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Texturierung von Voxel Terrain angepasst

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This commit is contained in:
Mario Störmer
2026-08-20 16:10:06 +02:00
parent 919ef98137
commit 024a7ffaff
7 changed files with 358 additions and 28 deletions
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34
blight-game/src/main/java/de/blight/game/state/SculptedMeshState.java
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@@ -238,19 +238,22 @@ public class SculptedMeshState extends BaseAppState {
private Material buildMaterial() {
Material mat = new Material(app.getAssetManager(), "MatDefs/BakedTerrain.j3md");
// DiffuseArray + DiffuseScales + AlphaMaps vom Terrain-Material übernehmen,
// damit die gemalten Splatmap-Texturen auch ingame sichtbar sind.
// DiffuseArray + DiffuseScales vom Terrain-Material übernehmen (selbe Textur-Slots).
// AlphaMaps kommen aus den Voxel-spezifischen Splatmap-Arrays in MapData.
if (terrainMaterial != null) {
com.jme3.material.MatParam diffArr = terrainMaterial.getParam("DiffuseArray");
if (diffArr != null) mat.setParam("DiffuseArray", diffArr.getVarType(), diffArr.getValue());
com.jme3.material.MatParam scales = terrainMaterial.getParam("DiffuseScales");
if (scales != null) mat.setParam("DiffuseScales", scales.getVarType(), scales.getValue());
for (String key : new String[]{"AlphaMap", "AlphaMap_1", "AlphaMap_2"}) {
com.jme3.material.MatParam p = terrainMaterial.getParam(key);
if (p != null) mat.setTexture(key, (Texture) p.getValue());
}
}
if (mapData != null) {
com.jme3.texture.Texture2D a0 = buildVoxelAlphaMap(mapData.voxelSplatR, mapData.voxelSplatG, mapData.voxelSplatB, mapData.voxelSplatA);
com.jme3.texture.Texture2D a1 = buildVoxelAlphaMap(mapData.voxelUpperSplatR, mapData.voxelUpperSplatG, mapData.voxelUpperSplatB, mapData.voxelUpperSplatA);
com.jme3.texture.Texture2D a2 = buildVoxelAlphaMap(mapData.voxelThirdSplatR, mapData.voxelThirdSplatG, mapData.voxelThirdSplatB, mapData.voxelThirdSplatA);
mat.setTexture("AlphaMap", a0);
mat.setTexture("AlphaMap_1", a1);
mat.setTexture("AlphaMap_2", a2);
}
// Klippen-Textur: steiler Slot aus MapData für Flat/Steep-Blending
@@ -261,4 +264,21 @@ public class SculptedMeshState extends BaseAppState {
return mat;
}
private com.jme3.texture.Texture2D buildVoxelAlphaMap(byte[] r, byte[] g, byte[] b, byte[] a) {
int size = MapData.SPLAT_SIZE;
java.nio.ByteBuffer buf = com.jme3.util.BufferUtils.createByteBuffer(size * size * 4);
for (int i = 0; i < size * size; i++) {
buf.put(r[i]).put(g[i]).put(b[i]).put(a[i]);
}
buf.flip();
com.jme3.texture.Image img = new com.jme3.texture.Image(
com.jme3.texture.Image.Format.RGBA8, size, size, buf,
com.jme3.texture.image.ColorSpace.Linear);
com.jme3.texture.Texture2D tex = new com.jme3.texture.Texture2D(img);
tex.setWrap(Texture.WrapMode.EdgeClamp);
tex.setMinFilter(Texture.MinFilter.BilinearNoMipMaps);
tex.setMagFilter(Texture.MagFilter.Bilinear);
return tex;
}
}