forked from joejulian/gio
Elias Naur
6c3711d95a
There is no longer any shared code between OpenGL backends (unlike EGL backends). Signed-off-by: Elias Naur <mail@eliasnaur.com>
46 lines
757 B
Go
46 lines
757 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"
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"gioui.org/internal/gl"
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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 newContext() (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) API() gpu.API {
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return gpu.OpenGL{Context: gl.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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