diff options
| author | Kenneth Russel <[email protected]> | 2005-06-30 19:30:24 +0000 |
|---|---|---|
| committer | Kenneth Russel <[email protected]> | 2005-06-30 19:30:24 +0000 |
| commit | bee7e4acd087a2de8369c47149c9b2c35e9f3a68 (patch) | |
| tree | 3f715c2cdf462364cfaac4c9e3223fd7526463b1 /doc/userguide | |
| parent | 97454dd0cedb5a99a5f9d26c1ef130e09d790fb8 (diff) | |
Fixed Issue 168: Add support for transparency in GLJPanel
Obey setOpaque() when selecting buffered image type. User must still
request alpha bits in the GLCapabilities. Not supported on all
back-end renderers; for example, Microsoft GDI renderer does not
implement alpha bits when rendering to DIB sections. Added examples of
use in JGears and JRefract demos.
git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@314 232f8b59-042b-4e1e-8c03-345bb8c30851
Diffstat (limited to 'doc/userguide')
| -rw-r--r-- | doc/userguide/index.html | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/doc/userguide/index.html b/doc/userguide/index.html index 06d047f3f..58b8b3e29 100644 --- a/doc/userguide/index.html +++ b/doc/userguide/index.html @@ -159,6 +159,18 @@ recommendation when it is available, and otherwise attempts to use a platform-independent selection algorithm. </P> +<P> + +The GLJPanel can be made non-opaque according to Swing's rendering +model, so it can act as an overlay to other Swing or Java2D drawing. +In order to enable this, set up your GLCapabilities object with a +non-zero alpha depth (a common value is 8 bits) and call +setOpaque(false) on the GLJPanel once it has been created. Java2D +rendering underneath it will then show through areas where OpenGL has +produced an alpha value less than 1.0. See the JGears and JRefract +demos for examples of how to use this functionality. + +</P> <H2> Writing a GLEventListener </H2> |