still trying to fix the problem

MshViewer/Source/OpenGlController.cpp

@@ -113,9 +113,6 @@ 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
 	{
@@ -382,14 +379,26 @@ void OpenGLController::loadMsh(const char * path)
 		tempBufferData.data(),
 		GL_STATIC_DRAW
 	);
+	glBindBuffer(GL_ARRAY_BUFFER, 0);
 
-	//TODO: limit to max model count
+	// set instance buffer data
 	std::vector<glm::mat4> tempMVPs;
 
 	for (int i = 0; i < vModels.size(); i++)
 		tempMVPs.push_back(getMVPMatrix(i));
 
-	glBindBuffer(GL_UNIFORM_BUFFER, gluiInstanceBufferID);
-	glBufferSubData(GL_UNIFORM_BUFFER, sizeof(glm::mat4) * vModels.size(), NULL, tempMVPs.data());
-	glBindBuffer(GL_UNIFORM_BUFFER, 0);
+	glBindBuffer(GL_ARRAY_BUFFER, gluiInstanceBufferID);
+	glBufferData(
+		GL_ARRAY_BUFFER,
+		vModels.size() > MAX_MODEL_COUNT? MAX_MODEL_COUNT * sizeof(glm::mat4) : vModels.size() * sizeof(glm::mat4),
+		tempMVPs.data(),
+		GL_STREAM_DRAW
+	);
+	glBindBuffer(GL_ARRAY_BUFFER, 0);
+
+	
+
+	//glBindBuffer(GL_UNIFORM_BUFFER, gluiInstanceBufferID);
+	//glBufferSubData(GL_UNIFORM_BUFFER, sizeof(glm::mat4) * vModels.size(), NULL, tempMVPs.data());
+	//glBindBuffer(GL_UNIFORM_BUFFER, 0);
 }