1 files changed, 28 insertions, 80 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
index 3a3e871ade..9bba45bc4e 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
@@ -30,14 +30,14 @@
 #extension GL_ARB_texture_rectangle : enable
 #extension GL_ARB_shader_texture_lod : enable
 
+/*[EXTRA_CODE_HERE]*/
+
 #ifdef DEFINE_GL_FRAGCOLOR
 out vec4 frag_color;
 #else
 #define frag_color gl_FragColor
 #endif
 
-/*[EXTRA_CODE_HERE]*/
-
 uniform sampler2DRect diffuseRect;
 uniform sampler2DRect specularRect;
 uniform sampler2DRect depthMap;
@@ -71,60 +71,8 @@ VARYING vec4 vary_fragcoord;
 uniform vec2 screen_res;
 
 uniform mat4 inv_proj;
-
-vec2 encode_normal(vec3 n)
-{
-	float f = sqrt(8 * n.z + 8);
-	return n.xy / f + 0.5;
-}
-
-vec3 decode_normal (vec2 enc)
-{
-    vec2 fenc = enc*4-2;
-    float f = dot(fenc,fenc);
-    float g = sqrt(1-f/4);
-    vec3 n;
-    n.xy = fenc*g;
-    n.z = 1-f/2;
-    return n;
-}
-vec3 srgb_to_linear(vec3 cs)
-{
-	vec3 low_range = cs / vec3(12.92);
-	vec3 high_range = pow((cs+vec3(0.055))/vec3(1.055), vec3(2.4));
-	bvec3 lte = lessThanEqual(cs,vec3(0.04045));
-
-#ifdef OLD_SELECT
-	vec3 result;
-	result.r = lte.r ? low_range.r : high_range.r;
-	result.g = lte.g ? low_range.g : high_range.g;
-	result.b = lte.b ? low_range.b : high_range.b;
-    return result;
-#else
-	return mix(high_range, low_range, lte);
-#endif
-
-}
-
-vec3 linear_to_srgb(vec3 cl)
-{
-	cl = clamp(cl, vec3(0), vec3(1));
-	vec3 low_range  = cl * 12.92;
-	vec3 high_range = 1.055 * pow(cl, vec3(0.41666)) - 0.055;
-	bvec3 lt = lessThan(cl,vec3(0.0031308));
-
-#ifdef OLD_SELECT
-	vec3 result;
-	result.r = lt.r ? low_range.r : high_range.r;
-	result.g = lt.g ? low_range.g : high_range.g;
-	result.b = lt.b ? low_range.b : high_range.b;
-    return result;
-#else
-	return mix(high_range, low_range, lt);
-#endif
-
-}
-
+vec3 getNorm(vec2 pos_screen);
+vec3 srgb_to_linear(vec3 c);
 
 vec4 texture2DLodSpecular(sampler2D projectionMap, vec2 tc, float lod)
 {
@@ -178,22 +126,15 @@ vec4 texture2DLodAmbient(sampler2D projectionMap, vec2 tc, float lod)
 	return ret;
 }
 
-
-vec4 getPosition(vec2 pos_screen)
-{
-	float depth = texture2DRect(depthMap, pos_screen.xy).r;
-	vec2 sc = pos_screen.xy*2.0;
-	sc /= screen_res;
-	sc -= vec2(1.0,1.0);
-	vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0);
-	vec4 pos = inv_proj * ndc;
-	pos /= pos.w;
-	pos.w = 1.0;
-	return pos;
-}
+vec4 getPosition(vec2 pos_screen);
 
 void main() 
 {
+	vec3 col = vec3(0,0,0);
+
+#if defined(LOCAL_LIGHT_KILL)
+    discard;
+#else
 	vec4 frag = vary_fragcoord;
 	frag.xyz /= frag.w;
 	frag.xyz = frag.xyz*0.5+0.5;
@@ -208,12 +149,9 @@ void main()
 		discard;
 	}
 		
-	vec3 norm = texture2DRect(normalMap, frag.xy).xyz;
-	float envIntensity = norm.z;
+	float envIntensity = texture2DRect(normalMap, frag.xy).z;
+	vec3 norm = getNorm(frag.xy);
 
-	norm = decode_normal(norm.xy);
-	
-	norm = normalize(norm);
 	float l_dist = -dot(lv, proj_n);
 	
 	vec4 proj_tc = (proj_mat * vec4(pos.xyz, 1.0));
@@ -225,25 +163,33 @@ 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 dist_atten = clamp(1.0-(dist-1.0*(1.0-fa))/fa, 0.0, 1.0);
 	dist_atten *= dist_atten;
 	dist_atten *= 2.0;
+	
 
 	if (dist_atten <= 0.0)
 	{
 		discard;
 	}
 	
+	float noise = texture2D(noiseMap, frag.xy/128.0).b;
+	dist_atten *= noise;
+
 	lv = proj_origin-pos.xyz;
 	lv = normalize(lv);
 	float da = dot(norm, lv);
 		
-	vec3 col = vec3(0,0,0);
 		
 	vec3 diff_tex = texture2DRect(diffuseRect, frag.xy).rgb;
+    // SL-12005 Projector light pops as we get closer, more objectionable than being in wrong color space.
+    //          We can't switch to linear here unless we do it everywhere*
+	// *gbuffer is sRGB, convert to linear whenever sampling from it
+    diff_tex.rgb = srgb_to_linear(diff_tex.rgb);
+
 	vec3 dlit = vec3(0, 0, 0);
 	
-	float noise = texture2D(noiseMap, frag.xy/128.0).b;
+	
 	if (proj_tc.z > 0.0 &&
 		proj_tc.x < 1.0 &&
 		proj_tc.y < 1.0 &&
@@ -262,7 +208,7 @@ void main()
 		
 			dlit = color.rgb * plcol.rgb * plcol.a;
 			
-			lit = da * dist_atten * noise;
+			lit = da * dist_atten;
 			
 			col = dlit*lit*diff_tex;
 			amb_da += (da*0.5)*proj_ambiance;
@@ -304,7 +250,7 @@ void main()
 			col += dlit*scol*spec.rgb;
 			//col += spec.rgb;
 		}
-	}	
+	}
 
 	if (envIntensity > 0.0)
 	{
@@ -334,7 +280,9 @@ void main()
 			}
 		}
 	}
-	
+#endif
+
+	//output linear, sum of lights will be gamma corrected later	
 	frag_color.rgb = col;	
 	frag_color.a = 0.0;
 }