| 1 | use crate::Error; |
| 2 | use crate::image::{VulkanTarget, VulkanTexture}; |
| 3 | use crate::pipeline::{Kind, Push}; |
| 4 | use crate::renderer::VulkanRenderer; |
| 5 | use crate::transform::{rect_to_framebuffer, texture_uvs, to_framebuffer}; |
| 6 | use ash::vk; |
| 7 | use smithay::backend::renderer::sync::SyncPoint; |
| 8 | use smithay::backend::renderer::{Color32F, ContextId, Frame, Texture}; |
| 9 | use smithay::utils::{Buffer, Physical, Rectangle, Size, Transform}; |
| 10 | use std::sync::Arc; |
| 11 | |
| 12 | pub(crate) enum Op { |
| 13 | Clear { |
| 14 | color: [f32; 4], |
| 15 | rects: Vec<vk::Rect2D>, |
| 16 | }, |
| 17 | Draw { |
| 18 | kind: Kind, |
| 19 | texture: Option<VulkanTexture>, |
| 20 | push: Push, |
| 21 | scissors: Vec<vk::Rect2D>, |
| 22 | }, |
| 23 | } |
| 24 | |
| 25 | /// A frame in progress. Draws are recorded and submitted together by [`Frame::finish`]. |
| 26 | pub struct VulkanFrame<'frame, 'buffer> { |
| 27 | renderer: &'frame mut VulkanRenderer, |
| 28 | target: &'frame mut VulkanTarget<'buffer>, |
| 29 | output: Size<i32, Physical>, |
| 30 | transform: Transform, |
| 31 | ops: Vec<Op>, |
| 32 | clip: Option<Clip>, |
| 33 | } |
| 34 | |
| 35 | /// A rounded rect in output space that later draws are cut to, until |
| 36 | /// [`VulkanFrame::set_clip`] changes it. A nonzero `ring` keeps only a band |
| 37 | /// that wide inside the edge. |
| 38 | #[derive(Clone, Copy, Debug, PartialEq)] |
| 39 | pub struct Clip { |
| 40 | pub rect: Rectangle<i32, Physical>, |
| 41 | /// Top left, top right, bottom right and bottom left, in pixels. |
| 42 | pub radii: [f32; 4], |
| 43 | pub ring: f32, |
| 44 | } |
| 45 | |
| 46 | impl std::fmt::Debug for VulkanFrame<'_, '_> { |
| 47 | fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { |
| 48 | f.debug_struct("VulkanFrame") |
| 49 | .field("output", &self.output) |
| 50 | .field("ops", &self.ops.len()) |
| 51 | .finish() |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | impl<'frame, 'buffer> VulkanFrame<'frame, 'buffer> { |
| 56 | pub(crate) fn new( |
| 57 | renderer: &'frame mut VulkanRenderer, |
| 58 | target: &'frame mut VulkanTarget<'buffer>, |
| 59 | output: Size<i32, Physical>, |
| 60 | transform: Transform, |
| 61 | ) -> Self { |
| 62 | Self { |
| 63 | renderer, |
| 64 | target, |
| 65 | output, |
| 66 | transform, |
| 67 | ops: Vec::new(), |
| 68 | clip: None, |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | pub fn set_clip(&mut self, clip: Option<Clip>) { |
| 73 | self.clip = clip; |
| 74 | } |
| 75 | |
| 76 | /// The clip's push constants in framebuffer space, where an output |
| 77 | /// transform moves each radius to another corner. |
| 78 | fn clip_push(&self) -> ([f32; 4], [f32; 4], [f32; 4]) { |
| 79 | let Some(c) = self.clip else { |
| 80 | return ([0.0; 4], [0.0; 4], [0.0; 4]); |
| 81 | }; |
| 82 | let [tl, tr, br, bl] = c.radii; |
| 83 | let corners = [[tl, 0.0], [tr, 0.0], [bl, 0.0], [br, 0.0]]; |
| 84 | let (fb, r) = to_framebuffer(c.rect, corners, self.output, self.transform); |
| 85 | let rect = [ |
| 86 | fb.loc.x as f32, |
| 87 | fb.loc.y as f32, |
| 88 | fb.size.w as f32, |
| 89 | fb.size.h as f32, |
| 90 | ]; |
| 91 | let most = fb.size.w.min(fb.size.h) as f32 / 2.0; |
| 92 | let radii = [r[0][0], r[1][0], r[3][0], r[2][0]].map(|r| r.min(most)); |
