3D Graphics: Crash Course Computer Science

The video tutorial explores the evolution from 2D to 3D graphics, focusing on key techniques like 3D projection, wireframe rendering, and the use of polygons and meshes. It delves into scanline rendering, anti-aliasing, occlusion handling, and z-buffering. Lighting, shading, and texture mapping are also covered, along with optimizations using GPUs for efficient rendering.

What is the process of converting 3D coordinates to a 2D plane called?

• Coordinate Flattening

• 2D Mapping

• 3D Projection

• 3D Rendering

In 3D graphics, why are triangles preferred over other shapes?

• They are easier to color

• They are faster to render

• They require less memory

• They unambiguously define a plane

What is the main difference between orthographic and perspective projection?

• Orthographic projection uses more colors

• Perspective projection shows parallel lines as converging

• Orthographic projection is faster

• Perspective projection is used for 2D graphics

What is the purpose of anti-aliasing in 3D graphics?

• To improve texture quality

• To enhance lighting effects

• To smooth out jagged edges

• To increase the polygon count

Which algorithm sorts polygons from farthest to nearest to handle occlusion?

• Painter's algorithm

• Z-buffering

• Scanline rendering

• Back-face culling

What is a common issue when two polygons have the same distance in z-buffering?

• Back-face culling

• Anti-aliasing

• Z-fighting

• Occlusion

What is the simplest lighting algorithm that makes polygon boundaries noticeable?

• Flat shading

• Texture mapping

• Phong shading

• Gouraud shading

What does texture mapping involve in 3D graphics?

• Mapping a texture image to a polygon

• Mapping colors to polygons

• Increasing polygon count

• Applying lighting effects

What is the role of a GPU in rendering 3D scenes?

• To handle user input

• To perform calculations in parallel

• To increase polygon count

• To store textures

What is the benefit of using a GPU over a CPU for 3D rendering?

• GPUs have more cores for parallel processing

• GPUs are cheaper

• GPUs are easier to program

• GPUs use less power