From 4e3efa239c9bcb5dd26b4ad9a4d43d4d6a266e6f Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <matthias@gamezock.de>
Date: Fri, 18 Dec 2009 13:31:07 +0100
Subject: Use multi-pass rendering with seperate ambient and light shaders

---
 src/Renderer.h | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

(limited to 'src/Renderer.h')

diff --git a/src/Renderer.h b/src/Renderer.h
index fb98e38..ae9af4a 100644
--- a/src/Renderer.h
+++ b/src/Renderer.h
@@ -20,19 +20,25 @@
 #ifndef ZOOM_RENDERER_H_
 #define ZOOM_RENDERER_H_
 
-#include "BSPTree.h"
 #include "gl.h"
+#include "BSPTree.h"
+#include "Shader.h"
+
 
 namespace Zoom {
 
 class Renderer {
   public:
-    Renderer() : activeTexture(0), renderVisitor(this) {}
+    Renderer();
 
     void render(const BSPTree &tree);
 
     template <typename T>
     void render(const T &triangles) {
+      Shader::enable(ambientShader);
+      glBlendFunc(GL_ONE, GL_ZERO);
+      glDepthFunc(GL_LEQUAL);
+
       typename T::const_iterator t = triangles.begin();
       if(t == triangles.end())
         return;
@@ -44,6 +50,20 @@ class Renderer {
         renderTriangle(t->triangle);
       }
       glEnd();
+
+      Shader::enable(lightShader);
+      glBlendFunc(GL_ONE, GL_ONE);
+      glDepthFunc(GL_EQUAL);
+
+      t = triangles.begin();
+
+      useTexture(t->triangle.getTexture());
+
+      glBegin(GL_TRIANGLES);
+      for(; t != triangles.end(); ++t) {
+        renderTriangle(t->triangle);
+      }
+      glEnd();
     }
 
     struct TextureSorter {
@@ -68,6 +88,7 @@ class Renderer {
         Renderer *renderer;
     };
 
+    boost::shared_ptr<Shader> ambientShader, lightShader;
     unsigned activeTexture;
 
     const RenderVisitor renderVisitor;
-- 
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