Merge of windlight into release (QAR-286). This includes all changes in

windlight14 which have passed QA (up through r79932).

svn merge -r 80831:80833 svn+ssh://svn.lindenlab.com/svn/linden/branches/merge_windlight14_r80620

11 files changed, 265 insertions, 146 deletions

diff --git a/indra/newview/app_settings/shaders/class2/lighting/lightF.glsl b/indra/newview/app_settings/shaders/class2/lighting/lightF.glsl
index 6f732ed731..b372d66298 100644
--- a/indra/newview/app_settings/shaders/class2/lighting/lightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/lighting/lightF.glsl
@@ -1,36 +1,23 @@
-void applyScatter(inout vec3 color);
+/** 
+ * @file lightF.glsl
+ *
+ * Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
 
 uniform sampler2D diffuseMap;
 
+vec3 atmosLighting(vec3 light);
+vec3 scaleSoftClip(vec3 light);
+
 void default_lighting() 
 {
-	vec4 color = gl_Color * texture2D(diffuseMap, gl_TexCoord[0].xy);
-	//applyScatter(color.rgb);
-	gl_FragColor = color;
-}
+	vec4 color = texture2D(diffuseMap, gl_TexCoord[0].xy) * gl_Color;
+	
+	color.rgb = atmosLighting(color.rgb);
 
-void alpha_lighting() 
-{
-	vec4 diff = texture2D(diffuseMap, gl_TexCoord[0].xy);
-	vec3 color = gl_Color.rgb * diff.rgb;
-	applyScatter(color);
-	gl_FragColor.rgb = color;
-	gl_FragColor.a = diff.a * gl_Color.a;	
-}
+	color.rgb = scaleSoftClip(color.rgb);
 
-void water_lighting(inout vec3 diff)
-{
-	diff = (diff*0.9 + gl_Color.rgb*0.1);
-	applyScatter(diff);
-}
-
-void terrain_lighting(inout vec3 color)
-{
-	color.rgb *= gl_Color.rgb;
-	applyScatter(color);
+	gl_FragColor = color;
 }
 
