private static void AddSpriteFace(Chunk chunk, Vector3[] faceOffsetVertices, Vector3 positionOffset, Voxel voxel, Int2 textureIndicies,
VertexSprite[] vertices, uint[] indexes, int vertexOffset, int vertexIndex, int faceOffset)
{
for (var m = 0; m < faceOffsetVertices.Length; m++)
{
var position = faceOffsetVertices[m] + chunk.OffsetVector + positionOffset;
var textureOffset = FaceBuildInfo.UvOffsetIndexes[m];
vertices[vertexOffset + m + faceOffset * 4] = new VertexSprite(position, textureIndicies.X + textureOffset.X, textureIndicies.Y + textureOffset.Y, voxel.MetaData, voxel.CompositeLight);
}
var indexOffset = (vertexIndex * 6 * 2) + (faceOffset * 6 * 2);
indexes[indexOffset + 0] = (uint)(vertexOffset + 0 + faceOffset * 4);
indexes[indexOffset + 1] = (uint)(vertexOffset + 2 + faceOffset * 4);
indexes[indexOffset + 2] = (uint)(vertexOffset + 3 + faceOffset * 4);
indexes[indexOffset + 3] = (uint)(vertexOffset + 0 + faceOffset * 4);
indexes[indexOffset + 4] = (uint)(vertexOffset + 1 + faceOffset * 4);
indexes[indexOffset + 5] = (uint)(vertexOffset + 2 + faceOffset * 4);
indexes[indexOffset + 6] = (uint)(vertexOffset + 2 + faceOffset * 4);
indexes[indexOffset + 7] = (uint)(vertexOffset + 1 + faceOffset * 4);
indexes[indexOffset + 8] = (uint)(vertexOffset + 0 + faceOffset * 4);
indexes[indexOffset + 9] = (uint)(vertexOffset + 3 + faceOffset * 4);
indexes[indexOffset + 10] = (uint)(vertexOffset + 2 + faceOffset * 4);
indexes[indexOffset + 11] = (uint)(vertexOffset + 0 + faceOffset * 4);
}
private static BufferDefinition <VertexSprite> BuildSprite(Chunk chunk, Device device)
{
if (WorldSettings.IsChangeTrackingEnabled && !chunk.BuildingContext.IsSpriteChanged)
{
return(chunk.Buffers.BufferSprite);
}
var numberOfFaces = chunk.BuildingContext.SpriteBlocks.Count * 2 + chunk.BuildingContext.SingleSidedSpriteBlocks.Count;
if (numberOfFaces == 0)
{
return(null);
}
var vertices = new VertexSprite[numberOfFaces * 4];
var indexes = new uint[numberOfFaces * 12];
var secondFaceOffset = chunk.BuildingContext.SpriteBlocks.Count;
for (var n = 0; n < chunk.BuildingContext.SpriteBlocks.Count; n++)
{
var flatIndex = chunk.BuildingContext.SpriteBlocks[n];
var index = chunk.FromFlatIndex(flatIndex);
var vertexOffset = n * 4;
var positionOffset = new Vector3(index.X, index.Y, index.Z);
var voxel = chunk.GetVoxel(flatIndex);
var definition = voxel.GetDefinition();
AddSpriteFace(chunk, FaceBuildInfo.SpriteVertices.Left, positionOffset, voxel, definition.TextureIndexes.Faces[(byte)Face.Left], vertices, indexes, vertexOffset, n, 0);
AddSpriteFace(chunk, FaceBuildInfo.SpriteVertices.Right, positionOffset, voxel, definition.TextureIndexes.Faces[(byte)Face.Right], vertices, indexes, vertexOffset, n, secondFaceOffset);
}
var thirdFaceOffset = secondFaceOffset * 2;
for (var n = 0; n < chunk.BuildingContext.SingleSidedSpriteBlocks.Count; n++)
{
var flatIndex = chunk.BuildingContext.SingleSidedSpriteBlocks[n];
var index = chunk.FromFlatIndex(flatIndex);
var vertexOffset = n * 4;
var voxel = chunk.GetVoxel(flatIndex);
var positionOffset = new Vector3(index.X, index.Y, index.Z) + SingleSidedOffsets[(byte)voxel.Orientation];
var definition = voxel.GetDefinition();
var face = FaceBuildInfo.FaceVertices.Faces[(byte)voxel.Orientation];
AddSpriteFace(chunk, face, positionOffset, voxel, definition.TextureIndexes.Faces[(byte)Face.Left], vertices, indexes, vertexOffset, n, thirdFaceOffset);
}
//return null;
return(new BufferDefinition <VertexSprite>(device, vertices, indexes));
}
