From 0fca7e2045d8f4a7c469b6fa87414cfec78cd927 Mon Sep 17 00:00:00 2001
From: Michael Bosse <metiscus@gmail.com>
Date: Tue, 17 Oct 2017 17:16:55 -0400
Subject: [PATCH] Adds protection of the texture matrix stack which allows the
 user to use sf::Sprites with this code unmodified otherwise

---
 demo/sfml_opengl2/nuklear_sfml_gl2.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/demo/sfml_opengl2/nuklear_sfml_gl2.h b/demo/sfml_opengl2/nuklear_sfml_gl2.h
index a4a2013..9649ec0 100644
--- a/demo/sfml_opengl2/nuklear_sfml_gl2.h
+++ b/demo/sfml_opengl2/nuklear_sfml_gl2.h
@@ -81,6 +81,9 @@ nk_sfml_render(enum nk_anti_aliasing AA)
     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 
     glViewport(0, 0, (GLsizei)window_width, (GLsizei)window_height);
+    glMatrixMode(GL_TEXTURE);
+    glPushMatrix();
+    glLoadIdentity();
     glMatrixMode(GL_PROJECTION);
     glPushMatrix();
     glLoadIdentity();
@@ -165,6 +168,8 @@ nk_sfml_render(enum nk_anti_aliasing AA)
     glDisable(GL_TEXTURE_2D);
 
     glBindTexture(GL_TEXTURE_2D, 0);
+    glMatrixMode(GL_TEXTURE);
+    glPopMatrix();
     glMatrixMode(GL_MODELVIEW);
     glPopMatrix();
     glMatrixMode(GL_PROJECTION);