From b1d432413a7c5744e02a319a347c295c19980237 Mon Sep 17 00:00:00 2001
From: MihailRis <mexaruc@gmail.com>
Date: Tue, 28 Nov 2023 12:50:06 +0300
Subject: [PATCH] scissor test fix

---
 src/window/Window.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/window/Window.cpp b/src/window/Window.cpp
index eccdb44b..ad221942 100644
--- a/src/window/Window.cpp
+++ b/src/window/Window.cpp
@@ -178,7 +178,9 @@ void Window::pushScissor(vec4 area) {
 	if (area.z < 0.0f || area.w < 0.0f) {
 		glScissor(0, 0, 0, 0);
 	} else {
-		glScissor(area.x, Window::height-area.w, area.z-area.x, area.w-area.y);
+		glScissor(area.x, Window::height-area.w, 
+				  std::max(0, int(area.z-area.x)), 
+				  std::max(0, int(area.w-area.y)));
 	}
 	scissorArea = area;
 }
@@ -193,7 +195,9 @@ void Window::popScissor() {
 	if (area.z < 0.0f || area.w < 0.0f) {
 		glScissor(0, 0, 0, 0);
 	} else {
-		glScissor(area.x, Window::height-area.w, area.z-area.x, area.w-area.y);
+		glScissor(area.x, Window::height-area.w, 
+				  std::max(0, int(area.z-area.x)), 
+				  std::max(0, int(area.w-area.y)));
 	}
 	if (scissorStack.empty()) {
 		glDisable(GL_SCISSOR_TEST);