diff options
Diffstat (limited to 'indra/llrender/lltexture.h')
| -rw-r--r-- | indra/llrender/lltexture.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/indra/llrender/lltexture.h b/indra/llrender/lltexture.h new file mode 100644 index 0000000000..569a65c2e0 --- /dev/null +++ b/indra/llrender/lltexture.h @@ -0,0 +1,73 @@ +/** + * @file lltexture.h + * @brief LLTexture definition + * + * This class acts as a wrapper for OpenGL calls. + * The goal of this class is to minimize the number of api calls due to legacy rendering + * code, to define an interface for a multiple rendering API abstraction of the UI + * rendering, and to abstract out direct rendering calls in a way that is cleaner and easier to maintain. + * + * $LicenseInfo:firstyear=2001&license=viewerlgpl$ + * Second Life Viewer Source Code + * Copyright (C) 2010, Linden Research, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License only. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA + * $/LicenseInfo$ + */ + +#ifndef LL_TEXTURE_H +#define LL_TEXTURE_H + +#include "llrefcount.h" +class LLImageGL ; +class LLTexUnit ; +class LLFontGL ; + +// +//this is an abstract class as the parent for the class LLViewerTexture +//through the following virtual functions, the class LLViewerTexture can be reached from /llrender. +// +class LLTexture : public LLRefCount +{ + friend class LLTexUnit ; + friend class LLFontGL ; + +protected: + virtual ~LLTexture(); + +public: + LLTexture(){} + + // + //interfaces to access LLViewerTexture + // + virtual S8 getType() const = 0 ; + virtual void setKnownDrawSize(S32 width, S32 height) = 0 ; + virtual bool bindDefaultImage(const S32 stage = 0) = 0 ; + virtual void forceImmediateUpdate() = 0 ; + virtual void setActive() = 0 ; + virtual S32 getWidth(S32 discard_level = -1) const = 0 ; + virtual S32 getHeight(S32 discard_level = -1) const = 0 ; + +private: + //note: do not make this function public. + virtual LLImageGL* getGLTexture() const = 0 ; + + virtual void updateBindStatsForTester() = 0 ; +}; +#endif + |