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authorAndrei Karas <akaras@inbox.ru>2010-10-12 19:59:25 +0300
committerAndrei Karas <akaras@inbox.ru>2010-10-16 20:44:37 +0300
commit0d3d7c908ef6d294b14f55f09c9d83767fbc5f32 (patch)
tree35a175491e6d08cdbd79ab6c9de7e13560132236 /src/resources/image.h
parentbdf409c9c4ce083881133879947cc0a6c2cce0f1 (diff)
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Implement opacity cache for SDL surfaces.
Enabled by default. Can be disabled in configuration option "alphaCache" if set it to 0. Reviewed-by: Bertram
Diffstat (limited to 'src/resources/image.h')
-rw-r--r--src/resources/image.h25
1 files changed, 22 insertions, 3 deletions
diff --git a/src/resources/image.h b/src/resources/image.h
index 3e8ad551..815b7764 100644
--- a/src/resources/image.h
+++ b/src/resources/image.h
@@ -39,6 +39,8 @@
#include <SDL_opengl.h>
#endif
+#include <map>
+
class Dye;
class Position;
@@ -169,6 +171,15 @@ class Image : public Resource
Uint8 *SDLgetAlphaChannel() const
{ return mAlphaChannel; }
+ SDL_Surface* duplicateSurface(SDL_Surface* tmpImage);
+
+ void cleanCache();
+
+ void terminateAlphaCache();
+
+ static void setEnableAlphaCache(bool n)
+ { mEnableAlphaCache = n; }
+
#ifdef USE_OPENGL
// OpenGL only public functions
@@ -208,14 +219,22 @@ class Image : public Resource
/** SDL_Surface to SDL_Surface Image loader */
static Image *_SDLload(SDL_Surface *tmpImage);
+ SDL_Surface *getByAlpha(float alpha);
+
SDL_Surface *mSDLSurface;
/** Alpha Channel pointer used for 32bit based SDL surfaces */
Uint8 *mAlphaChannel;
- // -----------------------
- // OpenGL protected members
- // -----------------------
+ std::map<float, SDL_Surface*> mAlphaCache;
+
+ bool mUseAlphaCache;
+
+ static bool mEnableAlphaCache;
+
+ // -----------------------
+ // OpenGL protected members
+ // -----------------------
#ifdef USE_OPENGL
/**
* OpenGL Constructor.