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Allow desiring higher api versions

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Allows applications to desire_api_version that is
higher than available instance version.
This commit is contained in:
Danderaion 2022-02-21 23:54:36 +02:00 committed by Charles Giessen
parent b1b121efe0
commit 0fa1dd8e20
1 changed files with 7 additions and 9 deletions
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16
src/VkBootstrap.cpp
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@ -577,20 +577,20 @@ detail::Result<Instance> InstanceBuilder::build() const {
auto system = sys_info_ret.value();
uint32_t api_version = VKB_VK_API_VERSION_1_0;
uint32_t instance_version = VKB_VK_API_VERSION_1_0;
if (info.required_api_version > VKB_VK_API_VERSION_1_0 ||
info.desired_api_version > VKB_VK_API_VERSION_1_0) {
PFN_vkEnumerateInstanceVersion pfn_vkEnumerateInstanceVersion =
detail::vulkan_functions().fp_vkEnumerateInstanceVersion;
uint32_t queried_api_version = VKB_VK_API_VERSION_1_0;
if (pfn_vkEnumerateInstanceVersion != nullptr) {
VkResult res = pfn_vkEnumerateInstanceVersion(&queried_api_version);
VkResult res = pfn_vkEnumerateInstanceVersion(&instance_version);
// Should always return VK_SUCCESS
if (res != VK_SUCCESS && info.required_api_version > 0)
return make_error_code(InstanceError::vulkan_version_unavailable);
}
if (pfn_vkEnumerateInstanceVersion == nullptr || queried_api_version < info.required_api_version) {
if (pfn_vkEnumerateInstanceVersion == nullptr || instance_version < info.required_api_version) {
if (VK_VERSION_MINOR(info.required_api_version) == 2)
return make_error_code(InstanceError::vulkan_version_1_2_unavailable);
else if (VK_VERSION_MINOR(info.required_api_version))
@ -600,11 +600,9 @@ detail::Result<Instance> InstanceBuilder::build() const {
}
if (info.required_api_version > VKB_VK_API_VERSION_1_0) {
api_version = info.required_api_version;
} else if (info.desired_api_version > VKB_VK_API_VERSION_1_0) {
if (queried_api_version >= info.desired_api_version)
api_version = info.desired_api_version;
else
api_version = queried_api_version;
}
if (info.desired_api_version > api_version && instance_version >= VKB_VK_API_VERSION_1_1){
api_version = info.desired_api_version;
}
}
@ -746,7 +744,7 @@ detail::Result<Instance> InstanceBuilder::build() const {
instance.headless = info.headless_context;
instance.supports_properties2_ext = supports_properties2_ext;
instance.allocation_callbacks = info.allocation_callbacks;
instance.instance_version = api_version;
instance.instance_version = instance_version;
instance.fp_vkGetInstanceProcAddr = detail::vulkan_functions().ptr_vkGetInstanceProcAddr;
instance.fp_vkGetDeviceProcAddr = detail::vulkan_functions().fp_vkGetDeviceProcAddr;
return instance;