From 9558fa5196033390111a2348caa66ab18b8a4f89 Mon Sep 17 00:00:00 2001
From: Michael Jones <michael_p_jones@apple.com>
Date: Tue, 7 Dec 2021 15:11:35 +0000
Subject: Cycles: Metal host-side code
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This patch adds the Metal host-side code:

- Add all core host-side Metal backend files (device_impl, queue, etc)
- Add MetalRT BVH setup files
- Integrate with Cycles device enumeration code
- Revive `path_source_replace_includes` in util/path (required for MSL compilation)

This patch also includes a couple of small kernel-side fixes:

- Add an implementation of `lgammaf` for Metal [Nemes, Gergő (2010), "New asymptotic expansion for the Gamma function", Archiv der Mathematik](https://users.renyi.hu/~gergonemes/)
- include "work_stealing.h" inside the Metal context class because it accesses state now

Ref T92212

Reviewed By: brecht

Maniphest Tasks: T92212

Differential Revision: https://developer.blender.org/D13423
---
 intern/cycles/blender/addon/ui.py | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'intern/cycles/blender/addon/ui.py')

diff --git a/intern/cycles/blender/addon/ui.py b/intern/cycles/blender/addon/ui.py
index 6fd21db38ae..fd86d75a301 100644
--- a/intern/cycles/blender/addon/ui.py
+++ b/intern/cycles/blender/addon/ui.py
@@ -97,6 +97,11 @@ def use_cpu(context):
     return (get_device_type(context) == 'NONE' or cscene.device == 'CPU')
 
 
+def use_metal(context):
+    cscene = context.scene.cycles
+
+    return (get_device_type(context) == 'METAL' and cscene.device == 'GPU')
+
 def use_cuda(context):
     cscene = context.scene.cycles
 
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