/** * @file llimagegl.cpp * @brief Generic GL image handler * * $LicenseInfo:firstyear=2001&license=viewerlgpl$ * 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 * $/LicenseInfo$ */ // TODO: create 2 classes for images w/ and w/o discard levels? #include "linden_common.h" #include "llimagegl.h" #include "llerror.h" #include "llfasttimer.h" #include "llimage.h" #include "llmath.h" #include "llgl.h" #include "llglslshader.h" #include "llrender.h" //---------------------------------------------------------------------------- const F32 MIN_TEXTURE_LIFETIME = 10.f; //which power of 2 is i? //assumes i is a power of 2 > 0 U32 wpo2(U32 i); //statics U32 LLImageGL::sUniqueCount = 0; U32 LLImageGL::sBindCount = 0; S32Bytes LLImageGL::sGlobalTextureMemory(0); S32Bytes LLImageGL::sBoundTextureMemory(0); S32Bytes LLImageGL::sCurBoundTextureMemory(0); S32 LLImageGL::sCount = 0; BOOL LLImageGL::sGlobalUseAnisotropic = FALSE; F32 LLImageGL::sLastFrameTime = 0.f; BOOL LLImageGL::sAllowReadBackRaw = FALSE ; LLImageGL* LLImageGL::sDefaultGLTexture = NULL ; bool LLImageGL::sCompressTextures = false; std::set LLImageGL::sImageList; //**************************************************************************************************** //The below for texture auditing use only //**************************************************************************************************** //----------------------- //debug use S32 LLImageGL::sCurTexSizeBar = -1 ; S32 LLImageGL::sCurTexPickSize = -1 ; S32 LLImageGL::sMaxCategories = 1 ; //optimization for when we don't need to calculate mIsMask BOOL LLImageGL::sSkipAnalyzeAlpha; //------------------------ //**************************************************************************************************** //End for texture auditing use only //**************************************************************************************************** //************************************************************************************** //below are functions for debug use //do not delete them even though they are not currently being used. void check_all_images() { for (std::set::iterator iter = LLImageGL::sImageList.begin(); iter != LLImageGL::sImageList.end(); iter++) { LLImageGL* glimage = *iter; if (glimage->getTexName() && glimage->isGLTextureCreated()) { gGL.getTexUnit(0)->bind(glimage) ; glimage->checkTexSize() ; gGL.getTexUnit(0)->unbind(glimage->getTarget()) ; } } } void LLImageGL::checkTexSize(bool forced) const { if ((forced || gDebugGL) && mTarget == GL_TEXTURE_2D) { { //check viewport GLint vp[4] ; glGetIntegerv(GL_VIEWPORT, vp) ; llcallstacks << "viewport: " << vp[0] << " : " << vp[1] << " : " << vp[2] << " : " << vp[3] << llcallstacksendl ; } GLint texname; glGetIntegerv(GL_TEXTURE_BINDING_2D, &texname); BOOL error = FALSE; if (texname != mTexName) { LL_INFOS() << "Bound: " << texname << " Should bind: " << mTexName << " Default: " << LLImageGL::sDefaultGLTexture->getTexName() << LL_ENDL; error = TRUE; if (gDebugSession) { gFailLog << "Invalid texture bound!" << std::endl; } else { LL_ERRS() << "Invalid texture bound!" << LL_ENDL; } } stop_glerror() ; LLGLint x = 0, y = 0 ; glGetTexLevelParameteriv(mTarget, 0, GL_TEXTURE_WIDTH, (GLint*)&x); glGetTexLevelParameteriv(mTarget, 0, GL_TEXTURE_HEIGHT, (GLint*)&y) ; stop_glerror() ; llcallstacks << "w: " << x << " h: " << y << llcallstacksendl ; if(!x || !y) { return ; } if(x != (mWidth >> mCurrentDiscardLevel) || y != (mHeight >> mCurrentDiscardLevel)) { error = TRUE; if (gDebugSession) { gFailLog << "wrong texture size and discard level!" << mWidth << " Height: " << mHeight << " Current Level: " << (S32)mCurrentDiscardLevel << std::endl; } else { LL_ERRS() << "wrong texture size and discard level: width: " << mWidth << " Height: " << mHeight << " Current Level: " << (S32)mCurrentDiscardLevel << LL_ENDL ; } } if (error) { ll_fail("LLImageGL::checkTexSize failed."); } } } //end of debug functions //************************************************************************************** //---------------------------------------------------------------------------- BOOL is_little_endian() { S32 a = 0x12345678; U8 *c = (U8*)(&a); return (*c == 0x78) ; } //static void LLImageGL::initClass(S32 num_catagories, BOOL skip_analyze_alpha /* = false */) { sSkipAnalyzeAlpha = skip_analyze_alpha; } //static void LLImageGL::cleanupClass() { } //static S32 LLImageGL::dataFormatBits(S32 dataformat) { switch (dataformat) { case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: return 4; case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: return 8; case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: return 8; case GL_LUMINANCE: return 8; case GL_ALPHA: return 8; case GL_COLOR_INDEX: return 8; case GL_LUMINANCE_ALPHA: return 16; case GL_RGB: return 24; case GL_RGB8: return 24; case GL_RGBA: return 32; case GL_BGRA: return 32; // Used for QuickTime media textures on the Mac default: LL_ERRS() << "LLImageGL::Unknown format: " << dataformat << LL_ENDL; return 0; } } //static S32 LLImageGL::dataFormatBytes(S32 dataformat, S32 width, S32 height) { if (dataformat >= GL_COMPRESSED_RGB_S3TC_DXT1_EXT && dataformat <= GL_COMPRESSED_RGBA_S3TC_DXT5_EXT) { if (width < 4) width = 4; if (height < 4) height = 4; } S32 bytes ((width*height*dataFormatBits(dataformat)+7)>>3); S32 aligned = (bytes+3)&~3; return aligned; } //static S32 LLImageGL::dataFormatComponents(S32 dataformat) { switch (dataformat) { case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: return 3; case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: return 4; case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: return 4; case GL_LUMINANCE: return 1; case GL_ALPHA: return 1; case GL_COLOR_INDEX: return 1; case GL_LUMINANCE_ALPHA: return 2; case GL_RGB: return 3; case GL_RGBA: return 4; case GL_BGRA: return 4; // Used for QuickTime media textures on the Mac default: LL_ERRS() << "LLImageGL::Unknown format: " << dataformat << LL_ENDL; return 0; } } //---------------------------------------------------------------------------- static LLTrace::BlockTimerStatHandle FTM_IMAGE_UPDATE_STATS("Image Stats"); // static void LLImageGL::updateStats(F32 current_time) { LL_RECORD_BLOCK_TIME(FTM_IMAGE_UPDATE_STATS); sLastFrameTime = current_time; sBoundTextureMemory = sCurBoundTextureMemory; sCurBoundTextureMemory = S32Bytes(0); } //static S32 LLImageGL::updateBoundTexMem(const S32Bytes mem, const S32 ncomponents, S32 category) { LLImageGL::sCurBoundTextureMemory += mem ; return LLImageGL::sCurBoundTextureMemory.value(); } //---------------------------------------------------------------------------- //static void LLImageGL::destroyGL(BOOL save_state) { for (S32 stage = 0; stage < gGLManager.mNumTextureUnits; stage++) { gGL.getTexUnit(stage)->unbind(LLTexUnit::TT_TEXTURE); } sAllowReadBackRaw = true ; for (std::set::iterator iter = sImageList.begin(); iter != sImageList.end(); iter++) { LLImageGL* glimage = *iter; if (glimage->mTexName) { if (save_state && glimage->isGLTextureCreated() && glimage->mComponents) { glimage->mSaveData = new LLImageRaw; glimage->claimMem(glimage->mSaveData); if(!glimage->readBackRaw(glimage->mCurrentDiscardLevel, glimage->mSaveData, false)) //necessary, keep it. { glimage->disclaimMem(glimage->mSaveData); glimage->mSaveData = NULL ; } } glimage->destroyGLTexture(); stop_glerror(); } } sAllowReadBackRaw = false ; } //static void LLImageGL::restoreGL() { for (std::set::iterator iter = sImageList.begin(); iter != sImageList.end(); iter++) { LLImageGL* glimage = *iter; if(glimage->getTexName()) { LL_ERRS() << "tex name is not 0." << LL_ENDL ; } if (glimage->mSaveData.notNull()) { if (glimage->getComponents() && glimage->mSaveData->getComponents()) { glimage->createGLTexture(glimage->mCurrentDiscardLevel, glimage->mSaveData, 0, TRUE, glimage->getCategory()); stop_glerror(); } glimage->mSaveData = NULL; // deletes data } } } //static void LLImageGL::dirtyTexOptions() { for (std::set::iterator iter = sImageList.begin(); iter != sImageList.end(); iter++) { LLImageGL* glimage = *iter; glimage->mTexOptionsDirty = true; stop_glerror(); } } //---------------------------------------------------------------------------- //for server side use only. //static BOOL LLImageGL::create(LLPointer& dest, BOOL usemipmaps) { dest = new LLImageGL(usemipmaps); return TRUE; } //for server side use only. BOOL LLImageGL::create(LLPointer& dest, U32 width, U32 height, U8 components, BOOL usemipmaps) { dest = new LLImageGL(width, height, components, usemipmaps); return TRUE; } //for server side use only. BOOL LLImageGL::create(LLPointer& dest, const LLImageRaw* imageraw, BOOL usemipmaps) { dest = new LLImageGL(imageraw, usemipmaps); return TRUE; } //---------------------------------------------------------------------------- LLImageGL::LLImageGL(BOOL usemipmaps) : LLTrace::MemTrackable("LLImageGL"), mSaveData(0) { init(usemipmaps); setSize(0, 0, 0); sImageList.insert(this); sCount++; } LLImageGL::LLImageGL(U32 width, U32 height, U8 components, BOOL usemipmaps) : LLTrace::MemTrackable("LLImageGL"), mSaveData(0) { llassert( components <= 4 ); init(usemipmaps); setSize(width, height, components); sImageList.insert(this); sCount++; } LLImageGL::LLImageGL(const LLImageRaw* imageraw, BOOL usemipmaps) : LLTrace::MemTrackable("LLImageGL"), mSaveData(0) { init(usemipmaps); setSize(0, 0, 0); sImageList.insert(this); sCount++; createGLTexture(0, imageraw); } LLImageGL::~LLImageGL() { LLImageGL::cleanup(); sImageList.erase(this); freePickMask(); sCount--; } void LLImageGL::init(BOOL usemipmaps) { // keep these members in the same order as declared in llimagehl.h // so that it is obvious by visual inspection if we forgot to // init a field. mTextureMemory = (S32Bytes)0; mLastBindTime = 0.f; mPickMask = NULL; mPickMaskWidth = 0; mPickMaskHeight = 0; mUseMipMaps = usemipmaps; mHasExplicitFormat = FALSE; mAutoGenMips = FALSE; mIsMask = FALSE; mNeedsAlphaAndPickMask = TRUE ; mAlphaStride = 0 ; mAlphaOffset = 0 ; mGLTextureCreated = FALSE ; mTexName = 0; mWidth = 0; mHeight = 0; mCurrentDiscardLevel = -1; mDiscardLevelInAtlas = -1 ; mTexelsInAtlas = 0 ; mTexelsInGLTexture = 0 ; mAllowCompression = true; mTarget = GL_TEXTURE_2D; mBindTarget = LLTexUnit::TT_TEXTURE; mHasMipMaps = false; mMipLevels = -1; mIsResident = 0; mComponents = 0; mMaxDiscardLevel = MAX_DISCARD_LEVEL; mTexOptionsDirty = true; mAddressMode = LLTexUnit::TAM_WRAP; mFilterOption = LLTexUnit::TFO_ANISOTROPIC; mFormatInternal = -1; mFormatPrimary = (LLGLenum) 0; mFormatType = GL_UNSIGNED_BYTE; mFormatSwapBytes = FALSE; #ifdef DEBUG_MISS mMissed = FALSE; #endif mCategory = -1; } void LLImageGL::cleanup() { if (!gGLManager.mIsDisabled) { destroyGLTexture(); } freePickMask(); mSaveData = NULL; // deletes data } //---------------------------------------------------------------------------- //this function is used to check the size of a texture image. //so dim should be a positive number static bool check_power_of_two(S32 dim) { if(dim < 0) { return false ; } if(!dim)//0 is a power-of-two number { return true ; } return !