Aux color buffer support. Pass one of GLUT_AUX[1234] to glutInitDisplayMode.

[freeglut] / src / freeglut_window.c

diff --git a/src/freeglut_window.c b/src/freeglut_window.c
index fd8303d..a032ab4 100644 (file)
--- a/src/freeglut_window.c
+++ b/src/freeglut_window.c
@@ -25,10 +25,6 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
 #include <GL/freeglut.h>
 #include "freeglut_internal.h"
 
@@ -131,6 +127,16 @@ XVisualInfo* fgChooseVisual( void )
             ATTRIB_VAL( GLX_ACCUM_ALPHA_SIZE, 1 );
     }
 
+    if( fgState.DisplayMode & GLUT_AUX1 )
+        ATTRIB_VAL( GLX_AUX_BUFFERS, 1 );
+    if( fgState.DisplayMode & GLUT_AUX2 )
+        ATTRIB_VAL( GLX_AUX_BUFFERS, 2 );
+    if( fgState.DisplayMode & GLUT_AUX3 )
+        ATTRIB_VAL( GLX_AUX_BUFFERS, 3 );
+    if( fgState.DisplayMode & GLUT_AUX4 )
+        ATTRIB_VAL( GLX_AUX_BUFFERS, 4 );
+
+
     /* Push a null at the end of the list */
     ATTRIB( None );
 
@@ -274,24 +280,16 @@ void fgOpenWindow( SFG_Window* window, const char* title,
     XSizeHints sizeHints;
     XWMHints wmHints;
     unsigned long mask;
+    unsigned int current_DisplayMode = fgState.DisplayMode ;
 
-    /*
-     * XXX fgChooseVisual() is a common part of all three.
-     * XXX With a little thought, we should be able to greatly
-     * XXX simplify this.
-     */
-    if( !window->IsMenu )
-        window->Window.VisualInfo = fgChooseVisual( );
-    else if( fgStructure.MenuContext )
-        window->Window.VisualInfo = fgChooseVisual( );
-    else
-    {
-        /* XXX Why are menus double- and depth-buffered? */
-        unsigned int current_DisplayMode = fgState.DisplayMode ;
-        fgState.DisplayMode = GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH ;
-        window->Window.VisualInfo = fgChooseVisual( );
+    /* Save the display mode if we are creating a menu window */
+    if( window->IsMenu && ( ! fgStructure.MenuContext ) )
+        fgState.DisplayMode = GLUT_DOUBLE | GLUT_RGB ;
+
+    window->Window.VisualInfo = fgChooseVisual( );
+
+    if( window->IsMenu && ( ! fgStructure.MenuContext ) )
         fgState.DisplayMode = current_DisplayMode ;
-    }
 
     if( ! window->Window.VisualInfo )
     {
@@ -314,7 +312,7 @@ void fgOpenWindow( SFG_Window* window, const char* title,
     }
 
     FREEGLUT_INTERNAL_ERROR_EXIT( window->Window.VisualInfo != NULL,
-                                  "Unable to get window visual info", "fgOpenWindow" );
+                                  "Visual with necessary capabilities not found", "fgOpenWindow" );
 
     /*
      * XXX HINT: the masks should be updated when adding/removing callbacks.
@@ -328,7 +326,7 @@ void fgOpenWindow( SFG_Window* window, const char* title,
      */
     winAttr.event_mask        =
         StructureNotifyMask | SubstructureNotifyMask | ExposureMask |
-        ButtonPressMask | ButtonReleaseMask | KeyPressMask | KeyRelease |
+        ButtonPressMask | ButtonReleaseMask | KeyPressMask | KeyReleaseMask |
         VisibilityChangeMask | EnterWindowMask | LeaveWindowMask |
         PointerMotionMask | ButtonMotionMask;
     winAttr.background_pixmap = None;
@@ -413,12 +411,6 @@ void fgOpenWindow( SFG_Window* window, const char* title,
     }
 #endif
 
-    glXMakeCurrent(
-        fgDisplay.Display,
-        window->Window.Handle,
-        window->Window.Context
-    );
-
     /*
      * XXX Assume the new window is visible by default
      * XXX Is this a  safe assumption?
@@ -439,17 +431,10 @@ void fgOpenWindow( SFG_Window* window, const char* title,
      * that they should replace a window manager that they like, and which
      * works, just because *we* think that it's not "modern" enough.
      */
-#if TARGET_HOST_WINCE /* Since this is in the X11 branch, it's pretty dumb */
-    sizeHints.x      = 0;
-    sizeHints.y      = 0;
-    sizeHints.width  = 320;
-    sizeHints.height = 240;
-#else
     sizeHints.x      = x;
     sizeHints.y      = y;
     sizeHints.width  = w;
     sizeHints.height = h;
-#endif /* TARGET_HOST_WINCE */
 
     wmHints.flags = StateHint;
     wmHints.initial_state = fgState.ForceIconic ? IconicState : NormalState;
@@ -471,6 +456,12 @@ void fgOpenWindow( SFG_Window* window, const char* title,
     XSetWMProtocols( fgDisplay.Display, window->Window.Handle,
                      &fgDisplay.DeleteWindow, 1 );
 
+    glXMakeCurrent(
+        fgDisplay.Display,
+        window->Window.Handle,
+        window->Window.Context
+    );
+
     XMapWindow( fgDisplay.Display, window->Window.Handle );
 
 #elif TARGET_HOST_WIN32 || TARGET_HOST_WINCE