mirror of
https://github.com/hajimehoshi/ebiten.git
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38 lines
738 B
Go
38 lines
738 B
Go
// SPDX-License-Identifier: MIT
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package gl
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import (
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"fmt"
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"unsafe"
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"golang.org/x/sys/windows"
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)
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var (
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opengl32 = windows.NewLazySystemDLL("opengl32")
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wglGetProcAddress = opengl32.NewProc("wglGetProcAddress")
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)
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func getProcAddress(namea string) uintptr {
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cname, err := windows.BytePtrFromString(namea)
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if err != nil {
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panic(err)
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}
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r, _, err := wglGetProcAddress.Call(uintptr(unsafe.Pointer(cname)))
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if err != nil && err != windows.ERROR_SUCCESS && err != windows.ERROR_PROC_NOT_FOUND {
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panic(fmt.Sprintf("gl: wglGetProcAddress failed: %s", err.Error()))
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}
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if r != 0 {
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return r
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}
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p := opengl32.NewProc(namea)
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if err := p.Find(); err != nil {
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// The proc is not found.
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return 0
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}
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return p.Addr()
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}
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