If EGL_KHR_surfaceless_context is used then glViewport can be called with NULL for the draw and read surfaces. This was previously causing a crash because the i965 driver tries to use this point to invalidate the surfaces and it was derferencing the NULL pointer.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=93257 Cc: Nanley Chery <nanley.g.ch...@intel.com> Cc: "11.1" <mesa-sta...@lists.freedesktop.org> --- I've also posted a Piglit test for this here: http://patchwork.freedesktop.org/patch/67356/ src/mesa/drivers/dri/i965/brw_context.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c index 7d7643c..5374bad 100644 --- a/src/mesa/drivers/dri/i965/brw_context.c +++ b/src/mesa/drivers/dri/i965/brw_context.c @@ -159,8 +159,10 @@ intel_viewport(struct gl_context *ctx) __DRIcontext *driContext = brw->driContext; if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) { - dri2InvalidateDrawable(driContext->driDrawablePriv); - dri2InvalidateDrawable(driContext->driReadablePriv); + if (driContext->driDrawablePriv) + dri2InvalidateDrawable(driContext->driDrawablePriv); + if (driContext->driReadablePriv) + dri2InvalidateDrawable(driContext->driReadablePriv); } } -- 1.9.3 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev