adding features in Viewport render with OpenCL doesn't trigger a kernel recompile anymore #49496

New Issue

mathieu menuet · 2016-09-30T00:12:07+02:00

mathieu menuet commented

2016-09-30 00:12:07 +02:00

System Information
all vendors

Blender Version
Broken: 2.78
Worked: original patch from AMD for split kernel if I remember correctly.

Short description of error
When adding hairs for example while in viewport render, the kernel will not recompile, making the hairs invisible. User has to toggle twice the render mode for the viewport to get it display the scene correctly. No hints is given about what is wrong.

Exact steps for others to reproduce the error
Start viewport render on the default cube scene and add a hair system. It doesn't render. Toggling to solid mode and back to rendered mode solves the problem.

**System Information** all vendors **Blender Version** Broken: 2.78 Worked: original patch from AMD for split kernel if I remember correctly. **Short description of error** When adding hairs for example while in viewport render, the kernel will not recompile, making the hairs invisible. User has to toggle twice the render mode for the viewport to get it display the scene correctly. No hints is given about what is wrong. **Exact steps for others to reproduce the error** Start viewport render on the default cube scene and add a hair system. It doesn't render. Toggling to solid mode and back to rendered mode solves the problem.

mathieu menuet commented

2016-09-30 00:12:07 +02:00

Changed status to: 'Open'

mathieu menuet commented

2016-09-30 00:12:07 +02:00

Added subscriber: @bliblubli

Sergey Sharybin was assigned by Bastien Montagne

2016-09-30 10:52:48 +02:00

Aaron Carlisle commented

2017-04-20 19:23:15 +02:00

Added subscriber: @Blendify

Aaron Carlisle commented

2017-04-20 19:23:15 +02:00

@bliblubli is this still an issue?

Sergey Sharybin removed their assignment 2017-05-12 16:08:35 +02:00

Mai Lavelle was assigned by Sergey Sharybin

2017-05-12 16:08:35 +02:00

Sergey Sharybin commented

2017-05-12 16:08:35 +02:00

Added subscribers: @MaiLavelle, @Sergey

Sergey Sharybin commented

2017-05-12 16:08:35 +02:00

it is still an issue.

@MaiLavelle, mind giving some help here? The issue here is that we'll need to somehow teach ccl::Session to re-load kernels when something changes.

it is still an issue. @MaiLavelle, mind giving some help here? The issue here is that we'll need to somehow teach `ccl::Session` to re-load kernels when something changes.

blender-admin commented

2017-05-18 04:14:12 +02:00

This issue was referenced by blender/cycles@ed1498b61e

This issue was referenced by blender/cycles@ed1498b61ecac29f962616551f749804d66967b5

blender-admin commented

2017-05-18 04:14:12 +02:00

This issue was referenced by 177385dc43

This issue was referenced by 177385dc439b4f6b478a033413a8df992e7f5ed3

Mai Lavelle commented

2017-05-19 22:29:48 +02:00

Changed status from 'Open' to: 'Resolved'

Mai Lavelle closed this issue

2017-05-19 22:29:48 +02:00

mathieu menuet commented

2017-06-05 19:42:09 +02:00

Changed status from 'Resolved' to: 'Open'

mathieu menuet reopened this issue

2017-06-05 19:42:09 +02:00

mathieu menuet commented

2017-06-05 19:42:09 +02:00

Kernels recompiles now, but on every change, even those that don't change anything to the used kernel. For example, max_closure is set to 64 for viewport rendering to prevent recompiling. Since this patch however, adding a shader to the nodetree triggers a recompile, although having 1 or 2 shader is not important as it will be set to 64 anyway.

So in current state, we have worse of both worlds. The recompile of the kernels and no selective compilation so slower kernel.

Kernels recompiles now, but on every change, even those that don't change anything to the used kernel. For example, max_closure is set to 64 for viewport rendering to prevent recompiling. Since this patch however, adding a shader to the nodetree triggers a recompile, although having 1 or 2 shader is not important as it will be set to 64 anyway. So in current state, we have worse of both worlds. The recompile of the kernels and no selective compilation so slower kernel.

mathieu menuet commented

2017-06-05 20:14:23 +02:00

Changed status from 'Open' to: 'Resolved'

mathieu menuet closed this issue

2017-06-05 20:14:23 +02:00

mathieu menuet commented

2017-06-05 20:14:23 +02:00

it seems to work properly on another computer, will investigate more. Closing in the meantime.

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adding features in Viewport render with OpenCL doesn't trigger a kernel recompile anymore #49496