From 684543ec157102016c9ef955beab6e5122ebc29e Mon Sep 17 00:00:00 2001
From: martinfouilleul <martinfouilleul@gmail.com>
Date: Wed, 12 Jul 2023 15:46:52 +0200
Subject: [PATCH] [gl canvas] fix implicit boolean conversion error on some
 drivers

---
 src/glsl_shaders/segment_setup.glsl | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/glsl_shaders/segment_setup.glsl b/src/glsl_shaders/segment_setup.glsl
index 903eaf9..8efdcd8 100644
--- a/src/glsl_shaders/segment_setup.glsl
+++ b/src/glsl_shaders/segment_setup.glsl
@@ -340,7 +340,7 @@ int quadratic_roots_with_det(float a, float b, float c, float det, out float r[2
 
 	if(a == 0)
 	{
-		if(b)
+		if(b != 0)
 		{
 			count = 1;
 			r[0] = -c/b;
@@ -773,7 +773,7 @@ void cubic_setup(vec2 p[4], int pathIndex)
 	int rootCount = rootCountX + rootCountY;
 	for(int i=0; i<2; i++)
 	{
-		if(curve.ts[i].y)
+		if(curve.ts[i].y != 0)
 		{
 			roots[rootCount] = curve.ts[i].x / curve.ts[i].y;
 			rootCount++;