From db091d23db70952b4ad8b610ef02942a8f13f223 Mon Sep 17 00:00:00 2001
From: Graham Linden <graham@lindenlab.com>
Date: Wed, 22 May 2019 11:00:30 -0700
Subject: SL-10969

Fix linear attenuation on forward projector lighting.

Revert setup of falloff to prev code.

Revert deferred water spec and tweak refl/refr blend.
---
 .../shaders/class2/deferred/multiSpotLightF.glsl      | 16 ++++------------
 .../shaders/class2/deferred/spotLightF.glsl           | 19 +++++++------------
 2 files changed, 11 insertions(+), 24 deletions(-)

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

diff --git a/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
index 54ec534d14..bc879948e4 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
@@ -72,20 +72,12 @@ uniform vec2 screen_res;
 uniform mat4 inv_proj;
 
 vec3 srgb_to_linear(vec3 cs);
-vec3 linear_to_srgb(vec3 cl);
-
 vec3 getNorm(vec2 pos_screen);
 
-
-vec4 correctWithGamma(vec4 col)
-{
-	return vec4(srgb_to_linear(col.rgb), col.a);
-}
-
 vec4 texture2DLodSpecular(sampler2D projectionMap, vec2 tc, float lod)
 {
     vec4 ret = texture2DLod(projectionMap, tc, lod);
-    ret = correctWithGamma(ret);
+    ret.rgb = srgb_to_linear(ret.rgb);
     vec2 dist = vec2(0.5) - abs(tc-vec2(0.5));
     
     float det = min(lod/(proj_lod*0.5), 1.0);
@@ -104,7 +96,7 @@ vec4 texture2DLodSpecular(sampler2D projectionMap, vec2 tc, float lod)
 vec4 texture2DLodDiffuse(sampler2D projectionMap, vec2 tc, float lod)
 {
     vec4 ret = texture2DLod(projectionMap, tc, lod);
-    ret = correctWithGamma(ret);
+    ret.rgb = srgb_to_linear(ret.rgb);
 
     vec2 dist = vec2(0.5) - abs(tc-vec2(0.5));
     
@@ -122,7 +114,7 @@ vec4 texture2DLodDiffuse(sampler2D projectionMap, vec2 tc, float lod)
 vec4 texture2DLodAmbient(sampler2D projectionMap, vec2 tc, float lod)
 {
     vec4 ret = texture2DLod(projectionMap, tc, lod);
-    ret = correctWithGamma(ret);
+    ret.rgb = srgb_to_linear(ret.rgb);
 
     vec2 dist = tc-vec2(0.5);
     
@@ -295,7 +287,7 @@ void main()
 
     //not sure why, but this line prevents MATBUG-194
     col = max(col, vec3(0.0));
-
+//col.rgb = vec3(0);
     frag_color.rgb = col;   
     frag_color.a = 0.0;
 }
diff --git a/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
index 2ef7cffe9d..43f283bede 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
@@ -73,15 +73,11 @@ uniform mat4 inv_proj;
 
 vec3 getNorm(vec2 pos_screen);
 vec3 srgb_to_linear(vec3 c);
-vec4 correctWithGamma(vec4 col)
-{
-	return vec4(srgb_to_linear(col.rgb), col.a);
-}
 
 vec4 texture2DLodSpecular(sampler2D projectionMap, vec2 tc, float lod)
 {
 	vec4 ret = texture2DLod(projectionMap, tc, lod);
-	ret = correctWithGamma(ret);
+	ret.rgb = srgb_to_linear(ret.rgb);
 
 	vec2 dist = vec2(0.5) - abs(tc-vec2(0.5));
 	
@@ -101,7 +97,7 @@ vec4 texture2DLodSpecular(sampler2D projectionMap, vec2 tc, float lod)
 vec4 texture2DLodDiffuse(sampler2D projectionMap, vec2 tc, float lod)
 {
 	vec4 ret = texture2DLod(projectionMap, tc, lod);
-	ret = correctWithGamma(ret);
+	ret.rgb = srgb_to_linear(ret.rgb);
 	
 	vec2 dist = vec2(0.5) - abs(tc-vec2(0.5));
 	
@@ -119,7 +115,7 @@ vec4 texture2DLodDiffuse(sampler2D projectionMap, vec2 tc, float lod)
 vec4 texture2DLodAmbient(sampler2D projectionMap, vec2 tc, float lod)
 {
 	vec4 ret = texture2DLod(projectionMap, tc, lod);
-	ret = correctWithGamma(ret);
+	ret.rgb = srgb_to_linear(ret.rgb);
 	
 	vec2 dist = tc-vec2(0.5);
 	
@@ -174,8 +170,8 @@ void main()
 	
 	proj_tc.xyz /= proj_tc.w;
 	
-	float fa = falloff + 1.0;
-	float dist_atten = min(1.0 - (dist - 1.0 * (1.0 - fa)) / fa, 1.0);
+	float fa = falloff+1.0;
+	float dist_atten = min(1.0-(dist-1.0*(1.0-fa))/fa, 1.0);
 	dist_atten *= dist_atten;
 	dist_atten *= 2.0;
 
@@ -187,8 +183,7 @@ void main()
 	lv = proj_origin-pos.xyz;
 	lv = normalize(lv);
 	float da = dot(norm, lv);
-	      da = clamp(da, 0.0, 1.0);
-	
+		
 	vec3 col = vec3(0,0,0);
 		
 	vec3 diff_tex = texture2DRect(diffuseRect, frag.xy).rgb;
@@ -294,7 +289,7 @@ void main()
 	
 	//not sure why, but this line prevents MATBUG-194
 	col = max(col, vec3(0.0));
-
+//col.rgb = vec3(0);
 	frag_color.rgb = col;	
 	frag_color.a = 0.0;
 }
-- 
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