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runtime (macOS): with a layer asked for, the loader is pinned to our MoltenVK whatever the shell set - the SDK's setup-env.sh exports VK_DRIVER_FILES and VK_ICD_FILENAMES at its own, and the one left set loaded a second MoltenVK; VK_DRIVER_FILES overwritten, VK_ICD_FILENAMES cleared, R3D_VK_ANY_DRIVER=1 to keep the shell's

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-30 00:47:07 +03:00
parent 47ba741f6d
commit 01df9b9d77
2 changed files with 18 additions and 9 deletions
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20
runtime/native/vk_mac.ll
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@ -50,6 +50,7 @@ entry:
declare i32 @dladdr(ptr, ptr)
declare i32 @setenv(ptr, ptr, i32)
declare i32 @unsetenv(ptr)
declare ptr @strrchr(ptr, i32)
declare i32 @access(ptr, i32)
@.lvk_e1 = private unnamed_addr constant [19 x i8] c"VK_INSTANCE_LAYERS\00"
@ -57,6 +58,7 @@ declare i32 @access(ptr, i32)
@.lvk_e3 = private unnamed_addr constant [14 x i8] c"R3D_VK_LOADER\00"
@.lvk_df = private unnamed_addr constant [16 x i8] c"VK_DRIVER_FILES\00"
@.lvk_if = private unnamed_addr constant [17 x i8] c"VK_ICD_FILENAMES\00"
@.lvk_any = private unnamed_addr constant [18 x i8] c"R3D_VK_ANY_DRIVER\00"
@.lvk_gipa = private unnamed_addr constant [22 x i8] c"vkGetInstanceProcAddr\00"
@.lvk_icd = private unnamed_addr constant [23 x i8] c"%.*s/MoltenVK_icd.json\00"
@ -76,16 +78,15 @@ entry:
}
; The loader told to use our MoltenVK and no other: VK_DRIVER_FILES set to the ICD json beside the
; libMoltenVK.dylib the program is linked against (found through dladdr), unless the caller named a
; driver already, or there is no json there (a bundle ships none).
; libMoltenVK.dylib the program is linked against (found through dladdr), over whatever the shell had -
; the SDK's setup-env.sh exports both VK_DRIVER_FILES and VK_ICD_FILENAMES at its own MoltenVK, and a
; validation run must see the driver the game uses - and VK_ICD_FILENAMES cleared. R3D_VK_ANY_DRIVER=1
; leaves the shell's choice alone; nothing is set where there is no json (a bundle ships none).
define internal void @lvk_pin_icd() {
entry:
%df = call ptr @getenv(ptr @.lvk_df)
%if = call ptr @getenv(ptr @.lvk_if)
%hdf = icmp ne ptr %df, null
%hif = icmp ne ptr %if, null
%named = or i1 %hdf, %hif
br i1 %named, label %out, label %find
%any = call ptr @getenv(ptr @.lvk_any)
%keep = icmp ne ptr %any, null
br i1 %keep, label %out, label %find
find:
%h = call ptr @dlopen(ptr @.lvk_mr, i32 6)
%noh = icmp eq ptr %h, null
@ -115,7 +116,8 @@ json:
%there = icmp eq i32 %acc, 0
br i1 %there, label %pin, label %out
pin:
%s = call i32 @setenv(ptr @.lvk_df, ptr %buf, i32 0)
%s = call i32 @setenv(ptr @.lvk_df, ptr %buf, i32 1)
%u = call i32 @unsetenv(ptr @.lvk_if)
br label %out
out:
ret void