X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=shaderlib%2Fcommon.glsl;h=481d86c48a604bfe2b1622836a72aaee3a94ffe5;hb=1420854eb3827b8229bae2c2c6cebdd34a320f13;hp=94237c7acfd3cec3626497c85761db24b00e9106;hpb=82282de52e8e8f3bbafefaf92bf76f53f2c2495e;p=libs%2Fgl.git

diff --git a/shaderlib/common.glsl b/shaderlib/common.glsl
index 94237c7a..481d86c4 100644
--- a/shaderlib/common.glsl
+++ b/shaderlib/common.glsl
@@ -8,6 +8,7 @@ uniform EnvMap
 
 uniform sampler2D normal_map;
 uniform samplerCube environment_map;
+uniform samplerCube irradiance_map;
 
 layout(constant_id=auto) const bool use_normal_map = false;
 
@@ -37,7 +38,7 @@ void standard_transform()
 	mat4 vertex_tf = get_vertex_transform();
 	mat3 normal_tf = get_normal_transform();
 
-	vec4 world_vertex = vertex_tf*get_vertex_position();
+	out vec4 world_vertex = vertex_tf*get_vertex_position();
 	vec4 eye_vertex = eye_world_matrix*world_vertex;
 	gl_Position = clip_eye_matrix*eye_vertex;
 
@@ -46,22 +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 vec3 world_light_dir = light_sources[0].position.xyz-world_vertex.xyz*light_sources[0].position.w;
-
-	out vec3 world_halfway_dir = normalize(world_light_dir-world_look_dir);
-
 	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);
-	}
-
-	shadow_transform(world_vertex);
 }
 
 virtual void custom_transform()
@@ -76,6 +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)
@@ -84,15 +81,30 @@ virtual vec3 get_fragment_normal()
 		return normalize(world_normal);
 }
 
-virtual vec3 get_environment_sample(vec3 direction)
+virtual IncomingLight get_incoming_light(int index, vec3 world_pos)
+{
+	vec4 light_pos = light_sources[index].position;
+	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)
 {
-	return texture(environment_map, env_world_matrix*direction).rgb;
+	float lod = (2-roughness)*roughness*(textureQueryLevels(environment_map)-1);
+	return textureLod(environment_map, env_world_matrix*direction, lod).rgb;
 }
 
 virtual vec3 get_reflection(vec3 normal, vec3 look)
 {
 	vec3 reflect_dir = reflect(look, normal);
-	return get_environment_sample(reflect_dir);
+	return get_environment_sample(reflect_dir, 0.0);
+}
+
+virtual vec3 get_irradiance_sample(vec3 normal)
+{
+	return texture(irradiance_map, env_world_matrix*normal).rgb;
 }
 
 vec3 apply_fog(vec3 color)