Mesa (master): llvmpipe: fix occlusion queries on big-endian.

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Module: Mesa
Branch: master
Commit: b743c9bf2d5c987c97a22e725a56a2b641b58ae4
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=b743c9bf2d5c987c97a22e725a56a2b641b58ae4

Author: Dave Airlie <airlied at redhat.com>
Date:   Mon Jun 29 15:57:14 2020 +1000

llvmpipe: fix occlusion queries on big-endian.

Casting to u8 arrays and picking the lowest byte is fairly LE specific
grab the other byte.

Cc: <mesa-stable at lists.freedesktop.org>

Reviewed-by: Roland Scheidegger <sroland at vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5679>

---

 src/gallium/drivers/llvmpipe/lp_bld_depth.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/gallium/drivers/llvmpipe/lp_bld_depth.c b/src/gallium/drivers/llvmpipe/lp_bld_depth.c
index ed28d212df3..64cf72ae101 100644
--- a/src/gallium/drivers/llvmpipe/lp_bld_depth.c
+++ b/src/gallium/drivers/llvmpipe/lp_bld_depth.c
@@ -469,7 +469,11 @@ lp_build_occlusion_count(struct gallivm_state *gallivm,
       countv = LLVMBuildBitCast(builder, countv, i8vntype, "");
 
        for (i = 0; i < type.length; i++) {
+#if UTIL_ARCH_LITTLE_ENDIAN
           shuffles[i] = lp_build_const_int32(gallivm, 4*i);
+#else
+          shuffles[i] = lp_build_const_int32(gallivm, (4*i) + 3);
+#endif
        }
 
        shufflev = LLVMConstVector(shuffles, type.length);