pref: remove global texture cache

src/kiwano/2d/GifSprite.cpp

@@ -54,13 +54,13 @@ GifSprite::GifSprite(GifImagePtr gif)
 
 bool GifSprite::Load(const String& file_path)
 {
-    GifImagePtr image = TextureCache::GetInstance().PreloadGif(file_path);
+    GifImagePtr image = new GifImage(file_path);
     return Load(image);
 }
 
 bool GifSprite::Load(const Resource& res)
 {
-    GifImagePtr image = TextureCache::GetInstance().PreloadGif(res);
+    GifImagePtr image = new GifImage(res);
     return Load(image);
 }
 

src/kiwano/2d/SpriteFrame.cpp

@@ -61,7 +61,7 @@ SpriteFrame::SpriteFrame(TexturePtr texture, const Rect& crop_rect)
 
 bool SpriteFrame::Load(const String& file_path)
 {
-    TexturePtr texture = TextureCache::GetInstance().Preload(file_path);
+    TexturePtr texture = new Texture(file_path);
     if (texture->IsValid())
     {
         SetTexture(texture);
@@ -72,7 +72,7 @@ bool SpriteFrame::Load(const String& file_path)
 
 bool SpriteFrame::Load(const Resource& res)
 {
-    TexturePtr texture = TextureCache::GetInstance().Preload(res);
+    TexturePtr texture = new Texture(res);
     if (texture->IsValid())
     {
         SetTexture(texture);

src/kiwano/render/Renderer.cpp

@@ -19,7 +19,6 @@
 // THE SOFTWARE.
 
 #include <kiwano/render/Renderer.h>
-#include <kiwano/render/TextureCache.h>
 #include <kiwano/event/WindowEvent.h>
 
 namespace kiwano
@@ -49,7 +48,6 @@ void Renderer::ResetResolutionWhenWindowResized(bool enabled)
 
 void Renderer::Destroy()
 {
-    TextureCache::GetInstance().Clear();
     FontCache::GetInstance().Clear();
 }
 

src/kiwano/render/TextureCache.h

@@ -21,7 +21,6 @@
 #pragma once
 #include <kiwano/render/GifImage.h>
 #include <kiwano/render/Texture.h>
-#include <kiwano/core/Singleton.h>
 
 namespace kiwano
 {
@@ -34,10 +33,8 @@ namespace kiwano
  * \~chinese
  * @brief 纹理缓存
  */
-class KGE_API TextureCache final : public Singleton<TextureCache>
+class KGE_API TextureCache final
 {
-    friend Singleton<TextureCache>;
-
 public:
     /// \~chinese
     /// @brief 预加载本地图片