More per-pixel lighting fanciness.

4 files changed, 156 insertions, 20 deletions

diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
index 12706f130b..6f10ff8451 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
@@ -53,11 +53,53 @@ VARYING vec3 vary_directional;
 VARYING vec3 vary_fragcoord;
 VARYING vec3 vary_position;
 VARYING vec3 vary_pointlight_col;
+VARYING vec3 vary_norm;
 
 uniform float shadow_bias;
 
 uniform mat4 inv_proj;
 
+uniform vec4 light_position[8];
+uniform vec3 light_direction[8];
+uniform vec3 light_attenuation[8]; 
+uniform vec3 light_diffuse[8];
+
+float calcDirectionalLight(vec3 n, vec3 l)
+{
+        float a = pow(max(dot(n,l),0.0), 0.7);
+        return a;
+}
+
+float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight)
+{
+	//get light vector
+	vec3 lv = lp.xyz-v;
+	
+	//get distance
+	float d = dot(lv,lv);
+	
+	float da = 0.0;
+
+	if (d > 0.0 && la > 0.0 && fa > 0.0)
+	{
+		//normalize light vector
+		lv = normalize(lv);
+	
+		//distance attenuation
+		float dist2 = d/la;
+		da = clamp(1.0-(dist2-1.0*(1.0-fa))/fa, 0.0, 1.0);
+
+		// spotlight coefficient.
+		float spot = max(dot(-ln, lv), is_pointlight);
+		da *= spot*spot; // GL_SPOT_EXPONENT=2
+
+		//angular attenuation
+		da *= max(pow(dot(n, lv), 0.7), 0.0);		
+	}
+
+	return da;	
+}
+
 float pcfShadow(sampler2DShadow shadowMap, vec4 stc)
 {
 	stc.xyz /= stc.w;
@@ -147,17 +189,23 @@ void main()
 	{
 		shadow = 1.0;
 	}
-	
+	vec3 dlight = calcDirectionalLight(vary_norm, light_position[0].xyz) * vary_directional.rgb * vary_pointlight_col;
 	vec4 diff = diffuseLookup(vary_texcoord0.xy);
 
-	vec4 col = vec4(vary_ambient + vary_directional.rgb*shadow, vertex_color.a);
+	vec4 col = vec4(vary_ambient + dlight *shadow, vertex_color.a);
 	vec4 color = diff * col;
 	
 	color.rgb = atmosLighting(color.rgb);
 
 	color.rgb = scaleSoftClip(color.rgb);
+	vec3 light_col = vec3(0,0,0);
 
-	color.rgb += diff.rgb * vary_pointlight_col.rgb;
+	for (int i = 2; i < 8; i++)
+	{
+		light_col += light_diffuse[i].rgb * calcPointLightOrSpotLight(pos.xyz, vary_norm, light_position[i], light_direction[i], light_attenuation[i].x, light_attenuation[i].y, light_attenuation[i].z);
+	}
+	
+	color.rgb += diff.rgb * vary_pointlight_col * light_col;
 
 	frag_color = color;
 }
diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedF.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedF.glsl
index 228dc104ac..8fd8bb8066 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedF.glsl
@@ -52,12 +52,54 @@ VARYING vec3 vary_position;
 VARYING vec3 vary_pointlight_col;
 VARYING vec2 vary_texcoord0;
 VARYING vec4 vertex_color;
+VARYING vec3 vary_norm;
 
 uniform vec2 shadow_res;
 uniform float shadow_bias;
 
 uniform mat4 inv_proj;
 
