use anyhow::Result;

use vulkanalia::prelude::v1_0::*;

use crate::app::AppData;

pub(crate) unsafe fn create_descriptor_set_layout(
    device: &Device,
    data: &mut AppData,
) -> Result<()> {
    let ubo_binding = vk::DescriptorSetLayoutBinding::builder()
        .binding(0)
        .descriptor_type(vk::DescriptorType::UNIFORM_BUFFER)
        .descriptor_count(1)
        .stage_flags(vk::ShaderStageFlags::VERTEX);

    let sampler_binding = vk::DescriptorSetLayoutBinding::builder()
        .binding(1)
        .descriptor_type(vk::DescriptorType::COMBINED_IMAGE_SAMPLER)
        .descriptor_count(1)
        .stage_flags(vk::ShaderStageFlags::FRAGMENT);

    let bindings = &[ubo_binding, sampler_binding];
    let info = vk::DescriptorSetLayoutCreateInfo::builder().bindings(bindings);

    data.descriptor_set_layout = device.create_descriptor_set_layout(&info, None)?;

    Ok(())
}