merge up to latest snowstorm integration branch

1 files changed, 100 insertions, 28 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
index cca63872de..1975b18652 100644..100755
--- a/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/spotLightF.glsl
@@ -22,18 +22,15 @@
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
-
  
+#extension GL_ARB_texture_rectangle : enable
+
 #ifdef DEFINE_GL_FRAGCOLOR
 out vec4 frag_color;
 #else
 #define frag_color gl_FragColor
 #endif
 
-//class 1 -- no shadows
-
-#extension GL_ARB_texture_rectangle : enable
-
 uniform sampler2DRect diffuseRect;
 uniform sampler2DRect specularRect;
 uniform sampler2DRect depthMap;
@@ -41,6 +38,7 @@ 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
@@ -57,20 +55,59 @@ uniform float far_clip;
 uniform vec3 proj_origin; //origin of projection to be used for angular attenuation
 uniform float sun_wash;
 
+uniform float size;
 uniform vec3 color;
 uniform float falloff;
-uniform float size;
 
-VARYING vec4 vary_fragcoord;
 VARYING vec3 trans_center;
-
+VARYING vec4 vary_fragcoord;
 uniform vec2 screen_res;
 
 uniform mat4 inv_proj;
 
+#ifdef SINGLE_FP_ONLY
+vec2 encode_normal(vec3 n)
+{
+	vec2 sn;
+	sn.xy = (n.xy * vec2(0.5f,0.5f)) + vec2(0.5f,0.5f);
+	return sn;
+}
+
+vec3 decode_normal (vec2 enc)
+{
+	vec3 n;
+	n.xy = (enc.xy * vec2(2.0f,2.0f)) - vec2(1.0f,1.0f);
+	n.z = sqrt(1.0f - dot(n.xy,n.xy));
+	return n;
+}
+#else
+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;
+}
+#endif
+
+vec4 correctWithGamma(vec4 col)
+{
+	return vec4(pow(col.rgb, vec3(2.2)), col.a);
+}
+
 vec4 texture2DLodSpecular(sampler2D projectionMap, vec2 tc, float lod)
 {
 	vec4 ret = texture2DLod(projectionMap, tc, lod);
+	ret = correctWithGamma(ret);
 	
 	vec2 dist = tc-vec2(0.5);
 	
@@ -86,6 +123,7 @@ 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);
 	
 	vec2 dist = vec2(0.5) - abs(tc-vec2(0.5));
 	
@@ -103,6 +141,7 @@ 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);
 	
 	vec2 dist = tc-vec2(0.5);
 	
@@ -136,15 +175,17 @@ void main()
 	
 	vec3 pos = getPosition(frag.xy).xyz;
 	vec3 lv = trans_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 = texture2DRect(normalMap, frag.xy).xyz;
-	norm = vec3((norm.xy-0.5)*2.0, norm.z);
+	float envIntensity = norm.z;
+	norm = decode_normal(norm.xy);
 	
 	norm = normalize(norm);
 	float l_dist = -dot(lv, proj_n);
@@ -158,7 +199,10 @@ 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;
@@ -172,31 +216,35 @@ void main()
 		
 	vec3 diff_tex = texture2DRect(diffuseRect, frag.xy).rgb;
 		
+	vec4 spec = texture2DRect(specularRect, frag.xy);
+
+	
+
 	float noise = texture2D(noiseMap, frag.xy/128.0).b;
+	vec3 dlit = vec3(0, 0, 0);
+	
 	if (proj_tc.z > 0.0 &&
 		proj_tc.x < 1.0 &&
 		proj_tc.y < 1.0 &&
 		proj_tc.x > 0.0 &&
 		proj_tc.y > 0.0)
 	{
-		float lit = 0.0;
 		float amb_da = proj_ambiance;
+		float lit = 0.0;
 		
 		if (da > 0.0)
 		{
+			lit = da * dist_atten * noise;
+
 			float diff = clamp((l_dist-proj_focus)/proj_range, 0.0, 1.0);
 			float lod = diff * proj_lod;
 			
 			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;
-			amb_da += (da*0.5)*proj_ambiance;
+			col = dlit*lit*diff_tex;
+			//amb_da += (da*0.5)*(1.0-shadow)*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);
 							
@@ -205,14 +253,38 @@ 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.rgb*amb_plcol.rgb*amb_plcol.a*diff_tex.rgb;
 	}
 	
-	
-	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);
 		
 		//project from point pos in direction ref to plane proj_p, proj_n
@@ -229,8 +301,9 @@ void main()
 			{
 				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*0.5, 0.25, 1.0);
 				
+				//stc.xy = (stc.xy - vec2(0.5)) * fatten + vec2(0.5);
 				stc.xy = (stc.xy - vec2(0.5)) * fatten + vec2(0.5);
 								
 				if (stc.x < 1.0 &&
@@ -238,8 +311,7 @@ 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-envIntensity*proj_lod).rgb*spec.rgb;										
 				}
 			}
 		}