Example #1
0
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))
}
Example #2
0
// 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
}