From: Brian <brian@i915.localnet.net>
Date: Mon, 30 Jul 2007 23:15:50 +0000 (-0600)
Subject: compute scale for Z24 buffers
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=6558af67d380f2855b112ea3ce4dded9215c7cf7;p=mesa.git

compute scale for Z24 buffers
---

diff --git a/src/mesa/pipe/softpipe/sp_quad_depth_test.c b/src/mesa/pipe/softpipe/sp_quad_depth_test.c
index d47c4c42b8f..a26bd51d846 100644
--- a/src/mesa/pipe/softpipe/sp_quad_depth_test.c
+++ b/src/mesa/pipe/softpipe/sp_quad_depth_test.c
@@ -59,6 +59,8 @@ sp_depth_test_quad(struct quad_stage *qs, struct quad_header *quad)
     */
    if (sps->surface.format == PIPE_FORMAT_U_Z16)
       scale = 65535.0;
+   else if (sps->surface.format == PIPE_FORMAT_Z24_S8)
+      scale = (float) ((1 << 24) - 1);
    else
       assert(0);  /* XXX fix this someday */