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-1
votes
1answer
291 views

XNA changing color alpha

I know I can take a color and multiply it by a float to reduce its alpha like that: Color color = Color.Green * 0.15f; But how do I return the color's alpha to it's original value? I tried doing ...
3
votes
0answers
38 views

Bitmap font engine: When is color modulation not supported?

I am developing a bitmap font renderer for a 2D game using SDL 2. (If it matters, I'm using Debian 8 "jessie".) I had planned on storing the glyphs as a grayscale image, translating gray levels to ...
3
votes
0answers
119 views

Render on texture with alpha 0 for the background colour

Sorry if the question is stupid but I am very new to opengl. I render on a target a scene with a couple of object on a background that is nothing more than the clear colour (which is 0.0,0.0,0.0,0.0)...
1
vote
0answers
19 views

(GameMaker) Smooth scaling and transparency while zooming

My game has a zoom function. There is a man in a spaceship, we can see the interior of the room room from side on as the outside is totally transparent. When I zoom out I want the outside of the ...
0
votes
0answers
25 views

Unity alpha of all parented canvas groups

I'm codin aberration effect for Unity UI. It's works great, but I wish to control aberration intensity via rendered object's alpha. So for example if i have parented canvas group with alpha 0.5 I ...
0
votes
0answers
53 views

DDS DXT5 texture doesn't render alpha correctly

I have an issue with how dxt5 textures render alpha. I have a source png with alpha gradients which is converted to dds with NVidia tools. Then is loaded in engine correctly but shows alpha pixels ...
0
votes
0answers
123 views

How to put OpenGL in a state for drawing blended, colored, nontextured polys?

Using OpenGL1.1 (sadly) I'm trying to draw a cube, which is colored and alpha blended. It is instead showing up as opaque black. Even without including alpha in the color it still shows up as opaque ...