-vec4 getLightColor()
-{
-	return gl_Color;
-}
\ No newline at end of file
diff --git a/indra/newview/app_settings/shaders/class2/lighting/lightFullbrightF.glsl b/indra/newview/app_settings/shaders/class2/lighting/lightFullbrightF.glsl
new file mode 100644
index 0000000000..e6b6d85808
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/lighting/lightFullbrightF.glsl
@@ -0,0 +1,23 @@
+/** 
+ * @file lightFullbrightF.glsl
+ *
+ * Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+uniform sampler2D diffuseMap;
+
+vec3 fullbrightAtmosTransport(vec3 light);
+vec3 fullbrightScaleSoftClip(vec3 light);
+
+void fullbright_lighting()
+{
+	vec4 color = texture2D(diffuseMap, gl_TexCoord[0].xy) * gl_Color;
+	
+	color.rgb = fullbrightAtmosTransport(color.rgb);
+	
+	color.rgb = fullbrightScaleSoftClip(color.rgb);
+
+	gl_FragColor = color;
+}
+
diff --git a/indra/newview/app_settings/shaders/class2/lighting/lightFullbrightShinyF.glsl b/indra/newview/app_settings/shaders/class2/lighting/lightFullbrightShinyF.glsl
new file mode 100644
index 0000000000..8f408c0436
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/lighting/lightFullbrightShinyF.glsl
@@ -0,0 +1,30 @@
+/** 
+ * @file lightFullbrightShinyF.glsl
+ *
+ * Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+uniform sampler2D diffuseMap;
+uniform samplerCube environmentMap;
+
+vec3 fullbrightShinyAtmosTransport(vec3 light);
+vec3 fullbrightScaleSoftClip(vec3 light);
+
+void fullbright_shiny_lighting()
+{
+	vec4 color = texture2D(diffuseMap, gl_TexCoord[0].xy);
+	color.rgb *= gl_Color.rgb;
+	
+	vec3 envColor = textureCube(environmentMap, gl_TexCoord[1].xyz).rgb;	
+	color.rgb = mix(color.rgb, envColor.rgb, gl_Color.a);
+
+	color.rgb = fullbrightShinyAtmosTransport(color.rgb);
+
+	color.rgb = fullbrightScaleSoftClip(color.rgb);
+
+	color.a = max(color.a, gl_Color.a);
+
+	gl_FragColor = color;
+}
+
diff --git a/indra/newview/app_settings/shaders/class2/lighting/lightFullbrightWaterF.glsl b/indra/newview/app_settings/shaders/class2/lighting/lightFullbrightWaterF.glsl
new file mode 100644
index 0000000000..060ad9cb67
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/lighting/lightFullbrightWaterF.glsl
@@ -0,0 +1,21 @@
+/** 
+ * @file lightFullbrightWaterF.glsl
+ *
+ * Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+uniform sampler2D diffuseMap;
+
+vec3 fullbrightAtmosTransport(vec3 light);
+vec4 applyWaterFog(vec4 color);
+
+void fullbright_lighting_water()
+{
+	vec4 color = texture2D(diffuseMap, gl_TexCoord[0].xy) * gl_Color;
+
+	color.rgb = fullbrightAtmosTransport(color.rgb);
+	
+	gl_FragColor = applyWaterFog(color);
+}
+
diff --git a/indra/newview/app_settings/shaders/class2/lighting/lightShinyF.glsl b/indra/newview/app_settings/shaders/class2/lighting/lightShinyF.glsl
new file mode 100644
index 0000000000..b3927c77a6
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/lighting/lightShinyF.glsl
@@ -0,0 +1,29 @@
+/** 
+ * @file lightShinyF.glsl
+ *
+ * Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+uniform sampler2D diffuseMap;
+uniform samplerCube environmentMap;
+
+vec3 scaleSoftClip(vec3 light);
+vec3 atmosLighting(vec3 light);
+vec4 applyWaterFog(vec4 color);
+
+void shiny_lighting()
+{
+	vec4 color = texture2D(diffuseMap, gl_TexCoord[0].xy);
+	color.rgb *= gl_Color.rgb;
+	
+	vec3 envColor = textureCube(environmentMap, gl_TexCoord[1].xyz).rgb;	
+	color.rgb = mix(color.rgb, envColor.rgb, gl_Color.a);
+
+	color.rgb = atmosLighting(color.rgb);
+
+	color.rgb = scaleSoftClip(color.rgb);
+	color.a = max(color.a, gl_Color.a);
+	gl_FragColor = color;
+}
+
diff --git a/indra/newview/app_settings/shaders/class2/lighting/lightShinyWaterF.glsl b/indra/newview/app_settings/shaders/class2/lighting/lightShinyWaterF.glsl
new file mode 100644
index 0000000000..f090306be6
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/lighting/lightShinyWaterF.glsl
@@ -0,0 +1,27 @@
+/** 
+ * @file lightShinyWaterF.glsl
+ *
+ * Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+
+uniform sampler2D diffuseMap;
+uniform samplerCube environmentMap;
+
+vec3 atmosLighting(vec3 light);
+vec4 applyWaterFog(vec4 color);
+
+void shiny_lighting_water()
+{
+	vec4 color = texture2D(diffuseMap, gl_TexCoord[0].xy);
+	color.rgb *= gl_Color.rgb;
+	
+	vec3 envColor = textureCube(environmentMap, gl_TexCoord[1].xyz).rgb;	
+	color.rgb = mix(color.rgb, envColor.rgb, gl_Color.a);
+
+	color.rgb = atmosLighting(color.rgb);
+	color.a = max(color.a, gl_Color.a);
+	gl_FragColor = applyWaterFog(color);
+}
+
diff --git a/indra/newview/app_settings/shaders/class2/lighting/lightSpecularV.glsl b/indra/newview/app_settings/shaders/class2/lighting/lightSpecularV.glsl
new file mode 100644
index 0000000000..c3384ffc5d
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/lighting/lightSpecularV.glsl
@@ -0,0 +1,16 @@
+/** 
+ * @file lightSpecularV.glsl
+ *
+ * Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+// All lights, no specular highlights
+
+vec4 sumLightsSpecular(vec3 pos, vec3 norm, vec4 color, inout vec4 specularColor, vec4 baseCol);
+
+vec4 calcLightingSpecular(vec3 pos, vec3 norm, vec4 color, inout vec4 specularColor, vec4 baseCol)
+{
+	return sumLightsSpecular(pos, norm, color, specularColor, baseCol);
+}
+
diff --git a/indra/newview/app_settings/shaders/class2/lighting/lightV.glsl b/indra/newview/app_settings/shaders/class2/lighting/lightV.glsl
index b15960dea2..ff3bcb5cd2 100644
--- a/indra/newview/app_settings/shaders/class2/lighting/lightV.glsl
+++ b/indra/newview/app_settings/shaders/class2/lighting/lightV.glsl
@@ -1,126 +1,16 @@
-// All lights, no specular highlights
-
-float calcDirectionalLight(vec3 n, vec3 l)
-{
-	float a = max(dot(n,l),0.0);
-	return a;
-}
-
-float calcPointLight(vec3 v, vec3 n, vec4 lp, float la)
-{
-	//get light vector
-	vec3 lv = lp.xyz-v;
-	
-	//get distance
-	float d = length(lv);
-	
-	//normalize light vector
-	lv *= 1.0/d;
-	
-	//distance attenuation
-	float da = clamp(1.0/(la * d), 0.0, 1.0);
-	
-	//angular attenuation
-	da *= calcDirectionalLight(n, lv);
-	
-	return da;	
-}
+/** 
+ * @file lightV.glsl
+ *
+ * Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
 
