public void SaveAtlasToFile(string pathOfAtlas, List <Texture2D> texturesOfMaterial, List <Vector2> scales, List <Vector2> offsets)
{
isTextureReadableList.Clear();
textureFormatsUnsupported.Clear();
texturePlatforms.Clear();
textureImporterFormats.Clear();
maxTexturesSizes.Clear();
for (int i = 0; i < texturesOfMaterial.Count; i++)
{
bool textureNeedsImporting = false;
//check if the texture is readable or not, in case is not readable then set it temporarly to readable in order to get the pixels.
string texturePath = AssetDatabase.GetAssetPath(texturesOfMaterial[i]);
if (texturePath != "") //check that the texture is not a generated texture.
{
TextureImporter textureImporter = (TextureImporter)AssetImporter.GetAtPath(texturePath);
isTextureReadableList.Add(textureImporter.isReadable);
if (!textureImporter.isReadable)
{
textureImporter.isReadable = true;
textureNeedsImporting = true;
}
}
else
{
isTextureReadableList.Add(true); //texture is a generated texture, no need to reimport
}
/*** make texToProcess format understandable regardless the format it comes from and save the state of the texture ***/
TextureImporter texImporter = AssetImporter.GetAtPath(texturePath) as TextureImporter;
texturePlatforms.Add("");
maxTexturesSizes.Add(-1);
textureImporterFormats.Add((texturePath != "") ? texImporter.textureFormat : TextureImporterFormat.ARGB32);//if the texture exists in the project settings use its format, else a readable format by default
bool unsupportedTextureFormat = !Utils.TextureSupported(texturesOfMaterial[i]);
textureFormatsUnsupported.Add(unsupportedTextureFormat);
if (unsupportedTextureFormat)
{
texImporter.textureType = TextureImporterType.Advanced;
if (EditorUserBuildSettings.activeBuildTarget == BuildTarget.WebPlayer || EditorUserBuildSettings.activeBuildTarget == BuildTarget.WebPlayerStreamed)
{
texturePlatforms[i] = "Web";
}
else if (EditorUserBuildSettings.activeBuildTarget == BuildTarget.iOS)
{
texturePlatforms[i] = "iPhone";
}
else if (EditorUserBuildSettings.activeBuildTarget == BuildTarget.Android)// || EditorUserBuildSettings.activeBuildTarget == BuildTarget.SamsungTV)
{
texturePlatforms[i] = "Android";
}
else if (EditorUserBuildSettings.activeBuildTarget == BuildTarget.StandaloneOSXIntel || EditorUserBuildSettings.activeBuildTarget == BuildTarget.StandaloneOSXIntel64 ||
EditorUserBuildSettings.activeBuildTarget == BuildTarget.StandaloneOSXUniversal || EditorUserBuildSettings.activeBuildTarget == BuildTarget.StandaloneWindows ||
EditorUserBuildSettings.activeBuildTarget == BuildTarget.StandaloneLinux || EditorUserBuildSettings.activeBuildTarget == BuildTarget.StandaloneLinux64 ||
EditorUserBuildSettings.activeBuildTarget == BuildTarget.StandaloneLinuxUniversal || EditorUserBuildSettings.activeBuildTarget == BuildTarget.StandaloneWindows64)
{
texturePlatforms[i] = "Standalone";
}
int maxTexSize = maxTexturesSizes[i];
TextureImporterFormat texImporterFormat = textureImporterFormats[i];
texImporter.GetPlatformTextureSettings(texturePlatforms[i], out maxTexSize, out texImporterFormat);//save the values
texImporter.textureFormat = TextureImporterFormat.ARGB32;
maxTexturesSizes[i] = maxTexSize;
textureImporterFormats[i] = texImporterFormat;
texImporter.SetPlatformTextureSettings(texturePlatforms[i], maxTexturesSizes[i], TextureImporterFormat.ARGB32);//set to a readabale format
textureNeedsImporting = true;
}
if (textureNeedsImporting)
{
AssetDatabase.ImportAsset(texturePath, ImportAssetOptions.ForceUpdate);
}
/**********************************************************************************************************/
}
Texture2D canvas = new Texture2D(atlasWidth, atlasHeight, TextureFormat.ARGB32, false);
Color[] baseCol = new Color[atlasWidth * atlasHeight];
for (int i = 0; i < baseCol.Length; i++)
{
baseCol[i] = new Color(0, 0, 0, 0);
}
canvas.SetPixels(0, 0, atlasWidth, atlasHeight, baseCol);
for (int i = 0; i < texturesOfMaterial.Count; i++)
{
Texture2D texToProcess = texturesOfMaterial[i];
//textToProcess = AssetDatabase.LoadAssetAtPath(AssetDatabase.GetAssetPath(texturesOfMaterial[i], typeof(Texture2D)) as Texture2D;//revisar si getassetpath es ""
//check that the texture has the same size than the first catched texture when atlasing (Normally is _MainTex)
//if the texture size that we are processing is not the same size of the atlas, then we have to resize the texture.
