How to convert pixel coordinates of a texture image to texture coordinates on a quadrilateral geometry?

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@mirro187

How to convert pixel coordinates of a texture image to texture coordinates on a quadrilateral geometry?

Post more detail about the problems you’re having, if any, and what you’ve tried to resolve them.

This perhaps?:

• Quadrilateral Interpolation, Part 1 – Nathan Reed’s coding blog
• Quadrilateral Interpolation, Part 2 – Nathan Reed’s coding blog
• Proper color interpolation