-float calcDirectionalSpecular(vec3 view, vec3 n, vec3 l)
-{
-	return pow(max(dot(reflect(view, n),l), 0.0),8.0);
-}
+// All lights, no specular highlights
 
-float calcDirectionalLightSpecular(inout vec4 specular, vec3 view, vec3 n, vec3 l, vec3 lightCol, float da)
-{
-	
-	specular.rgb += calcDirectionalSpecular(view,n,l)*lightCol*da;
-	return calcDirectionalLight(n,l);
-}
-
-vec3 calcPointLightSpecular(inout vec4 specular, vec3 view, vec3 v, vec3 n, vec3 l, float r, float pw, vec3 lightCol)
-{
-	//get light vector
-	vec3 lv = l-v;
-	
-	//get distance
-	float d = length(lv);
-	
-	//normalize light vector
-	lv *= 1.0/d;
-	
-	//distance attenuation
-	float da = clamp(1.0/(r * d), 0.0, 1.0);
-	
-	//angular attenuation
-	
-	da *= calcDirectionalLightSpecular(specular, view, n, lv, lightCol, da);
-	
-	return da*lightCol;	
-}
+vec4 sumLights(vec3 pos, vec3 norm, vec4 color, vec4 baseLight);
 
 vec4 calcLighting(vec3 pos, vec3 norm, vec4 color, vec4 baseLight)
 {
-	vec4 col;
-	col.a = color.a;
-	
-	col.rgb = gl_LightModel.ambient.rgb + baseLight.rgb;
-	
-	col.rgb += gl_LightSource[0].diffuse.rgb*calcDirectionalLight(norm, gl_LightSource[0].position.xyz);
-	col.rgb += gl_LightSource[1].diffuse.rgb*calcDirectionalLight(norm, gl_LightSource[1].position.xyz);
-	col.rgb += gl_LightSource[2].diffuse.rgb*calcPointLight(pos, norm, gl_LightSource[2].position, gl_LightSource[2].linearAttenuation);
-	col.rgb += gl_LightSource[3].diffuse.rgb*calcPointLight(pos, norm, gl_LightSource[3].position, gl_LightSource[3].linearAttenuation);
-	col.rgb += gl_LightSource[4].diffuse.rgb*calcPointLight(pos, norm, gl_LightSource[4].position, gl_LightSource[4].linearAttenuation);
-	col.rgb += gl_LightSource[5].diffuse.rgb*calcPointLight(pos, norm, gl_LightSource[5].position, gl_LightSource[5].linearAttenuation);
-	col.rgb += gl_LightSource[6].diffuse.rgb*calcPointLight(pos, norm, gl_LightSource[6].position, gl_LightSource[6].linearAttenuation);
-	col.rgb += gl_LightSource[7].diffuse.rgb*calcPointLight(pos, norm, gl_LightSource[7].position, gl_LightSource[7].linearAttenuation);
-				
-	col.rgb = min(col.rgb*color.rgb, 1.0);
-	
-	gl_FrontColor = vec4(col.rgb, col.a);
-	return col;	
-}
-
-vec4 calcLighting(vec3 pos, vec3 norm, vec4 color, vec3 baseLight)
-{
-	return calcLighting(pos, norm, color, vec4(baseLight, 1.0));
-}
-
-vec4 calcLighting(vec3 pos, vec3 norm, vec4 color)
-{
-	return calcLighting(pos, norm, color, vec3(0.0,0.0,0.0));
+	return sumLights(pos, norm, color, baseLight);
 }
 
