Heidi

[#1]

Hello,

as I understand, Heidi is the 3D rendering model, developed by Autodesk, which is used in the development of AutoCAD and other Autodesk products.

Since I knew that AutoCAD uses OpenGL hardware acceleration, I thought, that AutoCAD is developed using OpenGL. But now it seems to me that it's not so.

Can someone tell me is Heidi using OpenGL or not, and more details on how is AutoCAD using OpenGL acceleration.

Any related links and information will be appreciated.

Thanks in advance.
Alexander

[#2]

Heidi has a variety of drivers. Heidi can use its own software Z buffer and
then render using the BLT of GDI. Alternatively, Heidi can use an OpenGL
driver and send OpenGL commands instead. I believe it also has a Direct3D
driver that few people use.

wrote in message news:4942741@discussion.autodesk.com...
Hello,

as I understand, Heidi is the 3D rendering model, developed by Autodesk,
which is used in the development of AutoCAD and other Autodesk products.

Since I knew that AutoCAD uses OpenGL hardware acceleration, I thought, that
AutoCAD is developed using OpenGL. But now it seems to me that it's not so.

Can someone tell me is Heidi using OpenGL or not, and more details on how is
AutoCAD using OpenGL acceleration.

Any related links and information will be appreciated.

Thanks in advance.
Alexander

[#3]

Thanks for answering.

Ok, but otherwise, apart from drivers does Heidi use (is built upon) OpenGL API?

Alexander

[#4]

No. Heidi has its own API. The API eventually boils itself down to driver
commands, depending on the driver being used, but the API is platform and
device independent. Heidi (HOOPS Extensible Immediate Drawing Interface) is
the child of HOOPS. HOOPS has a database. Heidi does not. So Heidi was
developed as an offshoot of HOOPS - not OpenGL.

wrote in message news:4943718@discussion.autodesk.com...
Thanks for answering.

Ok, but otherwise, apart from drivers does Heidi use (is built upon) OpenGL
API?

Alexander

[#5]

Thanks a lot Scott.

All the best.