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Support official Vulkan SDK for macOS.

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This tries to load vulkan.framework or libvulkan.1.dylib before MoltenVK.framework
or libMoltenVK.dylib. In the previous version, layers would not work for applications
run-time loading the default library.
This commit is contained in:
Mark Callow
2018-02-25 23:02:09 -08:00
parent f9f45d0bf5
commit be6ca785e3
2 changed files with 59 additions and 24 deletions
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44
src/video/cocoa/SDL_cocoavulkan.m
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@@ -39,7 +39,13 @@
#include <dlfcn.h>
#define DEFAULT_MOLTENVK "libMoltenVK.dylib"
const char* defaultPaths[] = {
"vulkan.framework/vulkan",
"libvulkan.1.dylib",
"MoltenVK.framework/MoltenVK",
"libMoltenVK.dylib"
};
/* Since libSDL is most likely a .dylib, need RTLD_DEFAULT not RTLD_SELF. */
#define DEFAULT_HANDLE RTLD_DEFAULT
@@ -52,7 +58,7 @@ int Cocoa_Vulkan_LoadLibrary(_THIS, const char *path)
PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr = NULL;
if (_this->vulkan_config.loader_handle) {
SDL_SetError("MoltenVK/Vulkan already loaded");
SDL_SetError("Vulkan/MoltenVK already loaded");
return -1;
}
@@ -60,6 +66,7 @@ int Cocoa_Vulkan_LoadLibrary(_THIS, const char *path)
if (!path) {
path = SDL_getenv("SDL_VULKAN_LIBRARY");
}
if (!path) {
/* MoltenVK framework, currently, v0.17.0, has a static library and is
* the recommended way to use the package. There is likely no object to
@@ -68,20 +75,35 @@ int Cocoa_Vulkan_LoadLibrary(_THIS, const char *path)
(PFN_vkGetInstanceProcAddr)dlsym(DEFAULT_HANDLE,
"vkGetInstanceProcAddr");
}
if (vkGetInstanceProcAddr) {
_this->vulkan_config.loader_handle = DEFAULT_HANDLE;
} else {
if (!path) {
/* Look for the .dylib packaged with the application instead. */
path = DEFAULT_MOLTENVK;
const char** paths;
int numPaths;
int i;
if (path) {
paths = &path;
numPaths = 1;
} else {
/* Look for framework or .dylib packaged with the application
* instead. */
paths = defaultPaths;
numPaths = SDL_arraysize(defaultPaths);
}
_this->vulkan_config.loader_handle = SDL_LoadObject(path);
if (!_this->vulkan_config.loader_handle) {
return -1;
for (i=0; i < numPaths; i++) {
_this->vulkan_config.loader_handle = SDL_LoadObject(paths[i]);
if (_this->vulkan_config.loader_handle)
break;
else
continue;
}
SDL_strlcpy(_this->vulkan_config.loader_path, path,
if (i == numPaths)
return -1;
SDL_strlcpy(_this->vulkan_config.loader_path, paths[i],
SDL_arraysize(_this->vulkan_config.loader_path));
vkGetInstanceProcAddr = (PFN_vkGetInstanceProcAddr)SDL_LoadFunction(
_this->vulkan_config.loader_handle, "vkGetInstanceProcAddr");
@@ -90,7 +112,7 @@ int Cocoa_Vulkan_LoadLibrary(_THIS, const char *path)
if (!vkGetInstanceProcAddr) {
SDL_SetError("Failed to find %s in either executable or %s: %s",
"vkGetInstanceProcAddr",
DEFAULT_MOLTENVK,
_this->vulkan_config.loader_path,
(const char *) dlerror());
goto fail;
}