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
157
158
159
160
161
162
163
164

//! CommandPool module docs.

use {
    crate::{buffer::*, capability::*, core::Device, family::FamilyId},
    rendy_core::hal::{device::Device as _, pool::CommandPool as _, Backend},
};

/// Simple pool wrapper.
/// Doesn't provide any guarantees.
/// Wraps raw buffers into `CommandCommand buffer`.
#[derive(Debug)]
pub struct CommandPool<B: Backend, C = QueueType, R = NoIndividualReset> {
    raw: B::CommandPool,
    capability: C,
    reset: R,
    family: FamilyId,
    relevant: relevant::Relevant,
}

family_owned!(CommandPool<B, C, R>);

impl<B, C, R> CommandPool<B, C, R>
where
    B: Backend,
    R: Reset,
{
    /// Create command pool associated with the family.
    /// Command buffers created from the pool could be submitted to the queues of the family.
    ///
    /// # Safety
    ///
    /// Family must belong to specified device.
    /// Family must have specified capability.
    pub unsafe fn create(
        family: FamilyId,
        capability: C,
        device: &Device<B>,
    ) -> Result<Self, rendy_core::hal::device::OutOfMemory>
    where
        R: Reset,
        C: Capability,
    {
        let reset = R::default();
        let raw = device.create_command_pool(
            rendy_core::hal::queue::QueueFamilyId(family.index),
            reset.flags(),
        )?;
        Ok(CommandPool::from_raw(raw, capability, reset, family))
    }

    /// Wrap raw command pool.
    ///
    /// # Safety
    ///
    /// * `raw` must be valid command pool handle.
    /// * The command pool must be created for specified `family` index.
    /// * `capability` must be subset of capabilites of the `family` the pool was created for.
    /// * if `reset` is `IndividualReset` the pool must be created with individual command buffer reset flag set.
    pub unsafe fn from_raw(raw: B::CommandPool, capability: C, reset: R, family: FamilyId) -> Self {
        CommandPool {
            raw,
            capability,
            reset,
            family,
            relevant: relevant::Relevant,
        }
    }

    /// Allocate new command buffers.
    pub fn allocate_buffers<L: Level>(
        &mut self,
        count: usize,
    ) -> Vec<CommandBuffer<B, C, InitialState, L, R>>
    where
        L: Level,
        C: Capability,
    {
        let level = L::default();

        let buffers = unsafe { self.raw.allocate_vec(count, level.raw_level()) };

        buffers
            .into_iter()
            .map(|raw| unsafe {
                CommandBuffer::from_raw(
                    raw,
                    self.capability,
                    InitialState,
                    level,
                    self.reset,
                    self.family,
                )
            })
            .collect()
    }

    /// Free buffers.
    /// Buffers must be in droppable state.
    /// TODO: Validate buffers were allocated from this pool.
    pub unsafe fn free_buffers(
        &mut self,
        buffers: impl IntoIterator<Item = CommandBuffer<B, C, impl Resettable, impl Level, R>>,
    ) {
        let buffers = buffers
            .into_iter()
            .map(|buffer| buffer.into_raw())
            .collect::<Vec<_>>();

        self.raw.free(buffers);
    }

    /// Reset all buffers of this pool.
    ///
    /// # Safety
    ///
    /// All buffers allocated from this pool must be marked reset.
    /// See [`CommandBuffer::mark_reset`](struct.Command buffer.html#method.mark_reset)
    pub unsafe fn reset(&mut self) {
        rendy_core::hal::pool::CommandPool::reset(&mut self.raw, false);
    }

    /// Dispose of command pool.
    ///
    /// # Safety
    ///
    /// All buffers allocated from this pool must be [freed](#method.free_buffers).
    pub unsafe fn dispose(self, device: &Device<B>) {
        self.assert_device_owner(device);
        device.destroy_command_pool(self.raw);
        self.relevant.dispose();
    }

    /// Convert capability level
    pub fn with_queue_type(self) -> CommandPool<B, QueueType, R>
    where
        C: Capability,
    {
        CommandPool {
            raw: self.raw,
            capability: self.capability.into_queue_type(),
            reset: self.reset,
            family: self.family,
            relevant: self.relevant,
        }
    }

    /// Convert capability level
    pub fn with_capability<U>(self) -> Result<CommandPool<B, U, R>, Self>
    where
        C: Supports<U>,
    {
        if let Some(capability) = self.capability.supports() {
            Ok(CommandPool {
                raw: self.raw,
                capability,
                reset: self.reset,
                family: self.family,
                relevant: self.relevant,
            })
        } else {
            Err(self)
        }
    }
}