From ad4e9bb42c15c308b9c56968dd2e79a430738526 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Fri, 1 Dec 2023 13:58:09 +0530
Subject: [PATCH] Add a check that the output buffer is actually sRGB

---
 kitty/glfw.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/kitty/glfw.c b/kitty/glfw.c
index 7916872004f..d5794c99e80 100644
--- a/kitty/glfw.c
+++ b/kitty/glfw.c
@@ -1135,7 +1135,11 @@ create_os_window(PyObject UNUSED *self, PyObject *args, PyObject *kw) {
         if (ret == NULL) return NULL;
         Py_DECREF(ret);
         get_platform_dependent_config_values(glfw_window);
+        GLint encoding;
+        glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_BACK_LEFT, GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING, &encoding);
+        if (encoding != GL_SRGB) log_error("The output buffer does not support sRGB color encoding, colors will be incorrect.");
         is_first_window = false;
+
     }
     OSWindow *w = add_os_window();
     w->handle = glfw_window;