# HG changeset patch
# User frosch <frosch@openttd.org>
# Date 2021-03-21 17:38:51
# Node ID fd4abe5cd86fa5c91b20160abe5162e80da35dbd
# Parent  1d88c0ec438b70ae9be11162e1e93e8f3adbf3f7

Fix f0f96e31: [OpenGL] warning: comparison of integer expressions of different signedness. (#8881)

diff --git a/src/video/opengl.cpp b/src/video/opengl.cpp
--- a/src/video/opengl.cpp
+++ b/src/video/opengl.cpp
@@ -887,7 +887,7 @@ template <class T>
 static void ClearPixelBuffer(size_t len, T data)
 {
 	T *buf = reinterpret_cast<T *>(_glMapBuffer(GL_PIXEL_UNPACK_BUFFER, GL_READ_WRITE));
-	for (int i = 0; i < len; i++) {
+	for (size_t i = 0; i < len; i++) {
 		*buf++ = data;
 	}
 	_glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER);