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Do not abort EGL backend creation if EGL_NV_post_sub_buffer isn't supported

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In case the extension is not present eglQuerySurface returns EGL_FALSE
when querying for EGL_POST_SUB_BUFFER_SUPPORTED_NV and sets an
EGL_BAD_ATTRIBUTE error state. If this is the case it's not an error we
should abort on, but one we should ignore as it's the same as extension
not supported.

BUG: 315114
FIXED: 4.10.1
This commit is contained in:
Martin Gräßlin 2013-02-20 08:03:02 +01:00
parent 7255352e62
commit b8dcc04373
1 changed files with 7 additions and 2 deletions
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9
eglonxbackend.cpp
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@ -118,8 +118,13 @@ bool EglOnXBackend::initRenderingContext()
eglSurfaceAttrib(dpy, surface, EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED);
if (eglQuerySurface(dpy, surface, EGL_POST_SUB_BUFFER_SUPPORTED_NV, &surfaceHasSubPost) == EGL_FALSE) {
kError(1212) << "query surface failed";
return false;
EGLint error = eglGetError();
if (error != EGL_SUCCESS && error != EGL_BAD_ATTRIBUTE) {
kError(1212) << "query surface failed";
return false;
} else {
surfaceHasSubPost = EGL_FALSE;
}
}
const EGLint context_attribs[] = {