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egl: fixes for object refcounts

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eglMakeCurrent() would only deref the previous surfaces if the old and
new contexts were the same.  eglTerminate() should not touch TLS.
eglReleaseThread() needs to unbind the current context.

Change-Id: I7f4c090a287ee1e29e4708ae10679fb9d7d8c8c5
Related-Bug: 2964479
This commit is contained in:
Michael I. Gold 2010-12-23 13:51:36 -08:00 committed by Jamie Gennis
parent 0858b00d05
commit 3e52713ffd
1 changed files with 31 additions and 20 deletions
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51
opengl/libs/EGL/egl.cpp
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@ -814,7 +814,7 @@ EGLBoolean eglTerminate(EGLDisplay dpy)
dp->refs--;
dp->numTotalConfigs = 0;
delete [] dp->configs;
clearTLS();
return res;
}
@ -1150,6 +1150,27 @@ EGLBoolean eglDestroyContext(EGLDisplay dpy, EGLContext ctx)
return result;
}
static void loseCurrent(egl_context_t * cur_c)
{
if (cur_c) {
egl_surface_t * cur_r = get_surface(cur_c->read);
egl_surface_t * cur_d = get_surface(cur_c->draw);
// by construction, these are either 0 or valid (possibly terminated)
// it should be impossible for these to be invalid
ContextRef _cur_c(cur_c);
SurfaceRef _cur_r(cur_r);
SurfaceRef _cur_d(cur_d);
cur_c->read = NULL;
cur_c->draw = NULL;
_cur_c.release();
_cur_r.release();
_cur_d.release();
}
}
EGLBoolean eglMakeCurrent( EGLDisplay dpy, EGLSurface draw,
EGLSurface read, EGLContext ctx)
{
@ -1178,13 +1199,9 @@ EGLBoolean eglMakeCurrent( EGLDisplay dpy, EGLSurface draw,
// these are the current objects structs
egl_context_t * cur_c = get_context(getContext());
egl_surface_t * cur_r = NULL;
egl_surface_t * cur_d = NULL;
if (ctx != EGL_NO_CONTEXT) {
c = get_context(ctx);
cur_r = get_surface(c->read);
cur_d = get_surface(c->draw);
impl_ctx = c->context;
} else {
// no context given, use the implementation of the current context
@ -1230,30 +1247,21 @@ EGLBoolean eglMakeCurrent( EGLDisplay dpy, EGLSurface draw,
}
if (result == EGL_TRUE) {
// by construction, these are either 0 or valid (possibly terminated)
// it should be impossible for these to be invalid
ContextRef _cur_c(cur_c);
SurfaceRef _cur_r(cur_r);
SurfaceRef _cur_d(cur_d);
// cur_c has to be valid here (but could be terminated)
loseCurrent(cur_c);
if (ctx != EGL_NO_CONTEXT) {
setGlThreadSpecific(c->cnx->hooks[c->version]);
setContext(ctx);
_c.acquire();
_r.acquire();
_d.acquire();
c->read = read;
c->draw = draw;
} else {
setGlThreadSpecific(&gHooksNoContext);
setContext(EGL_NO_CONTEXT);
}
_cur_c.release();
_r.acquire();
_cur_r.release();
if (c) c->read = read;
_d.acquire();
_cur_d.release();
if (c) c->draw = draw;
}
return result;
}
@ -1637,6 +1645,9 @@ EGLenum eglQueryAPI(void)
EGLBoolean eglReleaseThread(void)
{
// If there is context bound to the thread, release it
loseCurrent(get_context(getContext()));
for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
egl_connection_t* const cnx = &gEGLImpl[i];
if (cnx->dso) {