[Mesa-dev] [PATCH v4] egl/android: support for EGL_KHR_partial_update
Tapani Pälli
tapani.palli at intel.com
Thu Jun 8 11:02:01 UTC 2017
Harish, please find small addition below.
I noticed we still have one crasher in tests when this extension is
enabled, it's related to buffer age so I've sent a fix separately here:
https://lists.freedesktop.org/archives/mesa-dev/2017-June/158391.html
On 06/07/2017 07:11 PM, Harish Krupo wrote:
> This patch adds support for the EGL_KHR_partial_update extension for
> android platform. It passes 36/37 tests in dEQP for EGL_KHR_partial_update.
> 1 test not supported.
>
> v2: add fallback for eglSetDamageRegionKHR (Tapani)
>
> v3: The native_window_set_surface_damage call is available only from
> Android version 6.0. Reintroduce the ANDROID_VERSION guard and
> advertise extension only if version is >= 6.0. (Emil Velikov)
>
> v4: use newly introduced ANDROID_API_LEVEL guard rather than
> ANDROID_VERSION guard to advertise the extension.The extension
> is advertised only if ANDROID_API_LEVEL >= 23 (Android 6.0 or
> greater). Add fallback function for platforms other than Android.
> Fix possible math overflow. (Emil Velikov)
> Return immediately when n_rects is 0. Place function's entrypoint
> in alphabetical order. (Eric Engestrom)
>
> Signed-off-by: Harish Krupo <harish.krupo.kps at intel.com>
> ---
> src/egl/drivers/dri2/egl_dri2.c | 9 ++++
> src/egl/drivers/dri2/egl_dri2.h | 4 ++
> src/egl/drivers/dri2/egl_dri2_fallbacks.h | 8 +++
> src/egl/drivers/dri2/platform_android.c | 41 ++++++++++++++
> src/egl/drivers/dri2/platform_drm.c | 1 +
> src/egl/drivers/dri2/platform_surfaceless.c | 1 +
> src/egl/drivers/dri2/platform_wayland.c | 1 +
> src/egl/drivers/dri2/platform_x11.c | 2 +
> src/egl/drivers/dri2/platform_x11_dri3.c | 1 +
> src/egl/main/eglapi.c | 83 +++++++++++++++++++++++++++++
> src/egl/main/eglapi.h | 2 +
> src/egl/main/egldisplay.h | 1 +
> src/egl/main/eglentrypoint.h | 1 +
> src/egl/main/eglfallbacks.c | 1 +
> src/egl/main/eglsurface.c | 9 ++++
> src/egl/main/eglsurface.h | 12 +++++
> 16 files changed, 177 insertions(+)
>
> diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c
> index d31a0bf8e0..a1d72166df 100644
> --- a/src/egl/drivers/dri2/egl_dri2.c
> +++ b/src/egl/drivers/dri2/egl_dri2.c
> @@ -1512,6 +1512,14 @@ dri2_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
> }
>
> static EGLBoolean
> +dri2_set_damage_region(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
> + EGLint *rects, EGLint n_rects)
> +{
> + struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
> + return dri2_dpy->vtbl->set_damage_region(drv, dpy, surf, rects, n_rects);
> +}
> +
> +static EGLBoolean
> dri2_post_sub_buffer(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
> EGLint x, EGLint y, EGLint width, EGLint height)
> {
> @@ -3141,6 +3149,7 @@ _eglBuiltInDriverDRI2(const char *args)
> dri2_drv->base.API.SwapBuffers = dri2_swap_buffers;
