public static void GenerateFXMap(Material targetMat, string title, string prop)
{
GUI.backgroundColor = EditorHelper.ButtonBackgroundActive;
string buttonString = "Repack Textures into MaterialFX FX Map";
if (FXMapEnabled)
{
GUI.backgroundColor = EditorHelper.ButtonBackgroundDelete; buttonString = "Cancel";
}
GUILayout.BeginHorizontal();
if (GUILayout.Button(buttonString))
{
FXMapEnabled = !FXMapEnabled;
}
EditorHelper.HelpButton("prop" + "_help");
GUILayout.EndHorizontal();
GUILayout.BeginHorizontal();
EditorHelper.HelpItem("prop" + "_help", "Text");
GUILayout.EndHorizontal();
GUI.backgroundColor = EditorHelper.backgroundDefault;
if (FXMapEnabled == true)
{
GUILayout.BeginHorizontal("BOX");
Texture2D CheckTexture;
GUILayout.BeginVertical();
GUILayout.Label("Snow");
CheckTexture = (Texture2D)EditorGUILayout.ObjectField("", tempMetallic, typeof(Texture2D), false, GUILayout.Width(EditorHelper.TextureWidth));
if (CheckTexture != tempMetallic)
{
tempMetallic = CheckTexture;
}
tempMetallicChannel = (EditorHelper.TextureChannels)EditorGUILayout.Popup((int)tempMetallicChannel, EditorHelper.textureChannelStrings, EditorHelper.PopUp, GUILayout.Width(70));
GUILayout.Space(5);
GUILayout.EndVertical();
GUILayout.BeginVertical();
GUILayout.Label("Growth");
CheckTexture = (Texture2D)EditorGUILayout.ObjectField("", tempThick, typeof(Texture2D), false, GUILayout.Width(EditorHelper.TextureWidth));
if (CheckTexture != tempThick)
{
tempThick = CheckTexture;
}
tempThickChannel = (EditorHelper.TextureChannels)EditorGUILayout.Popup((int)tempThickChannel, EditorHelper.textureChannelStrings, EditorHelper.PopUp, GUILayout.Width(70));
GUILayout.Space(5);
GUILayout.EndVertical();
GUILayout.BeginVertical();
GUILayout.Label("Wetness");
CheckTexture = (Texture2D)EditorGUILayout.ObjectField("", tempCurve, typeof(Texture2D), false, GUILayout.Width(EditorHelper.TextureWidth));
if (CheckTexture != tempCurve)
{
tempCurve = CheckTexture;
}
tempCurveChannel = (EditorHelper.TextureChannels)EditorGUILayout.Popup((int)tempCurveChannel, EditorHelper.textureChannelStrings, EditorHelper.PopUp, GUILayout.Width(70));
GUILayout.Space(5);
GUILayout.EndVertical();
GUILayout.BeginVertical();
GUILayout.Label("Unused");
CheckTexture = (Texture2D)EditorGUILayout.ObjectField("", tempSmooth, typeof(Texture2D), false, GUILayout.Width(EditorHelper.TextureWidth));
if (CheckTexture != tempSmooth)
{
tempSmooth = CheckTexture;
}
tempSmoothChannel = (EditorHelper.TextureChannels)EditorGUILayout.Popup((int)tempSmoothChannel, EditorHelper.textureChannelStrings, EditorHelper.PopUp, GUILayout.Width(70));
GUILayout.Space(5);
GUILayout.EndVertical();
GUILayout.EndHorizontal();
GUILayout.BeginHorizontal();
GUILayout.Label("Output size :", GUILayout.Width(75));
tempResolution = EditorGUILayout.Popup(tempResolution, new string[] { "256 x 256", "512 x 512", "1024 x 1024", "2048 x 2048", "4096 x 4096", "8192 x 8192" }, EditorHelper.PopUp, GUILayout.Width(100));
GUILayout.Label("Format :", GUILayout.Width(55));
tempFormat = EditorGUILayout.Popup(tempFormat, new string[] { "PNG", "JPEG" }, EditorHelper.PopUp, GUILayout.Width(80));
GUILayout.Space(5);
GUILayout.EndHorizontal();
GUILayout.Space(5);
if (GUILayout.Button("Generate " + targetMat.name + "_MaterialFX_FXMap"))
{
GenerateRepackedTexture(targetMat, tempMetallic, tempMetallicChannel,
tempThick, tempThickChannel,
tempCurve, tempCurveChannel,
tempSmooth, tempSmoothChannel,
targetMat.name + "_MaterialFX_FXMap", tempResolution, tempFormat, "_FXTex");
FXMapEnabled = false;
}
}
}
