void RevertTerrainSplats(MicroSplatTerrain t)
{
MicroSplatKeywords keywords = MicroSplatUtilities.FindOrCreateKeywords(t.templateMaterial);
if (keywords.IsKeywordEnabled("_CUSTOMSPLATTEXTURES"))
{
if (t.customControl0 == null)
{
Debug.LogError("Could not revert terrain because textures are missing!");
return;
}
UncompressTexture(t.customControl0);
UncompressTexture(t.customControl1);
UncompressTexture(t.customControl2);
UncompressTexture(t.customControl3);
UncompressTexture(t.customControl4);
UncompressTexture(t.customControl5);
UncompressTexture(t.customControl6);
UncompressTexture(t.customControl7);
int size = t.customControl0.width;
int layers = t.terrain.terrainData.alphamapLayers;
t.terrain.terrainData.alphamapResolution = size;
var maps = t.terrain.terrainData.GetAlphamaps(0, 0, size, size);
ExtractSplats(ref maps, t.customControl0, 0, layers);
ExtractSplats(ref maps, t.customControl1, 4, layers);
ExtractSplats(ref maps, t.customControl2, 8, layers);
ExtractSplats(ref maps, t.customControl3, 12, layers);
ExtractSplats(ref maps, t.customControl4, 16, layers);
ExtractSplats(ref maps, t.customControl5, 20, layers);
ExtractSplats(ref maps, t.customControl6, 24, layers);
ExtractSplats(ref maps, t.customControl7, 28, layers);
t.terrain.terrainData.SetAlphamaps(0, 0, maps);
EditorUtility.SetDirty(t.terrain.terrainData);
keywords.DisableKeyword("_CUSTOMSPLATTEXTURES");
MicroSplatShaderGUI.MicroSplatCompiler compiler = new MicroSplatShaderGUI.MicroSplatCompiler();
compiler.Compile(t.templateMaterial);
t.customControl0 = null;
t.customControl1 = null;
t.customControl2 = null;
t.customControl3 = null;
t.customControl4 = null;
t.customControl5 = null;
t.customControl6 = null;
t.customControl7 = null;
EditorUtility.SetDirty(t);
MicroSplatTerrain.SyncAll();
}
}
void CompressTerrainSplats(MicroSplatTerrain t)
{
int splatCount = t.terrain.terrainData.alphamapTextureCount;
// write out
for (int i = 0; i < splatCount; ++i)
{
var tex = t.terrain.terrainData.GetAlphamapTexture(i);
var path = MicroSplatUtilities.RelativePathFromAsset(t);
path += "/" + t.name + "_splat" + i + ".tga";
System.IO.File.WriteAllBytes(path, tex.EncodeToTGA());
}
AssetDatabase.Refresh();
// load and adjust importer
for (int i = 0; i < splatCount; ++i)
{
var path = MicroSplatUtilities.RelativePathFromAsset(t);
path += "/" + t.name + "_splat" + i + ".tga";
var tex = CompressTexture(path, false);
if (i == 0)
{
t.customControl0 = tex;
}
else if (i == 1)
{
t.customControl1 = tex;
}
else if (i == 2)
{
t.customControl2 = tex;
}
else if (i == 3)
{
t.customControl3 = tex;
}
else if (i == 4)
{
t.customControl4 = tex;
}
else if (i == 5)
{
t.customControl5 = tex;
}
else if (i == 6)
{
t.customControl6 = tex;
}
else if (i == 7)
{
t.customControl7 = tex;
}
}
EditorUtility.SetDirty(t);
MicroSplatKeywords keywords = MicroSplatUtilities.FindOrCreateKeywords(t.templateMaterial);
if (!keywords.IsKeywordEnabled("_CUSTOMSPLATTEXTURES"))
{
keywords.EnableKeyword("_CUSTOMSPLATTEXTURES");
MicroSplatShaderGUI.MicroSplatCompiler compiler = new MicroSplatShaderGUI.MicroSplatCompiler();
compiler.Compile(t.templateMaterial);
MicroSplatTerrain.SyncAll();
}
// destructive operation
t.terrain.terrainData.alphamapResolution = 16;
}