> dri2_drv->base.API.SwapBuffersWithDamageEXT = dri2_swap_buffers_with_damage;
> dri2_drv->base.API.SwapBuffersRegionNOK = dri2_swap_buffers_region;
> + dri2_drv->base.API.SetDamageRegion = dri2_set_damage_region;
> dri2_drv->base.API.PostSubBufferNV = dri2_post_sub_buffer;
> dri2_drv->base.API.CopyBuffers = dri2_copy_buffers,
> dri2_drv->base.API.QueryBufferAge = dri2_query_buffer_age;
> diff --git a/src/egl/drivers/dri2/egl_dri2.h b/src/egl/drivers/dri2/egl_dri2.h
> index 449016093a..ba7a7be57b 100644
> --- a/src/egl/drivers/dri2/egl_dri2.h
> +++ b/src/egl/drivers/dri2/egl_dri2.h
> @@ -118,6 +118,10 @@ struct dri2_egl_display_vtbl {
> _EGLSurface *surface,
> const EGLint *rects, EGLint n_rects);
>
> + EGLBoolean (*set_damage_region)(_EGLDriver *drv, _EGLDisplay *dpy,
> + _EGLSurface *surface,
> + const EGLint *rects, EGLint n_rects);
> +
> EGLBoolean (*swap_buffers_region)(_EGLDriver *drv, _EGLDisplay *dpy,
> _EGLSurface *surf, EGLint numRects,
> const EGLint *rects);
> diff --git a/src/egl/drivers/dri2/egl_dri2_fallbacks.h b/src/egl/drivers/dri2/egl_dri2_fallbacks.h
> index 67a9c5034a..d8363c9bdd 100644
> --- a/src/egl/drivers/dri2/egl_dri2_fallbacks.h
> +++ b/src/egl/drivers/dri2/egl_dri2_fallbacks.h
> @@ -95,6 +95,14 @@ dri2_fallback_copy_buffers(_EGLDriver *drv, _EGLDisplay *dpy,
> return EGL_FALSE;
> }
>
> +static inline EGLBoolean
> +dri2_fallback_set_damage_region(_EGLDriver *drv, _EGLDisplay *dpy,
> + _EGLSurface *surf,
> + const EGLint *rects, EGLint n_rects)
> +{
> + return EGL_FALSE;
> +}
> +
> static inline EGLint
> dri2_fallback_query_buffer_age(_EGLDriver *drv, _EGLDisplay *dpy,
> _EGLSurface *surf)
> diff --git a/src/egl/drivers/dri2/platform_android.c b/src/egl/drivers/dri2/platform_android.c
> index 055dc0f996..303e19052f 100644
> --- a/src/egl/drivers/dri2/platform_android.c
> +++ b/src/egl/drivers/dri2/platform_android.c
> @@ -656,6 +656,39 @@ droid_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
> return EGL_TRUE;
> }
>
> +static EGLBoolean
> +droid_set_damage_region(_EGLDriver *drv,
> + _EGLDisplay *disp,
> + _EGLSurface *draw, const EGLint* rects, EGLint n_rects)
> +{
> + struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
> + struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
> + android_native_rect_t* droid_rects = NULL;
> +
> + if (n_rects == 0)
> + return EGL_TRUE;
> +
> + droid_rects = calloc(n_rects, sizeof(android_native_rect_t));
> + EGLint num_drects;
> +
> + for (num_drects = 0; num_drects < n_rects; num_drects++) {
> + EGLint i = num_drects * 4;
> + droid_rects[num_drects].left = rects[i];
> + droid_rects[num_drects].bottom = rects[i + 1];
> + droid_rects[num_drects].right = rects[i] + rects[i + 2];
> + droid_rects[num_drects].top = rects[i + 1] + rects[i + 3];
> + }
> +
> + /*
> + * XXX/TODO: Need to check the return value of this function.
> + */
Why not just do it now then, return EGL_FALSE if return value != 0, I
don't think anything else is required here.
> + native_window_set_surface_damage(dri2_surf->window, droid_rects, n_rects);
> +
> + free(droid_rects);
> +
> + return EGL_TRUE;
> +}
> +
> static _EGLImage *
> droid_create_image_from_prime_fd_yuv(_EGLDisplay *disp, _EGLContext *ctx,
> struct ANativeWindowBuffer *buf, int fd)
> @@ -1106,6 +1139,11 @@ static const struct dri2_egl_display_vtbl droid_display_vtbl = {
> .swap_buffers = droid_swap_buffers,
> .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
> .swap_buffers_region = dri2_fallback_swap_buffers_region,
> +#if ANDROID_API_LEVEL >= 23
> + .set_damage_region = droid_set_damage_region,
> +#else
> + .set_damage_region = dri2_fallback_set_damage_region,
> +#endif
> .post_sub_buffer = dri2_fallback_post_sub_buffer,
> .copy_buffers = dri2_fallback_copy_buffers,
> .query_buffer_age = droid_query_buffer_age,
> @@ -1222,6 +1260,9 @@ dri2_initialize_android(_EGLDriver *drv, _EGLDisplay *dpy)
> dpy->Extensions.ANDROID_image_native_buffer = EGL_TRUE;
> dpy->Extensions.ANDROID_recordable = EGL_TRUE;
> dpy->Extensions.EXT_buffer_age = EGL_TRUE;
> +#if ANDROID_API_LEVEL >= 23
> + dpy->Extensions.KHR_partial_update = EGL_TRUE;
> +#endif
>
> /* Fill vtbl last to prevent accidentally calling virtual function during
> * initialization.
> diff --git a/src/egl/drivers/dri2/platform_drm.c b/src/egl/drivers/dri2/platform_drm.c
> index 2f04589426..0f9d4d86f6 100644
> --- a/src/egl/drivers/dri2/platform_drm.c
> +++ b/src/egl/drivers/dri2/platform_drm.c
> @@ -658,6 +658,7 @@ static const struct dri2_egl_display_vtbl dri2_drm_display_vtbl = {
> .swap_buffers = dri2_drm_swap_buffers,
> .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
> .swap_buffers_region = dri2_fallback_swap_buffers_region,
> + .set_damage_region = dri2_fallback_set_damage_region,
> .post_sub_buffer = dri2_fallback_post_sub_buffer,
> .copy_buffers = dri2_fallback_copy_buffers,
> .query_buffer_age = dri2_drm_query_buffer_age,
> diff --git a/src/egl/drivers/dri2/platform_surfaceless.c b/src/egl/drivers/dri2/platform_surfaceless.c
> index 6563e466c0..0eb3fb7505 100644
> --- a/src/egl/drivers/dri2/platform_surfaceless.c
> +++ b/src/egl/drivers/dri2/platform_surfaceless.c
> @@ -237,6 +237,7 @@ static const struct dri2_egl_display_vtbl dri2_surfaceless_display_vtbl = {
> .swap_buffers = surfaceless_swap_buffers,
> .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
> .swap_buffers_region = dri2_fallback_swap_buffers_region,
> + .set_damage_region = dri2_fallback_set_damage_region,
> .post_sub_buffer = dri2_fallback_post_sub_buffer,
> .copy_buffers = dri2_fallback_copy_buffers,
> .query_buffer_age = dri2_fallback_query_buffer_age,
> diff --git a/src/egl/drivers/dri2/platform_wayland.c b/src/egl/drivers/dri2/platform_wayland.c
> index e447aa6729..e9b047d3e8 100644
> --- a/src/egl/drivers/dri2/platform_wayland.c
> +++ b/src/egl/drivers/dri2/platform_wayland.c
> @@ -1080,6 +1080,7 @@ static const struct dri2_egl_display_vtbl dri2_wl_display_vtbl = {
> .swap_buffers = dri2_wl_swap_buffers,
> .swap_buffers_with_damage = dri2_wl_swap_buffers_with_damage,
> .swap_buffers_region = dri2_fallback_swap_buffers_region,
> + .set_damage_region = dri2_fallback_set_damage_region,
> .post_sub_buffer = dri2_fallback_post_sub_buffer,
> .copy_buffers = dri2_fallback_copy_buffers,
> .query_buffer_age = dri2_wl_query_buffer_age,
> diff --git a/src/egl/drivers/dri2/platform_x11.c b/src/egl/drivers/dri2/platform_x11.c
