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Compositor: Remove now-unused "tiled" implementation #118819

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Aras Pranckevicius merged 20 commits from aras_p/blender:com_remove_tiled into main 2024-02-28 16:59:26 +01:00
Conversation 1 Commits 20 Files Changed 296 +256 -20633
Aras Pranckevicius commented 2024-02-27 20:34:29 +01:00
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New ("fullframe") CPU compositor backend is being used now (see forum thread), and all the code related to "tiled" CPU compositor is just never used anymore. The new backend is faster, uses less memory, better matches GPU compositor, etc.

TL;DR: 20 thousand lines of code gone.

This PR:

  • Removes various bits and pieces related to "tiled" compositor (execution groups, one-pixel-at-a-time node processing, read/write buffer operations related to node execution groups).
  • "GPU" (OpenCL) execution device, that was only used by several nodes of the tiled compositor.
    • With that, remove CLEW external library too, since nothing within Blender uses OpenCL directly anymore.

Questions and/or possible future work:

  • It's very likely that I missed more bits that are now "no longer needed". Any obvious ones?
  • The ExecutionModel and CPUDevice inheritance hierarchy could be simplified, since now there's only ever one class doing the work.
  • WorkScheduler / WorkPackage / ThreadingModel could be replaced from bespoke queue to using BLI parallel threading utilities. Seems that some of that already exists (ThreadingModel::Task) but it's not actually used for some reason.
  • CMake: with OpenCL gone, data_to_c is no longer used (only data_to_c_simple), so perhaps it could be removed.
New ("fullframe") CPU compositor backend is being used now (see [forum thread](https://devtalk.blender.org/t/improved-render-compositor-feedback-and-discussion/33377)), and all the code related to "tiled" CPU compositor is just never used anymore. The new backend is faster, uses less memory, better matches GPU compositor, etc. TL;DR: 20 thousand lines of code gone. This PR: - Removes various bits and pieces related to "tiled" compositor (execution groups, one-pixel-at-a-time node processing, read/write buffer operations related to node execution groups). - "GPU" (OpenCL) execution device, that was only used by several nodes of the tiled compositor. - With that, remove CLEW external library too, since nothing within Blender uses OpenCL directly anymore. Questions and/or possible future work: - It's very likely that I missed more bits that are now "no longer needed". Any obvious ones? - The ExecutionModel and CPUDevice inheritance hierarchy could be simplified, since now there's only ever one class doing the work. - WorkScheduler / WorkPackage / ThreadingModel could be replaced from bespoke queue to using BLI parallel threading utilities. Seems that some of that already exists (`ThreadingModel::Task`) but it's not actually used for some reason. - CMake: with OpenCL gone, `data_to_c` is no longer used (only `data_to_c_simple`), so perhaps it could be removed.
👀 3 ❤️ 5 🎉 7
Aras Pranckevicius added 4 commits 2024-02-27 20:34:37 +01:00
5ba39f8e6c Compositor: remove eExecutionModel 
And any branches based on eExecutionModel::Tiled
Aras Pranckevicius added 1 commit 2024-02-27 20:39:27 +01:00
buildbot/vexp-code-patch-lint Build done. Details
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aa0cd7979c Cleanup: remove CLEW, now that it is unused
Aras Pranckevicius added 5 commits 2024-02-28 09:52:50 +01:00
Aras Pranckevicius added 3 commits 2024-02-28 10:48:48 +01:00
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0ab57dce5d Compositor: more small scale removals
Aras Pranckevicius added 1 commit 2024-02-28 11:36:49 +01:00
Aras Pranckevicius added 2 commits 2024-02-28 12:58:42 +01:00
Aras Pranckevicius added 1 commit 2024-02-28 13:03:02 +01:00
Aras Pranckevicius added 1 commit 2024-02-28 13:07:29 +01:00
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4404964ae0 Compositor: small leftovers
Aras Pranckevicius commented 2024-02-28 13:16:01 +01:00
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@blender-bot build

@blender-bot build
Aras Pranckevicius changed title from WIP: Compositor: Remove tiled implementation to WIP: Compositor: Remove now-unused "tiled" implementation 2024-02-28 13:17:06 +01:00
Aras Pranckevicius changed title from WIP: Compositor: Remove now-unused "tiled" implementation to Compositor: Remove now-unused "tiled" implementation 2024-02-28 13:30:54 +01:00
Aras Pranckevicius added this to the Compositing project 2024-02-28 13:31:48 +01:00
Sergey Sharybin reviewed 2024-02-28 14:00:05 +01:00
extern/CMakeLists.txt Outdated
@ -56,7 +56,6 @@ if(WITH_LZMA)
endif()
if(WITH_CYCLES OR WITH_COMPOSITOR_CPU OR WITH_OPENSUBDIV)
Sergey Sharybin commented 2024-02-28 13:58:24 +01:00
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WITH_COMPOSITOR_CPU ca be removed from the condition, as neither CUDA nor HIP are used by compositor.

`WITH_COMPOSITOR_CPU ` ca be removed from the condition, as neither CUDA nor HIP are used by compositor.
aras_p marked this conversation as resolved
Aras Pranckevicius added 2 commits 2024-02-28 16:55:54 +01:00
Aras Pranckevicius merged commit f5f7024040 into main 2024-02-28 16:59:26 +01:00
Aras Pranckevicius deleted branch com_remove_tiled 2024-02-28 16:59:28 +01:00
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