(dim & (dim - 1)) ; } //static bool LLImageGL::checkSize(S32 width, S32 height) { return check_power_of_two(width) && check_power_of_two(height); } bool LLImageGL::setSize(S32 width, S32 height, S32 ncomponents, S32 discard_level) { if (width != mWidth || height != mHeight || ncomponents != mComponents) { // Check if dimensions are a power of two! if (!checkSize(width,height)) { LL_WARNS() << llformat("Texture has non power of two dimension: %dx%d",width,height) << LL_ENDL; return false; } if (mTexName) { // LL_WARNS() << "Setting Size of LLImageGL with existing mTexName = " << mTexName << LL_ENDL; destroyGLTexture(); } // pickmask validity depends on old image size, delete it freePickMask(); mWidth = width; mHeight = height; mComponents = ncomponents; if (ncomponents > 0) { mMaxDiscardLevel = 0; while (width > 1 && height > 1 && mMaxDiscardLevel < MAX_DISCARD_LEVEL) { mMaxDiscardLevel++; width >>= 1; height >>= 1; } if(discard_level > 0) { mMaxDiscardLevel = llmax(mMaxDiscardLevel, (S8)discard_level); } } else { mMaxDiscardLevel = MAX_DISCARD_LEVEL; } } return true; } //---------------------------------------------------------------------------- // virtual void LLImageGL::dump() { LL_INFOS() << "mMaxDiscardLevel " << S32(mMaxDiscardLevel) << " mLastBindTime " << mLastBindTime << " mTarget " << S32(mTarget) << " mBindTarget " << S32(mBindTarget) << " mUseMipMaps " << S32(mUseMipMaps) << " mHasMipMaps " << S32(mHasMipMaps) << " mCurrentDiscardLevel " << S32(mCurrentDiscardLevel) << " mFormatInternal " << S32(mFormatInternal) << " mFormatPrimary " << S32(mFormatPrimary) << " mFormatType " << S32(mFormatType) << " mFormatSwapBytes " << S32(mFormatSwapBytes) << " mHasExplicitFormat " << S32(mHasExplicitFormat) #if DEBUG_MISS << " mMissed " << mMissed #endif << LL_ENDL; LL_INFOS() << " mTextureMemory " << mTextureMemory << " mTexNames " << mTexName << " mIsResident " << S32(mIsResident) << LL_ENDL; } //---------------------------------------------------------------------------- void LLImageGL::forceUpdateBindStats(void) const { mLastBindTime = sLastFrameTime; } BOOL LLImageGL::updateBindStats(S32Bytes tex_mem) const { if (mTexName != 0) { #ifdef DEBUG_MISS mMissed = ! getIsResident(TRUE); #endif sBindCount++; if (mLastBindTime != sLastFrameTime) { // we haven't accounted for this texture yet this frame sUniqueCount++; updateBoundTexMem(tex_mem, mComponents, mCategory); mLastBindTime = sLastFrameTime; return TRUE ; } } return FALSE ; } F32 LLImageGL::getTimePassedSinceLastBound() { return sLastFrameTime - mLastBindTime ; } void LLImageGL::setExplicitFormat( LLGLint internal_format, LLGLenum primary_format, LLGLenum type_format, BOOL swap_bytes ) { // Note: must be called before createTexture() // Note: it's up to the caller to ensure that the format matches the number of components. mHasExplicitFormat = TRUE; mFormatInternal = internal_format; mFormatPrimary = primary_format; if(type_format == 0) mFormatType = GL_UNSIGNED_BYTE; else mFormatType = type_format; mFormatSwapBytes = swap_bytes; calcAlphaChannelOffsetAndStride() ; } //---------------------------------------------------------------------------- void LLImageGL::setImage(const LLImageRaw* imageraw) { llassert((imageraw->getWidth() == getWidth(mCurrentDiscardLevel)) && (imageraw->getHeight() == getHeight(mCurrentDiscardLevel)) && (imageraw->getComponents() == getComponents())); const U8* rawdata = imageraw->getData(); setImage(rawdata, FALSE); } static LLTrace::BlockTimerStatHandle FTM_SET_IMAGE("setImage"); void LLImageGL::setImage(const U8* data_in, BOOL data_hasmips) { LL_RECORD_BLOCK_TIME(FTM_SET_IMAGE); bool is_compressed = false; if (mFormatPrimary >= GL_COMPRESSED_RGBA_S3TC_DXT1_EXT && mFormatPrimary <= GL_COMPRESSED_RGBA_S3TC_DXT5_EXT) { is_compressed = true; } if (mUseMipMaps) { //set has mip maps to true before binding image so tex parameters get set properly gGL.getTexUnit(0)->unbind(mBindTarget); mHasMipMaps = true; mTexOptionsDirty = true; setFilteringOption(LLTexUnit::TFO_ANISOTROPIC); } else { mHasMipMaps = false; } llverify(gGL.getTexUnit(0)->bind(this)); if (mUseMipMaps) { if (data_hasmips) { // NOTE: data_in points to largest image; smaller images // are stored BEFORE the largest image for (S32 d=mCurrentDiscardLevel; d<=mMaxDiscardLevel; d++) { S32 w = getWidth(d); S32 h = getHeight(d); S32 gl_level = d-mCurrentDiscardLevel; mMipLevels = llmax(mMipLevels, gl_level); if (d > mCurrentDiscardLevel) { data_in -= dataFormatBytes(mFormatPrimary, w, h); // see above comment } if (is_compressed) { S32 tex_size = dataFormatBytes(mFormatPrimary, w, h); glCompressedTexImage2DARB(mTarget, gl_level, mFormatPrimary, w, h, 0, tex_size, (GLvoid *)data_in); stop_glerror(); } else { // LL_RECORD_BLOCK_TIME(FTM_TEMP4); if(mFormatSwapBytes) { glPixelStorei(GL_UNPACK_SWAP_BYTES, 1); stop_glerror(); } LLImageGL::setManualImage(mTarget, gl_level, mFormatInternal, w, h, mFormatPrimary, GL_UNSIGNED_BYTE, (GLvoid*)data_in, mAllowCompression); if (gl_level == 0) { analyzeAlpha(data_in, w, h); } updatePickMask(w, h, data_in); if(mFormatSwapBytes) { glPixelStorei(GL_UNPACK_SWAP_BYTES, 0); stop_glerror(); } stop_glerror(); } stop_glerror(); } } else if (!is_compressed) { if (mAutoGenMips) { stop_glerror(); { // LL_RECORD_BLOCK_TIME(FTM_TEMP4); if(mFormatSwapBytes) { glPixelStorei(GL_UNPACK_SWAP_BYTES, 1); stop_glerror(); } S32 w = getWidth(mCurrentDiscardLevel); S32 h = getHeight(mCurrentDiscardLevel); mMipLevels = wpo2(llmax(w, h)); //use legacy mipmap generation mode (note: making this condional can cause rendering issues) // -- but making it not conditional triggers deprecation warnings when core profile is enabled // (some rendering issues while core profile is enabled are acceptable at this point in time) if (!LLRender::sGLCoreProfile) { glTexParameteri(mTarget, GL_GENERATE_MIPMAP, GL_TRUE); } LLImageGL::setManualImage(mTarget, 0, mFormatInternal, w, h, mFormatPrimary, mFormatType, data_in, mAllowCompression); analyzeAlpha(data_in, w, h); stop_glerror(); updatePickMask(w, h, data_in); if(mFormatSwapBytes) { glPixelStorei(GL_UNPACK_SWAP_BYTES, 0); stop_glerror(); } if (LLRender::sGLCoreProfile) { glGenerateMipmap(mTarget); } stop_glerror(); } } else { // Create mips by hand // ~4x faster than gluBuild2DMipmaps S32 width = getWidth(mCurrentDiscardLevel); S32 height = getHeight(mCurrentDiscardLevel); S32 nummips = mMaxDiscardLevel - mCurrentDiscardLevel + 1; S32 w = width, h = height; const U8* new_data = 0; (void)new_data; const U8* prev_mip_data = 0; const U8* cur_mip_data = 0; #ifdef SHOW_ASSERT S32 cur_mip_size = 0; #endif mMipLevels = nummips; for (int m=0; m 0 && h > 0 && cur_mip_data); (void)cur_mip_data; { // LL_RECORD_BLOCK_TIME(FTM_TEMP4); if(mFormatSwapBytes) { glPixelStorei(GL_UNPACK_SWAP_BYTES, 1); stop_glerror(); } LLImageGL::setManualImage(mTarget, m, mFormatInternal, w, h, mFormatPrimary, mFormatType, cur_mip_data, mAllowCompression); if (m == 0) { analyzeAlpha(data_in, w, h); } stop_glerror(); if (m == 0) { updatePickMask(w, h, cur_mip_data); } if(mFormatSwapBytes) { glPixelStorei(GL_UNPACK_SWAP_BYTES, 0); stop_glerror(); } } if (prev_mip_data && prev_mip_data != data_in) { delete[] prev_mip_data; } prev_mip_data = cur_mip_data; w >>= 1; h >>= 1; } if (prev_mip_data && prev_mip_data != data_in) { delete[] prev_mip_data; prev_mip_data = NULL; } } } else { LL_ERRS() << "Compressed Image has mipmaps but data does not (can not auto generate compressed mips)" << LL_ENDL; } } else { mMipLevels = 0; S32 w = getWidth(); S32 h = getHeight(); if (is_compressed) { S32 tex_size = dataFormatBytes(mFormatPrimary, w, h); glCompressedTexImage2DARB(mTarget, 0, mFormatPrimary, w, h, 0, tex_size, (GLvoid *)data_in); stop_glerror(); } else { if(mFormatSwapBytes) { glPixelStorei(GL_UNPACK_SWAP_BYTES, 1); stop_glerror(); } LLImageGL::setManualImage(mTarget, 0, mFormatInternal, w, h, mFormatPrimary, mFormatType, (GLvoid *)data_in, mAllowCompression); analyzeAlpha(data_in, w, h); updatePickMask(w, h, data_in); stop_glerror(); if(mFormatSwapBytes) { glPixelStorei(GL_UNPACK_SWAP_BYTES, 0); stop_glerror(); } } } stop_glerror(); mGLTextureCreated = true; } BOOL LLImageGL::preAddToAtlas(S32 discard_level, const LLImageRaw* raw_image) { //not compatible with core GL profile llassert(!LLRender::sGLCoreProfile); if (gGLManager.mIsDisabled) { LL_WARNS() << "Trying to create a texture while GL is disabled!" << LL_ENDL; return FALSE; } llassert(gGLManager.mInited); stop_glerror(); if (discard_level < 0) { llassert(mCurrentDiscardLevel >= 0); discard_level = mCurrentDiscardLevel; } // Actual image width/height = raw image width/height * 2^discard_level S32 w = raw_image->getWidth() << discard_level; S32 h = raw_image->getHeight() << discard_level; // setSize may call destroyGLTexture if the size does not match if (!setSize(w, h, raw_image->getComponents(), discard_level)) { LL_WARNS() << "Trying to create a texture with incorrect dimensions!" << LL_ENDL; return FALSE; } if( !mHasExplicitFormat ) { switch (mComponents) { case 1: // Use luminance alpha (for fonts) mFormatInternal = GL_LUMINANCE8; mFormatPrimary = GL_LUMINANCE; mFormatType = GL_UNSIGNED_BYTE; break; case 2: // Use luminance alpha (for fonts) mFormatInternal = GL_LUMINANCE8_ALPHA8; mFormatPrimary = GL_LUMINANCE_ALPHA; mFormatType = GL_UNSIGNED_BYTE; break; case 3: mFormatInternal = GL_RGB8; mFormatPrimary = GL_RGB; mFormatType = GL_UNSIGNED_BYTE; break; case 4: mFormatInternal = GL_RGBA8; mFormatPrimary = GL_RGBA; mFormatType = GL_UNSIGNED_BYTE; break; default: LL_ERRS() << "Bad number of components for texture: " << (U32)getComponents() << LL_ENDL; } } mCurrentDiscardLevel = discard_level; mDiscardLevelInAtlas = discard_level; mTexelsInAtlas = raw_image->getWidth() * raw_image->getHeight() ; mLastBindTime = sLastFrameTime; mGLTextureCreated = false ; glPixelStorei(GL_UNPACK_ROW_LENGTH, raw_image->getWidth()); stop_glerror(); if(mFormatSwapBytes) { glPixelStorei(GL_UNPACK_SWAP_BYTES, 1); stop_glerror(); } return TRUE ; } void LLImageGL::postAddToAtlas() { if(mFormatSwapBytes) { glPixelStorei(GL_UNPACK_SWAP_BYTES, 0); stop_glerror(); } glPixelStorei(GL_UNPACK_ROW_LENGTH, 0); gGL.getTexUnit(0)->setTextureFilteringOption(mFilterOption); stop_glerror(); } BOOL LLImageGL::setSubImage(const U8* datap, S32 data_width, S32 data_height, S32 x_pos, S32 y_pos, S32 width, S32 height, BOOL force_fast_update) { if (!width || !height) { return TRUE; } if (mTexName == 0) { // *TODO: Re-enable warning? Ran into thread locking issues? DK 2011-02-18 //LL_WARNS() << "Setting subimage on image without GL texture" << LL_ENDL; return FALSE; } if (datap == NULL) { // *TODO: Re-enable warning? Ran into thread locking issues? DK 2011-02-18 //LL_WARNS() << "Setting subimage on image with NULL datap" << LL_ENDL; return FALSE; } // HACK: allow the caller to explicitly force the fast path (i.e. using glTexSubImage2D here instead of calling setImage) even when updating the full texture. if (!force_fast_update && x_pos == 0 && y_pos == 0 && width == getWidth() && height == getHeight() && data_width == width && data_height == height) { setImage(datap, FALSE); } else { if (mUseMipMaps) { dump(); LL_ERRS() << "setSubImage called with mipmapped image (not supported)" << LL_ENDL; } llassert_always(mCurrentDiscardLevel == 0); llassert_always(x_pos >= 0 && y_pos >= 0); if (((x_pos + width) > getWidth()) || (y_pos + height) > getHeight()) { dump(); LL_ERRS() << "Subimage not wholly in target image!" << " x_pos " << x_pos << " y_pos " << y_pos << " width " << width << " height " << height << " getWidth() " << getWidth() << " getHeight() " << getHeight() << LL_ENDL; } if ((x_pos + width) > data_width || (y_pos + height) > data_height) { dump(); LL_ERRS() << "Subimage not wholly in source image!" << " x_pos " << x_pos << " y_pos " << y_pos << " width " << width << " height " << height << " source_width " << data_width << " source_height " << data_height << LL_ENDL; } glPixelStorei(GL_UNPACK_ROW_LENGTH, data_width); stop_glerror(); if(mFormatSwapBytes) { glPixelStorei(GL_UNPACK_SWAP_BYTES, 1); stop_glerror(); } datap += (y_pos * data_width + x_pos) * getComponents(); // Update the GL texture BOOL res = gGL.getTexUnit(0)->bindManual(mBindTarget, mTexName); if (!res) LL_ERRS() << "LLImageGL::setSubImage(): bindTexture failed" << LL_ENDL; stop_glerror(); glTexSubImage2D(mTarget, 0, x_pos, y_pos, width, height, mFormatPrimary, mFormatType, datap); gGL.getTexUnit(0)->disable(); stop_glerror(); if(mFormatSwapBytes) { glPixelStorei(GL_UNPACK_SWAP_BYTES, 0); stop_glerror(); } glPixelStorei(GL_UNPACK_ROW_LENGTH, 0); stop_glerror(); mGLTextureCreated = true; } return TRUE; } BOOL LLImageGL::setSubImage(const LLImageRaw* imageraw, S32 x_pos, S32 y_pos, S32 width, S32 height, BOOL force_fast_update) { return setSubImage(imageraw->getData(), imageraw->getWidth(), imageraw->getHeight(), x_pos, y_pos, width, height, force_fast_update); } // Copy sub image from frame buffer BOOL LLImageGL::setSubImageFromFrameBuffer(S32 fb_x, S32 fb_y, S32 x_pos, S32 y_pos, S32 width, S32 height) { if (gGL.getTexUnit(0)->bind(this, false, true)) { glCopyTexSubImage2D(GL_TEXTURE_2D, 0, fb_x, fb_y, x_pos, y_pos, width, height); mGLTextureCreated = true; stop_glerror(); return TRUE; } else { return FALSE; } } // static static LLTrace::BlockTimerStatHandle FTM_GENERATE_TEXTURES("generate textures"); void LLImageGL::generateTextures(S32 numTextures, U32 *textures) { LL_RECORD_BLOCK_TIME(FTM_GENERATE_TEXTURES); glGenTextures(numTextures, textures); } // static void LLImageGL::deleteTextures(S32 numTextures, U32 *textures) { if (gGLManager.mInited) { glDeleteTextures(numTextures, textures); } } // static static LLTrace::BlockTimerStatHandle FTM_SET_MANUAL_IMAGE("setManualImage"); void LLImageGL::setManualImage(U32 target, S32 miplevel, S32 intformat, S32 width, S32 height, U32 pixformat, U32 pixtype, const void *pixels, bool allow_compression) { LL_RECORD_BLOCK_TIME(FTM_SET_MANUAL_IMAGE); bool use_scratch = false; U32* scratch = NULL; if (LLRender::sGLCoreProfile) { if (pixformat == GL_ALPHA && pixtype == GL_UNSIGNED_BYTE) { //GL_ALPHA is deprecated, convert to RGBA use_scratch = true; scratch = new U32[width*height]; U32 pixel_count = (U32) (width*height); for (U32 i = 0; i < pixel_count; i++) { U8* pix = (U8*) &scratch[i]; pix[0] = pix[1] = pix[2] = 0; pix[3] = ((U8*) pixels)[i]; } pixformat = GL_RGBA; intformat = GL_RGBA8; } if (pixformat == GL_LUMINANCE_ALPHA && pixtype == GL_UNSIGNED_BYTE) { //GL_LUMINANCE_ALPHA is deprecated, convert to RGBA use_scratch = true; scratch = new U32[width*height]; U32 pixel_count = (U32) (width*height); for (U32 i = 0; i < pixel_count; i++) { U8 lum = ((U8*) pixels)[i*2+0]; U8 alpha = ((U8*) pixels)[i*2+1]; U8* pix = (U8*) &scratch[i]; pix[0] = pix[1] = pix[2] = lum; pix[3] = alpha; } pixformat = GL_RGBA; intformat = GL_RGBA8; } if (pixformat == GL_LUMINANCE && pixtype == GL_UNSIGNED_BYTE) { //GL_LUMINANCE_ALPHA is deprecated, convert to RGB use_scratch = true; scratch = new U32[width*height]; U32 pixel_count = (U32) (width*height); for (U32 i = 0; i < pixel_count; i++) { U8 lum = ((U8*) pixels)[i]; U8* pix = (U8*) &scratch[i]; pix[0] = pix[1] = pix[2] = lum; pix[3] = 255; } pixformat = GL_RGBA; intformat = GL_RGB8; } } if (LLImageGL::sCompressTextures && allow_compression) { switch (intformat) { case GL_RGB: case GL_RGB8: intformat = GL_COMPRESSED_RGB; break; case GL_RGBA: case GL_RGBA8: intformat = GL_COMPRESSED_RGBA; break; case GL_LUMINANCE: case GL_LUMINANCE8: intformat = GL_COMPRESSED_LUMINANCE; break; case GL_LUMINANCE_ALPHA: case GL_LUMINANCE8_ALPHA8: intformat = GL_COMPRESSED_LUMINANCE_ALPHA; break; case GL_ALPHA: case GL_ALPHA8: intformat = GL_COMPRESSED_ALPHA; break; default: LL_WARNS() << "Could not compress format: " << std::hex << intformat << LL_ENDL; break; } } stop_glerror(); glTexImage2D(target, miplevel, intformat, width, height, 0, pixformat, pixtype, use_scratch ? scratch : pixels); stop_glerror(); if (use_scratch) { delete [] scratch; } } //create an empty GL texture: just create a texture name //the texture is assiciate with some image by calling glTexImage outside LLImageGL static LLTrace::BlockTimerStatHandle FTM_CREATE_GL_TEXTURE1("createGLTexture()"); BOOL LLImageGL::createGLTexture() { LL_RECORD_BLOCK_TIME(FTM_CREATE_GL_TEXTURE1); if (gGLManager.mIsDisabled) { LL_WARNS() << "Trying to create a texture while GL is disabled!" << LL_ENDL; return FALSE; } mGLTextureCreated = false ; //do not save this texture when gl is destroyed. llassert(gGLManager.mInited); stop_glerror(); if(mTexName) { LLImageGL::deleteTextures(1, (reinterpret_cast(&mTexName))) ; } LLImageGL::generateTextures(1, &mTexName); stop_glerror(); if (!mTexName) { LL_ERRS() << "LLImageGL::createGLTexture failed to make an empty texture" << LL_ENDL; } return TRUE ; } static LLTrace::BlockTimerStatHandle FTM_CREATE_GL_TEXTURE2("createGLTexture(raw)"); BOOL LLImageGL::createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S32 usename/*=0*/, BOOL to_create, S32 category) { LL_RECORD_BLOCK_TIME(FTM_CREATE_GL_TEXTURE2); if (gGLManager.mIsDisabled) { LL_WARNS() << "Trying to create a texture while GL is disabled!" << LL_ENDL; return FALSE; } mGLTextureCreated = false ; llassert(gGLManager.mInited); stop_glerror(); if (discard_level < 0) { llassert(mCurrentDiscardLevel >= 0); discard_level = mCurrentDiscardLevel; } // Actual image width/height = raw image width/height * 2^discard_level S32 raw_w = imageraw->getWidth() ; S32 raw_h = imageraw->getHeight() ; S32 w = raw_w << discard_level; S32 h = raw_h << discard_level; // setSize may call destroyGLTexture if the size does not match if (!setSize(w, h, imageraw->getComponents(), discard_level)) { LL_WARNS() << "Trying to create a texture with incorrect dimensions!" << LL_ENDL; return FALSE; } if( !mHasExplicitFormat ) { switch (mComponents) { case 1: // Use luminance alpha (for fonts) mFormatInternal = GL_LUMINANCE8; mFormatPrimary = GL_LUMINANCE; mFormatType = GL_UNSIGNED_BYTE; break; case 2: // Use luminance alpha (for fonts) mFormatInternal = GL_LUMINANCE8_ALPHA8; mFormatPrimary = GL_LUMINANCE_ALPHA; mFormatType = GL_UNSIGNED_BYTE; break; case 3: mFormatInternal = GL_RGB8; mFormatPrimary = GL_RGB; mFormatType = GL_UNSIGNED_BYTE; break; case 4: mFormatInternal = GL_RGBA8; mFormatPrimary = GL_RGBA; mFormatType = GL_UNSIGNED_BYTE; break; default: LL_ERRS() << "Bad number of components for texture: " << (U32)getComponents() << LL_ENDL; } calcAlphaChannelOffsetAndStride() ; } if(!to_create) //not create a gl texture { destroyGLTexture(); mCurrentDiscardLevel = discard_level; mLastBindTime = sLastFrameTime; return TRUE ; } setCategory(category); const U8* rawdata = imageraw->getData(); return createGLTexture(discard_level, rawdata, FALSE, usename); } static LLTrace::BlockTimerStatHandle FTM_CREATE_GL_TEXTURE3("createGLTexture3(data)"); BOOL LLImageGL::createGLTexture(S32 discard_level, const U8* data_in, BOOL data_hasmips, S32 usename) { LL_RECORD_BLOCK_TIME(FTM_CREATE_GL_TEXTURE3); llassert(data_in); stop_glerror(); if (discard_level < 0) { llassert(mCurrentDiscardLevel >= 0); discard_level = mCurrentDiscardLevel; } discard_level = llclamp(discard_level, 0, (S32)mMaxDiscardLevel); if (mTexName != 0 && discard_level == mCurrentDiscardLevel) { // This will only be true if the size has not changed setImage(data_in, data_hasmips); return TRUE; } U32 old_name = mTexName; // S32 old_discard = mCurrentDiscardLevel; if (usename != 0) { mTexName = usename; } else { LLImageGL::generateTextures(1, &mTexName); stop_glerror(); { llverify(gGL.getTexUnit(0)->bind(this)); stop_glerror(); glTexParameteri(LLTexUnit::getInternalType(mBindTarget), GL_TEXTURE_BASE_LEVEL, 0); stop_glerror(); glTexParameteri(LLTexUnit::getInternalType(mBindTarget), GL_TEXTURE_MAX_LEVEL, mMaxDiscardLevel-discard_level); stop_glerror(); } } if (!mTexName) { LL_ERRS() << "LLImageGL::createGLTexture failed to make texture" << LL_ENDL; } if (mUseMipMaps) { mAutoGenMips = gGLManager.mHasMipMapGeneration; #if LL_DARWIN // On the Mac GF2 and GF4MX drivers, auto mipmap generation doesn't work right with alpha-only textures. if(gGLManager.mIsGF2or4MX && (mFormatInternal == GL_ALPHA8) && (mFormatPrimary == GL_ALPHA)) { mAutoGenMips = FALSE; } #endif } mCurrentDiscardLevel = discard_level; setImage(data_in, data_hasmips); // Set texture options to our defaults. gGL.getTexUnit(0)->setHasMipMaps(mHasMipMaps); gGL.getTexUnit(0)->setTextureAddressMode(mAddressMode); gGL.getTexUnit(0)->setTextureFilteringOption(mFilterOption); // things will break if we don't unbind after creation gGL.getTexUnit(0)->unbind(mBindTarget); stop_glerror(); if (old_name != 0) { sGlobalTextureMemory -= mTextureMemory; LLImageGL::deleteTextures(1, &old_name); stop_glerror(); } disclaimMem(mTextureMemory); mTextureMemory = (S32Bytes)getMipBytes(discard_level); claimMem(mTextureMemory); sGlobalTextureMemory += mTextureMemory; mTexelsInGLTexture = getWidth() * getHeight() ; // mark this as bound at this point, so we don't throw it out immediately mLastBindTime = sLastFrameTime; return TRUE; } BOOL LLImageGL::readBackRaw(S32 discard_level, LLImageRaw* imageraw, bool compressed_ok) const { llassert_always(sAllowReadBackRaw) ; //LL_ERRS() << "should not call this function!" << LL_ENDL ; if (discard_level < 0) { discard_level = mCurrentDiscardLevel; } if (mTexName == 0 || discard_level < mCurrentDiscardLevel || discard_level > mMaxDiscardLevel ) { return FALSE; } S32 gl_discard = discard_level - mCurrentDiscardLevel; //explicitly unbind texture gGL.getTexUnit(0)->unbind(mBindTarget); llverify(gGL.getTexUnit(0)->bindManual(mBindTarget, mTexName)); //debug code, leave it there commented. //checkTexSize() ; LLGLint glwidth = 0; glGetTexLevelParameteriv(mTarget, gl_discard, GL_TEXTURE_WIDTH, (GLint*)&glwidth); if (glwidth == 0) { // No mip data smaller than current discard level return FALSE; } S32 width = getWidth(discard_level); S32 height = getHeight(discard_level); S32 ncomponents = getComponents(); if (ncomponents == 0) { return FALSE; } if(width < glwidth) { LL_WARNS() << "texture size is smaller than it should be." << LL_ENDL ; LL_WARNS() << "width: " << width << " glwidth: " << glwidth << " mWidth: " << mWidth << " mCurrentDiscardLevel: " << (S32)mCurrentDiscardLevel << " discard_level: " << (S32)discard_level << LL_ENDL ; return FALSE ; } if (width <= 0 || width > 2048 || height <= 0 || height > 2048 || ncomponents < 1 || ncomponents > 4) { LL_ERRS() << llformat("LLImageGL::readBackRaw: bogus params: %d x %d x %d",width,height,ncomponents) << LL_ENDL; } LLGLint is_compressed = 0; if (compressed_ok) { glGetTexLevelParameteriv(mTarget, is_compressed, GL_TEXTURE_COMPRESSED, (GLint*)&is_compressed); } //----------------------------------------------------------------------------------------------- GLenum error ; while((error = glGetError()) != GL_NO_ERROR) { LL_WARNS() << "GL Error happens before reading back texture. Error code: " << error << LL_ENDL ; } //----------------------------------------------------------------------------------------------- if (is_compressed) { LLGLint glbytes; glGetTexLevelParameteriv(mTarget, gl_discard, GL_TEXTURE_COMPRESSED_IMAGE_SIZE, (GLint*)&glbytes); if(!imageraw->allocateDataSize(width, height, ncomponents, glbytes)) { LL_WARNS() << "Memory allocation failed for reading back texture. Size is: " << glbytes << LL_ENDL ; LL_WARNS() << "width: " << width << "height: " << height << "components: " << ncomponents << LL_ENDL ; return FALSE ; } glGetCompressedTexImageARB(mTarget, gl_discard, (GLvoid*)(imageraw->getData())); //stop_glerror(); } else { if(!imageraw->allocateDataSize(width, height, ncomponents)) { LL_WARNS() << "Memory allocation failed for reading back texture." << LL_ENDL ; LL_WARNS() << "width: " << width << "height: " << height << "components: " << ncomponents << LL_ENDL ; return FALSE ; } glGetTexImage(GL_TEXTURE_2D, gl_discard, mFormatPrimary, mFormatType, (GLvoid*)(imageraw->getData())); //stop_glerror(); } //----------------------------------------------------------------------------------------------- if((error = glGetError()) != GL_NO_ERROR) { LL_WARNS() << "GL Error happens after reading back texture. Error code: " << error << LL_ENDL ; imageraw->deleteData() ; while((error = glGetError()) != GL_NO_ERROR) { LL_WARNS() << "GL Error happens after reading back texture. Error code: " << error << LL_ENDL ; } return FALSE ; } //----------------------------------------------------------------------------------------------- return TRUE ; } void LLImageGL::deleteDeadTextures() { bool reset = false; if (reset) { gGL.getTexUnit(0)->activate(); } } void LLImageGL::destroyGLTexture() { if (mTexName != 0) { if(mTextureMemory != S32Bytes(0)) { sGlobalTextureMemory -= mTextureMemory; disclaimMem(mTextureMemory); mTextureMemory = (S32Bytes)0; } LLImageGL::deleteTextures(1, &mTexName); mCurrentDiscardLevel = -1 ; //invalidate mCurrentDiscardLevel. mTexName = 0; mGLTextureCreated = FALSE ; } } //force to invalidate the gl texture, most likely a sculpty texture void LLImageGL::forceToInvalidateGLTexture() { if (mTexName != 0) { destroyGLTexture(); } else { mCurrentDiscardLevel = -1 ; //invalidate mCurrentDiscardLevel. } } //---------------------------------------------------------------------------- void LLImageGL::setAddressMode(LLTexUnit::eTextureAddressMode mode) { if (mAddressMode != mode) { mTexOptionsDirty = true; mAddressMode = mode; } if (gGL.getTexUnit(gGL.getCurrentTexUnitIndex())->getCurrTexture() == mTexName) { gGL.getTexUnit(gGL.getCurrentTexUnitIndex())->setTextureAddressMode(mode); mTexOptionsDirty = false; } } void LLImageGL::setFilteringOption(LLTexUnit::eTextureFilterOptions option) { if (mFilterOption != option) { mTexOptionsDirty = true; mFilterOption = option; } if (mTexName != 0 && gGL.getTexUnit(gGL.getCurrentTexUnitIndex())->getCurrTexture() == mTexName) { gGL.getTexUnit(gGL.getCurrentTexUnitIndex())->setTextureFilteringOption(option); mTexOptionsDirty = false; stop_glerror(); } } BOOL LLImageGL::getIsResident(BOOL test_now) { if (test_now) { if (mTexName != 0) { glAreTexturesResident(1, (GLuint*)&mTexName, &mIsResident); } else { mIsResident = FALSE; } } return mIsResident; } S32 LLImageGL::getHeight(S32 discard_level) const { if (discard_level < 0) { discard_level = mCurrentDiscardLevel; } S32 height = mHeight >> discard_level; if (height < 1) height = 1; return height; } S32 LLImageGL::getWidth(S32 discard_level) const { if (discard_level < 0) { discard_level = mCurrentDiscardLevel; } S32 width = mWidth >> discard_level; if (width < 1) width = 1; return width; } S32 LLImageGL::getBytes(S32 discard_level) const { if (discard_level < 0) { discard_level = mCurrentDiscardLevel; } S32 w = mWidth>>discard_level; S32 h = mHeight>>discard_level; if (w == 0) w = 1; if (h == 0) h = 1; return dataFormatBytes(mFormatPrimary, w, h); } S32 LLImageGL::getMipBytes(S32 discard_level) const { if (discard_level < 0) { discard_level = mCurrentDiscardLevel; } S32 w = mWidth>>discard_level; S32 h = mHeight>>discard_level; S32 res = dataFormatBytes(mFormatPrimary, w, h); if (mUseMipMaps) { while (w > 1 && h > 1) { w >>= 1; if (w == 0) w = 1; h >>= 1; if (h == 0) h = 1; res += dataFormatBytes(mFormatPrimary, w, h); } } return res; } BOOL LLImageGL::isJustBound() const { return (BOOL)(sLastFrameTime - mLastBindTime < 0.5f); } BOOL LLImageGL::getBoundRecently() const { return (BOOL)(sLastFrameTime - mLastBindTime < MIN_TEXTURE_LIFETIME); } BOOL LLImageGL::getIsAlphaMask() const { llassert_always(!sSkipAnalyzeAlpha); return mIsMask; } void LLImageGL::setTarget(const LLGLenum target, const LLTexUnit::eTextureType bind_target) { mTarget = target; mBindTarget = bind_target; } const S8 INVALID_OFFSET = -99 ; void LLImageGL::setNeedsAlphaAndPickMask(BOOL need_mask) { if(mNeedsAlphaAndPickMask != need_mask) { mNeedsAlphaAndPickMask = need_mask; if(mNeedsAlphaAndPickMask) { mAlphaOffset = 0 ; } else //do not need alpha mask { mAlphaOffset = INVALID_OFFSET ; mIsMask = FALSE; } } } void LLImageGL::calcAlphaChannelOffsetAndStride() { if(mAlphaOffset == INVALID_OFFSET)//do not need alpha mask { return ; } mAlphaStride = -1 ; switch (mFormatPrimary) { case GL_LUMINANCE: case GL_ALPHA: mAlphaStride = 1; break; case GL_LUMINANCE_ALPHA: mAlphaStride = 2; break; case GL_RGB: mNeedsAlphaAndPickMask = FALSE ; mIsMask = FALSE; return ; //no alpha channel. case GL_RGBA: mAlphaStride = 4; break; case GL_BGRA_EXT: mAlphaStride = 4; break; default: break; } mAlphaOffset = -1 ; if (mFormatType == GL_UNSIGNED_BYTE) { mAlphaOffset = mAlphaStride - 1 ; } else if(is_little_endian()) { if (mFormatType == GL_UNSIGNED_INT_8_8_8_8) { mAlphaOffset = 0 ; } else if (mFormatType == GL_UNSIGNED_INT_8_8_8_8_REV) { mAlphaOffset = 3 ; } } else //big endian { if (mFormatType == GL_UNSIGNED_INT_8_8_8_8) { mAlphaOffset = 3 ; } else if (mFormatType == GL_UNSIGNED_INT_8_8_8_8_REV) { mAlphaOffset = 0 ; } } if( mAlphaStride < 1 || //unsupported format mAlphaOffset < 0 || //unsupported type (mFormatPrimary == GL_BGRA_EXT && mFormatType != GL_UNSIGNED_BYTE)) //unknown situation { LL_WARNS() << "Cannot analyze alpha for image with format type " << std::hex << mFormatType << std::dec << LL_ENDL; mNeedsAlphaAndPickMask = FALSE ; mIsMask = FALSE; } } void LLImageGL::analyzeAlpha(const void* data_in, U32 w, U32 h) { if(sSkipAnalyzeAlpha || !mNeedsAlphaAndPickMask) { return ; } U32 length = w * h; U32 alphatotal = 0; U32 sample[16]; memset(sample, 0, sizeof(U32)*16); // generate histogram of quantized alpha. // also add-in the histogram of a 2x2 box-sampled version. The idea is // this will mid-skew the data (and thus increase the