merge changes for latest rendering fixes

19 files changed, 231 insertions, 192 deletions

diff --git a/indra/newview/app_settings/shaders/class1/avatar/objectSkinV.glsl b/indra/newview/app_settings/shaders/class1/avatar/objectSkinV.glsl
index ff30560adc..2745d5fd95 100644
--- a/indra/newview/app_settings/shaders/class1/avatar/objectSkinV.glsl
+++ b/indra/newview/app_settings/shaders/class1/avatar/objectSkinV.glsl
@@ -30,24 +30,18 @@ uniform mat4 matrixPalette[64];
 
 mat4 getObjectSkinnedTransform()
 {
+	int i; 
 	
-	float w0 = fract(weight4.x);
-	float w1 = fract(weight4.y);
-	float w2 = fract(weight4.z);
-	float w3 = fract(weight4.w);
-			
-	int i0 = int(floor(weight4.x));
-	int i1 = int(floor(weight4.y));
-	int i2 = int(floor(weight4.z));
-	int i3 = int(floor(weight4.w));
-
-	//float scale = 1.0/(w.x+w.y+w.z+w.w);
-	//w *= scale;
+	vec4 w = fract(weight4);
+	vec4 index = floor(weight4);
+	
+	float scale = 1.0/(w.x+w.y+w.z+w.w);
+	w *= scale;
 	
-	mat4 mat = matrixPalette[i0]*w0;
-	mat += matrixPalette[i1]*w1;
-	mat += matrixPalette[i2]*w2;
-	mat += matrixPalette[i3]*w3;
+	mat4 mat = matrixPalette[int(index.x)]*w.x;
+	mat += matrixPalette[int(index.y)]*w.y;
+	mat += matrixPalette[int(index.z)]*w.z;
+	mat += matrixPalette[int(index.w)]*w.w;
 		
 	return mat;
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl b/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
index d175d2b518..9f1fdb4385 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl
@@ -35,7 +35,7 @@ out vec4 frag_color;
 #define frag_color gl_FragColor
 #endif
 
-#if INDEX_MODE != INDEXED
+#ifdef USE_DIFFUSE_TEX
 uniform sampler2D diffuseMap;
 #endif
 
@@ -52,7 +52,7 @@ VARYING vec3 vary_pointlight_col;
 VARYING vec2 vary_texcoord0;
 VARYING vec3 vary_norm;
 
-#if INDEX_MODE != NON_INDEXED_NO_COLOR
+#ifdef USE_VERTEX_COLOR
 VARYING vec4 vertex_color;
 #endif
 
@@ -104,16 +104,18 @@ void main()
 	
 	vec4 pos = vec4(vary_position, 1.0);
 	
-#if INDEX_MODE == INDEXED
+#ifdef USE_INDEXED_TEX
 	vec4 diff = diffuseLookup(vary_texcoord0.xy);
 #else
 	vec4 diff = texture2D(diffuseMap,vary_texcoord0.xy);
 #endif
-	diff.rgb = pow(diff.rgb, vec3(2.2));
-#if INDEX_MODE == NON_INDEXED_NO_COLOR
-	float vertex_color_alpha = 1.0;
+
+	diff.rgb = pow(diff.rgb, vec3(2.2f, 2.2f, 2.2f));
+
+#ifdef USE_VERTEX_COLOR
+	float vertex_color_alpha = vertex_color.a;	
 #else
-	float vertex_color_alpha = vertex_color.a;
+	float vertex_color_alpha = 1.0;
 #endif
 	
 	vec3 normal = vary_norm; 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/alphaV.glsl b/indra/newview/app_settings/shaders/class1/deferred/alphaV.glsl
index 4c26621a88..77d02b36ff 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/alphaV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/alphaV.glsl
@@ -34,25 +34,31 @@ uniform mat4 modelview_matrix;
 uniform mat4 modelview_projection_matrix;
 
 ATTRIBUTE vec3 position;
-#if INDEX_MODE == INDEXED
+
+#ifdef USE_INDEXED_TEX
 void passTextureIndex();
 #endif
+
 ATTRIBUTE vec3 normal;
-#if INDEX_MODE != NON_INDEXED_NO_COLOR
+
+#ifdef USE_VERTEX_COLOR
 ATTRIBUTE vec4 diffuse_color;
 #endif
+
 ATTRIBUTE vec2 texcoord0;
 
-#if HAS_SKIN
+#ifdef HAS_SKIN
 mat4 getObjectSkinnedTransform();
-#elif IS_AVATAR_SKIN
+#else
+#ifdef IS_AVATAR_SKIN
 mat4 getSkinnedTransform();
 #endif
+#endif
 
 vec4 calcLighting(vec3 pos, vec3 norm, vec4 color, vec4 baseCol);
 void calcAtmospherics(vec3 inPositionEye);
 
-float calcDirectionalLight(vec3 n, vec3 l);
+vec3 calcDirectionalLight(vec3 n, vec3 l);
 
 vec3 atmosAmbient(vec3 light);
 vec3 atmosAffectDirectionalLight(float lightIntensity);
@@ -65,7 +71,7 @@ VARYING vec3 vary_fragcoord;
 VARYING vec3 vary_position;
 VARYING vec3 vary_pointlight_col;
 
-#if INDEX_MODE != NON_INDEXED_NO_COLOR
+#ifdef USE_VERTEX_COLOR
 VARYING vec4 vertex_color;
 #endif
 
