diff --git a/src/os/gfx/linux/os_gfx_linux.c b/src/os/gfx/linux/os_gfx_linux.c
index 0d5d6151..189a7ad8 100644
--- a/src/os/gfx/linux/os_gfx_linux.c
+++ b/src/os/gfx/linux/os_gfx_linux.c
@@ -134,13 +134,19 @@ internal void
 os_window_close(OS_Handle handle)
 {
   if(os_handle_match(handle, os_handle_zero())) {return;}
+  OS_LNX_Window *w = (OS_LNX_Window *)handle.u64[0];
+  XDestroyWindow(os_lnx_gfx_state->display, w->window);
 }
 
 internal void
 os_window_set_title(OS_Handle handle, String8 title)
 {
   if(os_handle_match(handle, os_handle_zero())) {return;}
-  // TODO(rjf)
+  Temp scratch = scratch_begin(0, 0);
+  OS_LNX_Window *w = (OS_LNX_Window *)handle.u64[0];
+  String8 title_copy = push_str8_copy(scratch.arena, title);
+  XStoreName(os_lnx_gfx_state->display, w->window, (char *)title_copy.str);
+  scratch_end(scratch);
 }
 
 internal void
@@ -155,12 +161,15 @@ internal void
 os_window_focus(OS_Handle handle)
 {
   if(os_handle_match(handle, os_handle_zero())) {return;}
+  OS_LNX_Window *w = (OS_LNX_Window *)handle.u64[0];
+  XSetInputFocus(os_lnx_gfx_state->display, w->window, RevertToNone, CurrentTime);
 }
 
 internal B32
 os_window_is_focused(OS_Handle handle)
 {
   if(os_handle_match(handle, os_handle_zero())) {return 0;}
+  // TODO(rjf)
   return 0;
 }
 
@@ -168,6 +177,7 @@ internal B32
 os_window_is_fullscreen(OS_Handle handle)
 {
   if(os_handle_match(handle, os_handle_zero())) {return 0;}
+  // TODO(rjf)
   return 0;
 }
 
@@ -175,12 +185,14 @@ internal void
 os_window_set_fullscreen(OS_Handle handle, B32 fullscreen)
 {
   if(os_handle_match(handle, os_handle_zero())) {return;}
+  // TODO(rjf)
 }
 
 internal B32
 os_window_is_maximized(OS_Handle handle)
 {
   if(os_handle_match(handle, os_handle_zero())) {return 0;}
+  // TODO(rjf)
   return 0;
 }
 
@@ -188,12 +200,14 @@ internal void
 os_window_set_maximized(OS_Handle handle, B32 maximized)
 {
   if(os_handle_match(handle, os_handle_zero())) {return;}
+  // TODO(rjf)
 }
 
 internal B32
 os_window_is_minimized(OS_Handle handle)
 {
   if(os_handle_match(handle, os_handle_zero())) {return 0;}
+  // TODO(rjf)
   return 0;
 }
 
@@ -201,60 +215,77 @@ internal void
 os_window_set_minimized(OS_Handle handle, B32 minimized)
 {
   if(os_handle_match(handle, os_handle_zero())) {return;}
+  // TODO(rjf)
 }
 
 internal void
 os_window_bring_to_front(OS_Handle handle)
 {
   if(os_handle_match(handle, os_handle_zero())) {return;}
+  // TODO(rjf)
 }
 
 internal void
 os_window_set_monitor(OS_Handle handle, OS_Handle monitor)
 {
   if(os_handle_match(handle, os_handle_zero())) {return;}
+  // TODO(rjf)
 }
 
 internal void
 os_window_clear_custom_border_data(OS_Handle handle)
 {
   if(os_handle_match(handle, os_handle_zero())) {return;}
+  // TODO(rjf)
 }
 
 internal void
 os_window_push_custom_title_bar(OS_Handle handle, F32 thickness)
 {
   if(os_handle_match(handle, os_handle_zero())) {return;}
+  // TODO(rjf)
 }
 
 internal void
 os_window_push_custom_edges(OS_Handle handle, F32 thickness)
 {
   if(os_handle_match(handle, os_handle_zero())) {return;}
+  // TODO(rjf)
 }
 
 internal void
 os_window_push_custom_title_bar_client_area(OS_Handle handle, Rng2F32 rect)
 {
   if(os_handle_match(handle, os_handle_zero())) {return;}
+  // TODO(rjf)
 }
 
 internal Rng2F32
 os_rect_from_window(OS_Handle handle)
 {
-  return r2f32p(0, 0, 0, 0);
+  if(os_handle_match(handle, os_handle_zero())) {return r2f32p(0, 0, 0, 0);}
+  OS_LNX_Window *w = (OS_LNX_Window *)handle.u64[0];
+  XWindowAttributes atts = {0};
+  Status s = XGetWindowAttributes(os_lnx_gfx_state->display, w->window, &atts);
+  Rng2F32 result = r2f32p((F32)atts.x, (F32)atts.y, (F32)atts.x + (F32)atts.width, (F32)atts.y + (F32)atts.height);
+  return result;
 }
 
 internal Rng2F32
 os_client_rect_from_window(OS_Handle handle)
 {
-  return r2f32p(0, 0, 0, 0);
+  OS_LNX_Window *w = (OS_LNX_Window *)handle.u64[0];
+  XWindowAttributes atts = {0};
+  Status s = XGetWindowAttributes(os_lnx_gfx_state->display, w->window, &atts);
+  Rng2F32 result = r2f32p((F32)atts.x, (F32)atts.y, (F32)atts.x + (F32)atts.width, (F32)atts.y + (F32)atts.height);
+  return result;
 }
 
 internal F32
 os_dpi_from_window(OS_Handle handle)
 {
-  return 0;
+  // TODO(rjf)
+  return 96.f;
 }
 
