diff options
| -rw-r--r-- | src/mesa/drivers/dri/r300/radeon_lock.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/r300/radeon_lock.c b/src/mesa/drivers/dri/r300/radeon_lock.c index 84181e2e99..0d0d9ab7f0 100644 --- a/src/mesa/drivers/dri/r300/radeon_lock.c +++ b/src/mesa/drivers/dri/r300/radeon_lock.c @@ -60,7 +60,9 @@ void radeonUpdatePageFlipping(radeonContextPtr radeon) r300UpdateDrawBuffer(radeon->glCtx); } - use_back = (radeon->glCtx->DrawBuffer->_ColorDrawBufferMask[0] == BUFFER_BIT_BACK_LEFT); + use_back = radeon->glCtx->DrawBuffer ? + (radeon->glCtx->DrawBuffer->_ColorDrawBufferMask[0] == + BUFFER_BIT_BACK_LEFT) : 1; use_back ^= (radeon->sarea->pfCurrentPage == 1); if (use_back) { |