gles2 runtime error: cgo argument has Go pointer to Go pointer

[darmie]

I am trying to port nanovgo to android using android-go

I am trying to pass vertices []float32 data into gl.BufferData but I am getting a runtime error.

gl.BufferData(gl.ARRAY_BUFFER, len(b), unsafe.Pointer(&vertexes), gl.STREAM_DRAW)

06-05 12:22:17.041 32181-0/com.go_android.minimal E/Go: panic: runtime error: cgo argument has Go pointer to Go pointer
06-05 12:22:17.041 32181-0/com.go_android.minimal E/Go: goroutine 7 [running]:
06-05 12:22:17.041 32181-0/com.go_android.minimal E/Go: github.com/xlab/android-go/gles3.BufferData.func1(0x8892, 0x3940, 0xb7ae2258, 0x88e0)
06-05 12:22:17.041 32181-0/com.go_android.minimal E/Go: 	/Users/damilare/go/src/github.com/xlab/android-go/gles3/gles3.go:110 +0x3c
06-05 12:22:17.041 32181-0/com.go_android.minimal E/Go: github.com/xlab/android-go/gles3.BufferData(0x8892, 0x3940, 0xb7ae2258, 0x88e0)
06-05 12:22:17.041 32181-0/com.go_android.minimal E/Go: 	/Users/damilare/go/src/github.com/xlab/android-go/gles3/gles3.go:110 +0x34
06-05 12:22:17.042 32181-0/com.go_android.minimal E/Go: github.com/shibukawa/nanovgo.(*glParams).renderFlush(0xb7a5e258)
06-05 12:22:17.042 32181-0/com.go_android.minimal E/Go: 	/Users/damilare/go/src/github.com/shibukawa/nanovgo/gl_backend.go:584 +0x188
06-05 12:22:17.042 32181-0/com.go_android.minimal E/Go: github.com/shibukawa/nanovgo.(*Context).EndFrame(0xb7abe090)
06-05 12:22:17.042 32181-0/com.go_android.minimal E/Go: 	/Users/damilare/go/src/github.com/shibukawa/nanovgo/nanovgo.go:169 +0x28
06-05 12:22:17.042 32181-0/com.go_android.minimal E/Go: main.draw(0xb7abe090)
06-05 12:22:17.042 32181-0/com.go_android.minimal E/Go: 	/Users/damilare/go/src/github.com/darmie/nanovg-android/main.go:86 +0x180
06-05 12:22:17.042 32181-0/com.go_android.minimal E/Go: main.main.func1(0xd7cf0f00, 0xd7d602a8)
06-05 12:22:17.042 32181-0/com.go_android.minimal E/Go: 	/Users/damilare/go/src/github.com/darmie/nanovg-android/main.go:53 +0x35c
06-05 12:22:17.042 32181-0/com.go_android.minimal E/Go: github.com/xlab/android-go/app.Main(0xb7a7ffc4)
06-05 12:22:17.042 32181-0/com.go_android.minimal E/Go: 	/Users/damilare/go/src/github.com/xlab/android-go/app/app.go:86 +0x38
06-05 12:22:17.042 32181-0/com.go_android.minimal E/Go: main.main()
06-05 12:22:17.042 32181-0/com.go_android.minimal E/Go: 	/Users/damilare/go/src/github.com/darmie/nanovg-android/main.go:37 +0x17c
06-05 12:22:17.042 32181-0/com.go_android.minimal E/Go: github.com/xlab/android-go/app/internal/callfn.CallFn(0xd7c6d39c)
06-05 12:22:17.042 32181-0/com.go_android.minimal E/Go: 	/Users/damilare/go/src/github.com/xlab/android-go/app/internal/callfn/callfn_arm.s:10 +0x18
06-05 12:22:17.042 32181-0/com.go_android.minimal E/Go: created by github.com/xlab/android-go/app.callMain
06-05 12:22:17.042 32181-0/com.go_android.minimal E/Go: 	/Users/damilare/go/src/github.com/xlab/android-go/app/app.go:50 +0x2e4
06-05 12:22:17.043 32181-32208/com.go_android.minimal A/libc: Fatal signal 6 (SIGABRT), code -6 in tid 32208 (android.minimal)

[xlab]

Yeah should've used unsafe.Pointer(&vertexes[0]) instead.