Don't link against the Vulkan loader, load it at runtime.

CMakeLists.txt

@@ -595,6 +595,7 @@ set(VK-Source
 	${REF_SRC_DIR}/vk/vk_validation.c
 	${REF_SRC_DIR}/vk/vk_warp.c
 	${REF_SRC_DIR}/vk/vk_util.c
+	${REF_SRC_DIR}/vk/volk/volk.c
 	${REF_SRC_DIR}/files/pcx.c
 	${REF_SRC_DIR}/files/stb.c
 	${REF_SRC_DIR}/files/wal.c

Makefile

@@ -649,14 +649,14 @@ ref_vk:
 	@echo "===> Building ref_vk.dll"
 	$(MAKE) release/ref_vk.dll
 
-release/ref_vk.dll : LDFLAGS += -shared -lvulkan
+release/ref_vk.dll : LDFLAGS += -shared
 else
 ref_vk:
 	@echo "===> Building ref_vk.so"
 	$(MAKE) release/ref_vk.so
 
 release/ref_vk.so : CFLAGS += -fPIC
-release/ref_vk.so : LDFLAGS += -shared -lvulkan
+release/ref_vk.so : LDFLAGS += -shared
 endif
 
 build/ref_vk/%.o: %.c
@@ -969,6 +969,7 @@ REFVK_OBJS_ := \
 	src/client/refresh/vk/vk_validation.o \
 	src/client/refresh/vk/vk_warp.o \
 	src/client/refresh/vk/vk_util.o \
+	src/client/refresh/vk/volk/volk.o \
 	src/client/refresh/files/pcx.o \
 	src/client/refresh/files/stb.o \
 	src/client/refresh/files/wal.o \

src/client/refresh/vk/header/local.h

@@ -21,16 +21,15 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #ifndef __VK_LOCAL_H__
 #define __VK_LOCAL_H__
 
+#include <math.h>
 #include <stdio.h>
 
 #include <SDL2/SDL.h>
 #include <SDL2/SDL_vulkan.h>
 
-#include <vulkan/vulkan.h>
-#include <math.h>
 
 #include "../../ref_shared.h"
-
+#include "../volk/volk.h"
 #include "qvk.h"
 
 // verify if VkResult is VK_SUCCESS

src/client/refresh/vk/header/qvk.h

@@ -29,7 +29,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #  include <windows.h>
 #endif
 
-#include <vulkan/vulkan.h>
+#include "local.h"
 #include "util.h"
 #include "shaders.h"
 

src/client/refresh/vk/header/util.h

@@ -19,7 +19,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #ifndef  __VK_UTIL_H__
 #define  __VK_UTIL_H__
 
-#include <vulkan/vulkan.h>
+#include "../volk/volk.h"
 
 #define ROUNDUP(a, b) (((a) + ((b)-1)) & ~((b)-1))
 

src/client/refresh/vk/vk_common.c

@@ -1701,6 +1701,8 @@ qboolean QVk_Init(SDL_Window *window)
 	VkResult res = vkCreateInstance(&createInfo, NULL, &vk_instance);
 	free(wantedExtensions);
 
+	volkLoadInstance(vk_instance);
+
 	if (res != VK_SUCCESS)
 	{
 		R_Printf(PRINT_ALL, "%s(): Could not create Vulkan instance: %s\n", __func__, QVk_GetError(res));

src/client/refresh/vk/vk_rmain.c

@@ -1601,13 +1601,13 @@ R_IsVsyncActive(void)
 
 static int R_PrepareForWindow(void)
 {
-#if defined(_WIN32)
-	if (SDL_Vulkan_LoadLibrary("libvulkan-1.dll"))
+	if (SDL_Vulkan_LoadLibrary(NULL))
 	{
-		R_Printf(PRINT_ALL, "%s() Loader import failed: %s",
-				__func__, SDL_GetError());
+		R_Printf(PRINT_ALL, "%s() Loader import failed: %s", __func__, SDL_GetError());
 	}
-#endif
+
+	volkInitializeCustom(SDL_Vulkan_GetVkGetInstanceProcAddr());
+
 	return SDL_WINDOW_VULKAN;
 }