NORSPEC-58 Followup -- put back blinn phong, and do gamma correction approximation in light curves. Fix fresnel math.

5 files changed, 71 insertions, 18 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl
index ad50690c02..c11298aadd 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/multiPointLightF.glsl
@@ -110,14 +110,18 @@ void main()
 		{
 			lv = normalize(lv);
 			da = dot(norm, lv);
-					
+			
 			float fa = light_col[i].a+1.0;
 			float dist_atten = clamp(1.0-(dist2-1.0*(1.0-fa))/fa, 0.0, 1.0);
+			
 			dist_atten *= noise;
 
 			float lit = da * dist_atten;
-			
+
+			lit = pow(lit,0.7);
+						
 			vec3 col = light_col[i].rgb*lit*diff;
+			
 			//vec3 col = vec3(dist2, light_col[i].a, lit);
 			
 			if (spec.a > 0.0)
@@ -128,15 +132,16 @@ void main()
 				float nv = dot(norm, npos);
 				float vh = dot(npos, h);
 				float sa = nh;
-				vec3 fres = spec.rgb + pow(1 - dot(h, npos), 5) * (1 - spec.rgb);
+				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 (sa > 0.0)
+								
+				if (nh > 0.0)
 				{
-					vec3 scol = (fres * texture2D(lightFunc, vec2(nh, spec.a)).r * gt) / (nh * da);
-					col += lit*scol*light_col[i].rgb;
+					float scol = fres*texture2D(lightFunc, vec2(nh, spec.a)).r*gt/(nh*da);
+					col += lit*scol*light_col[i].rgb*spec.rgb;
+					//col += spec.rgb;
 				}
 			}
 			
diff --git a/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
index bff87cb6aa..09d23db096 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/multiSpotLightF.glsl
@@ -40,6 +40,7 @@ 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
@@ -142,7 +143,7 @@ void main()
 	}
 		
 	vec3 norm = texture2DRect(normalMap, frag.xy).xyz;
-	norm = vec3((norm.xy-0.5)*2.0, norm.z);
+	norm = norm = (norm.xyz-0.5)*2.0;
 	
 	norm = normalize(norm);
 	float l_dist = -dot(lv, proj_n);
@@ -190,6 +191,8 @@ void main()
 			vec3 lcol = color.rgb * plcol.rgb * plcol.a;
 			
 			lit = da * dist_atten * noise;
+
+			lit = pow(lit, 0.7);
 			
 			col = lcol*lit*diff_tex;
 			amb_da += (da*0.5)*proj_ambiance;
@@ -236,8 +239,28 @@ 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;
+
+					vec3 npos = -normalize(pos);
+					lv = pfinal-pos.xyz;
+					lv = normalize(lv);
+
+					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 (sa > 0.0)
+					{
+						float scol = fres * texture2D(lightFunc, vec2(nh, spec.a)).r * gt / (nh * da);
+						col += scol*color.rgb*texture2DLodSpecular(projectionMap, stc.xy, proj_lod-spec.a*proj_lod).rgb*spec.rgb;
+					}
+					
+					//vec4 scol = texture2DLodSpecular(projectionMap, stc.xy, proj_lod-spec.a*proj_lod);
+					//col += dist_atten*scol.rgb*color.rgb*scol.a*spec.rgb;
 				}
 			}
 		}
diff --git a/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl
index 03b036375b..e99329bbf2 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/pointLightF.glsl
@@ -102,6 +102,8 @@ void main()
 	float dist_atten = clamp(1.0-(dist2-1.0*(1.0-fa))/fa, 0.0, 1.0);
 	float lit = da * dist_atten * noise;
 	
+	lit = pow(lit, 0.7);
+
 	col = color.rgb*lit*col;
 
 	vec4 spec = texture2DRect(specularRect, frag.xy);
@@ -113,14 +115,14 @@ void main()
 		float nv = dot(norm, npos);
 		float vh = dot(npos, h);
 		float sa = nh;
-		vec3 fres = spec.rgb + pow(1 - dot(h, npos), 5) * (1 - spec.rgb);
+		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 (sa > 0.0)
+		if (nh > 0.0)
 		{
-			vec3 scol = (fres * texture2D(lightFunc, vec2(nh, spec.a)).r * gt) / (nh * da);
-			col += lit*scol*color.rgb;
+			float scol = fres*texture2D(lightFunc, vec2(nh, spec.a)).r*gt/(nh*da);
+			col += lit*scol*color.rgb*spec.rgb;
 		}
 	}
 	
diff --git a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
index f50935c1a8..437a06320e 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/softenLightF.glsl
@@ -280,6 +280,8 @@ void main()
 		
 	float da = max(dot(norm.xyz, sun_dir.xyz), 0.0);
 	
+	da = pow(da, 0.7);
+
 	vec4 diffuse = texture2DRect(diffuseRect, tc);
 	vec4 spec = texture2DRect(specularRect, vary_fragcoord.xy);
 	
@@ -300,7 +302,7 @@ void main()
 			//
 			vec3 refnormpersp = normalize(reflect(pos.xyz, norm.xyz));
 			float sa = dot(refnormpersp, sun_dir.xyz);
-			vec3 dumbshiny = vary_SunlitColor*(6 * texture2D(lightFunc, vec2(sa, spec.a)).r);
+			vec3 dumbshiny = vary_SunlitColor*(texture2D(lightFunc, vec2(sa, spec.a)).r);
 			
 			// add the two types of shiny together
 			vec3 spec_contrib = dumbshiny * spec.rgb;
diff --git a/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
index cca63872de..2f18e1a13d 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
@@ -41,6 +41,8 @@ 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
@@ -193,6 +195,8 @@ void main()
 			
 			lit = da * dist_atten * noise;
 			
+			lit = pow(lit, 0.7);
+
 			col = lcol*lit*diff_tex;
 			amb_da += (da*0.5)*proj_ambiance;
 		}
@@ -238,8 +242,25 @@ 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;
+					vec3 npos = -normalize(pos);
+					lv = pfinal-pos.xyz;
+					lv = normalize(lv);
+
+					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 += scol*color.rgb*texture2DLodSpecular(projectionMap, stc.xy, proj_lod-spec.a*proj_lod).rgb*spec.rgb;
+					}
 				}
 			}
 		}