# Set vertex attributes
## glVertexAttribPointer() Function Signature
void glVertexAttribPointer(
GLuint index,
GLint size,
GLenum type,
GLboolean normalized,
GLsizei stride, // vertex stride
const void * pointer); // attribute start pointer
## Modify vertex position attribute
now we have 6 floats for each vertex
```cpp
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(float) * 6, 0);
```
## Add colour attribute
```cpp
// set colour attributes
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(float) * 6, (void *) (sizeof(float) * 3));
```
We are still getting this
To render vertex colour we need to write shaders
