func glGetInfoLog(shaderOrProgram gl.Uint, isShader bool) string {
var l = gl.Sizei(256)
var s = gl.GLStringAlloc(l)
defer gl.GLStringFree(s)
if isShader {
gl.GetShaderInfoLog(shaderOrProgram, l, nil, s)
} else {
gl.GetProgramInfoLog(shaderOrProgram, l, nil, s)
}
return gl.GoString(s)
}
func glGetLocation(glProg gl.Uint, name string, isAtt bool) gl.Uint {
var a gl.Int
var s = gl.GLString(name)
defer gl.GLStringFree(s)
if isAtt {
a = gl.GetAttribLocation(glProg, s)
} else {
a = gl.GetUniformLocation(glProg, s)
}
if a < 0 {
panic("Shader attribute or uniform bind error")
}
return gl.Uint(a)
}