// Update is called once per frame
void Update()
{
//Allow Lighting Parameters to be updated during Play mode
rend.material.SetFloat("_AmbientCoeff", ambient);
rend.material.SetFloat("_DiffuseCoeff", diffuse);
rend.material.SetFloat("_SpecularCoeff", specular);
rend.material.SetFloat("_SpecularPower", powerN);
Vector3[] lightPostions = new Vector3[this.pointLights.Length];
Color[] lightColors = new Color[this.pointLights.Length];
for (int i = 0; i < this.pointLights.Length; i++)
{
lightPostions[i] = this.pointLights[i].GetWorldPosition();
lightColors[i] = this.pointLights[i].color;
}
if (this.pointLights.Length > MAX_LIGHTS)
{
Debug.LogError("You have too many point lights. Max is " + MAX_LIGHTS);
}
else
{
rend.material.SetInt("_NumPointLights", this.pointLights.Length);
PassArrayToShader.Vector3(rend.material, "_PointLightPositions", lightPostions);
PassArrayToShader.Color(rend.material, "_PointLightColors", lightColors);
}
}
// Update is called once per frame
void Update()
{
// Get renderer component (in order to pass params to shader)
MeshRenderer renderer = this.gameObject.GetComponent <MeshRenderer>();
// Pass updated light positions to shader
Vector3[] lightPositions = new Vector3[this.pointLights.Length];
Color[] lightColors = new Color[this.pointLights.Length];
for (int i = 0; i < this.pointLights.Length; i++)
{
lightPositions[i] = this.pointLights[i].GetWorldPosition();
lightColors[i] = this.pointLights[i].color;
}
// Note: We need to be careful since we only have a fixed amount of memory
// for the light sources in the shader (MAX_LIGHTS). It's easily possible to
// overflow it if the pointLights array has more than MAX_LIGHTS, so might be
// worth doing an extra check like below. The only issue is if we change
// MAX_LIGHTS in the shader, it also has to be correspondingly changed in
// this script.
if (this.pointLights.Length > MAX_LIGHTS)
{
Debug.LogError("Number of lights exceeds the maximum shader limit");
}
else
{
// Pass the actual number of lights to the shader
renderer.material.SetInt("_NumPointLights", this.pointLights.Length);
// For Unity 5.3 and below; Unity 5.4 and above provides an array passing interface
// via the material class itself (like SetInt() above)
PassArrayToShader.Vector3(renderer.material, "_PointLightPositions", lightPositions);
PassArrayToShader.Color(renderer.material, "_PointLightColors", lightColors);
}
}