CUDA Rasterizer

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University of Pennsylvania, CIS 565: GPU Programming and Architecture, Project 4

• Akshay Shah
• Tested on: Windows 10, i7-5700HQ @ 2.70GHz 16GB, GTX 970M 6GB (Personal Computer)

GPU Rasterizer

Renders:

Textures: with Bilinear Interpolation

Without Bilinear Filtering	With Bilinear Filtering

And Perspective correct texture coords

Without Perspective correct Texture	With Perspective correct Texture

Materials: Diffuse, Specular (Blinn-Phong), Toon Shading

Diffuse	Specular	Toon Shading
Different Primitives: Triangles (default), Lines (wireframe), Points

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Triangles	Lines	Points

CUDA summary and analysis

The following chart shows the approximate percentage time spent by each cuda function. It is clear that _rasterizePrims has the largest time spent because of the calculation of barycentric coords and perspective correct texture coords.

This following image shows the percentage time spent while doing the wireframe for the cow.gltf

Here however, we see that the time is most spent in initDepth.

And similarly with points

Credits and References

• Bilinear Filtering

• Blinn-Phong shading

• Toon shading

• Perspective Correct texture

• tinygltfloader by @soyoyo

• glTF Sample Models