forked from joejulian/gio
Elias Naur
0bdc2e0432
While here, make context Refresh useful and remove the redundant MakeCurrent from the window loop. Signed-off-by: Elias Naur <mail@eliasnaur.com>
92 lines
2.0 KiB
Go
92 lines
2.0 KiB
Go
// SPDX-License-Identifier: Unlicense OR MIT
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//go:build darwin && !ios
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// +build darwin,!ios
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package wm
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import (
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"errors"
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"gioui.org/gpu"
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"gioui.org/internal/gl"
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)
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/*
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#include <CoreFoundation/CoreFoundation.h>
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#include <CoreGraphics/CoreGraphics.h>
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#include <AppKit/AppKit.h>
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__attribute__ ((visibility ("hidden"))) CFTypeRef gio_createGLContext(void);
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__attribute__ ((visibility ("hidden"))) void gio_setContextView(CFTypeRef ctx, CFTypeRef view);
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__attribute__ ((visibility ("hidden"))) void gio_makeCurrentContext(CFTypeRef ctx);
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__attribute__ ((visibility ("hidden"))) void gio_updateContext(CFTypeRef ctx);
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__attribute__ ((visibility ("hidden"))) void gio_flushContextBuffer(CFTypeRef ctx);
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__attribute__ ((visibility ("hidden"))) void gio_clearCurrentContext(void);
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__attribute__ ((visibility ("hidden"))) void gio_lockContext(CFTypeRef ctxRef);
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__attribute__ ((visibility ("hidden"))) void gio_unlockContext(CFTypeRef ctxRef);
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*/
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import "C"
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type context struct {
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c *gl.Functions
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ctx C.CFTypeRef
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view C.CFTypeRef
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}
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func newContext(w *window) (*context, error) {
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view := w.contextView()
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ctx := C.gio_createGLContext()
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if ctx == 0 {
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return nil, errors.New("gl: failed to create NSOpenGLContext")
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}
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// [NSOpenGLContext setView] must run on the main thread. Fortunately,
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// newContext is only called during a [NSView draw] on the main thread.
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w.w.Run(func() {
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C.gio_setContextView(ctx, view)
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})
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c := &context{
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ctx: ctx,
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view: view,
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}
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return c, nil
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}
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func (c *context) API() gpu.API {
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return gpu.OpenGL{}
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}
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func (c *context) Release() {
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if c.ctx != 0 {
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C.gio_clearCurrentContext()
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C.CFRelease(c.ctx)
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c.ctx = 0
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}
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}
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func (c *context) Present() error {
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return nil
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}
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func (c *context) Lock() error {
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C.gio_lockContext(c.ctx)
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C.gio_makeCurrentContext(c.ctx)
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return nil
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}
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func (c *context) Unlock() {
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C.gio_clearCurrentContext()
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C.gio_unlockContext(c.ctx)
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}
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func (c *context) Refresh() error {
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c.Lock()
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defer c.Unlock()
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C.gio_updateContext(c.ctx)
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return nil
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}
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func (w *window) NewContext() (Context, error) {
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return newContext(w)
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}
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