X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fmaterials%2Fpbrmaterial.h;h=0204451b63efa0b595f39552e374da2648d819c7;hb=HEAD;hp=9669bc35a3a1086e117c73cc8aa2e2f4d677d315;hpb=ae45c0397e2cb8f0a01f2f31d01c95ff3870271e;p=libs%2Fgl.git

diff --git a/source/materials/pbrmaterial.h b/source/materials/pbrmaterial.h
index 9669bc35..e96236d2 100644
--- a/source/materials/pbrmaterial.h
+++ b/source/materials/pbrmaterial.h
@@ -8,6 +8,15 @@ namespace GL {
 
 class Texture2D;
 
+/**
+A physically-based material using the Cook-Torrance BRDF.
+
+The material is characterized by base color, metalness and roughness.  Fully
+metallic materials have no diffuse reflection and their specular reflection is
+tinted by the base color.  For fully dielectric materials base color determines
+the color of the diffuse reflection; specular reflection is untinted.
+Roughness affects how blurry specular reflections are.
+*/
 class PbrMaterial: public Material
 {
 public:
@@ -25,6 +34,7 @@ public:
 	
 private:
 	Property<Color> base_color;
+	Property<Color> tint;
 	Property<Vector3> normal;
 	Property<float> metalness;
 	Property<float> roughness;
@@ -38,7 +48,6 @@ private:
 public:
 	PbrMaterial();
 
-private:
 	static const Texture2D &get_or_create_fresnel_lookup();
 
 protected:
@@ -51,6 +60,7 @@ public:
 
 	void set_base_color(const Color &);
 	void set_base_color_map(const Texture *);
+	void set_tint(const Color &);
 	void set_normal_map(const Texture *);
 	void set_metalness(float);
 	void set_metalness_map(const Texture *);