public void Prefilter()
{
if (env == null)
{
Debug.LogError("Assign environment map first");
}
List <Color[]> envMapData = new List <Color[]>();
envMapData.Add(env.GetPixels(CubemapFace.PositiveX));
envMapData.Add(env.GetPixels(CubemapFace.NegativeX));
envMapData.Add(env.GetPixels(CubemapFace.PositiveZ));
envMapData.Add(env.GetPixels(CubemapFace.NegativeZ));
envMapData.Add(env.GetPixels(CubemapFace.PositiveY));
envMapData.Add(env.GetPixels(CubemapFace.NegativeY));
List <Color> coefficient = PrefilterUtil.PrefilterSH(envMapData, env.width);
Debug.Log("Result SH coefficient is: " +
coefficient[0] + " " +
coefficient[1] + " " +
coefficient[2] + " " +
coefficient[3] + " " +
coefficient[4] + " " +
coefficient[5] + " " +
coefficient[6] + " " +
coefficient[7] + " " +
coefficient[8]);
// Update SH coeffcient
MeshRenderer renderer = GetComponent <MeshRenderer>();
if (renderer != null)
{
renderer.sharedMaterial.SetVector("_SH_L00", new Vector4(coefficient[0].r, coefficient[0].g, coefficient[0].b, 1.0f));
renderer.sharedMaterial.SetVector("_SH_L11", new Vector4(coefficient[1].r, coefficient[1].g, coefficient[1].b, 1.0f));
renderer.sharedMaterial.SetVector("_SH_L10", new Vector4(coefficient[2].r, coefficient[2].g, coefficient[2].b, 1.0f));
renderer.sharedMaterial.SetVector("_SH_L1_1", new Vector4(coefficient[3].r, coefficient[3].g, coefficient[3].b, 1.0f));
renderer.sharedMaterial.SetVector("_SH_L22", new Vector4(coefficient[4].r, coefficient[4].g, coefficient[4].b, 1.0f));
renderer.sharedMaterial.SetVector("_SH_L21", new Vector4(coefficient[5].r, coefficient[5].g, coefficient[5].b, 1.0f));
renderer.sharedMaterial.SetVector("_SH_L20", new Vector4(coefficient[6].r, coefficient[6].g, coefficient[6].b, 1.0f));
renderer.sharedMaterial.SetVector("_SH_L2_1", new Vector4(coefficient[7].r, coefficient[7].g, coefficient[7].b, 1.0f));
renderer.sharedMaterial.SetVector("_SH_L2_2", new Vector4(coefficient[8].r, coefficient[8].g, coefficient[8].b, 1.0f));
}
}
public void Prefilter()
{
if (env == null)
{
Debug.LogError("Assign environment map first");
}
List <Color[]> envMapData = new List <Color[]>();
envMapData.Add(env.GetPixels(CubemapFace.PositiveX));
envMapData.Add(env.GetPixels(CubemapFace.NegativeX));
envMapData.Add(env.GetPixels(CubemapFace.PositiveZ));
envMapData.Add(env.GetPixels(CubemapFace.NegativeZ));
envMapData.Add(env.GetPixels(CubemapFace.PositiveY));
envMapData.Add(env.GetPixels(CubemapFace.NegativeY));
List <Color[]> irradianceMap = PrefilterUtil.PrefilterBruteForce(envMapData, env.width, irradianceMapSize);
// Create cube texture
Cubemap cube = new Cubemap(irradianceMapSize, TextureFormat.ARGB32, false);
cube.SetPixels(irradianceMap[0], CubemapFace.PositiveX);
cube.SetPixels(irradianceMap[1], CubemapFace.NegativeX);
cube.SetPixels(irradianceMap[2], CubemapFace.PositiveZ);
cube.SetPixels(irradianceMap[3], CubemapFace.NegativeZ);
cube.SetPixels(irradianceMap[4], CubemapFace.PositiveY);
cube.SetPixels(irradianceMap[5], CubemapFace.NegativeY);
cube.Apply();
AssetDatabase.CreateAsset(cube, "Assets/Resources/irradianceMap.cubemap");
AssetDatabase.SaveAssets();
cube = AssetDatabase.LoadAssetAtPath <Cubemap>("Assets/Resources/irradianceMap.cubemap");
// Assign it to material
MeshRenderer renderer = GetComponent <MeshRenderer>();
if (renderer != null)
{
renderer.sharedMaterial.SetTexture("_MainTex", cube);
}
}