Refactor entry with an entry loader
This commit is contained in:
parent
efd6f906d9
commit
47420b1c1e
17
src/entry.rs
17
src/entry.rs
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@ -7,7 +7,7 @@ use shared_library::dynamic_library::DynamicLibrary;
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use std::path::Path;
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use std::path::Path;
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use ::RawPtr;
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use ::RawPtr;
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use std::marker::PhantomData;
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use std::marker::PhantomData;
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use version::{FunctionPointers, V1_0, InstanceFpV1_0, InstanceLoader};
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use version::{FunctionPointers, V1_0, InstanceFpV1_0, InstanceLoader, EntryLoader};
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#[cfg(windows)]
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#[cfg(windows)]
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fn get_path() -> &'static Path {
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fn get_path() -> &'static Path {
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@ -31,7 +31,7 @@ lazy_static!{
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#[derive(Clone)]
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#[derive(Clone)]
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pub struct Entry<V: FunctionPointers> {
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pub struct Entry<V: FunctionPointers> {
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static_fn: vk::StaticFn,
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static_fn: vk::StaticFn,
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entry_fn: vk::EntryFn,
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entry_fn: V::EntryFp,
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_v: PhantomData<V>,
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_v: PhantomData<V>,
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}
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}
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@ -47,7 +47,6 @@ pub enum InstanceError {
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LoadError(Vec<&'static str>),
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LoadError(Vec<&'static str>),
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VkError(vk::Result),
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VkError(vk::Result),
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}
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}
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impl<V: FunctionPointers> Entry<V> {
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impl<V: FunctionPointers> Entry<V> {
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pub fn create_instance(&self,
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pub fn create_instance(&self,
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create_info: &vk::InstanceCreateInfo,
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create_info: &vk::InstanceCreateInfo,
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@ -55,7 +54,8 @@ impl<V: FunctionPointers> Entry<V> {
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-> Result<Instance<V>, InstanceError> {
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-> Result<Instance<V>, InstanceError> {
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unsafe {
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unsafe {
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let mut instance: vk::Instance = mem::uninitialized();
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let mut instance: vk::Instance = mem::uninitialized();
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let err_code = self.entry_fn.create_instance(create_info,
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let err_code =
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self.entry_fn.fp_v1_0().create_instance(create_info,
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allocation_callbacks.as_raw_ptr(),
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allocation_callbacks.as_raw_ptr(),
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&mut instance);
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&mut instance);
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if err_code != vk::Result::Success {
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if err_code != vk::Result::Success {
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@ -80,9 +80,7 @@ impl<V: FunctionPointers> Entry<V> {
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}
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}
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Err(ref err) => Err(LoadingError::LibraryLoadError(err.clone())),
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Err(ref err) => Err(LoadingError::LibraryLoadError(err.clone())),
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}?;
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}?;
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let entry_fn = vk::EntryFn::load(|name| unsafe {
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let entry_fn = unsafe { V::EntryFp::load(&static_fn).unwrap() };
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mem::transmute(static_fn.get_instance_proc_addr(vk::Instance::null(), name.as_ptr()))
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}).map_err(|err| LoadingError::EntryLoadError(err))?;
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Ok(Entry {
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Ok(Entry {
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static_fn: static_fn,
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static_fn: static_fn,
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entry_fn: entry_fn,
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entry_fn: entry_fn,
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@ -93,10 +91,11 @@ impl<V: FunctionPointers> Entry<V> {
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pub fn enumerate_instance_layer_properties(&self) -> VkResult<Vec<vk::LayerProperties>> {
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pub fn enumerate_instance_layer_properties(&self) -> VkResult<Vec<vk::LayerProperties>> {
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unsafe {
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unsafe {
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let mut num = 0;
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let mut num = 0;
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self.entry_fn.enumerate_instance_layer_properties(&mut num, ptr::null_mut());
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self.entry_fn.fp_v1_0().enumerate_instance_layer_properties(&mut num, ptr::null_mut());
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let mut v = Vec::with_capacity(num as usize);
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let mut v = Vec::with_capacity(num as usize);
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let err_code = self.entry_fn
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let err_code = self.entry_fn
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.fp_v1_0()
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.enumerate_instance_layer_properties(&mut num, v.as_mut_ptr());
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.enumerate_instance_layer_properties(&mut num, v.as_mut_ptr());
