forked from joejulian/gio
Elias Naur
691adf4e77
According to #565 X11 GPU drivers don't deal well with recreation of EGL surfaces. Thanks to Walter Schneider for debugging this issue and coming up with the original patch. Fixes: https://todo.sr.ht/~eliasnaur/gio/565 Co-authored-by: Walter Werner SCHNEIDER <contact@schnwalter.eu> Signed-off-by: Elias Naur <mail@eliasnaur.com>
92 lines
1.9 KiB
Go
92 lines
1.9 KiB
Go
// SPDX-License-Identifier: Unlicense OR MIT
|
|
|
|
//go:build ((linux && !android) || freebsd) && !nowayland && !noopengl
|
|
// +build linux,!android freebsd
|
|
// +build !nowayland
|
|
// +build !noopengl
|
|
|
|
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)))
|
|
if err := c.Context.CreateSurface(eglSurf); err != nil {
|
|
return err
|
|
}
|
|
if err := c.Context.MakeCurrent(); err != nil {
|
|
return err
|
|
}
|
|
defer c.Context.ReleaseCurrent()
|
|
// We're in charge of the frame callbacks, don't let eglSwapBuffers
|
|
// wait for callbacks that may never arrive.
|
|
c.Context.EnableVSync(false)
|
|
return nil
|
|
}
|
|
|
|
func (c *wlContext) Lock() error {
|
|
return c.Context.MakeCurrent()
|
|
}
|
|
|
|
func (c *wlContext) Unlock() {
|
|
c.Context.ReleaseCurrent()
|
|
}
|