diff options
| author | Mathias Agopian <mathias@google.com> | 2011-11-15 21:27:52 -0800 |
|---|---|---|
| committer | Mathias Agopian <mathias@google.com> | 2011-11-16 16:05:56 -0800 |
| commit | fb410365ca67d36d4c81d7826712c6a05437612f (patch) | |
| tree | 46579df9ee21822193624692c2ab94d44ccb2e5b /include/hardware/hwcomposer.h | |
| parent | e9eaf3721dd715901d669df6488b1ecd63b1e634 (diff) | |
| download | hardware_libhardware-fb410365ca67d36d4c81d7826712c6a05437612f.zip hardware_libhardware-fb410365ca67d36d4c81d7826712c6a05437612f.tar.gz hardware_libhardware-fb410365ca67d36d4c81d7826712c6a05437612f.tar.bz2 | |
improve hw composer documentation
Change-Id: I39363e37417991b9853309154d6691240e706acf
Diffstat (limited to 'include/hardware/hwcomposer.h')
| -rw-r--r-- | include/hardware/hwcomposer.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/hardware/hwcomposer.h b/include/hardware/hwcomposer.h index 0fa3512..a17f3e4 100644 --- a/include/hardware/hwcomposer.h +++ b/include/hardware/hwcomposer.h @@ -287,6 +287,11 @@ typedef struct hwc_composer_device { * entire composition has been handled by SurfaceFlinger with OpenGL ES. * In this case, (*set)() behaves just like eglSwapBuffers(). * + * IMPORTANT NOTE: there is an implicit layer containing opaque black + * pixels behind all the layers in the list. + * It is the responsibility of the hwcomposer module to make + * sure black pixels are output (or blended from). + * * returns: 0 on success. An negative error code on error: * HWC_EGL_ERROR: eglGetError() will provide the proper error code * Another code for non EGL errors. |