Disable Magpie glium gamma-correction

apps/magpie/src/service/gl.rs

@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
 use canary::{DrawCommand, Vec2, PX_PER_MM};
-use glium::Surface;
+use glium::{program::ProgramCreationInput, Surface};
 
 #[derive(Copy, Clone)]
 pub struct Vertex {
@@ -59,9 +59,21 @@ pub struct Graphics {
 
 impl Graphics {
     pub fn new(display: glium::Display) -> Self {
-        let program =
-            glium::Program::from_source(&display, VERTEX_SHADER_SRC, FRAGMENT_SHADER_SRC, None)
-                .unwrap();
+        let program = glium::Program::new(
+            &display,
+            ProgramCreationInput::SourceCode {
+                vertex_shader: VERTEX_SHADER_SRC,
+                tessellation_control_shader: None,
+                tessellation_evaluation_shader: None,
+                geometry_shader: None,
+                fragment_shader: FRAGMENT_SHADER_SRC,
+                transform_feedback_varyings: None,
+                outputs_srgb: true, // don't automatically apply gamma correction
+                uses_point_size: false,
+            },
+        )
+        .unwrap();
+
         Self { display, program }
     }