> index 8d8c7cb490..74d3a164b6 100644
> --- a/src/egl/drivers/dri2/platform_x11.c
> +++ b/src/egl/drivers/dri2/platform_x11.c
> @@ -1140,6 +1140,7 @@ static const struct dri2_egl_display_vtbl dri2_x11_swrast_display_vtbl = {
> .create_image = dri2_fallback_create_image_khr,
> .swap_interval = dri2_fallback_swap_interval,
> .swap_buffers = dri2_x11_swap_buffers,
> + .set_damage_region = dri2_fallback_set_damage_region,
> .swap_buffers_region = dri2_fallback_swap_buffers_region,
> .post_sub_buffer = dri2_fallback_post_sub_buffer,
> .copy_buffers = dri2_x11_copy_buffers,
> @@ -1161,6 +1162,7 @@ static const struct dri2_egl_display_vtbl dri2_x11_display_vtbl = {
> .swap_buffers = dri2_x11_swap_buffers,
> .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
> .swap_buffers_region = dri2_x11_swap_buffers_region,
> + .set_damage_region = dri2_fallback_set_damage_region,
> .post_sub_buffer = dri2_x11_post_sub_buffer,
> .copy_buffers = dri2_x11_copy_buffers,
> .query_buffer_age = dri2_fallback_query_buffer_age,
> diff --git a/src/egl/drivers/dri2/platform_x11_dri3.c b/src/egl/drivers/dri2/platform_x11_dri3.c
> index 041da3208d..3148f4904e 100644
> --- a/src/egl/drivers/dri2/platform_x11_dri3.c
> +++ b/src/egl/drivers/dri2/platform_x11_dri3.c
> @@ -458,6 +458,7 @@ struct dri2_egl_display_vtbl dri3_x11_display_vtbl = {
> .swap_buffers = dri3_swap_buffers,
> .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
> .swap_buffers_region = dri2_fallback_swap_buffers_region,
> + .set_damage_region = dri2_fallback_set_damage_region,
> .post_sub_buffer = dri2_fallback_post_sub_buffer,
> .copy_buffers = dri3_copy_buffers,
> .query_buffer_age = dri3_query_buffer_age,
> diff --git a/src/egl/main/eglapi.c b/src/egl/main/eglapi.c
> index e6355ace87..9b899d8524 100644
> --- a/src/egl/main/eglapi.c
> +++ b/src/egl/main/eglapi.c
> @@ -506,6 +506,7 @@ _eglCreateExtensionsString(_EGLDisplay *dpy)
> _EGL_CHECK_EXTENSION(KHR_image_base);
> _EGL_CHECK_EXTENSION(KHR_image_pixmap);
> _EGL_CHECK_EXTENSION(KHR_no_config_context);
> + _EGL_CHECK_EXTENSION(KHR_partial_update);
> _EGL_CHECK_EXTENSION(KHR_reusable_sync);
> _EGL_CHECK_EXTENSION(KHR_surfaceless_context);
> if (dpy->Extensions.EXT_swap_buffers_with_damage)
> @@ -1235,6 +1236,15 @@ eglSwapBuffers(EGLDisplay dpy, EGLSurface surface)
>
> ret = drv->API.SwapBuffers(drv, disp, surf);
>
> + /* EGL_KHR_partial_update
> + * Frame boundary successfully reached,
> + * reset damage region and reset BufferAgeRead
> + */
> + if (ret) {
> + surf->SetDamageRegionCalled = EGL_FALSE;
> + surf->BufferAgeRead = EGL_FALSE;
> + }
> +
> RETURN_EGL_EVAL(disp, ret);
> }
>
> @@ -1259,6 +1269,15 @@ _eglSwapBuffersWithDamageCommon(_EGLDisplay *disp, _EGLSurface *surf,
>
> ret = drv->API.SwapBuffersWithDamageEXT(drv, disp, surf, rects, n_rects);
>
> + /* EGL_KHR_partial_update
> + * Frame boundary successfully reached,
> + * reset damage region and reset BufferAgeRead
> + */
> + if (ret) {
> + surf->SetDamageRegionCalled = EGL_FALSE;
> + surf->BufferAgeRead = EGL_FALSE;
> + }
> +
> RETURN_EGL_EVAL(disp, ret);
> }
>
> @@ -1282,6 +1301,70 @@ eglSwapBuffersWithDamageKHR(EGLDisplay dpy, EGLSurface surface,
> return _eglSwapBuffersWithDamageCommon(disp, surf, rects, n_rects);
> }
>
> +/**
> + * If the width of the passed rect is greater than the surface's
> + * width then it is clamped to the width of the surface. Same with
> + * height.
