molgfx-render 0.3.0

The render graph, passes and the engine that drives a frame.
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
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156

//! Categorical-volume resource and representation reconciliation.

use super::super::segmentation_slot::{
    GpuSegmentationResource, GpuSegmentationSlot, SegmentationSync,
};
use super::GpuScene;
use crate::error::RenderError;
use molgfx_core::Scene;
use molgfx_gpu::Device;

impl<D: Device> GpuScene<D> {
    pub(super) fn reconcile_segmentations(&mut self, scene: &Scene) {
        let revision = (
            scene.segmentation_revision(),
            scene.representation_revision(),
        );
        if self.segmentation_slot_revision == Some(revision) {
            return;
        }
        self.representation_scratch.clear();
        self.representation_scratch.extend(
            scene
                .representations()
                .filter(|(_, representation)| {
                    representation.visible && representation.segmentation_handle().is_some()
                })
                .map(|(handle, representation)| (representation.order, handle)),
        );
        self.representation_scratch.sort_unstable();
        self.segmentation_handle_scratch.clear();
        self.segmentation_handle_scratch.extend(
            scene
                .representations()
                .filter(|(_, representation)| representation.visible)
                .filter_map(|(_, representation)| representation.segmentation_handle()),
        );
        self.segmentation_handle_scratch.sort_unstable();
        self.segmentation_handle_scratch.dedup();

        let mut old_resources = std::mem::take(&mut self.segmentation_resources);
        for (source_id, handle) in self.segmentation_handle_scratch.iter().enumerate() {
            let source_id = crate::fallback(u32::try_from(source_id), u32::MAX);
            if let Some(index) = old_resources
                .iter()
                .position(|resource| resource.handle == *handle)
            {
                let mut resource = old_resources.swap_remove(index);
                resource.set_source_id(source_id);
                self.segmentation_resources.push(resource);
            } else {
                let mut resource = GpuSegmentationResource::new(*handle);
                resource.set_source_id(source_id);
                self.segmentation_resources.push(resource);
            }
        }

        let mut old = std::mem::take(&mut self.segmentation_slots);
        for (_, handle) in &self.representation_scratch {
            if let Some(index) = old.iter().position(|slot| slot.representation == *handle) {
                self.segmentation_slots.push(old.swap_remove(index));
            } else {
                self.segmentation_slots
                    .push(GpuSegmentationSlot::new(*handle));
            }
        }
        self.segmentation_slot_revision = Some(revision);
    }

    pub(super) fn sync_segmentation_resources(
        &mut self,
        device: &D,
        queue: &D::Queue,
        scene: &Scene,
    ) -> Result<bool, RenderError> {
        let mut changed = false;
        for resource in &mut self.segmentation_resources {
            let Some(volume) = scene.segmented_volume(resource.handle) else {
                continue;
            };
            let Some(revision) = scene.segmentation_content_revision(resource.handle) else {
                continue;
            };
            changed |= resource.sync(device, queue, volume, revision)?;
        }
        Ok(changed)
    }

    pub(super) fn sync_segmentation_slots(
        &mut self,
        device: &D,
        queue: &D::Queue,
        scene: &Scene,
    ) -> Result<bool, RenderError> {
        let mut changed = false;
        for slot in &mut self.segmentation_slots {
            let Some(representation) = scene.representation(slot.representation) else {
                continue;
            };
            let Some(segmentation_handle) = representation.segmentation_handle() else {
                continue;
            };
            let Some(volume) = scene.segmented_volume(segmentation_handle) else {
                continue;
            };
            let Some(resource) = self
                .segmentation_resources
                .iter()
                .find(|resource| resource.handle == segmentation_handle)
            else {
                continue;
            };
            let Some((volume_view, volume_binding_revision)) = resource.binding() else {
                continue;
            };
            let Some(representation_revision) =
                scene.representation_content_revision(slot.representation)
            else {
                continue;
            };
            changed |= slot.sync(&SegmentationSync {
                device,
                queue,
                layout: &self.segmentation_layout,
                volume,
                representation,
                representation_revision,
                segmentation_handle,
                volume_view,
                volume_binding_revision,
                source_id: resource.source_id(),
            })?;
        }
        Ok(changed)
    }

    pub(crate) fn resolve_segment(
        &self,
        source_id: u32,
        label: u32,
    ) -> Option<molgfx_core::VolumeSegmentRef> {
        let resource = self
            .segmentation_resources
            .iter()
            .find(|resource| resource.source_id() == source_id)?;
        Some(molgfx_core::VolumeSegmentRef {
            volume: resource.handle,
            label,
        })
    }

    pub(crate) fn has_segmentation_translucency(&self) -> bool {
        self.segmentation_slots
            .iter()
            .any(GpuSegmentationSlot::source_is_drawable)
    }
}