HD 4600 issue with glPolygonOffset

[Thibaut_A_]

Hello,

I have some trouble using glPolygonOffset on INTEL card. It doesn't seems to be taken in account.

System Setup Information:
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GPU: Optimus system with quadro K2100M - driver 10.18.13.6175 and Intel HD 4600 - drivers 10.18.14.4432 on a DELL precision M4800
Os: Windows 7 64
Proc: Intel Core I7-4930MX
API: OpenGL

Steps to Reproduce:
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- Unzip archive and execute polygonOffset.exe. Source code is included in archive. You may need vc2015 redist, included in archive.

Expected Results:
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offset_ok.png

Actual Results:
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offset_ko.png (Z fighting between teapot and wire teapot)

Additional Information:
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The issue occurs with INTEL but is not reproducible on various NVidia or AMD GPU. It has reported also on HD 5500 driver 20.19.15.4531

[Michael_C_Intel2]

Hi Andrieu,

I'm afraid no further driver releases are planned for the 15.36 and 15.40 branches that support the HD 4xxx products. 

-Michael

[Thibaut_A_]

Hi,

Thanks for the information. The issue have also been reported on HD5500, driver 20.19.15.4531. Is this product still supported ?

[Michael_C_Intel2]

It is on a limited basis, I am checking to see if/when the next driver release is planned.