func SetUniformV2(shader, variable string, v linear.Vec2) {
prog, ok := shader_progs[shader]
if !ok {
if !warned_names[shader] {
Warn().Printf("Tried to set a uniform in an unknown shader '%s'", shader)
warned_names[shader] = true
}
return
}
bvariable := []byte(fmt.Sprintf("%s\x00", variable))
loc := gl.GetUniformLocation(prog, (*gl.Char)(unsafe.Pointer(&bvariable[0])))
gl.Uniform2f(loc, gl.Float(v.X), gl.Float(v.Y))
}
// SetVariable2f sets a specified variable to the two supplied integers to
// be passed into an effect.
func (effect *Effect) SetVariable2f(variable string, val1 float32, val2 float32) error {
var currEffect gl.Int
gl.GetIntegerv(gl.CURRENT_PROGRAM, &currEffect)
if gl.Uint(currEffect) != effect.program {
return errors.New("effect is not currently in use")
}
effect.checkUniformVariable(variable)
gl.Uniform2f(effect.uniforms[variable], gl.Float(val1), gl.Float(val2))
return nil
}