/** * @file llimagegl.h * @brief Object for managing images and their textures * * $LicenseInfo:firstyear=2001&license=viewergpl$ * * Copyright (c) 2001-2009, Linden Research, Inc. * * Second Life Viewer Source Code * The source code in this file ("Source Code") is provided by Linden Lab * to you under the terms of the GNU General Public License, version 2.0 * ("GPL"), unless you have obtained a separate licensing agreement * ("Other License"), formally executed by you and Linden Lab. Terms of * the GPL can be found in doc/GPL-license.txt in this distribution, or * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2 * * There are special exceptions to the terms and conditions of the GPL as * it is applied to this Source Code. View the full text of the exception * in the file doc/FLOSS-exception.txt in this software distribution, or * online at * http://secondlifegrid.net/programs/open_source/licensing/flossexception * * By copying, modifying or distributing this software, you acknowledge * that you have read and understood your obligations described above, * and agree to abide by those obligations. * * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY, * COMPLETENESS OR PERFORMANCE. * $/LicenseInfo$ */ #ifndef LL_LLIMAGEGL_H #define LL_LLIMAGEGL_H #include "llimage.h" #include "llgltypes.h" #include "llpointer.h" #include "llrefcount.h" #include "v2math.h" #include "llrender.h" //============================================================================ class LLImageGL : public LLRefCount { friend class LLTexUnit; public: // Size calculation static S32 dataFormatBits(S32 dataformat); static S32 dataFormatBytes(S32 dataformat, S32 width, S32 height); static S32 dataFormatComponents(S32 dataformat); void updateBindStats(void) const; // needs to be called every frame static void updateStats(F32 current_time); // Save off / restore GL textures static void destroyGL(BOOL save_state = TRUE); static void restoreGL(); // Sometimes called externally for textures not using LLImageGL (should go away...) static S32 updateBoundTexMem(const S32 delta); static bool checkSize(S32 width, S32 height); // Not currently necessary for LLImageGL, but required in some derived classes, // so include for compatability static BOOL create(LLPointer& dest, BOOL usemipmaps = TRUE); static BOOL create(LLPointer& dest, U32 width, U32 height, U8 components, BOOL usemipmaps = TRUE); static BOOL create(LLPointer& dest, const LLImageRaw* imageraw, BOOL usemipmaps = TRUE); public: LLImageGL(BOOL usemipmaps = TRUE); LLImageGL(U32 width, U32 height, U8 components, BOOL usemipmaps = TRUE); LLImageGL(const LLImageRaw* imageraw, BOOL usemipmaps = TRUE); protected: virtual ~LLImageGL(); void analyzeAlpha(const void* data_in, S32 w, S32 h); public: virtual void dump(); // debugging info to llinfos virtual bool bindError(const S32 stage = 0) const; virtual bool bindDefaultImage(const S32 stage = 0) const; virtual void forceImmediateUpdate() ; void setSize(S32 width, S32 height, S32 ncomponents); // These 3 functions currently wrap glGenTextures(), glDeleteTextures(), and glTexImage2D() // for tracking purposes and will be deprecated in the future static void generateTextures(S32 numTextures, U32 *textures); static void deleteTextures(S32 numTextures, U32 *textures); static void setManualImage(U32 target, S32 miplevel, S32 intformat, S32 width, S32 height, U32 pixformat, U32 pixtype, const void *pixels); BOOL createGLTexture() ; BOOL createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S32 usename = 0); BOOL createGLTexture(S32 discard_level, const U8* data, BOOL data_hasmips = FALSE, S32 usename = 0); void setImage(const LLImageRaw* imageraw); void setImage(const U8* data_in, BOOL data_hasmips = FALSE); BOOL setSubImage(const LLImageRaw* imageraw, S32 x_pos, S32 y_pos, S32 width, S32 height); BOOL setSubImage(const U8* datap, S32 data_width, S32 data_height, S32 x_pos, S32 y_pos, S32 width, S32 height); BOOL setSubImageFromFrameBuffer(S32 fb_x, S32 fb_y, S32 x_pos, S32 y_pos, S32 width, S32 height); BOOL setDiscardLevel(S32 discard_level); // Read back a raw image for this discard level, if it exists BOOL readBackRaw(S32 discard_level, LLImageRaw* imageraw, bool compressed_ok); void destroyGLTexture(); void setExplicitFormat(LLGLint internal_format, LLGLenum primary_format, LLGLenum type_format = 0, BOOL swap_bytes = FALSE); void dontDiscard() { mDontDiscard = 1; mTextureState = NO_DELETE; } S32 getDiscardLevel() const { return mCurrentDiscardLevel; } S32 getMaxDiscardLevel() const { return mMaxDiscardLevel; } S32 getCurrentWidth() const { return mWidth ;} S32 getCurrentHeight() const { return mHeight ;} S32 getWidth(S32 discard_level = -1) const; S32 getHeight(S32 discard_level = -1) const; U8 getComponents() const { return mComponents; } S32 getBytes(S32 discard_level = -1) const; S32 getMipBytes(S32 discard_level = -1) const; BOOL getBoundRecently() const; LLGLenum getPrimaryFormat() const { return mFormatPrimary; } BOOL getHasGLTexture() const { return mTexName != 0; } LLGLuint getTexName() const { return mTexName; } BOOL getIsAlphaMask() const { return mIsMask; } BOOL getIsResident(BOOL test_now = FALSE); // not const void setTarget(const LLGLenum target, const LLTexUnit::eTextureType bind_target); LLTexUnit::eTextureType getTarget(void) const { return mBindTarget; } bool isGLTextureCreated(void) const { return mGLTextureCreated ; } void setGLTextureCreated (bool initialized) { mGLTextureCreated = initialized; } BOOL getUseMipMaps() const { return mUseMipMaps; } void setUseMipMaps(BOOL usemips) { mUseMipMaps = usemips; } BOOL getUseDiscard() const { return mUseMipMaps && !mDontDiscard; } BOOL getDontDiscard() const { return mDontDiscard; } BOOL isValidForSculpt(S32 discard_level, S32 image_width, S32 image_height, S32 ncomponents) ; void updatePickMask(S32 width, S32 height, const U8* data_in); BOOL getMask(const LLVector2 &tc); void checkTexSize() const ; // Sets the addressing mode used to sample the texture // (such as wrapping, mirrored wrapping, and clamp) // Note: this actually gets set the next time the texture is bound. void setAddressMode(LLTexUnit::eTextureAddressMode mode); LLTexUnit::eTextureAddressMode getAddressMode(void) const { return mAddressMode; } // Sets the filtering options used to sample the texture // (such as point sampling, bilinear interpolation, mipmapping, and anisotropic filtering) // Note: this actually gets set the next time the texture is bound. void setFilteringOption(LLTexUnit::eTextureFilterOptions option); LLTexUnit::eTextureFilterOptions getFilteringOption(void) const { return mFilterOption; } BOOL isDeleted() ; BOOL isInactive() ; BOOL isDeletionCandidate(); void setDeletionCandidate() ; void setInactive() ; void setActive() ; void forceActive() ; void setNoDelete() ; protected: void init(BOOL usemipmaps); virtual void cleanup(); // Clean up the LLImageGL so it can be reinitialized. Be careful when using this in derived class destructors public: // Various GL/Rendering options S32 mTextureMemory; mutable F32 mLastBindTime; // last time this was bound, by discard level private: LLPointer mSaveData; // used for destroyGL/restoreGL U8* mPickMask; //downsampled bitmap approximation of alpha channel. NULL if no alpha channel S8 mUseMipMaps; S8 mHasExplicitFormat; // If false (default), GL format is f(mComponents) S8 mAutoGenMips; BOOL mIsMask; bool mGLTextureCreated ; LLGLuint mTexName; U16 mWidth; U16 mHeight; S8 mCurrentDiscardLevel; protected: LLGLenum mTarget; // Normally GL_TEXTURE2D, sometimes something else (ex. cube maps) LLTexUnit::eTextureType mBindTarget; // Normally TT_TEXTURE, sometimes something else (ex. cube maps) bool mHasMipMaps; LLGLboolean mIsResident; S8 mComponents; S8 mMaxDiscardLevel; S8 mDontDiscard; // Keep full res version of this image (for UI, etc) bool mTexOptionsDirty; LLTexUnit::eTextureAddressMode mAddressMode; // Defaults to TAM_WRAP LLTexUnit::eTextureFilterOptions mFilterOption; // Defaults to TFO_TRILINEAR LLGLint mFormatInternal; // = GL internalformat LLGLenum mFormatPrimary; // = GL format (pixel data format) LLGLenum mFormatType; BOOL mFormatSwapBytes;// if true, use glPixelStorei(GL_UNPACK_SWAP_BYTES, 1) protected: typedef enum { DELETED = 0, //removed from memory DELETION_CANDIDATE, //ready to be removed from memory INACTIVE, //not be used for the last certain period (i.e., 30 seconds). ACTIVE, //just being used, can become inactive if not being used for a certain time (10 seconds). NO_DELETE = 99 //stay in memory, can not be removed. } LLGLTexureState; LLGLTexureState mTextureState ; // STATICS public: static std::set sImageList; static S32 sCount; static F32 sLastFrameTime; static LLGLuint sCurrentBoundTextures[MAX_GL_TEXTURE_UNITS]; // Currently bound texture ID // Global memory statistics static S32 sGlobalTextureMemory; // Tracks main memory texmem static S32 sBoundTextureMemory; // Tracks bound texmem for last completed frame static S32 sCurBoundTextureMemory; // Tracks bound texmem for current frame static U32 sBindCount; // Tracks number of texture binds for current frame static U32 sUniqueCount; // Tracks number of unique texture binds for current frame static BOOL sGlobalUseAnisotropic; #if DEBUG_MISS BOOL mMissed; // Missed on last bind? BOOL getMissed() const { return mMissed; }; #else BOOL getMissed() const { return FALSE; }; #endif }; #endif // LL_LLIMAGEGL_H