gen_exports.tcl

if 0 { 
 Copyright (c) 2008, 2009 Apple Inc.
 
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}

package require Tcl 8.5

proc main {argc argv} {
    if {2 != $argc} {
	puts stderr "syntax is: [info script] serialized-array-file export.list"
	return 1
    }

    set fd [open [lindex $argv 0] r]
    array set api [read $fd]
    close $fd

    #Start with 1.0
    set glxlist [list \
                     glXChooseVisual glXCreateContext glXDestroyContext \
                     glXMakeCurrent glXCopyContext glXSwapBuffers \
                     glXCreateGLXPixmap glXDestroyGLXPixmap \
                     glXQueryExtension glXQueryVersion \
                     glXIsDirect glXGetConfig \
                     glXGetCurrentContext glXGetCurrentDrawable \
                     glXWaitGL glXWaitX glXUseXFont]

    #GLX 1.1 and later
    lappend glxlist glXQueryExtensionsString glXQueryServerString \
                     glXGetClientString

    #GLX 1.2 and later
    lappend glxlist glXGetCurrentDisplay

    #GLX 1.3 and later
    lappend glxlist glXChooseFBConfig glXGetFBConfigAttrib \
        glXGetFBConfigs glXGetVisualFromFBConfig \
        glXCreateWindow glXDestroyWindow \
        glXCreatePixmap glXDestroyPixmap \
        glXCreatePbuffer glXDestroyPbuffer \
        glXQueryDrawable glXCreateNewContext \
        glXMakeContextCurrent glXGetCurrentReadDrawable \
        glXQueryContext glXSelectEvent glXGetSelectedEvent

    #GLX 1.4 and later
    lappend glxlist glXGetProcAddress

    #Extensions
    lappend glxlist glXGetProcAddressARB

    #Old extensions we don't support and never really have, but need for
    #symbol compatibility.  See also: glx_empty.c
    lappend glxlist glXSwapIntervalSGI glXSwapIntervalMESA \
	glXGetSwapIntervalMESA glXBeginFrameTrackingMESA \
	glXEndFrameTrackingMESA glXGetFrameUsageMESA \
	glXQueryFrameTrackingMESA glXGetVideoSyncSGI \
	glXWaitVideoSyncSGI glXJoinSwapGroupSGIX \
	glXBindSwapBarrierSGIX glXQueryMaxSwapBarriersSGIX \
	glXGetSyncValuesOML glXSwapBuffersMscOML \
	glXWaitForMscOML glXWaitForSbcOML \
	glXAllocateMemoryMESA glXFreeMemoryMESA \
	glXGetMemoryOffsetMESA glXReleaseBuffersMESA \
	glXCreateGLXPixmapMESA glXCopySubBufferMESA \
	glXQueryGLXPbufferSGIX glXCreateGLXPbufferSGIX \
	glXDestroyGLXPbufferSGIX glXSelectEventSGIX \
	glXGetSelectedEventSGIX 
    
    #These are for GLX_SGIX_fbconfig, which isn't implemented, because
    #we have the GLX 1.3 GLXFBConfig functions which are in the standard spec.
    #It should be possible to support these to some extent.
    #The old libGL somewhat supported the GLXFBConfigSGIX code, but lacked
    #pbuffer, and pixmap support.
    #We mainly just need these stubs for linking with apps, because for 
    #some reason the OpenGL site suggests using the latest glxext.h, 
    #and glxext.h defines all GLX extensions, which doesn't seem right for
    #compile-time capability detection.
    #See also: http://www.mesa3d.org/brianp/sig97/exten.htm#Compile
    #which conflicts with: the ABI registry from what I saw on opengl.org. 
    #By disabling some of the #defines in glxext.h we break some software,
    #and by enabling them without the symbols we break others (in Mesa).
    #I think a lot of OpenGL-based programs have issues one way or another.
    #It seems that even Mesa developers are confused on this issue, because
    #Mesa-7.3/progs/xdemos/glxgears_fbconfig.c has comments about breakage 
    #in some comments.
    lappend glxlist glXGetFBConfigAttribSGIX \
	glXChooseFBConfigSGIX \
	glXGetVisualFromFBConfigSGIX \
	glXCreateGLXPixmapWithConfigSGIX \
	glXCreateContextWithConfigSGIX \
	glXGetFBConfigFromVisualSGIX
    

    set fd [open [lindex $argv 1] w]
    
    foreach f [lsort -dictionary [array names api]] {
	puts $fd _gl$f
    }

    foreach f [lsort -dictionary $glxlist] {
	puts $fd _$f
    }
    
    close $fd

    return 0
}

exit [main $::argc $::argv]