From 9eea451a82379a61fa4a6cc2a55274e06cecbd58 Mon Sep 17 00:00:00 2001
From: Dave Parks <davep@lindenlab.com>
Date: Wed, 25 May 2011 15:51:15 -0500
Subject: SH-469 Don't use depth buffers and multisample buffers where not
 absolutely needed -- make sample counts consistent between shaders and render
 targets.

---
 .../shaders/class2/deferred/multiSpotLightMSF.glsl | 26 +++++++++++-----------
 .../shaders/class2/deferred/softenLightMSF.glsl    |  9 ++++----
 .../shaders/class2/deferred/spotLightMSF.glsl      | 24 ++++++++++----------
 3 files changed, 30 insertions(+), 29 deletions(-)

(limited to 'indra/newview/app_settings/shaders/class2/deferred')

diff --git a/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightMSF.glsl b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightMSF.glsl
index c6f0ea2a5d..d0f9101774 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightMSF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightMSF.glsl
@@ -14,7 +14,7 @@ uniform sampler2DMS diffuseRect;
 uniform sampler2DMS specularRect;
 uniform sampler2DMS depthMap;
 uniform sampler2DMS normalMap;
-uniform sampler2DMS lightMap;
+uniform sampler2DRect lightMap;
 uniform sampler2D noiseMap;
 uniform sampler2D lightFunc;
 uniform sampler2D projectionMap;
@@ -112,6 +112,17 @@ void main()
 	
 	ivec2 itc = ivec2(frag.xy);
 
+	float shadow = 1.0;
+
+	if (proj_shadow_idx >= 0)
+	{
+		vec4 shd = texture2DRect(lightMap, frag);
+		float sh[2];
+		sh[0] = shd.b;
+		sh[1] = shd.a;
+		shadow = min(sh[proj_shadow_idx]+shadow_fade, 1.0);
+	}
+		
 	for (int i = 0; i < samples; i++)
 	{
 		vec3 pos = getPosition(itc, i).xyz;
@@ -120,17 +131,6 @@ void main()
 		dist2 /= vary_light.w;
 		if (dist2 <= 1.0)
 		{
-			float shadow = 1.0;
-	
-			if (proj_shadow_idx >= 0)
-			{
-				vec4 shd = texelFetch(lightMap, itc, i);
-				float sh[2];
-				sh[0] = shd.b;
-				sh[1] = shd.a;
-				shadow = min(sh[proj_shadow_idx]+shadow_fade, 1.0);
-			}
-	
 			vec3 norm = texelFetch(normalMap, itc, i).xyz;
 			norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm
 	
@@ -239,6 +239,6 @@ void main()
 		discard;
 	}
 
-	gl_FragColor.rgb = fcol/wght;	
+	gl_FragColor.rgb = fcol/samples;	
 	gl_FragColor.a = 0.0;
 }
diff --git a/indra/newview/app_settings/shaders/class2/deferred/softenLightMSF.glsl b/indra/newview/app_settings/shaders/class2/deferred/softenLightMSF.glsl
index 71482d0c7b..cb09fe9895 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/softenLightMSF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/softenLightMSF.glsl
@@ -13,7 +13,7 @@
 uniform sampler2DMS diffuseRect;
 uniform sampler2DMS specularRect;
 uniform sampler2DMS normalMap;
-uniform sampler2DMS lightMap;
+uniform sampler2DRect lightMap;
 uniform sampler2DMS depthMap;
 uniform sampler2D	  noiseMap;
 uniform samplerCube environmentMap;
@@ -257,7 +257,8 @@ void main()
 
 	vec3 fcol = vec3(0,0,0);
 
-	float amb = 0;
+	vec2 scol_ambocc = texture2DRect(lightMap, tc).rg;
+	float ambocc = scol_ambocc.g;
 
 	for (int i = 0; i < samples; ++i)
 	{
@@ -271,9 +272,9 @@ void main()
 		vec4 diffuse = texelFetch(diffuseRect, itc, i);
 		vec4 spec = texelFetch(specularRect, itc, i);
 	
-		vec2 scol_ambocc = texelFetch(lightMap, itc, i).rg;
+		float amb = 0;
+
 		float scol = max(scol_ambocc.r, diffuse.a); 
-		float ambocc = scol_ambocc.g;
 		amb += ambocc;
 
 		calcAtmospherics(pos.xyz, ambocc);
diff --git a/indra/newview/app_settings/shaders/class2/deferred/spotLightMSF.glsl b/indra/newview/app_settings/shaders/class2/deferred/spotLightMSF.glsl
index 099a45718a..8d6ffd79c5 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/spotLightMSF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/spotLightMSF.glsl
@@ -14,7 +14,7 @@ uniform sampler2DMS diffuseRect;
 uniform sampler2DMS specularRect;
 uniform sampler2DMS depthMap;
 uniform sampler2DMS normalMap;
-uniform sampler2DMS lightMap;
+uniform sampler2DRect lightMap;
 uniform sampler2D noiseMap;
 uniform sampler2D lightFunc;
 uniform sampler2D projectionMap;
@@ -113,6 +113,17 @@ void main()
 	vec3 fcol = vec3(0,0,0);
 	int wght = 0;
 
+	float shadow = 1.0;
+	
+	if (proj_shadow_idx >= 0)
+	{
+		vec4 shd = texture2DRect(lightMap, frag.xy);
+		float sh[2];
+		sh[0] = shd.b;
+		sh[1] = shd.a;
+		shadow = min(sh[proj_shadow_idx]+shadow_fade, 1.0);
+	}
+	
 	for (int i = 0; i < samples; i++)
 	{
 		vec3 pos = getPosition(itc, i).xyz;
@@ -121,17 +132,6 @@ void main()
 		dist2 /= vary_light.w;
 		if (dist2 <= 1.0)
 		{
-			float shadow = 1.0;
-	
-			if (proj_shadow_idx >= 0)
-			{
-				vec4 shd = texelFetch(lightMap, itc, i);
-				float sh[2];
-				sh[0] = shd.b;
-				sh[1] = shd.a;
-				shadow = min(sh[proj_shadow_idx]+shadow_fade, 1.0);
-			}
-	
 			vec3 norm = texelFetch(normalMap, itc, i).xyz;
 			norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm
 	
-- 
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