milek7/sim branch opengl 3.3 renderer import

gl/postfx.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include "shader.h"
+#include "vao.h"
+#include "framebuffer.h"
+#include "Texture.h"
+
+namespace gl
+{
+    class postfx
+    {
+    private:
+        gl::program program;
+        static std::shared_ptr<gl::shader> vertex;
+        static std::shared_ptr<gl::vao> vao;
+
+    public:
+        postfx(const std::string &s);
+        postfx(const shader &s);
+
+        void attach();
+        void apply(opengl_texture &src, framebuffer *dst);
+        void apply(std::vector<opengl_texture*> src, framebuffer *dst);
+    };
+}