if (texToProcess.width != Mathf.RoundToInt(texturePositions[i].width) ||
texToProcess.height != Mathf.RoundToInt(texturePositions[i].height))
{
texToProcess = Utils.CopyTexture(texturesOfMaterial[i], TextureFormat.ARGB32);
Debug.LogWarning("Resizing texture: " + texturesOfMaterial[i].name + " from " +
texToProcess.width + "x" + texToProcess.height + " to " +
Mathf.RoundToInt(texturePositions[i].width) + "x" + Mathf.RoundToInt(texturePositions[i].height) +
" In order to make it fit in the atlas.");
TextureScale.Point(texToProcess, Mathf.RoundToInt(texturePositions[i].width), Mathf.RoundToInt(texturePositions[i].height));
}
texToProcess = TileManager.TileTexture(texToProcess, scales[i], offsets[i]);
Color[] texturePixels = texToProcess.GetPixels();
if (canvas == null)
{
Debug.LogError("ERROR: Cant bake atlas with multiple materials and an unsupported format, check README.txt on known issues for a workaround. Clear atlas to restore original objects textures");
return;
}
canvas.SetPixels(Mathf.RoundToInt(texturePositions[i].x),
Mathf.RoundToInt(texturePositions[i].y),
Mathf.RoundToInt(texturePositions[i].width),
Mathf.RoundToInt(texturePositions[i].height),
texturePixels);
/**********************************************************************************************************/
}
canvas.Apply();
byte[] bytes = canvas.EncodeToPNG();
File.WriteAllBytes(pathOfAtlas, bytes);
int nextPowerOfTwoCanvasSize = Mathf.NextPowerOfTwo(canvas.width) < Constants.MaxSupportedUnityTexture ? Mathf.NextPowerOfTwo(canvas.width) : Constants.MaxSupportedUnityTexture;//calculate canvas size
AssetDatabase.ImportAsset(pathOfAtlas);
TextureImporter atlasTextureImporter = AssetImporter.GetAtPath(pathOfAtlas) as TextureImporter;
atlasTextureImporter.maxTextureSize = nextPowerOfTwoCanvasSize;//Set the canvas size automatically
/**Check if the generated atlas needs to be a normal map, if it needs to be then mark it. we check if it needs by checking texturesOfMaterial[i] importer is a normal map. if it is mark it.****/
string testTexturePath = "";
bool foundTextureInProject = false;
for (int i = 0; i < texturesOfMaterial.Count; i++)
{
testTexturePath = AssetDatabase.GetAssetPath(texturesOfMaterial[i]);
if (testTexturePath != "") //we found a texture that resides on the project view, now we can check if is a normal map
{
foundTextureInProject = true;
break;
}
}
if (foundTextureInProject)
{
TextureImporter textureImporterFlagNormalMap = AssetImporter.GetAtPath(testTexturePath) as TextureImporter;
if (textureImporterFlagNormalMap.normalmap) //texture is a normal map!, lets mark our atlas as a normal mapped atlas!
