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vulkan: add MwVulkanSupported for telegraphing whether vulkan is avaliable on the user's computer

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git-svn-id: http://svn2.nishi.boats/svn/milsko/trunk@120 b9cfdab3-6d41-4d17-bbe4-086880011989
This commit is contained in:
IoIxD
2025-10-01 23:09:38 +00:00
parent cc9a63b67e
commit ddaaa37039
3 changed files with 59 additions and 8 deletions
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5
examples/vulkan.c
View File

@@ -627,6 +627,11 @@ void vulkan_setup(MwWidget handle) {
}
int main() {
if(!MwVulkanSupported()) {
printf("Vulkan not found or unsupported on target platform.\n");
return 1;
}
window = MwVaCreateWidget(MwWindowClass, "main", NULL, 0, 0, 400, 450,
MwNtitle, "hello world",
NULL);

5
include/Mw/Vulkan.h
View File

@@ -117,6 +117,11 @@ typedef enum MwVulkanField_T {
*/
MWDECL void* MwVulkanGetField(MwWidget handle, MwVulkanField field, MwErrorEnum* out);
/*!
* %brief Return whether Vulkan is installed on the target platform.
*/
MWDECL VkBool32 MwVulkanSupported();
#ifdef __cplusplus
}
#endif

57
src/widget/vulkan.c
View File

@@ -46,6 +46,12 @@ MwVulkanConfig vulkan_config = {
.validation_layers = VK_FALSE,
};
#ifndef _WIN32
#define LIB_TYPE void*
#else
#define LIB_TYPE HINSTANCE
#endif
// convienence macro for handling vulkan errors
#ifndef __MINGW32__
#define VK_CMD(func) \
@@ -78,12 +84,16 @@ MwVulkanConfig vulkan_config = {
const char** enabledExtensions;
const char** enabledLayers;
typedef enum vulkan_supported_state_t {
VULKAN_SUPPORTED_UNKNOWN,
VULKAN_SUPPORTED_YES,
VULKAN_SUPPORTED_NO,
} vulkan_supported_state;
vulkan_supported_state vulkan_supported = VULKAN_SUPPORTED_UNKNOWN;
typedef struct vulkan {
#ifdef _WIN32
HMODULE vulkanLibrary;
#else
void* vulkanLibrary;
#endif
LIB_TYPE vulkanLibrary;
PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr;
VkInstance vkInstance;
VkSurfaceKHR vkSurface;
@@ -138,6 +148,14 @@ static void destroy(MwWidget handle) {
free(o);
}
static LIB_TYPE vulkan_lib_load() {
#ifndef _WIN32
return dlopen("libvulkan.so", RTLD_LAZY | RTLD_GLOBAL);
#else
return LoadLibrary("vulkan-1.dll");
#endif
}
static MwErrorEnum vulkan_instance_setup(MwWidget handle, vulkan_t* o) {
uint32_t vulkan_version = vulkan_config.vk_version;
uint32_t api_version = vulkan_config.api_version;
@@ -159,9 +177,16 @@ static MwErrorEnum vulkan_instance_setup(MwWidget handle, vulkan_t* o) {
VkResult vk_res;
// Load Vulkan and any other function pointers we need.
// Load Vulkan and any other function pointers we need.
o->vulkanLibrary = vulkan_lib_load();
if(!o->vulkanLibrary) {
vulkan_supported = VULKAN_SUPPORTED_NO;
setLastError("Vulkan not found.");
} else {
vulkan_supported = VULKAN_SUPPORTED_YES;
}
#ifndef _WIN32
o->vulkanLibrary = dlopen("libvulkan.so", RTLD_LAZY | RTLD_GLOBAL);
o->vkGetInstanceProcAddr = dlsym(o->vulkanLibrary, "vkGetInstanceProcAddr");
VK_ASSERT(o->vkGetInstanceProcAddr);
_vkEnumerateInstanceExtensionProperties = dlsym(o->vulkanLibrary, "vkEnumerateInstanceExtensionProperties");
@@ -171,7 +196,6 @@ static MwErrorEnum vulkan_instance_setup(MwWidget handle, vulkan_t* o) {
_vkCreateInstance = dlsym(o->vulkanLibrary, "vkCreateInstance");
VK_ASSERT(_vkCreateInstance);
#else
o->vulkanLibrary = LoadLibrary("vulkan-1.dll");
o->vkGetInstanceProcAddr = (PFN_vkGetInstanceProcAddr)(void*)GetProcAddress(o->vulkanLibrary, "vkGetInstanceProcAddr");
VK_ASSERT(o->vkGetInstanceProcAddr);
_vkEnumerateInstanceExtensionProperties = (PFN_vkEnumerateInstanceExtensionProperties)(void*)GetProcAddress(o->vulkanLibrary, "vkEnumerateInstanceExtensionProperties");
@@ -440,6 +464,23 @@ void* MwVulkanGetField(MwWidget handle, MwVulkanField field, MwErrorEnum* out) {
}
};
VkBool32 MwVulkanSupported() {
if(vulkan_supported == VULKAN_SUPPORTED_UNKNOWN) {
LIB_TYPE lib = vulkan_lib_load();
if(lib == NULL) {
vulkan_supported = VULKAN_SUPPORTED_NO;
} else {
vulkan_supported = VULKAN_SUPPORTED_YES;
dlclose(lib);
}
}
if(vulkan_supported == VULKAN_SUPPORTED_YES) {
return VK_TRUE;
} else {
return VK_FALSE;
}
};
MwClassRec MwVulkanClassRec = {
create, /* create */
destroy, /* destroy */