From eee1a64d1475c42e6313f33fb04f9dac1b34f781 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=9C=D0=B0=D0=BB=D0=BE=D0=B2=20=D0=90=D0=BD=D0=B4=D1=80?=
 =?UTF-8?q?=D0=B5=D0=B9=20=D0=92=D0=BB=D0=B0=D0=B4=D0=B8=D0=BC=D0=B8=D1=80?=
 =?UTF-8?q?=D0=BE=D0=B2=D0=B8=D1=87?= <malov.av@barl.ru>
Date: Mon, 27 Apr 2026 17:50:21 +0300
Subject: [PATCH] render/opengl/linux/glx: publish chosen visual + colormap to
 os layer

---
 .../linux/glx/render_opengl_linux_glx.c       | 22 ++++++++++++++-----
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/src/render/opengl/linux/glx/render_opengl_linux_glx.c b/src/render/opengl/linux/glx/render_opengl_linux_glx.c
index 69106f1b..fecdc4a4 100644
--- a/src/render/opengl/linux/glx/render_opengl_linux_glx.c
+++ b/src/render/opengl/linux/glx/render_opengl_linux_glx.c
@@ -50,12 +50,22 @@ r_ogl_os_init(CmdLine *cmdln)
   }
   GLXFBConfig framebuffer_config = framebuffer_configs[0];
   XFree(framebuffer_configs);
-  
-  //- rjf: construct set-window-attributes
-  XSetWindowAttributes set_window_attributes = {0};
-  set_window_attributes.background_pixmap = None;
-  set_window_attributes.border_pixel      = 0;
-  set_window_attributes.event_mask        = StructureNotifyMask;
+
+  //- extract visual/colormap from chosen fbconfig, publish to os layer
+  {
+    XVisualInfo *vi = glXGetVisualFromFBConfig(lnx_wm_state->display, framebuffer_config);
+    if(vi == 0)
+    {
+      wm_graphical_message(1, str8_lit("Fatal Error"), str8_lit("Could not get visual from GLX framebuffer config."));
+      abort_self(1);
+    }
+    lnx_wm_state->window_visual = vi->visual;
+    lnx_wm_state->window_depth = vi->depth;
+    lnx_wm_state->window_colormap = XCreateColormap(lnx_wm_state->display,
+                                                        XRootWindow(lnx_wm_state->display, vi->screen),
+                                                        vi->visual, AllocNone);
+    XFree(vi);
+  }
   
   //- rjf: construct context
   {