X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fframebuffer.cpp;h=3d9b0133622b3bcec7590c440b8841f478217d16;hb=ccbcce1d5c7fae8ec644e465ac936f5c39000e57;hp=ea28d5db2d261eeb999d1e6c05eea38b6aefe70a;hpb=6fa59eb26c39443eb44feecd17b7a8ea45411730;p=libs%2Fgl.git

diff --git a/source/framebuffer.cpp b/source/framebuffer.cpp
index ea28d5db..3d9b0133 100644
--- a/source/framebuffer.cpp
+++ b/source/framebuffer.cpp
@@ -1,11 +1,12 @@
 /* $Id$
 
 This file is part of libmspgl
-Copyright © 2007  Mikko Rasa, Mikkosoft Productions
+Copyright © 2007-2011  Mikko Rasa, Mikkosoft Productions
 Distributed under the LGPL
 */
 
 #include "extension.h"
+#include "ext_framebuffer_blit.h"
 #include "ext_framebuffer_object.h"
 #include "framebuffer.h"
 #include "misc.h"
@@ -146,6 +147,39 @@ void Framebuffer::clear(BufferBits bits)
 	glClear(bits);
 }
 
+void Framebuffer::blit_from(const Framebuffer &other, int sx0, int sy0, int sx1, int sy1, int dx0, int dy0, int dx1, int dy1, BufferBits bits, bool filter)
+{
+	static RequireExtension _ext("GL_EXT_framebuffer_blit");
+
+	const Framebuffer *old = current();
+	if(set_current(this))
+	{
+		glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, id);
+		if(dirty)
+		{
+			update_attachment(dirty);
+			dirty = 0;
+		}
+	}
+	if(old!=&other)
+		glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, other.id);
+
+	glBlitFramebufferEXT(sx0, sy0, sx1, sy1, dx0, dy0, dx1, dy1, bits, (filter ? GL_LINEAR : GL_NEAREST));
+
+	set_current(old);
+	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, (old ? old->id : 0));
+}
+
+void Framebuffer::blit_from(const Framebuffer &other, int sx, int sy, unsigned wd, unsigned ht, int dx, int dy, BufferBits bits)
+{
+	blit_from(other, sx, sy, sx+wd, sy+ht, dx, dy, dx+wd, dy+ht, bits, false);
+}
+
+void Framebuffer::blit_from(const Framebuffer &other, BufferBits bits, bool filter)
+{
+	blit_from(other, 0, 0, other.width, other.height, 0, 0, width, height, bits, filter);
+}
+
 void Framebuffer::bind() const
 {
 	if(set_current(this))