In-Class

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In-Class

A small in-class quiz/activity following our lecture. Goal is for you to understand the key takeaways from class!

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Can we allocate memory on the stack on the CPU before sending it to the GPU?

1 point

Yes, this is okay because when we ship data to the GPU we are making a copy. So this means the data will persist on the GPU, even when we leave scope and the memory would be reclaimed on the CPU end.

No, we must always allocate on the heap when sending data to the CPU.

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When I 'bind' to something in OpenGL, or do 'glUse' how should I interpret those commands?

1 point

Think of them as 'selecting' something that you want to use or modify in your graphics pipeline.

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Why do we add textures to triangles?

1 point

It's a way to add more 'data' into our scenes that is relatively cheap when compared to adding additional geometry. Typically a texture will be used to add surface detail to a triangle (though sometimes it may be used to compute or store additional information).

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Can we 'always' map a texture perfectly around geometry?

1 point

Yes, it will always work.

No, distortion can become a problem when wrapping a 2D texture around a 3D shape. The classic example is something cartographers have struggled with when making globes and accurately mapping countries on it without distorting their size to make them appear much larger or smaller than their actual size.

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