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How badly does this affect you
No problem2
Slows down a bit0
Slows down a lot2
Totally unuseable1

Total Members Voted: 5

OpenGL Shade mode - rubber band line issue
Read 406 times
December 03, 2019, 09:23:02 AM
This subject has been discussed a lot, and acknowledged by developers but some say it does not affect them at all.  Apparently it is very difficult to fix.

To test you should start a new blank 3D drawing, in any recent version of DCAD max.

Draw a simple cube, or any other simple object, and turn on shading using the OpenGL mode (quick or gouraud), so the object remains shaded while you are drawing.  This mode is very useful for editing objects visually, because you see the shaded effects of what you just did.

Then try to draw a multi-segmented line by setting points with your mouse (not by point-relative command) just by clicking.  Try to place at least 6 points for the line.

Then try drawing a tube or a torus.   These involve numerous rubber-band lines.  For some it is almost impossible to set these points by mouse.

Then, whichever way this works out, please let us know your computer specs and video hardware, maybe we can find out what systems have the problem and which dont, or better yet something we can change to fix it.

User since Pro-design

December 03, 2019, 09:35:27 AM
I voted under the totally unuseable which is true on all three of my computers two laptops and a desktop

To get the following information in designcad help about, and then system info at the bottom, and under components pick the display section

Name   Intel(R) HD Graphics 520
PNP Device ID   PCI\VEN_8086&DEV_1916&SUBSYS_80E0103C&REV_07\3&11583659&1&10
Adapter Type   Intel(R) HD Graphics Family, Intel Corporation compatible
Adapter Description   Intel(R) HD Graphics 520
Adapter RAM   1.00 GB (1,073,741,824 bytes)
Installed Drivers   C:\WINDOWS\System32\DriverStore\FileRepository\ki126576.inf_amd64_42623e9e7b07ec7e\igdumdim64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\ki126576.inf_amd64_42623e9e7b07ec7e\igd10iumd64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\ki126576.inf_amd64_42623e9e7b07ec7e\igd10iumd64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\ki126576.inf_amd64_42623e9e7b07ec7e\igd12umd64.dll
Driver Version
INF File   oem68.inf (iSKLD_w10_DS section)
Color Planes   Not Available
Color Table Entries   4294967296
Resolution   1920 x 1080 x 59 hertz

User since Pro-design

December 03, 2019, 10:22:22 AM

I have reported this elsewhere, but I'll repeat it here so we will have information from everyone in one place.

I use two machines. On both all I see is very brief flickering of the rubberbands in OpenGL Quick or Gouraud shading. The redraws are very fast and do not interfere with drawing. I voted "no problem."

OS: Windows 7 Pro 64 bit with SP-1 update.
CPU: i7-3930K 6 core @3.2 GHz - 3.7 GHz.
RAM: 32 Gbytes of DDR3-1600 interlaced 1:4 with 1.6 GHz memory bus speed.
Video: Nvidia Quadro 2000 with 192 GPU (Graphic Processor Unit) cores and 1 GByte GDDR5 RAM.
Driver: Nvidia with CUDA/OpenGL hardware support set to automatically best settings for DesignCAD. The driver will use the graphic processors for OpenGL. Supports OpenGL 4.4.

DesignCAD system info:
Name   NVIDIA Quadro 2000
PNP Device ID   PCI\VEN_10DE&DEV_0DD8&SUBSYS_084A10DE&REV_A1\4&2FF74DAD&0&0010
Adapter Type   Quadro 2000, NVIDIA compatible
Adapter Description   NVIDIA Quadro 2000
Adapter RAM   1.00 GB (1,073,741,824 bytes)
Installed Drivers   nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um
Driver Version
INF File   oem29.inf (Section032 section)
Color Planes   Not Available
Color Table Entries   4294967296
Resolution   1920 x 1080 x 60 hertz
Bits/Pixel   32
Memory Address   0xEC000000-0xEE0FFFFF
Memory Address   0xE0000000-0xEBFFFFFF
Memory Address   0xE8000000-0xEBFFFFFF
I/O Port   0x00002000-0x00002FFF
IRQ Channel   IRQ 4294967269
I/O Port   0x000003B0-0x000003BB
I/O Port   0x000003C0-0x000003DF
Memory Address   0xA0000-0xBFFFF
Driver   c:\windows\system32\drivers\nvlddmkm.sys (, 10.74 MB (11,257,120 bytes), 08-Aug-14 10:34 AM)


OS: Windows 10 Home 64 bit with latest updates.
CPU: i&-4510U 2 core @ 2.6 GHz.
RAM: 12 Gbytes of DDR3L-1600 RAM at 1.6 GHz bus speed.
Video: Intel 4400 with 80 SPUs (Shader Processor Units) and 1 Gbyte DDR3L onchip RAM @ 800 MHz.
Driver: Microsoft Unknown OpenGL support. It has a bunch of Microsoft and Intel "OpenCL" dlls (Note: OpenCL and not Open GL). It is supposed to support OpenGL 4.

DesignCAD system info:
Name   Intel(R) HD Graphics Family
PNP Device ID   PCI\VEN_8086&DEV_0A16&SUBSYS_F9201179&REV_0B\3&11583659&1&10
Adapter Type   Intel(R) HD Graphics Family, Intel Corporation compatible
Adapter Description   Intel(R) HD Graphics Family
Adapter RAM   1.00 GB (1,073,741,824 bytes)
Installed Drivers   igdumdim64.dll,igd10iumd64.dll,igd10iumd64.dll,igd12umd64.dll
Driver Version
INF File   oem10.inf (iHSWM_w10_Q0 section)
Color Planes   Not Available
Color Table Entries   4294967296
Resolution   1366 x 768 x 59 hertz
Bits/Pixel   32
Memory Address   0xB2000000-0xB23FFFFF
Memory Address   0xA0000000-0xAFFFFFFF
I/O Port   0x00005000-0x0000503F
IRQ Channel   IRQ 4294967287
Driver   C:\WINDOWS\SYSTEM32\DRIVERS\IGDKMD64.SYS (, 7.60 MB (7,974,352 bytes), 05-May-19 10:01 PM)

« Last Edit: December 03, 2019, 10:38:12 AM by Dr PR »

DesignCAD user since 1987

* December 03, 2019, 06:10:51 PM
OK Rob, I followed your instructions & also vote for 'Unusable'.
Even without attempting to draw a tube my multipoint line was flickering on the first 10 points, 'laggy' on the next 10 and almost unusable by the time I reached 25 points.
This is consistent with my experience in all the years I've been doing 3D work on DCad, not new to recent versions or my current machine.


My specs:
OS Name   Microsoft Windows 10 Pro
System SKU   LENOVO_MT_80W3_BU_idea_FM_Lenovo ideapad 710S Plus-13IKB
Processor   Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz, 2901 Mhz, 2 Core(s), 4 Logical Processor(s)
Installed Physical Memory (RAM)   8.00 GB

And my graphics info, copied from the list you described:

Name   NVIDIA GeForce 940MX
PNP Device ID   PCI\VEN_10DE&DEV_134B&SUBSYS_39EE17AA&REV_A2\4&1DC54DF&0&00E0
Adapter Type   GeForce 940MX, NVIDIA compatible
Adapter Description   NVIDIA GeForce 940MX
Adapter RAM   (2,147,483,648) bytes
Installed Drivers   C:\WINDOWS\System32\DriverStore\FileRepository\nvlt.inf_amd64_a5f6c0a73c89e851\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvlt.inf_amd64_a5f6c0a73c89e851\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvlt.inf_amd64_a5f6c0a73c89e851\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvlt.inf_amd64_a5f6c0a73c89e851\nvldumdx.dll
Driver Version
INF File   oem38.inf (Section188 section)
Color Planes   Not Available
Color Table Entries   Not Available
Resolution   Not Available
Bits/Pixel   Not Available
Memory Address   0x93000000-0x93FFFFFF
Memory Address   0x80000000-0x8FFFFFFF
Memory Address   0x90000000-0x91FFFFFF
IRQ Channel   IRQ 4294967273
Driver   C:\WINDOWS\SYSTEM32\DRIVERSTORE\FILEREPOSITORY\NVLT.INF_AMD64_A5F6C0A73C89E851\NVLDDMKM.SYS (, 13.81 MB (14,482,360 bytes), 27-Sep-17 3:04 AM)
Name   Intel(R) HD Graphics 620
PNP Device ID   PCI\VEN_8086&DEV_5916&SUBSYS_39EE17AA&REV_02\3&11583659&0&10
Adapter Type   Intel(R) HD Graphics Family, Intel Corporation compatible
Adapter Description   Intel(R) HD Graphics 620
Adapter RAM   1.00 GB (1,073,741,824 bytes)
Installed Drivers   C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_dff224ddc0d0b8a1\igdumdim64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_dff224ddc0d0b8a1\igd10iumd64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_dff224ddc0d0b8a1\igd10iumd64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_dff224ddc0d0b8a1\igd12umd64.dll
Driver Version
INF File   oem10.inf (iKBLD_w10_DS section)
Color Planes   Not Available
Color Table Entries   4294967296
Resolution   1920 x 1080 x 59 hertz
Bits/Pixel   32
Memory Address   0x92000000-0x92FFFFFF
Memory Address   0xA0000000-0xAFFFFFFF
I/O Port   0x00004000-0x0000403F
IRQ Channel   IRQ 4294967276
Driver   C:\WINDOWS\SYSTEM32\DRIVERSTORE\FILEREPOSITORY\IGDLH64.INF_AMD64_DFF224DDC0D0B8A1\IGDKMD64.SYS (, 10.56 MB (11,070,456 bytes), 13-Apr-17 6:19 AM)


December 03, 2019, 06:55:16 PM
Adrian, please vote again, there is still only one vote under unuseable that being me!!!

User since Pro-design

* December 03, 2019, 08:26:57 PM
Hi Rob,
So now I guess I'm being thick, but how exactly do I vote?
I can't find any links or references to a poll anywhere...


December 03, 2019, 08:32:27 PM
At the top of the first post in this thread you should see a poll with 4 questions, you just check the bottom one as applicable  :)

User since Pro-design

* December 03, 2019, 08:43:30 PM
Well, maybe I  should, but I don't. >:(
Am I looking in the wrong place?


December 03, 2019, 08:58:24 PM
Should look like this - are you using a theme other than the default?

I don't see any other settings which would affect it.....

User since Pro-design

* December 03, 2019, 09:21:32 PM
This gets weird.
If I log out the voting option appears, when I log in it disappears again.
I did notice on the members list that I'm now listed as a 'Beta Tester', not a regular member. I don't know when that happened (or how) but it never used to be like that.
For the record, I've never beta-tested any versions...
I don't see any way for me to change that setting, I think I need whoever manages the forum to fix it?
Who is that these days?



February 05, 2020, 02:02:46 PM

Not sure if this was mentioned in this thread (I am just seeing this and I don't have time to read through all of it right now):

  The slowdown when creating stuff in shaded mode only happens in OpenGL shading.

  In GDI shading there is no slowdown.
      ... However, in GDI shading the screen only remains shaded as long as you don't do anything to change the view, like regenerating, zooming, rotating the view, etc. Upon creating an entity the screen will show some form of wireframe, either totally or partially, or on top of the shading. Also, newly drawn shadable entities will appear in wireframe. If you scroll the shading off-screen and then slide it back into view it will be wireframe.

On my computer, F8=shade, F6=wireframe, F7=hidden line, but they only work once at a time. By that I mean if the screen was last wireframed of hidden'ed, then pressing F8 will shade. However, if I then do something to cause the screen to go wireframe, then pressing F8 will do nothing. I have to press F6 or F7 first and then press F8 to get the shading back.
   Eg, in GDI mode, wireframe, I draw a box. I press F8 and the screen shades. I then press Y to rotate the screen. The instant I press the mouse button the screen wireframes. After rotating I press F8 to shade... nothing happens. Oh, that's right, I have to press either F6 or F7 first (to wireframe of hide line) then press F8 to shade. Same thing happens if the screen is shaded and then I draw a solid. The solid will appear in wireframe on top of the shaded stuff. To see the new solid shaded I have to press F6 or F7 then press F8.

« Last Edit: February 05, 2020, 02:11:08 PM by Lar »


* February 06, 2020, 05:19:51 AM
Aside from Dcads typical shake rock and wiggle when drawing in open gl > No problem.

Windows 7 64 Bit Home Premium
HP All in one TouchSmart Desktop
Nvidia Geforce 210
Design Cad 3D max 2019
Design Cad 3D max 24

February 10, 2020, 06:30:36 AM

If you draw in OpenGL shading I have created a macro to draw without the slowdown that happens in OpenGL shading, by quickly switching to GDI mode, then back to OpenGL (still evolving, thanks to Dean for critiques thus far)