/* * (c) Copyright 1993, Silicon Graphics, Inc. * ALL RIGHTS RESERVED * Permission to use, copy, modify, and distribute this software for * any purpose and without fee is hereby granted, provided that the above * copyright notice appear in all copies and that both the copyright notice * and this permission notice appear in supporting documentation, and that * the name of Silicon Graphics, Inc. not be used in advertising * or publicity pertaining to distribution of the software without specific, * written prior permission. * * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS" * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE, * INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR * FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON * GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT, * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION, * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE. * * * US Government Users Restricted Rights * Use, duplication, or disclosure by the Government is subject to * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph * (c)(1)(ii) of the Rights in Technical Data and Computer Software * clause at DFARS 252.227-7013 and/or in similar or successor * clauses in the FAR or the DOD or NASA FAR Supplement. * Unpublished-- rights reserved under the copyright laws of the * United States. Contractor/manufacturer is Silicon Graphics, * Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311. * * OpenGL(TM) is a trademark of Silicon Graphics, Inc. */ /* * * This file has been slightly modified from the original for use with Mesa * * Jeroen van der Zijp * * jvz@cyberia.cfdrc.com * */ #include #include #include #include #ifdef __GLX_MOTIF #include #include "GLwMDrawAP.h" #else #include "GLwDrawAP.h" #endif #include #include #ifdef __GLX_MOTIF #define GLwDrawingAreaWidget GLwMDrawingAreaWidget #define GLwDrawingAreaClassRec GLwMDrawingAreaClassRec #define glwDrawingAreaClassRec glwMDrawingAreaClassRec #define glwDrawingAreaWidgetClass glwMDrawingAreaWidgetClass #define GLwDrawingAreaRec GLwMDrawingAreaRec #endif #define ATTRIBLIST_SIZE 32 #define offset(field) XtOffset(GLwDrawingAreaWidget,glwDrawingArea.field) /* forward definitions */ static void createColormap(GLwDrawingAreaWidget w,int offset,XrmValue *value); static void Initialize(GLwDrawingAreaWidget req,GLwDrawingAreaWidget neww,ArgList args,Cardinal *num_args); static void Realize(Widget w,Mask *valueMask,XSetWindowAttributes *attributes); static void Redraw(GLwDrawingAreaWidget w,XEvent *event,Region region); static void Resize(GLwDrawingAreaWidget glw); static void Destroy(GLwDrawingAreaWidget glw); static void glwInput(GLwDrawingAreaWidget glw,XEvent *event,String *params,Cardinal *numParams); static char defaultTranslations[] = #ifdef __GLX_MOTIF "osfHelp:PrimitiveHelp() \n" #endif ": glwInput() \n\ : glwInput() \n\ : glwInput() \n\ : glwInput() \n\ : glwInput() "; static XtActionsRec actions[] = { {"glwInput",(XtActionProc)glwInput}, /* key or mouse input */ }; /* * There is a bit of unusual handling of the resources here. * Because Xt insists on allocating the colormap resource when it is * processing the core resources (even if we redeclare the colormap * resource here, we need to do a little trick. When Xt first allocates * the colormap, we allow it to allocate the