/** * @file llface.cpp * @brief LLFace class implementation * * $LicenseInfo:firstyear=2001&license=viewergpl$ * * 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. * $/LicenseInfo$ */ #include "llviewerprecompiledheaders.h" #include "lldrawable.h" // lldrawable needs to be included before llface #include "llface.h" #include "llviewertextureanim.h" #include "llviewercontrol.h" #include "llvolume.h" #include "m3math.h" #include "v3color.h" #include "lldrawpoolbump.h" #include "llgl.h" #include "llrender.h" #include "lllightconstants.h" #include "llsky.h" #include "llviewercamera.h" #include "llviewertexturelist.h" #include "llvosky.h" #include "llvovolume.h" #include "pipeline.h" #include "llviewerregion.h" #include "llviewerwindow.h" #define LL_MAX_INDICES_COUNT 1000000 BOOL LLFace::sSafeRenderSelect = TRUE; // FALSE #define DOTVEC(a,b) (a.mV[0]*b.mV[0] + a.mV[1]*b.mV[1] + a.mV[2]*b.mV[2]) /* For each vertex, given: B - binormal T - tangent N - normal P - position The resulting texture coordinate is: u = 2(B dot P) v = 2(T dot P) */ void planarProjection(LLVector2 &tc, const LLVector3& normal, const LLVector3 &mCenter, const LLVector3& vec) { //DONE! LLVector3 binormal; float d = normal * LLVector3(1,0,0); if (d >= 0.5f || d <= -0.5f) { binormal = LLVector3(0,1,0); if (normal.mV[0] < 0) { binormal = -binormal; } } else { binormal = LLVector3(1,0,0); if (normal.mV[1] > 0) { binormal = -binormal; } } LLVector3 tangent = binormal % normal; tc.mV[1] = -((tangent*vec)*2 - 0.5f); tc.mV[0] = 1.0f+((binormal*vec)*2 - 0.5f); } void sphericalProjection(LLVector2 &tc, const LLVector3& normal, const LLVector3 &mCenter, const LLVector3& vec) { //BROKEN /*tc.mV[0] = acosf(vd.mNormal * LLVector3(1,0,0))/3.14159f; tc.mV[1] = acosf(vd.mNormal * LLVector3(0,0,1))/6.284f; if (vd.mNormal.mV[1] > 0) { tc.mV[1] = 1.0f-tc.mV[1]; }*/ } void cylindricalProjection(LLVector2 &tc, const LLVector3& normal, const LLVector3 &mCenter, const LLVector3& vec) { //BROKEN /*LLVector3 binormal; float d = vd.mNormal * LLVector3(1,0,0); if (d >= 0.5f || d <= -0.5f) { binormal = LLVector3(0,1,0); } else{ binormal = LLVector3(1,0,0); } LLVector3 tangent = binormal % vd.mNormal; tc.mV[1] = -((tangent*vec)*2 - 0.5f); tc.mV[0] = acosf(vd.mNormal * LLVector3(1,0,0))/6.284f; if (vd.mNormal.mV[1] < 0) { tc.mV[0] = 1.0f-tc.mV[0]; }*/ } //////////////////// // // LLFace implementation // void LLFace::init(LLDrawable* drawablep, LLViewerObject* objp) { mLastUpdateTime = gFrameTimeSeconds; mLastMoveTime = 0.f; mVSize = 0.f; mPixelArea = 16.f; mState = GLOBAL; mDrawPoolp = NULL; mPoolType = 0; mCenterLocal = objp->getPosition(); mCenterAgent = drawablep->getPositionAgent(); mDistance = 0.f; mGeomCount = 0; mGeomIndex = 0; mIndicesCount = 0; mIndicesIndex = 0; mIndexInTex = 0; mTexture = NULL; mTEOffset = -1; setDrawable(drawablep); mVObjp = objp; mReferenceIndex = -1; mTextureMatrix = NULL; mDrawInfo = NULL; mFaceColor = LLColor4(1,0,0,1); mLastVertexBuffer = mVertexBuffer; mLastGeomCount = mGeomCount; mLastGeomIndex = mGeomIndex; mLastIndicesCount = mIndicesCount; mLastIndicesIndex = mIndicesIndex; mImportanceToCamera = 0.f ; mBoundingSphereRadius = 0.0f ; mAtlasInfop = NULL ; mUsingAtlas = FALSE ; mHasMedia = FALSE ; } static LLFastTimer::DeclareTimer FTM_DESTROY_FACE("Destroy Face"); static LLFastTimer::DeclareTimer FTM_DESTROY_TEXTURE("Texture"); static LLFastTimer::DeclareTimer FTM_DESTROY_DRAWPOOL("Drawpool"); static LLFastTimer::DeclareTimer FTM_DESTROY_TEXTURE_MATRIX("Texture Matrix"); static LLFastTimer::DeclareTimer FTM_DESTROY_DRAW_INFO("Draw Info"); static LLFastTimer::DeclareTimer FTM_DESTROY_ATLAS("Atlas"); static LLFastTimer::DeclareTimer FTM_FACE_DEREF("Deref"); void LLFace::destroy() { LLFastTimer t(FTM_DESTROY_FACE); if(mTexture.notNull()) { LLFastTimer t(FTM_DESTROY_TEXTURE); mTexture->removeFace(this) ; } if (mDrawPoolp) { LLFastTimer t(FTM_DESTROY_DRAWPOOL); mDrawPoolp->removeFace(this); mDrawPoolp = NULL; } if (mTextureMatrix) { LLFastTimer t(FTM_DESTROY_TEXTURE_MATRIX); delete mTextureMatrix; mTextureMatrix = NULL; if (mDrawablep.notNull()) { LLSpatialGroup* group = mDrawablep->getSpatialGroup(); if (group) { group->dirtyGeom(); gPipeline.markRebuild(group, TRUE); } } } { LLFastTimer t(FTM_DESTROY_DRAW_INFO); setDrawInfo(NULL); } { LLFastTimer t(FTM_DESTROY_ATLAS); removeAtlas(); } { LLFastTimer t(FTM_FACE_DEREF); mDrawablep = NULL; mVObjp = NULL; } } // static void LLFace::initClass() { } void LLFace::setWorldMatrix(const LLMatrix4 &mat) { llerrs << "Faces on this drawable are not independently modifiable\n" << llendl; } void LLFace::setPool(LLFacePool* new_pool, LLViewerTexture *texturep) { LLMemType mt1(LLMemType::MTYPE_DRAWABLE); if (!new_pool) { llerrs << "Setting pool to null!" << llendl; } if (new_pool != mDrawPoolp) { // Remove from old pool if (mDrawPoolp) { mDrawPoolp->removeFace(this); if (mDrawablep) { gPipeline.markRebuild(mDrawablep, LLDrawable::REBUILD_ALL, TRUE); } } mGeomIndex = 0; // Add to new pool if (new_pool) { new_pool->addFace(this); } mDrawPoolp = new_pool; } setTexture(texturep) ; } void LLFace::setTexture(LLViewerTexture* tex) { if(mTexture == tex) { return ; } if(mTexture.notNull()) { mTexture->removeFace(this) ; removeAtlas() ; } if(tex) { tex->addFace(this) ; } mTexture = tex ; } void LLFace::dirtyTexture() { gPipeline.markTextured(getDrawable()); } void LLFace::switchTexture(LLViewerTexture* new_texture) { if(mTexture == new_texture) { return ; } if(!new_texture) { llerrs << "Can not switch to a null texture." << llendl; return; } new_texture->addTextureStats(mTexture->getMaxVirtualSize()) ; getViewerObject()->changeTEImage(mTEOffset, new_texture) ; setTexture(new_texture) ; dirtyTexture(); } void LLFace::setTEOffset(const S32 te_offset) { mTEOffset = te_offset; } void LLFace::setFaceColor(const LLColor4& color) { mFaceColor = color; setState(USE_FACE_COLOR); } void LLFace::unsetFaceColor() { clearState(USE_FACE_COLOR); } void LLFace::setDrawable(LLDrawable *drawable) { mDrawablep = drawable; mXform = &drawable->mXform; } void LLFace::setSize(const S32 num_vertices, const S32 num_indices) { if (mGeomCount != num_vertices || mIndicesCount != num_indices) { mGeomCount = num_vertices; mIndicesCount = num_indices; mVertexBuffer = NULL; mLastVertexBuffer = NULL; } } //============================================================================ U16 LLFace::getGeometryAvatar( LLStrider &vertices, LLStrider &normals, LLStrider &tex_coords, LLStrider &vertex_weights, LLStrider &clothing_weights) { LLMemType mt1(LLMemType::MTYPE_DRAWABLE); if (mVertexBuffer.notNull()) { mVertexBuffer->getVertexStrider (vertices, mGeomIndex); mVertexBuffer->getNormalStrider (normals, mGeomIndex); mVertexBuffer->getTexCoord0Strider (tex_coords, mGeomIndex); mVertexBuffer->getWeightStrider(vertex_weights, mGeomIndex); mVertexBuffer->getClothWeightStrider(clothing_weights, mGeomIndex); } return mGeomIndex; } U16 LLFace::getGeometry(LLStrider &vertices, LLStrider &normals, LLStrider &tex_coords, LLStrider &indicesp) { LLMemType mt1(LLMemType::MTYPE_DRAWABLE); if (mVertexBuffer.notNull()) { mVertexBuffer->getVertexStrider(vertices, mGeomIndex); if (mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_NORMAL)) { mVertexBuffer->getNormalStrider(normals, mGeomIndex); } if (mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_TEXCOORD0)) { mVertexBuffer->getTexCoord0Strider(tex_coords, mGeomIndex); } mVertexBuffer->getIndexStrider(indicesp, mIndicesIndex); } return mGeomIndex; } void LLFace::updateCenterAgent() { if (mDrawablep->isActive()) { mCenterAgent = mCenterLocal * getRenderMatrix(); } else { mCenterAgent = mCenterLocal; } } void LLFace::renderForSelect(U32 data_mask) { if(mDrawablep.isNull() || mVertexBuffer.isNull()) { return; } LLSpatialGroup* group = mDrawablep->getSpatialGroup(); if (!group || group->isState(LLSpatialGroup::GEOM_DIRTY)) { return; } if (mVObjp->mGLName) { S32 name = mVObjp->mGLName; LLColor4U color((U8)(name >> 16), (U8)(name >> 8), (U8)name); #if 0 // *FIX: Postponing this fix until we have texcoord pick info... if (mTEOffset != -1) { color.mV[VALPHA] = (U8)(getTextureEntry()->getColor().mV[VALPHA] * 255.f); } #endif glColor4ubv(color.mV); if (!getPool()) { switch (getPoolType()) { case LLDrawPool::POOL_ALPHA: gGL.getTexUnit(0)->bind(getTexture()); break; default: gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE); break; } } mVertexBuffer->setBuffer(data_mask); #if !LL_RELEASE_FOR_DOWNLOAD LLGLState::checkClientArrays("", data_mask); #endif if (mTEOffset != -1) { // mask off high 4 bits (16 total possible faces) color.mV[0] &= 0x0f; color.mV[0] |= (mTEOffset & 0x0f) << 4; glColor4ubv(color.mV); } if (mIndicesCount) { if (isState(GLOBAL)) { if (mDrawablep->getVOVolume()) { glPushMatrix(); glMultMatrixf((float*) mDrawablep->getRegion()->mRenderMatrix.mMatrix); mVertexBuffer->draw(LLRender::TRIANGLES, mIndicesCount, mIndicesIndex); glPopMatrix(); } else { mVertexBuffer->draw(LLRender::TRIANGLES, mIndicesCount, mIndicesIndex); } } else { glPushMatrix(); glMultMatrixf((float*)getRenderMatrix().mMatrix); mVertexBuffer->draw(LLRender::TRIANGLES, mIndicesCount, mIndicesIndex); glPopMatrix(); } } } } void LLFace::renderSelected(LLViewerTexture *imagep, const LLColor4& color) { if (mDrawablep->getSpatialGroup() == NULL) { return; } mDrawablep->getSpatialGroup()->rebuildGeom(); mDrawablep->getSpatialGroup()->rebuildMesh(); if(mDrawablep.isNull() || mVertexBuffer.isNull()) { return; } if (mGeomCount > 0 && mIndicesCount > 0) { gGL.getTexUnit(0)->bind(imagep); gGL.pushMatrix(); if (mDrawablep->isActive()) { glMultMatrixf((GLfloat*)mDrawablep->getRenderMatrix().mMatrix); } else { glMultMatrixf((GLfloat*)mDrawablep->getRegion()->mRenderMatrix.mMatrix); } glColor4fv(color.mV); mVertexBuffer->setBuffer(LLVertexBuffer::MAP_VERTEX | LLVertexBuffer::MAP_TEXCOORD0); mVertexBuffer->draw(LLRender::TRIANGLES, mIndicesCount, mIndicesIndex); gGL.popMatrix(); } } /* removed in lieu of raycast uv detection void LLFace::renderSelectedUV() { LLViewerTexture* red_blue_imagep = LLViewerTextureManager::getFetchedTextureFromFile("uv_test1.j2c", TRUE, LLViewerTexture::BOOST_UI); LLViewerTexture* green_imagep = LLViewerTextureManager::getFetchedTextureFromFile("uv_test2.tga", TRUE, LLViewerTexture::BOOST_UI); LLGLSUVSelect object_select; // use red/blue gradient to get coarse UV coordinates renderSelected(red_blue_imagep, LLColor4::white); static F32 bias = 0.f; static F32 factor = -10.f; glPolygonOffset(factor, bias); // add green dither pattern on top of red/blue gradient gGL.blendFunc(LLRender::BF_ONE, LLRender::BF_ONE); glMatrixMode(GL_TEXTURE); glPushMatrix(); // make green pattern repeat once per texel in red/blue texture glScalef(256.f, 256.f, 1.f); glMatrixMode(GL_MODELVIEW); renderSelected(green_imagep, LLColor4::white); glMatrixMode(GL_TEXTURE); glPopMatrix(); glMatrixMode(GL_MODELVIEW); gGL.blendFunc(LLRender::BF_SOURCE_ALPHA, LLRender::BF_ONE_MINUS_SOURCE_ALPHA); } */ void LLFace::setDrawInfo(LLDrawInfo* draw_info) { if (draw_info) { if (draw_info->mFace) { draw_info->mFace->setDrawInfo(NULL); } draw_info->mFace = this; } if (mDrawInfo) { mDrawInfo->mFace = NULL; } mDrawInfo = draw_info; } void LLFace::printDebugInfo() const { LLFacePool *poolp = getPool(); llinfos << "Object: " << getViewerObject()->mID << llendl; if (getDrawable()) { llinfos << "Type: " << LLPrimitive::pCodeToString(getDrawable()->getVObj()->getPCode()) << llendl; } if (getTexture()) { llinfos << "Texture: " << getTexture() << " Comps: " << (U32)getTexture()->getComponents() << llendl; } else { llinfos << "No texture: " << llendl; } llinfos << "Face: " << this << llendl; llinfos << "State: " << getState() << llendl; llinfos << "Geom Index Data:" << llendl; llinfos << "--------------------" << llendl; llinfos << "GI: " << mGeomIndex << " Count:" << mGeomCount << llendl; llinfos << "Face Index Data:" << llendl; llinfos << "--------------------" << llendl; llinfos << "II: " << mIndicesIndex << " Count:" << mIndicesCount << llendl; llinfos << llendl; poolp->printDebugInfo(); S32 pool_references = 0; for (std::vector::iterator iter = poolp->mReferences.begin(); iter != poolp->mReferences.end(); iter++) { LLFace *facep = *iter; if (facep == this) { llinfos << "Pool reference: " << pool_references << llendl; pool_references++; } } if (pool_references != 1) { llinfos << "Incorrect number of pool references!" << llendl; } #if 0 llinfos << "Indices:" << llendl; llinfos << "--------------------" << llendl; const U32 *indicesp = getRawIndices(); S32 indices_count = getIndicesCount(); S32 geom_start = getGeomStart(); for (S32 i = 0; i < indices_count; i++) { llinfos << i << ":" << indicesp[i] << ":" << (S32)(indicesp[i] - geom_start) << llendl; } llinfos << llendl; llinfos << "Vertices:" << llendl; llinfos << "--------------------" << llendl; for (S32 i = 0; i < mGeomCount; i++) { llinfos << mGeomIndex + i << ":" << poolp->getVertex(mGeomIndex + i) << llendl; } llinfos << llendl; #endif } // Transform the texture coordinates for this face. static void xform(LLVector2 &tex_coord, F32 cosAng, F32 sinAng, F32 offS, F32 offT, F32 magS, F32 magT) { // New, good way F32 s = tex_coord.mV[0]; F32 t = tex_coord.mV[1]; // Texture transforms are done about the center of the face. s -= 0.5; t -= 0.5; // Handle rotation F32 temp = s; s = s * cosAng + t * sinAng; t = -temp * sinAng + t * cosAng; // Then scale s *= magS; t *= magT; // Then offset s += offS + 0.5f; t += offT + 0.5f; tex_coord.mV[0] = s; tex_coord.mV[1] = t; } BOOL LLFace::genVolumeBBoxes(const LLVolume &volume, S32 f, const LLMatrix4& mat_vert, const LLMatrix3& mat_normal, BOOL global_volume) { LLMemType mt1(LLMemType::MTYPE_DRAWABLE); //get bounding box if (mDrawablep->isState(LLDrawable::REBUILD_VOLUME | LLDrawable::REBUILD_POSITION)) { //if (mDrawablep->isState(LLDrawable::REBUILD_VOLUME)) //{ //vertex buffer no longer valid // mVertexBuffer = NULL; // mLastVertexBuffer = NULL; //} LLVector3 min,max; if (f >= volume.getNumVolumeFaces()) { min = LLVector3(-1,-1,-1); max = LLVector3(1,1,1); } else { const LLVolumeFace &face = volume.getVolumeFace(f); min = face.mExtents[0]; max = face.mExtents[1]; } //min, max are in volume space, convert to drawable render space LLVector3 center = ((min + max) * 0.5f)*mat_vert; LLVector3 size = ((max-min) * 0.5f); if (!global_volume) { size.scaleVec(mDrawablep->getVObj()->getScale()); } LLMatrix3 mat = mat_normal; LLVector3 x = mat.getFwdRow(); LLVector3 y = mat.getLeftRow(); LLVector3 z = mat.getUpRow(); x.normVec(); y.normVec(); z.normVec(); mat.setRows(x,y,z); LLQuaternion