mesa: add intel raytracing support to opencl build

Recently mesa added a patch that allows to cross-compile Intel Vulkan
ray tracing support.

- Backport this patch
- Build and install intel_clc for mesa-native
- Add a dependency on mesa-native to provide intel_clc for target build
- Add a dependency on python3-ply-native as needed to build intel-clc
- Automatically build Intel Vulkan ray tracing support if the opencl
  packageconfig was added

(From OE-Core rev: 25fbe4d1dcfa329f0229eb3ed384b8b84583bd45)

Signed-off-by: Markus Volk <f_l_k@t-online.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 99 insertions, 0 deletions

diff --git a/meta/recipes-graphics/mesa/files/0001-intel-Allow-using-intel_clc-from-the-system.patch b/meta/recipes-graphics/mesa/files/0001-intel-Allow-using-intel_clc-from-the-system.patch
new file mode 100644
index 0000000000..5eefd02068
--- /dev/null
+++ b/meta/recipes-graphics/mesa/files/0001-intel-Allow-using-intel_clc-from-the-system.patch
@@ -0,0 +1,99 @@
+From ac503f5d7bf36f021c576029a64ac1a3199f6b5a Mon Sep 17 00:00:00 2001
+From: Matt Turner <mattst88@gmail.com>
+Date: Thu, 31 Aug 2023 13:16:29 -0400
+Subject: [PATCH] intel: Allow using intel_clc from the system
+
+With -Dintel-clc=system, the build system will search for an `intel_clc`
+binary and use it instead of building `intel_clc` itself.
+
+This allows Intel Vulkan ray tracing support to be built when cross
+compiling without terrible hacks (that would otherwise be necessary due
+to `intel_clc`'s dependence on SPIRV-LLVM-Translator, libclc, clang, and
+LLVM).
+
+Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24983>
+
+Upstream-Status: Backport [https://gitlab.freedesktop.org/mesa/mesa/-/commit/28c1053c07c177854520f6283fa665f17618adb5]
+
+---
+ meson.build                      | 6 +++---
+ meson_options.txt                | 5 ++++-
+ src/intel/compiler/meson.build   | 6 +++++-
+ src/intel/vulkan/grl/meson.build | 2 +-
+ 4 files changed, 13 insertions(+), 6 deletions(-)
+
+diff --git a/meson.build b/meson.build
+index 16e86ec..00a6953 100644
+--- a/meson.build
++++ b/meson.build
+@@ -259,12 +259,12 @@ endif
+ 
+ with_microsoft_clc = get_option('microsoft-clc').enabled()
+ if ['x86_64'].contains(host_machine.cpu_family())
+-  with_intel_clc = get_option('intel-clc').enabled()
+-  with_intel_vk_rt = with_intel_vk and with_intel_clc
++  with_intel_clc = get_option('intel-clc') == 'enabled'
+ else
+   with_intel_clc = false
+-  with_intel_vk_rt = false
+ endif
++with_intel_vk_rt = with_intel_vk and get_option('intel-clc') != 'disabled'
++
+ with_clc = with_microsoft_clc or with_intel_clc
+ with_libclc = with_clc
+ with_spirv_to_dxil = get_option('spirv-to-dxil')
+diff --git a/meson_options.txt b/meson_options.txt
+index 379aea3..9800531 100644
+--- a/meson_options.txt
++++ b/meson_options.txt
+@@ -607,9 +607,12 @@ option(
+ 
+ option(
+   'intel-clc',
+-  type : 'feature',
++  type : 'combo',
+   deprecated: {'true': 'enabled', 'false': 'disabled'},
+   value : 'disabled',
++  choices : [
++    'enabled', 'disabled', 'system',
++  ],
+   description : 'Build the intel-clc compiler (enables Vulkan Intel ' +
+                 'Ray Tracing on supported hardware).'
+ )
+diff --git a/src/intel/compiler/meson.build b/src/intel/compiler/meson.build
+index 9a03d37..774e955 100644
+--- a/src/intel/compiler/meson.build
++++ b/src/intel/compiler/meson.build
+@@ -168,7 +168,10 @@ libintel_compiler = static_library(
+ )
+ 
+ # For now this tool is only going to be used by Anv
+-if with_intel_clc
++if get_option('intel-clc') == 'system'
++  prog_intel_clc = find_program('intel_clc', native : true)
++  dep_prog_intel_clc = []
++elif with_intel_clc
+   prog_intel_clc = executable(
+     'intel_clc',
+     ['intel_clc.c'],
+@@ -181,6 +184,7 @@ if with_intel_clc
+     dependencies : [idep_nir, idep_clc, idep_mesautil, idep_intel_dev],
+     native : true,
+   )
++  dep_prog_intel_clc = [prog_intel_clc]
+ endif
+ 
+ if with_tests
+diff --git a/src/intel/vulkan/grl/meson.build b/src/intel/vulkan/grl/meson.build
+index c0056b3..02a72f5 100644
+--- a/src/intel/vulkan/grl/meson.build
++++ b/src/intel/vulkan/grl/meson.build
+@@ -143,7 +143,7 @@ foreach t : [['125', 'gfx125', 'dg2']]
+                                    # if fixed there
+       ],
+       env: ['MESA_SHADER_CACHE_DISABLE=true'],
+-      depends : [prog_intel_clc]
++      depends : dep_prog_intel_clc
+     )
+   endforeach
+