render: egl: Add utility functions for saving/restoring context

1 files changed, 12 insertions, 0 deletions

diff --git a/render/egl.c b/render/egl.c
index a2f7bd9a..6df5dac8 100644
--- a/render/egl.c
+++ b/render/egl.c
@@ -411,6 +411,18 @@ bool wlr_egl_is_current(struct wlr_egl *egl) {
 	return eglGetCurrentContext() == egl->context;
 }
 
+void wlr_egl_save_context(struct wlr_egl_context *context) {
+	context->display = eglGetCurrentDisplay();
+	context->context = eglGetCurrentContext();
+	context->draw_surface = eglGetCurrentSurface(EGL_DRAW);
+	context->read_surface = eglGetCurrentSurface(EGL_READ);
+}
+
+bool wlr_egl_restore_context(struct wlr_egl_context *context) {
+	return eglMakeCurrent(context->display, context->draw_surface,
+			context->read_surface, context->context);
+}
+
 bool wlr_egl_swap_buffers(struct wlr_egl *egl, EGLSurface surface,
 		pixman_region32_t *damage) {
 	// Never block when swapping buffers on Wayland