void CreatePositionMap()
{
if (_hasCreatedWorldPositionAndNormalAndUVMap == true)
{
return;
}
FBOUtility.CreateBuffer(ref _worldPositionMap, BufferWidth, BufferHeight, RenderTextureFormat.ARGBFloat, FilterMode.Bilinear);
if (_script.StageGo != null)
{
var mesh = _script.StageGo.transform.GetComponent <MeshFilter>().sharedMesh;
FBOUtility.ClearBuffer(_worldPositionMap);
FBOUtility.ClearBuffer(_uvMap);
FBOUtility.ClearBuffer(_normalMap);
for (var sm = 0; sm < mesh.subMeshCount; sm++)
{
var vertices = mesh.vertices;
var uvs = mesh.uv;
var normals = mesh.normals;
var indices = mesh.GetIndices(sm);
for (var i = 0; i < indices.Length; i += 3)
{
var idx0 = indices[i + 0];
var idx1 = indices[i + 1];
var idx2 = indices[i + 2];
_setTriangleDataMat.SetVector("_UV0", new Vector3(uvs[idx0].x, uvs[idx0].y, 0.0f));
_setTriangleDataMat.SetVector("_UV1", new Vector3(uvs[idx1].x, uvs[idx1].y, 0.0f));
_setTriangleDataMat.SetVector("_UV2", new Vector3(uvs[idx2].x, uvs[idx2].y, 0.0f));
// --- Position ---
// flip x and z
_setTriangleDataMat.SetVector("_Color0", new Vector4(vertices[idx0].z, vertices[idx0].y, vertices[idx0].x, 1.0f));
_setTriangleDataMat.SetVector("_Color1", new Vector4(vertices[idx1].z, vertices[idx1].y, vertices[idx1].x, 1.0f));
_setTriangleDataMat.SetVector("_Color2", new Vector4(vertices[idx2].z, vertices[idx2].y, vertices[idx2].x, 1.0f));
Graphics.Blit(null, _worldPositionMap, _setTriangleDataMat, 0);
// --- UV ---
_setTriangleDataMat.SetVector("_Color0", new Vector4(uvs[idx0].x, uvs[idx0].y, 0.0f, 1.0f));
_setTriangleDataMat.SetVector("_Color1", new Vector4(uvs[idx1].x, uvs[idx1].y, 0.0f, 1.0f));
_setTriangleDataMat.SetVector("_Color2", new Vector4(uvs[idx2].x, uvs[idx2].y, 0.0f, 1.0f));
Graphics.Blit(null, _uvMap, _setTriangleDataMat, 0);
// --- Normal ---
_setTriangleDataMat.SetVector("_Color0", new Vector4(normals[idx0].x, normals[idx0].y, normals[idx0].z, 1.0f));
_setTriangleDataMat.SetVector("_Color1", new Vector4(normals[idx1].x, normals[idx1].y, normals[idx1].z, 1.0f));
_setTriangleDataMat.SetVector("_Color2", new Vector4(normals[idx2].x, normals[idx2].y, normals[idx2].z, 1.0f));
Graphics.Blit(null, _normalMap, _setTriangleDataMat, 0);
}
}
Graphics.Blit(_worldPositionMap, _worldPositionYGradientMap, _calcGradientMat, 0);
_hasCreatedWorldPositionAndNormalAndUVMap = true;
}
}
