X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=shaderlib%2Fphong.glsl;h=234897116183a4997c625687447b65172ef8036d;hb=ae423e6ef278388f92802fbae34b1c7ec339292f;hp=482f895b44e3e80e50e92586a5c2144319b110c7;hpb=a3c33df71e507380100069ad7ef802b61de351bb;p=libs%2Fgl.git

diff --git a/shaderlib/phong.glsl b/shaderlib/phong.glsl
index 482f895b..23489711 100644
--- a/shaderlib/phong.glsl
+++ b/shaderlib/phong.glsl
@@ -14,6 +14,7 @@ struct BasicMaterialParameters
 uniform BasicMaterial
 {
 	BasicMaterialParameters basic_material;
+	float alpha_cutoff;
 };
 
 uniform sampler2D diffuse_map;
@@ -30,8 +31,7 @@ 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_reflectivity = false;
 layout(constant_id=auto) const bool use_reflectivity_map = false;
-layout(constant_id=auto) const bool use_sky = false;
-layout(constant_id=auto) const bool use_fog = false;
+layout(constant_id=auto) const bool use_alpha_cutoff = false;
 
 #pragma MSP stage(fragment)
 virtual vec4 get_diffuse_color()
@@ -79,32 +79,29 @@ vec3 phong_ambient(vec3 surface_diffuse)
 	return ambient_color.rgb*surface_diffuse;
 }
 
-vec3 phong_one_light(vec3 light, vec3 normal, vec3 look, vec3 light_color, vec3 surface_diffuse, vec3 surface_specular, float shininess)
+vec3 phong_one_light(vec3 light, vec3 normal, vec3 look, vec3 surface_diffuse, vec3 surface_specular, float shininess)
 {
 	float diffuse_intensity = max(dot(light, normal), 0.0);
-	vec3 color = light_color*surface_diffuse*diffuse_intensity;
+	vec3 color = surface_diffuse*diffuse_intensity;
 	if(use_specular)
 	{
-		/* The light vector points towards the light, so reflected will point
-		towards the surface - but so does the look vector. */
-		vec3 reflected = reflect(light, normal);
-		float specular_intensity = pow(max(dot(reflected, look), 0.0), shininess);
-		color += light_color*surface_specular*specular_intensity;
+		vec3 reflected = reflect(look, normal);
+		float specular_intensity = pow(max(dot(reflected, light), 0.0), shininess);
+		color += surface_specular*specular_intensity;
 	}
 	return color;
 }
 
 vec3 phong_lighting(vec3 normal, vec3 look, vec3 surface_diffuse, vec3 surface_specular, float shininess)
 {
-	vec3 light;
-	if(use_normal_map)
-		light = normalize(tbn_light_dir);
-	else
-		light = normalize(eye_light_dir);
-
 	vec3 color = phong_ambient(surface_diffuse);
-	float shadow = get_shadow_factor(0);
-	color += phong_one_light(light, normal, look, light_sources[0].diffuse.rgb, surface_diffuse, surface_specular, shininess)*shadow;
+	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, world_vertex);
+			color += phong_one_light(incoming.direction, normal, look, surface_diffuse, surface_specular, shininess)*incoming.color*shadow;
+		}
 
 	if(use_emission)
 		color += get_emission_color();
@@ -117,20 +114,13 @@ vec3 phong_lighting(vec3 normal, vec3 look, vec3 surface_diffuse, vec3 surface_s
 
 void main()
 {
-	vec3 normal;
-	vec3 look;
-	if(use_normal_map)
-	{
-		normal = get_fragment_normal();
-		look = normalize(tbn_look_dir);
-	}
-	else
-	{
-		normal = normalize(eye_normal);
-		look = normalize(eye_look_dir);
-	}
-
 	vec4 surface_diffuse = get_diffuse_color();
+	if(use_alpha_cutoff && surface_diffuse.a<alpha_cutoff)
+		discard;
+
+	vec3 normal = get_fragment_normal();
+	vec3 look = normalize(world_look_dir);
+
 	vec3 surface_specular = get_specular_color();
 	float shininess = get_shininess_value();