Since commit d1314de293e9e4a63c35f094c3893aaaed8580b4 we ignore
damage passed to SwapBuffersWithDamage.
Wayland 1.10 now has functionality that allows us to properly
process those damage rectangles, and a way to query if it's
available.
Now we can use wl_surface.damage_buffer and interpret the incoming
damage as being in buffer co-ordinates.
Signed-off-by: Derek Foreman <der...@osg.samsung.com>
---
src/egl/drivers/dri2/platform_wayland.c | 32 +++++++++++++++++++++++++++++---
1 file changed, 29 insertions(+), 3 deletions(-)
diff --git a/src/egl/drivers/dri2/platform_wayland.c
b/src/egl/drivers/dri2/platform_wayland.c
index c2438f7..b5a5b59 100644
--- a/src/egl/drivers/dri2/platform_wayland.c
+++ b/src/egl/drivers/dri2/platform_wayland.c
@@ -653,6 +653,30 @@ create_wl_buffer(struct dri2_egl_surface *dri2_surf)
&wl_buffer_listener, dri2_surf);
}
+static EGLBoolean
+try_damage_buffer(struct dri2_egl_surface *dri2_surf,
+ const EGLint *rects,
+ EGLint n_rects)
+{
+#ifdef WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION
+ int i;
+
+ if (wl_proxy_get_version((struct wl_proxy *) dri2_surf->wl_win->surface)
+ < WL_SURFACE_DAMAGE_BUFFER_SINCE_VERSION)
+ return EGL_FALSE;
+
+ for (i = 0; i < n_rects; i++) {
+ const int *rect = &rects[i * 4];
+
+ wl_surface_damage_buffer(dri2_surf->wl_win->surface,
+ rect[0],
+ dri2_surf->base.Height - rect[1] - rect[3],
+ rect[2], rect[3]);
+ }
+ return EGL_TRUE;
+#endif
+ return EGL_FALSE;
+}
/**
* Called via eglSwapBuffers(), drv->API.SwapBuffers().
*/
@@ -703,10 +727,12 @@ dri2_wl_swap_buffers_with_damage(_EGLDriver *drv,
dri2_surf->dx = 0;
dri2_surf->dy = 0;
- /* We deliberately ignore the damage region and post maximum damage, due to
+ /* If the compositor doesn't support damage_buffer, we deliberately
+ * ignore the damage region and post maximum damage, due to
* https://bugs.freedesktop.org/78190 */
- wl_surface_damage(dri2_surf->wl_win->surface,
- 0, 0, INT32_MAX, INT32_MAX);
+ if (!n_rects || !try_damage_buffer(dri2_surf, rects, n_rects))
+ wl_surface_damage(dri2_surf->wl_win->surface,
+ 0, 0, INT32_MAX, INT32_MAX);
if (dri2_dpy->is_different_gpu) {
_EGLContext *ctx = _eglGetCurrentContext();
--
2.7.0
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