69 lines
2 KiB
Rust
69 lines
2 KiB
Rust
use crate::error;
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use crate::vulkan_primitives::VulkanBuffer;
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use ash::vk;
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use librashader_runtime::ringbuffer::{BoxRingBuffer, InlineRingBuffer, RingBuffer};
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use librashader_runtime::uniforms::UniformStorageAccess;
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pub struct VkUboRing {
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ring: BoxRingBuffer<VulkanBuffer>,
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device: ash::Device,
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}
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impl VkUboRing {
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pub fn new(
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device: &ash::Device,
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mem_props: &vk::PhysicalDeviceMemoryProperties,
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ring_size: usize,
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buffer_size: usize,
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) -> error::Result<Self> {
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let mut ring = Vec::new();
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for _ in 0..ring_size {
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ring.push(VulkanBuffer::new(
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device,
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mem_props,
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vk::BufferUsageFlags::UNIFORM_BUFFER,
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buffer_size,
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)?);
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}
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Ok(VkUboRing {
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ring: BoxRingBuffer::from_vec(ring),
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device: device.clone(),
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})
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}
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pub fn bind_to_descriptor_set(
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&mut self,
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descriptor_set: vk::DescriptorSet,
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binding: u32,
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storage: &impl UniformStorageAccess,
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) -> error::Result<()> {
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let mut buffer = self.ring.current_mut();
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// todo: write directly to allocated buffer.
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unsafe {
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let mut map = buffer.map()?;
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map.copy_from(0, storage.ubo_slice())
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}
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unsafe {
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let buffer_info = vk::DescriptorBufferInfo::builder()
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.buffer(buffer.handle)
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.offset(0)
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.range(storage.ubo_slice().len() as vk::DeviceSize)
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.build();
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let write_info = vk::WriteDescriptorSet::builder()
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.descriptor_type(vk::DescriptorType::UNIFORM_BUFFER)
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.dst_set(descriptor_set)
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.dst_binding(binding)
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.dst_array_element(0)
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.buffer_info(&[buffer_info])
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.build();
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self.device.update_descriptor_sets(&[write_info], &[])
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}
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self.ring.next();
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Ok(())
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}
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}
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