step 3/4: Move linuxport to trunk. How'd I get roped into this?

git-svn-id: https://xbmc.svn.sourceforge.net/svnroot/xbmc/trunk@23097 568bbfeb-2a22-0410-94d2-cc84cf5bfa90

1 files changed, 134 insertions, 0 deletions

diff --git a/guilib/FrameBufferObject.cpp b/guilib/FrameBufferObject.cpp
new file mode 100644
index 0000000000..fb9530c8da
--- /dev/null
+++ b/guilib/FrameBufferObject.cpp
@@ -0,0 +1,134 @@
+/*
+ *      Copyright (C) 2005-2008 Team XBMC
+ *      http://www.xbmc.org
+ *
+ *  This Program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2, or (at your option)
+ *  any later version.
+ *
+ *  This Program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with XBMC; see the file COPYING.  If not, write to
+ *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ *  http://www.gnu.org/copyleft/gpl.html
+ *
+ */
+
+#include "system.h"
+
+#ifdef HAS_GL
+#include "../xbmc/Settings.h"
+#include "WindowingFactory.h"
+#include "FrameBufferObject.h"
+#include "utils/log.h"
+
+//////////////////////////////////////////////////////////////////////
+// CFrameBufferObject
+//////////////////////////////////////////////////////////////////////
+
+CFrameBufferObject::CFrameBufferObject()
+{
+  m_fbo = 0;
+  m_valid = false;
+  m_supported = false;
+  m_bound = false;
+  m_texid = 0;
+}
+
+bool CFrameBufferObject::IsSupported()
+{
+  if(g_Windowing.IsExtSupported("GL_EXT_framebuffer_object"))
+    m_supported = true;
+  else
+    m_supported = false;
+  return m_supported;
+}
+
+bool CFrameBufferObject::Initialize()
+{
+  if (!IsSupported())
+    return false;
+
+  Cleanup();
+
+  glGenFramebuffersEXT(1, &m_fbo);
+  VerifyGLState();
+
+  if (!m_fbo)
+    return false;
+
+  m_valid = true;
+  return true;
+}
+
+void CFrameBufferObject::Cleanup()
+{
+  if (!IsValid())
+    return;
+
+  if (m_fbo)
+    glDeleteFramebuffersEXT(1, &m_fbo);
+
+  if (m_texid)
+    glDeleteTextures(1, &m_texid);
+
+  m_texid = 0;
+  m_fbo = 0;
+  m_valid = false;
+  m_bound = false;
+}
+
+bool CFrameBufferObject::CreateAndBindToTexture(GLenum target, int width, int height, GLenum format,
+                                                GLenum filter, GLenum clampmode)
+{
+  if (!IsValid())
+    return false;
+
+  if (m_texid)
+    glDeleteTextures(1, &m_texid);
+
+  glGenTextures(1, &m_texid);
+  glBindTexture(target, m_texid);
+  glTexImage2D(target, 0, format,  width, height, 0, format, GL_UNSIGNED_BYTE, NULL);
+  glTexParameteri(target, GL_TEXTURE_WRAP_S, clampmode);
+  glTexParameteri(target, GL_TEXTURE_WRAP_T, clampmode);
+  glTexParameteri(target, GL_TEXTURE_MAG_FILTER, filter);
+  glTexParameteri(target, GL_TEXTURE_MIN_FILTER, filter);
+  VerifyGLState();
+  return BindToTexture(target, m_texid);
+}
+
+void CFrameBufferObject::SetFiltering(GLenum target, GLenum mode)
+{
+  glBindTexture(target, m_texid);
+  glTexParameteri(target, GL_TEXTURE_MAG_FILTER, mode);
+  glTexParameteri(target, GL_TEXTURE_MIN_FILTER, mode);
+}
+
+bool CFrameBufferObject::BindToTexture(GLenum target, GLuint texid)
+{
+  if (!IsValid())
+    return false;
+
+  m_bound = false;
+  glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_fbo);
+  glBindTexture(target, texid);
+  glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, target, texid, 0);
+  VerifyGLState();
+  GLenum status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
+  glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
+  if (status != GL_FRAMEBUFFER_COMPLETE_EXT)
+  {
+    VerifyGLState();
+    return false;
+  }
+  m_bound = true;
+  return true;
+}
+
+#endif