# vim:ts=4
#
# Copyright (c) 2010 Hypertriton, Inc. <http://hypertriton.com/>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
# USE OF THIS SOFTWARE EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

sub Test
{
	my ($ver) = @_;
	my $code = << 'EOF';
#include <windows.h>
int main(int argc, char *argv[]) {
	HWND hwnd;
	HDC hdc;
	HGLRC hglrc;

	hwnd = CreateWindowEx(0, "a", "a", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT,
	    CW_USEDEFAULT, 0,0, NULL, NULL, GetModuleHandle(NULL), NULL);
	hdc = GetDC(hwnd);
	hglrc = wglCreateContext(hdc);
	wglDeleteContext(hglrc);
	ReleaseDC(hwnd, hdc);
	DestroyWindow(hwnd);
	return (0);
}
EOF
	MkCompileC('HAVE_WGL', '${OPENGL_CFLAGS}', '${OPENGL_LIBS}', $code);
	return (0);
}

sub Link
{
	my $lib = shift;

	if ($lib ne 'wgl') {
		return (0);
	}
	return (1);
}

sub Emul
{
	my ($os, $osrel, $machine) = @_;
	
	if ($os eq 'windows') {
		MkDefine('HAVE_WGL', 'yes');
	} else {
		MkDefine('HAVE_WGL', 'no');
	}
	MkSaveDefine('HAVE_WGL');
	return (1);
}

BEGIN
{
	$DESCR{'wgl'} = 'the WGL interface';
	$TESTS{'wgl'} = \&Test;
	$EMUL{'wgl'} = \&Emul;
	$LINK{'wgl'} = \&Link;
	$DEPS{'wgl'} = 'cc';
}

;1