> + */
> +
> +static void
> +_eglSetDamageRegionKHRClampRects(_EGLDisplay* disp, _EGLSurface* surf,
> + EGLint *rects, EGLint n_rects)
> +{
> + EGLint i;
> + EGLint surf_height = surf->Height;
> + EGLint surf_width = surf->Width;
> +
> + for (i = 0; i < (4 * n_rects); i += 4) {
> + EGLint x, y, rect_width, rect_height;
> + x = rects[i];
> + y = rects[i + 1];
> + rect_width = rects[i + 2];
> + rect_height = rects[i + 3];
> +
> + if (rect_width > surf_width - x)
> + rects[i + 2] = surf_width - x;
> +
> + if (rect_height > surf_height - y)
> + rects[i + 3] = surf_height - y;
> + }
> +}
> +
> +static EGLBoolean EGLAPIENTRY
> +eglSetDamageRegionKHR(EGLDisplay dpy, EGLSurface surface,
> + EGLint *rects, EGLint n_rects)
> +{
> + _EGLDisplay *disp = _eglLockDisplay(dpy);
> + _EGLSurface *surf = _eglLookupSurface(surface, disp);
> + _EGL_FUNC_START(disp, EGL_OBJECT_SURFACE_KHR, surf, EGL_FALSE);
> + _EGLContext *ctx = _eglGetCurrentContext();
> + _EGLDriver *drv;
> + EGLBoolean ret;
> + _EGL_CHECK_SURFACE(disp, surf, EGL_FALSE, drv);
> +
> + if (_eglGetContextHandle(ctx) == EGL_NO_CONTEXT ||
> + surf->Type != EGL_WINDOW_BIT ||
> + ctx->DrawSurface != surf ||
> + surf->SwapBehavior != EGL_BUFFER_DESTROYED)
> + RETURN_EGL_ERROR(disp, EGL_BAD_MATCH, EGL_FALSE);
> +
> + /* If the damage region is already set or
> + * buffer age is not queried between
> + * frame boundaries, throw bad access error
> + */
> +
> + if (surf->SetDamageRegionCalled || !surf->BufferAgeRead)
> + RETURN_EGL_ERROR(disp, EGL_BAD_ACCESS, EGL_FALSE);
> +
> + _eglSetDamageRegionKHRClampRects(disp, surf, rects, n_rects);
> + ret = drv->API.SetDamageRegion(drv, disp, surf, rects, n_rects);
> +
> + if (ret)
> + surf->SetDamageRegionCalled = EGL_TRUE;
> +
> + RETURN_EGL_EVAL(disp, ret);
> +}
> +
> EGLBoolean EGLAPIENTRY
> eglCopyBuffers(EGLDisplay dpy, EGLSurface surface, EGLNativePixmapType target)
> {
> diff --git a/src/egl/main/eglapi.h b/src/egl/main/eglapi.h
> index cab3e9605a..852a34584e 100644
> --- a/src/egl/main/eglapi.h
> +++ b/src/egl/main/eglapi.h
> @@ -110,6 +110,8 @@ struct _egl_api
> _EGLSurface *draw);
> EGLBoolean (*CopyBuffers)(_EGLDriver *drv, _EGLDisplay *dpy,
> _EGLSurface *surface, void *native_pixmap_target);
> + EGLBoolean (*SetDamageRegion)(_EGLDriver *drv, _EGLDisplay *dpy,
> + _EGLSurface *surface, EGLint *rects, EGLint n_rects);
>
> /* misc functions */
> EGLBoolean (*WaitClient)(_EGLDriver *drv, _EGLDisplay *dpy,
> diff --git a/src/egl/main/egldisplay.h b/src/egl/main/egldisplay.h
> index 9685bed360..a13ff5bb1b 100644
> --- a/src/egl/main/egldisplay.h
> +++ b/src/egl/main/egldisplay.h
> @@ -118,6 +118,7 @@ struct _egl_extensions
> EGLBoolean KHR_image_base;
> EGLBoolean KHR_image_pixmap;
> EGLBoolean KHR_no_config_context;
> + EGLBoolean KHR_partial_update;
> EGLBoolean KHR_reusable_sync;
> EGLBoolean KHR_surfaceless_context;
