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Get lightmap data as bytes and blit to atlas

This commit is contained in:
Jarrod Doyle 2024-08-27 07:46:44 +01:00
parent d125fb2cd3
commit bb617ffc52
Signed by: Jayrude
GPG Key ID: 38B57B16E7C0ADF7
2 changed files with 60 additions and 17 deletions
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58
project/code/LGS/Database/Chunks/WorldRep.cs
View File

@ -1,3 +1,4 @@
using System;
using System.IO;
using System.Numerics;
@ -137,6 +138,63 @@ public class WorldRep : IChunk
return Vector4.Zero;
}
}
public readonly byte[] AsBytesRgba()
{
var length = Width * Height * 4;
var bytes = new byte[length];
for (var i = 0; i < length; i++)
{
bytes[i] = 0;
}
// TODO: might be faster to do these fors in the switch?
for (var z = 0; z < Layers; z++)
{
for (var y = 0; y < Height; y++)
{
for (var x = 0; x < Width; x++)
{
var pIdx = 0 + x * Bpp + y * Bpp * Width + z * Bpp * Width * Height;
var r = 0;
var g = 0;
var b = 0;
var a = 0;
switch (Bpp)
{
case 1:
var raw1 = Pixels[pIdx];
r = raw1;
g = raw1;
b = raw1;
a = 255;
break;
case 2:
var raw2 = Pixels[pIdx] + (Pixels[pIdx + 1] << 8);
r = (int)(255 * (raw2 & 31) / 31.0f);
g = (int)(255 * ((raw2 >> 5) & 31) / 31.0f);
b = (int)(255 * ((raw2 >> 10) & 31) / 31.0f);
a = 255;
break;
case 4:
r = Pixels[pIdx + 2];
g = Pixels[pIdx + 1];
b = Pixels[pIdx];
a = Pixels[pIdx + 3];
break;
}
var bIdx = x * 4 + y * 4 * Width;
bytes[bIdx] = (byte)Math.Min(255, bytes[bIdx] + r);
bytes[bIdx + 1] = (byte)Math.Min(255, bytes[bIdx + 1] + g);
bytes[bIdx + 2] = (byte)Math.Min(255, bytes[bIdx + 2] + b);
bytes[bIdx + 3] = (byte)Math.Min(255, bytes[bIdx + 3] + a);
}
}
}
return bytes;
}
}
public byte VertexCount { get; set; }

19
project/code/TMV/Mission.cs
View File

@ -299,23 +299,8 @@ public partial class Mission : Node3D
if (info.cellIndex >= cells.Length) GD.Print($"CellIndex too big: {info.cellIndex}/{cells.Length}");
if (info.lightmapIndex >= cells[info.cellIndex].Lightmaps.Length) GD.Print($"LightmapIndex too big: {info.lightmapIndex}/{cells[info.cellIndex].Lightmaps.Length}");
var lightmap = cells[info.cellIndex].Lightmaps[info.lightmapIndex];
var layers = (uint)lightmap.Layers;
var height = (uint)lightmap.Height;
var width = (uint)lightmap.Width;
for (uint y = 0; y < height; y++)
{
for (uint x = 0; x < width; x++)
{
var rawColour = System.Numerics.Vector4.Zero;
for (uint l = 0; l < layers; l++)
{
rawColour += lightmap.GetPixel(l, x, y);
}
var colour = new Color(MathF.Min(rawColour.X, 1.0f), MathF.Min(rawColour.Y, 1.0f), MathF.Min(rawColour.Z, 1.0f), MathF.Min(rawColour.W, 1.0f));
image.SetPixel((int)(rect.X + x), (int)(rect.Y + y), colour);
}
}
var cellLm = Image.CreateFromData(lightmap.Width, lightmap.Height, false, Image.Format.Rgba8, lightmap.AsBytesRgba());
image.BlitRect(cellLm, new Rect2I(0, 0, lightmap.Width, lightmap.Height), new Vector2I((int)rect.X, (int)rect.Y));
if (!surfaceDataMap.ContainsKey(info.textureId)) GD.Print("Invalid SurfaceDataMap key");
surfaceDataMap[info.textureId].TransformUv2s(info.uvStart, info.uvEnd, (uv) =>