rotation = LLQuaternion(mat); LLVector3 v[4]; //get 4 corners of bounding box v[0] = (size * rotation); v[1] = (LLVector3(-size.mV[0], -size.mV[1], size.mV[2]) * rotation); v[2] = (LLVector3(size.mV[0], -size.mV[1], -size.mV[2]) * rotation); v[3] = (LLVector3(-size.mV[0], size.mV[1], -size.mV[2]) * rotation); LLVector3& newMin = mExtents[0]; LLVector3& newMax = mExtents[1]; newMin = newMax = center; for (U32 i = 0; i < 4; i++) { for (U32 j = 0; j < 3; j++) { F32 delta = fabsf(v[i].mV[j]); F32 min = center.mV[j] - delta; F32 max = center.mV[j] + delta; if (min < newMin.mV[j]) { newMin.mV[j] = min; } if (max > newMax.mV[j]) { newMax.mV[j] = max; } } } if (!mDrawablep->isActive()) { LLVector3 offset = mDrawablep->getRegion()->getOriginAgent(); newMin += offset; newMax += offset; } mCenterLocal = (newMin+newMax)*0.5f; LLVector3 tmp = (newMin - newMax) ; mBoundingSphereRadius = tmp.length() * 0.5f ; updateCenterAgent(); } return TRUE; } // convert surface coordinates to texture coordinates, based on // the values in the texture entry. probably should be // integrated with getGeometryVolume() for its texture coordinate // generation - but i'll leave that to someone more familiar // with the implications. LLVector2 LLFace::surfaceToTexture(LLVector2 surface_coord, LLVector3 position, LLVector3 normal) { LLVector2 tc = surface_coord; const LLTextureEntry *tep = getTextureEntry(); if (tep == NULL) { // can't do much without the texture entry return surface_coord; } // see if we have a non-default mapping U8 texgen = getTextureEntry()->getTexGen(); if (texgen != LLTextureEntry::TEX_GEN_DEFAULT) { LLVector3 center = mDrawablep->getVOVolume()->getVolume()->getVolumeFace(mTEOffset).mCenter; LLVector3 scale = (mDrawablep->getVOVolume()->isVolumeGlobal()) ? LLVector3(1,1,1) : mVObjp->getScale(); LLVector3 volume_position = mDrawablep->getVOVolume()->agentPositionToVolume(position); volume_position.scaleVec(scale); LLVector3 volume_normal = mDrawablep->getVOVolume()->agentDirectionToVolume(normal); volume_normal.normalize(); switch (texgen) { case LLTextureEntry::TEX_GEN_PLANAR: planarProjection(tc, volume_normal, center, volume_position); break; case LLTextureEntry::TEX_GEN_SPHERICAL: sphericalProjection(tc, volume_normal, center, volume_position); break; case LLTextureEntry::TEX_GEN_CYLINDRICAL: cylindricalProjection(tc, volume_normal, center, volume_position); break; default: break; } } if (mTextureMatrix) // if we have a texture matrix, use it { LLVector3 tc3(tc); tc3 = tc3 * *mTextureMatrix; tc = LLVector2(tc3); } else // otherwise use the texture entry parameters { xform(tc, cos(tep->getRotation()), sin(tep->getRotation()), tep->mOffsetS, tep->mOffsetT, tep->mScaleS, tep->mScaleT); } return tc; } void LLFace::updateRebuildFlags() { if (!mDrawablep->isState(LLDrawable::REBUILD_VOLUME)) { BOOL moved = TRUE; if (mLastVertexBuffer == mVertexBuffer && !mVertexBuffer->isEmpty()) { //this face really doesn't need to be regenerated, try real hard not to do so if (mLastGeomCount == mGeomCount && mLastGeomIndex == mGeomIndex && mLastIndicesCount == mIndicesCount && mLastIndicesIndex == mIndicesIndex) { //data is in same location in vertex buffer moved = FALSE; } } mLastMoveTime = gFrameTimeSeconds; if (moved) { mDrawablep->setState(LLDrawable::REBUILD_VOLUME); } } else { mLastUpdateTime = gFrameTimeSeconds; } } static LLFastTimer::DeclareTimer FTM_FACE_GET_GEOM("Face Geom"); BOOL LLFace::getGeometryVolume(const LLVolume& volume, const S32 &f, const LLMatrix4& mat_vert, const LLMatrix3& mat_normal, const U16 &index_offset, bool force_rebuild) { LLFastTimer t(FTM_FACE_GET_GEOM); const LLVolumeFace &vf = volume.getVolumeFace(f); S32 num_vertices = (S32)vf.mVertices.size(); S32 num_indices = LLPipeline::sUseTriStrips ? (S32)vf.mTriStrip.size() : (S32) vf.mIndices.size(); if (mVertexBuffer.notNull()) { if (num_indices + (S32) mIndicesIndex > mVertexBuffer->getNumIndices()) { llwarns << "Index buffer overflow!" << llendl; llwarns << "Indices Count: " << mIndicesCount << " VF Num Indices: " << num_indices << " Indices Index: " << mIndicesIndex << " VB Num Indices: " << mVertexBuffer->getNumIndices() << llendl; llwarns << "Last Indices Count: " << mLastIndicesCount << " Last Indices Index: " << mLastIndicesIndex << " Face Index: " << f << " Pool Type: " << mPoolType << llendl; return FALSE; } if (num_vertices + mGeomIndex > mVertexBuffer->getNumVerts()) { llwarns << "Vertex buffer overflow!" << llendl; return FALSE; } } LLStrider vertices; LLStrider tex_coords; LLStrider tex_coords2; LLStrider normals; LLStrider colors; LLStrider binormals; LLStrider indicesp; LLStrider weights; BOOL full_rebuild = force_rebuild || mDrawablep->isState(LLDrawable::REBUILD_VOLUME); BOOL global_volume = mDrawablep->getVOVolume()->isVolumeGlobal(); LLVector3 