public static void GenerateRepackedTexture(Material targetMat, Texture2D textureA, EditorHelper.TextureChannels channelA,
Texture2D textureB, EditorHelper.TextureChannels channelB,
Texture2D textureC, EditorHelper.TextureChannels channelC,
Texture2D textureD, EditorHelper.TextureChannels channelD, string filename, int resolution, int format, string MatTex)
{
int res = 256;
if (resolution == 1)
{
res = 512;
}
if (resolution == 2)
{
res = 1024;
}
if (resolution == 3)
{
res = 2048;
}
if (resolution == 4)
{
res = 4096;
}
if (resolution == 5)
{
res = 8192;
}
Texture2D emptyTex = new Texture2D(1, 1, TextureFormat.ARGB32, false);
emptyTex.SetPixel(0, 0, new Color(0, 0, 0, 0));
int width = res;
int height = res;
string path = Path.GetDirectoryName(AssetDatabase.GetAssetPath(targetMat));
string file = path + "/" + filename + ".";
if (format == 0)
{
file += "png";
}
if (format == 1)
{
file += "jpg";
}
Texture2D generatedTexture = new Texture2D(width, height, TextureFormat.ARGB32, false);
Color[] outputColors = new Color[width * height];
Color blankColor = new Color(0, 0, 0, 0);
for (int i = 0; i < width * height; i++)
{
outputColors[i] = blankColor;
}
RenderTexture previous = RenderTexture.active;
for (int i = 0; i < 4; i++)
{
Texture2D targetTex = textureA;
EditorHelper.TextureChannels channel = channelA;
if (i == 1)
{
targetTex = textureB; channel = channelB;
}
if (i == 2)
{
targetTex = textureC; channel = channelC;
}
if (i == 3)
{
targetTex = textureD; channel = channelD;
}
if (targetTex == null)
{
targetTex = emptyTex;
}
int srcWidth = targetTex.width;
int srcHeight = targetTex.height;
RenderTexture tmp = RenderTexture.GetTemporary(
srcWidth,
srcHeight,
0,
RenderTextureFormat.Default,
RenderTextureReadWrite.Linear);
Graphics.Blit(targetTex, tmp);
RenderTexture.active = tmp;
Texture2D readableTex = new Texture2D(srcWidth, srcHeight);
readableTex.ReadPixels(new Rect(0, 0, tmp.width, tmp.height), 0, 0);
readableTex.Apply();
Color[] channelColors = readableTex.GetPixels();
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
int sx = Mathf.FloorToInt((x * 1.0f) / (width * 1.0f) * (srcWidth * 1.0f));
int sy = Mathf.FloorToInt((y * 1.0f) / (height * 1.0f) * (srcHeight * 1.0f));
float chVal = 0;
if (channel == EditorHelper.TextureChannels.Red)
{
chVal += channelColors[sy * srcWidth + sx].r;
}
if (channel == EditorHelper.TextureChannels.Green)
{
chVal += channelColors[sy * srcWidth + sx].g;
}
if (channel == EditorHelper.TextureChannels.Blue)
{
chVal += channelColors[sy * srcWidth + sx].b;
}
if (channel == EditorHelper.TextureChannels.Alpha)
{
chVal += channelColors[sy * srcWidth + sx].a;
}
if (channel == EditorHelper.TextureChannels.RGB || channel == EditorHelper.TextureChannels.Gray)
{
chVal += (channelColors[sy * srcWidth + sx].r + channelColors[sy * srcWidth + sx].g + channelColors[sy * srcWidth + sx].b) / 3f;
}
if (channel == EditorHelper.TextureChannels.RGBA)
{
chVal += (channelColors[sy * srcWidth + sx].r + channelColors[sy * srcWidth + sx].g + channelColors[sy * srcWidth + sx].b + channelColors[sy * srcWidth + sx].a) / 4f;
}
if (i == 0)
{
outputColors[y * width + x].r = chVal;
}
if (i == 1)
{
outputColors[y * width + x].g = chVal;
}
if (i == 2)
{
outputColors[y * width + x].b = chVal;
}
if (i == 3)
{
outputColors[y * width + x].a = chVal;
}
}
}
RenderTexture.active = previous;
RenderTexture.ReleaseTemporary(tmp);
}
generatedTexture.SetPixels(outputColors);
SaveTexture(generatedTexture, file);
Texture2D t = (Texture2D)AssetDatabase.LoadAssetAtPath(file, typeof(Texture2D));
targetMat.SetTexture(MatTex, t);
}
