1 files changed, 70 insertions, 0 deletions
diff --git a/vcl/opengl/framebuffer.cxx b/vcl/opengl/framebuffer.cxx
new file mode 100644
index 000000000000..29f9a781130a
--- /dev/null
+++ b/vcl/opengl/framebuffer.cxx
@@ -0,0 +1,70 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <sal/log.hxx>
+
+#include <opengl/framebuffer.hxx>
+
+#include <vcl/opengl/OpenGLHelper.hxx>
+
+OpenGLFramebuffer::OpenGLFramebuffer() :
+    mnId( 0 ),
+    mpPrevFramebuffer( NULL ),
+    mpNextFramebuffer( NULL )
+{
+    glGenFramebuffers( 1, &mnId );
+    SAL_INFO( "vcl.opengl", "Created framebuffer " << (int)mnId );
+}
+
+OpenGLFramebuffer::~OpenGLFramebuffer()
+{
+    glDeleteFramebuffers( 1, &mnId );
+}
+
+void OpenGLFramebuffer::Bind()
+{
+    glBindFramebuffer( GL_FRAMEBUFFER, mnId );
+    SAL_INFO( "vcl.opengl", "Binding framebuffer " << (int)mnId );
+    CHECK_GL_ERROR();
+}
+
+void OpenGLFramebuffer::Unbind()
+{
+    glBindFramebuffer( GL_FRAMEBUFFER, 0 );
+    SAL_INFO( "vcl.opengl", "Binding default framebuffer" );
+    CHECK_GL_ERROR();
+}
+
+bool OpenGLFramebuffer::IsFree() const
+{
+    return (!maAttachedTexture);
+}
+
+bool OpenGLFramebuffer::IsAttached( const OpenGLTexture& rTexture ) const
+{
+    return ( maAttachedTexture == rTexture );
+}
+
+void OpenGLFramebuffer::AttachTexture( const OpenGLTexture& rTexture )
+{
+    SAL_INFO( "vcl.opengl", "Attaching texture " << rTexture.Id() << " to framebuffer " << (int)mnId );
+    maAttachedTexture = rTexture;
+    glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
+                            maAttachedTexture.Id(), 0 );
+    CHECK_GL_ERROR();
+}
+
+void OpenGLFramebuffer::DetachTexture()
+{
+    maAttachedTexture = OpenGLTexture();
+    glFramebufferTexture2D( GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 0, 0 );
+    CHECK_GL_ERROR();
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */