1 files changed, 20 insertions, 0 deletions
diff --git a/src/boring_parts.cc b/src/boring_parts.cc
index 5e240c2..3973c23 100644
--- a/src/boring_parts.cc
+++ b/src/boring_parts.cc
@@ -103,3 +103,23 @@ int initOpenCL() {
 }
 #endif /*HAS_OPENCL*/
 
+bool updateGLProjectionMatrix(Glib::RefPtr<Gdk::GL::Context> glCtx, Glib::RefPtr<Gdk::GL::Window> glWin, int width, int height) {
+
+	GLdouble aspect = (GLdouble) width/height;
+
+	// *** OpenGL BEGIN ***
+	if (!glWin->gl_begin(glCtx)) return false;
+
+	glViewport(0, 0, width, height);
+	glMatrixMode(GL_PROJECTION);
+	glLoadIdentity();
+	gluPerspective(60.0, aspect, 0.1, 10.0);
+	glMatrixMode(GL_MODELVIEW);
+
+	glWin->gl_end();
+	// *** OpenGL END ***
+
+	return true;
+
+}
+