Falsely culling of pixels using SV_DepthGreaterEqual

[Tim_B_3]

Hello Intel,

we found a serious bug when using SV_DepthGreaterEqual on Windows 7 with Intel HD Graphics 4600.
We created a repository for you to reproduce the bug as easily as possible:
https://github.com/TimBo93/DepthGreaterEqualIntelBug

System Used: (Manufacturer/Model)
CPU SKU: i5
GPU SKU: Intel HD Graphics 4600
Processor Line: ?
System BIOS Version: ?
CMOS settings: ?
Graphics Driver Version: 10.18.14.4414
GOP/VBIOS Version: ?
Operating System: Windows 7
OS Version: SP1 Version 6.1
API: Direct3D 11 Shader Model 5
Occurs on non-Intel GPUs?: No (The bug does not occure with Windows 10, same device but newest Windows Update Provider Drivers)

Steps to Reproduce:
-------------------------------
1. Clone or download the repository above
2. Execute or compile Tutorial2

Expected Results:
-------------------------------
https://github.com/TimBo93/DepthGreaterEqualIntelBug/blob/master/Images/Correct_OnWin10.PNG

Actual Results:
-------------------------------
https://github.com/TimBo93/DepthGreaterEqualIntelBug/blob/master/Images/Bug_OnWin7.PNG

Additional Information:
Please checkout this repository for further informations:

https://github.com/TimBo93/DepthGreaterEqualIntelBug/blob/master/README.md

kind regards,
TimBo 

[Michael_C_Intel2]

Hi Tim,

Does the issue happen on this driver?

https://downloadcenter.intel.com/download/26229/Intel-Graphics-Driver-for-Windows-10-15-40-4th-Gen-?product=97500

The driver branch you are using is EOL. Need to see if it happens with a driver from the 15.40 branch. 

Thanks!