mepeyew 0.3.5

mepeyew - Small But Powerful Graphics Library
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131

use super::*;

pub enum VkFramebuffer {
    Single(VkSingleFramebuffer),
    Swapchain(Vec<VkSingleFramebuffer>),
}

impl VkFramebuffer {
    pub fn new(
        context: &VkContext,
        render_pass: vk::RenderPass,
        images: &[AttachmentImageId],
        resolve_images: &[vk::ImageView],
        width: usize,
        height: usize,
        use_swapchain: bool,
    ) -> GResult<VkFramebuffer> {
        Ok(if use_swapchain {
            let framebuffers = context
                .surface_ext
                .as_ref()
                .ok_or(gpu_api_err!(
                    "vulkan tried to create surface framebuffer without surface extension"
                ))?
                .swapchain
                .swapchain_image_views
                .iter()
                .copied()
                .map(|image_view| {
                    VkSingleFramebuffer::new(
                        context,
                        render_pass,
                        images,
                        resolve_images,
                        width,
                        height,
                        Some(image_view),
                    )
                })
                .collect::<GResult<Vec<_>>>()?;
            VkFramebuffer::Swapchain(framebuffers)
        } else {
            VkFramebuffer::Single(VkSingleFramebuffer::new(
                context,
                render_pass,
                images,
                resolve_images,
                width,
                height,
                None,
            )?)
        })
    }

    pub fn get_current_framebuffer(&self, idx: u32) -> vk::Framebuffer {
        match self {
            Self::Single(fb) => fb.framebuffer,
            Self::Swapchain(fbs) => fbs[idx as usize].framebuffer,
        }
    }
}

pub struct VkSingleFramebuffer {
    pub framebuffer: vk::Framebuffer,

    drop_queue_ref: VkDropQueueRef,
}

//  TODO FIX: Assert that image dims >= fb dims.
impl VkSingleFramebuffer {
    fn new(
        context: &VkContext,
        render_pass: vk::RenderPass,
        images: &[AttachmentImageId],
        resolve_images: &[vk::ImageView],
        width: usize,
        height: usize,
        swapchain_image_view: Option<vk::ImageView>,
    ) -> GResult<Self> {
        let mut image_views = vec![];
        if let Some(swapchain_image_view) = swapchain_image_view {
            image_views.push(swapchain_image_view);
        }

        images.iter().for_each(|attachment_image_id| {
            let attachment_image = context
                .attachment_images
                .get(attachment_image_id.id())
                .unwrap();
            image_views.push(attachment_image.image_view);
        });

        resolve_images
            .iter()
            .for_each(|&additional_attachment_view| {
                image_views.push(additional_attachment_view);
            });

        let framebuffer_create = vk::FramebufferCreateInfo::builder()
            .render_pass(render_pass)
            .attachments(&image_views)
            .width(width as u32)
            .height(height as u32)
            .layers(1)
            .build();
        let framebuffer = unsafe {
            context
                .core
                .dev
                .create_framebuffer(&framebuffer_create, None)
        }
        .map_err(|e| gpu_api_err!("vulkan lone framebuffer init {}", e))?;

        Ok(VkSingleFramebuffer {
            framebuffer,
            drop_queue_ref: Arc::clone(&context.drop_queue),
        })
    }
}

impl Drop for VkSingleFramebuffer {
    fn drop(&mut self) {
        let framebuffer = self.framebuffer;
        self.drop_queue_ref
            .lock()
            .unwrap()
            .push(Box::new(move |dev, _| unsafe {
                dev.destroy_framebuffer(framebuffer, None);
            }))
    }
}