/** * @file llimagegl.h * @brief Object for managing images and their textures * * $LicenseInfo:firstyear=2001&license=viewergpl$ * * Copyright (c) 2001-2007, 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://secondlife.com/developers/opensource/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://secondlife.com/developers/opensource/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 "llmemory.h" //============================================================================ class LLImageGL : public LLRefCount { public: // Size calculation static S32 dataFormatBits(S32 dataformat); static S32 dataFormatBytes(S32 dataformat, S32 width, S32 height); static S32 dataFormatComponents(S32 dataformat); // Wrapper for glBindTexture that keeps LLImageGL in sync. // Usually you want stage = 0 and bind_target = GL_TEXTURE_2D static void bindExternalTexture( LLGLuint gl_name, S32 stage, LLGLenum bind_target); static void unbindTexture(S32 stage, LLGLenum target); static void unbindTexture(S32 stage); // Uses GL_TEXTURE_2D (not a default arg to avoid gl.h dependency) // 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(); BOOL bindTextureInternal(const S32 stage = 0) const; public: virtual void dump(); // debugging info to llinfos virtual BOOL bind(const S32 stage = 0) const; void setSize(S32 width, S32 height, S32 ncomponents); 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 setClamp(BOOL clamps, BOOL clampt); void setMipFilterNearest(BOOL nearest, BOOL min_nearest = FALSE); void setExplicitFormat(LLGLint internal_format, LLGLenum primary_format, LLGLenum type_format = 0, BOOL swap_bytes = FALSE); void dontDiscard() { mDontDiscard = 1; } S32 getDiscardLevel() const { return mCurrentDiscardLevel; } S32 getMaxDiscardLevel() const { return mMaxDiscardLevel; } 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 getClampS() const { return mClampS; } BOOL getClampT() const { return mClampT; } BOOL getMipFilterNearest() const { return mMipFilterNearest; } BOOL getHasGLTexture() const { return mTexName != 0; } LLGLuint getTexName() const { return mTexName; } BOOL getIsResident(BOOL test_now = FALSE); // not const void setTarget(const LLGLenum target, const LLGLenum bind_target); BOOL getUseMipMaps() const { return mUseMipMaps; } void setUseMipMaps(BOOL usemips) { mUseMipMaps = usemips; } BOOL getUseDiscard() const { return mUseMipMaps && !mDontDiscard; } BOOL getDontDiscard() const { return mDontDiscard; } 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 S8 mUseMipMaps; S8 mHasMipMaps; S8 mHasExplicitFormat; // If false (default), GL format is f(mComponents) S8 mAutoGenMips; protected: LLGLenum mTarget; // Normally GL_TEXTURE2D, sometimes something else (ex. cube maps) LLGLenum mBindTarget; // NOrmally GL_TEXTURE2D, sometimes something else (ex. cube maps) LLGLuint mTexName; LLGLboolean mIsResident; U16 mWidth; U16 mHeight; S8 mComponents; S8 mMaxDiscardLevel; S8 mCurrentDiscardLevel; S8 mDontDiscard; // Keep full res version of this image (for UI, etc) S8 mClampS; // Need to save clamp state S8 mClampT; S8 mMipFilterNearest; // if TRUE, set magfilter to GL_NEAREST LLGLint mFormatInternal; // = GL internalformat LLGLenum mFormatPrimary; // = GL format (pixel data format) LLGLenum mFormatType; BOOL mFormatSwapBytes;// if true, use glPixelStorei(GL_UNPACK_SWAP_BYTES, 1) // 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 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