Fix multiple vertex buffers using the same data

Need to call glVertexPointer/glTexCoordPointer/glColorPointer every time
we render.

1 files changed, 2 insertions, 0 deletions

diff --git a/include/mgl/gl.h b/include/mgl/gl.h
index a13406e..c9a709d 100644
--- a/include/mgl/gl.h
+++ b/include/mgl/gl.h
@@ -67,6 +67,8 @@ typedef struct {
     void (*glAttachShader)(unsigned int program, unsigned int shader);
     int (*glGetUniformLocation)(unsigned int program, const char *name);
     void (*glUniform2fv)(int location, int count, const float *value);
+    unsigned int (*glGetError)(void);
+    const unsigned char* (*glGetString)(unsigned int name);
 
     /* Optional*/
     void (*glXSwapIntervalEXT)(Display * dpy, GLXDrawable drawable, int interval);