[waffle] [PATCH 0/2] Test and fix for EGL configs with alpha

Pauli Nieminen pauli.nieminen at linux.intel.com
Thu May 24 07:33:35 PDT 2012

Only EGL configs [1] that are available with alpha are using 32bit composite
visual. To create a window with that visual requires a bit more parameters
than waffle  is currently providing. The fix is relatively simple 

I hit this with piglit tests using GLUT_ALPHA.

I don't actually know any reason why mesa doesn't provide alpha bits for
24bit X visuals. Application could still use framebuffer alpha bits for 
rendering even tough compositor won't read those values. But I suppose
that is topic of later discussion in mesa list.

Will waffle provide application control to select between opaque and
translucent window even if selecting config with alpha bit?

[1] example config:
0x3d 32  0  8  8  8  8  0  0  0 0 0x66TC      a  y  y  y     win,pb,pix

Pauli Nieminen (2):
  gl_basic_test: Add test that config with alpha works
  x11: Support visuals that don't match root visual

 src/waffle/x11/x11.c             |   23 ++++++++++++++++++++---
 tests/functional/gl_basic_test.c |   31 ++++++++++++++++++++-----------
 2 files changed, 40 insertions(+), 14 deletions(-)


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