@@ -80,13 +86,13 @@ uniform vec3 light_direction[8];
 uniform vec3 light_attenuation[8]; 
 uniform vec3 light_diffuse[8];
 
-float calcDirectionalLight(vec3 n, vec3 l)
+vec3 calcDirectionalLight(vec3 n, vec3 l)
 {
         float a = max(dot(n,l),0.0);
-        return a;
+        return vec3(a,a,a);
 }
 
-float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight)
+vec3 calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight)
 {
 	//get light vector
 	vec3 lv = lp.xyz-v;
@@ -113,7 +119,7 @@ float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, floa
 		da *= max(dot(n, lv), 0.0);		
 	}
 
-	return da;	
+	return vec3(da,da,da);	
 }
 
 void main()
@@ -122,7 +128,7 @@ void main()
 	vec3 norm;
 	
 	//transform vertex
-#if HAS_SKIN
+#ifdef HAS_SKIN
 	mat4 trans = getObjectSkinnedTransform();
 	trans = modelview_matrix * trans;
 	
@@ -132,7 +138,9 @@ void main()
 	norm = normalize((trans * vec4(norm, 1.0)).xyz - pos.xyz);
 	vec4 frag_pos = projection_matrix * pos;
 	gl_Position = frag_pos;
-#elif IS_AVATAR_SKIN
+#else
+
+#ifdef IS_AVATAR_SKIN
 	mat4 trans = getSkinnedTransform();
 	vec4 pos_in = vec4(position.xyz, 1.0);
 	pos.x = dot(trans[0], pos_in);
@@ -154,7 +162,9 @@ void main()
 	gl_Position = modelview_projection_matrix*vec4(position.xyz, 1.0);
 #endif
 	
-#if INDEX_MODE == INDEXED
+#endif
+
+#ifdef USE_INDEXED_TEX
 	passTextureIndex();
 	vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
 #else
@@ -166,34 +176,46 @@ void main()
 
 	calcAtmospherics(pos.xyz);
 
-#if INDEX_MODE == NON_INDEXED_NO_COLOR
+#ifndef USE_VERTEX_COLOR
 	vec4 diffuse_color = vec4(1,1,1,1);
 #endif
 	//vec4 color = calcLighting(pos.xyz, norm, diffuse_color, vec4(0.));
 	vec4 col = vec4(0.0, 0.0, 0.0, diffuse_color.a);
 	
-	vary_pointlight_col = diffuse_color.rgb;
+	vec3 diff = pow(diffuse_color.rgb, vec3(2.2));
+
+	
+
+	vary_pointlight_col = diff;
+
 	
 	col.rgb = vec3(0,0,0);
 
 	// Add windlight lights
-	col.rgb = atmosAmbient(vec3(0.));
+	col.rgb = atmosAmbient(col.rgb);
+	
+	vary_ambient = col.rgb*diff.rgb;
+
+	vary_directional.rgb = atmosAffectDirectionalLight(1.0f);
 	
-	vary_ambient = col.rgb*diffuse_color.rgb;
-	vary_directional.rgb = atmosAffectDirectionalLight(1);
+	col.rgb = col.rgb*diff.rgb;
 	
-	col.rgb = col.rgb*diffuse_color.rgb;
-#if INDEX_MODE != NON_INDEXED_NO_COLOR
+#ifdef USE_VERTEX_COLOR
 	vertex_color = col;
 #endif
 	
-#if HAS_SKIN
+#ifdef HAS_SKIN
 	vary_fragcoord.xyz = frag_pos.xyz + vec3(0,0,near_clip);
-#elif IS_AVATAR_SKIN
+#else
+
+#ifdef IS_AVATAR_SKIN
 	vary_fragcoord.xyz = pos.xyz + vec3(0,0,near_clip);
 #else
 	pos = modelview_projection_matrix * vert;
 	vary_fragcoord.xyz = pos.xyz + vec3(0,0,near_clip);
 #endif
 	
+#endif
+
 }
+
diff --git a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
index 5e75cc3ce6..b3c1a067ee 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl
@@ -29,7 +29,8 @@
 #define DIFFUSE_ALPHA_MODE_EMISSIVE 3
 
 
-#if DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND
+#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
+
 #ifdef DEFINE_GL_FRAGCOLOR
 out vec4 frag_color;
 #else
@@ -349,29 +350,32 @@ vec3 atmosGetDiffuseSunlightColor()
 
 vec3 scaleDownLight(vec3 light)
 {
-	return (light / scene_light_strength );
+	return (light / vec3(scene_light_strength, scene_light_strength, scene_light_strength));
 }
 
 vec3 scaleUpLight(vec3 light)
 {
-	return (light * scene_light_strength);
+	return (light * vec3(scene_light_strength, scene_light_strength, scene_light_strength));
 }
 
 vec3 atmosAmbient(vec3 light)
 {
-	return getAmblitColor() + light / 2.0;
+	return getAmblitColor() + (light * vec3(0.5f, 0.5f, 0.5f));
 }
 
 vec3 atmosAffectDirectionalLight(float lightIntensity)
 {
-	return getSunlitColor() * lightIntensity;
+	return getSunlitColor() * vec3(lightIntensity, lightIntensity, lightIntensity);
 }
 
 vec3 scaleSoftClip(vec3 light)
 {
 	//soft clip effect:
-	light = 1. - clamp(light, vec3(0.), vec3(1.));
-	light = 1. - pow(light, gamma.xxx);
+    vec3 zeroes = vec3(0.0f, 0.0f, 0.0f);
+    vec3 ones   = vec3(1.0f, 1.0f, 1.0f);
+
+	light = ones - clamp(light, zeroes, ones);
+	light = ones - pow(light, gamma.xxx);
 
 	return light;
 }
@@ -399,7 +403,7 @@ VARYING vec2 vary_texcoord2;
 uniform float env_intensity;
 uniform vec4 specular_color;
 
