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I have looked around a bit but can't find anything definitive on this. I'm using GUI.DrawTexture along with a GUI Group to move textureA behind textureB so that textureA looks like it's disappearing. However, textureB has transparency and a curve so using a simple rect from the GUI Group does not achieve the look. Is there a way to pass in alpha or color information from another texture in order to get a non-rect masking effect? I saw something about using the Graphics class along with a custom material which I will look into more. I don't know shader scripting very well so I am hoping there is a more simple approach that I am overlooking. Thanks! John Edit: Adding an image to help clarify my question.
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Tricky :). If the moving part (textureA) has no transparency, you could try using a transparent cutout material. There's an example of more or less what you'd need to do here, but your alpha channel would look more like this: Then, you'd just check the screen y-value of your object and adjust the alpha cutoff accordingly. That's the easiest way I know of to do it without a bunch of coding and pixel manipulation - hopefully someone else will come along with a more elegant solution :)
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Not sure I get what you're trying to do. You say you want to move a texture behind another, but I can't visualize what you mean. Can you include a couple screen captures of the beginning and end frame of what you want to do? When you say the texture is 'disappearing' I think fading - is that the case?
I added an image to help visualize. I need a GUI texture to move behind another GUI texture that has transparency and a curve. I want it to look like the moving texture is extending in/out from the top of the curve. Thanks for replying, I hope the image helps, I feel like I'm missing something simple.