[fixed] shader => 0,transparent => true

[Hank]

hello,

During work with transparent option in material area I got:

Dump written 2019-6-13_8-51
Version: 2.2.4
OS: Windows 8 (build 9200), 64-bit edition
GPU: Intel | Intel® HD Graphics 520
Window: geom
Reason: {{badmap,
{false,
#{shader => 0,transparent => true,
view_from_world =>
{e3d_transf,
{0.7163019434246543,-0.2529058053981006,
0.6503461996829085,0.0,0.9320078692827986,
0.36243803828370164,-0.6977904598416801,
-0.2596150711936347,0.6675990480543397,
3.1797939192201836,6.146082836715412,...},
{0.7163019434246543,0.0,-0.6977904598416801,
-0.2529058053981006,0.9320078692827986,
-0.2596150711936347,0.6503461996829085,
0.36243803828370164,0.6675990480543397,
-2.389349337588752,...}},
ws_eyepoint =>
{-2.389349337588752,-6.656680138883222,
2.104210976914315},
{ambient_light,'UseDiffuseMap'} => 0,
{ambient_light,'UseEmissionMap'} => 0,
{ambient_light,'UseNormalMap'} => 0,
{ambient_light,'UsePBRMap'} => 0,
{ambient_light,diffuse} =>
{0.9764705882352941,0.9882352941176471,1.0,0.2},
{ambient_light,emission} => {0.0,0.0,0.0,0.2},
{ambient_light,light_diffuse} => {1.0,1.0,1.0,1.0},
{ambient_light,metallic} => 0.0,
{ambient_light,roughness} => 0.6,
{ambient_light,ws_eyepoint} =>
{-2.389349337588752,-6.656680138883222,
2.104210976914315},...}}},
[{maps,get,
[{material,default},
{false,
#{shader => 0,transparent => true,
view_from_world =>
{e3d_transf,
{0.7163019434246543,-0.2529058053981006,
0.6503461996829085,0.0,0.9320078692827986,
0.36243803828370164,...},
{0.7163019434246543,0.0,-0.6977904598416801,
-0.2529058053981006,0.9320078692827986,...}},
ws_eyepoint =>
{-2.389349337588752,-6.656680138883222,
2.104210976914315},
{ambient_light,'UseDiffuseMap'} => 0,
{ambient_light,'UseEmissionMap'} => 0,
{ambient_light,'UseNormalMap'} => 0,
{ambient_light,'UsePBRMap'} => 0,
{ambient_light,diffuse} =>
{0.9764705882352941,0.9882352941176471,1.0,0.2},...}},
undefined],
[{file,"maps.erl"},{line,207}]},
{wings_material,apply_material_1,4,
[{file,"wings_material.erl"},{line,445}]},
{wings_draw,'-do_draw_mat_faces/4-fun-0-',4,
[{file,"wings_draw.erl"},{line,929}]},
{lists,foldl,3,[{file,"lists.erl"},{line,1263}]},
{wings_draw,'-draw_mat_faces/4-fun-0-',6,
[{file,"wings_draw.erl"},{line,915}]},
{wings_dl,call,2,[{file,"wings_dl.erl"},{line,178}]},
{wings_render,render_smooth_objects_1,4,
[{file,"wings_render.erl"},{line,270}]},
{wings_render,render_smooth_objects,4,
[{file,"wings_render.erl"},{line,237}]},
{wings_render,render_objects,4,
[{file,"wings_render.erl"},{line,155}]},
{wings_render,render,1,[{file,[...]},{line,...}]},
{wings,'-redraw/2-fun-0-',2,[{file,...},{...}]},
{wx,batch,1,[{...}|...]},
{wings,handle_event_3,2,[...]},
{wings_wm,handle_event,3,...},
{wings_wm,send_event,...},
{wings_wm,...},
{...}|...]}

Stack trace:
[{wx,batch,1,[{file,"wx.erl"},{line,186}]},
{wings,handle_event_3,2,[{file,"wings.erl"},{line,424}]},
{wings_wm,handle_event,3,[{file,"wings_wm.erl"},{line,984}]},
{wings_wm,send_event,2,[{file,"wings_wm.erl"},{line,951}]},
{wings_wm,do_dispatch,2,[{file,"wings_wm.erl"},{line,852}]},
{wings_wm,redraw_win,1,[{file,"wings_wm.erl"},{line,893}]},
{lists,foreach,2,[{file,"lists.erl"},{line,1338}]},
{wings_wm,redraw_all,0,[{file,"wings_wm.erl"},{line,868}]},
{wings,init_part2,2,[{file,"wings.erl"},{line,106}]},
{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,249}]}]

BR, Hank