{
atlasTextureImporter.textureType = TextureImporterType.Bump;
atlasTextureImporter.normalmap = true;
AssetDatabase.ImportAsset(pathOfAtlas);
}
}
else
{
Debug.LogWarning("Couldnt know if atlas '" + pathOfAtlas + "' was a normal map, if it was, please set it as a normal map; textures might look weird");
}
/**************************************************************************************************************************************************************************************************/
//after finishing all the reading of the textures, revert the state of each of the textures processed.
for (int i = 0; i < texturesOfMaterial.Count; i++)
{
bool textureNeedsReimporting = false;
string texturePath = AssetDatabase.GetAssetPath(texturesOfMaterial[i]);
//set the texture as not readable
if (!isTextureReadableList[i])
{
TextureImporter textureImporter = AssetImporter.GetAtPath(texturePath) as TextureImporter;
textureImporter.isReadable = false;
textureNeedsReimporting = true;
//AssetDatabase.ImportAsset(texturePath);
}
if (textureFormatsUnsupported[i])
{
//lets revert to the original texture format
TextureImporter textureImporter = AssetImporter.GetAtPath(texturePath) as TextureImporter;
textureImporter.textureFormat = textureImporterFormats[i];
textureImporter.SetPlatformTextureSettings(texturePlatforms[i], maxTexturesSizes[i], textureImporterFormats[i]);
textureNeedsReimporting = true;
//AssetDatabase.ImportAsset(texturePath);
}
if (textureNeedsReimporting)
{
AssetDatabase.ImportAsset(texturePath);
}
}
}
public static Texture2D TileTexture(Texture2D tex, Vector2 scale, Vector2 offset)
{
if (scale == Vector2.one && offset == Vector2.zero)
{
return(tex);
}
Texture2D canvas = new Texture2D(tex.width, tex.height, TextureFormat.ARGB32, false);
Texture2D textureToTile = Utils.CopyTexture(tex, TextureFormat.ARGB32);
bool invertX = false;
bool invertY = false;
float scaleX = scale.x == 0 ? 0.01f : scale.x;
if (scaleX < 0)
{
scaleX *= -1;
invertX = true;
}
float scaleY = scale.y == 0 ? 0.01f : scale.y;
if (scaleY < 0)
{
scaleY *= -1;
invertY = true;
}
float newSizeX = (float)tex.width / scaleX > Constants.MaxTextureSize ? Constants.MaxTextureSize : (float)tex.width / scaleX;
float newSizeY = (float)tex.height / scaleY > Constants.MaxTextureSize ? Constants.MaxTextureSize : (float)tex.height / scaleY;
while (true)
{
try {
TextureScale.Point(textureToTile,
Mathf.RoundToInt(newSizeX),
Mathf.RoundToInt(newSizeY));
break;
} catch (System.OutOfMemoryException) {
//if the system we are running this into is out of memory (because of the scaling)
//then reduce the tile size until there are no out of memory exceptions
newSizeY *= 0.95f;
newSizeX *= 0.95f;
Debug.LogWarning("Tiling too small, out of memory, reducing tiled texture size..." + (newSizeX * newSizeY));
}
}
int offsetPixelX = (int)((offset.x % 1) * (float)textureToTile.width);
int offsetPixelY = (int)((offset.y % 1) * (float)textureToTile.height);
for (int i = 0; i < canvas.width; i++)
{
for (int j = 0; j < canvas.height; j++)
{
canvas.SetPixel(i, j, textureToTile.GetPixel(invertX ? (textureToTile.width - 1 - i + offsetPixelX) % textureToTile.width : (i + offsetPixelX) % textureToTile.width,
invertY ? (textureToTile.height - 1 - j + offsetPixelY) % textureToTile.height : (j + offsetPixelY) % textureToTile.height));
}
}
canvas.Apply();
return(canvas);
}