-#if DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_MASK
+#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_MASK)
 uniform float minimum_alpha;
 #endif
 
@@ -426,14 +430,14 @@ void main()
 	vec4 diffcol = texture2D(diffuseMap, vary_texcoord0.xy);
 	diffcol.rgb *= vertex_color.rgb;
 
-#if DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_MASK
+#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_MASK)
 	if (diffcol.a < minimum_alpha)
 	{
 		discard;
 	}
 #endif
 
-#if DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND
+#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
 	diffcol.rgb = pow(diffcol.rgb, vec3(2.2));
 #endif
 
@@ -456,9 +460,12 @@ void main()
 	vec3 tnorm = vary_normal;
 #endif
 
+    norm.xyz = tnorm;
+    norm.xyz = normalize(norm.xyz);
+
 	vec4 final_color = diffcol;
 	
-#if DIFFUSE_ALPHA_MODE != DIFFUSE_ALPHA_MODE_EMISSIVE
+#if (DIFFUSE_ALPHA_MODE != DIFFUSE_ALPHA_MODE_EMISSIVE)
 	final_color.a = 0;
 #endif
 
@@ -475,8 +482,7 @@ void main()
 #endif
 	
 
-#if DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND
-	{
+#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
 		//forward rendering, output just lit RGBA
 	vec3 pos = vary_position;
 
@@ -549,26 +555,27 @@ void main()
 	float shadow = 1.0;
 #endif
 
+	spec = final_specular;
 		vec4 diffuse = final_color;
-		vec3 norm = normalize(tnorm);
-		vec4 spec = final_specular;
 		float envIntensity = final_normal.z;
 
-		vec3 col;
+    vec3 col = vec3(0.0f,0.0f,0.0f);
+
 		float bloom = 0.0;
-		{
 			calcAtmospherics(pos.xyz, 1.0);
 	
-			float da = max(dot(norm.xyz, sun_dir.xyz), 0.0);
+	vec3 refnormpersp = normalize(reflect(pos.xyz, norm.xyz));
 
-			da = pow(da, 0.7);
+	float da =dot(norm.xyz, sun_dir.xyz);
+    float final_da = pow(da, 0.7f);
+          final_da = min(final_da, shadow);
+          final_da = max(final_da, diffuse.a);
+          final_da = max(final_da, 0.0f);
 
-			col = atmosAmbient(vec3(0));
-			col += atmosAffectDirectionalLight(max(min(da, shadow), diffuse.a));
-	
-			col *= diffuse.rgb;
+	col.rgb = atmosAmbient(col);
+	col.rgb = col.rgb + atmosAffectDirectionalLight(final_da);
+	col.rgb *= diffuse.rgb;
 	
-			vec3 refnormpersp = normalize(reflect(pos.xyz, norm.xyz));
 
 			if (spec.a > 0.0) // specular reflection
 			{
@@ -595,33 +602,10 @@ void main()
 			col = atmosLighting(col);
 			col = scaleSoftClip(col);
 
-			//col = mix(col.rgb, diffuse.rgb, diffuse.a);
-		}
-	
-		vec3 light_col = vec3(0,0,0);
-
 		vec3 npos = normalize(-pos.xyz);
 
-		
-		/*vec3 calcPointLightOrSpotLight(
-			vec3 light_col, 
-			vec3 npos, 
-			vec3 diffuse, 
-			vec4 spec, 
-			vec3 v, 
-			vec3 n, 
-			vec4 lp, 
-			vec3 ln, 
-			float la, 
-			float fa, 
-			float is_pointlight)
-
-		*/
-
-	/*
-#ifdef MAC_GEFORCE_HACK
  #define LIGHT_LOOP(i) \
-		light_col += calcPointLightOrSpotLight(light_diffuse[i].rgb, npos, diffuse.rgb, final_specular, pos.xyz, norm, light_position[i], light_direction[i], light_attenuation[i].x, light_attenuation[i].y, light_attenuation[i].z);
+	col.rgb = col.rgb + calcPointLightOrSpotLight(light_diffuse[i].rgb, npos, diffuse.rgb, final_specular, pos.xyz, norm.xyz, light_position[i], light_direction[i].xyz, light_attenuation[i].x, light_attenuation[i].y, light_attenuation[i].z);
 
 		LIGHT_LOOP(1)
 		LIGHT_LOOP(2)
@@ -630,34 +614,19 @@ void main()
 		LIGHT_LOOP(5)
 		LIGHT_LOOP(6)
 		LIGHT_LOOP(7)
-#else*/
-	for (int i = 2; i < 8; i++)
-	{
-		light_col += calcPointLightOrSpotLight(
-			light_diffuse[i].rgb, 
-			npos, 
-			diffuse.rgb, 
-			final_specular, 
-			pos.xyz, 
-			norm, 
-			light_position[i], 
-			light_direction[i], 
-			light_attenuation[i].x, 
-			light_attenuation[i].y, 
-			light_attenuation[i].z);
-	}
-//#endif
-
-		col += light_col;
-		frag_color.rgb = col;
-		
-	}
-
 
