Academy Shaders Quiz

Questions covering the core concepts, tools, and real-world scenarios IT professionals encounter in Academy Shaders.

This category currently has 40 questions in the SERVBG quiz bank. Below are a few sample questions: the full interactive quiz shuffles through the whole set with instant scoring.

Sample questions

In the graphics pipeline vertex stage, rasteriser, fragment stage, which stage is NOT programmable?

Every stage became programmable in 2001
The fragment stage
The vertex stage
The rasteriser
Both programmable ends, only the driver is fixed

What is the one output a vertex shader is required to write?

A texture coordinate for every sampler
The depth value for the z-buffer
gl_FragColor, the final pixel colour
The triangle's surface normal
gl_Position, the clip-space position of the vertex

What is the one value a GLSL ES 1.00 fragment shader is required to write?

The vertex index it was generated from
gl_Position, a clip-space coordinate
The number of raymarch steps it used
gl_FragColor, a colour
A varying for the next stage to read

What makes a value a 'uniform' in a shader?

The GPU picks its value at random each frame
The CPU sets it once per draw call and it is identical for every fragment in that call
It is uniform in size, always exactly four bytes
It changes smoothly across the surface of each triangle
Each fragment computes its own copy of it

A varying is written per what, and read per what?