From fce068bc56ff8b081a46921d15a3def721bc5298 Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Fri, 20 Sep 2013 11:40:13 -0700
Subject: NORSPEC-292 fix regression of materials bug from mismerge of release
 to bear

---
 indra/newview/llvovolume.cpp | 30 +++++++++++++++++++++++++++---
 1 file changed, 27 insertions(+), 3 deletions(-)

(limited to 'indra')

diff --git a/indra/newview/llvovolume.cpp b/indra/newview/llvovolume.cpp
index 183799af24..c52fe78cf2 100755
--- a/indra/newview/llvovolume.cpp
+++ b/indra/newview/llvovolume.cpp
@@ -2619,6 +2619,7 @@ void LLVOVolume::setLightTextureID(LLUUID id)
 		if (hasLightTexture())
 		{
 			setParameterEntryInUse(LLNetworkData::PARAMS_LIGHT_IMAGE, FALSE, true);
+			parameterChanged(LLNetworkData::PARAMS_LIGHT_IMAGE, true);
 			mLightTexture = NULL;
 		}
 	}		
@@ -2636,7 +2637,8 @@ void LLVOVolume::setSpotLightParams(LLVector3 params)
 		
 void LLVOVolume::setIsLight(BOOL is_light)
 {
-	if (is_light != getIsLight())
+	BOOL was_light = getIsLight();
+	if (is_light != was_light)
 	{
 		if (is_light)
 		{
@@ -2821,7 +2823,7 @@ void LLVOVolume::updateSpotLightPriority()
 bool LLVOVolume::isLightSpotlight() const
 {
 	LLLightImageParams* params = (LLLightImageParams*) getParameterEntry(LLNetworkData::PARAMS_LIGHT_IMAGE);
-	if (params)
+	if (params && getParameterEntryInUse(LLNetworkData::PARAMS_LIGHT_IMAGE))
 	{
 		return params->isLightSpotlight();
 	}
@@ -3751,8 +3753,30 @@ BOOL LLVOVolume::lineSegmentIntersect(const LLVector4a& start, const LLVector4a&
 			{
 				LLFace* face = mDrawable->getFace(face_hit);				
 
+				bool ignore_alpha = false;
+
+				const LLTextureEntry* te = face->getTextureEntry();
+				if (te)
+				{
+					LLMaterial* mat = te->getMaterialParams();
+					if (mat)
+					{
+						U8 mode = mat->getDiffuseAlphaMode();
+
+						if (mode == LLMaterial::DIFFUSE_ALPHA_MODE_EMISSIVE ||
+							mode == LLMaterial::DIFFUSE_ALPHA_MODE_NONE)
+						{
+							ignore_alpha = true;
+						}
+					}
+				}
+
 				if (face &&
-					(pick_transparent || !face->getTexture() || !face->getTexture()->hasGLTexture() || face->getTexture()->getMask(face->surfaceToTexture(tc, p, n))))
+					(ignore_alpha ||
+					pick_transparent || 
+					!face->getTexture() || 
+					!face->getTexture()->hasGLTexture() || 
+					face->getTexture()->getMask(face->surfaceToTexture(tc, p, n))))
 				{
 					local_end = p;
 					if (face_hitp != NULL)
-- 
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