From f30b354f778f8516197204a92b2dae2b47dddd51 Mon Sep 17 00:00:00 2001
From: Emil Ernerfeldt <emilernerfeldt@gmail.com>
Date: Sat, 10 Oct 2020 11:39:39 +0200
Subject: [PATCH] [culling] Add debug option to ignore clip rectangles

---
 egui/src/context.rs           | 16 +++++++++++++---
 egui/src/paint/tessellator.rs |  9 +++++++++
 2 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/egui/src/context.rs b/egui/src/context.rs
index c4baae9d..9c4aedc1 100644
--- a/egui/src/context.rs
+++ b/egui/src/context.rs
@@ -617,11 +617,21 @@ impl Context {
 
 impl paint::PaintOptions {
     pub fn ui(&mut self, ui: &mut Ui) {
+        let Self {
+            anti_alias,
+            aa_size: _,
+            debug_paint_clip_rects,
+            debug_ignore_clip_rects,
+        } = self;
         use crate::widgets::*;
-        ui.add(Checkbox::new(&mut self.anti_alias, "Antialias"));
+        ui.add(Checkbox::new(anti_alias, "Antialias"));
         ui.add(Checkbox::new(
-            &mut self.debug_paint_clip_rects,
-            "Paint Clip Rects (debug)",
+            debug_paint_clip_rects,
+            "Paint clip rectangles (debug)",
+        ));
+        ui.add(Checkbox::new(
+            debug_ignore_clip_rects,
+            "Ignore clip rectangles (debug)",
         ));
     }
 }
diff --git a/egui/src/paint/tessellator.rs b/egui/src/paint/tessellator.rs
index 701d66c2..68252d3b 100644
--- a/egui/src/paint/tessellator.rs
+++ b/egui/src/paint/tessellator.rs
@@ -438,6 +438,8 @@ pub struct PaintOptions {
     pub aa_size: f32,
     /// Output the clip rectangles to be painted?
     pub debug_paint_clip_rects: bool,
+    /// If true, no clipping will be done
+    pub debug_ignore_clip_rects: bool,
 }
 
 impl Default for PaintOptions {
@@ -446,6 +448,7 @@ impl Default for PaintOptions {
             anti_alias: true,
             aa_size: 1.0,
             debug_paint_clip_rects: false,
+            debug_ignore_clip_rects: false,
         }
     }
 }
@@ -829,5 +832,11 @@ pub fn tessellate_paint_commands(
         }
     }
 
+    if options.debug_ignore_clip_rects {
+        for (clip_rect, _) in &mut jobs {
+            *clip_rect = Rect::everything();
+        }
+    }
+
     jobs
 }