> EGLBoolean KHR_wait_sync;
> diff --git a/src/egl/main/eglentrypoint.h b/src/egl/main/eglentrypoint.h
> index b9dca7ceda..f7fe77410d 100644
> --- a/src/egl/main/eglentrypoint.h
> +++ b/src/egl/main/eglentrypoint.h
> @@ -63,6 +63,7 @@ EGL_ENTRYPOINT(eglQuerySurface)
> EGL_ENTRYPOINT(eglQueryWaylandBufferWL)
> EGL_ENTRYPOINT(eglReleaseTexImage)
> EGL_ENTRYPOINT(eglReleaseThread)
> +EGL_ENTRYPOINT(eglSetDamageRegionKHR)
> EGL_ENTRYPOINT(eglSignalSyncKHR)
> EGL_ENTRYPOINT(eglSurfaceAttrib)
> EGL_ENTRYPOINT(eglSwapBuffers)
> diff --git a/src/egl/main/eglfallbacks.c b/src/egl/main/eglfallbacks.c
> index 017d337133..1575ab5f79 100644
> --- a/src/egl/main/eglfallbacks.c
> +++ b/src/egl/main/eglfallbacks.c
> @@ -77,6 +77,7 @@ _eglInitDriverFallbacks(_EGLDriver *drv)
> drv->API.ReleaseTexImage = (void*) _eglReturnFalse;
> drv->API.CopyBuffers = (void*) _eglReturnFalse;
> drv->API.SwapBuffers = (void*) _eglReturnFalse;
> + drv->API.SetDamageRegion = (void*) _eglReturnFalse;
> drv->API.SwapInterval = _eglSwapInterval;
>
> drv->API.WaitClient = (void*) _eglReturnFalse;
> diff --git a/src/egl/main/eglsurface.c b/src/egl/main/eglsurface.c
> index e935c83271..a3b91504b7 100644
> --- a/src/egl/main/eglsurface.c
> +++ b/src/egl/main/eglsurface.c
> @@ -317,6 +317,8 @@ _eglInitSurface(_EGLSurface *surf, _EGLDisplay *dpy, EGLint type,
> surf->AspectRatio = EGL_UNKNOWN;
>
> surf->PostSubBufferSupportedNV = EGL_FALSE;
> + surf->SetDamageRegionCalled = EGL_FALSE;
> + surf->BufferAgeRead = EGL_FALSE;
>
> /* the default swap interval is 1 */
> _eglClampSwapInterval(surf, 1);
> @@ -409,7 +411,14 @@ _eglQuerySurface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surface,
> _eglError(EGL_BAD_ATTRIBUTE, "eglQuerySurface");
> return EGL_FALSE;
> }
> + _EGLContext *ctx = _eglGetCurrentContext();
> + if (_eglGetContextHandle(ctx) == EGL_NO_CONTEXT ||
> + ctx->DrawSurface != surface) {
> + _eglError(EGL_BAD_SURFACE, "eglQuerySurface");
> + return EGL_FALSE;
> + }
> *value = drv->API.QueryBufferAge(drv, dpy, surface);
> + surface->BufferAgeRead = EGL_TRUE;
> break;
> default:
> _eglError(EGL_BAD_ATTRIBUTE, "eglQuerySurface");
> diff --git a/src/egl/main/eglsurface.h b/src/egl/main/eglsurface.h
> index f13cf49741..c53e8d0067 100644
> --- a/src/egl/main/eglsurface.h
> +++ b/src/egl/main/eglsurface.h
> @@ -82,6 +82,18 @@ struct _egl_surface
>
> EGLint SwapInterval;
>
> + /* EGL_KHR_partial_update
> + * True if the damage region is already set
> + * between frame boundaries.
> + */
> + EGLBoolean SetDamageRegionCalled;
> +
> + /* EGL_KHR_partial_update
> + * True if the buffer age is read by the client
> + * between frame boundaries.
> + */
> + EGLBoolean BufferAgeRead;
> +
> /* True if the surface is bound to an OpenGL ES texture */
> EGLBoolean BoundToTexture;
>
>
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