This is a course project based on CUDA for CIS 565 GPU Programming. The standard rasterization pipeline was implemented as the following steps:

1. Vertex Shader;
2. Primitive Assembly;
3. Rasterization(including basic back face culling);
4. Fragment Shader;
5. Rendering(including anti-aliasing)
6. Write to framebuffer

Basic Graphics Pipeline and Features:

• Vertex Shading
• Primitive Assembly with support for triangle VBOs/IBOs
• Perspective Transformation
• Rasterization through either a scanline or a tiled approach
• Fragment Shading
• A depth buffer for storing and depth testing fragments
• Fragment to framebuffer writing
• A simple lighting/shading scheme with Lambert and Blinn-Phong in the fragment shader

Additional Features:

• Transformation feedback
• Back-face culling
• Atomic Compare and Swap for depth test
• Color interpretation between points on a primitive
• Anti-aliasing
• Both mouse-based and keyboard-based interactive camera support
• Multi-color lighting

In 22nd line of rasterizeKernels.h, the flag can be changed to 1 to use anti-aliasing mode as default.

#define ANTIALIASING 0

Mouse Interaction

Keyboard Interaction

• Depth in z-axis

• Transformation Feedback

• Color Interpolation

• Color Interpolation with Back Face Culling

• Flat Color with diffusion and specular reflection

• Anti-aliasing

Without anti-aliasing

With anti-aliasing

• Multi-color Lighting

This is the video of my CUDA rasterizer including mouse interaction and keyboard interaction

The youtube links are here if you cannot open the video in the markdown file: http://www.youtube.com/watch?v=rb--TBxSOmw

Here is the table for the performance evaluation when adding different features to the rasterized cow.

Note: the color interpolation without backface culling here is the default mode the z-depth mode and anti-aliasing and multi-color lighting all based on the color interpolation mode.

We can see that the back-face culling increase the frame per second a little bit while other features such as anti-aliasing, multi-color lighting all decrease the frame rate somehow.

• Basic Pipeline of Rasterization: http://cis565-fall-2013.github.io/lectures/10-14-Graphics-Pipeline.pptx
• Transformations from model to screen: http://www.opengl-tutorial.org/beginners-tutorials/tutorial-3-matrices/
• Phong-Blinn Specular Shading: http://en.wikipedia.org/wiki/Blinn%E2%80%93Phong_shading_model
• Atomic Compare and Swap: https://devtalk.nvidia.com/default/topic/471383/atomiccas-doesn-39-t-compile-33-/
• AtomicCAS: http://en.wikipedia.org/wiki/Compare-and-swap

Thanks a lot to Patrick and Liam for the preparation of this project. Thank you :)