scale; if (global_volume) { scale.setVec(1,1,1); } else { scale = mVObjp->getScale(); } BOOL rebuild_pos = full_rebuild || mDrawablep->isState(LLDrawable::REBUILD_POSITION); BOOL rebuild_color = full_rebuild || mDrawablep->isState(LLDrawable::REBUILD_COLOR); BOOL rebuild_tcoord = full_rebuild || mDrawablep->isState(LLDrawable::REBUILD_TCOORD); BOOL rebuild_normal = rebuild_pos && mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_NORMAL); BOOL rebuild_binormal = rebuild_pos && mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_BINORMAL); bool rebuild_weights = rebuild_pos && mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_WEIGHT4); const LLTextureEntry *tep = mVObjp->getTE(f); U8 bump_code = tep ? tep->getBumpmap() : 0; if (rebuild_pos) { mVertexBuffer->getVertexStrider(vertices, mGeomIndex); } if (rebuild_normal) { mVertexBuffer->getNormalStrider(normals, mGeomIndex); } if (rebuild_binormal) { mVertexBuffer->getBinormalStrider(binormals, mGeomIndex); } if (rebuild_weights) { mVertexBuffer->getWeight4Strider(weights, mGeomIndex); } F32 tcoord_xoffset = 0.f ; F32 tcoord_yoffset = 0.f ; F32 tcoord_xscale = 1.f ; F32 tcoord_yscale = 1.f ; BOOL in_atlas = FALSE ; if (rebuild_tcoord) { mVertexBuffer->getTexCoord0Strider(tex_coords, mGeomIndex); if (bump_code && mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_TEXCOORD1)) { mVertexBuffer->getTexCoord1Strider(tex_coords2, mGeomIndex); } in_atlas = isAtlasInUse() ; if(in_atlas) { const LLVector2* tmp = getTexCoordOffset() ; tcoord_xoffset = tmp->mV[0] ; tcoord_yoffset = tmp->mV[1] ; tmp = getTexCoordScale() ; tcoord_xscale = tmp->mV[0] ; tcoord_yscale = tmp->mV[1] ; } } if (rebuild_color) { mVertexBuffer->getColorStrider(colors, mGeomIndex); } F32 r = 0, os = 0, ot = 0, ms = 0, mt = 0, cos_ang = 0, sin_ang = 0; BOOL is_static = mDrawablep->isStatic(); BOOL is_global = is_static; LLVector3 center_sum(0.f, 0.f, 0.f); if (is_global) { setState(GLOBAL); } else { clearState(GLOBAL); } LLVector2 tmin, tmax; if (rebuild_tcoord) { if (tep) { r = tep->getRotation(); os = tep->mOffsetS; ot = tep->mOffsetT; ms = tep->mScaleS; mt = tep->mScaleT; cos_ang = cos(r); sin_ang = sin(r); } else { cos_ang = 1.0f; sin_ang = 0.0f; os = 0.0f; ot = 0.0f; ms = 1.0f; mt = 1.0f; } } U8 tex_mode = 0; if (isState(TEXTURE_ANIM)) { LLVOVolume* vobj = (LLVOVolume*) (LLViewerObject*) mVObjp; tex_mode = vobj->mTexAnimMode; if (!tex_mode) { clearState(TEXTURE_ANIM); } else { os = ot = 0.f; r = 0.f; cos_ang = 1.f; sin_ang = 0.f; ms = mt = 1.f; } if (getVirtualSize() >= MIN_TEX_ANIM_SIZE) { //don't override texture transform during tc bake tex_mode = 0; } } LLColor4U color = tep->getColor(); if (rebuild_color) { if (tep) { GLfloat alpha[4] = { 0.00f, 0.25f, 0.5f, 0.75f }; if (getPoolType() != LLDrawPool::POOL_ALPHA && (LLPipeline::sRenderDeferred || (LLPipeline::sRenderBump && tep->getShiny()))) { color.mV[3] = U8 (alpha[tep->getShiny()] * 255); } } } // INDICES if (full_rebuild) { mVertexBuffer->getIndexStrider(indicesp, mIndicesIndex); if (LLPipeline::sUseTriStrips) { for (U32 i = 0; i < (U32) num_indices; i++) { *indicesp++ = vf.mTriStrip[i] + index_offset; } } else { for (U32 i = 0; i < (U32) num_indices; i++) { *indicesp++ = vf.mIndices[i] + index_offset; } } } //bump setup LLVector3 binormal_dir( -sin_ang, cos_ang, 0 ); LLVector3 bump_s_primary_light_ray; LLVector3 bump_t_primary_light_ray; LLQuaternion bump_quat; if (mDrawablep->isActive()) { bump_quat = LLQuaternion(mDrawablep->getRenderMatrix()); } if (bump_code) { mVObjp->getVolume()->genBinormals(f); F32 offset_multiple; switch( bump_code ) { case BE_NO_BUMP: offset_multiple = 0.f; break; case BE_BRIGHTNESS: case BE_DARKNESS: if( mTexture.notNull() && mTexture->hasGLTexture()) { // Offset by approximately one texel S32 cur_discard = mTexture->getDiscardLevel(); S32 max_size = llmax( mTexture->getWidth(), mTexture->getHeight() ); max_size <<= cur_discard; const F32 ARTIFICIAL_OFFSET = 2.f; offset_multiple = ARTIFICIAL_OFFSET / (F32)max_size; } else { offset_multiple = 1.f/256; } break; default: // Standard bumpmap textures. Assumed to be 256x256 offset_multiple = 1.f / 256; break; } F32 s_scale = 1.f; F32 t_scale = 1.f; if( tep ) { tep->getScale( &s_scale, &t_scale ); } // Use the nudged south when coming from above sun angle, such // that emboss mapping always shows up on the upward faces of cubes when // it's noon (since a lot of builders build with the sun forced to noon). LLVector3 sun_ray = gSky.mVOSkyp->mBumpSunDir; LLVector3 moon_ray = gSky.getMoonDirection(); LLVector3& primary_light_ray = (sun_ray.mV[VZ] > 0) ? sun_ray : moon_ray; bump_s_primary_light_ray = offset_multiple * s_scale * primary_light_ray; bump_t_primary_light_ray = offset_multiple * t_scale * primary_light_ray; } U8 texgen = getTextureEntry()->getTexGen(); if (rebuild_tcoord && texgen != LLTextureEntry::TEX_GEN_DEFAULT) { //planar texgen needs binormals mVObjp->getVolume()->genBinormals(f); } for (S32 i = 0; i < num_vertices; i++) { if (rebuild_tcoord) { LLVector2 tc = vf.mVertices[i].mTexCoord; if (texgen != LLTextureEntry::TEX_GEN_DEFAULT) { LLVector3 vec = vf.mVertices[i].mPosition; vec.scaleVec(scale); switch (texgen) { case LLTextureEntry::TEX_GEN_PLANAR: planarProjection(tc, vf.mVertices[i].mNormal, vf.mCenter, vec); break; case LLTextureEntry::TEX_GEN_SPHERICAL: sphericalProjection(tc, vf.mVertices[i].mNormal, vf.mCenter, vec); break; case LLTextureEntry::TEX_GEN_CYLINDRICAL: cylindricalProjection(tc, vf.mVertices[i].mNormal, vf.mCenter, vec); break; default: break; } } if (tex_mode && mTextureMatrix) { LLVector3 tmp(tc.mV[0], tc.mV[1], 0.f); tmp = tmp * *mTextureMatrix; tc.mV[0] = tmp.mV[0]; tc.mV[1] = tmp.mV[1]; } else { xform(tc, cos_ang, sin_ang, os, ot, ms, mt); } if(in_atlas) { // //manually calculate tex-coord per vertex for varying address modes. //should be removed if shader can handle this. // S32 int_part = 0 ; switch(mTexture->getAddressMode()) { case LLTexUnit::TAM_CLAMP: if(tc.mV[0] < 0.f) { tc.mV[0] = 0.f ; } else if(tc.mV[0] > 1.f) { tc.mV[0] = 1.f; } if(tc.mV[1] < 0.f) { tc.mV[1] = 0.f ; } else if(tc.mV[1] > 1.f) { tc.mV[1] = 1.f; } break; case LLTexUnit::TAM_MIRROR: if(tc.mV[0] < 0.f) { tc.mV[0] = -tc.mV[0] ; } int_part = (S32)tc.mV[0] ; if(int_part & 1) //odd number { tc.mV[0] = int_part + 1 - tc.mV[0] ; } else //even number { tc.mV[0] -= int_part ; } if(tc.mV[1] < 0.f) { tc.mV[1] = -tc.mV[1] ; } int_part = (S32)tc.mV[1] ; if(int_part & 1) //odd number { tc.mV[1] = int_part + 1 - tc.mV[1] ; } else //even number { tc.mV[1] -= int_part ; } break; case LLTexUnit::TAM_WRAP: if(tc.mV[0] > 1.f) tc.mV[0] -= (S32)(tc.mV[0] - 0.00001f) ; else if(tc.mV[0] < -1.f) tc.mV[0] -= (S32)(tc.mV[0] + 0.00001f) ; if(tc.mV[1] > 1.f) tc.mV[1] -= (S32)(tc.mV[1] - 0.00001f) ; else if(tc.mV[1] < -1.f) tc.mV[1] -= (S32)(tc.mV[1] + 0.00001f) ; if(tc.mV[0] < 0.f) { tc.mV[0] = 1.0f + tc.mV[0] ; } if(tc.mV[1] < 0.f) { tc.mV[1] = 1.0f + tc.mV[1] ; } break; default: break; } tc.mV[0] = tcoord_xoffset + tcoord_xscale * tc.mV[0] ; tc.mV[1] = tcoord_yoffset + tcoord_yscale * tc.mV[1] ; } *tex_coords++ = tc; if (bump_code && mVertexBuffer->hasDataType(LLVertexBuffer::TYPE_TEXCOORD1)) { LLVector3 tangent = vf.mVertices[i].mBinormal % vf.mVertices[i].mNormal; LLMatrix3 tangent_to_object; tangent_to_object.setRows(tangent, vf.mVertices[i].mBinormal, vf.mVertices[i].mNormal); LLVector3 binormal = binormal_dir * tangent_to_object; binormal = binormal * mat_normal; if (mDrawablep->isActive()) { binormal *= bump_quat; } binormal.normVec(); tc += LLVector2( bump_s_primary_light_ray * tangent, bump_t_primary_light_ray * binormal ); *tex_coords2++ = tc; } } if (rebuild_pos) { *vertices++ = vf.mVertices[i].mPosition * mat_vert; } if (rebuild_normal) { LLVector3 normal = vf.mVertices[i].mNormal * mat_normal; normal.normVec(); *normals++ = normal; } if (rebuild_binormal) { LLVector3 binormal = vf.mVertices[i].mBinormal * mat_normal; binormal.normVec(); *binormals++ = binormal; } if (rebuild_weights) { *weights++ = vf.mWeights[i]; } if (rebuild_color) { *colors++ = color; } } if (rebuild_tcoord) { mTexExtents[0].setVec(0,0); mTexExtents[1].setVec(1,1); xform(mTexExtents[0], cos_ang, sin_ang, os, ot, ms, mt); xform(mTexExtents[1], cos_ang, sin_ang, os, ot, ms, mt); } mLastVertexBuffer = mVertexBuffer; mLastGeomCount = mGeomCount; mLastGeomIndex = mGeomIndex; mLastIndicesCount = mIndicesCount; mLastIndicesIndex = mIndicesIndex; return TRUE; } //check if the face has a media BOOL LLFace::hasMedia() const { if(mHasMedia) { return TRUE ; } if(mTexture.notNull()) { return mTexture->hasParcelMedia() ; //if has a parcel media } return FALSE ; //no media. } const F32 LEAST_IMPORTANCE = 0.05f ; const F32 LEAST_IMPORTANCE_FOR_LARGE_IMAGE = 0.3f ; F32 LLFace::getTextureVirtualSize() { F32 radius; F32 cos_angle_to_view_dir; BOOL in_frustum = calcPixelArea(cos_angle_to_view_dir, radius); if (mPixelArea < 0.0001f || !in_frustum) { setVirtualSize(0.f) ; return 0.f; } //get area of circle in texture space LLVector2 tdim = mTexExtents[1] - mTexExtents[0]; F32 texel_area = (tdim * 0.5f).lengthSquared()*3.14159f; if (texel_area <= 0) { // Probably animated, use default texel_area = 1.f; } //apply texel area to face area to get accurate ratio //face_area /= llclamp(texel_area, 1.f/64.f, 16.f); F32 face_area = mPixelArea / llclamp(texel_area, 0.015625f, 128.f); if(face_area > LLViewerTexture::sMaxSmallImageSize) { if(mImportanceToCamera < LEAST_IMPORTANCE) //if the face is not important, do not load hi-res. { static const F32 MAX_LEAST_IMPORTANCE_IMAGE_SIZE = 128.0f * 128.0f ; face_area = llmin(face_area * 0.5f, MAX_LEAST_IMPORTANCE_IMAGE_SIZE) ; } else if(face_area > LLViewerTexture::sMinLargeImageSize) //if