DRTVWR-4976 Misc shader cleanup.

Removed some potential div-by-0 NaNs and a mangled clamp.

2 files changed, 5 insertions, 5 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/cloudsV.glsl b/indra/newview/app_settings/shaders/class1/deferred/cloudsV.glsl
index b59862bb3b..b7036e02cf 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/cloudsV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/cloudsV.glsl
@@ -99,11 +99,11 @@ void main()
     altitude_blend_factor = clamp((rel_pos.y + 512.0) / max_y, 0.0, 1.0);
 
     // Set altitude
-    if (rel_pos.y > 0.)
+    if (rel_pos.y > 0)
     {
         rel_pos *= (max_y / rel_pos.y);
     }
-    else
+    if (rel_pos.y < 0)
     {
         altitude_blend_factor = 0;  // SL-11589 Fix clouds drooping below horizon
         rel_pos *= (-32000. / rel_pos.y);
diff --git a/indra/newview/app_settings/shaders/class1/deferred/skyV.glsl b/indra/newview/app_settings/shaders/class1/deferred/skyV.glsl
index b35a32dbbf..28a1faf24f 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/skyV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/skyV.glsl
@@ -71,12 +71,12 @@ void main()
     // Get relative position
     vec3 rel_pos = position.xyz - camPosLocal.xyz + vec3(0, 50, 0);
 
-    // Set altitude
-    if (rel_pos.y > 0.)
+    // Adj position vector to clamp altitude
+    if (rel_pos.y > 0)
     {
         rel_pos *= (max_y / rel_pos.y);
     }
-    else
+    if (rel_pos.y < 0)
     {
         rel_pos *= (-32000. / rel_pos.y);
     }