+	frag_color.rgb = col.rgb;
 	frag_color.a = diffcol.a*vertex_color.a;
 
 #else
 	frag_data[0] = final_color;
+
+#ifdef UGLY_MAC_HACK
+	// magic spec exp clamp fixes rendering artifacts on older mac GF drivers
+	//
+	final_specular = min(final_specular, vec4(1.0f, 1.0f, 1.0f, 0.125f));
+#endif
+
 	frag_data[1] = final_specular; // XYZ = Specular color. W = Specular exponent.
 	frag_data[2] = final_normal; // XY = Normal.  Z = Env. intensity.
 #endif
diff --git a/indra/newview/app_settings/shaders/class1/deferred/materialV.glsl b/indra/newview/app_settings/shaders/class1/deferred/materialV.glsl
index f578795abe..0638dcfa55 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/materialV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/materialV.glsl
@@ -37,7 +37,8 @@ uniform mat3 normal_matrix;
 uniform mat4 modelview_projection_matrix;
 #endif
 
-#if DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND
+#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
+
 #if !HAS_SKIN
 uniform mat4 modelview_matrix;
 #endif
@@ -84,7 +85,7 @@ void main()
 
 	vec3 pos = (mat*vec4(position.xyz,1.0)).xyz;
 
-#if DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND
+#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
 	vary_position = pos;
 #endif
 
@@ -134,7 +135,7 @@ vary_normal  = n;
 	
 	vertex_color = diffuse_color;
 
-#if DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND
+#if (DIFFUSE_ALPHA_MODE == DIFFUSE_ALPHA_MODE_BLEND)
 #if !HAS_SKIN
 	vary_position = (modelview_matrix*vec4(position.xyz, 1.0)).xyz;
 #endif
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyF.glsl
index 777c8b45bb..c8282e9a51 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyF.glsl
@@ -50,7 +50,7 @@ void fullbright_shiny_lighting()
 
 	color.rgb = fullbrightScaleSoftClip(color.rgb);
 
-	color.a = max(color.a, vertex_color.a);
+	color.a = 1.0;
 
 	frag_color = color;
 }
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyNonIndexedF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyNonIndexedF.glsl
index 4fa3b1d939..e7dbd4bbd2 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyNonIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyNonIndexedF.glsl
@@ -51,7 +51,7 @@ void fullbright_shiny_lighting()
 
 	color.rgb = fullbrightScaleSoftClip(color.rgb);
 
-	color.a = max(color.a, vertex_color.a);
+	color.a = 1.0;
 
 	frag_color = color;
 }
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyWaterF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyWaterF.glsl
index 58984a4263..5886fc65be 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyWaterF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyWaterF.glsl
@@ -48,7 +48,7 @@ void fullbright_shiny_lighting_water()
 
 	color.rgb = fullbrightShinyAtmosTransport(color.rgb);
 	color.rgb = fullbrightScaleSoftClip(color.rgb);
-	color.a = max(color.a, vertex_color.a);
+	color.a = 1.0;
 
 	frag_color = applyWaterFog(color);
 }
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyWaterNonIndexedF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyWaterNonIndexedF.glsl
index a39b7205d7..cddc7d8df8 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyWaterNonIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightFullbrightShinyWaterNonIndexedF.glsl
@@ -49,7 +49,7 @@ void fullbright_shiny_lighting_water()
 
 	color.rgb = fullbrightShinyAtmosTransport(color.rgb);
 	color.rgb = fullbrightScaleSoftClip(color.rgb);
-	color.a = max(color.a, vertex_color.a);
+	color.a = 1.0;
 
 	frag_color = applyWaterFog(color);
 }
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightShinyF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightShinyF.glsl
index 52e3b2ad02..9208c148ef 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightShinyF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightShinyF.glsl
@@ -50,7 +50,7 @@ void shiny_lighting()
 	color.rgb = atmosLighting(color.rgb);
 
 	color.rgb = scaleSoftClip(color.rgb);
-	color.a = max(color.a, vertex_color.a);
+	color.a = 1.0;
 	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightShinyNonIndexedF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightShinyNonIndexedF.glsl
index 474d5ea496..92628faa68 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightShinyNonIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightShinyNonIndexedF.glsl
@@ -51,7 +51,7 @@ void shiny_lighting()
 	color.rgb = atmosLighting(color.rgb);
 
 	color.rgb = scaleSoftClip(color.rgb);
-	color.a = max(color.a, vertex_color.a);
+	color.a = 1.0;
 	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightShinyWaterF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightShinyWaterF.glsl
index d2a4c47aac..61841674e2 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightShinyWaterF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightShinyWaterF.glsl
@@ -47,7 +47,7 @@ void shiny_lighting_water()
 	color.rgb = mix(color.rgb, envColor.rgb, vertex_color.a);
 
 	color.rgb = atmosLighting(color.rgb);
-	color.a = max(color.a, vertex_color.a);
+	color.a = 1.0;
 	frag_color = applyWaterFog(color);
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightShinyWaterNonIndexedF.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightShinyWaterNonIndexedF.glsl
index f3bd662364..0b6e835fd0 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightShinyWaterNonIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightShinyWaterNonIndexedF.glsl
@@ -48,7 +48,7 @@ void shiny_lighting_water()
 	color.rgb = mix(color.rgb, envColor.rgb, vertex_color.a);
 
 	color.rgb = atmosLighting(color.rgb);
-	color.a = max(color.a, vertex_color.a);
+	color.a = 1.0;
 	frag_color = applyWaterFog(color);
 }
 
diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
index db58c19057..73c85c0419 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
@@ -25,10 +25,6 @@
 