default one, since we have * not yet determined the appropriate visual (which is determined from * resources parsed after the colormap). We also let it allocate colors * in that default colormap. * * In the initialize proc we calculate the actual visual. Then, we * reobtain the colormap resource using XtGetApplicationResources in * the initialize proc. If requested, we also reallocate colors in * that colormap using the same method. */ static XtResource resources[] = { /* The GLX attributes. Add any new attributes here */ {GLwNbufferSize, GLwCBufferSize, XtRInt, sizeof (int), offset(bufferSize), XtRImmediate, (XtPointer) 0}, {GLwNlevel, GLwCLevel, XtRInt, sizeof (int), offset(level), XtRImmediate, (XtPointer) 0}, {GLwNrgba, GLwCRgba, XtRBoolean, sizeof (Boolean), offset(rgba), XtRImmediate, (XtPointer) FALSE}, {GLwNdoublebuffer, GLwCDoublebuffer, XtRBoolean, sizeof (Boolean), offset(doublebuffer), XtRImmediate, (XtPointer) FALSE}, {GLwNstereo, GLwCStereo, XtRBoolean, sizeof (Boolean), offset(stereo), XtRImmediate, (XtPointer) FALSE}, {GLwNauxBuffers, GLwCAuxBuffers, XtRInt, sizeof (int), offset(auxBuffers), XtRImmediate, (XtPointer) 0}, {GLwNredSize, GLwCColorSize, XtRInt, sizeof (int), offset(redSize), XtRImmediate, (XtPointer) 1}, {GLwNgreenSize, GLwCColorSize, XtRInt, sizeof (int), offset(greenSize), XtRImmediate, (XtPointer) 1}, {GLwNblueSize, GLwCColorSize, XtRInt, sizeof (int), offset(blueSize), XtRImmediate, (XtPointer) 1}, {GLwNalphaSize, GLwCAlphaSize, XtRInt, sizeof (int), offset(alphaSize), XtRImmediate, (XtPointer) 0}, {GLwNdepthSize, GLwCDepthSize, XtRInt, sizeof (int), offset(depthSize), XtRImmediate, (XtPointer) 0}, {GLwNstencilSize, GLwCStencilSize, XtRInt, sizeof (int), offset(stencilSize), XtRImmediate, (XtPointer) 0}, {GLwNaccumRedSize, GLwCAccumColorSize, XtRInt, sizeof (int), offset(accumRedSize), XtRImmediate, (XtPointer) 0}, {GLwNaccumGreenSize, GLwCAccumColorSize, XtRInt, sizeof (int), offset(accumGreenSize), XtRImmediate, (XtPointer) 0}, {GLwNaccumBlueSize, GLwCAccumColorSize, XtRInt, sizeof (int), offset(accumBlueSize), XtRImmediate, (XtPointer) 0}, {GLwNaccumAlphaSize, GLwCAccumAlphaSize, XtRInt, sizeof (int), offset(accumAlphaSize), XtRImmediate, (XtPointer) 0}, /* the attribute list */ {GLwNattribList, GLwCAttribList, XtRPointer, sizeof(int *), offset(attribList), XtRImmediate, (XtPointer) NULL}, /* the visual info */ {GLwNvisualInfo, GLwCVisualInfo, GLwRVisualInfo, sizeof (XVisualInfo *), offset(visualInfo), XtRImmediate, (XtPointer) NULL}, /* miscellaneous resources */ {GLwNinstallColormap, GLwCInstallColormap, XtRBoolean, sizeof (Boolean), offset(installColormap), XtRImmediate, (XtPointer) TRUE}, {GLwNallocateBackground, GLwCAllocateColors, XtRBoolean, sizeof (Boolean), offset(allocateBackground), XtRImmediate, (XtPointer) FALSE}, {GLwNallocateOtherColors, GLwCAllocateColors, XtRBoolean, sizeof (Boolean), offset(allocateOtherColors), XtRImmediate, (XtPointer) FALSE}, {GLwNinstallBackground, GLwCInstallBackground, XtRBoolean, sizeof (Boolean), offset(installBackground), XtRImmediate, (XtPointer) TRUE}, {GLwNginitCallback, GLwCCallback, XtRCallback, sizeof (XtCallbackList), offset(ginitCallback), XtRImmediate, (XtPointer) NULL}, {GLwNinputCallback, GLwCCallback, XtRCallback, sizeof (XtCallbackList), offset(inputCallback), XtRImmediate, (XtPointer) NULL}, {GLwNresizeCallback, GLwCCallback, XtRCallback, sizeof (XtCallbackList), offset(resizeCallback), XtRImmediate, (XtPointer) NULL}, {GLwNexposeCallback, GLwCCallback, XtRCallback, sizeof (XtCallbackList), offset(exposeCallback), XtRImmediate, (XtPointer) NULL}, /* Changes to Motif primitive resources */ #ifdef __GLX_MOTIF {XmNtraversalOn, XmCTraversalOn, XmRBoolean, sizeof (Boolean), XtOffset (GLwDrawingAreaWidget, primitive.traversal_on), XmRImmediate, (XtPointer)FALSE}, /* highlighting is normally disabled, as when Motif tries to disable * highlighting, it tries to reset the color back to the parent's * background (usually Motif blue). Unfortunately, that is in a * different colormap, and doesn't work too well. */ {XmNhighlightOnEnter, XmCHighlightOnEnter, XmRBoolean, sizeof (Boolean), XtOffset (GLwDrawingAreaWidget, primitive.highlight_on_enter), XmRImmediate, (XtPointer) FALSE}, {XmNhighlightThickness, XmCHighlightThickness, XmRHorizontalDimension, sizeof (Dimension), XtOffset (GLwDrawingAreaWidget, primitive.highlight_thickness), XmRImmediate, (XtPointer) 0}, #endif }; /* ** The following resources are reobtained using XtGetApplicationResources ** in the initialize proc. */ /* The colormap */ static XtResource initializeResources[] = { /* reobtain the colormap with the new visual */ {XtNcolormap, XtCColormap, XtRColormap, sizeof(Colormap), XtOffset(GLwDrawingAreaWidget, core.colormap), XtRCallProc,(XtPointer) createColormap}, }; /* reallocate any colors we need in the new colormap */ /* The background is obtained only if the allocateBackground resource is TRUE*/ static XtResource backgroundResources[] = { #ifdef __GLX_MOTIF {XmNbackground, XmCBackground,XmRPixel, sizeof(Pixel),XtOffset(GLwDrawingAreaWidget,core.background_pixel), XmRString,(XtPointer)"lightgrey"}, /*XmRCallProc,(XtPointer)_XmBackgroundColorDefault},*/ {XmNbackgroundPixmap,XmCPixmap,XmRXmBackgroundPixmap, sizeof(Pixmap),XtOffset(GLwDrawingAreaWidget,core.background_pixmap), XmRImmediate,(XtPointer)XmUNSPECIFIED_PIXMAP}, #else {XtNbackground,XtCBackground,XtRPixel,sizeof(Pixel), XtOffset(GLwDrawingAreaWidget,core.background_pixel), XtRString,(XtPointer)"lightgrey"}, /*XtRString,(XtPointer)"XtDefaultBackground"},*/ {XtNbackgroundPixmap, XtCPixmap, XtRPixmap, sizeof(Pixmap), XtOffset(GLwDrawingAreaWidget,core.background_pixmap), XtRImmediate,(XtPointer)XtUnspecifiedPixmap}, #endif }; /* The other colors such as the foreground are allocated only if * allocateOtherColors are set. These resources only exist in Motif. */ #ifdef __GLX_MOTIF static XtResource otherColorResources[] = { {XmNforeground,XmCForeground,XmRPixel, sizeof(Pixel),XtOffset(GLwDrawingAreaWidget,primitive.foreground), XmRString,(XtPointer)"lighgrey"}, /*XmRCallProc, (XtPointer) _XmForegroundColorDefault},*/ {XmNhighlightColor,XmCHighlightColor,XmRPixel,sizeof(Pixel), XtOffset(GLwDrawingAreaWidget,primitive.highlight_color), XmRString,(XtPointer)"lightgrey"}, /*XmRCallProc,(XtPointer)_XmHighlightColorDefault},*/ {XmNhighlightPixmap,XmCHighlightPixmap,XmRPrimHighlightPixmap, sizeof(Pixmap), XtOffset(GLwDrawingAreaWidget,primitive.highlight_pixmap), XmRImmediate,(XtPointer)XmUNSPECIFIED_PIXMAP}, /*XmRCallProc,(XtPointer)_XmPrimitiveHighlightPixmapDefault},*/ }; #endif #undef offset GLwDrawingAreaClassRec glwDrawingAreaClassRec = { { /* core fields */ #ifdef __GLX_MOTIF /* superclass */ (WidgetClass) &xmPrimitiveClassRec, /* class_name */ "GLwMDrawingArea", #else /* not __GLX_MOTIF */ /* superclass */ (WidgetClass) &widgetClassRec, /* class_name */ "GLwDrawingArea", #endif /* __GLX_MOTIF */ /* widget_size */ sizeof(GLwDrawingAreaRec), /* class_initialize */ NULL, /* class_part_initialize */ NULL, /* class_inited */ FALSE, /* initialize */ (XtInitProc) Initialize, /* initialize_hook */ NULL, /* realize */ Realize, /* actions */ actions, /* num_actions */ XtNumber(actions), /* resources */ resources, /* num_resources */ XtNumber(resources), /* xrm_class */ NULLQUARK, /* compress_motion */ TRUE, /* compress_exposure */ TRUE, /* compress_enterleave */ TRUE, /* visible_interest */ TRUE, /* destroy */ (XtWidgetProc) Destroy, /* resize */ (XtWidgetProc) Resize, /* expose */ (XtExposeProc) Redraw, /* set_values */ NULL, /* set_values_hook */ NULL, /* set_values_almost */ XtInheritSetValuesAlmost, /* get_values_hook */ NULL, /* accept_focus */ NULL, /* version */ XtVersion, /* callback_private */ NULL, /* tm_table */ defaultTranslations, /* query_geometry */ XtInheritQueryGeometry, /* display_accelerator */ XtInheritDisplayAccelerator, /* extension */ NULL }, #ifdef __GLX_MOTIF /* primitive resources */ { /* border_highlight */ XmInheritBorderHighlight, /* border_unhighlight */ XmInheritBorderUnhighlight, /* translations */ XtInheritTranslations, /* arm_and_activate */ NULL, /* get_resources */ NULL, /* num get_resources */ 0, /* extension */ NULL, } #endif }; WidgetClass glwDrawingAreaWidgetClass=(WidgetClass)&glwDrawingAreaClassRec; static void error(Widget w,char* string){ char buf[100]; #ifdef __GLX_MOTIF sprintf(buf,"GLwMDrawingArea: %s\n",string); #else sprintf(buf,"GLwDrawingArea: %s\n",string); #endif XtAppError(XtWidgetToApplicationContext(w),buf); } static void warning(Widget w,char* string){ char buf[100]; #ifdef __GLX_MOTIF sprintf (buf, "GLwMDraw: %s\n", string); #else sprintf (buf, "GLwDraw: %s\n", string); #endif XtAppWarning(XtWidgetToApplicationContext(w), buf); } /* Initialize the attribList based on the attributes */ static void createAttribList(GLwDrawingAreaWidget w){ int *ptr; w->glwDrawingArea.attribList = (int*)XtMalloc(ATTRIBLIST_SIZE*sizeof(int)); if(!w->glwDrawingArea.attribList){ error((Widget)w,"Unable to allocate attribute list"); } ptr = w->glwDrawingArea.attribList; *ptr++ = GLX_BUFFER_SIZE; *ptr++ = w->glwDrawingArea.bufferSize; *ptr++ = GLX_LEVEL; *ptr++ = w->glwDrawingArea.level; if(w->glwDrawingArea.rgba) *ptr++ = GLX_RGBA; if(w->glwDrawingArea.doublebuffer) *ptr++ = GLX_DOUBLEBUFFER; if(w->glwDrawingArea.stereo) *ptr++ = GLX_STEREO; *ptr++ = GLX_AUX_BUFFERS; *ptr++ = w->glwDrawingArea.auxBuffers; *ptr++ = GLX_RED_SIZE; *ptr++ = w->glwDrawingArea.redSize; *ptr++ = GLX_GREEN_SIZE; *ptr++ = w->glwDrawingArea.greenSize; *ptr++ = GLX_BLUE_SIZE; *ptr++ = w->glwDrawingArea.blueSize; *ptr++ = GLX_ALPHA_SIZE; *ptr++ = w->glwDrawingArea.alphaSize; *ptr++ = GLX_DEPTH_SIZE; *ptr++ = w->glwDrawingArea.depthSize; *ptr++ = GLX_STENCIL_SIZE; *ptr++ = w->glwDrawingArea.stencilSize; *ptr++ = GLX_ACCUM_RED_SIZE; *ptr++ = w->glwDrawingArea.accumRedSize; *ptr++ = GLX_ACCUM_GREEN_SIZE; *ptr++ = w->glwDrawingArea.accumGreenSize; *ptr++ = GLX_ACCUM_BLUE_SIZE; *ptr++ = w->glwDrawingArea.accumBlueSize; *ptr++ = GLX_ACCUM_ALPHA_SIZE; *ptr++ = w->glwDrawingArea.accumAlphaSize; *ptr++ = None; assert((ptr-w->glwDrawingArea.attribList)glwDrawingArea.attribList); w->glwDrawingArea.visualInfo=glXChooseVisual(XtDisplay(w),XScreenNumberOfScreen(XtScreen(w)),w->glwDrawingArea.attribList); if(!w->glwDrawingArea.visualInfo) error((Widget)w,"requested visual not supported"); } /* Initialize the colormap based on the visual info. * This routine maintains a cache of visual-infos to colormaps. If two * widgets share the same visual info, they share the same colormap. * This function is called by the callProc of the colormap resource entry. */ static void createColormap(GLwDrawingAreaWidget w,int offset,XrmValue *value){ static struct cmapCache { Visual *visual; Colormap cmap; } *cmapCache; static int cacheEntries=0; static int cacheMalloced=0; register int i; assert(w->glwDrawingArea.visualInfo); /* see if we can find it in the cache */ for(i=0; iglwDrawingArea.visualInfo->visual){ value->addr=(XtPointer)(&cmapCache[i].cmap); return; } } /* not in the cache, create a new entry */ if(cacheEntries >= cacheMalloced){ /* need to malloc a new one. Since we are likely to have only a * few colormaps, we allocate one the first time, and double * each subsequent time. */ if(cacheMalloced==0){ cacheMalloced=1; cmapCache=(struct cmapCache*)XtMalloc(sizeof(struct cmapCache)); } else{ cacheMalloced<<=1; cmapCache=(struct cmapCache*)XtRealloc((char*)cmapCache,sizeof(struct cmapCache)*cacheMalloced); } } cmapCache[cacheEntries].cmap=XCreateColormap(XtDisplay(w), RootWindow(XtDisplay(w), w->glwDrawingArea.visualInfo->screen), w->glwDrawingArea.visualInfo->visual, AllocNone); cmapCache[cacheEntries].visual=w->glwDrawingArea.visualInfo->visual; value->addr=(XtPointer)(&cmapCache[cacheEntries++].cmap); } static void Initialize(GLwDrawingAreaWidget req,GLwDrawingAreaWidget neww,ArgList args,Cardinal *num_args){ /* fix size */ if(req->core.width==0) neww->core.width=100; if(req->core.height==0) neww->core.width=100; /* create the attribute list if needed */ neww->glwDrawingArea.myList=FALSE; if(neww->glwDrawingArea.attribList==NULL){ neww->glwDrawingArea.myList=TRUE; createAttribList(neww); } /* Gotta have it */ assert(neww->glwDrawingArea.attribList); /* determine the visual info if needed */ neww->glwDrawingArea.myVisual=FALSE; if(neww->glwDrawingArea.visualInfo==NULL){ neww->glwDrawingArea.myVisual=TRUE; createVisualInfo(neww); } /* Gotta have that too */ assert(neww->glwDrawingArea.visualInfo); neww->core.depth=neww->glwDrawingArea.visualInfo->depth; /* Reobtain the colormap and colors in it using XtGetApplicationResources*/ XtGetApplicationResources((Widget)neww,neww,initializeResources,XtNumber(initializeResources),args,*num_args); /* obtain the color resources if appropriate */ if(req->glwDrawingArea.allocateBackground){ XtGetApplicationResources((Widget)neww,neww,backgroundResources,XtNumber(backgroundResources),args,*num_args); } #ifdef __GLX_MOTIF if(req->glwDrawingArea.allocateOtherColors){ XtGetApplicationResources((Widget)neww,neww,otherColorResources,XtNumber(otherColorResources),args,*num_args); } #endif } static void Realize(Widget w,Mask *valueMask,XSetWindowAttributes *attributes){ register GLwDrawingAreaWidget glw=(GLwDrawingAreaWidget)w; GLwDrawingAreaCallbackStruct cb; Widget parentShell; Status status; Window windows[2],*windowsReturn,*windowList; int countReturn,i; /* if we haven't requested that the background be both installed and * allocated, don't install it. */ if(!