Use multi-pass rendering with seperate ambient and light shaders

1 files changed, 26 insertions, 3 deletions

diff --git a/src/Shader.h b/src/Shader.h
index 8111f0c..e1fdde9 100644
--- a/src/Shader.h
+++ b/src/Shader.h
@@ -21,19 +21,42 @@
 #define ZOOM_SHADER_H_
 
 #include "gl.h"
+
 #include <string>
+#include <boost/shared_ptr.hpp>
 
 namespace Zoom {
 
 class Shader {
   public:
-    static bool loadProgram(const std::string &vertexShader, const std::string &fragmentShader);
+    static boost::shared_ptr<Shader> load(const std::string &vertexShader, const std::string &fragmentShader);
 
-  private:
-    Shader();
+    static void enable(boost::shared_ptr<Shader> shader) {
+      if(shader)
+        glUseProgramObjectARB(shader->handle);
+      else
+        glUseProgramObjectARB(0);
+    }
+
+    static void disable() {
+      enable(boost::shared_ptr<Shader>());
+    }
+
+    ~Shader() {
+      glDeleteObjectARB(handle);
+    }
 
+  private:
     static GLhandleARB loadShader(const std::string &name, GLenum type);
     static void printInfoLog(GLhandleARB obj);
+
+    Shader(GLhandleARB handle0) : handle(handle0) {}
+
+    // Prevent shallow copy
+    Shader(const Shader &o);
+    Shader& operator=(const Shader &o);
+
+    GLhandleARB handle;
 };
 
 }