60 lines
1.0 KiB
Go
60 lines
1.0 KiB
Go
 
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// SPDX-License-Identifier: Unlicense OR MIT
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//go:build !noopengl
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package app
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import (
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"gioui.org/internal/egl"
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)
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type glContext struct {
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win *window
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*egl.Context
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}
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func init() {
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drivers = append(drivers, gpuAPI{
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priority: 2,
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initializer: func(w *window) (context, error) {
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disp := egl.NativeDisplayType(w.HDC())
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ctx, err := egl.NewContext(disp)
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if err != nil {
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return nil, err
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}
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win, _, _ := w.HWND()
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eglSurf := egl.NativeWindowType(win)
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if err := ctx.CreateSurface(eglSurf); err != nil {
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ctx.Release()
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return nil, err
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}
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if err := ctx.MakeCurrent(); err != nil {
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ctx.Release()
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return nil, err
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}
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defer ctx.ReleaseCurrent()
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ctx.EnableVSync(true)
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return &glContext{win: w, Context: ctx}, nil
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},
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})
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}
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func (c *glContext) Release() {
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if c.Context != nil {
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c.Context.Release()
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c.Context = nil
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}
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}
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func (c *glContext) Refresh() error {
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return nil
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}
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func (c *glContext) Lock() error {
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return c.Context.MakeCurrent()
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}
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func (c *glContext) Unlock() {
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c.Context.ReleaseCurrent()
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}
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