is large image, shrink face_area by considering the partial overlapping. { if(mImportanceToCamera < LEAST_IMPORTANCE_FOR_LARGE_IMAGE)//if the face is not important, do not load hi-res. { face_area = LLViewerTexture::sMinLargeImageSize ; } else if(mTexture.notNull() && mTexture->isLargeImage()) { face_area *= adjustPartialOverlapPixelArea(cos_angle_to_view_dir, radius ); } } } setVirtualSize(face_area) ; return face_area; } BOOL LLFace::calcPixelArea(F32& cos_angle_to_view_dir, F32& radius) { //get area of circle around face LLVector3 center = getPositionAgent(); LLVector3 size = (mExtents[1] - mExtents[0]) * 0.5f; LLViewerCamera* camera = LLViewerCamera::getInstance(); F32 size_squared = size.lengthSquared() ; LLVector3 lookAt = center - camera->getOrigin(); F32 dist = lookAt.normVec() ; //get area of circle around node F32 app_angle = atanf(fsqrtf(size_squared) / dist); radius = app_angle*LLDrawable::sCurPixelAngle; mPixelArea = radius*radius * 3.14159f; cos_angle_to_view_dir = lookAt * camera->getXAxis() ; //if has media, check if the face is out of the view frustum. if(hasMedia()) { if(!camera->AABBInFrustum(center, size)) { mImportanceToCamera = 0.f ; return false ; } if(cos_angle_to_view_dir > camera->getCosHalfFov()) //the center is within the view frustum { cos_angle_to_view_dir = 1.0f ; } else { if(dist * dist * (lookAt - camera->getXAxis()).lengthSquared() < size_squared) { cos_angle_to_view_dir = 1.0f ; } } } if(dist < mBoundingSphereRadius) //camera is very close { cos_angle_to_view_dir = 1.0f ; mImportanceToCamera = 1.0f ; } else { mImportanceToCamera = LLFace::calcImportanceToCamera(cos_angle_to_view_dir, dist) ; } return true ; } //the projection of the face partially overlaps with the screen F32 LLFace::adjustPartialOverlapPixelArea(F32 cos_angle_to_view_dir, F32 radius ) { F32 screen_radius = (F32)llmax(gViewerWindow->getWindowWidthRaw(), gViewerWindow->getWindowHeightRaw()) ; F32 center_angle = acosf(cos_angle_to_view_dir) ; F32 d = center_angle * LLDrawable::sCurPixelAngle ; if(d + radius > screen_radius + 5.f) { //---------------------------------------------- //calculate the intersection area of two circles //F32 radius_square = radius * radius ; //F32 d_square = d * d ; //F32 screen_radius_square = screen_radius * screen_radius ; //face_area = // radius_square * acosf((d_square + radius_square - screen_radius_square)/(2 * d * radius)) + // screen_radius_square * acosf((d_square + screen_radius_square - radius_square)/(2 * d * screen_radius)) - // 0.5f * sqrtf((-d + radius + screen_radius) * (d + radius - screen_radius) * (d - radius + screen_radius) * (d + radius + screen_radius)) ; //---------------------------------------------- //the above calculation is too expensive //the below is a good estimation: bounding box of the bounding sphere: F32 alpha = 0.5f * (radius + screen_radius - d) / radius ; alpha = llclamp(alpha, 0.f, 1.f) ; return alpha * alpha ; } return 1.0f ; } const S8 FACE_IMPORTANCE_LEVEL = 4 ; const F32 FACE_IMPORTANCE_TO_CAMERA_OVER_DISTANCE[FACE_IMPORTANCE_LEVEL][2] = //{distance, importance_weight} {{16.1f, 1.0f}, {32.1f, 0.5f}, {48.1f, 0.2f}, {96.1f, 0.05f} } ; const F32 FACE_IMPORTANCE_TO_CAMERA_OVER_ANGLE[FACE_IMPORTANCE_LEVEL][2] = //{cos(angle), importance_weight} {{0.985f /*cos(10 degrees)*/, 1.0f}, {0.94f /*cos(20 degrees)*/, 0.8f}, {0.866f /*cos(30 degrees)*/, 0.64f}, {0.0f, 0.36f}} ; //static F32 LLFace::calcImportanceToCamera(F32 cos_angle_to_view_dir, F32 dist) { F32 importance = 0.f ; if(cos_angle_to_view_dir > LLViewerCamera::getInstance()->getCosHalfFov() && dist < FACE_IMPORTANCE_TO_CAMERA_OVER_DISTANCE[FACE_IMPORTANCE_LEVEL - 1][0]) { LLViewerCamera* camera = LLViewerCamera::getInstance(); F32 camera_moving_speed = camera->getAverageSpeed() ; F32 camera_angular_speed = camera->getAverageAngularSpeed(); if(camera_moving_speed > 10.0f || camera_angular_speed > 1.0f) { //if camera moves or rotates too fast, ignore the importance factor return 0.f ; } //F32 camera_relative_speed = camera_moving_speed * (lookAt * LLViewerCamera::getInstance()->getVelocityDir()) ; S32 i = 0 ; for(i = 0; i < FACE_IMPORTANCE_LEVEL && dist > FACE_IMPORTANCE_TO_CAMERA_OVER_DISTANCE[i][0]; ++i); i = llmin(i, FACE_IMPORTANCE_LEVEL - 1) ; F32 dist_factor = FACE_IMPORTANCE_TO_CAMERA_OVER_DISTANCE[i][1] ; for(i = 0; i < FACE_IMPORTANCE_LEVEL && cos_angle_to_view_dir < FACE_IMPORTANCE_TO_CAMERA_OVER_ANGLE[i][0] ; ++i) ; i = llmin(i, FACE_IMPORTANCE_LEVEL - 1) ; importance = dist_factor * FACE_IMPORTANCE_TO_CAMERA_OVER_ANGLE[i][1] ; } return importance ; } BOOL LLFace::verify(const U32* indices_array) const { BOOL ok = TRUE; if( mVertexBuffer.isNull() ) { if( mGeomCount ) { // This happens before teleports as faces are torn down. // Stop the crash in DEV-31893 with a null pointer check, // but present this info. // To