 ////////////////////////////////
@@ -264,6 +295,7 @@ internal OS_HandleArray
 os_push_monitors_array(Arena *arena)
 {
   OS_HandleArray result = {0};
+  // TODO(rjf)
   return result;
 }
 
@@ -271,6 +303,7 @@ internal OS_Handle
 os_primary_monitor(void)
 {
   OS_Handle result = {0};
+  // TODO(rjf)
   return result;
 }
 
@@ -278,24 +311,28 @@ internal OS_Handle
 os_monitor_from_window(OS_Handle window)
 {
   OS_Handle result = {0};
+  // TODO(rjf)
   return result;
 }
 
 internal String8
 os_name_from_monitor(Arena *arena, OS_Handle monitor)
 {
+  // TODO(rjf)
   return str8_zero();
 }
 
 internal Vec2F32
 os_dim_from_monitor(OS_Handle monitor)
 {
+  // TODO(rjf)
   return v2f32(0, 0);
 }
 
 internal F32
 os_dpi_from_monitor(OS_Handle monitor)
 {
+  // TODO(rjf)
   return 96.f;
 }
 
@@ -305,7 +342,7 @@ os_dpi_from_monitor(OS_Handle monitor)
 internal void
 os_send_wakeup_event(void)
 {
-  
+  // TODO(rjf)
 }
 
 internal OS_EventList
@@ -467,19 +504,38 @@ os_get_events(Arena *arena, B32 wait)
 internal OS_Modifiers
 os_get_modifiers(void)
 {
+  // TODO(rjf)
   return 0;
 }
 
 internal B32
 os_key_is_down(OS_Key key)
 {
+  // TODO(rjf)
   return 0;
 }
 
 internal Vec2F32
 os_mouse_from_window(OS_Handle handle)
 {
-  return v2f32(0, 0);
+  if(os_handle_match(handle, os_handle_zero())) {return v2f32(0, 0);}
+  OS_LNX_Window *w = (OS_LNX_Window *)handle.u64[0];
+  Vec2F32 result = {0};
+  {
+    Window root_window = 0;
+    Window child_window = 0;
+    int root_rel_x = 0;
+    int root_rel_y = 0;
+    int child_rel_x = 0;
+    int child_rel_y = 0;
+    unsigned int mask = 0;
+    if(XQueryPointer(os_lnx_gfx_state->display, w->window, &root_window, &child_window, &root_rel_x, &root_rel_y, &child_rel_x, &child_rel_y, &mask))
+    {
+      result.x = child_rel_x;
+      result.y = child_rel_y;
+    }
+  }
+  return result;
 }
 
 ////////////////////////////////
@@ -488,7 +544,7 @@ os_mouse_from_window(OS_Handle handle)
 internal void
 os_set_cursor(OS_Cursor cursor)
 {
-  
+  // TODO(rjf)
 }
 
 ////////////////////////////////
@@ -511,11 +567,11 @@ os_graphical_message(B32 error, String8 title, String8 message)
 internal void
 os_show_in_filesystem_ui(String8 path)
 {
-  
+  // TODO(rjf)
 }
 
 internal void
 os_open_in_browser(String8 url)
 {
-  
+  // TODO(rjf)
 }
diff --git a/src/render/opengl/linux/render_opengl_linux.h b/src/render/opengl/linux/render_opengl_linux.h
index 8fcbd629..21069e8d 100644
--- a/src/render/opengl/linux/render_opengl_linux.h
+++ b/src/render/opengl/linux/render_opengl_linux.h
@@ -14,7 +14,7 @@
 //~ rjf: Decide On Backend
 
 #if !defined(R_OPENGL_LINUX_BACKEND)
-# define R_OPENGL_LINUX_BACKEND R_OPENGL_LINUX_BACKEND_GLX
+# define R_OPENGL_LINUX_BACKEND R_OPENGL_LINUX_BACKEND_EGL
 #endif
 
 ////////////////////////////////
diff --git a/src/scratch/ryan_scratch.c b/src/scratch/ryan_scratch.c
index aa195640..f84f5b24 100644
--- a/src/scratch/ryan_scratch.c
+++ b/src/scratch/ryan_scratch.c
@@ -73,9 +73,10 @@ frame(void)
     group.batches = r_batch_list_make(sizeof(R_Rect2DInst));
     group.params.xform = mat_3x3f32(1.f);
     group.params.clip = os_client_rect_from_window(window_os);
+    Vec2F32 mouse = os_mouse_from_window(window_os);
     R_Rect2DInst *inst = r_batch_list_push_inst(scratch.arena, &group.batches, 256);
     MemoryZeroStruct(inst);
-    inst->dst = r2f32p(30, 30, 100 ,100);
+    inst->dst = r2f32p(mouse.x+30, mouse.y+30, mouse.x+100, mouse.y+100);
     inst->src = r2f32p(0, 0, 1, 1);
     inst->colors[Corner_00] = inst->colors[Corner_01] = inst->colors[Corner_10] = inst->colors[Corner_11] = v4f32(1, 0, 0, 1);
     inst->corner_radii[Corner_00] = inst->corner_radii[Corner_01] = inst->corner_radii[Corner_10] = inst->corner_radii[Corner_11] = 8.f;