Merge CV, ver=5.1; ops/methods from HV, and interface from CV where possible

[goodguy/history.git] / cinelerra-5.1 / guicast / bcpbuffer.C

diff --git a/cinelerra-5.1/guicast/bcpbuffer.C b/cinelerra-5.1/guicast/bcpbuffer.C
new file mode 100644 (file)
index 0000000..7249d83
--- /dev/null
+++ b/cinelerra-5.1/guicast/bcpbuffer.C
@@ -0,0 +1,117 @@
+
+/*
+ * CINELERRA
+ * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
+ * 
+ * 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 of the License, 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * 
+ */
+
+#include "bcpbuffer.h"
+#include "bcresources.h"
+#include "bcsignals.h"
+#include "bcsynchronous.h"
+#include "bcwindowbase.h"
+
+
+
+
+BC_PBuffer::BC_PBuffer(int w, int h)
+{
+       reset();
+       this->w = w;
+       this->h = h;
+       create_pbuffer(w, h);
+}
+
+BC_PBuffer::~BC_PBuffer()
+{
+#ifdef HAVE_GL
+       BC_WindowBase::get_synchronous()->release_pbuffer(window_id, pbuffer);
+#endif
+}
+
+
+void BC_PBuffer::reset()
+{
+#ifdef HAVE_GL
+       pbuffer = 0;
+       window_id = -1;
+#endif
+}
+
+#ifdef HAVE_GL
+
+GLXPbuffer BC_PBuffer::get_pbuffer()
+{
+       return pbuffer;
+}
+#endif
+
+
+void BC_PBuffer::create_pbuffer(int w, int h)
+{
+#ifdef HAVE_GL
+       int ww = (w + 3) & ~3, hh = (h + 3) & ~3;
+       int pb_attrs[] = {
+               GLX_PBUFFER_WIDTH, ww,
+               GLX_PBUFFER_HEIGHT, hh,
+               GLX_LARGEST_PBUFFER, False,
+               GLX_PRESERVED_CONTENTS, True,
+               None
+       };
+
+       BC_WindowBase *current_window = BC_WindowBase::get_synchronous()->current_window;
+       Display *dpy = current_window->get_display();
+       GLXFBConfig *fb_cfgs = current_window->glx_pbuffer_fb_configs();
+       int nfb_cfgs = current_window->n_fbcfgs_pbuffer;
+       XVisualInfo *visinfo = 0;
+
+       for( int i=0; !pbuffer && i<nfb_cfgs; ++i ) {
+               if( visinfo ) { XFree(visinfo);  visinfo = 0; }
+               BC_Resources::error = 0;
+                visinfo = glXGetVisualFromFBConfig(dpy, fb_cfgs[i]);
+               if( !visinfo || BC_Resources::error ) continue;
+               pbuffer = glXCreatePbuffer(dpy, fb_cfgs[i], pb_attrs);
+               if( BC_Resources::error ) pbuffer = 0;
+       }
+
+// printf("BC_PBuffer::create_pbuffer %d current_config=%d visinfo=%p error=%d pbuffer=%p\n",
+// __LINE__, current_config, visinfo, BC_Resources::error, pbuffer);
+
+       if( pbuffer ) {
+               window_id = current_window->get_id();
+               glx_context = glXCreateContext(dpy, visinfo, current_window->glx_win_context, 1);
+               BC_WindowBase::get_synchronous()->put_pbuffer(w, h, pbuffer, glx_context);
+       }
+       else
+               printf("BC_PBuffer::create_pbuffer: failed\n");
+
+       if( visinfo ) XFree(visinfo);
+#endif
+}
+
+
+int bcgl_enable_ret; // debug
+
+void BC_PBuffer::enable_opengl()
+{
+#ifdef HAVE_GL
+       BC_WindowBase *current_window = BC_WindowBase::get_synchronous()->current_window;
+       bcgl_enable_ret = current_window->glx_make_current(pbuffer);
+       BC_WindowBase::get_synchronous()->is_pbuffer = 1;
+#endif
+}
+