48 lines
1.7 KiB
Rust
48 lines
1.7 KiB
Rust
use {
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crate::gfx_apis::vulkan::{device::VulkanDevice, sampler::VulkanSampler, VulkanError},
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ash::vk::{
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DescriptorSetLayout, DescriptorSetLayoutBinding, DescriptorSetLayoutCreateFlags,
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DescriptorSetLayoutCreateInfo, DescriptorType, ShaderStageFlags,
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},
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std::{rc::Rc, slice},
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};
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pub(super) struct VulkanDescriptorSetLayout {
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pub(super) device: Rc<VulkanDevice>,
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pub(super) layout: DescriptorSetLayout,
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pub(super) _sampler: Rc<VulkanSampler>,
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}
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impl Drop for VulkanDescriptorSetLayout {
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fn drop(&mut self) {
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unsafe {
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self.device
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.device
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.destroy_descriptor_set_layout(self.layout, None);
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}
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}
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}
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impl VulkanDevice {
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pub(super) fn create_descriptor_set_layout(
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&self,
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sampler: &Rc<VulkanSampler>,
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) -> Result<Rc<VulkanDescriptorSetLayout>, VulkanError> {
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let immutable_sampler = [sampler.sampler];
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let binding = DescriptorSetLayoutBinding::default()
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.stage_flags(ShaderStageFlags::FRAGMENT)
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.immutable_samplers(&immutable_sampler)
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.descriptor_count(1)
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.descriptor_type(DescriptorType::COMBINED_IMAGE_SAMPLER);
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let create_info = DescriptorSetLayoutCreateInfo::default()
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.bindings(slice::from_ref(&binding))
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.flags(DescriptorSetLayoutCreateFlags::PUSH_DESCRIPTOR_KHR);
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let layout = unsafe { self.device.create_descriptor_set_layout(&create_info, None) };
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let layout = layout.map_err(VulkanError::CreateDescriptorSetLayout)?;
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Ok(Rc::new(VulkanDescriptorSetLayout {
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device: sampler.device.clone(),
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layout,
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_sampler: sampler.clone(),
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}))
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}
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}
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