Draw every frame instead of x11 expose, enable vsync (if available)

1 files changed, 17 insertions, 0 deletions

diff --git a/include/mgl/gl.h b/include/mgl/gl.h
index 1791059..b5b6ca1 100644
--- a/include/mgl/gl.h
+++ b/include/mgl/gl.h
@@ -1,11 +1,28 @@
 #ifndef MGL_GL_H
 #define MGL_GL_H
 
+typedef struct _XVisualInfo _XVisualInfo;
+typedef struct _XDisplay Display;
+typedef struct __GLXcontextRec *GLXContext;
+typedef unsigned long GLXDrawable;
+
 typedef struct {
     void *handle;
+
+    _XVisualInfo* (*glXChooseVisual)(Display *dpy, int screen, int *attribList);
+    GLXContext (*glXCreateContext)(Display *dpy, _XVisualInfo *vis, GLXContext shareList, int direct);
+    void (*glXDestroyContext)(Display *dpy, GLXContext ctx);
+    int (*glXMakeCurrent)(Display *dpy, GLXDrawable drawable, GLXContext ctx);
+    void (*glXSwapBuffers)(Display *dpy, GLXDrawable drawable);
+
     void (*glViewport)(int x, int y, int width, int height);
     void (*glClearColor)(float red, float green, float blue, float alpha);
     void (*glClear)(unsigned int mask);
+
+    /* Optional*/
+    void (*glXSwapIntervalEXT)(Display * dpy, GLXDrawable drawable, int interval);
+    int (*glXSwapIntervalMESA)(unsigned int interval);
+    int (*glXSwapIntervalSGI)(int interval);
 } mgl_gl;
 
 int mgl_gl_load(mgl_gl *self);