-vec4 calcLightingSpecular(vec3 pos, vec3 norm, vec4 color, inout vec4 specularColor, vec4 baseCol)
-{
-	vec4 col;
-	col.a = color.a;
-	
-	col.rgb = gl_LightModel.ambient.rgb;
-	
-	vec3 view = normalize(pos);
-	
-	vec4 specular = specularColor;
-	specularColor.rgb = vec3(0.0, 0.0, 0.0);
-	
-	col.rgb += baseCol.a*gl_LightSource[0].diffuse.rgb*calcDirectionalLightSpecular(specularColor, view, norm, gl_LightSource[0].position.xyz,gl_LightSource[0].diffuse.rgb*baseCol.a, 1.0);
-	col.rgb += gl_LightSource[1].diffuse.rgb*calcDirectionalLightSpecular(specularColor, view, norm, gl_LightSource[1].position.xyz,gl_LightSource[1].diffuse.rgb, 1.0);
-	col.rgb += calcPointLightSpecular(specularColor, view, pos, norm, gl_LightSource[2].position.xyz, gl_LightSource[2].linearAttenuation, gl_LightSource[2].quadraticAttenuation,gl_LightSource[2].diffuse.rgb);
-	col.rgb += calcPointLightSpecular(specularColor, view, pos, norm, gl_LightSource[3].position.xyz, gl_LightSource[3].linearAttenuation, gl_LightSource[3].quadraticAttenuation,gl_LightSource[3].diffuse.rgb);
-	col.rgb += calcPointLightSpecular(specularColor, view, pos, norm, gl_LightSource[4].position.xyz, gl_LightSource[4].linearAttenuation, gl_LightSource[4].quadraticAttenuation,gl_LightSource[4].diffuse.rgb);
-	col.rgb += calcPointLightSpecular(specularColor, view, pos, norm, gl_LightSource[5].position.xyz, gl_LightSource[5].linearAttenuation, gl_LightSource[5].quadraticAttenuation,gl_LightSource[5].diffuse.rgb);
-	//col.rgb += calcPointLightSpecular(specularColor, view, pos, norm, gl_LightSource[6].position.xyz, gl_LightSource[6].linearAttenuation, gl_LightSource[6].quadraticAttenuation,gl_LightSource[6].diffuse.rgb);
-	//col.rgb += calcPointLightSpecular(specularColor, view, pos, norm, gl_LightSource[7].position.xyz, gl_LightSource[7].linearAttenuation, gl_LightSource[7].quadraticAttenuation,gl_LightSource[7].diffuse.rgb);
-	col.rgb += baseCol.rgb;
-						
-	col.rgb = min(col.rgb*color.rgb, 1.0);
-	specularColor.rgb = min(specularColor.rgb*specular.rgb, 1.0);
-
-	gl_FrontColor = vec4(col.rgb+specularColor.rgb,col.a);	
-	return col;	
-}
-
-vec4 calcLightingSpecular(vec3 pos, vec3 norm, vec4 color, inout vec4 specularColor, vec3 baseCol)
-{
-	return calcLightingSpecular(pos, norm, color, specularColor, vec4(baseCol, 1.0));
-}
diff --git a/indra/newview/app_settings/shaders/class2/lighting/lightWaterF.glsl b/indra/newview/app_settings/shaders/class2/lighting/lightWaterF.glsl
new file mode 100644
index 0000000000..086954cd47
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/lighting/lightWaterF.glsl
@@ -0,0 +1,21 @@
+/** 
+ * @file lightWaterF.glsl
+ *
+ * Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+uniform sampler2D diffuseMap;
+
+vec3 atmosLighting(vec3 light);
+vec4 applyWaterFog(vec4 color);
+
+void default_lighting_water()
+{
+	vec4 color = texture2D(diffuseMap, gl_TexCoord[0].xy) * gl_Color;
+
+	color.rgb = atmosLighting(color.rgb);
+
+	gl_FragColor = applyWaterFog(color);
+}
+
diff --git a/indra/newview/app_settings/shaders/class2/lighting/sumLightsSpecularV.glsl b/indra/newview/app_settings/shaders/class2/lighting/sumLightsSpecularV.glsl
new file mode 100644
index 0000000000..edd1a8a946
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/lighting/sumLightsSpecularV.glsl
@@ -0,0 +1,41 @@
+/**
+ * @file sumLightsV.glsl
+ *
+ * Copyright (c) 2005-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+float calcDirectionalLightSpecular(inout vec4 specular, vec3 view, vec3 n, vec3 l, vec3 lightCol, float da);
