20+ Top Interview Questions and Answers (2024)

Ques 1

What is rasterization in computer graphics?

Rasterization is the process of converting vector graphics into raster images. It involves determining which pixels to illuminate based on the geometric shapes in the scene.

Example:

In a 3D rendering pipeline, rasterization converts 3D primitives like triangles into 2D pixel representations for display.

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Ques 2

Explain the concept of texture mapping in computer graphics.

Texture mapping involves applying a 2D image (texture) onto a 3D surface to enhance its appearance. This is commonly used for adding details like colors, patterns, or images to objects.

Example:

Mapping a brick texture onto a 3D wall model to give it a realistic appearance.

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Ques 3

What is a framebuffer in computer graphics?

A framebuffer is a memory buffer that holds pixel values for display. It represents the image being rendered and is often used in conjunction with a display device.

Example:

Storing pixel values in a framebuffer before sending them to the monitor for display.

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Ques 4

What is the difference between graphics API and graphics hardware?

A graphics API (Application Programming Interface) is a set of tools and functions for interacting with graphics hardware. Graphics hardware, on the other hand, refers to the physical components responsible for rendering graphics.

Example:

OpenGL and DirectX are examples of graphics APIs, while a GPU (Graphics Processing Unit) is an example of graphics hardware.

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Ques 5

What is a vertex buffer in computer graphics?

A vertex buffer is a region of memory used to store vertex data, such as positions, colors, and texture coordinates. It is a crucial component in efficient rendering pipelines.

Example:

Storing 3D vertex information in a vertex buffer for rendering a complex 3D model.

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Ques 6

Explain the concept of culling in computer graphics.

Culling is the process of excluding objects or parts of objects that are not visible in the final image. This optimization helps improve rendering performance.

Example:

Removing back-facing triangles during rendering to enhance efficiency through culling.

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Interview Questions and Answers

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Interview Questions and Answers

Freshers / Beginner level questions & answers

What is rasterization in computer graphics?

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Explain the concept of texture mapping in computer graphics.

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What is a framebuffer in computer graphics?

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What is the difference between graphics API and graphics hardware?

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What is a vertex buffer in computer graphics?

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Explain the concept of culling in computer graphics.

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