diff options
| author | Neil Roberts <neil@linux.intel.com> | 2015-12-08 16:35:57 +0000 |
|---|---|---|
| committer | Neil Roberts <neil@linux.intel.com> | 2015-12-16 16:39:29 +0000 |
| commit | 8c5310da9d1cbf2272f72d3ed4264544456a4683 (patch) | |
| tree | 2dd498f0a1780d69c0e3fdda6195475fc3984223 | |
| parent | 4c7c9e4602b6ff72eb2ef41be4ba780d44d37440 (diff) | |
i965: Fix crash when calling glViewport with no surface bound
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.chery@intel.com>
Cc: "11.1" <mesa-stable@lists.freedesktop.org>
Tested-by: Nanley Chery <nanley.g.chery@intel.com>
Reviewed-by: Nanley Chery <nanley.g.chery@intel.com>
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_context.c | 6 |
1 files 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 0abe60124f4..de4bc2cd220 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); } } |