如何在XNA中获取和设置像素数据？

Question

I have a texture2D where I want to get the color of a specified pixel. Do something with it and put a new color in an other texture2D.

I will need to do this with all the pixels in the texture. How can I do this.

No pixel shader's please. It need to be in C#

Answer 1

Texture2D类包含GetData和SetData方法，它们应该完全符合您的要求。

Answer 2

I found my problem.

When I was trying to get the color of a pixel the Alpha value of the color was 0. This means that the color would be completely transparent. To solve it I just needed to change the Alpha value to 255.

I think that this happened because I am using an jpg file. Jpg file's do not support Alpha values.