forked from joejulian/gio
Elias Naur
8cec7d1a40
Instead of calling from the low level context into the window for its surface and dimensions, add a Context.MakeCurrent method that does it directly. The result is simpler and clearer logic. For example, synchronization is obviously no longer needed. It wasn't necessary before, but the reason was unclear. Signed-off-by: Elias Naur <mail@eliasnaur.com>
52 lines
891 B
Go
52 lines
891 B
Go
// SPDX-License-Identifier: Unlicense OR MIT
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package window
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/*
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#include <EGL/egl.h>
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*/
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import "C"
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import (
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"unsafe"
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"gioui.org/app/internal/egl"
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"gioui.org/app/internal/gl"
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)
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type context struct {
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win *window
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*egl.Context
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}
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func (w *window) NewContext() (gl.Context, error) {
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ctx, err := egl.NewContext(nil)
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if err != nil {
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return nil, err
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}
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return &context{win: w, Context: ctx}, nil
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}
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func (c *context) 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 *context) MakeCurrent() error {
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c.Context.ReleaseSurface()
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win, width, height := c.win.nativeWindow(c.Context.VisualID())
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if win == nil {
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return nil
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}
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eglSurf := egl.NativeWindowType(unsafe.Pointer(win))
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if err := c.Context.CreateSurface(eglSurf, width, height); err != nil {
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return err
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}
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if err := c.Context.MakeCurrent(); err != nil {
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return err
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}
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return nil
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}
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