From 6f8315d8f65066fda4ca9498f5d7beec46729d11 Mon Sep 17 00:00:00 2001
From: Daniel Caujolle-Bert <f1rmb@users.sourceforge.net>
Date: Wed, 23 Jan 2002 23:27:10 +0000
Subject: Change/fix opengl checks, add a glut fallback (GLU).

CVS patchset: 1445
CVS date: 2002/01/23 23:27:10
---
 acconfig.h                       |  3 +++
 configure.in                     | 37 ++++++++++++++++++++++++++-----------
 src/video_out/Makefile.am        |  2 +-
 src/video_out/video_out_opengl.c | 11 +++++++++--
 4 files changed, 39 insertions(+), 14 deletions(-)

diff --git a/acconfig.h b/acconfig.h
index f50b5ced5..03c086399 100644
--- a/acconfig.h
+++ b/acconfig.h
@@ -66,6 +66,9 @@
 /* Define this if you have GLut support available */
 #undef HAVE_GLUT
 
+/* Define this if you have GLU support available */
+#undef HAVE_GLU
+
 /* Define this if you have libXinerama installed */
 #undef HAVE_XINERAMA
 
diff --git a/configure.in b/configure.in
index dc20b4612..6f3c5875f 100644
--- a/configure.in
+++ b/configure.in
@@ -241,21 +241,32 @@ AC_PREREQ_LIBTOOL(1.4.0, xv_lib="libXv.a", xv_lib="libXv.so")
 
 
 dnl
-dnl Check for OpenGL & GLut
+dnl Check for OpenGL & [GLut | GLU]
 dnl
 AC_CHECK_LIB(GL, glBegin,
-             OPENGL_LIBS="-lGL"
-             ac_have_opengl="yes",,
-             -lGL)
+             [ ac_have_opengl="yes"
+               OPENGL_LIBS="-lGL" 
+	       AC_CHECK_LIB(glut, glutInit, dnl check for glut
+	                    [ ac_have_glut="yes"
+                              GLUT_LIBS="-lglut"
+	                      AC_DEFINE(HAVE_GLUT)
+			      AC_DEFINE(HAVE_OPENGL) ],
+	                    [ ac_have_glut="no" dnl fallback, check for GLU
+	                      AC_CHECK_LIB(GLU, gluPerspective,
+		                           [ ac_have_glu="yes"
+                                             GLU_LIBS="-lGLU" 
+		                             AC_DEFINE(HAVE_GLU)
+					     AC_DEFINE(HAVE_OPENGL) ],
+	                                   [ ac_have_glu="no" ], 
+                                           [$X_LIBS $X_PRE_LIBS $OPENGL_LIBS -lGLU $X_EXTRA_LIBS])], 
+	                    [$X_LIBS $X_PRE_LIBS -lglut $X_EXTRA_LIBS])
+             ],
+	     [],
+             [$X_LIBS $X_PRE_LIBS -lGL $X_EXTRA_LIBS])
 AC_SUBST(OPENGL_LIBS)
-AM_CONDITIONAL(HAVE_OPENGL, test x$ac_have_opengl = "xyes")
-
-AC_CHECK_LIB(glut, glutInit,
-             GLUT_LIBS="-lglut"
-             ac_have_glut="yes",,
-             -lglut)
 AC_SUBST(GLUT_LIBS)
-AM_CONDITIONAL(HAVE_GLUT, test x$ac_have_glut = "xyes")
+AC_SUBST(GLU_LIBS)
+AM_CONDITIONAL(HAVE_OPENGL, [ test x$ac_have_opengl = "xyes" -a x$ac_have_glut="xyes" -o x$ac_have_opengl = "xyes" -a x$ac_have_glu="xyes" ] )
 
 
 
@@ -922,6 +933,10 @@ if test x"$no_x" != "xyes"; then
       echo "   - Xv (XVideo *shared*)"
     fi
   fi
+  if test x$ac_have_opengl = "xyes" -a x$ac_have_glut="xyes" -o \
+	  x$ac_have_opengl = "xyes" -a x$ac_have_glu="xyes"; then	
+    echo "   - OpenGL"
+  fi
 fi
 if test x$no_aalib != "xyes"; then
   echo "   - aa (Ascii ART)"
diff --git a/src/video_out/Makefile.am b/src/video_out/Makefile.am
index b8ae2c2f3..7b45d752c 100644
--- a/src/video_out/Makefile.am
+++ b/src/video_out/Makefile.am
@@ -49,7 +49,7 @@ xineplug_vo_out_xshm_la_LDFLAGS = -avoid-version -module
 
 xineplug_vo_out_opengl_la_SOURCES = yuv2rgb.c yuv2rgb_mmx.c yuv2rgb_mlib.c \
 	alphablend.c video_out_opengl.c
-xineplug_vo_out_opengl_la_LIBADD =  $(OPENGL_LIBS) $(GLUT_LIBS) $(X_LIBS)
+xineplug_vo_out_opengl_la_LIBADD =  $(OPENGL_LIBS) $(GLUT_LIBS) $(GLU_LIBS) $(X_LIBS)
 xineplug_vo_out_opengl_la_LDFLAGS = -avoid-version -module
 
 xineplug_vo_out_syncfb_la_SOURCES = alphablend.c video_out_syncfb.c 
diff --git a/src/video_out/video_out_opengl.c b/src/video_out/video_out_opengl.c
index 74bc39775..8a2993de9 100644
--- a/src/video_out/video_out_opengl.c
+++ b/src/video_out/video_out_opengl.c
@@ -17,7 +17,7 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
  *
- * $Id: video_out_opengl.c,v 1.3 2002/01/23 15:05:46 richwareham Exp $
+ * $Id: video_out_opengl.c,v 1.4 2002/01/23 23:27:10 f1rmb Exp $
  * 
  * video_out_glut.c, glut based OpenGL rendering interface for xine
  * Matthias Hopf <mat@mshopf.de>
@@ -71,7 +71,13 @@
 
 #include <GL/gl.h>
 #include <GL/glx.h>
+#ifdef HAVE_GLUT
 #include <GL/glut.h>
+#else
+#ifdef HAVE_GLU
+#include <GL/glu.h>
+#endif
+#endif
 
 #include <sys/ipc.h>
 #include <sys/shm.h>
@@ -664,6 +670,7 @@ static void opengl_render_image (opengl_driver_t *this, opengl_frame_t *frame,
 		    (GLfloat)(this->window_width)/
 		    (GLfloat)(this->window_height),
 		    1.0f, 1000.0f);
+
     glMatrixMode (GL_MODELVIEW);
     glLoadIdentity ();	
 	
@@ -937,7 +944,7 @@ static int opengl_gui_data_exchange (vo_driver_t *this_gen,
 
   switch (data_type) {
   case GUI_SELECT_VISUAL:
-/*fprintf (stderr, "*** gui_select_visual ***\n"); */
+fprintf (stderr, "*** gui_select_visual ***\n");
     XLockDisplay (this->display);
     this->vinfo = glXChooseVisual (this->display, this->screen, glxAttrib);
     XUnlockDisplay (this->display);
-- 
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