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Easily Cutout An Image With A Pixel Shader On Windows

delphifiremonkeyshaderprogrammingmakecutoutforanyimage

In the previous example on Shader programming with Delphi FireMonkey, we created a texture feature to show images. So the material source manages the image bitmap.

In this sample, you will create this:

transparenttexture-5896379

We can do this by adjusting the texture itself and set all pixels outside of the circle to transparent. This needs a change to the texture. By utilizing a transformed pixel shader, you could make the cutout for any image.

Pixel Shaders

We can keep the same vertex shaders as the previous example. The pixel shaders have to be updated through:

gpu04-1649434

In this part no need to update the materials at the Delphi side since all changes are controlled by the shader.

embarcadero-delphi-firemonkey-shader-programming-delphi-programming-6700611

Be sure to check out the full blog post here on Grijjy blogs


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About author

Software Developer | CS(CyberSec) Undergrad at APU Malaysia | Delphi/C++ Builder Enthusiast | Microsoft Learn Student Ambassador | Microsoft Azure Certified
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