| 93 | (rect, radii, [c.ring, 0.0, 0.0, 0.0]) |
| 94 | } |
| 95 | |
| 96 | fn fb_size(&self) -> Size<i32, Physical> { |
| 97 | (self.target.width() as i32, self.target.height() as i32).into() |
| 98 | } |
| 99 | |
| 100 | fn fb_rect(&self, r: Rectangle<i32, Physical>) -> Option<vk::Rect2D> { |
| 101 | let r = rect_to_framebuffer(r, self.output, self.transform) |
| 102 | .intersection(Rectangle::from_size(self.fb_size()))?; |
| 103 | Some(vk::Rect2D { |
| 104 | offset: vk::Offset2D { |
| 105 | x: r.loc.x, |
| 106 | y: r.loc.y, |
| 107 | }, |
| 108 | extent: vk::Extent2D { |
| 109 | width: r.size.w as u32, |
| 110 | height: r.size.h as u32, |
| 111 | }, |
| 112 | }) |
| 113 | } |
| 114 | |
| 115 | fn scissors( |
| 116 | &self, |
| 117 | dst: Rectangle<i32, Physical>, |
| 118 | damage: &[Rectangle<i32, Physical>], |
| 119 | ) -> Vec<vk::Rect2D> { |
| 120 | damage |
| 121 | .iter() |
| 122 | .filter_map(|d| d.intersection(Rectangle::from_size(dst.size))) |
| 123 | .filter_map(|mut d| { |
| 124 | d.loc += dst.loc; |
| 125 | self.fb_rect(d) |
| 126 | }) |
| 127 | .collect() |
| 128 | } |
| 129 | |
| 130 | /// Draws a texture through the transition hook in `shaders/effect.frag`. |
| 131 | #[expect(clippy::too_many_arguments)] |
| 132 | pub fn render_effect( |
| 133 | &mut self, |
| 134 | texture: &VulkanTexture, |
| 135 | src: Rectangle<f64, Buffer>, |
| 136 | dst: Rectangle<i32, Physical>, |
| 137 | damage: &[Rectangle<i32, Physical>], |
| 138 | src_transform: Transform, |
| 139 | alpha: f32, |
| 140 | effect: Effect, |
| 141 | ) -> Result<(), Error> { |
| 142 | let params = [effect.progress, effect.kind as u32 as f32, 0.0, 0.0]; |
| 143 | self.draw_texture( |
| 144 | texture, |
| 145 | src, |
| 146 | dst, |
| 147 | damage, |
| 148 | src_transform, |
| 149 | alpha, |
| 150 | Kind::Effect, |
| 151 | params, |
| 152 | ) |
| 153 | } |
| 154 | |
| 155 | #[expect(clippy::too_many_arguments)] |
| 156 | fn draw_texture( |
| 157 | &mut self, |
| 158 | texture: &VulkanTexture, |
| 159 | src: Rectangle<f64, Buffer>, |
| 160 | dst: Rectangle<i32, Physical>, |
| 161 | damage: &[Rectangle<i32, Physical>], |
| 162 | src_transform: Transform, |
| 163 | alpha: f32, |
| 164 | kind: Kind, |
| 165 | effect: [f32; 4], |
| 166 | ) -> Result<(), Error> { |
| 167 | if !Arc::ptr_eq(&texture.0.shared, self.renderer.shared()) { |
| 168 | return Err(Error::ForeignTexture); |
| 169 | } |
| 170 | if dst.size.w <= 0 || dst.size.h <= 0 || Arc::ptr_eq(&texture.0, &self.target.0) { |
| 171 | return Ok(()); |
| 172 | } |
| 173 | let scissors = self.scissors(dst, damage); |
| 174 | if scissors.is_empty() { |
| 175 | return Ok(()); |
| 176 | } |
| 177 | let uvs = texture_uvs(src, dst.size, texture.size(), src_transform); |
| 178 | let (fb, uv) = to_framebuffer(dst, uvs, self.output, self.transform); |
| 179 | let (clip, radii, ring) = self.clip_push(); |
| 180 | let push = Push { |
| 181 | dst: self.ndc(fb), |
| 182 | uv, |
| 183 | color: [1.0, 1.0, 1.0, alpha], |
| 184 | effect, |
| 185 | clip, |
| 186 | radii, |
| 187 | ring, |
| 188 | }; |
| 189 | self.ops.push(Op::Draw { |
| 190 | kind, |
| 191 | texture: Some(texture.clone()), |
| 192 | push, |
| 193 | scissors, |
| 194 | }); |
| 195 | Ok(()) |
| 196 | } |
| 197 | |
| 198 | fn ndc(&self, r: Rectangle<i32, Physical>) -> [f32; 4] { |
