Work on OpenGL rendering environment.

src/glutils.hpp

@@ -0,0 +1,36 @@
+#pragma once
+
+#include "LayerData.hpp"
+#include "utils.hpp"
+#include <GL/glut.h>
+
+namespace fmri {
+    /**
+     * Create a texture from an array of data.
+     *
+     * @param data
+     * @param width
+     * @param height
+     * @return A texture reference.
+     */
+    GLuint loadTexture(DType const * data, unsigned int width, unsigned int height);
+
+    /**
+     *
+     * @param type
+     * @param source
+     * @return
+     */
+    GLuint compileShader(GLenum type, char const * source);
+
+    /**
+     * Callback handler to handle resizing windows.
+     *
+     * This function resizes the rendering viewport so everything still
+     * looks proportional.
+     *
+     * @param w new Width
+     * @param h new Height.
+     */
+    void changeWindowSize(int w, int h);
+}