Mats.

indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl

@@ -32,6 +32,7 @@ out vec4 frag_color;
 //class 1 -- no shadows
 
 #extension GL_ARB_texture_rectangle : enable
+#extension GL_ARB_shader_texture_lod : enable
 
 uniform sampler2DRect diffuseRect;
 uniform sampler2DRect specularRect;
@@ -40,6 +41,7 @@ uniform sampler2DRect normalMap;
 uniform samplerCube environmentMap;
 uniform sampler2D noiseMap;
 uniform sampler2D projectionMap;
+uniform sampler2D lightFunc;
 
 uniform mat4 proj_mat; //screen space to light space
 uniform float proj_near; //near clip for projection
@@ -66,9 +68,64 @@ 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
+
+}
+
+
 vec4 texture2DLodSpecular(sampler2D projectionMap, vec2 tc, float lod)
 {
 	vec4 ret = texture2DLod(projectionMap, tc, lod);
+	ret.rgb = srgb_to_linear(ret.rgb);
 	
 	vec2 dist = tc-vec2(0.5);
 	
@@ -84,6 +141,7 @@ vec4 texture2DLodSpecular(sampler2D projectionMap, vec2 tc, float lod)
 vec4 texture2DLodDiffuse(sampler2D projectionMap, vec2 tc, float lod)
 {
 	vec4 ret = texture2DLod(projectionMap, tc, lod);
+	ret.rgb = srgb_to_linear(ret.rgb);
 	
 	vec2 dist = vec2(0.5) - abs(tc-vec2(0.5));
 	
@@ -101,6 +159,7 @@ vec4 texture2DLodDiffuse(sampler2D projectionMap, vec2 tc, float lod)
 vec4 texture2DLodAmbient(sampler2D projectionMap, vec2 tc, float lod)
 {
 	vec4 ret = texture2DLod(projectionMap, tc, lod);
+	ret.rgb = srgb_to_linear(ret.rgb);
 	
 	vec2 dist = tc-vec2(0.5);
 	
@@ -125,20 +184,6 @@ vec4 getPosition(vec2 pos_screen)
 	return pos;
 }
 
-vec3 unpack(vec2 tc)
-{
-//#define PACK_NORMALS
-#ifdef PACK_NORMALS
-	vec2 enc = texture2DRect(normalMap, tc).xy;
-	enc = enc*4.0-2.0;
-	float prod = dot(enc,enc);
-	return vec3(enc*sqrt(1.0-prod*.25),1.0-prod*.5);
-#else
-	vec3 norm = texture2DRect(normalMap, tc).xyz;
-	return norm*2.0-1.0;
-#endif
-}
-
 void main() 
 {
 	vec4 frag = vary_fragcoord;
@@ -148,16 +193,19 @@ void main()
 	
 	vec3 pos = getPosition(frag.xy).xyz;
 	vec3 lv = center.xyz-pos.xyz;
-	float dist2 = dot(lv,lv);
-	dist2 /= size;
-	if (dist2 > 1.0)
+	float dist = length(lv);
+	dist /= size;
+	if (dist > 1.0)
 	{
 		discard;
 	}
 		
-	vec3 norm = unpack(frag.xy); // unpack norm
+	vec3 norm = texture2DRect(normalMap, frag.xy).xyz;
+	float envIntensity = norm.z;
+
+	norm = decode_normal(norm.xy);
 	
-	//norm = normalize(norm); // may be superfluous
+	norm = normalize(norm);
 	float l_dist = -dot(lv, proj_n);
 	
 	vec4 proj_tc = (proj_mat * vec4(pos.xyz, 1.0));
@@ -169,7 +217,10 @@ void main()
 	proj_tc.xyz /= proj_tc.w;
 	
 	float fa = falloff+1.0;
-	float dist_atten = min(1.0-(dist2-1.0*(1.0-fa))/fa, 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;
+
 	if (dist_atten <= 0.0)
 	{
 		discard;
@@ -182,7 +233,8 @@ void main()
 	vec3 col = vec3(0,0,0);
 		
 	vec3 diff_tex = texture2DRect(diffuseRect, frag.xy).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 &&
@@ -200,14 +252,13 @@ void main()
 			
 			vec4 plcol = texture2DLodDiffuse(projectionMap, proj_tc.xy, lod);
 		
-			vec3 lcol = color.rgb * plcol.rgb * plcol.a;
+			dlit = color.rgb * plcol.rgb * plcol.a;
 			
 			lit = da * dist_atten * noise;
 			
-			col = lcol*lit*diff_tex;
+			col = dlit*lit*diff_tex;
 			amb_da += (da*0.5)*proj_ambiance;
 		}
-		
 		//float diff = clamp((proj_range-proj_focus)/proj_range, 0.0, 1.0);
 		vec4 amb_plcol = texture2DLodAmbient(projectionMap, proj_tc.xy, proj_lod);
 							
@@ -216,13 +267,38 @@ void main()
 		amb_da *= dist_atten * noise;
 			
 		amb_da = min(amb_da, 1.0-lit);
-			
-		col += amb_da*color.rgb*diff_tex.rgb*amb_plcol.rgb*amb_plcol.a;
+		col += amb_da*color.rgb*diff_tex*amb_plcol.rgb*amb_plcol.a;
 	}
 	
 	
 	vec4 spec = texture2DRect(specularRect, frag.xy);
+	
 	if (spec.a > 0.0)
+	{
+		dlit *= min(da*6.0, 1.0) * dist_atten;
+
+		vec3 npos = -normalize(pos);
+
+		//vec3 ref = dot(pos+lv, norm);
+		vec3 h = normalize(lv+npos);
+		float nh = dot(norm, h);
+		float nv = dot(norm, npos);
+		float vh = dot(npos, h);
+		float sa = nh;
+		float fres = pow(1 - dot(h, npos), 5)*0.4+0.5;
+
+		float gtdenom = 2 * nh;
+		float gt = max(0, min(gtdenom * nv / vh, gtdenom * da / vh));
+
+		if (nh > 0.0)
+		{
+			float scol = fres*texture2D(lightFunc, vec2(nh, spec.a)).r*gt/(nh*da);
+			col += dlit*scol*spec.rgb;
+			//col += spec.rgb;
+		}
+	}	
+
+	if (envIntensity > 0.0)
 	{
 		vec3 ref = reflect(normalize(pos), norm);
 		
@@ -235,12 +311,10 @@ void main()
 			vec3 pfinal = pos + ref * dot(pdelta, proj_n)/ds;
 			
 			vec4 stc = (proj_mat * vec4(pfinal.xyz, 1.0));
-
+			stc /= stc.w;
 			if (stc.z > 0.0)
 			{
-				stc.xy /= stc.w;
-
-				float fatten = clamp(spec.a*spec.a+spec.a*0.5, 0.25, 1.0);
+				float fatten = clamp(envIntensity*envIntensity+envIntensity*0.25, 0.25, 1.0);
 				
 				stc.xy = (stc.xy - vec2(0.5)) * fatten + vec2(0.5);
 								
@@ -249,8 +323,7 @@ void main()
 					stc.x > 0.0 &&
 					stc.y > 0.0)
 				{
-					vec4 scol = texture2DLodSpecular(projectionMap, stc.xy, proj_lod-spec.a*proj_lod);
-					col += dist_atten*scol.rgb*color.rgb*scol.a*spec.rgb;
+					col += color.rgb*texture2DLodSpecular(projectionMap, stc.xy, proj_lod).rgb*spec.rgb;										
 				}
 			}
 		}