X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=shaderlib%2Fcommon.glsl;h=481d86c48a604bfe2b1622836a72aaee3a94ffe5;hb=caa1348f9478fcd834a1fdcbafed7cccf6b582e2;hp=dde09c12cff45bca1a4a60fe95d6a37305404ef8;hpb=a2b0d155023ca23afe7848ae5d17e0f7bc328525;p=libs%2Fgl.git

diff --git a/shaderlib/common.glsl b/shaderlib/common.glsl
index dde09c12..481d86c4 100644
--- a/shaderlib/common.glsl
+++ b/shaderlib/common.glsl
@@ -47,16 +47,10 @@ void standard_transform()
 	vec3 world_binormal = cross(world_normal, world_tangent);
 	out mat3 world_tbn_matrix = mat3(world_tangent, world_binormal, world_normal);
 
-	vec3 eye_pos = (inverse(eye_world_matrix)*vec4(0.0, 0.0, 0.0, 1.0)).xyz;
+	vec3 eye_pos = world_eye_matrix[3].xyz;
 	out vec3 world_look_dir = normalize(world_vertex.xyz-eye_pos);
 
 	out float fog_coord = eye_vertex.z;
-
-	if(use_clipping)
-	{
-		for(int i=0; i<max_clip_planes; ++i)
-			gl_ClipDistance[i] = dot(world_vertex, clip_planes[i].equation);
-	}
 }
 
 virtual void custom_transform()
@@ -71,6 +65,14 @@ void main()
 }
 
 #pragma MSP stage(fragment)
+struct IncomingLight
+{
+	vec3 direction;
+	vec3 color;
+};
+
+layout(location=0) out vec4 frag_color;
+
 virtual vec3 get_fragment_normal()
 {
 	if(use_normal_map)
@@ -79,10 +81,13 @@ virtual vec3 get_fragment_normal()
 		return normalize(world_normal);
 }
 
-virtual vec3 get_light_direction(int index)
+virtual IncomingLight get_incoming_light(int index, vec3 world_pos)
 {
 	vec4 light_pos = light_sources[index].position;
-	return normalize(light_pos.xyz-world_vertex.xyz*light_pos.w);
+	vec3 rel_pos = light_pos.xyz-world_pos*light_pos.w;
+	float d = length(rel_pos);
+	float attenuation = 1.0/dot(vec3(1.0, d, d*d), light_sources[index].attenuation);
+	return IncomingLight(rel_pos/d, light_sources[index].color*attenuation);
 }
 
 virtual vec3 get_environment_sample(vec3 direction, float roughness)