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ui/app,ui/app/internal/gl: work around golang.org/issue/34474

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Apparently, the (*syscall.LazyProc).Call does not keep its arguments
alive across calls.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2019-09-23 20:26:52 +01:00
parent 5c87437542
commit 5c9d35c186
3 changed files with 55 additions and 11 deletions
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ui/app/egl_windows.go
+9 -3
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@@ -61,17 +61,23 @@ func mustLoadDLL(dll *syscall.LazyDLL, name string) {
func eglChooseConfig(disp _EGLDisplay, attribs []_EGLint) (_EGLConfig, bool) {
var cfg _EGLConfig
var ncfg _EGLint
r, _, _ := _eglChooseConfig.Call(uintptr(disp), uintptr(unsafe.Pointer(&attribs[0])), uintptr(unsafe.Pointer(&cfg)), 1, uintptr(unsafe.Pointer(&ncfg)))
a := &attribs[0]
r, _, _ := _eglChooseConfig.Call(uintptr(disp), uintptr(unsafe.Pointer(a)), uintptr(unsafe.Pointer(&cfg)), 1, uintptr(unsafe.Pointer(&ncfg)))
issue34474KeepAlive(a)
return cfg, r != 0
}
func eglCreateContext(disp _EGLDisplay, cfg _EGLConfig, shareCtx _EGLContext, attribs []_EGLint) _EGLContext {
c, _, _ := _eglCreateContext.Call(uintptr(disp), uintptr(cfg), uintptr(shareCtx), uintptr(unsafe.Pointer(&attribs[0])))
a := &attribs[0]
c, _, _ := _eglCreateContext.Call(uintptr(disp), uintptr(cfg), uintptr(shareCtx), uintptr(unsafe.Pointer(a)))
issue34474KeepAlive(a)
return _EGLContext(c)
}
func eglCreateWindowSurface(disp _EGLDisplay, cfg _EGLConfig, win _EGLNativeWindowType, attribs []_EGLint) _EGLSurface {
s, _, _ := _eglCreateWindowSurface.Call(uintptr(disp), uintptr(cfg), uintptr(win), uintptr(unsafe.Pointer(&attribs[0])))
a := &attribs[0]
s, _, _ := _eglCreateWindowSurface.Call(uintptr(disp), uintptr(cfg), uintptr(win), uintptr(unsafe.Pointer(a)))
issue34474KeepAlive(a)
return _EGLSurface(s)
}