Cycles: Add support for rendering on Intel GPUs using oneAPI

This patch adds a new Cycles device with similar functionality to the
existing GPU devices.  Kernel compilation and runtime interaction happen
via oneAPI DPC++ compiler and SYCL API.

This implementation is primarly focusing on Intel® Arc™ GPUs and other
future Intel GPUs.  The first supported drivers are 101.1660 on Windows
and 22.10.22597 on Linux.

The necessary tools for compilation are:
- A SYCL compiler such as oneAPI DPC++ compiler or
  https://github.com/intel/llvm
- Intel® oneAPI Level Zero which is used for low level device queries:
  https://github.com/oneapi-src/level-zero
- To optionally generate prebuilt graphics binaries: Intel® Graphics
  Compiler All are included in Linux precompiled libraries on svn:
  https://svn.blender.org/svnroot/bf-blender/trunk/lib The same goes for
  Windows precompiled binaries but for the graphics compiler, available
  as "Intel® Graphics Offline Compiler for OpenCL™ Code" from
  https://www.intel.com/content/www/us/en/developer/articles/tool/oneapi-standalone-components.html,
  for which path can be set as OCLOC_INSTALL_DIR.

Being based on the open SYCL standard, this implementation could also be
extended to run on other compatible non-Intel hardware in the future.

Reviewed By: sergey, brecht

Differential Revision: https://developer.blender.org/D15254

Co-authored-by: Nikita Sirgienko <nikita.sirgienko@intel.com>
Co-authored-by: Stefan Werner <stefan.werner@intel.com>

1 files changed, 21 insertions, 5 deletions

diff --git a/intern/cycles/blender/addon/properties.py b/intern/cycles/blender/addon/properties.py
index 17f05f6da34..7d7ca78c15a 100644
--- a/intern/cycles/blender/addon/properties.py
+++ b/intern/cycles/blender/addon/properties.py
@@ -118,7 +118,8 @@ enum_device_type = (
     ('CUDA', "CUDA", "CUDA", 1),
     ('OPTIX', "OptiX", "OptiX", 3),
     ('HIP', "HIP", "HIP", 4),
-    ('METAL', "Metal", "Metal", 5)
+    ('METAL', "Metal", "Metal", 5),
+    ('ONEAPI', "oneAPI", "oneAPI", 6)
 )
 
 enum_texture_limit = (
@@ -1397,7 +1398,8 @@ class CyclesPreferences(bpy.types.AddonPreferences):
 
     def get_device_types(self, context):
         import _cycles
-        has_cuda, has_optix, has_hip, has_metal = _cycles.get_device_types()
+        has_cuda, has_optix, has_hip, has_metal, has_oneapi = _cycles.get_device_types()
+
         list = [('NONE', "None", "Don't use compute device", 0)]
         if has_cuda:
             list.append(('CUDA', "CUDA", "Use CUDA for GPU acceleration", 1))
@@ -1407,6 +1409,8 @@ class CyclesPreferences(bpy.types.AddonPreferences):
             list.append(('HIP', "HIP", "Use HIP for GPU acceleration", 4))
         if has_metal:
             list.append(('METAL', "Metal", "Use Metal for GPU acceleration", 5))
+        if has_oneapi:
+            list.append(('ONEAPI', "oneAPI", "Use oneAPI for GPU acceleration", 6))
 
         return list
 
@@ -1438,7 +1442,7 @@ class CyclesPreferences(bpy.types.AddonPreferences):
 
     def update_device_entries(self, device_list):
         for device in device_list:
-            if not device[1] in {'CUDA', 'OPTIX', 'CPU', 'HIP', 'METAL'}:
+            if not device[1] in {'CUDA', 'OPTIX', 'CPU', 'HIP', 'METAL', 'ONEAPI'}:
                 continue
             # Try to find existing Device entry
             entry = self.find_existing_device_entry(device)
@@ -1482,7 +1486,7 @@ class CyclesPreferences(bpy.types.AddonPreferences):
         import _cycles
         # Ensure `self.devices` is not re-allocated when the second call to
         # get_devices_for_type is made, freeing items from the first list.
-        for device_type in ('CUDA', 'OPTIX', 'HIP', 'METAL'):
+        for device_type in ('CUDA', 'OPTIX', 'HIP', 'METAL', 'ONEAPI'):
             self.update_device_entries(_cycles.available_devices(device_type))
 
     # Deprecated: use refresh_devices instead.
@@ -1550,13 +1554,25 @@ class CyclesPreferences(bpy.types.AddonPreferences):
                 elif sys.platform.startswith("linux"):
                     col.label(text="Requires AMD GPU with Vega or RDNA architecture", icon='BLANK1')
                     col.label(text="and AMD driver version 22.10 or newer", icon='BLANK1')
+            elif device_type == 'ONEAPI':
+                import sys
+                col.label(text="Requires Intel GPU with Xe-HPG architecture", icon='BLANK1')
+                if sys.platform.startswith("win"):
+                    col.label(text="and Windows driver version 101.1660 or newer", icon='BLANK1')
+                elif sys.platform.startswith("linux"):
+                    col.label(text="and Linux driver version xx.xx.20066 or newer", icon='BLANK1')
             elif device_type == 'METAL':
                 col.label(text="Requires Apple Silicon with macOS 12.2 or newer", icon='BLANK1')
                 col.label(text="or AMD with macOS 12.3 or newer", icon='BLANK1')
             return
 
         for device in devices:
-            box.prop(device, "use", text=device.name)
+            import unicodedata
+            box.prop(device, "use", text=device.name
+                    .replace('(TM)', unicodedata.lookup('TRADE MARK SIGN'))
+                    .replace('(R)', unicodedata.lookup('REGISTERED SIGN'))
+                    .replace('(C)', unicodedata.lookup('COPYRIGHT SIGN'))
+                    )
 
     def draw_impl(self, layout, context):
         row = layout.row()