egl/android: support for EGL_KHR_partial_update

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)

v5: Replace unnecessary calloc with malloc (Eric)
    Check for BAD_ALLOC error (Emil)
    Check for error in native_window_set_damage_region. (Emil, Tapani,
    Eric).

Signed-off-by: Harish Krupo <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>
Reviewed-by: Eric Engestrom <[email protected]>
Reviewed-by: Tapani Pälli <[email protected]>

1 files changed, 12 insertions, 0 deletions

diff --git a/src/egl/main/eglsurface.h b/src/egl/main/eglsurface.h
index f13cf49741b..c53e8d00671 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;