+uniform vec4 light_position[8];
+uniform vec3 light_direction[8];
+uniform vec3 light_attenuation[8]; 
+uniform vec3 light_diffuse[8];
+
+float calcDirectionalLight(vec3 n, vec3 l)
+{
+        float a = pow(max(dot(n,l),0.0), 0.7);
+        return a;
+}
+
+float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight)
+{
+	//get light vector
+	vec3 lv = lp.xyz-v;
+	
+	//get distance
+	float d = dot(lv,lv);
+	
+	float da = 0.0;
+
+	if (d > 0.0 && la > 0.0 && fa > 0.0)
+	{
+		//normalize light vector
+		lv = normalize(lv);
+	
+		//distance attenuation
+		float dist2 = d/la;
+		da = clamp(1.0-(dist2-1.0*(1.0-fa))/fa, 0.0, 1.0);
+
+		// spotlight coefficient.
+		float spot = max(dot(-ln, lv), is_pointlight);
+		da *= spot*spot; // GL_SPOT_EXPONENT=2
+
+		//angular attenuation
+		da *= max(pow(dot(n, lv), 0.7), 0.0);		
+	}
+
+	return da;	
+}
+
 vec4 getPosition(vec2 pos_screen)
 {
 	float depth = texture2DRect(depthMap, pos_screen.xy).a;
@@ -161,17 +203,23 @@ void main()
 	{
 		shadow = 1.0;
 	}
-
+	vec3 dlight = calcDirectionalLight(vary_norm, light_position[0].xyz) * vary_directional.rgb * vary_pointlight_col;
 	vec4 diff = texture2D(diffuseMap,vary_texcoord0.xy);
 
-	vec4 col = vec4(vary_ambient + vary_directional.rgb*shadow, vertex_color.a);
+	vec4 col = vec4(vary_ambient + dlight*shadow, vertex_color.a);
 	vec4 color = diff * col;
 	
 	color.rgb = atmosLighting(color.rgb);
 
 	color.rgb = scaleSoftClip(color.rgb);
+	vec3 light_col = vec3(0,0,0);
 
-	color.rgb += diff.rgb * vary_pointlight_col.rgb;
+	for (int i = 2; i < 8; i++)
+	{
+		light_col += light_diffuse[i].rgb * calcPointLightOrSpotLight(pos.xyz, vary_norm, light_position[i], light_direction[i], light_attenuation[i].x, light_attenuation[i].y, light_attenuation[i].z);
+	}
+	
+	color.rgb += diff.rgb * vary_pointlight_col * light_col;
 
 	frag_color = color;	
 }
diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedNoColorF.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedNoColorF.glsl
index c3950a10e1..ff75b039b2 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedNoColorF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedNoColorF.glsl
@@ -60,6 +60,47 @@ uniform float shadow_bias;
 
 uniform mat4 inv_proj;
 
+uniform vec4 light_position[8];
+uniform vec3 light_direction[8];
+uniform vec3 light_attenuation[8]; 
+uniform vec3 light_diffuse[8];
+
+float calcDirectionalLight(vec3 n, vec3 l)
+{
+        float a = pow(max(dot(n,l),0.0), 0.7);
+        return a;
+}
+
+float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight)
+{
+	//get light vector
+	vec3 lv = lp.xyz-v;
+	
+	//get distance
+	float d = dot(lv,lv);
+	
+	float da = 0.0;
+
+	if (d > 0.0 && la > 0.0 && fa > 0.0)
+	{
+		//normalize light vector
+		lv = normalize(lv);
+	
+		//distance attenuation
+		float dist2 = d/la;
+		da = clamp(1.0-(dist2-1.0*(1.0-fa))/fa, 0.0, 1.0);
+
+		// spotlight coefficient.
+		float spot = max(dot(-ln, lv), is_pointlight);
+		da *= spot*spot; // GL_SPOT_EXPONENT=2
+
+		//angular attenuation
+		da *= max(pow(dot(n, lv), 0.7), 0.0);		
+	}
+
+	return da;	
+}
+
 vec4 getPosition(vec2 pos_screen)
 {
 	float depth = texture2DRect(depthMap, pos_screen.xy).a;
@@ -169,15 +210,22 @@ void main()
 	{
 		shadow = 1.0;
 	}
+	vec3 dlight = calcDirectionalLight(vary_norm, light_position[0].xyz) * vary_directional.rgb * vary_pointlight_col;
 	
