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Commit b83290c7 authored by Jesse Hall's avatar Jesse Hall Committed by Android (Google) Code Review
Browse files

Merge "Small clarifications to EGL_ANDROID_presentation_time"

parents da22e6bf 5ac6c0a3

opengl/specs/EGL_ANDROID_presentation_time.txt

+18 −3
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ Contributors 


    Jamie Gennis

    Andy McFadden

    Jesse Hall



Contact
@@ -21,7 +22,7 @@ Status 


Version



    Version 2, April 1, 2013

    Version 3, June 26, 2013



Number
@@ -92,7 +93,9 @@ Changes to Chapter 3 of the EGL 1.2 Specification (EGL Functions and Errors) 


    If the surface presentation time is successfully set, EGL_TRUE is

    returned.  Otherwise EGL_FALSE is returned and an appropriate error is

    set.

    set.  If <dpy> is not the name of a valid, initialized EGLDisplay, an

    EGL_BAD_DISPLAY error is generated.  If <surface> is not a valid EGLSurface

    then an EGL_BAD_SURFACE error is generated.



Issues
@@ -110,9 +113,21 @@ Issues 
    System.nanoTime() method, or from the native clock_gettime function by

    passing CLOCK_MONOTONIC as the clock identifier.



    3. Should the presentation time be state which is used by eglSwapBuffers,

    or should it be a new parameter to an extended variant of eglSwapBuffers?



    RESOLVED: The presentation time should be new state which is used by

    the existing eglSwapBuffers call. Adding new state composes better with

    other (hypothetical) extensions that also modify the behavior of

    eglSwapBuffers.



Revision History



#1 (Jamie Gennis, April 1, 2013)

#3 (Jesse Hall, June 26, 2013)

    - Enumerated errors generated by eglPresentationTimeANDROID.

    - Added Issue #3 with resolution.



#2 (Jamie Gennis, April 1, 2013)

    - Clarified how uses that either do or do not need an absolute time should

      be handled.

    - Specified the eglPresentationTimeANDROID return value.