 #extension GL_ARB_texture_rectangle : enable
 
-#define INDEXED 1
-#define NON_INDEXED 2
-#define NON_INDEXED_NO_COLOR 3
-
 #ifdef DEFINE_GL_FRAGCOLOR
 out vec4 frag_color;
 #else
@@ -40,7 +36,7 @@ uniform sampler2DShadow shadowMap1;
 uniform sampler2DShadow shadowMap2;
 uniform sampler2DShadow shadowMap3;
 
-#if INDEX_MODE != INDEXED
+#ifdef USE_DIFFUSE_TEX
 uniform sampler2D diffuseMap;
 #endif
 
@@ -58,7 +54,7 @@ VARYING vec3 vary_pointlight_col;
 VARYING vec2 vary_texcoord0;
 VARYING vec3 vary_norm;
 
-#if INDEX_MODE != NON_INDEXED_NO_COLOR
+#ifdef USE_VERTEX_COLOR
 VARYING vec4 vertex_color;
 #endif
 
@@ -198,20 +194,23 @@ void main()
 	}
 
 	vec4 diff;
-#if INDEX_MODE == INDEXED	
+
+#ifdef USE_INDEXED_TEX
 	diff = diffuseLookup(vary_texcoord0.xy);
-#else
+#endif
+
+#ifdef USE_DIFFUSE_TEX
 	diff = texture2D(diffuseMap,vary_texcoord0.xy);
 #endif
-	diff.rgb = pow(diff.rgb, vec3(2.2));
-#if INDEX_MODE == NON_INDEXED_NO_COLOR
+	diff.rgb = pow(diff.rgb, vec3(2.2f, 2.2f, 2.2f));
+
 	float vertex_color_alpha = 1.0;
-#else
-	float vertex_color_alpha = vertex_color.a;
+
+#ifdef USE_VERTEX_COLOR
+	vertex_color_alpha = vertex_color.a;	
 #endif
 
 	vec3 normal = vary_norm;
-	
 	vec3 l = light_position[0].xyz;
 	vec3 dlight = calcDirectionalLight(normal, l);
 	     dlight = dlight * vary_directional.rgb * vary_pointlight_col;
@@ -220,9 +219,9 @@ void main()
 	vec4 color = diff * col;
 	
 	color.rgb = atmosLighting(color.rgb);
-
 	color.rgb = scaleSoftClip(color.rgb);
-	col = vec4(0,0,0,0);
+
+	col = vec4(0.0f,0.0f,0.0f,0.0f);
 
   #define LIGHT_LOOP(i) \
 		col.rgb += light_diffuse[i].rgb * calcPointLightOrSpotLight(pos.xyz, normal, light_position[i], light_direction[i].xyz, light_attenuation[i].x, light_attenuation[i].y, light_attenuation[i].z);
diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl
index 46fd8da4f8..127c1709b8 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl
@@ -23,10 +23,6 @@
  * $/LicenseInfo$
  */
 
-#define INDEXED 1
-#define NON_INDEXED 2
-#define NON_INDEXED_NO_COLOR 3
-
 uniform mat3 normal_matrix;
 uniform mat4 texture_matrix0;
 uniform mat4 projection_matrix;
@@ -34,25 +30,31 @@ uniform mat4 modelview_matrix;
 uniform mat4 modelview_projection_matrix;
 
 ATTRIBUTE vec3 position;
-#if INDEX_MODE == INDEXED
+
+#ifdef USE_INDEXED_TEX
 void passTextureIndex();
 #endif
+
 ATTRIBUTE vec3 normal;
-#if INDEX_MODE != NON_INDEXED_NO_COLOR
+
+#ifdef USE_VERTEX_COLOR
 ATTRIBUTE vec4 diffuse_color;
 #endif
+
 ATTRIBUTE vec2 texcoord0;
 
-#if HAS_SKIN
+#ifdef HAS_SKIN
 mat4 getObjectSkinnedTransform();
-#elif IS_AVATAR_SKIN
+#else
+#ifdef IS_AVATAR_SKIN
 mat4 getSkinnedTransform();
 #endif
+#endif
 
 vec4 calcLighting(vec3 pos, vec3 norm, vec4 color, vec4 baseCol);
 void calcAtmospherics(vec3 inPositionEye);
 
-float calcDirectionalLight(vec3 n, vec3 l);
+vec3 calcDirectionalLight(vec3 n, vec3 l);
 
 vec3 atmosAmbient(vec3 light);
 vec3 atmosAffectDirectionalLight(float lightIntensity);
@@ -65,12 +67,11 @@ VARYING vec3 vary_fragcoord;
 VARYING vec3 vary_position;
 VARYING vec3 vary_pointlight_col;
 
-#if INDEX_MODE != NON_INDEXED_NO_COLOR
+#ifdef USE_VERTEX_COLOR
 VARYING vec4 vertex_color;
 #endif
 
 VARYING vec2 vary_texcoord0;
-
 VARYING vec3 vary_norm;
 
 uniform float near_clip;
@@ -82,13 +83,13 @@ uniform vec3 light_direction[8];
 uniform vec3 light_attenuation[8]; 
 uniform vec3 light_diffuse[8];
 
