light: save poly for bouncelights

include/light/bounce.hh

@@ -30,6 +30,7 @@
 #include <glm/vec3.hpp>
 
 typedef struct {
+    std::vector<glm::vec3> poly;
     glm::vec3 pos;
     std::map<int, glm::vec3> colorByStyle;
     glm::vec3 componentwiseMaxColor; // cached maximum color in the colorByStyle, used for culling so we don't need to loop through colorByStyle

light/bounce.cc

@@ -230,6 +230,7 @@ AddBounceLight(const vec3_t pos, const std::map<int, glm::vec3> &colorByStyle, c
     Q_assert(area > 0);
     
     bouncelight_t l;
+    l.poly = GLM_FacePoints(bsp, face);
     l.pos = vec3_t_to_glm(pos);
     l.colorByStyle = colorByStyle;