llvmpipe: don't store eo as 64bit int

eo, just like dcdx and dcdy, cannot overflow 32bit.
Store it as unsigned though just in case (it cannot be negative, but
in theory twice as big as dcdx or dcdy so this gives it one more bit).
This doesn't really change anything, albeit it might help minimally on
32bit archs.

Reviewed-by: Jose Fonseca <[email protected]>
Reviewed-by: Brian Paul <[email protected]>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_setup.c b/src/gallium/drivers/llvmpipe/lp_setup.c
index ddbb88eb107..bd850519468 100644
--- a/src/gallium/drivers/llvmpipe/lp_setup.c
+++ b/src/gallium/drivers/llvmpipe/lp_setup.c
@@ -486,6 +486,11 @@ lp_setup_try_clear_zs(struct lp_setup_context *setup,
                                    depth,
                                    stencil);
 
+   /*
+    * XXX: should make a full mask here for things like D24X8,
+    * otherwise we'll do a read-modify-write clear later which
+    * should be unnecessary.
+    */
    zsmask = util_pack64_mask_z_stencil(setup->fb.zsbuf->format,
                                        zmask32,
                                        smask8);