-float calcDirectionalLight(vec3 n, vec3 l)
+vec3 calcDirectionalLight(vec3 n, vec3 l)
 {
         float a = max(dot(n,l),0.0);
-        return a;
+        return vec3(a,a,a);
 }
 
-float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight)
+vec3 calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight)
 {
 	//get light vector
 	vec3 lv = lp.xyz-v;
@@ -115,7 +116,7 @@ float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, floa
 		da *= max(dot(n, lv), 0.0);		
 	}
 
-	return da;	
+	return vec3(da,da,da);	
 }
 
 void main()
@@ -124,7 +125,7 @@ void main()
 	vec3 norm;
 	
 	//transform vertex
-#if HAS_SKIN
+#ifdef HAS_SKIN
 	mat4 trans = getObjectSkinnedTransform();
 	trans = modelview_matrix * trans;
 	
@@ -134,7 +135,9 @@ void main()
 	norm = normalize((trans * vec4(norm, 1.0)).xyz - pos.xyz);
 	vec4 frag_pos = projection_matrix * pos;
 	gl_Position = frag_pos;
-#elif IS_AVATAR_SKIN
+#else
+
+#ifdef IS_AVATAR_SKIN
 	mat4 trans = getSkinnedTransform();
 	vec4 pos_in = vec4(position.xyz, 1.0);
 	pos.x = dot(trans[0], pos_in);
@@ -156,7 +159,9 @@ void main()
 	gl_Position = modelview_projection_matrix*vec4(position.xyz, 1.0);
 #endif
 	
-#if INDEX_MODE == INDEXED
+#endif
+
+#ifdef USE_INDEXED_TEX
 	passTextureIndex();
 	vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
 #else
@@ -169,37 +174,42 @@ void main()
 	
 	calcAtmospherics(pos.xyz);
 
-#if INDEX_MODE == NON_INDEXED_NO_COLOR
+#ifndef USE_VERTEX_COLOR
 	vec4 diffuse_color = vec4(1,1,1,1);
 #endif
 
 	//vec4 color = calcLighting(pos.xyz, norm, diffuse_color, vec4(0.));
 	vec4 col = vec4(0.0, 0.0, 0.0, diffuse_color.a);
 
-	vec3 dff = pow(diffuse_color.rgb, vec3(2.2));
+	vec3 dff = pow(diffuse_color.rgb, vec3(2.2f,2.2f,2.2f));
 
 	vary_pointlight_col = dff;
 
 	col.rgb = vec3(0,0,0);
 
 	// Add windlight lights
-	col.rgb = atmosAmbient(vec3(0.));
+	col.rgb = atmosAmbient(col.rgb);
 	
-	vary_directional.rgb = atmosAffectDirectionalLight(1);
+	vary_directional.rgb = atmosAffectDirectionalLight(1.0f);
 	vary_ambient = col.rgb*dff;
 	
 	col.rgb = col.rgb*dff;
 	
-#if INDEX_MODE != NON_INDEXED_NO_COLOR
+#ifdef USE_VERTEX_COLOR
 	vertex_color = col;
 #endif
 	
-#if HAS_SKIN
+#ifdef HAS_SKIN
 	vary_fragcoord.xyz = frag_pos.xyz + vec3(0,0,near_clip);
-#elif IS_AVATAR_SKIN
+#else
+
+#ifdef IS_AVATAR_SKIN
 	vary_fragcoord.xyz = pos.xyz + vec3(0,0,near_clip);
 #else
 	pos = modelview_projection_matrix * vert;
 	vary_fragcoord.xyz = pos.xyz + vec3(0,0,near_clip);
 #endif
+
+#endif
+
 }
diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index edd1546263..850bf9677c 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -792,9 +792,6 @@ BOOL LLViewerShaderMgr::loadBasicShaders()
 	// Load basic dependency shaders first
 	// All of these have to load for any shaders to function
 	
-#if LL_DARWIN // Mac can't currently handle all 8 lights, 
-	S32 sum_lights_class = 2;
-#else 
 	S32 sum_lights_class = 3;
 
 	// class one cards will get the lower sum lights
@@ -805,7 +802,6 @@ BOOL LLViewerShaderMgr::loadBasicShaders()
 	{
 		sum_lights_class = 2;
 	}
-#endif
 
 	// If we have sun and moon only checked, then only sum those lights.
 	if (gPipeline.getLightingDetail() == 0)
@@ -813,6 +809,14 @@ BOOL LLViewerShaderMgr::loadBasicShaders()
 		sum_lights_class = 1;
 	}
 
+#if LL_DARWIN
+	// Work around driver crashes on older Macs when using deferred rendering
+	// NORSPEC-59
+	//
+	if (gGLManager.mIsMobileGF)
+		sum_lights_class = 3;
+#endif
+	
 	// Use the feature table to mask out the max light level to use.  Also make sure it's at least 1.
 	S32 max_light_class = gSavedSettings.getS32("RenderShaderLightingMaxLevel");
 	sum_lights_class = llclamp(sum_lights_class, 1, max_light_class);
@@ -1218,9 +1222,9 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredSkinnedAlphaProgram.mShaderFiles.push_back(make_pair("deferred/alphaV.glsl", GL_VERTEX_SHADER_ARB));
 		gDeferredSkinnedAlphaProgram.mShaderFiles.push_back(make_pair("deferred/alphaF.glsl", GL_FRAGMENT_SHADER_ARB));
 		gDeferredSkinnedAlphaProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
-		gDeferredSkinnedAlphaProgram.addPermutation("INDEX_MODE", "2");
+		gDeferredSkinnedAlphaProgram.addPermutation("USE_DIFFUSE_TEX", "1");
+		gDeferredSkinnedAlphaProgram.addPermutation("USE_VERTEX_COLOR", "1");
 		gDeferredSkinnedAlphaProgram.addPermutation("HAS_SKIN", "1");
-		gDeferredSkinnedAlphaProgram.addPermutation("IS_AVATAR_SKIN", "0");
 		success = gDeferredSkinnedAlphaProgram.createShader(NULL, NULL);
 		