chances of not // being used as a mask) from high-frequency alpha maps which // suffer the worst from aliasing when used as alpha masks. if (w >= 2 && h >= 2) { llassert(w%2 == 0); llassert(h%2 == 0); const GLubyte* rowstart = ((const GLubyte*) data_in) + mAlphaOffset; for (U32 y = 0; y < h; y+=2) { const GLubyte* current = rowstart; for (U32 x = 0; x < w; x+=2) { const U32 s1 = current[0]; alphatotal += s1; const U32 s2 = current[w * mAlphaStride]; alphatotal += s2; current += mAlphaStride; const U32 s3 = current[0]; alphatotal += s3; const U32 s4 = current[w * mAlphaStride]; alphatotal += s4; current += mAlphaStride; ++sample[s1/16]; ++sample[s2/16]; ++sample[s3/16]; ++sample[s4/16]; const U32 asum = (s1+s2+s3+s4); alphatotal += asum; sample[asum/(16*4)] += 4; } rowstart += 2 * w * mAlphaStride; } length *= 2; // we sampled everything twice, essentially } else { const GLubyte* current = ((const GLubyte*) data_in) + mAlphaOffset; for (U32 i = 0; i < length; i++) { const U32 s1 = *current; alphatotal += s1; ++sample[s1/16]; current += mAlphaStride; } } // if more than 1/16th of alpha samples are mid-range, this // shouldn't be treated as a 1-bit mask // also, if all of the alpha samples are clumped on one half // of the range (but not at an absolute extreme), then consider // this to be an intentional effect and don't treat as a mask. U32 midrangetotal = 0; for (U32 i = 2; i < 13; i++) { midrangetotal += sample[i]; } U32 lowerhalftotal = 0; for (U32 i = 0; i < 8; i++) { lowerhalftotal += sample[i]; } U32 upperhalftotal = 0; for (U32 i = 8; i < 16; i++) { upperhalftotal += sample[i]; } if (midrangetotal > length/48 || // lots of midrange, or (lowerhalftotal == length && alphatotal != 0) || // all close to transparent but not all totally transparent, or (upperhalftotal == length && alphatotal != 255*length)) // all close to opaque but not all totally opaque { mIsMask = FALSE; // not suitable for masking } else { mIsMask = TRUE; } } //---------------------------------------------------------------------------- U32 LLImageGL::createPickMask(S32 pWidth, S32 pHeight) { U32 pick_width = pWidth/2 + 1; U32 pick_height = pHeight/2 + 1; U32 size = pick_width * pick_height; size = (size + 7) / 8; // pixelcount-to-bits mPickMask = new U8[size]; claimMem(size); mPickMaskWidth = pick_width - 1; mPickMaskHeight = pick_height - 1; memset(mPickMask, 0, sizeof(U8) * size); return size; } //---------------------------------------------------------------------------- void LLImageGL::freePickMask() { // pickmask validity depends on old image size, delete it if (mPickMask != NULL) { disclaimMem((mPickMaskWidth * mPickMaskHeight + 7) / 8); delete [] mPickMask; } mPickMask = NULL; mPickMaskWidth = mPickMaskHeight = 0; } //---------------------------------------------------------------------------- void LLImageGL::updatePickMask(S32 width, S32 height, const U8* data_in) { if(!mNeedsAlphaAndPickMask) { return ; } freePickMask(); if (mFormatType != GL_UNSIGNED_BYTE || mFormatPrimary != GL_RGBA) { //cannot generate a pick mask for this texture return; } #ifdef SHOW_ASSERT const U32 pickSize = createPickMask(width, height); #else // SHOW_ASSERT createPickMask(width, height); #endif // SHOW_ASSERT U32 pick_bit = 0; for (S32 y = 0; y < height; y += 2) { for (S32 x = 0; x < width; x += 2) { U8 alpha = data_in[(y*width+x)*4+3]; if (alpha > 32) { U32 pick_idx = pick_bit/8; U32 pick_offset = pick_bit%8; llassert(pick_idx < pickSize); mPickMask[pick_idx] |= 1 << pick_offset; } ++pick_bit; } } } BOOL LLImageGL::getMask(const LLVector2 &tc) { BOOL res = TRUE; if (mPickMask) { F32 u,v; if (LL_LIKELY(tc.isFinite())) { u = tc.mV[0] - floorf(tc.mV[0]); v = tc.mV[1] - floorf(tc.mV[1]); } else { LL_WARNS_ONCE("render") << "Ugh, non-finite u/v in mask pick" << LL_ENDL; u = v = 0.f; // removing assert per EXT-4388 // llassert(false); } if (LL_UNLIKELY(u < 0.f || u > 1.f || v < 0.f || v > 1.f)) { LL_WARNS_ONCE("render") << "Ugh, u/v out of range in image mask pick" << LL_ENDL; u = v = 0.f; // removing assert per EXT-4388 // llassert(false); } S32 x = llfloor(u * mPickMaskWidth); S32 y = llfloor(v * mPickMaskHeight); if (LL_UNLIKELY(x > mPickMaskWidth)) { LL_WARNS_ONCE("render") << "Ooh, width overrun on pick mask read, that coulda been bad." << LL_ENDL; x = llmax((U16)0, mPickMaskWidth); } if (LL_UNLIKELY(y > mPickMaskHeight)) { LL_WARNS_ONCE("render") << "Ooh, height overrun on pick mask read, that woulda been bad." << LL_ENDL; y = llmax((U16)0, mPickMaskHeight); } S32 idx = y*mPickMaskWidth+x; S32 offset = idx%8; res = mPickMask[idx/8] & (1 << offset) ? TRUE : FALSE; } return res; } void LLImageGL::setCurTexSizebar(S32 index, BOOL set_pick_size) { sCurTexSizeBar = index ; if(set_pick_size) { sCurTexPickSize = (1 << index) ; } else { sCurTexPickSize = -1 ; } } void LLImageGL::resetCurTexSizebar() { sCurTexSizeBar = -1 ; sCurTexPickSize = -1 ; } //---------------------------------------------------------------------------- //---------------------------------------------------------------------------- // Manual Mip Generation /* S32 width = getWidth(discard_level); S32 height = getHeight(discard_level); S32 w = width, h = height; S32 nummips = 1; while (w > 4 && h > 4) { w >>= 1; h >>= 1; nummips++; } stop_glerror(); w = width, h = height; const U8* prev_mip_data = 0; const U8* cur_mip_data = 0; for (int m=0; m 0 && h > 0 && cur_mip_data); U8 test = cur_mip_data[w*h*mComponents-1]; { LLImageGL::setManualImage(mTarget, m, mFormatInternal, w, h, mFormatPrimary, mFormatType, cur_mip_data); stop_glerror(); } if (prev_mip_data && prev_mip_data != rawdata) { delete prev_mip_data; } prev_mip_data = cur_mip_data; w >>= 1; h >>= 1; } if (prev_mip_data && prev_mip_data != rawdata) { delete prev_mip_data; } glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, nummips); */