5 files changed, 18 insertions, 11 deletions
diff --git a/indra/llrender/llglslshader.cpp b/indra/llrender/llglslshader.cpp
index 5a6f3d8292..6b2852670a 100644
--- a/indra/llrender/llglslshader.cpp
+++ b/indra/llrender/llglslshader.cpp
@@ -66,7 +66,7 @@ BOOL shouldChange(const LLVector4& v1, const LLVector4& v2)
 LLShaderFeatures::LLShaderFeatures()
 : calculatesLighting(false), isShiny(false), isFullbright(false), hasWaterFog(false),
 hasTransport(false), hasSkinning(false), hasObjectSkinning(false), hasAtmospherics(false), isSpecular(false),
-hasGamma(false), hasLighting(false), calculatesAtmospherics(false), mIndexedTextureChannels(0), disableTextureIndex(false),
+hasGamma(false), hasLighting(false), isAlphaLighting(false), calculatesAtmospherics(false), mIndexedTextureChannels(0), disableTextureIndex(false),
 hasAlphaMask(false)
 {
 }
diff --git a/indra/llrender/llglslshader.h b/indra/llrender/llglslshader.h
index 2a6c050eac..00b4b0dbd4 100644
--- a/indra/llrender/llglslshader.h
+++ b/indra/llrender/llglslshader.h
@@ -36,6 +36,7 @@ public:
 	bool calculatesLighting;
 	bool calculatesAtmospherics;
 	bool hasLighting; // implies no transport (it's possible to have neither though)
+	bool isAlphaLighting; // indicates lighting shaders need not be linked in (lighting performed directly in alpha shader to match deferred lighting functions)
 	bool isShiny;
 	bool isFullbright; // implies no lighting
 	bool isSpecular;
diff --git a/indra/llrender/llshadermgr.cpp b/indra/llrender/llshadermgr.cpp
index 85c4bab7a9..1a03aeebb7 100644
--- a/indra/llrender/llshadermgr.cpp
+++ b/indra/llrender/llshadermgr.cpp
@@ -107,10 +107,13 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
 			{
 				return FALSE;
 			}
-			
-			if (!shader->attachObject("lighting/sumLightsSpecularV.glsl"))
+		
+			if (!features->isAlphaLighting)
 			{
-				return FALSE;
+				if (!shader->attachObject("lighting/sumLightsSpecularV.glsl"))
+				{
+					return FALSE;
+				}
 			}
 			
 			if (!shader->attachObject("lighting/lightSpecularV.glsl"))
@@ -125,9 +128,12 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
 				return FALSE;
 			}
 			
-			if (!shader->attachObject("lighting/sumLightsV.glsl"))
+			if (!features->isAlphaLighting)
 			{
-				return FALSE;
+				if (!shader->attachObject("lighting/sumLightsV.glsl"))
+				{
+					return FALSE;
+				}
 			}
 			
 			if (!shader->attachObject("lighting/lightV.glsl"))
@@ -296,7 +302,7 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
 				}
 				shader->mFeatures.mIndexedTextureChannels = llmax(LLGLSLShader::sIndexedTextureChannels-1, 1);
 			}
-		}		
+		}
 	}
 	
 	// NOTE order of shader object attaching is VERY IMPORTANT!!!
diff --git a/indra/newview/app_settings/shaders/class1/deferred/alphaSkinnedV.glsl b/indra/newview/app_settings/shaders/class1/deferred/alphaSkinnedV.glsl
index b09441f7eb..0170ad4b55 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/alphaSkinnedV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/alphaSkinnedV.glsl
@@ -30,7 +30,6 @@ ATTRIBUTE vec3 normal;
 ATTRIBUTE vec4 diffuse_color;
 ATTRIBUTE vec2 texcoord0;
 
-vec4 calcLighting(vec3 pos, vec3 norm, vec4 color, vec4 baseCol);
 mat4 getObjectSkinnedTransform();
 void calcAtmospherics(vec3 inPositionEye);
 
@@ -38,8 +37,6 @@ float calcDirectionalLight(vec3 n, vec3 l);
 
 vec3 atmosAmbient(vec3 light);
 vec3 atmosAffectDirectionalLight(float lightIntensity);
-vec3 scaleDownLight(vec3 light);
-vec3 scaleUpLight(vec3 light);
 
 VARYING vec3 vary_position;
 VARYING vec3 vary_ambient;
diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index bddc07b395..5de363e03c 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -1103,11 +1103,12 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 	{
 		gDeferredSkinnedAlphaProgram.mName = "Deferred Skinned Alpha Shader";
 		gDeferredSkinnedAlphaProgram.mFeatures.hasObjectSkinning = true;
-		gDeferredSkinnedAlphaProgram.mFeatures.calculatesLighting = true;
 		gDeferredSkinnedAlphaProgram.mFeatures.calculatesAtmospherics = true;
 		gDeferredSkinnedAlphaProgram.mFeatures.hasGamma = true;
 		gDeferredSkinnedAlphaProgram.mFeatures.hasAtmospherics = true;
+		gDeferredSkinnedAlphaProgram.mFeatures.calculatesLighting = true;
 		gDeferredSkinnedAlphaProgram.mFeatures.hasLighting = true;
+		gDeferredSkinnedAlphaProgram.mFeatures.isAlphaLighting = true;
 		gDeferredSkinnedAlphaProgram.mFeatures.disableTextureIndex = true;
 		gDeferredSkinnedAlphaProgram.mShaderFiles.clear();
 		gDeferredSkinnedAlphaProgram.mShaderFiles.push_back(make_pair("deferred/alphaSkinnedV.glsl", GL_VERTEX_SHADER_ARB));
@@ -1235,6 +1236,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredAlphaProgram.mFeatures.hasGamma = true;
 		gDeferredAlphaProgram.mFeatures.hasAtmospherics = true;
 		gDeferredAlphaProgram.mFeatures.hasLighting = true;
+		gDeferredAlphaProgram.mFeatures.isAlphaLighting = true;
 		gDeferredAlphaProgram.mFeatures.disableTextureIndex = true; //hack to disable auto-setup of texture channels
 		if (mVertexShaderLevel[SHADER_DEFERRED] < 1)
 		{
@@ -1398,6 +1400,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredAvatarAlphaProgram.mFeatures.hasGamma = true;
 		gDeferredAvatarAlphaProgram.mFeatures.hasAtmospherics = true;
 		gDeferredAvatarAlphaProgram.mFeatures.hasLighting = true;
+		gDeferredAvatarAlphaProgram.mFeatures.isAlphaLighting = true;
 		gDeferredAvatarAlphaProgram.mFeatures.disableTextureIndex = true;
 		gDeferredAvatarAlphaProgram.mShaderFiles.clear();
 		gDeferredAvatarAlphaProgram.mShaderFiles.push_back(make_pair("deferred/avatarAlphaV.glsl", GL_VERTEX_SHADER_ARB));