| 1 | use crate::image::{ImageInner, color_range}; |
| 2 | use ash::vk; |
| 3 | use std::sync::Arc; |
| 4 | |
| 5 | /// Layout changes recorded into a command buffer that has not been submitted. |
| 6 | /// Images keep their old layout until `commit`, so a failed submit leaves the |
| 7 | /// tracking true to what the GPU has done. |
| 8 | #[derive(Default)] |
| 9 | pub(crate) struct LayoutLog(Vec<(Arc<ImageInner>, vk::ImageLayout)>); |
| 10 | |
| 11 | impl LayoutLog { |
| 12 | fn current(&self, image: &Arc<ImageInner>) -> vk::ImageLayout { |
| 13 | self.0 |
| 14 | .iter() |
| 15 | .rev() |
| 16 | .find(|(i, _)| Arc::ptr_eq(i, image)) |
| 17 | .map_or_else(|| image.layout(), |(_, layout)| *layout) |
| 18 | } |
| 19 | |
| 20 | pub fn commit(self) { |
| 21 | for (image, layout) in self.0 { |
| 22 | image.set_layout(layout); |
| 23 | } |
| 24 | } |
| 25 | } |
| 26 | |
| 27 | struct Scope { |
| 28 | stage: vk::PipelineStageFlags2, |
| 29 | access: vk::AccessFlags2, |
| 30 | } |
| 31 | |
| 32 | /// What an image may still be doing when it leaves `layout`. Layouts the |
| 33 | /// renderer does not use itself, the general layout of dmabufs among them, |
| 34 | /// wait for everything. |
| 35 | fn leaving(layout: vk::ImageLayout) -> Scope { |
| 36 | let (stage, access) = match layout { |
| 37 | vk::ImageLayout::UNDEFINED => (vk::PipelineStageFlags2::NONE, vk::AccessFlags2::NONE), |
| 38 | vk::ImageLayout::TRANSFER_DST_OPTIMAL => ( |
| 39 | vk::PipelineStageFlags2::TRANSFER, |
| 40 | vk::AccessFlags2::TRANSFER_WRITE, |
| 41 | ), |
| 42 | vk::ImageLayout::TRANSFER_SRC_OPTIMAL => { |
| 43 | (vk::PipelineStageFlags2::TRANSFER, vk::AccessFlags2::NONE) |
| 44 | } |
| 45 | vk::ImageLayout::SHADER_READ_ONLY_OPTIMAL => ( |
| 46 | vk::PipelineStageFlags2::FRAGMENT_SHADER, |
| 47 | vk::AccessFlags2::NONE, |
| 48 | ), |
| 49 | vk::ImageLayout::COLOR_ATTACHMENT_OPTIMAL => ( |
| 50 | vk::PipelineStageFlags2::COLOR_ATTACHMENT_OUTPUT, |
| 51 | vk::AccessFlags2::COLOR_ATTACHMENT_WRITE, |
| 52 | ), |
| 53 | _ => ( |
| 54 | vk::PipelineStageFlags2::ALL_COMMANDS, |
| 55 | vk::AccessFlags2::MEMORY_WRITE, |
| 56 | ), |
| 57 | }; |
| 58 | Scope { stage, access } |
| 59 | } |
| 60 | |
| 61 | /// What an image does once it is in `layout`. |
| 62 | fn entering(layout: vk::ImageLayout) -> Scope { |
| 63 | let (stage, access) = match layout { |
| 64 | vk::ImageLayout::TRANSFER_DST_OPTIMAL => ( |
| 65 | vk::PipelineStageFlags2::TRANSFER, |
| 66 | vk::AccessFlags2::TRANSFER_WRITE, |
| 67 | ), |
| 68 | vk::ImageLayout::TRANSFER_SRC_OPTIMAL => ( |
| 69 | vk::PipelineStageFlags2::TRANSFER, |
| 70 | vk::AccessFlags2::TRANSFER_READ, |
| 71 | ), |
| 72 | vk::ImageLayout::SHADER_READ_ONLY_OPTIMAL => ( |
| 73 | vk::PipelineStageFlags2::FRAGMENT_SHADER, |
| 74 | vk::AccessFlags2::SHADER_SAMPLED_READ, |
| 75 | ), |
| 76 | vk::ImageLayout::COLOR_ATTACHMENT_OPTIMAL => ( |
| 77 | vk::PipelineStageFlags2::COLOR_ATTACHMENT_OUTPUT, |
| 78 | vk::AccessFlags2::COLOR_ATTACHMENT_READ | vk::AccessFlags2::COLOR_ATTACHMENT_WRITE, |
| 79 | ), |
| 80 | _ => ( |
| 81 | vk::PipelineStageFlags2::ALL_COMMANDS, |
| 82 | vk::AccessFlags2::MEMORY_READ | vk::AccessFlags2::MEMORY_WRITE, |
| 83 | ), |
| 84 | }; |
| 85 | Scope { stage, access } |
| 86 | } |
| 87 | |
| 88 | /// The image barriers of one phase of a command buffer, recorded together. |
| 89 | #[derive(Default)] |
| 90 | pub(crate) struct Barriers(Vec<vk::ImageMemoryBarrier2<'static>>); |
| 91 | |
| 92 | impl Barriers { |
| 93 | fn push( |
| 94 | &mut self, |
| 95 | image: vk::Image, |
| 96 | (old, src_family): (vk::ImageLayout, u32), |
| 97 | (new, dst_family): (vk::ImageLayout, u32), |
| 98 | ) { |
| 99 | let (from, to) = (leaving(old), entering(new)); |
| 100 | self.0.push( |
| 101 | vk::ImageMemoryBarrier2::default() |
| 102 | .src_stage_mask(from.stage) |
| 103 | .src_access_mask(from.access) |
| 104 | .dst_stage_mask(to.stage) |
| 105 | .dst_access_mask(to.access) |
| 106 | .old_layout(old) |
| 107 | .new_layout(new) |
| 108 | .src_queue_family_index(src_family) |
| 109 | .dst_queue_family_index(dst_family) |
| 110 | .image(image) |
| 111 | .subresource_range(color_range()), |
| 112 | ); |
| 113 | } |
| 114 | |
| 115 | /// Moves an image into `layout` for use on this queue. Dmabuf images come |
| 116 | /// from the foreign queue family in the general layout, others continue |
| 117 | /// from their tracked layout. |
| 118 | pub fn acquire( |
| 119 | &mut self, |
| 120 | family: u32, |
| 121 | image: &Arc<ImageInner>, |
| 122 | layout: vk::ImageLayout, |
| 123 | log: &mut LayoutLog, |
| 124 | ) { |
| 125 | if image.external { |
| 126 | self.push( |
| 127 | image.image, |
| 128 | (vk::ImageLayout::GENERAL, vk::QUEUE_FAMILY_FOREIGN_EXT), |
| 129 | (layout, family), |
| 130 | ); |
| 131 | } else { |
| 132 | let old = log.current(image); |
| 133 | if old != layout { |
| 134 | self.push( |
| 135 | image.image, |
| 136 | (old, vk::QUEUE_FAMILY_IGNORED), |
| 137 | (layout, vk::QUEUE_FAMILY_IGNORED), |
| 138 | ); |
| 139 | log.0.push((image.clone(), layout)); |
| 140 | } |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | /// Hands a dmabuf image back to the foreign queue family after use. |
| 145 | pub fn release(&mut self, family: u32, image: &ImageInner, layout: vk::ImageLayout) { |
| 146 | if image.external { |
| 147 | self.push( |
| 148 | image.image, |
| 149 | (layout, family), |
| 150 | (vk::ImageLayout::GENERAL, vk::QUEUE_FAMILY_FOREIGN_EXT), |
| 151 | ); |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | pub unsafe fn record(self, d: &ash::Device, cmd: vk::CommandBuffer) { |
| 156 | if self.0.is_empty() { |
| 157 | return; |
| 158 | } |
| 159 | unsafe { |
| 160 | d.cmd_pipeline_barrier2( |
| 161 | cmd, |
| 162 | &vk::DependencyInfo::default().image_memory_barriers(&self.0), |
| 163 | ) |
| 164 | }; |
| 165 | } |
| 166 | } |