diff options
| -rw-r--r-- | include/hardware/hwcomposer.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/include/hardware/hwcomposer.h b/include/hardware/hwcomposer.h index f03ac70..0722e32 100644 --- a/include/hardware/hwcomposer.h +++ b/include/hardware/hwcomposer.h @@ -407,13 +407,20 @@ typedef struct hwc_composer_device_1 { * non-NULL. In HWC 1.2, support for one virtual display is required, and * no more than one will be used. Future HWC versions might require more. * - * IMPORTANT NOTE: there is an implicit layer containing opaque black + * 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 + * IMPORTANT NOTE: In the event of an error this call *MUST* still cause + * any fences returned in the previous call to set to eventually become + * signaled. The caller may have already issued wait commands on these + * fences, and having set return without causing those fences to signal + * will likely result in a deadlock. + * + * returns: 0 on success. A negative error code on error: + * HWC_EGL_ERROR: eglGetError() will provide the proper error code (only + * allowed prior to HWComposer 1.1) * Another code for non EGL errors. */ int (*set)(struct hwc_composer_device_1 *dev, |