mirror of
https://git.sr.ht/~eliasnaur/gio
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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>
47 lines
809 B
Go
47 lines
809 B
Go
// SPDX-License-Identifier: Unlicense OR MIT
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package headless
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import (
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"errors"
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"syscall/js"
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"gioui.org/gpu/backend"
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"gioui.org/gpu/gl"
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"gioui.org/internal/glimpl"
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)
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type jsContext struct {
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ctx js.Value
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}
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func newGLContext() (context, error) {
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doc := js.Global().Get("document")
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cnv := doc.Call("createElement", "canvas")
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ctx := cnv.Call("getContext", "webgl2")
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if ctx.IsNull() {
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ctx = cnv.Call("getContext", "webgl")
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}
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if ctx.IsNull() {
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return nil, errors.New("headless: webgl is not supported")
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}
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c := &jsContext{
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ctx: ctx,
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}
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return c, nil
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}
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func (c *jsContext) Backend() (backend.Device, error) {
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return gl.NewBackend(glimpl.Context(c.ctx))
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}
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func (c *jsContext) Release() {
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}
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func (c *jsContext) ReleaseCurrent() {
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}
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func (c *jsContext) MakeCurrent() error {
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return nil
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}
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