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"Staging buffer: Abstracting buffer creation"

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TODO: "Staging buffer: Using a staging buffer" and etc.
https://vulkan-tutorial.com/Vertex_buffers/Staging_buffer
This commit is contained in:
Stephen Seo 2024-03-18 12:03:04 +09:00
parent 9b5a011afc
commit 3e12361e85
1 changed files with 68 additions and 54 deletions
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122
src/main.rs
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@ -1609,63 +1609,17 @@ impl VulkanApp {
}
fn create_vertex_buffer(&mut self) -> Result<(), String> {
let mut buffer_info: ffi::VkBufferCreateInfo = unsafe { std::mem::zeroed() };
buffer_info.sType = ffi::VkStructureType_VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
buffer_info.size = (std::mem::size_of::<Vertex>() * VERTICES.len()) as u64;
buffer_info.usage = ffi::VkBufferUsageFlagBits_VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
buffer_info.sharingMode = ffi::VkSharingMode_VK_SHARING_MODE_EXCLUSIVE;
let result = unsafe {
ffi::vkCreateBuffer(
self.device,
std::ptr::addr_of!(buffer_info),
std::ptr::null(),
std::ptr::addr_of_mut!(self.vertex_buffer),
)
};
if result != ffi::VkResult_VK_SUCCESS {
return Err(String::from("Failed to create vertex buffer!"));
}
let mut mem_reqs: ffi::VkMemoryRequirements = unsafe { std::mem::zeroed() };
unsafe {
ffi::vkGetBufferMemoryRequirements(
self.device,
self.vertex_buffer,
std::ptr::addr_of_mut!(mem_reqs),
);
}
let mut alloc_info: ffi::VkMemoryAllocateInfo = unsafe { std::mem::zeroed() };
alloc_info.sType = ffi::VkStructureType_VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
alloc_info.allocationSize = mem_reqs.size;
alloc_info.memoryTypeIndex = self.find_memory_type(
mem_reqs.memoryTypeBits,
let buffer_size: ffi::VkDeviceSize =
(std::mem::size_of::<Vertex>() * VERTICES.len()) as u64;
let (buffer, buffer_mem) = self.create_buffer(
buffer_size,
ffi::VkBufferUsageFlagBits_VK_BUFFER_USAGE_VERTEX_BUFFER_BIT,
ffi::VkMemoryPropertyFlagBits_VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT
| ffi::VkMemoryPropertyFlagBits_VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
)?;
let result = unsafe {
ffi::vkAllocateMemory(
self.device,
std::ptr::addr_of!(alloc_info),
std::ptr::null(),
std::ptr::addr_of_mut!(self.vertex_buffer_memory),
)
};
if result != ffi::VkResult_VK_SUCCESS {
return Err(String::from("Failed to allocate vertex buffer memory!"));
}
unsafe {
ffi::vkBindBufferMemory(
self.device,
self.vertex_buffer,
self.vertex_buffer_memory,
0,
);
}
self.vertex_buffer = buffer;
self.vertex_buffer_memory = buffer_mem;
let mut data_ptr: *mut c_void = unsafe { std::mem::zeroed() };
unsafe {
@ -1673,7 +1627,7 @@ impl VulkanApp {
self.device,
self.vertex_buffer_memory,
0,
buffer_info.size,
buffer_size,
0,
std::ptr::addr_of_mut!(data_ptr),
);
@ -1746,6 +1700,66 @@ impl VulkanApp {
Ok((vertex_input_info, bind_desc, attr_descs))
}
fn create_buffer(
&mut self,
size: ffi::VkDeviceSize,
usage: ffi::VkBufferUsageFlags,
properties: ffi::VkMemoryPropertyFlags,
) -> Result<(ffi::VkBuffer, ffi::VkDeviceMemory), String> {
let mut buffer_info: ffi::VkBufferCreateInfo = unsafe { std::mem::zeroed() };
buffer_info.sType = ffi::VkStructureType_VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
buffer_info.size = size;
buffer_info.usage = usage;
buffer_info.sharingMode = ffi::VkSharingMode_VK_SHARING_MODE_EXCLUSIVE;
let mut buffer: ffi::VkBuffer = std::ptr::null_mut();
let result = unsafe {
ffi::vkCreateBuffer(
self.device,
std::ptr::addr_of!(buffer_info),
std::ptr::null(),
std::ptr::addr_of_mut!(buffer),
)
};
if result != ffi::VkResult_VK_SUCCESS {
return Err(String::from("Failed to create buffer!"));
}
let mut mem_req: ffi::VkMemoryRequirements = unsafe { std::mem::zeroed() };
unsafe {
ffi::vkGetBufferMemoryRequirements(
self.device,
buffer,
std::ptr::addr_of_mut!(mem_req),
);
}
let mut alloc_info: ffi::VkMemoryAllocateInfo = unsafe { std::mem::zeroed() };
alloc_info.sType = ffi::VkStructureType_VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
alloc_info.allocationSize = mem_req.size;
alloc_info.memoryTypeIndex = self.find_memory_type(mem_req.memoryTypeBits, properties)?;
let mut buffer_mem: ffi::VkDeviceMemory = std::ptr::null_mut();
let result = unsafe {
ffi::vkAllocateMemory(
self.device,
std::ptr::addr_of!(alloc_info),
std::ptr::null(),
std::ptr::addr_of_mut!(buffer_mem),
)
};
if result != ffi::VkResult_VK_SUCCESS {
return Err(String::from("Failed to allocate buffer memory"));
}
unsafe {
ffi::vkBindBufferMemory(self.device, buffer, buffer_mem, 0);
}
Ok((buffer, buffer_mem))
}
}
impl Drop for VulkanApp {