From 49aa3668da58a793e434807b8e2d167824661225 Mon Sep 17 00:00:00 2001
From: Steven Lovegrove <stevenlovegrove@gmail.com>
Date: Tue, 23 Aug 2016 09:48:48 -0700
Subject: [PATCH] Revert "Use glTexImage2D rather than glTexSubImage2D when
 uploading a full texture"

This was causing some code to break with GL_INVALID_OPERATION under some conditions.
See https://www.opengl.org/wiki/Common_Mistakes#Updating_a_texture

This reverts commit 74becf77a9f86b3176250c32a5cf385faedb4909.
---
 include/pangolin/gl/gl.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/pangolin/gl/gl.hpp b/include/pangolin/gl/gl.hpp
index eec13e15c..93afbdf3b 100644
--- a/include/pangolin/gl/gl.hpp
+++ b/include/pangolin/gl/gl.hpp
@@ -194,7 +194,7 @@ inline void GlTexture::Upload(
     GLenum data_format, GLenum data_type
 ) {
     Bind();
-    glTexImage2D(GL_TEXTURE_2D, 0, internal_format, width, height, 0, data_format, data_type, data);
+    glTexSubImage2D(GL_TEXTURE_2D,0,0,0,width,height,data_format,data_type,data);
     CheckGlDieOnError();
 }