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)
}
func ShaderLocation(glProg gl.Uint, name string, isAtt bool) gl.Int {
var loc gl.Int
var s = gl.GLString(name)
defer gl.GLStringFree(s)
if isAtt {
loc = gl.GetAttribLocation(glProg, s)
} else {
loc = gl.GetUniformLocation(glProg, s)
}
// if loc < 0 { log.Panicf("sprog att/uni %s: bind error %d", name, loc) }
// PanicIfErrors("ShaderLocation(n=%v a=%v)", name, isAtt)
LastErrors()
return loc
}