mirror of
https://git.sr.ht/~eliasnaur/gio
synced 2026-07-01 15:45:38 +00:00
Elias Naur
ffe5ab51a2
As a consequence, most API is gone from gpu/gl, and embedding Gio in foreign frameworks don't need to provide an OpenGL implementation. The next change simplifies the GLFW embedding example accordingly. Signed-off-by: Elias Naur <mail@eliasnaur.com>
58 lines
1.4 KiB
Go
58 lines
1.4 KiB
Go
// SPDX-License-Identifier: Unlicense OR MIT
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package headless
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import (
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"gioui.org/gpu/backend"
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"gioui.org/gpu/gl"
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_ "gioui.org/app/internal/cocoainit"
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)
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/*
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#cgo CFLAGS: -DGL_SILENCE_DEPRECATION -Werror -Wno-deprecated-declarations -fmodules -fobjc-arc -x objective-c
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#include <CoreFoundation/CoreFoundation.h>
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__attribute__ ((visibility ("hidden"))) CFTypeRef gio_headless_newContext(void);
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__attribute__ ((visibility ("hidden"))) void gio_headless_releaseContext(CFTypeRef ctxRef);
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__attribute__ ((visibility ("hidden"))) void gio_headless_clearCurrentContext(CFTypeRef ctxRef);
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__attribute__ ((visibility ("hidden"))) void gio_headless_makeCurrentContext(CFTypeRef ctxRef);
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__attribute__ ((visibility ("hidden"))) void gio_headless_prepareContext(CFTypeRef ctxRef);
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*/
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import "C"
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type nsContext struct {
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ctx C.CFTypeRef
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prepared bool
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}
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func newGLContext() (context, error) {
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ctx := C.gio_headless_newContext()
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return &nsContext{ctx: ctx}, nil
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}
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func (c *nsContext) MakeCurrent() error {
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C.gio_headless_makeCurrentContext(c.ctx)
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if !c.prepared {
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C.gio_headless_prepareContext(c.ctx)
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c.prepared = true
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}
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return nil
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}
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func (c *nsContext) ReleaseCurrent() {
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C.gio_headless_clearCurrentContext(c.ctx)
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}
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func (c *nsContext) Backend() (backend.Device, error) {
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return gl.NewBackend(nil)
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}
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func (d *nsContext) Release() {
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if d.ctx != 0 {
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C.gio_headless_releaseContext(d.ctx)
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d.ctx = 0
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}
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}
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