theme: store colors in linear space

src/ifs/jay_damage_tracking.rs

@@ -4,7 +4,7 @@ use {
         globals::{Global, GlobalName},
         leaks::Tracker,
         object::{Object, Version},
-        theme::Color,
+        theme::{Color, TransferFunction},
         wire::{
             JayCompositorId,
             jay_damage_tracking::{
@@ -96,12 +96,8 @@ impl JayDamageTrackingRequestHandler for JayDamageTracking {
         req: SetVisualizerColor,
         _slf: &Rc<Self>,
     ) -> Result<(), Self::Error> {
-        self.client.state.damage_visualizer.set_color(Color {
-            r: req.r,
-            g: req.g,
-            b: req.b,
-            a: req.a,
-        });
+        let color = Color::new(TransferFunction::Srgb, req.r, req.g, req.b) * req.a;
+        self.client.state.damage_visualizer.set_color(color);
         Ok(())
     }
 

src/ifs/wl_buffer.rs

@@ -8,7 +8,6 @@ use {
         leaks::Tracker,
         object::{Object, Version},
         rect::{Rect, Region},
-        theme::Color,
         utils::errorfmt::ErrorFmt,
         video::dmabuf::DmaBuf,
         wire::{WlBufferId, wl_buffer::*},
@@ -42,7 +41,7 @@ pub struct WlBuffer {
     render_ctx_version: Cell<u32>,
     pub storage: RefCell<Option<WlBufferStorage>>,
     shm: bool,
-    pub color: Option<Color>,
+    pub color: Option<[u32; 4]>,
     width: i32,
     height: i32,
     pub tracker: Tracker<Self>,
@@ -149,7 +148,7 @@ impl WlBuffer {
             width: 1,
             height: 1,
             tracker: Default::default(),
-            color: Some(Color::from_u32_rgba_premultiplied(r, g, b, a)),
+            color: Some([r, g, b, a]),
         }
     }