X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=shaderlib%2Fcommon.glsl;h=1d5819a1bfc812648cfb800587b5071ab776bd72;hp=94237c7acfd3cec3626497c85761db24b00e9106;hb=6b9338845dfee441cd18ad6c633e4feef8ad14e1;hpb=87b74b1263710b0acb9e0b72283e972fd54ee91b

diff --git a/shaderlib/common.glsl b/shaderlib/common.glsl
index 94237c7a..1d5819a1 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;
 
@@ -84,15 +85,21 @@ virtual vec3 get_fragment_normal()
 		return normalize(world_normal);
 }
 
-virtual vec3 get_environment_sample(vec3 direction)
+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)