Add a function to require the completeness of a framebuffer

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

diff --git a/source/framebuffer.h b/source/framebuffer.h
index 236d29e6a3dd65a8fddcf3bdc567b92530b80c21..e25967aca41ddfd6b29bfa6aae211e473e1807f2 100644 (file)
--- a/source/framebuffer.h
+++ b/source/framebuffer.h
@@ -57,6 +57,13 @@ 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
@@ -119,6 +126,10 @@ 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 clear(BufferBits);
 
        /** Blits a region from another framebuffer into this one.  If the source