From a2d6a5f88528ea4cacb9fc981c060e4613089229 Mon Sep 17 00:00:00 2001
From: Duncan Hopkins <duncan@thefoundry.co.uk>
Date: Wed, 2 Jun 2021 10:28:32 +0100
Subject: [PATCH] zink: Fix MacOS compiling issues

Add a moltenvk-dir build option to supply the MacOS Vulkan SDK MoltenVK location.
Force compiler, for zink only, into object-c mode when MoltenVK is used to allow for the MacOS ioSurface and CAMetalLayer types that the headers expose.

Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11129>
---
 meson.build                              |  1 +
 meson_options.txt                        |  6 ++++++
 src/gallium/drivers/zink/meson.build     | 11 ++++++++++-
 src/gallium/drivers/zink/zink_batch.c    |  3 +++
 src/gallium/drivers/zink/zink_resource.c |  3 +++
 5 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/meson.build b/meson.build
index 00bf9cc1456..33db495afcc 100644
--- a/meson.build
+++ b/meson.build
@@ -51,6 +51,7 @@ pre_args = [
 c_args = []
 cpp_args = []
 
+with_moltenvk_dir = get_option('moltenvk-dir')
 with_vulkan_icd_dir = get_option('vulkan-icd-dir')
 with_tests = get_option('build-tests')
 with_aco_tests = get_option('build-aco-tests')
diff --git a/meson_options.txt b/meson_options.txt
index fa6a9809e11..11feb3f6763 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -223,6 +223,12 @@ option(
   value : '',
   description : 'Location relative to prefix to put vulkan icds on install. Default: $datadir/vulkan/icd.d'
 )
+option(
+  'moltenvk-dir',
+  type : 'string',
+  value : '',
+  description : 'Location of the MoltenVk SDK. Default: '
+)
 option(
   'vulkan-layers',
   type : 'array',
diff --git a/src/gallium/drivers/zink/meson.build b/src/gallium/drivers/zink/meson.build
index dc029088fdb..90f743ca6eb 100644
--- a/src/gallium/drivers/zink/meson.build
+++ b/src/gallium/drivers/zink/meson.build
@@ -74,15 +74,24 @@ zink_nir_algebraic_c = custom_target(
 )
 
 zink_c_args = []
+inc_zink_vk = []
+
 if with_swrast_vk
   zink_c_args += '-DZINK_WITH_SWRAST_VK'
 endif
 
+# MoltenVK options
+if with_moltenvk_dir != ''
+  inc_zink_vk  = [inc_zink_vk, include_directories( join_paths(with_moltenvk_dir, 'include') )]
+  zink_c_args += ['-x','objective-c'] # Put compiler into objective-C mode to allow for MacOS types, like IOSurface and CAMetalLayer
+  zink_c_args += ['-iframework' , 'Foundation']
+endif
+
 libzink = static_library(
   'zink',
   [files_libzink, zink_device_info, zink_instance, zink_nir_algebraic_c],
   gnu_symbol_visibility : 'hidden',
-  include_directories : [inc_include, inc_src, inc_mapi, inc_mesa, inc_gallium, inc_gallium_aux, inc_vulkan_wsi, inc_vulkan_util],
+  include_directories : [inc_include, inc_src, inc_mapi, inc_mesa, inc_gallium, inc_gallium_aux, inc_vulkan_wsi, inc_vulkan_util, inc_zink_vk],
   dependencies: [dep_vulkan, idep_nir_headers, idep_mesautil],
   c_args: zink_c_args,
 )
diff --git a/src/gallium/drivers/zink/zink_batch.c b/src/gallium/drivers/zink/zink_batch.c
index 846a91f5424..799ba1a4cf4 100644
--- a/src/gallium/drivers/zink/zink_batch.c
+++ b/src/gallium/drivers/zink/zink_batch.c
@@ -14,6 +14,9 @@
 #include "util/u_debug.h"
 #include "util/set.h"
 
+#ifdef VK_USE_PLATFORM_METAL_EXT
+#include "QuartzCore/CAMetalLayer.h"
+#endif
 #include "wsi_common.h"
 
 void
diff --git a/src/gallium/drivers/zink/zink_resource.c b/src/gallium/drivers/zink/zink_resource.c
index 60db3c8a15d..1e811f6703d 100644
--- a/src/gallium/drivers/zink/zink_resource.c
+++ b/src/gallium/drivers/zink/zink_resource.c
@@ -29,6 +29,9 @@
 #include "zink_program.h"
 #include "zink_screen.h"
 
+#ifdef VK_USE_PLATFORM_METAL_EXT
+#include "QuartzCore/CAMetalLayer.h"
+#endif
 #include "vulkan/wsi/wsi_common.h"
 
 #include "util/slab.h"