What is the primary purpose of the OpenGL function glViewport? a) set the color right b) define the region of the window to render to c) enable depth testing d) bind a texture
Understand the Problem
The question is asking for the primary purpose of the OpenGL function glViewport, specifically which option correctly defines what this function does among the provided choices.
Answer
Define the region of the window to render to.
The primary purpose of the OpenGL function glViewport is to define the region of the window to render to.
Answer for screen readers
The primary purpose of the OpenGL function glViewport is to define the region of the window to render to.
More Information
The function glViewport specifies how to map the normalized device coordinates to window coordinates, effectively defining which part of the window is used for rendering.
Tips
A common mistake is confusing glViewport with functions that set color or enable features like depth testing. GlViewport only sets the rendering region.
Sources
- glViewport - OpenGL 4 Reference Pages - Khronos Registry - registry.khronos.org
- 3D Graphics with OpenGL - The Basic Theory - .ntu.edu.sg
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