From b8031bb7d6d0bed33c058db20b58800e615538e3 Mon Sep 17 00:00:00 2001
From: Markus Sauermann <6299227+Sauermann@users.noreply.github.com>
Date: Wed, 5 Oct 2022 10:56:19 +0200
Subject: Code simplifications

1. Viewport::get_visible_rect().position is always zero.
So Control::get_window_rect is identical to Control::get_global_rect.
Remove Control::get_window_rect since it is not used in the source code.

2. sqrt(a * a) = abs(a) for doubles

3. Simplify affine_inverse combination

4. Simplify calculation in shaders
---
 servers/rendering/renderer_rd/shaders/canvas.glsl | 15 +--------------
 1 file changed, 1 insertion(+), 14 deletions(-)

(limited to 'servers/rendering/renderer_rd/shaders')

diff --git a/servers/rendering/renderer_rd/shaders/canvas.glsl b/servers/rendering/renderer_rd/shaders/canvas.glsl
index 4a18c7c052..8593e6b265 100644
--- a/servers/rendering/renderer_rd/shaders/canvas.glsl
+++ b/servers/rendering/renderer_rd/shaders/canvas.glsl
@@ -655,20 +655,7 @@ void main() {
 		if (i >= light_count) {
 			break;
 		}
-		uint light_base;
-		if (i < 8) {
-			if (i < 4) {
-				light_base = draw_data.lights[0];
-			} else {
-				light_base = draw_data.lights[1];
-			}
-		} else {
-			if (i < 12) {
-				light_base = draw_data.lights[2];
-			} else {
-				light_base = draw_data.lights[3];
-			}
-		}
+		uint light_base = draw_data.lights[i >> 2];
 		light_base >>= (i & 3) * 8;
 		light_base &= 0xFF;
 
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