[Plib-cvs] plib/src/ssgAux ssgaScreenDump.cxx,1.2,1.3 ssgaScreenDump.h,1.1,1.2

[Steve B. <sj...@us...>]

Update of /cvsroot/plib/plib/src/ssgAux
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv20530/plib/src/ssgAux

Modified Files:
	ssgaScreenDump.cxx ssgaScreenDump.h 
Log Message:
Added the 'PW' library.  Added some functionality to the ssgAux screen dump
facility so you can dump to an array in memory as an alternative to dumping
it straight to disk.


Index: ssgaScreenDump.cxx
===================================================================
RCS file: /cvsroot/plib/plib/src/ssgAux/ssgaScreenDump.cxx,v
retrieving revision 1.2
retrieving revision 1.3
diff -u -d -r1.2 -r1.3
--- ssgaScreenDump.cxx	4 Jul 2003 13:50:56 -0000	1.2
+++ ssgaScreenDump.cxx	16 Feb 2004 02:26:28 -0000	1.3
@@ -48,7 +48,7 @@
 }
 
 
-void ssgaScreenDump ( char *filename, int xsize, int ysize )
+void ssgaScreenDump ( char *filename, int xsize, int ysize, int frontBuffer )
 {
   FILE *fd = fopen ( filename, "wb" ) ;
 
@@ -59,13 +59,8 @@
     return ;
   }
 
-  unsigned char *buffer = new unsigned char [ xsize * ysize * 3 ] ;
   unsigned char *row    = new unsigned char [ xsize ] ;
-
-  glReadBuffer ( GL_FRONT ) ;
-  glReadPixels( 0, 0, xsize, ysize, GL_RGB, GL_UNSIGNED_BYTE,
-                                                       (void *) buffer ) ;
-  glReadBuffer ( GL_BACK ) ;
+  unsigned char *buffer = ssgaScreenDump ( xsize, ysize, frontBuffer ) ;
 
   char  type  =   0 /* RGB_IMG_VERBATIM */ ;
   short dim   =   3 ;
@@ -113,3 +108,19 @@
 }
 
 
+unsigned char *ssgaScreenDump ( int xsize, int ysize, int frontBuffer )
+{
+  unsigned char *buffer = new unsigned char [ xsize * ysize * 3 ] ;
+
+  if ( frontBuffer )
+    glReadBuffer ( GL_FRONT ) ;
+
+  glReadPixels( 0, 0, xsize, ysize, GL_RGB, GL_UNSIGNED_BYTE,
+                                                       (void *) buffer ) ;
+  if ( frontBuffer )
+    glReadBuffer ( GL_BACK ) ;
+
+  return buffer ;
+}
+
+

Index: ssgaScreenDump.h
===================================================================
RCS file: /cvsroot/plib/plib/src/ssgAux/ssgaScreenDump.h,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -d -r1.1 -r1.2
--- ssgaScreenDump.h	27 Jun 2003 08:15:15 -0000	1.1
+++ ssgaScreenDump.h	16 Feb 2004 02:26:28 -0000	1.2
@@ -1,3 +1,14 @@
 
-void ssgaScreenDump ( char *filename, int width, int height ) ;
+/* Dump to disk in '.rgb' format */
+
+void ssgaScreenDump ( char *filename,
+                      int width, int height,
+                      int frontBuffer = TRUE ) ;
+
+/* Dump to a memory buffer - three bytes per pixel */
+
+unsigned char *ssgaScreenDump ( int width, int height,
+                                int frontBuffer = TRUE ) ;
+
+