Blender/Cycles 2.78a OpenCL kernel compilation error on AMD GPU #50474

New Issue

Sam Liu · 2017-01-19T14:57:50+01:00

Sam Liu commented

2017-01-19 14:57:50 +01:00

System Information
windows, linux, All AMD GPUs

Blender Version
Broken: (2.78a)
Worked: (2.78)

Short description of error
OpenCL kernel build output:
"E:\tests\blender-2.78a-windows64\2.78\scripts\addons\cycles\kernel\kernels/opencl../../kernel_projection.h", line 238: error:

        expression must have pointer-to-struct-or-union type
              float altitude = fabsf(safe_asinf(D->z));
                               ^

In blender-2.78a-windows64\2.78\scripts\addons\cycles\kernel\kernel_projection.h line 238

      float altitude = fabsf(safe_asinf(D->z));

D is of type float3*
The OpenCL spec v1.2/2.0 only defines the . operator for a vector type. Using -> operator on a pointer to vector results in implementation defined behaviour.

The fix is to replace D->z by (*D).z

Exact steps for others to reproduce the error
Launch the app. Press "CTRL+ALT+U" ->Select "System"->"OpenCL" and save the settings.
click render.

**System Information** windows, linux, All AMD GPUs **Blender Version** Broken: (2.78a) Worked: (2.78) **Short description of error** OpenCL kernel build output: "E:\tests\blender-2.78a-windows64\2.78\scripts\addons\cycles\kernel\kernels/opencl\../../kernel_projection.h", line 238: error: ``` expression must have pointer-to-struct-or-union type float altitude = fabsf(safe_asinf(D->z)); ^ ``` In blender-2.78a-windows64\2.78\scripts\addons\cycles\kernel\kernel_projection.h line 238 ``` float altitude = fabsf(safe_asinf(D->z)); ``` D is of type float3* The OpenCL spec v1.2/2.0 only defines the . operator for a vector type. Using -> operator on a pointer to vector results in implementation defined behaviour. The fix is to replace D->z by (*D).z **Exact steps for others to reproduce the error** Launch the app. Press "CTRL+ALT+U" ->Select "System"->"OpenCL" and save the settings. click render.

Sam Liu commented

2017-01-19 14:57:50 +01:00

Changed status to: 'Open'

Sam Liu commented

2017-01-19 14:57:50 +01:00

Added subscriber: @samliu

Joey Ferwerda commented

2017-01-19 16:12:23 +01:00

Added subscriber: @TheOnlyJoey

Joey Ferwerda commented

2017-01-19 16:12:23 +01:00

Thanks for the report.

This seems to be fixed already in #49846
Can you test with the latest version on buildbot?
https://builder.blender.org/download/

Also please report with tested Operating System, specific GPU and driver version.
It is impossible for us to test without this information, as things could be a driver bug or require us to test on specific hardware.

Thanks for the report. This seems to be fixed already in #49846 Can you test with the latest version on buildbot? https://builder.blender.org/download/ Also please report with tested Operating System, specific GPU and driver version. It is impossible for us to test without this information, as things could be a driver bug or require us to test on specific hardware.

Joey Ferwerda commented

2017-01-19 17:25:39 +01:00

Changed status from 'Open' to: 'Resolved'

Joey Ferwerda closed this issue

2017-01-19 17:25:39 +01:00

Joey Ferwerda self-assigned this 2017-01-19 17:25:39 +01:00

Joey Ferwerda commented

2017-01-19 17:25:39 +01:00

Closed for being duplicate of #49846

Sam Liu commented

2017-01-20 21:49:17 +01:00

Verified the issue was fixed
Blender version: 2.78 2017-01-19 b76dbf5
GPU: AMD Bonaire
Driver: 15.30

Thanks!

Verified the issue was fixed Blender version: 2.78 2017-01-19 b76dbf5 GPU: AMD Bonaire Driver: 15.30 Thanks!

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Blender/Cycles 2.78a OpenCL kernel compilation error on AMD GPU #50474