CS 5610/6610 - Spring 2025 - Interactive Computer Graphics

Project 5 - Render Buffers

In this project we will explore the render-to-texture features of OpenGL.

Requirements

• Your program must take the name of the .obj file as its first command-line argument.
• The object should be rendered using the diffuse texture, if one is specified in the mtl file.
• Instead of rendering the object directly to the OpenGL viewport, the object should be renderered to a texture via a render buffer.
  You can use the GLRenderTexture class for generating and using a render buffer.
• Display the rendered texture by mapping it on a square-shaped plane.
• As before, left mouse button (and drag) should adjust the camera angles, and right mouse button (and drag) should adjust the camera distance, used for rendering the object to the texture.
• If the ALT/Option key is pressed, the left and right mouse buttons (and drag) should control the same view parameters for rendering the plane.
• Add some small constant to color of the plane to separate it from the background color.

An example view.

The teapot image is a texture on the plane.

Additional Requirements for CS 6610 Students

• The rendered texture should use bilinear filtering for magnification and mip-mapping with anisotropic filtering for minification.