X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=shaderlib%2Fcooktorrance.glsl;h=79f88f6475db747479996e81c73079de8d1106bd;hb=4d276c9b986b111611b8396f94dae56dbe736387;hp=71f8ec76c8df64046cd3a2a70e46742b5f23aa87;hpb=6b9338845dfee441cd18ad6c633e4feef8ad14e1;p=libs%2Fgl.git

diff --git a/shaderlib/cooktorrance.glsl b/shaderlib/cooktorrance.glsl
index 71f8ec76..79f88f64 100644
--- a/shaderlib/cooktorrance.glsl
+++ b/shaderlib/cooktorrance.glsl
@@ -30,8 +30,6 @@ layout(constant_id=auto) const bool use_emission = false;
 layout(constant_id=auto) const bool use_emission_map = false;
 layout(constant_id=auto) const bool use_image_based_lighting = false;
 
-const float PI = 3.1415926535;
-
 #pragma MSP stage(fragment)
 virtual vec4 get_base_color()
 {
@@ -120,7 +118,7 @@ vec3 fresnel_schlick(vec3 halfway, vec3 look, vec3 base_color, float metalness)
 }
 
 /* Computes the full contribution of a single light */
-vec3 cooktorrance_one_light_direct(vec3 normal, vec3 look, vec3 light, vec3 light_color, vec3 base_color, float metalness, float roughness)
+vec3 cooktorrance_one_light_direct(vec3 normal, vec3 look, vec3 light, vec3 base_color, float metalness, float roughness)
 {
 	vec3 halfway = normalize(light-look);
 	float ndist = normal_distribution_ggxtr(normal, halfway, roughness);
@@ -130,7 +128,7 @@ vec3 cooktorrance_one_light_direct(vec3 normal, vec3 look, vec3 light, vec3 ligh
 	vec3 k_diff = (1.0-k_spec)*(1.0-metalness);
 
 	float spec_denom = max(4.0*max(dot(normal, -look), 0.0)*max(dot(normal, light), 0.0), 0.001);
-	return max(dot(normal, light), 0.0)*light_color*(k_diff*lambert_diffuse(base_color)+k_spec*ndist*geom/spec_denom);
+	return max(dot(normal, light), 0.0)*(k_diff*lambert_diffuse(base_color)+k_spec*ndist*geom/spec_denom);
 }
 
 vec3 cooktorrance_environment(vec3 normal, vec3 look, vec3 base_color, float metalness, float roughness)
@@ -153,10 +151,14 @@ vec3 cooktorrance_environment(vec3 normal, vec3 look, vec3 base_color, float met
 
 vec3 cooktorrance_lighting(vec3 normal, vec3 look, vec3 base_color, float metalness, float roughness)
 {
-	vec3 light = normalize(world_light_dir);
-
-	float shadow = get_shadow_factor(0);
-	vec3 color = cooktorrance_one_light_direct(normal, look, light, light_sources[0].color, base_color, metalness, roughness)*shadow;
+	vec3 color = vec3(0.0);
+	for(int i=0; i<max_lights; ++i)
+		if(light_sources[i].type!=0)
+		{
+			IncomingLight incoming = get_incoming_light(i, world_vertex.xyz);
+			float shadow = get_shadow_factor(i);
+			color += cooktorrance_one_light_direct(normal, look, incoming.direction, base_color, metalness, roughness)*incoming.color*shadow;
+		}
 
 	color += cooktorrance_environment(normal, look, base_color, metalness, roughness);