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v.set_len(num as usize);
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v.set_len(num as usize);
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match err_code {
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match err_code {
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@ -111,9 +110,11 @@ impl<V: FunctionPointers> Entry<V> {
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unsafe {
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unsafe {
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let mut num = 0;
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let mut num = 0;
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self.entry_fn
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self.entry_fn
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.fp_v1_0()
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.enumerate_instance_extension_properties(ptr::null(), &mut num, ptr::null_mut());
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.enumerate_instance_extension_properties(ptr::null(), &mut num, ptr::null_mut());
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let mut data = Vec::with_capacity(num as usize);
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let mut data = Vec::with_capacity(num as usize);
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let err_code = self.entry_fn
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let err_code = self.entry_fn
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.fp_v1_0()
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.enumerate_instance_extension_properties(ptr::null(), &mut num, data.as_mut_ptr());
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.enumerate_instance_extension_properties(ptr::null(), &mut num, data.as_mut_ptr());
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data.set_len(num as usize);
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data.set_len(num as usize);
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match err_code {
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match err_code {
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@ -5,6 +5,7 @@ use std::mem;
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pub trait FunctionPointers {
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pub trait FunctionPointers {
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type InstanceFp: InstanceLoader;
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type InstanceFp: InstanceLoader;
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type DeviceFp: DeviceLoader;
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type DeviceFp: DeviceLoader;
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type EntryFp: EntryLoader;
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}
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}
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#[allow(non_camel_case_types)]
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#[allow(non_camel_case_types)]
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@ -12,6 +13,7 @@ pub struct V1_0;
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impl FunctionPointers for V1_0 {
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impl FunctionPointers for V1_0 {
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type InstanceFp = InstanceFpV1_0;
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type InstanceFp = InstanceFpV1_0;
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type DeviceFp = DeviceFpV1_0;
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type DeviceFp = DeviceFpV1_0;
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type EntryFp = EntryFpV1_0;
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}
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}
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#[allow(non_camel_case_types)]
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#[allow(non_camel_case_types)]
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@ -19,6 +21,28 @@ pub struct InstanceFpV1_0 {
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pub instance_fn: vk::InstanceFnV1_0,
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pub instance_fn: vk::InstanceFnV1_0,
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}
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}
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#[allow(non_camel_case_types)]
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pub struct EntryFpV1_0 {
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pub entry_fn: vk::EntryFnV1_0,
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}
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impl EntryLoader for EntryFpV1_0 {
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fn fp_v1_0(&self) -> &vk::EntryFnV1_0 {
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&self.entry_fn
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}
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unsafe fn load(static_fn: &vk::StaticFn) -> Result<Self, Vec<&'static str>> {
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let entry_fn = vk::EntryFnV1_0::load(|name| {
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mem::transmute(static_fn.get_instance_proc_addr(vk::Instance::null(), name.as_ptr()))
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})?;
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Ok(EntryFpV1_0 { entry_fn: entry_fn })
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}
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}
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pub trait EntryLoader: Sized {
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fn fp_v1_0(&self) -> &vk::EntryFnV1_0;
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unsafe fn load(static_fn: &vk::StaticFn) -> Result<Self, Vec<&'static str>>;
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}
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pub trait InstanceLoader: Sized {
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pub trait InstanceLoader: Sized {
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fn fp_v1_0(&self) -> &vk::InstanceFnV1_0;
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fn fp_v1_0(&self) -> &vk::InstanceFnV1_0;
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unsafe fn load(static_fn: &vk::StaticFn,
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unsafe fn load(static_fn: &vk::StaticFn,
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@ -3711,7 +3711,7 @@ vk_functions!{
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}
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}
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vk_functions!{
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vk_functions!{
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EntryFn,
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EntryFnV1_0,
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"vkCreateInstance", create_instance(
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"vkCreateInstance", create_instance(
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p_create_info: *const InstanceCreateInfo,
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p_create_info: *const InstanceCreateInfo,
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p_allocator: *const AllocationCallbacks,
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p_allocator: *const AllocationCallbacks,
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