It seems like i've seen posts asking about this kind of thing for a long time, but with no resolutions. So I decided to try my hand at it.
It works nicely on the cards I have at hand. This is a Windoze 2000/XP only demo.
Sorry, there is no source with it yet. The source is still unclean.
Download
Let me know what you think
Regards,
Dude
Woah ! Superb !
Your splash screen is a bit misleading, first I though 'hey, is that GL stuff ?'
Maybe I ask for too much, but is there any chance to actually blend the spheres above the windows desktop , like your 'about' screen ? The 'transparent' mode only make the mouse click trought the spheres.
Win2000, Gefore3ti200.
Very interesting, I would really like to see the sources, even if it is ugly as hell.
Congratulations !
Excellent work dude!!! How did you make it?
yooyo
My guess: Render to an RGBA pbuffer, readback scene, blit with gdi and set colorkey/blend depending on the alpha channel or background color of the scene.Originally posted by yooyo:
Excellent work dude!!! How did you make it?
yooyo
The splash screen is intriguing, though...
this thing really rocks!
really!
http://davepermen.net - if i could stay true to my heart, i would feel totally free
Not sure : you can even click through this window holes on the windows under it!Originally posted by evanGLizr:
My guess: Render to an RGBA pbuffer, readback scene, blit with gdi and set colorkey/blend depending on the alpha channel or background color of the scene.Originally posted by yooyo:
Excellent work dude!!! How did you make it?
yooyo
This rocks. I'm really interrested in seeing the source.
Very nicly done.
"A Programmer is the same thing as a Psycho, except for one difference----A programmer gets paid to do what he does."*--Brian Jennings
That's part of the normal layered window hit test behaviour:Originally posted by tfpsly:
Not sure : you can even click through this window holes on the windows under it!Originally posted by evanGLizr:
My guess: Render to an RGBA pbuffer, readback scene, blit with gdi and set colorkey/blend depending on the alpha channel or background color of the scene.Originally posted by yooyo:
Excellent work dude!!! How did you make it?
yooyo
I'm quite sure everything is just an RGBA pbuffer & a GDI blit, using colorkeying or blending, depending on whether you want fully transparent/per window translucency or per pixel translucent windows:Hit testing of a layered window is based on the shape and transparency of the window. This means that the areas of the window that are color-keyed or whose alpha value is zero will let the mouse messages through.
If the layered window has the WS_EX_TRANSPARENT extended window style, the shape of the layered window will be ignored and the mouse events will be passed to the other windows underneath the layered window.
To use UpdateLayeredWindow, the visual bits for a layered window have to be rendered into a compatible bitmap. Then, via a compatible GDI Device Context, the bitmap is provided to the UpdateLayeredWindow API, along with the desired color-key and alpha-blend information. The bitmap can also contain per-pixel alpha information.
Probably right about about readback and blitting cause it runs slow for something really simple.
For sure it would work this way.
------------------------------
Sig: http://glhlib.sourceforge.net
an open source GLU replacement library. Much more modern than GLU.
float matrix[16], inverse_matrix[16];
glhLoadIdentityf2(matrix);
glhTranslatef2(matrix, 0.0, 0.0, 5.0);
glhRotateAboutXf2(matrix, angleInRadians);
glhScalef2(matrix, 1.0, 1.0, -1.0);
glhQuickInvertMatrixf2(matrix, inverse_matrix);
glUniformMatrix4fv(uniformLocation1, 1, FALSE, matrix);
glUniformMatrix4fv(uniformLocation2, 1, FALSE, inverse_matrix);
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