Initial revision

1 files changed, 405 insertions, 0 deletions

diff --git a/src/mesa/drivers/x11/glxapi.c b/src/mesa/drivers/x11/glxapi.c
new file mode 100644
index 0000000000..b65bada72b
--- /dev/null
+++ b/src/mesa/drivers/x11/glxapi.c
@@ -0,0 +1,405 @@
+/* $Id: glxapi.c,v 1.1 1999/08/19 00:55:42 jtg Exp $ */
+
+/*
+ * Mesa 3-D graphics library
+ * Version:  3.1
+ * 
+ * Copyright (C) 1999  Brian Paul   All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+
+
+
+/*
+ * GLX API functions which either call fake or real GLX implementations
+ *
+ * To enable real GLX encoding the REALGLX preprocessor symbol should be
+ * defined on the command line.
+ */
+
+
+
+#ifdef HAVE_CONFIG_H
+#include "conf.h"
+#endif
+
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include "GL/glx.h"
+#include "fakeglx.h"
+#include "realglx.h"
+
+
+#ifdef REALGLX
+static Display *CurrentDisplay = NULL;
+#endif
+
+
+/*
+ * This functions determines whether a call to a glX*() function should
+ * be routed to the "fake" (Mesa) or "real" (GLX-encoder) functions.
+ * Input:  dpy - the X display.
+ * Return:   GL_TRUE if the given display supports the real GLX extension,
+ *           GL_FALSE otherwise.
+ */
+static GLboolean display_has_glx( Display *dpy )
+{
+   /* TODO: we should use a lookup table to avoid calling XQueryExtension
+    * every time.
+    */
+   int ignore;
+   if (XQueryExtension( dpy, "GLX", &ignore, &ignore, &ignore )) {
+      return GL_TRUE;
+   }
+   else {
+      return GL_FALSE;
+   }
+}
+
+
+
+XVisualInfo *glXChooseVisual( Display *dpy, int screen, int *list )
+{
+#ifdef REALGLX
+   if (display_has_glx(dpy))
+      return Real_glXChooseVisual( dpy, screen, list );
+   else
+#endif
+      return Fake_glXChooseVisual( dpy, screen, list );
+}
+
+
+
+int glXGetConfig( Display *dpy, XVisualInfo *visinfo, int attrib, int *value )
+{
+#ifdef REALGLX
+   if (display_has_glx(dpy))
+      return Real_glXGetConfig( dpy, visinfo, attrib, value );
+   else
+#endif
+      return Fake_glXGetConfig( dpy, visinfo, attrib, value );
+}
+
+
+
+GLXContext glXCreateContext( Display *dpy, XVisualInfo *visinfo,
+			     GLXContext shareList, Bool direct )
+{
+#ifdef REALGLX
+   if (display_has_glx(dpy))
+      return Real_glXCreateContext( dpy, visinfo, shareList, direct );
+   else
+#endif
+      return Fake_glXCreateContext( dpy, visinfo, shareList, direct );
+}
+
+
+
+void glXDestroyContext( Display *dpy, GLXContext ctx )
+{
+#ifdef REALGLX
+   if (display_has_glx(dpy))
+      Real_glXDestroyContext( dpy, ctx );
+   else
+#endif
+      Fake_glXDestroyContext( dpy, ctx );
+}
+
+
+
+void glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
+		     GLuint mask )
+{
+#ifdef REALGLX
+   if (display_has_glx(dpy))
+      Real_glXCopyContext( dpy, src, dst, mask );
+   else
+#endif
+      Fake_glXCopyContext( dpy, src, dst, mask );
+}
+
+
+
+Bool glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx )
+{
+#ifdef REALGLX
+   if (display_has_glx(dpy)) {
+      if (Real_glXMakeCurrent( dpy, drawable, ctx )) {
+         CurrentDisplay = dpy;
+         return True;
+      }
+      else {
+         return False;
+      }
+   }
+   else {
+      if (Fake_glXMakeCurrent( dpy, drawable, ctx )) {
+         CurrentDisplay = dpy;
+         return True;
+      }
+      else {
+         return False;
+      }
+   }
+#else
+   return Fake_glXMakeCurrent( dpy, drawable, ctx );
+#endif
+}
+
+
+
+GLXContext glXGetCurrentContext( void )
+{
+#ifdef REALGLX
+   if (display_has_glx(CurrentDisplay))
+      return Real_glXGetCurrentContext();
+   else
+#endif
+      return Fake_glXGetCurrentContext();
+}
+
+
+
+GLXDrawable glXGetCurrentDrawable( void )
+{
+#ifdef REALGLX
+   if (display_has_glx(CurrentDisplay))
+      return Real_glXGetCurrentDrawable();
+   else
+#endif
+      return Fake_glXGetCurrentDrawable();
+}
+
+
+
+GLXPixmap glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo,
+                              Pixmap pixmap )
+{
+#ifdef REALGLX
+   if (display_has_glx(dpy))
+      return Real_glXCreateGLXPixmap( dpy, visinfo, pixmap );
+   else
