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// SPDX-License-Identifier: Unlicense OR MIT
//go:build ((linux && !android) || freebsd) && !nowayland
// +build linux,!android freebsd
// +build !nowayland
package app
import (
"errors"
"unsafe"
"gioui.org/internal/egl"
)
/*
#cgo linux pkg-config: egl wayland-egl
#cgo freebsd openbsd LDFLAGS: -lwayland-egl
#cgo CFLAGS: -DEGL_NO_X11
#include <EGL/egl.h>
#include <wayland-client.h>
#include <wayland-egl.h>
*/
import "C"
type wlContext struct {
win *window
*egl.Context
eglWin *C.struct_wl_egl_window
}
func init() {
newWaylandEGLContext = func(w *window) (context, error) {
disp := egl.NativeDisplayType(unsafe.Pointer(w.display()))
ctx, err := egl.NewContext(disp)
if err != nil {
return nil, err
}
return &wlContext{Context: ctx, win: w}, nil
}
}
func (c *wlContext) Release() {
if c.Context != nil {
c.Context.Release()
c.Context = nil
}
if c.eglWin != nil {
C.wl_egl_window_destroy(c.eglWin)
c.eglWin = nil
}
}
func (c *wlContext) Refresh() error {
c.Context.ReleaseSurface()
if c.eglWin != nil {
C.wl_egl_window_destroy(c.eglWin)
c.eglWin = nil
}
surf, width, height := c.win.surface()
if surf == nil {
return errors.New("wayland: no surface")
}
eglWin := C.wl_egl_window_create(surf, C.int(width), C.int(height))
if eglWin == nil {
return errors.New("wayland: wl_egl_window_create failed")
}
c.eglWin = eglWin
eglSurf := egl.NativeWindowType(uintptr(unsafe.Pointer(eglWin)))
return c.Context.CreateSurface(eglSurf, width, height)
}
func (c *wlContext) Lock() error {
return c.Context.MakeCurrent()
}
func (c *wlContext) Unlock() {
c.Context.ReleaseCurrent()
}
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