(glw->glwDrawingArea.installBackground && glw->glwDrawingArea.allocateBackground)){ *valueMask&=~CWBackPixel; } XtCreateWindow(w,(unsigned int)InputOutput,glw->glwDrawingArea.visualInfo->visual,*valueMask,attributes); /* if appropriate, call XSetWMColormapWindows to install the colormap */ if(glw->glwDrawingArea.installColormap){ /* Get parent shell */ for(parentShell=XtParent(w); parentShell&&!XtIsShell(parentShell); parentShell=XtParent(parentShell)); if(parentShell && XtWindow(parentShell)){ /* check to see if there is already a property */ status=XGetWMColormapWindows(XtDisplay(parentShell),XtWindow(parentShell),&windowsReturn,&countReturn); /* if no property, just create one */ if(!status){ windows[0]=XtWindow(w); windows[1]=XtWindow(parentShell); XSetWMColormapWindows(XtDisplay(parentShell),XtWindow(parentShell),windows,2); } /* there was a property, add myself to the beginning */ else{ windowList=(Window *)XtMalloc((sizeof(Window))*(countReturn+1)); windowList[0]=XtWindow(w); for(i=0; icore.width; cb.height=glw->core.height; XtCallCallbackList((Widget)glw,glw->glwDrawingArea.ginitCallback,&cb); } static void Redraw(GLwDrawingAreaWidget w,XEvent *event,Region region){ GLwDrawingAreaCallbackStruct cb; if(!XtIsRealized((Widget)w)) return; cb.reason=GLwCR_EXPOSE; cb.event=event; cb.width=w->core.width; cb.height=w->core.height; XtCallCallbackList((Widget)w,w->glwDrawingArea.exposeCallback,&cb); } static void Resize(GLwDrawingAreaWidget glw){ GLwDrawingAreaCallbackStruct cb; if(!XtIsRealized((Widget)glw)) return; cb.reason=GLwCR_RESIZE; cb.event=NULL; cb.width=glw->core.width; cb.height=glw->core.height; XtCallCallbackList((Widget)glw,glw->glwDrawingArea.resizeCallback,&cb); } static void Destroy(GLwDrawingAreaWidget glw){ Window *windowsReturn; Widget parentShell; Status status; int countReturn; register int i; if(glw->glwDrawingArea.myList && glw->glwDrawingArea.attribList){ XtFree((XtPointer)glw->glwDrawingArea.attribList); } if(glw->glwDrawingArea.myVisual && glw->glwDrawingArea.visualInfo){ XtFree((XtPointer)glw->glwDrawingArea.visualInfo); } /* if my colormap was installed, remove it */ if(glw->glwDrawingArea.installColormap){ /* Get parent shell */ for(parentShell=XtParent(glw); parentShell&&!XtIsShell(parentShell); parentShell=XtParent(parentShell)); if(parentShell && XtWindow(parentShell)){ /* make sure there is a property */ status=XGetWMColormapWindows(XtDisplay(parentShell),XtWindow(parentShell),&windowsReturn,&countReturn); /* if no property, just return. If there was a property, continue */ if(status){ /* search for a match */ for(i=0; icore.width; cb.height=glw->core.height; XtCallCallbackList((Widget)glw,glw->glwDrawingArea.inputCallback,&cb); } #ifdef __GLX_MOTIF /* Create routine */ Widget GLwCreateMDrawingArea(Widget parent, char *name,ArgList arglist,Cardinal argcount){ return XtCreateWidget(name,glwMDrawingAreaWidgetClass, parent, arglist,argcount); } #endif #ifndef __GLX_MOTIF /* Make context current */ void GLwDrawingAreaMakeCurrent(Widget w,GLXContext ctx){ glXMakeCurrent(XtDisplay(w),XtWindow(w),ctx); } /* Swap buffers convenience function */ void GLwDrawingAreaSwapBuffers(Widget w){ glXSwapBuffers(XtDisplay(w),XtWindow(w)); } #endif