This ensures that the DrawableGone callback gets called as necessary when the X drawable goes away. Otherwise, using a GLX drawable (say, glXSwapBuffers) in indirect mode after the X drawable has been destroyed will crash the server.
Signed-off-by: Kristian Høgsberg <[email protected]> Reviewed-by: Michel Dänzer <[email protected]> --- glx/glxcmds.c | 12 ++++++++++++ glx/glxext.c | 11 +++++++++++ 2 files changed, 23 insertions(+), 0 deletions(-) diff --git a/glx/glxcmds.c b/glx/glxcmds.c index 77afbf4..04c6d40 100644 --- a/glx/glxcmds.c +++ b/glx/glxcmds.c @@ -161,7 +161,11 @@ validGlxDrawable(ClientPtr client, XID id, int type, int access_mode, return FALSE; } + /* If the ID of the glx drawable we looked up doesn't match the id + * we looked for, it's because we looked it up under the X + * drawable ID (see DoCreateGLXDrawable). */ if (rc == BadValue || + (*drawable)->drawId != id || (type != GLX_DRAWABLE_ANY && type != (*drawable)->type)) { client->errorValue = id; switch (type) { @@ -1128,6 +1132,14 @@ DoCreateGLXDrawable(ClientPtr client, __GLXscreen *pGlxScreen, __GLXconfig *conf return BadAlloc; } + /* Add the glx drawable under the XID of the underlying X drawable + * too. That way we'll get a callback in DrawableGone and can + * clean up properly when the drawable is destroyed. */ + if (!AddResource(pDraw->id, __glXDrawableRes, pGlxDraw)) { + pGlxDraw->destroy (pGlxDraw); + return BadAlloc; + } + return Success; } diff --git a/glx/glxext.c b/glx/glxext.c index 59bcfbe..89e58b0 100644 --- a/glx/glxext.c +++ b/glx/glxext.c @@ -126,6 +126,17 @@ static Bool DrawableGone(__GLXdrawable *glxPriv, XID xid) { __GLXcontext *c; + /* If this drawable was created using glx 1.3 drawable + * constructors, we added it as a glx drawable resource under both + * its glx drawable ID and it X drawable ID. Remove the other + * resource now so we don't a callback for freed memory. */ + if (glxPriv->drawId != glxPriv->pDraw->id) { + if (xid == glxPriv->drawId) + FreeResourceByType(glxPriv->pDraw->id, __glXDrawableRes, TRUE); + else + FreeResourceByType(glxPriv->drawId, __glXDrawableRes, TRUE); + } + for (c = glxAllContexts; c; c = c->next) { if (c->isCurrent && (c->drawPriv == glxPriv || c->readPriv == glxPriv)) { int i; -- 1.7.0.1 _______________________________________________ [email protected]: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel
