topic Re: AutoCAD 3D Rendering by CPU, although the Hardware Acceleration is on in AutoCAD Forum

AutoCAD 3D Rendering by CPU, although the Hardware Acceleration is on

arman_zmn — Wed, 28 Jan 2015 12:04:14 GMT

Hello Everyone....

as the title states,

i am rendering a very simple 3D object.

although the Hardware Acceleration os on, AutoCAD 2015 is 3D Rendering by CPU.

my PC has a GTX 760 from Nvidia with the latest driver.

Can anyone find a solution?

here is a screenshot,

Re: AutoCAD 3D Rendering by CPU, although the Hardware Acceleration is on

Alfred.NESWADBA — Wed, 28 Jan 2015 12:55:31 GMT

Hi,

>> Can anyone find a solution?

When you start the command _RENDER then AutoCAD is using MentalRay (currently) and not DirectX-Shaders, so it needs to use the CPU and can't use GPU.
All what happens within viewports defined by visual styles (as long as you don't use "2D-wireframe") is done by GPU.

- alfred -

Re: AutoCAD 3D Rendering by CPU, although the Hardware Acceleration is on

DarrenP — Wed, 28 Jan 2015 14:25:27 GMT

if you want real GPU rendering look at 3ds max

Re: AutoCAD 3D Rendering by CPU, although the Hardware Acceleration is on

Alfred.NESWADBA — Wed, 28 Jan 2015 15:28:09 GMT

Hi,

>> if you want real GPU rendering look at 3ds max

Just to make sure, not all rendering engines for 3DS Max can use GPU.

Quicksiver Renderer and iRay do (iRay partially), but e.g. "Default Scanline Renderer" does not.

- alfred -