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[1.7.10]How would I make an image inside a gui more transparent?

starwarsmace

By starwarsmace
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starwarsmace Diamond Finder

starwarsmace

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So I need to make an image that fades away. I know how to do it with strings by changing the alpha in the hex number. Would I use the OpenGl's color4f function, to make it more transparent? Or is there an easier way, or would that not work.

I'm back from being gone for... I think its been about a year. I'm pretty sure nobody remembers me, but hello anybody who does!

coolAlias Reality Controller

coolAlias

Posted
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First of all, you need to make sure that your image file has an alpha layer, which you can add with any decent image editor (such GIMP, PhotoShop, etc.).

 

Then you need to use GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA) before you render your image. See example.

 

This method will render the png with however much alpha transparency you gave it in your editor, but I'm sure there is a GL function that will let you adjust it dynamically.

starwarsmace Diamond Finder

starwarsmace

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First of all, you need to make sure that your image file has an alpha layer, which you can add with any decent image editor (such GIMP, PhotoShop, etc.).

 

Then you need to use GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA) before you render your image. See example.

 

This method will render the png with however much alpha transparency you gave it in your editor, but I'm sure there is a GL function that will let you adjust it dynamically.

Well I need it to fade slowly. So Im not sure if I have an alpha layer, will let me fade it away, unless I can find a GL function for it.

I'm back from being gone for... I think its been about a year. I'm pretty sure nobody remembers me, but hello anybody who does!

TheGreyGhost Reality Controller

TheGreyGhost

Posted
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Hi

 

Yes the OpenGL color4f should work.  Create your image with 100% alpha on the visible parts, turn on alpha blending as per Alias' example, set GL11.glColor4f with your alpha, and it should be fine.  If it doesn't show us your code and a screenshot.

 

-TGG

starwarsmace Diamond Finder

starwarsmace

Posted
  • Author
Posted

Hi

 

Yes the OpenGL color4f should work.  Create your image with 100% alpha on the visible parts, turn on alpha blending as per Alias' example, set GL11.glColor4f with your alpha, and it should be fine.  If it doesn't show us your code and a screenshot.

 

-TGG

Alright. Thanks.

Offtopic:

 

I love how even though TheGreyGhost, has one of the best tutorials online about modding; CoolAlias, with his awesome tutorials and mods; jabelar, also with his awesome tutorials; diesieben07, with his awesome mods, are all really famous, in their own way, yet still help out the forge community.  Thank you guys, for all your wonderful help!

I'm back from being gone for... I think its been about a year. I'm pretty sure nobody remembers me, but hello anybody who does!

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