Add buffers related OpenGL functions.

1 files changed, 8 insertions, 2 deletions

diff --git a/src/graphicsmanager.cpp b/src/graphicsmanager.cpp
index 324337871..f7c877c1f 100644
--- a/src/graphicsmanager.cpp
+++ b/src/graphicsmanager.cpp
@@ -884,8 +884,7 @@ void GraphicsManager::initOpenGLFunctions()
         if (!mglPopGroupMarker)
             assignFunction(glPopGroupMarker, "glPopGroupMarker");
     }
-
-    if (checkGLVersion(3, 0) || supportExtension("GL_ARB_vertex_array_object"))
+    if (checkGLVersion(2, 1) && supportExtension("GL_ARB_vertex_array_object"))
     {
         assignFunction(glGenVertexArrays, "glGenVertexArrays");
         assignFunction(glBindVertexArray, "glBindVertexArray");
@@ -895,6 +894,13 @@ void GraphicsManager::initOpenGLFunctions()
         assignFunction(glDisableVertexAttribArray,
             "glDisableVertexAttribArray");
     }
+    if (checkGLVersion(1, 5))
+    {
+        assignFunction(glGenBuffers, "glGenBuffers");
+        assignFunction(glDeleteBuffers, "glDeleteBuffers");
+        assignFunction(glBindBuffer, "glBindBuffer");
+        assignFunction(glBufferData, "glBufferData");
+    }
 
 #ifdef WIN32
     assignFunction(wglGetExtensionsString, "wglGetExtensionsStringARB");