Tuesday April 2nd, 11:59pm
You will add additional features to your ray tracer from Project 3-1, including more complicated materials, environment lights, and depth of field effects. This project is of comparable size to 3-1, so plan accordingly and leave time for renders/writeup.
- Part 1: Mirror and Glass Materials
- Part 2: Microfacet Material
- Part 3: Environment Light
- Part 4: Depth of Field
You'll also want to read these articles:
Accept the assignment through the link posted on piazza, and clone from your private repo using the command:
git clone <YOUR_PRIVATE_REPO>
As before, use cmake and make inside a build/ directory to create the executable (how to build and submit).
Please consult the project 3-1 spec for details on the user interface. Here are some old and new command line flags you'll want to pay attention to:
-e some_map.exrloads an environment light .exr image file (part 3)
-b 1.23sets the lens radius to 1.23 (part 4)
-d 4.56sets the focal distance to 4.56 (part 4)
As well as two new keyboard commands:
- k | l: Increase/Decrease the camera lens radius
- ; | ': Increase/Decrease the focal distance
Also please use the "cell render" mode to debug, where you can interactively click and drag to select a small region of the screen to be rendered. Press c (after pressing r) to toggle this mode in the GUI.
Integrating Previous Code
For Project 3-2, you will need a working implentation of Project 3-1. You have the option of either porting your code from Project 3-1, or using pre-compiled binaries generated from the staff solution.
Using Your Own 3-1 Code
To use your own code, set the build option BUILD_3-1 to ON in CMakeLists.txt. Then, you'll need to copy over the following files from your previous assignment, and place them in your src/ directory.
- Part 1: triangle.cpp, sphere.cpp (place in src/static_scene directory)
- Part 2: bvh.cpp, bbox.cpp
Additionally, you will have to copy specific functions from their old files in the previous assigment into part1_code.cpp:
- From pathtracer.cpp
- From bsdf.cpp
- From camera.cpp
Using the Staff Library
To use the provided library, set the build option BUILD_3-1 to OFF in CMakeLists.txt. This will tell the generated makefiles to ignore part1_code.cpp, triangle.cpp, sphere.cpp, bvh.cpp, and bbox.cpp, and include the library that matches your system instead. Note that the staff binary will generate a small watermark on the corner of your image.
When you finish Project 3-2, you can basically render anything, so show it off! Make some fancy scenes and materials, and play with the lens! Again, be creative!