Rewrite Framebuffer to defer attach/detach operations until bound

[libs/gl.git] / source / framebuffer.h

diff --git a/source/framebuffer.h b/source/framebuffer.h
index b4f43f77f47473a12381eb499eb13a3c6d658c13..514208d6db161fd3635f39538760bc6435160b94 100644 (file)
--- a/source/framebuffer.h
+++ b/source/framebuffer.h
@@ -86,25 +86,29 @@ private:
                        Renderbuffer *rbuf;
                        Texture *tex;
                };
+               int level;
 
                Attachment(FramebufferAttachment);
-               Attachment &operator=(Renderbuffer &);
-               Attachment &operator=(Texture &);
+               void set(Renderbuffer &);
+               void set(Texture &, int);
+               void clear();
        };
 
        unsigned id;
        std::vector<Attachment> attachments;
        unsigned width;
        unsigned height;
+       mutable unsigned dirty;
 
-       static int sys_viewport[4];
-
+       Framebuffer(unsigned);
 public:
        Framebuffer();
        ~Framebuffer();
 
-       void bind() const;
-
+private:
+       void update_attachment(unsigned) const;
+       void check_size();
+public:
        void attach(FramebufferAttachment attch, Renderbuffer &rbuf);
        void attach(FramebufferAttachment attch, Texture2D &tex, int level);
        void detach(FramebufferAttachment attch);
@@ -116,21 +120,24 @@ public:
        */
        FramebufferStatus check_status() const;
 
+       void clear(BufferBits);
+
+       void bind() const;
+
+       static const Framebuffer *current();
        static void unbind();
+
+       static Framebuffer &system();
 private:
-       void maybe_bind() const;
-       Attachment &get_or_create_attachment(FramebufferAttachment);
-       void check_size();
+       unsigned get_attachment_index(FramebufferAttachment);
+
+public:
+       
 };
 
 inline BufferBits operator|(BufferBits a, BufferBits b)
 { return static_cast<BufferBits>(static_cast<int>(a)|static_cast<int>(b)); }
 
-void viewport(int, int, unsigned, unsigned);
-void clear(BufferBits);
-void draw_buffer(RWBuffer);
-void read_buffer(RWBuffer);
-
 } // namespace GL
 } // namespace Msp