gst-libs/gst/gl/gstglframebuffer.c - mtk-gst-plugins-bad-debian - Git at Google

 /*
  * GStreamer
  * Copyright (C) 2013 Matthew Waters <ystreet00@gmail.com>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library 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
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public
  * License along with this library; if not, write to the
  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif

 #include "gl.h"
 #include "gstglframebuffer.h"

 GST_DEBUG_CATEGORY_STATIC (gst_gl_framebuffer_debug);
 #define GST_CAT_DEFAULT gst_gl_framebuffer_debug

 #define DEBUG_INIT \
   GST_DEBUG_CATEGORY_INIT (gst_gl_framebuffer_debug, "glframebuffer", 0, "GL Framebuffer");

 G_DEFINE_TYPE_WITH_CODE (GstGLFramebuffer, gst_gl_framebuffer, G_TYPE_OBJECT,
     DEBUG_INIT);

 #define GST_GL_FRAMEBUFFER_GET_PRIVATE(o) \
   (G_TYPE_INSTANCE_GET_PRIVATE((o), GST_TYPE_GL_FRAMEBUFFER, GstGLFramebufferPrivate))

 static void gst_gl_framebuffer_finalize (GObject * object);

 struct _GstGLFramebufferPrivate
 {
   gint width;
   gint height;

   guint fbo;
   guint depth;
 };

 static void
 gst_gl_framebuffer_class_init (GstGLFramebufferClass * klass)
 {
   g_type_class_add_private (klass, sizeof (GstGLFramebufferPrivate));

   G_OBJECT_CLASS (klass)->finalize = gst_gl_framebuffer_finalize;
 }

 static void
 gst_gl_framebuffer_init (GstGLFramebuffer * fbo)
 {
   fbo->priv = GST_GL_FRAMEBUFFER_GET_PRIVATE (fbo);
 }

 static void
 gst_gl_framebuffer_finalize (GObject * object)
 {
   GstGLFramebuffer *fbo = GST_GL_FRAMEBUFFER (object);

   if (fbo->context) {
     gst_object_unref (fbo->context);
     fbo->context = NULL;
   }

   G_OBJECT_CLASS (gst_gl_framebuffer_parent_class)->finalize (object);
 }

 GstGLFramebuffer *
 gst_gl_framebuffer_new (GstGLContext * context)
 {
   GstGLFramebuffer *fbo = g_object_new (GST_TYPE_GL_FRAMEBUFFER, NULL);

   fbo->context = gst_object_ref (context);

   return fbo;
 }

 gboolean
 gst_gl_framebuffer_generate (GstGLFramebuffer * frame, gint width, gint height,
     guint * fbo, guint * depth)
 {
   GLuint fake_texture = 0;
   const GstGLFuncs *gl;

   g_return_val_if_fail (GST_IS_GL_FRAMEBUFFER (frame), FALSE);
   g_return_val_if_fail (fbo != NULL && depth != NULL, FALSE);
   g_return_val_if_fail (width > 0 && height > 0, FALSE);

   gl = frame->context->gl_vtable;

   GST_TRACE ("creating FBO dimensions:%ux%u", width, height);

   if (!gl->GenFramebuffers) {
     gst_gl_context_set_error (frame->context,
         "Context, EXT_framebuffer_object not supported");
     return FALSE;
   }
   /* setup FBO */
   gl->GenFramebuffers (1, fbo);
   gl->BindFramebuffer (GL_FRAMEBUFFER, *fbo);

   /* setup the render buffer for depth */
   gl->GenRenderbuffers (1, depth);
   gl->BindRenderbuffer (GL_RENDERBUFFER, *depth);

   if (gst_gl_context_get_gl_api (frame->context) & GST_GL_API_OPENGL) {
     gl->RenderbufferStorage (GL_RENDERBUFFER, GL_DEPTH_COMPONENT,
         width, height);
     gl->RenderbufferStorage (GL_RENDERBUFFER, GL_DEPTH24_STENCIL8,
         width, height);
   }
   if (gst_gl_context_get_gl_api (frame->context) & GST_GL_API_GLES2) {
     gl->RenderbufferStorage (GL_RENDERBUFFER, GL_DEPTH_COMPONENT16,
         width, height);
   }

