Support multiple lights in a single pass

[libs/gl.git] / source / materials / lighting.cpp

diff --git a/source/materials/lighting.cpp b/source/materials/lighting.cpp
index 20c812fe58cfd3e6ee7434bef5f10707db67f01c..cd04d1b4af153a981973c75e7eb8ff642d8f7545 100644 (file)
--- a/source/materials/lighting.cpp
+++ b/source/materials/lighting.cpp
@@ -17,6 +17,14 @@ Lighting::Lighting()
        set_ambient(0.2f);
        set_fog_color(Color(0.0f, 0.0f, 0.0f, 0.0f));
        set_fog_density(0.0f);
+
+       for(unsigned i=0; i<8; ++i)
+       {
+               string base = format("light_sources[%d]", i);
+               shdata.uniform(base+".position", Vector4(0, 0, 1, 0));
+               shdata.uniform(base+".color", 0.0f, 0.0f, 0.0f);
+               shdata.uniform(base+".enabled", 0);
+       }
 }
 
 void Lighting::set_ambient(const Color &a)
@@ -55,7 +63,10 @@ void Lighting::detach(const Light &l)
 {
        auto i = find_member(lights, &l, &AttachedLight::light);
        if(i!=lights.end())
+       {
                lights.erase(i);
+               shdata.uniform(format("light_sources[%d].enabled", lights.size()), 0);
+       }
 }
 
 const ProgramData &Lighting::get_shader_data() const