+#endif
+      return Fake_glXCreateGLXPixmap( dpy, visinfo, pixmap );
+}
+
+
+void glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap )
+{
+#ifdef REALGLX
+   if (display_has_glx(dpy))
+      Real_glXDestroyGLXPixmap( dpy, pixmap );
+   else
+#endif
+      Fake_glXDestroyGLXPixmap( dpy, pixmap );
+}
+
+
+
+Bool glXQueryExtension( Display *dpy, int *errorb, int *event )
+{
+#ifdef REALGLX
+   if (display_has_glx(dpy))
+      return Real_glXQueryExtension( dpy, errorb, event );
+   else
+#endif
+      return Fake_glXQueryExtension( dpy, errorb, event );
+}
+
+
+
+Bool glXIsDirect( Display *dpy, GLXContext ctx )
+{
+#ifdef REALGLX
+   if (display_has_glx(dpy))
+      return Real_glXIsDirect( dpy, ctx );
+   else
+#endif
+      return Fake_glXIsDirect( dpy, ctx );
+}
+
+
+
+void glXSwapBuffers( Display *dpy, GLXDrawable drawable )
+{
+#ifdef REALGLX
+   if (display_has_glx(dpy))
+      Real_glXSwapBuffers( dpy, drawable );
+   else
+#endif
+      Fake_glXSwapBuffers( dpy, drawable );
+}
+
+
+
+void glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
+                           int x, int y, int width, int height )
+{
+#ifdef REALGLX
+   /* can't implement! */
+   return;
+#endif
+   Fake_glXCopySubBufferMESA( dpy, drawable, x, y, width, height );
+}
+
+
+
+Bool glXQueryVersion( Display *dpy, int *maj, int *min )
+{
+#ifdef REALGLX
+   if (display_has_glx(dpy))
+      return Real_glXQueryVersion( dpy, maj, min );
+   else
+#endif
+      return Fake_glXQueryVersion( dpy, maj, min );
+}
+
+
+
+void glXUseXFont( Font font, int first, int count, int listBase )
+{
+#ifdef REALGLX
+   if (display_has_glx(CurrentDisplay))
+      Real_glXUseXFont( font, first, count, listBase );
+   else
+#endif
+      Fake_glXUseXFont( font, first, count, listBase );
+}
+
+
+void glXWaitGL( void )
+{
+#ifdef REALGLX
+   if (display_has_glx(CurrentDisplay))
+      Real_glXWaitGL();
+   else
+#endif
+      Fake_glXWaitGL();
+}
+
+
+
+void glXWaitX( void )
+{
+#ifdef REALGLX
+   if (display_has_glx(CurrentDisplay))
+      Real_glXWaitX();
+   else
+#endif
+      Fake_glXWaitX();
+}
+
+
+
+/* GLX 1.1 and later */
+const char *glXQueryExtensionsString( Display *dpy, int screen )
+{
+#ifdef REALGLX
+   if (display_has_glx(dpy))
+      return Real_glXQueryExtensionsString( dpy, screen );
+   else
+#endif
+      return Fake_glXQueryExtensionsString( dpy, screen );
+}
+
+
+
+/* GLX 1.1 and later */
+const char *glXQueryServerString( Display *dpy, int screen, int name )
+{
+#ifdef REALGLX
+   if (display_has_glx(dpy))
+      return Real_glXQueryServerString( dpy, screen, name );
+   else
+#endif
+      return Fake_glXQueryServerString( dpy, screen, name );
+}
+
+
+
+/* GLX 1.1 and later */
+const char *glXGetClientString( Display *dpy, int name )
+{
+#ifdef REALGLX
+   if (display_has_glx(dpy))
+      return Real_glXGetClientString( dpy, name );
+   else
+#endif
+      return Fake_glXGetClientString( dpy, name );
+}
+
+
+
+#ifdef GLX_MESA_release_buffers
+Bool glXReleaseBuffersMESA( Display *dpy, Window w )
+{
+#ifdef REALGLX
+   if (display_has_glx(dpy))
+      return GL_FALSE;
+   else
+#endif
+      return Fake_glXReleaseBuffersMESA( dpy, w );
+}
+#endif
+
+
+#ifdef GLX_MESA_pixmap_colormap
+GLXPixmap glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
+                                  Pixmap pixmap, Colormap cmap )
+{
+#ifdef REALGLX
+   if (display_has_glx(dpy))
+      return 0;
+   else
+#endif
+      return Fake_glXCreateGLXPixmapMESA( dpy, visinfo, pixmap, cmap );
+}
+#endif
+
+
+
+#ifdef GLX_SGI_video_sync
+
+/*
+ * This function doesn't really do anything.  But, at least one
+ * application uses the function so this stub is useful.
+ */
+int glXGetVideoSyncSGI(unsigned int *count)
+{
+   static unsigned int counter = 0;
+   *count = counter++;
+   return 0;
+}
+
+
+/*
+ * Again, this is really just a stub function.
+ */
+int glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
+{
+   static unsigned int counter = 0;
+   while (counter % divisor != remainder)
+      counter++;
+   *count = counter;
+   return 0;
+}
+
+#endif