Mesa (mesa_7_5_branch): softpipe: return alpha=1 in shadow_compare() function

[Brian Paul]

Module: Mesa
Branch: mesa_7_5_branch
Commit: 048765624598e6c60b9fe4dc82a72b7110f16715
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=048765624598e6c60b9fe4dc82a72b7110f16715

Author: Brian Paul <brianp at vmware.com>
Date:   Fri Jun 19 08:40:43 2009 -0600

softpipe: return alpha=1 in shadow_compare() function

The alpha value wasn't set at all before so we got unpredictable results.

Note that we don't currently obey GL_DEPTH_TEXTURE_MODE in the state
tracker.  For now, we return the result in the default mode (r,r,r,1).

---

 src/gallium/drivers/softpipe/sp_tex_sample.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/src/gallium/drivers/softpipe/sp_tex_sample.c b/src/gallium/drivers/softpipe/sp_tex_sample.c
index adbd0cb..5de358d 100644
--- a/src/gallium/drivers/softpipe/sp_tex_sample.c
+++ b/src/gallium/drivers/softpipe/sp_tex_sample.c
@@ -744,7 +744,9 @@ shadow_compare(uint compare_func,
       break;
    }
 
+   /* XXX returning result for default GL_DEPTH_TEXTURE_MODE = GL_LUMINANCE */
    rgba[0][j] = rgba[1][j] = rgba[2][j] = (float) k;
+   rgba[3][j] = 1.0F;
 }