+vec3 calcPointLightSpecular(inout vec4 specular, vec3 view, vec3 v, vec3 n, vec3 l, float r, float pw, vec3 lightCol);
+
+vec3 atmosAmbient(vec3 light);
+vec3 atmosAffectDirectionalLight(float lightIntensity);
+vec3 atmosGetDiffuseSunlightColor();
+vec3 scaleDownLight(vec3 light);
+
+vec4 sumLightsSpecular(vec3 pos, vec3 norm, vec4 color, inout vec4 specularColor, vec4 baseCol)
+{
+	vec4 col = vec4(0.0, 0.0, 0.0, color.a);
+	
+	vec3 view = normalize(pos);
+	
+	/// collect all the specular values from each calcXXXLightSpecular() function
+	vec4 specularSum = vec4(0.0);
+	
+	// Collect normal lights (need to be divided by two, as we later multiply by 2)
+	col.rgb += gl_LightSource[1].diffuse.rgb * calcDirectionalLightSpecular(specularColor, view, norm, gl_LightSource[1].position.xyz, gl_LightSource[1].diffuse.rgb, 1.0);
+	col.rgb += calcPointLightSpecular(specularSum, view, pos, norm, gl_LightSource[2].position.xyz, gl_LightSource[2].linearAttenuation, gl_LightSource[2].quadraticAttenuation, gl_LightSource[2].diffuse.rgb);
+	col.rgb += calcPointLightSpecular(specularSum, view, pos, norm, gl_LightSource[3].position.xyz, gl_LightSource[3].linearAttenuation, gl_LightSource[3].quadraticAttenuation, gl_LightSource[3].diffuse.rgb);
+	//col.rgb += calcPointLightSpecular(specularSum, view, pos, norm, gl_LightSource[4].position.xyz, gl_LightSource[4].linearAttenuation, gl_LightSource[4].quadraticAttenuation, gl_LightSource[4].diffuse.rgb);
+	col.rgb = scaleDownLight(col.rgb);
+						
+	// Add windlight lights
+	col.rgb += atmosAmbient(baseCol.rgb);
+	col.rgb += atmosAffectDirectionalLight(calcDirectionalLightSpecular(specularSum, view, norm, gl_LightSource[0].position.xyz, atmosGetDiffuseSunlightColor()*baseCol.a, 1.0));
+
+	col.rgb = min(col.rgb*color.rgb, 1.0);
+	specularColor.rgb = min(specularColor.rgb*specularSum.rgb, 1.0);
+	col.rgb += specularColor.rgb;
+
+	return col;	
+}
diff --git a/indra/newview/app_settings/shaders/class2/lighting/sumLightsV.glsl b/indra/newview/app_settings/shaders/class2/lighting/sumLightsV.glsl
new file mode 100644
index 0000000000..f4c59734a4
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/lighting/sumLightsV.glsl
@@ -0,0 +1,34 @@
+/**
+ * @file sumLightsV.glsl
+ *
+ * Copyright (c) 2005-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+float calcDirectionalLight(vec3 n, vec3 l);
+float calcPointLight(vec3 v, vec3 n, vec4 lp, float la);
+
+vec3 atmosAmbient(vec3 light);
+vec3 atmosAffectDirectionalLight(float lightIntensity);
+vec3 scaleDownLight(vec3 light);
+
+vec4 sumLights(vec3 pos, vec3 norm, vec4 color, vec4 baseLight)
+{
+	vec4 col = vec4(0.0, 0.0, 0.0, color.a);
+	
+	// Collect normal lights (need to be divided by two, as we later multiply by 2)
+	col.rgb += gl_LightSource[1].diffuse.rgb * calcDirectionalLight(norm, gl_LightSource[1].position.xyz);
+	col.rgb += gl_LightSource[2].diffuse.rgb * calcPointLight(pos, norm, gl_LightSource[2].position, gl_LightSource[2].linearAttenuation);
+	col.rgb += gl_LightSource[3].diffuse.rgb * calcPointLight(pos, norm, gl_LightSource[3].position, gl_LightSource[3].linearAttenuation);
+	//col.rgb += gl_LightSource[4].diffuse.rgb * calcPointLight(pos, norm, gl_LightSource[4].position, gl_LightSource[4].linearAttenuation);
+	col.rgb = scaleDownLight(col.rgb);
+
+	// Add windlight lights
+	col.rgb += atmosAmbient(baseLight.rgb);
+	col.rgb += atmosAffectDirectionalLight(calcDirectionalLight(norm, gl_LightSource[0].position.xyz));
+				
+	col.rgb = min(col.rgb*color.rgb, 1.0);
+	
+	return col;	
+}
+