 		// Hack to include uniforms for lighting without linking in lighting file
@@ -1265,6 +1269,16 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 			gDeferredMaterialProgram[i].addPermutation("HAS_SUN_SHADOW", mVertexShaderLevel[SHADER_DEFERRED] > 1 ? "1" : "0");
 			bool has_skin = i & 0x10;
 			gDeferredMaterialProgram[i].addPermutation("HAS_SKIN",has_skin ? "1" : "0");
+
+		#if LL_DARWIN
+			// include spec exp clamp to fix older mac rendering artifacts
+			//
+			if (gGLManager.mIsMobileGF)
+			{
+				gDeferredMaterialProgram[i].addPermutation("UGLY_MAC_HACK","1");
+			}
+		#endif
+
 			if (has_skin)
 			{
 				gDeferredMaterialProgram[i].mFeatures.hasObjectSkinning = true;
@@ -1414,9 +1428,8 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredAlphaProgram.mShaderFiles.clear();
 		gDeferredAlphaProgram.mShaderFiles.push_back(make_pair("deferred/alphaV.glsl", GL_VERTEX_SHADER_ARB));
 		gDeferredAlphaProgram.mShaderFiles.push_back(make_pair("deferred/alphaF.glsl", GL_FRAGMENT_SHADER_ARB));
-		gDeferredAlphaProgram.addPermutation("INDEX_MODE", "1");
-		gDeferredAlphaProgram.addPermutation("HAS_SKIN", "0");
-		gDeferredAlphaProgram.addPermutation("IS_AVATAR_SKIN", "0");
+		gDeferredAlphaProgram.addPermutation("USE_INDEXED_TEX", "1");
+		gDeferredAlphaProgram.addPermutation("USE_VERTEX_COLOR", "1");
 		gDeferredAlphaProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 		success = gDeferredAlphaProgram.createShader(NULL, NULL);
 
@@ -1592,8 +1605,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredAvatarAlphaProgram.mShaderFiles.clear();
 		gDeferredAvatarAlphaProgram.mShaderFiles.push_back(make_pair("deferred/alphaV.glsl", GL_VERTEX_SHADER_ARB));
 		gDeferredAvatarAlphaProgram.mShaderFiles.push_back(make_pair("deferred/alphaF.glsl", GL_FRAGMENT_SHADER_ARB));
-		gDeferredAvatarAlphaProgram.addPermutation("INDEX_MODE", "3");
-		gDeferredAvatarAlphaProgram.addPermutation("HAS_SKIN", "0");
+		gDeferredAvatarAlphaProgram.addPermutation("USE_DIFFUSE_TEX", "1");
 		gDeferredAvatarAlphaProgram.addPermutation("IS_AVATAR_SKIN", "1");
 		gDeferredAvatarAlphaProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
 
diff --git a/indra/newview/llvoavatar.cpp b/indra/newview/llvoavatar.cpp
index f861f49296..f5b8244509 100644
--- a/indra/newview/llvoavatar.cpp
+++ b/indra/newview/llvoavatar.cpp
@@ -4336,6 +4336,15 @@ U32 LLVOAvatar::renderTransparent(BOOL first_pass)
 		gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
 	}
 
+#if LL_DARWIN
+    // blatant hack to avoid driver crash on rendering mMeshLODs for eyelashes and baked hair below
+    // NORSPEC-59
+    if (gGLManager.mIsMobileGF)
+    {
+        return num_indices;
+    }
+#endif
+
 	if (!isSelf() || gAgent.needsRenderHead() || LLPipeline::sShadowRender)
 	{
 		if (LLPipeline::sImpostorRender)
diff --git a/indra/newview/llvovolume.cpp b/indra/newview/llvovolume.cpp
index 1e32e7628f..edd47b68c3 100644
--- a/indra/newview/llvovolume.cpp
+++ b/indra/newview/llvovolume.cpp
@@ -4043,6 +4043,7 @@ void LLVolumeGeometryManager::registerFace(LLSpatialGroup* group, LLFace* facep,
 
 	BOOL fullbright = (type == LLRenderPass::PASS_FULLBRIGHT) ||
 		(type == LLRenderPass::PASS_INVISIBLE) ||
+		(type == LLRenderPass::PASS_FULLBRIGHT_ALPHA_MASK) ||
 		(type == LLRenderPass::PASS_ALPHA && facep->isState(LLFace::FULLBRIGHT));
 	
 	if (!fullbright && type != LLRenderPass::PASS_GLOW && !facep->getVertexBuffer()->hasDataType(LLVertexBuffer::TYPE_NORMAL))
@@ -4082,7 +4083,7 @@ void LLVolumeGeometryManager::registerFace(LLSpatialGroup* group, LLFace* facep,
 
 	U8 index = facep->getTextureIndex();
 	
