X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flight.h;h=77542a54f7404b3a346ff8ec5de3cb1399ee6ffc;hb=61ff840cd211f10d45dca8c4dad2cca5f68aaa42;hp=cf9ab8a1acb69cdbec2cdfead4ad2580e66f40e7;hpb=48b1ab4fff00c49cc15d70a354eedb3d7a2f3e87;p=libs%2Fgl.git

diff --git a/source/light.h b/source/light.h
index cf9ab8a1..77542a54 100644
--- a/source/light.h
+++ b/source/light.h
@@ -8,9 +8,23 @@
 namespace Msp {
 namespace GL {
 
+class Matrix;
+class ProgramData;
+
 class Light
 {
 private:
+	enum ParameterMask
+	{
+		DIFFUSE = 1,
+		SPECULAR = 2,
+		POSITION = 4,
+		SPOT_DIR = 8,
+		SPOT_EXP = 16,
+		SPOT_CUTOFF = 32,
+		ATTENUATION = 64
+	};
+
 	Color diffuse;
 	Color specular;
 	Vector4 position;
@@ -22,6 +36,10 @@ private:
 public:
 	Light();
 
+private:
+	void update_parameter(int, int = -1) const;
+
+public:
 	void set_diffuse(const Color &c);
 	void set_specular(const Color &c);
 	const Color &get_diffuse() const { return diffuse; }
@@ -38,6 +56,7 @@ public:
 	void set_attenuation(float, float, float);
 	const float *get_attenuation() const { return attenuation; }
 
+	void update_shader_data(ProgramData &, const Matrix &, unsigned) const;
 	void bind() const { return bind_to(0); }
 	void bind_to(unsigned) const;