# 3.8.4 Set ST Value for Each Vertex

As a final step, you need to set the texture coordinates (S,T values) of the mapping data to each vertex and execute the texture mapping.

Then you can map the texture on the surface.

Use the following N64 functions to complete this step of the process:

- Use the gSPVertex function to set the vertex information.
- Use the gSPModifyVertex function to modify the vertex information.

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Last Updated March, 1999