-	LLMaterial* mat = LLPipeline::sRenderDeferred ? facep->getTextureEntry()->getMaterialParams().get() : NULL; 
+	LLMaterial* mat = facep->getTextureEntry()->getMaterialParams().get(); 
 
 	bool batchable = false;
 
@@ -4781,7 +4782,7 @@ void LLVolumeGeometryManager::rebuildGeom(LLSpatialGroup* group)
 		fullbright_mask = fullbright_mask | LLVertexBuffer::MAP_TEXTURE_INDEX;
 	}
 
-	genDrawInfo(group, simple_mask | LLVertexBuffer::MAP_TEXTURE_INDEX, simple_faces, FALSE, batch_textures, TRUE);
+	genDrawInfo(group, simple_mask | LLVertexBuffer::MAP_TEXTURE_INDEX, simple_faces, FALSE, batch_textures, FALSE);
 	genDrawInfo(group, fullbright_mask | LLVertexBuffer::MAP_TEXTURE_INDEX, fullbright_faces, FALSE, batch_textures);
 	genDrawInfo(group, alpha_mask | LLVertexBuffer::MAP_TEXTURE_INDEX, alpha_faces, TRUE, batch_textures);
 	genDrawInfo(group, bump_mask | LLVertexBuffer::MAP_TEXTURE_INDEX, bump_faces, FALSE, FALSE);
@@ -5248,6 +5249,14 @@ void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::
 		
 			LLMaterial* mat = te->getMaterialParams().get();
 
+			bool can_be_shiny = true;
+			if (mat)
+			{
+				U8 mode = mat->getDiffuseAlphaMode();
+				can_be_shiny = mode == LLMaterial::DIFFUSE_ALPHA_MODE_NONE ||
+								mode == LLMaterial::DIFFUSE_ALPHA_MODE_EMISSIVE;
+			}
+
 			if (mat && LLPipeline::sRenderDeferred && !hud_group)
 			{
 				if (fullbright)
@@ -5325,7 +5334,8 @@ void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::
 			}
 			else if (gPipeline.canUseVertexShaders()
 				&& LLPipeline::sRenderBump 
-				&& te->getShiny())
+				&& te->getShiny() 
+				&& can_be_shiny)
 			{ //shiny
 				if (tex->getPrimaryFormat() == GL_ALPHA)
 				{ //invisiprim+shiny
@@ -5369,7 +5379,14 @@ void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::
 				}
 				else if (fullbright || bake_sunlight)
 				{ //fullbright
-					registerFace(group, facep, LLRenderPass::PASS_FULLBRIGHT);
+					if (mat && mat->getDiffuseAlphaMode() == LLMaterial::DIFFUSE_ALPHA_MODE_MASK)
+					{
+						registerFace(group, facep, LLRenderPass::PASS_FULLBRIGHT_ALPHA_MASK);
+					}
+					else
+					{
+						registerFace(group, facep, LLRenderPass::PASS_FULLBRIGHT);
+					}
 					if (LLPipeline::sRenderDeferred && !hud_group && LLPipeline::sRenderBump && te->getBumpmap())
 					{ //if this is the deferred render and a bump map is present, register in post deferred bump
 						registerFace(group, facep, LLRenderPass::PASS_POST_BUMP);
@@ -5384,7 +5401,14 @@ void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::
 					else
 					{ //all around simple
 						llassert(mask & LLVertexBuffer::MAP_NORMAL);
-						registerFace(group, facep, LLRenderPass::PASS_SIMPLE);
+						if (mat && mat->getDiffuseAlphaMode() == LLMaterial::DIFFUSE_ALPHA_MODE_MASK)
+						{ //material alpha mask can be respected in non-deferred
+							registerFace(group, facep, LLRenderPass::PASS_ALPHA_MASK);
+						}
+						else
+						{
+							registerFace(group, facep, LLRenderPass::PASS_SIMPLE);
+						}
 					}
 				}
 				
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index ca5adc6180..1957345b6d 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -917,6 +917,11 @@ bool LLPipeline::allocateScreenBuffer(U32 resX, U32 resY, U32 samples)
 		{
 			screenFormat = GL_RGBA12;
 		}
+
+		if (gGLManager.mGLVersion < 4.f && gGLManager.mIsNVIDIA)
+		{
+			screenFormat = GL_RGBA16F_ARB;
+		}
 		
 		if (!mScreen.allocate(resX, resY, screenFormat, FALSE, FALSE, LLTexUnit::TT_RECT_TEXTURE, FALSE, samples)) return false;
 		if (samples > 0)
@@ -1672,14 +1677,7 @@ U32 LLPipeline::getPoolTypeFromTE(const LLTextureEntry* te, LLViewerTexture* ima
 				alpha = false;
 				break;
 			default: //alpha mode set to "mask", go to alpha pool if fullbright
-				if (te->getFullbright())
-				{ 
-					alpha = true;
-				}
-				else
-				{
-					alpha = false; // Material's alpha mode is set to none, mask, or emissive.  Toss it into the opaque material draw pool.
-				}
+				alpha = false; // Material's alpha mode is set to none, mask, or emissive.  Toss it into the opaque material draw pool.
 				break;
 		}
 	}
@@ -10040,7 +10038,6 @@ void LLPipeline::generateSunShadow(LLCamera& camera)
 			{
 				static LLCullResult result[4];
 
-				//LLGLEnable enable(GL_DEPTH_CLAMP_NV);
 				renderShadow(view[j], proj[j], shadow_cam, result[j], TRUE, TRUE, target_width);
 			}