From 8a36fe10b163bbb5b4cf3fffdfc03833177667f1 Mon Sep 17 00:00:00 2001
From: Anakin <Battlefrontler@t-online.de>
Date: Sat, 5 Nov 2016 13:36:28 +0100
Subject: [PATCH] allocate memory for the buffer before using it

---
 MshViewer/Source/OpenGlController.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/MshViewer/Source/OpenGlController.cpp b/MshViewer/Source/OpenGlController.cpp
index 1da567b..11d3139 100644
--- a/MshViewer/Source/OpenGlController.cpp
+++ b/MshViewer/Source/OpenGlController.cpp
@@ -11,7 +11,7 @@
 
 #define VERTEX_SHADER "Shader/TextureShader.vert"
 #define FRAGMENT_SHADER "Shader/TextureShader.frag"
-
+#define MAX_MODEL_COUNT 1000
 
 /////////////////////////////////////////////////////////////////////////
 // public constructor/destructor
@@ -113,6 +113,9 @@ void OpenGLController::processInit()
 	glVertexAttribDivisor(4, 1);
 	glVertexAttribDivisor(5, 1);
 
+	// set buffer size
+	glBufferData(GL_ARRAY_BUFFER, MAX_MODEL_COUNT * sizeof(glm::mat4), NULL, GL_STREAM_DRAW);
+
 	// get the painter ready
 	try
 	{