| 199 | let fb = self.fb_size(); |
| 200 | let (w, h) = (fb.w as f32, fb.h as f32); |
| 201 | [ |
| 202 | r.loc.x as f32 / w * 2.0 - 1.0, |
| 203 | r.loc.y as f32 / h * 2.0 - 1.0, |
| 204 | r.size.w as f32 / w * 2.0, |
| 205 | r.size.h as f32 / h * 2.0, |
| 206 | ] |
| 207 | } |
| 208 | } |
| 209 | |
| 210 | impl Frame for VulkanFrame<'_, '_> { |
| 211 | type Error = Error; |
| 212 | type TextureId = VulkanTexture; |
| 213 | |
| 214 | fn context_id(&self) -> ContextId<VulkanTexture> { |
| 215 | self.renderer.context_id_ref().clone() |
| 216 | } |
| 217 | |
| 218 | fn clear(&mut self, color: Color32F, at: &[Rectangle<i32, Physical>]) -> Result<(), Error> { |
| 219 | let rects: Vec<_> = at.iter().filter_map(|r| self.fb_rect(*r)).collect(); |
| 220 | if !rects.is_empty() { |
| 221 | self.ops.push(Op::Clear { |
| 222 | color: color.components(), |
| 223 | rects, |
| 224 | }); |
| 225 | } |
| 226 | Ok(()) |
| 227 | } |
| 228 | |
| 229 | fn draw_solid( |
| 230 | &mut self, |
| 231 | dst: Rectangle<i32, Physical>, |
| 232 | damage: &[Rectangle<i32, Physical>], |
| 233 | color: Color32F, |
| 234 | ) -> Result<(), Error> { |
| 235 | let scissors = self.scissors(dst, damage); |
| 236 | if scissors.is_empty() { |
| 237 | return Ok(()); |
| 238 | } |
| 239 | let (fb, _) = to_framebuffer(dst, [[0.0; 2]; 4], self.output, self.transform); |
| 240 | let (clip, radii, ring) = self.clip_push(); |
| 241 | let push = Push { |
| 242 | dst: self.ndc(fb), |
| 243 | uv: [[0.0; 2]; 4], |
| 244 | color: color.components(), |
| 245 | effect: [0.0; 4], |
| 246 | clip, |
| 247 | radii, |
| 248 | ring, |
| 249 | }; |
| 250 | self.ops.push(Op::Draw { |
| 251 | kind: Kind::Solid, |
| 252 | texture: None, |
| 253 | push, |
| 254 | scissors, |
| 255 | }); |
| 256 | Ok(()) |
| 257 | } |
| 258 | |
| 259 | fn render_texture_from_to( |
| 260 | &mut self, |
| 261 | texture: &VulkanTexture, |
| 262 | src: Rectangle<f64, Buffer>, |
| 263 | dst: Rectangle<i32, Physical>, |
| 264 | damage: &[Rectangle<i32, Physical>], |
| 265 | _opaque_regions: &[Rectangle<i32, Physical>], |
| 266 | src_transform: Transform, |
| 267 | alpha: f32, |
| 268 | ) -> Result<(), Error> { |
| 269 | self.draw_texture( |
| 270 | texture, |
| 271 | src, |
| 272 | dst, |
| 273 | damage, |
| 274 | src_transform, |
| 275 | alpha, |
| 276 | Kind::Texture, |
| 277 | [0.0; 4], |
| 278 | ) |
| 279 | } |
| 280 | |
| 281 | fn transformation(&self) -> Transform { |
| 282 | self.transform |
| 283 | } |
| 284 | |
| 285 | fn output_size(&self) -> Size<i32, Physical> { |
| 286 | self.output |
| 287 | } |
| 288 | |
| 289 | fn wait(&mut self, sync: &SyncPoint) -> Result<(), Error> { |
| 290 | sync.wait().map_err(|_| Error::Interrupted) |
| 291 | } |
| 292 | |
| 293 | fn finish(mut self) -> Result<SyncPoint, Error> { |
| 294 | let ops = std::mem::take(&mut self.ops); |
| 295 | self.renderer.submit(self.target, ops) |
| 296 | } |
| 297 | } |
| 298 | |
| 299 | #[derive(Clone, Copy, Debug, PartialEq, Eq)] |
| 300 | pub enum Transition { |
| 301 | Move = 0, |
| 302 | Spawn = 1, |
| 303 | Close = 2, |
| 304 | } |
| 305 | |
| 306 | /// A window transition for the effect shader, with `progress` in [0, 1]. |
| 307 | #[derive(Clone, Copy, Debug, PartialEq)] |
| 308 | pub struct Effect { |
| 309 | pub kind: Transition, |
| 310 | pub progress: f32, |
| 311 | } |