#! /usr/bin/env python
# encoding: utf-8
# mittorn, 2018

from waflib import Logs
import os

top = '.'

def options(opt):
	grp = opt.add_option_group('ref_gl options')

	grp.add_option('--enable-static-gl', action='store_true', dest='GL_STATIC', default=False,
		help = 'enable direct linking to opengl [default: %default]')

	grp.add_option('--enable-gles1', action='store_true', dest='NANOGL', default=False,
		help = 'enable gles1 renderer [default: %default]')

	grp.add_option('--enable-gles2', action='store_true', dest='GLWES', default=False,
		help = 'enable gles2 renderer [default: %default]')

	grp.add_option('--enable-gl4es', action='store_true', dest='GL4ES', default=False,
		help = 'enable gles2 renderer [default: %default]')

	grp.add_option('--disable-gl', action='store_false', dest='GL', default=True,
		help = 'disable opengl [default: %default]')

	# stub
	return

def configure(conf):
	# check for dedicated server build
	if conf.options.DEDICATED:
		return

	conf.define_cond('SUPPORT_BSP2_FORMAT', conf.options.SUPPORT_BSP2_FORMAT)

	conf.env.NANOGL = conf.options.NANOGL
	conf.env.GLWES  = conf.options.GLWES
	conf.env.GL4ES     = conf.options.GL4ES
	conf.env.GL     = conf.options.GL

	if conf.env.NANOGL:
		conf.add_subproject('nanogl')
	if conf.env.GLWES:
		conf.add_subproject('gl-wes-v2')

	conf.env.GL_STATIC = conf.options.GL_STATIC
	if conf.env.GL_STATIC:
		conf.check(lib='GL')

	conf.define('REF_DLL', 1)
	if conf.env.DEST_OS2 == 'android':
		conf.check_cc(lib='log')

def build(bld):
	libs = [ 'public', 'M' ]

	source = bld.path.ant_glob(['*.c'])

	includes = ['.',
		'../filesystem',
		'../engine',
		'../engine/common',
		'../engine/server',
		'../engine/client',
		'../public',
		'../common',
		'../pm_shared' ]

	if bld.env.GL:
		bld.shlib(
			source   = source,
			target   = 'ref_gl',
			features = 'c',
			includes = includes,
			use      = libs + (['GL'] if bld.env.GL_STATIC else []),
			defines  = ['XASH_GL_STATIC'] if bld.env.GL_STATIC else [],
			install_path = bld.env.LIBDIR,
			subsystem = bld.env.MSVC_SUBSYSTEM
		)

	if bld.env.NANOGL:
		bld.add_subproject('nanogl')
		bld.shlib(
			source   = source,
			target   = 'ref_gles1',
			features = 'c',
			includes = includes,
			use      = libs + ['DL', 'nanogl'],
			defines  = ['XASH_NANOGL'],
			install_path = bld.env.LIBDIR,
			subsystem = bld.env.MSVC_SUBSYSTEM)

	if bld.env.GLWES:
		bld.add_subproject('gl-wes-v2')
		bld.shlib(
			source   = source,
			target   = 'ref_gles2',
			features = 'c',
			includes = includes,
			use      = libs + ['DL', 'gl-wes-v2'],
			defines  = ['XASH_WES'],
			install_path = bld.env.LIBDIR,
			subsystem = bld.env.MSVC_SUBSYSTEM)

	if bld.env.GL4ES:
		gl4es_srcdir = bld.path.find_node('gl4es/src')

		bld.stlib(
			source   = gl4es_srcdir.ant_glob(['gl/*.c', 'gl/*/*.c', 'glx/hardext.c']),
			target   = 'gl4es',
			features = 'c',
			includes = ['gl4es/src', 'gl4es/src/gl', 'gl4es/src/glx', 'gl4es/include'],
			defines = ['NOX11', 'NO_GBM', 'NO_INIT_CONSTRUCTOR', 'DEFAULT_ES=2', 'NOEGL', 'EXTERNAL_GETPROCADDRESS=GL4ES_GetProcAddress', 'NO_LOADER', 'STATICLIB'],
			cflags = ['-w', '-fvisibility=hidden', '-std=gnu99'],
			use      = libs,
			subsystem = bld.env.MSVC_SUBSYSTEM)

		bld.shlib(
			source   = source,
			target   = 'ref_gl4es',
			features = 'c',
			includes = includes,
			use      = libs + ['DL', 'gl4es', 'LOG'],
			defines  = ['XASH_GL4ES', 'XASH_GL_STATIC'],
			install_path = bld.env.LIBDIR,
			subsystem = bld.env.MSVC_SUBSYSTEM)