_BUFFER_SIZE, 32,
EGL_DEPTH_SIZE, 24,
EGL_NONE
};
EGLint numConfigs;
EGLConfig config;
eglChooseConfig(display, configAttribs, &config, 1, &numConfigs);
eglGetConfigAttrib(display, config, EGL_NATIVE_VISUAL_ID, &format);
ANativeWindow_setBuffersGeometry(window, 0, 0, format);
surface = eglCreateWindowSurface(display, config, window, NULL);
if(surface == NULL)
Trace("error creating window surface: " + GetEglError());
context = eglCreateContext(display, config, EGL_NO_CONTEXT, contextAttribs);
if(context == NULL)
Trace("error creating main context: " + GetEglError());
const EGLint auxConfigAttribs[] =
{
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
EGL_BLUE_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_RED_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_DEPTH_SIZE, 0,
EGL_STENCIL_SIZE, 0,
EGL_NONE
};
EGLint pbufferAttribs[] =
{
EGL_WIDTH, 1,
EGL_HEIGHT, 1,
EGL_TEXTURE_TARGET, EGL_NO_TEXTURE,
EGL_TEXTURE_FORMAT, EGL_NO_TEXTURE,
EGL_NONE
};
EGLint auxNumConfigs;
EGLConfig auxConfig;
eglChooseConfig(display, auxConfigAttribs, &auxConfig, 1, &auxNumConfigs);
auxSurface = eglCreatePbufferSurface(display, auxConfig, pbufferAttribs);
if(auxSurface == NULL)
Trace("error creating pbuffer surface: " + GetEglError());
auxContext = eglCreateContext(display, auxConfig, context, contextAttribs);
if(auxSurface == NULL)
Trace("error creating auxilliary context: " + GetEglError());
if(!eglMakeCurrent(display, surface, surface, context))
Trace("could not make main context current: " + GetEglError());
On my Android 2.3 device(HTC Desire), the above initialization code works perfectly, and I can make the auxContext current, and load textures just fine.
BUT, on my android 4.0.3 device(Samsung Nexus S) and my Android 4.1 device (Galaxy Note 2), eglMakeCurrent() fails with EGL_BAD_MATCH after a successful initialization.
any help would be greatly appreciated,
Thanks,
Nick