The SDL forums have moved to discourse.libsdl.org.
This is just a read-only archive of the previous forums, to keep old links working.

[SDL2]-Transparency Fails After Window Resize?

Hi,

My team and I are developing a new 2d video game engine based on SDL 2.

We have found a problem:
On Windows 8 when the SDL 2 window is resized, texture alpha transparency fails?
(on window resize, alpha transparency is constantly fully opaque)

Anyone know why this occurs and know of a solution?
Thanks!

If you want to look at the source code or run the Windows binary then download from below URL:
http://16bitsoft.com/V2/Files/SDL2/TC4/Alpha/SDL2-TC4_Alpha1.zip

I think I have a fix for this.

Can you try the attached patch?


On Sat, Aug 17, 2013 at 2:53 AM, JeZ-l-Lee wrote:

Hi,

Thanks for the reply.

How do I patch my SDL - I am using the already compiled Windows version from the website?

I don't know how to patch it.

JeZ+Lee

The idea is that you build it yourself from source, and incorporate the patch.



From: JeZ-l-Lee
To:
Sent: Saturday, August 17, 2013 10:56 AM
Subject: Re: [SDL] [SDL2]-Transparency Fails After Window Resize?


Hi,

Thanks for the reply.

How do I patch my SDL - I am using the already compiled Windows version from the website?

I don't know how to patch it.

JeZ+Lee










Sam Lantinga wrote: I think I have a fix for this.

Can you try the attached patch?


On Sat, Aug 17, 2013 at 2:53 AM, JeZ-l-Lee <> wrote:







Quote: [SDL2]-Transparency Fails After Window Resize?

Hi,

My team and I are developing a new 2d video game engine based on SDL 2.

We have found a problem:
On Windows 8 when the SDL 2 window is resized, texture alpha transparency fails?
(on window resize, alpha transparency is constantly fully opaque)

Anyone know why this occurs and know of a solution?
Thanks!

If you want to look at the source code or run the Windows binary then download from below URL:
http://16bitsoft.com/V2/Files/SDL2/TC4/Alpha/SDL2-TC4_Alpha1.zip



JeZ+Lee
JessePalser Gmail com
16BitSoft(R)
Video Game Design Studio
www.16BitSoft.com


_______________________________________________
SDL mailing list

http://lists.libsdl.org/listinfo.cgi/sdl-libsdl.org







_______________________________________________
SDL mailing list

http://lists.libsdl.org/listinfo.cgi/sdl-libsdl.org

Hi,

Sorry, I don't know how to build SDL2 from source, I use Code::Blocks C++ IDE on Windows 8.

Is there a work-around I can try in my game project's source code?

It is not difficult to set up a virtual machine running linux, and install a cross-compiler to make windows builds for you.
If you don't want to do that, I suggest you download visual C++ EE addition (free), and use that to make builds of SDL (and your program) (The IDE is much better than anything else I have seen on windows or linux, and the debugger is outstanding!).

On Sun, Aug 18, 2013 at 5:44 AM, Sparks wrote:

Or you could probably install msys and build it like you would on Linux

Hi,

Sam fixed this issue and provided this new DLL:
http://16bitsoft.com/V2/Files/SDL2/SDL2.dll

Thanks!

That's sort of a roundabout way of doing things, isn't it? :)

--ryan.


_______________________________________________
SDL mailing list

http://lists.libsdl.org/listinfo.cgi/sdl-libsdl.org

Just wait until one gives up on the cross-compiler and builds using
Wine instead.

2013/8/18, Ryan C. Gordon:
_______________________________________________
SDL mailing list

http://lists.libsdl.org/listinfo.cgi/sdl-libsdl.org