-	vec4 col = vec4(vary_ambient + vary_directional.rgb*shadow, 1.0);
+	vec4 col = vec4(vary_ambient + dlight*shadow, 1.0);
 	vec4 color = diff * col;
 	
 	color.rgb = atmosLighting(color.rgb);
 
 	color.rgb = scaleSoftClip(color.rgb);
+	vec3 light_col = vec3(0,0,0);
 
-	color.rgb += diff.rgb * vary_pointlight_col.rgb;
+	for (int i = 2; i < 8; i++)
+	{
+		light_col += light_diffuse[i].rgb * calcPointLightOrSpotLight(pos.xyz, vary_norm, light_position[i], light_direction[i], light_attenuation[i].x, light_attenuation[i].y, light_attenuation[i].z);
+	}
+	
+	color.rgb += diff.rgb * vary_pointlight_col * light_col;
 
 	frag_color = color;
 }
diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl
index 1586aab0f2..79e5d7e572 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl
@@ -53,6 +53,7 @@ VARYING vec3 vary_pointlight_col;
 VARYING vec4 vertex_color;
 VARYING vec2 vary_texcoord0;
 
+VARYING vec3 vary_norm;
 
 uniform float near_clip;
 uniform float shadow_offset;
@@ -110,7 +111,7 @@ void main()
 	vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
 		
 	vec3 norm = normalize(normal_matrix * normal);
-	
+	vary_norm = norm;
 	float dp_directional_light = max(0.0, dot(norm, light_position[0].xyz));
 	vary_position = pos.xyz + light_position[0].xyz * (1.0-dp_directional_light)*shadow_offset;
 		
@@ -119,16 +120,7 @@ void main()
 	//vec4 color = calcLighting(pos.xyz, norm, diffuse_color, vec4(0.));
 	vec4 col = vec4(0.0, 0.0, 0.0, diffuse_color.a);
 
-	
-	// Collect normal lights
-	col.rgb += light_diffuse[2].rgb*calcPointLightOrSpotLight(pos.xyz, norm, light_position[2], light_direction[2], light_attenuation[2].x, light_attenuation[2].y, light_attenuation[2].z);
-	col.rgb += light_diffuse[3].rgb*calcPointLightOrSpotLight(pos.xyz, norm, light_position[3], light_direction[3], light_attenuation[3].x, light_attenuation[3].y, light_attenuation[3].z);
-	col.rgb += light_diffuse[4].rgb*calcPointLightOrSpotLight(pos.xyz, norm, light_position[4], light_direction[4], light_attenuation[4].x, light_attenuation[4].y, light_attenuation[4].z);
-	col.rgb += light_diffuse[5].rgb*calcPointLightOrSpotLight(pos.xyz, norm, light_position[5], light_direction[5], light_attenuation[5].x, light_attenuation[5].y, light_attenuation[5].z);
-	col.rgb += light_diffuse[6].rgb*calcPointLightOrSpotLight(pos.xyz, norm, light_position[6], light_direction[6], light_attenuation[6].x, light_attenuation[6].y, light_attenuation[6].z);
-	col.rgb += light_diffuse[7].rgb*calcPointLightOrSpotLight(pos.xyz, norm, light_position[7], light_direction[7], light_attenuation[7].x, light_attenuation[7].y, light_attenuation[7].z);
-
-	vary_pointlight_col = col.rgb*diffuse_color.rgb;
+	vary_pointlight_col = diffuse_color.rgb;
 
 	col.rgb = vec3(0,0,0);
 
@@ -136,7 +128,7 @@ void main()
 	col.rgb = atmosAmbient(vec3(0.));
 	
 	vary_ambient = col.rgb*diffuse_color.rgb;
-	vary_directional.rgb = diffuse_color.rgb*atmosAffectDirectionalLight(max(calcDirectionalLight(norm, light_position[0].xyz), (1.0-diffuse_color.a)*(1.0-diffuse_color.a)));
+	vary_directional.rgb = atmosAffectDirectionalLight(1);
 	
 	col.rgb = col.rgb*diffuse_color.rgb;