diff options
| author | Neil Roberts <neil@linux.intel.com> | 2015-12-08 16:35:57 +0000 |
|---|---|---|
| committer | Emil Velikov <emil.l.velikov@gmail.com> | 2016-01-08 12:05:25 +0200 |
| commit | bdf289e7fbc030651394cecc3bae43565380d591 (patch) | |
| tree | 9d80908e88cb03f70608f3fa935be30a9816274c | |
| parent | ab0b96a939b8eb48f203b8726ca5440a593716da (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>
(cherry picked from commit 8c5310da9d1cbf2272f72d3ed4264544456a4683)
| -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 5e2c369be5..b0e6e8cf5b 100644 --- a/src/mesa/drivers/dri/i965/brw_context.c +++ b/src/mesa/drivers/dri/i965/brw_context.c @@ -158,8 +158,10 @@ 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); } } |