   /* setup a texture to render to */
   gl->GenTextures (1, &fake_texture);
   gl->BindTexture (GL_TEXTURE_2D, fake_texture);
   gl->TexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8,
       width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
   gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
   gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
   gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
   gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);

   /* attach the texture to the FBO to renderer to */
   gl->FramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
       GL_TEXTURE_2D, fake_texture, 0);

   /* attach the depth render buffer to the FBO */
   gl->FramebufferRenderbuffer (GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT,
       GL_RENDERBUFFER, *depth);

   if (gst_gl_context_get_gl_api (frame->context) & GST_GL_API_OPENGL) {
     gl->FramebufferRenderbuffer (GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT,
         GL_RENDERBUFFER, *depth);
   }

   if (gl->CheckFramebufferStatus (GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
     gst_gl_context_set_error (frame->context,
         "GL framebuffer status incomplete");

     gl->DeleteTextures (1, &fake_texture);

     return FALSE;
   }

   /* unbind the FBO */
   gl->BindFramebuffer (GL_FRAMEBUFFER, 0);

   gl->DeleteTextures (1, &fake_texture);

   return TRUE;
 }

 gboolean
 gst_gl_framebuffer_use (GstGLFramebuffer * frame, gint texture_fbo_width,
     gint texture_fbo_height, GLuint fbo, GLuint depth_buffer,
     GLuint texture_fbo, GLCB cb, gint input_tex_width,
     gint input_tex_height, GLuint input_tex, gdouble proj_param1,
     gdouble proj_param2, gdouble proj_param3, gdouble proj_param4,
     GstGLDisplayProjection projection, gpointer stuff)
 {
   const GstGLFuncs *gl;
 #if GST_GL_HAVE_GLES2
   GLint viewport_dim[4];
 #endif

   g_return_val_if_fail (GST_IS_GL_FRAMEBUFFER (frame), FALSE);
   g_return_val_if_fail (input_tex_width > 0 && input_tex_height > 0, FALSE);
   g_return_val_if_fail (texture_fbo_width > 0 && texture_fbo_height > 0, FALSE);
   g_return_val_if_fail (input_tex != 0, FALSE);
   g_return_val_if_fail (fbo != 0, FALSE);
   g_return_val_if_fail (texture_fbo != 0, FALSE);
   g_return_val_if_fail (cb != NULL, FALSE);

   gl = frame->context->gl_vtable;

   GST_TRACE ("Binding v1 FBO %u dimensions:%ux%u with texture:%u "
       "dimensions:%ux%u", fbo, texture_fbo_width,
       texture_fbo_height, texture_fbo, input_tex_width, input_tex_height);

   gl->BindFramebuffer (GL_FRAMEBUFFER, fbo);

   /*setup a texture to render to */
   gl->BindTexture (GL_TEXTURE_2D, texture_fbo);

   /* attach the texture to the FBO to renderer to */
   gl->FramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
       GL_TEXTURE_2D, texture_fbo, 0);

   gst_gl_context_clear_shader (frame->context);

 #if GST_GL_HAVE_OPENGL
   if (gst_gl_context_get_gl_api (frame->context) & GST_GL_API_OPENGL) {
     gl->PushAttrib (GL_VIEWPORT_BIT);
     gl->MatrixMode (GL_PROJECTION);
     gl->PushMatrix ();
     gl->LoadIdentity ();

     switch (projection) {
       case GST_GL_DISPLAY_PROJECTION_ORTHO2D:
         gluOrtho2D (proj_param1, proj_param2, proj_param3, proj_param4);
         break;
       case GST_GL_DISPLAY_PROJECTION_PERSPECTIVE:
         gluPerspective (proj_param1, proj_param2, proj_param3, proj_param4);
         break;
       default:
         gst_gl_context_set_error (frame->context, "Unknow fbo projection %d",
             projection);
     }

     gl->MatrixMode (GL_MODELVIEW);
     gl->PushMatrix ();
     gl->LoadIdentity ();
   }
 #endif
 #if GST_GL_HAVE_GLES2
   if (gst_gl_context_get_gl_api (frame->context) & GST_GL_API_GLES2)
     gl->GetIntegerv (GL_VIEWPORT, viewport_dim);
 #endif

   gl->Viewport (0, 0, texture_fbo_width, texture_fbo_height);

