diff --git a/kitty/gl.h b/kitty/gl.h
index 80d9eda49..0676fc94a 100644
--- a/kitty/gl.h
+++ b/kitty/gl.h
@@ -536,33 +536,6 @@ GetTexImage(PyObject UNUSED *self, PyObject *args) {
     Py_RETURN_NONE;
 }
 
-static PyObject* 
-NamedBufferData(PyObject UNUSED *self, PyObject *args) {
-    int usage;
-    unsigned long size, target;
-    PyObject *address;
-    if (!PyArg_ParseTuple(args, "kkO!i", &target, &size, &PyLong_Type, &address, &usage)) return NULL;
-    void *data = PyLong_AsVoidPtr(address);
-    if (data == NULL) { PyErr_SetString(PyExc_TypeError, "Not a valid data pointer"); return NULL; }
-    Py_BEGIN_ALLOW_THREADS;
-#ifdef glNamedBufferData
-#ifdef __APPLE__
-    if(false) {
-#else
-    if(GLEW_VERSION_4_5) {
-#endif
-        glNamedBufferData(target, size, data, usage);
-    } else {
-        glBindBuffer(GL_TEXTURE_BUFFER, target); glBufferData(GL_TEXTURE_BUFFER, size, data, usage); glBindBuffer(GL_TEXTURE_BUFFER, 0);
-    }
-#else
-        glBindBuffer(GL_TEXTURE_BUFFER, target); glBufferData(GL_TEXTURE_BUFFER, size, data, usage); glBindBuffer(GL_TEXTURE_BUFFER, 0);
-#endif
-    Py_END_ALLOW_THREADS;
-    CHECK_ERROR;
-    Py_RETURN_NONE;
-}
-
 static PyObject* 
 GetBufferSubData(PyObject UNUSED *self, PyObject *args) {
     unsigned long size, target, offset;
@@ -825,7 +798,6 @@ int add_module_gl_constants(PyObject *module) {
     METH(CopyImageSubData, METH_VARARGS) \
     METH(TexSubImage3D, METH_VARARGS) \
     METH(GetTexImage, METH_VARARGS) \
-    METH(NamedBufferData, METH_VARARGS) \
     METH(GetBufferSubData, METH_VARARGS) \
     METH(BlendFunc, METH_VARARGS) \
     METH(Finish, METH_NOARGS) \
diff --git a/kitty/shaders.py b/kitty/shaders.py
index 9e1984dfa..e6c1eb8fa 100644
--- a/kitty/shaders.py
+++ b/kitty/shaders.py
@@ -23,9 +23,9 @@ from .fast_data_types import (
     glDeleteShader, glDeleteTexture, glEnableVertexAttribArray, glGenBuffers,
     glGenTextures, glGenVertexArrays, glGetAttribLocation, glGetBufferSubData,
     glGetIntegerv, glGetProgramInfoLog, glGetProgramiv, glGetShaderInfoLog,
-    glGetShaderiv, glGetUniformLocation, glLinkProgram, glNamedBufferData,
-    glPixelStorei, glShaderSource, glTexBuffer, glTexParameteri,
-    glTexStorage3D, glTexSubImage3D, glUseProgram, glVertexAttribDivisor,
+    glGetShaderiv, glGetUniformLocation, glLinkProgram, glPixelStorei,
+    glShaderSource, glTexBuffer, glTexParameteri, glTexStorage3D,
+    glTexSubImage3D, glUseProgram, glVertexAttribDivisor,
     glVertexAttribPointer, replace_or_create_buffer
 )
 from .fonts.render import render_cell
@@ -287,7 +287,7 @@ class ShaderProgram:
 
     def send_vertex_data(self, name, data, usage=GL_STATIC_DRAW):
         bufid = self.buffers[name]
-        glNamedBufferData(bufid, sizeof(data), addressof(data), usage)
+        buffer_manager.set_data(bufid, data, usage=usage)
 
     def __hash__(self) -> int:
         return self.program_id