1 files changed, 49 insertions, 14 deletions

diff --git a/src/Renderer.h b/src/Renderer.h
index eed65bb..8c531a5 100644
--- a/src/Renderer.h
+++ b/src/Renderer.h
@@ -23,6 +23,7 @@
 #include "gl.h"
 #include "BSPTree.h"
 #include "Shader.h"
+#include "ShadowVolume.h"
 #include <limits>
 
 
@@ -36,38 +37,72 @@ class Renderer {
 
     template <typename T>
     void render(const T &triangles, const vmml::vec3f &lightPos) {
+      if(triangles.empty())
+        return;
+
+      // Create shadow volumes
+      std::vector<ShadowVolume> shadowVolumes;
+      for(typename T::const_iterator t = triangles.begin(); t != triangles.end(); ++t) {
+        shadowVolumes.push_back(ShadowVolume(t->triangle, lightPos));
+      }
+
+
       glLightfv(GL_LIGHT0, GL_POSITION, vmml::vec4f(lightPos, 1).array);
 
+      // Render with ambient light
       Shader::enable(ambientShader);
       glBlendFunc(GL_ONE, GL_ZERO);
       glDepthFunc(GL_LEQUAL);
-      //glStencilFunc(GL_ALWAYS, 0, std::numeric_limits<GLuint>::max());
-      //glStencilOp(GL_KEEP, GL_INCR, GL_KEEP);
+      glStencilFunc(GL_ALWAYS, 0, std::numeric_limits<GLuint>::max());
+      glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
 
-      typename T::const_iterator t = triangles.begin();
-      if(t == triangles.end())
-        return;
-
-      useTexture(t->triangle.getTexture());
+      useTexture(triangles.front().triangle.getTexture());
 
       glBegin(GL_TRIANGLES);
-      for(; t != triangles.end(); ++t) {
+      for(typename T::const_iterator t = triangles.begin(); t != triangles.end(); ++t) {
         renderTriangle(t->triangle);
       }
       glEnd();
 
+      // Render shadow volumes
+      glClear(GL_STENCIL_BUFFER_BIT);
+      glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
+      glDepthMask(GL_FALSE);
+      Shader::disable();
+
+      glFrontFace(GL_CCW);
+      glStencilOp(GL_KEEP, GL_INCR_WRAP, GL_KEEP);
+
+      glBegin(GL_TRIANGLES);
+      for(std::vector<ShadowVolume>::iterator v = shadowVolumes.begin(); v != shadowVolumes.end(); ++v) {
+        v->render();
+      }
+      glEnd();
+
+      glFrontFace(GL_CW);
+      glStencilOp(GL_KEEP, GL_DECR_WRAP, GL_KEEP);
+
+      glBegin(GL_TRIANGLES);
+      for(std::vector<ShadowVolume>::iterator v = shadowVolumes.begin(); v != shadowVolumes.end(); ++v) {
+        v->render();
+      }
+      glEnd();
+
+      glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+      glDepthMask(GL_TRUE);
+      glFrontFace(GL_CCW);
+
+      // Render with point light
       Shader::enable(lightShader);
       glBlendFunc(GL_ONE, GL_ONE);
       glDepthFunc(GL_EQUAL);
-      //glStencilFunc(GL_EQUAL, 0, std::numeric_limits<GLuint>::max());
-      //glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
-
-      t = triangles.begin();
+      glStencilFunc(GL_EQUAL, 0, std::numeric_limits<GLuint>::max());
+      glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
 
-      useTexture(t->triangle.getTexture());
+      useTexture(triangles.front().triangle.getTexture());
 
       glBegin(GL_TRIANGLES);
-      for(; t != triangles.end(); ++t) {
+      for(typename T::const_iterator t = triangles.begin(); t != triangles.end(); ++t) {
         renderTriangle(t->triangle);
       }
       glEnd();