 #if GST_GL_HAVE_OPENGL
   if (gst_gl_context_get_gl_api (frame->context) & GST_GL_API_OPENGL) {
     const GLenum rt[] = { GL_COLOR_ATTACHMENT0 };
     gl->DrawBuffers (1, rt);
   }
 #endif

   gl->ClearColor (0.0, 0.0, 0.0, 0.0);
   gl->Clear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

   cb (input_tex_width, input_tex_height, input_tex, stuff);

 #if GST_GL_HAVE_OPENGL
   if (gst_gl_context_get_gl_api (frame->context) & GST_GL_API_OPENGL) {
     const GLenum rt[] = { GL_NONE };
     gl->DrawBuffers (1, rt);
     gl->MatrixMode (GL_PROJECTION);
     gl->PopMatrix ();
     gl->MatrixMode (GL_MODELVIEW);
     gl->PopMatrix ();
     gl->PopAttrib ();
   }
 #endif
 #if GST_GL_HAVE_GLES2
   if (gst_gl_context_get_gl_api (frame->context) & GST_GL_API_GLES2) {
     gl->Viewport (viewport_dim[0], viewport_dim[1], viewport_dim[2],
         viewport_dim[3]);
   }
 #endif

   gl->BindFramebuffer (GL_FRAMEBUFFER, 0);

   return TRUE;
 }

 gboolean
 gst_gl_framebuffer_use_v2 (GstGLFramebuffer * frame, gint texture_fbo_width,
     gint texture_fbo_height, GLuint fbo, GLuint depth_buffer,
     GLuint texture_fbo, GLCB_V2 cb, gpointer stuff)
 {
   const GstGLFuncs *gl;
   GLint viewport_dim[4];

   g_return_val_if_fail (GST_IS_GL_FRAMEBUFFER (frame), FALSE);
   g_return_val_if_fail (texture_fbo_width > 0 && texture_fbo_height > 0, FALSE);
   g_return_val_if_fail (fbo != 0, FALSE);
   g_return_val_if_fail (texture_fbo != 0, FALSE);
   g_return_val_if_fail (cb != NULL, FALSE);

   gl = frame->context->gl_vtable;

   GST_TRACE ("Binding v2 FBO %u dimensions:%ux%u with texture:%u ",
       fbo, texture_fbo_width, texture_fbo_height, texture_fbo);

   gl->BindFramebuffer (GL_FRAMEBUFFER, fbo);

   /* setup a texture to render to */
   gl->BindTexture (GL_TEXTURE_2D, texture_fbo);

   /* attach the texture to the FBO to renderer to */
   gl->FramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
       GL_TEXTURE_2D, texture_fbo, 0);

   gl->GetIntegerv (GL_VIEWPORT, viewport_dim);

   gl->Viewport (0, 0, texture_fbo_width, texture_fbo_height);

   if (gst_gl_context_get_gl_api (frame->context) & GST_GL_API_OPENGL)
     gl->DrawBuffer (GL_COLOR_ATTACHMENT0);

   gl->ClearColor (0.0, 0.0, 0.0, 0.0);
   gl->Clear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

   /* the opengl scene */
   cb (stuff);

   if (gst_gl_context_get_gl_api (frame->context) & GST_GL_API_OPENGL)
     gl->DrawBuffer (GL_NONE);

   gl->Viewport (viewport_dim[0], viewport_dim[1],
       viewport_dim[2], viewport_dim[3]);

   gl->BindFramebuffer (GL_FRAMEBUFFER, 0);

   return TRUE;
 }

 void
 gst_gl_framebuffer_delete (GstGLFramebuffer * frame, guint fbo, guint depth)
 {
   const GstGLFuncs *gl;

   g_return_if_fail (GST_IS_GL_FRAMEBUFFER (frame));

   gl = frame->context->gl_vtable;

