X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fframebuffer.h;h=f34ecf5c6eeea0204eaa685dfee5e7f4537e75b9;hb=00d3ccedefb1a5efb3d2d4625a2b68446703fbab;hp=236d29e6a3dd65a8fddcf3bdc567b92530b80c21;hpb=6afbace895a7bbcf216ab8e48280ea0303ab5892;p=libs%2Fgl.git

diff --git a/source/framebuffer.h b/source/framebuffer.h
index 236d29e6..f34ecf5c 100644
--- a/source/framebuffer.h
+++ b/source/framebuffer.h
@@ -5,6 +5,7 @@
 #include "bindable.h"
 #include "gl.h"
 #include "texturecube.h"
+#include <msp/gl/extensions/ext_framebuffer_object.h>
 
 namespace Msp {
 namespace GL {
@@ -57,6 +58,13 @@ enum RWBuffer
 	FRONT_AND_BACK = GL_FRONT_AND_BACK
 };
 
+class framebuffer_incomplete: public std::runtime_error
+{
+public:
+	framebuffer_incomplete(FramebufferStatus);
+	virtual ~framebuffer_incomplete() throw() { }
+};
+
 /**
 Framebuffer objects can be used to perform offscreen rendering.  The most
 common application is rendering to a texture, which can then be used for
@@ -90,10 +98,21 @@ private:
 		void clear();
 	};
 
+	struct Viewport
+	{
+		int left;
+		int bottom;
+		unsigned width;
+		unsigned height;
+
+		Viewport();
+	};
+
 	unsigned id;
 	std::vector<Attachment> attachments;
 	unsigned width;
 	unsigned height;
+	Viewport view;
 	mutable unsigned dirty;
 
 	Framebuffer(unsigned);
@@ -119,6 +138,13 @@ public:
 	or one of the error status codes otherwise. */
 	FramebufferStatus check_status() const;
 
+	/** Ensures that the framebuffer is complete, throwing an exception if it
+	isn't. */
+	void require_complete() const;
+
+	void viewport(int, int, unsigned, unsigned);
+	void reset_viewport();
+
 	void clear(BufferBits);
 
 	/** Blits a region from another framebuffer into this one.  If the source