Improve fringe map layers drawing.

Pre cache next tile position with image.

2 files changed, 35 insertions, 0 deletions

diff --git a/src/resources/image/image.cpp b/src/resources/image/image.cpp
index 379a1c074..a3bb1b0ce 100644
--- a/src/resources/image/image.cpp
+++ b/src/resources/image/image.cpp
@@ -45,6 +45,36 @@
 
 #include "debug.h"
 
+#ifdef UNITTESTS
+Image::Image(const int width,
+             const int height) :
+    Resource(),
+#ifdef USE_OPENGL
+    mGLImage(0),
+    mTexWidth(0),
+    mTexHeight(0),
+#endif  // USE_OPENGL
+    mBounds(),
+    mAlpha(1.0F),
+    mSDLSurface(nullptr),
+#ifdef USE_SDL2
+    mTexture(nullptr),
+#endif  // USE_SDL2
+    mAlphaChannel(nullptr),
+    mAlphaCache(),
+    mLoaded(false),
+    mHasAlphaChannel(false),
+    mUseAlphaCache(false),
+    mIsAlphaVisible(true),
+    mIsAlphaCalculated(false)
+{
+    mBounds.x = 0;
+    mBounds.y = 0;
+    mBounds.w = width;
+    mBounds.h = height;
+}
+#endif  // UNITTESTS
+
 #ifdef USE_SDL2
 Image::Image(SDL_Texture *restrict const image,
              const int width, const int height) :
diff --git a/src/resources/image/image.h b/src/resources/image/image.h
index ca5a8a12e..0a6060fef 100644
--- a/src/resources/image/image.h
+++ b/src/resources/image/image.h
@@ -81,6 +81,11 @@ class Image notfinal : public Resource
 #endif  // USE_OPENGL
 
     public:
+#ifdef UNITTESTS
+        Image(const int width,
+              const int height);
+#endif  // UNITTESTS
+
         A_DELETE_COPY(Image)
 
         /**