   GST_TRACE ("Deleting FBO %u", fbo);

   if (fbo) {
     gl->DeleteFramebuffers (1, &fbo);
   }
   if (depth) {
     gl->DeleteRenderbuffers (1, &depth);
   }
 }
	/*
	* GStreamer
	* Copyright (C) 2013 Matthew Waters <ystreet00@gmail.com>
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Library General Public
	* License as published by the Free Software Foundation; either
	* version 2 of the License, or (at your option) any later version.
	*
	* This library 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
	* Library General Public License for more details.
	*
	* You should have received a copy of the GNU Library General Public
	* License along with this library; if not, write to the
	* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
	* Boston, MA 02110-1301, USA.
	*/
	#ifdef HAVE_CONFIG_H
	#include "config.h"
	#endif

	#include "gl.h"
	#include "gstglframebuffer.h"

	GST_DEBUG_CATEGORY_STATIC (gst_gl_framebuffer_debug);
	#define GST_CAT_DEFAULT gst_gl_framebuffer_debug

	#define DEBUG_INIT \
	GST_DEBUG_CATEGORY_INIT (gst_gl_framebuffer_debug, "glframebuffer", 0, "GL Framebuffer");

	G_DEFINE_TYPE_WITH_CODE (GstGLFramebuffer, gst_gl_framebuffer, G_TYPE_OBJECT,
	DEBUG_INIT);

	#define GST_GL_FRAMEBUFFER_GET_PRIVATE(o) \
	(G_TYPE_INSTANCE_GET_PRIVATE((o), GST_TYPE_GL_FRAMEBUFFER, GstGLFramebufferPrivate))

	static void gst_gl_framebuffer_finalize (GObject * object);

	struct _GstGLFramebufferPrivate
	{
	gint width;
	gint height;

	guint fbo;
	guint depth;
	};

	static void
	gst_gl_framebuffer_class_init (GstGLFramebufferClass * klass)
	{
	g_type_class_add_private (klass, sizeof (GstGLFramebufferPrivate));

	G_OBJECT_CLASS (klass)->finalize = gst_gl_framebuffer_finalize;
	}

	static void
	gst_gl_framebuffer_init (GstGLFramebuffer * fbo)
	{
	fbo->priv = GST_GL_FRAMEBUFFER_GET_PRIVATE (fbo);
	}

	static void
	gst_gl_framebuffer_finalize (GObject * object)
	{
	GstGLFramebuffer *fbo = GST_GL_FRAMEBUFFER (object);

	if (fbo->context) {
	gst_object_unref (fbo->context);
	fbo->context = NULL;
	}

	G_OBJECT_CLASS (gst_gl_framebuffer_parent_class)->finalize (object);
	}

	GstGLFramebuffer *
	gst_gl_framebuffer_new (GstGLContext * context)
	{
	GstGLFramebuffer *fbo = g_object_new (GST_TYPE_GL_FRAMEBUFFER, NULL);

	fbo->context = gst_object_ref (context);

	return fbo;
	}

	gboolean
	gst_gl_framebuffer_generate (GstGLFramebuffer * frame, gint width, gint height,
	guint * fbo, guint * depth)
	{
	GLuint fake_texture = 0;
	const GstGLFuncs *gl;

	g_return_val_if_fail (GST_IS_GL_FRAMEBUFFER (frame), FALSE);
	g_return_val_if_fail (fbo != NULL && depth != NULL, FALSE);
	g_return_val_if_fail (width > 0 && height > 0, FALSE);

	gl = frame->context->gl_vtable;

	GST_TRACE ("creating FBO dimensions:%ux%u", width, height);

	if (!gl->GenFramebuffers) {
	gst_gl_context_set_error (frame->context,
	"Context, EXT_framebuffer_object not supported");
	return FALSE;
	}
	/* setup FBO */
	gl->GenFramebuffers (1, fbo);
	gl->BindFramebuffer (GL_FRAMEBUFFER, *fbo);

	/* setup the render buffer for depth */
	gl->GenRenderbuffers (1, depth);
	gl->BindRenderbuffer (GL_RENDERBUFFER, *depth);

	if (gst_gl_context_get_gl_api (frame->context) & GST_GL_API_OPENGL) {
	gl->RenderbufferStorage (GL_RENDERBUFFER, GL_DEPTH_COMPONENT,
	width, height);
	gl->RenderbufferStorage (GL_RENDERBUFFER, GL_DEPTH24_STENCIL8,
	width, height);
	}
	if (gst_gl_context_get_gl_api (frame->context) & GST_GL_API_GLES2) {
	gl->RenderbufferStorage (GL_RENDERBUFFER, GL_DEPTH_COMPONENT16,
	width, height);
	}

