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[1.7.10] Transparency in GUI?


Bugzoo

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PNG's support transparency, however I'm not sure what alpha values Minecraft accepts for GUI's. Just try making the GUI texture transparent in paint.net/gimp/photoshop/whatever. MSPaint doesn't support transparency as far as I'm aware (it might support it these days but it never used to).

 

EDIT: The doesn't seem to work, neither does modifying:

 

GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);

 

And lowering the alpha values.

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You can do it ether by adjusting the image or using GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F); but you also need to enable glBlend for it to work.

GL11.glPushMatrix();
GL11.glEnable(GL11.GL_BLEND);
OpenGlHelper.glBlendFunc(770, 771, 1, 0);
GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
GL11.glColor4f(1.0F, 1.0F, 1.0F, 0.5F);

drawTexturedModalRect();

GL11.glPopMatrix();

 

Im not sure exactly what the glBlend Functions do because there arnt really any tutorials on GL11 that i have been able to find.

I am the author of Draconic Evolution

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Im not sure exactly what the glBlend Functions do because there arnt really any tutorials on GL11 that i have been able to find.

 

Unity has one of the better explanations.  Its talking about shader code, but GL11 uses the same parameters.

http://docs.unity3d.com/Manual/SL-Blend.html

 

It's still bare-bones, but it does have the four most commonly used blends listed out.

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