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| author | Chia-I Wu <[email protected]> | 2011-09-08 02:39:01 +0800 |
|---|---|---|
| committer | Chia-I Wu <[email protected]> | 2011-09-08 11:16:12 +0800 |
| commit | 41f5d2e8acbe3d6393f8012813609215534b5678 (patch) | |
| tree | c6247ab9c3f15de35c4b18a3c8d3867cdbdb1adf /src/gallium/state_trackers/egl/wayland | |
| parent | f4c37d6ab256f860a755fe69dfea5fb8df217a2f (diff) | |
st/egl: overload NATIVE_PARAM_PREMULTIPLIED_ALPHA
EGL does not export this capability of a display server. But wayland
makes use of EGL_VG_ALPHA_FORMAT to achieve it.
So, when the native display returns true for the parameter, st/egl will
set EGL_VG_ALPHA_FORMAT_PRE_BIT for all EGLConfig's with non-zero
EGL_ALPHA_SIZE. EGL_VG_ALPHA_FORMAT attribute of a surface will affect
how the surface is presented.
Because st/vega does not support EGL_VG_ALPHA_FORMAT_PRE_BIT,
EGL_OPENVG_BIT will be cleared.
Diffstat (limited to 'src/gallium/state_trackers/egl/wayland')
0 files changed, 0 insertions, 0 deletions