	/* setup a texture to render to */
	gl->GenTextures (1, &fake_texture);
	gl->BindTexture (GL_TEXTURE_2D, fake_texture);
	gl->TexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8,
	width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
	gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
	gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
	gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
	gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);

	/* attach the texture to the FBO to renderer to */
	gl->FramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
	GL_TEXTURE_2D, fake_texture, 0);

	/* attach the depth render buffer to the FBO */
	gl->FramebufferRenderbuffer (GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT,
	GL_RENDERBUFFER, *depth);

	if (gst_gl_context_get_gl_api (frame->context) & GST_GL_API_OPENGL) {
	gl->FramebufferRenderbuffer (GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT,
	GL_RENDERBUFFER, *depth);
	}

	if (gl->CheckFramebufferStatus (GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
	gst_gl_context_set_error (frame->context,
	"GL framebuffer status incomplete");

	gl->DeleteTextures (1, &fake_texture);

	return FALSE;
	}

	/* unbind the FBO */
	gl->BindFramebuffer (GL_FRAMEBUFFER, 0);

	gl->DeleteTextures (1, &fake_texture);

	return TRUE;
	}

	gboolean
	gst_gl_framebuffer_use (GstGLFramebuffer * frame, gint texture_fbo_width,
	gint texture_fbo_height, GLuint fbo, GLuint depth_buffer,
	GLuint texture_fbo, GLCB cb, gint input_tex_width,
	gint input_tex_height, GLuint input_tex, gdouble proj_param1,
	gdouble proj_param2, gdouble proj_param3, gdouble proj_param4,
	GstGLDisplayProjection projection, gpointer stuff)
	{
	const GstGLFuncs *gl;
	#if GST_GL_HAVE_GLES2
	GLint viewport_dim[4];
	#endif

	g_return_val_if_fail (GST_IS_GL_FRAMEBUFFER (frame), FALSE);
	g_return_val_if_fail (input_tex_width > 0 && input_tex_height > 0, FALSE);
	g_return_val_if_fail (texture_fbo_width > 0 && texture_fbo_height > 0, FALSE);
	g_return_val_if_fail (input_tex != 0, FALSE);
	g_return_val_if_fail (fbo != 0, FALSE);
	g_return_val_if_fail (texture_fbo != 0, FALSE);
	g_return_val_if_fail (cb != NULL, FALSE);

	gl = frame->context->gl_vtable;

	GST_TRACE ("Binding v1 FBO %u dimensions:%ux%u with texture:%u "
	"dimensions:%ux%u", fbo, texture_fbo_width,
	texture_fbo_height, texture_fbo, input_tex_width, input_tex_height);

	gl->BindFramebuffer (GL_FRAMEBUFFER, fbo);

	/setup a texture to render to /
	gl->BindTexture (GL_TEXTURE_2D, texture_fbo);

	/* attach the texture to the FBO to renderer to */
	gl->FramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
	GL_TEXTURE_2D, texture_fbo, 0);

	gst_gl_context_clear_shader (frame->context);

	#if GST_GL_HAVE_OPENGL
	if (gst_gl_context_get_gl_api (frame->context) & GST_GL_API_OPENGL) {
	gl->PushAttrib (GL_VIEWPORT_BIT);
	gl->MatrixMode (GL_PROJECTION);
	gl->PushMatrix ();
	gl->LoadIdentity ();

	switch (projection) {
	case GST_GL_DISPLAY_PROJECTION_ORTHO2D:
	gluOrtho2D (proj_param1, proj_param2, proj_param3, proj_param4);
	break;
	case GST_GL_DISPLAY_PROJECTION_PERSPECTIVE:
	gluPerspective (proj_param1, proj_param2, proj_param3, proj_param4);
	break;
	default:
	gst_gl_context_set_error (frame->context, "Unknow fbo projection %d",
	projection);
	}

	gl->MatrixMode (GL_MODELVIEW);
	gl->PushMatrix ();
	gl->LoadIdentity ();
	}
	#endif
	#if GST_GL_HAVE_GLES2
	if (gst_gl_context_get_gl_api (frame->context) & GST_GL_API_GLES2)
	gl->GetIntegerv (GL_VIEWPORT, viewport_dim);
	#endif

	gl->Viewport (0, 0, texture_fbo_width, texture_fbo_height);

