1 files changed, 12 insertions, 0 deletions
diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index 6ba31b25ff..e1bf1b6e6d 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -1454,6 +1454,12 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 
             gDeferredMaterialProgram[i].addPermutation("DIFFUSE_ALPHA_MODE", llformat("%d", alpha_mode));
 
+            if (alpha_mode != 0)
+            {
+                gDeferredMaterialProgram[i].mFeatures.hasAlphaMask = true;
+                gDeferredMaterialProgram[i].addPermutation("HAS_ALPHA_MASK", "1");
+            }
+
             if (use_sun_shadow)
             {
                 gDeferredMaterialProgram[i].addPermutation("HAS_SUN_SHADOW", "1");
@@ -1513,6 +1519,12 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
             }
 
             gDeferredMaterialWaterProgram[i].addPermutation("DIFFUSE_ALPHA_MODE", llformat("%d", alpha_mode));
+            if (alpha_mode != 0)
+            {
+                gDeferredMaterialWaterProgram[i].mFeatures.hasAlphaMask = true;
+                gDeferredMaterialWaterProgram[i].addPermutation("HAS_ALPHA_MASK", "1");
+            }
+
             if (use_sun_shadow)
             {
                 gDeferredMaterialWaterProgram[i].addPermutation("HAS_SUN_SHADOW", "1");