(fix/texture): Desaturate state lost on SetTexture

Fixes #93
Also normalize SetDesaturated calls to use booleans instead of numeric flags.

(cherry picked from commit 47dce3a9d5ba23c170f002b323a11ed2a5c5e206)

WeakAuras/BaseRegions/Texture.lua

@@ -99,18 +99,35 @@ local funcs = {
   end
 }
 
+local function setDesaturated(self, desaturated, ...)
+  self.isDesaturated = desaturated and 1 or 0
+  return self._SetDesaturated(self, desaturated, ...)
+end
+
+local function setTexture(self, ...)
+  local apply = self._SetTexture(self, ...)
+  if self.isDesaturated ~= nil then
+    self._SetDesaturated(self, self.isDesaturated == 1)
+  end
+  return apply
+end
+
 function Private.TextureBase.create(frame)
-    local base = {}
+  local base = {}
 
-    for funcName, func in pairs(funcs) do
-      base[funcName] = func
-    end
+  for funcName, func in pairs(funcs) do
+    base[funcName] = func
+  end
 
-    local texture = frame:CreateTexture()
+  local texture = frame:CreateTexture()
+  texture._SetDesaturated = texture.SetDesaturated
+  texture._SetTexture     = texture.SetTexture
+  texture.SetDesaturated = setDesaturated
+  texture.SetTexture     = setTexture
 
-    base.texture = texture
+  base.texture = texture
 
-    return base
+  return base
 end
 
 function Private.TextureBase.modify(base, options)

WeakAuras/RegionTypes/AuraBar.lua

@@ -1140,7 +1140,7 @@ end
 local function setTexture(self, ...)
   local apply = self._SetTexture(self, ...)
   if self.isDesaturated ~= nil then
-    self:_SetDesaturated(self.isDesaturated)
+    self:_SetDesaturated(self.isDesaturated == 1)
   end
   return apply
 end

WeakAuras/RegionTypes/Icon.lua

@@ -199,7 +199,7 @@ end
 local function setTexture(self, ...)
   local apply = self._SetTexture(self, ...)
   if self.isDesaturated ~= nil then
-    self:_SetDesaturated(self.isDesaturated)
+    self:_SetDesaturated(self.isDesaturated == 1)
   end
   return apply
 end

WeakAuras/RegionTypes/Texture.lua

@@ -11,6 +11,7 @@ local default = {
   height = 200,
   color = {1, 1, 1, 1},
   blendMode = "BLEND",
+  textureWrapMode = "CLAMPTOBLACKADDITIVE",
   rotation = 0,
   mirror = false,
   rotate = false,