	#if GST_GL_HAVE_OPENGL
	if (gst_gl_context_get_gl_api (frame->context) & GST_GL_API_OPENGL) {
	const GLenum rt[] = { GL_COLOR_ATTACHMENT0 };
	gl->DrawBuffers (1, rt);
	}
	#endif

	gl->ClearColor (0.0, 0.0, 0.0, 0.0);
	gl->Clear (GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);

	cb (input_tex_width, input_tex_height, input_tex, stuff);

	#if GST_GL_HAVE_OPENGL
	if (gst_gl_context_get_gl_api (frame->context) & GST_GL_API_OPENGL) {
	const GLenum rt[] = { GL_NONE };
	gl->DrawBuffers (1, rt);
	gl->MatrixMode (GL_PROJECTION);
	gl->PopMatrix ();
	gl->MatrixMode (GL_MODELVIEW);
	gl->PopMatrix ();
	gl->PopAttrib ();
	}
	#endif
	#if GST_GL_HAVE_GLES2
	if (gst_gl_context_get_gl_api (frame->context) & GST_GL_API_GLES2) {
	gl->Viewport (viewport_dim[0], viewport_dim[1], viewport_dim[2],
	viewport_dim[3]);
	}
	#endif

	gl->BindFramebuffer (GL_FRAMEBUFFER, 0);

	return TRUE;
	}

	gboolean
	gst_gl_framebuffer_use_v2 (GstGLFramebuffer * frame, gint texture_fbo_width,
	gint texture_fbo_height, GLuint fbo, GLuint depth_buffer,
	GLuint texture_fbo, GLCB_V2 cb, gpointer stuff)
	{
	const GstGLFuncs *gl;
	GLint viewport_dim[4];

	g_return_val_if_fail (GST_IS_GL_FRAMEBUFFER (frame), FALSE);
	g_return_val_if_fail (texture_fbo_width > 0 && texture_fbo_height > 0, FALSE);
	g_return_val_if_fail (fbo != 0, FALSE);
	g_return_val_if_fail (texture_fbo != 0, FALSE);
	g_return_val_if_fail (cb != NULL, FALSE);

	gl = frame->context->gl_vtable;

	GST_TRACE ("Binding v2 FBO %u dimensions:%ux%u with texture:%u ",
	fbo, texture_fbo_width, texture_fbo_height, texture_fbo);

	gl->BindFramebuffer (GL_FRAMEBUFFER, fbo);

	/* setup a texture to render to */
	gl->BindTexture (GL_TEXTURE_2D, texture_fbo);

	/* attach the texture to the FBO to renderer to */
	gl->FramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
	GL_TEXTURE_2D, texture_fbo, 0);

	gl->GetIntegerv (GL_VIEWPORT, viewport_dim);

	gl->Viewport (0, 0, texture_fbo_width, texture_fbo_height);

	if (gst_gl_context_get_gl_api (frame->context) & GST_GL_API_OPENGL)
	gl->DrawBuffer (GL_COLOR_ATTACHMENT0);

	gl->ClearColor (0.0, 0.0, 0.0, 0.0);
	gl->Clear (GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);

	/* the opengl scene */
	cb (stuff);

	if (gst_gl_context_get_gl_api (frame->context) & GST_GL_API_OPENGL)
	gl->DrawBuffer (GL_NONE);

	gl->Viewport (viewport_dim[0], viewport_dim[1],
	viewport_dim[2], viewport_dim[3]);

	gl->BindFramebuffer (GL_FRAMEBUFFER, 0);

	return TRUE;
	}

	void
	gst_gl_framebuffer_delete (GstGLFramebuffer * frame, guint fbo, guint depth)
	{
	const GstGLFuncs *gl;

	g_return_if_fail (GST_IS_GL_FRAMEBUFFER (frame));

	gl = frame->context->gl_vtable;

	GST_TRACE ("Deleting FBO %u", fbo);

	if (fbo) {
	gl->DeleteFramebuffers (1, &fbo);
	}
	if (depth) {
	gl->DeleteRenderbuffers (1, &depth);
	}
	}