Fix screen transition across scale/transform changes

1 files changed, 9 insertions, 0 deletions

diff --git a/src/ui/screen_transition.rs b/src/ui/screen_transition.rs
index ecec1f1e..3b5c2159 100644
--- a/src/ui/screen_transition.rs
+++ b/src/ui/screen_transition.rs
@@ -2,6 +2,7 @@ use std::time::Duration;
 
 use smithay::backend::renderer::element::Kind;
 use smithay::backend::renderer::gles::GlesTexture;
+use smithay::utils::{Scale, Transform};
 
 use crate::render_helpers::primary_gpu_texture::PrimaryGpuTextureRenderElement;
 use crate::render_helpers::texture::{TextureBuffer, TextureRenderElement};
@@ -43,6 +44,14 @@ impl ScreenTransition {
         self.alpha == 0.
     }
 
+    pub fn update_render_elements(&mut self, scale: Scale<f64>, transform: Transform) {
+        // These textures should remain full-screen, even if scale or transform changes.
+        for buffer in &mut self.from_texture {
+            buffer.set_texture_scale(scale);
+            buffer.set_texture_transform(transform);
+        }
+    }
+
     pub fn render(&self, target: RenderTarget) -> PrimaryGpuTextureRenderElement {
         let idx = match target {
             RenderTarget::Output => 0,