From afb96278d9b7de102e519ef47fc7ce8d6becb622 Mon Sep 17 00:00:00 2001
From: kallaballa <amir@viel-zu.org>
Date: Wed, 14 Jun 2023 14:57:07 +0200
Subject: [PATCH] comment

---
 modules/v4d/src/detail/glcontext.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/modules/v4d/src/detail/glcontext.cpp b/modules/v4d/src/detail/glcontext.cpp
index 8d3b37172..dae2e8438 100644
--- a/modules/v4d/src/detail/glcontext.cpp
+++ b/modules/v4d/src/detail/glcontext.cpp
@@ -29,6 +29,7 @@ void GLContext::render(std::function<void(const cv::Size&)> fn) {
             FrameBufferContext::GLScope glScope(fbCtx(), GL_FRAMEBUFFER);
             glClear(GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
 #ifdef __EMSCRIPTEN__
+            //Preserve the clear color state though it is a bit costly. We don't want to interfere.
             GLfloat cColor[4];
             glGetFloatv(GL_COLOR_CLEAR_VALUE, cColor);
             glClearColor(0,0,0,0);