clean up the log, the geometry could be cleared, or the // face could otherwise be marked for no ::verify. llinfos << "Face with no vertex buffer and " << mGeomCount << " mGeomCount" << llendl; } return TRUE; } // First, check whether the face data fits within the pool's range. if ((mGeomIndex + mGeomCount) > mVertexBuffer->getNumVerts()) { ok = FALSE; llinfos << "Face not within pool range!" << llendl; } S32 indices_count = (S32)getIndicesCount(); if (!indices_count) { return TRUE; } if (indices_count > LL_MAX_INDICES_COUNT) { ok = FALSE; llinfos << "Face has bogus indices count" << llendl; } #if 0 S32 geom_start = getGeomStart(); S32 geom_count = mGeomCount; const U32 *indicesp = indices_array ? indices_array + mIndicesIndex : getRawIndices(); for (S32 i = 0; i < indices_count; i++) { S32 delta = indicesp[i] - geom_start; if (0 > delta) { llwarns << "Face index too low!" << llendl; llinfos << "i:" << i << " Index:" << indicesp[i] << " GStart: " << geom_start << llendl; ok = FALSE; } else if (delta >= geom_count) { llwarns << "Face index too high!" << llendl; llinfos << "i:" << i << " Index:" << indicesp[i] << " GEnd: " << geom_start + geom_count << llendl; ok = FALSE; } } #endif if (!ok) { printDebugInfo(); } return ok; } void LLFace::setViewerObject(LLViewerObject* objp) { mVObjp = objp; } const LLColor4& LLFace::getRenderColor() const { if (isState(USE_FACE_COLOR)) { return mFaceColor; // Face Color } else { const LLTextureEntry* tep = getTextureEntry(); return (tep ? tep->getColor() : LLColor4::white); } } void LLFace::renderSetColor() const { if (!LLFacePool::LLOverrideFaceColor::sOverrideFaceColor) { const LLColor4* color = &(getRenderColor()); glColor4fv(color->mV); } } S32 LLFace::pushVertices(const U16* index_array) const { if (mIndicesCount) { U32 render_type = LLRender::TRIANGLES; if (mDrawInfo) { render_type = mDrawInfo->mDrawMode; } mVertexBuffer->drawRange(render_type, mGeomIndex, mGeomIndex+mGeomCount-1, mIndicesCount, mIndicesIndex); gPipeline.addTrianglesDrawn(mIndicesCount, render_type); } return mIndicesCount; } const LLMatrix4& LLFace::getRenderMatrix() const { return mDrawablep->getRenderMatrix(); } S32 LLFace::renderElements(const U16 *index_array) const { S32 ret = 0; if (isState(GLOBAL)) { ret = pushVertices(index_array); } else { glPushMatrix(); glMultMatrixf((float*)getRenderMatrix().mMatrix); ret = pushVertices(index_array); glPopMatrix(); } return ret; } S32 LLFace::renderIndexed() { if(mDrawablep.isNull() || mDrawPoolp == NULL) { return 0; } return renderIndexed(mDrawPoolp->getVertexDataMask()); } S32 LLFace::renderIndexed(U32 mask) { if (mVertexBuffer.isNull()) { return 0; } mVertexBuffer->setBuffer(mask); U16* index_array = (U16*) mVertexBuffer->getIndicesPointer(); return renderElements(index_array); } //============================================================================ // From llface.inl S32 LLFace::getColors(LLStrider &colors) { if (!mGeomCount) { return -1; } // llassert(mGeomIndex >= 0); mVertexBuffer->getColorStrider(colors, mGeomIndex); return mGeomIndex; } S32 LLFace::getIndices(LLStrider &indicesp) { mVertexBuffer->getIndexStrider(indicesp, mIndicesIndex); llassert(indicesp[0] != indicesp[1]); return mIndicesIndex; } LLVector3 LLFace::getPositionAgent() const { if (mDrawablep->isStatic()) { return mCenterAgent; } else { return mCenterLocal * getRenderMatrix(); } } // //atlas // void LLFace::removeAtlas() { setAtlasInUse(FALSE) ; mAtlasInfop = NULL ; } const LLTextureAtlas* LLFace::getAtlas()const { if(mAtlasInfop) { return mAtlasInfop->getAtlas() ; } return NULL ; } const LLVector2* LLFace::getTexCoordOffset()const { if(isAtlasInUse()) { return mAtlasInfop->getTexCoordOffset() ; } return NULL ; } const LLVector2* LLFace::getTexCoordScale() const { if(isAtlasInUse()) { return mAtlasInfop->getTexCoordScale() ; } return NULL ; } BOOL LLFace::isAtlasInUse()const { return mUsingAtlas ; } BOOL LLFace::canUseAtlas()const { //no drawable or no spatial group, do not use atlas if(!mDrawablep || !mDrawablep->getSpatialGroup()) { return FALSE ; } //if bump face, do not use atlas if(getTextureEntry() && getTextureEntry()->getBumpmap()) { return FALSE ; } //if animated texture, do not use atlas if(isState(TEXTURE_ANIM)) { return FALSE ; } return TRUE ; } void LLFace::setAtlasInUse(BOOL flag) { //no valid atlas to use. if(flag && (!mAtlasInfop || !mAtlasInfop->isValid())) { flag = FALSE ; } if(!flag && !mUsingAtlas) { return ; } // //at this stage (flag || mUsingAtlas) is always true. // //rebuild the tex coords if(mDrawablep) { gPipeline.markRebuild(mDrawablep, LLDrawable::REBUILD_TCOORD); mUsingAtlas = flag ; } else { mUsingAtlas = FALSE ; } } LLTextureAtlasSlot* LLFace::getAtlasInfo() { return mAtlasInfop ; } void LLFace::setAtlasInfo(LLTextureAtlasSlot* atlasp) { if(mAtlasInfop != atlasp) { if(mAtlasInfop) { //llerrs << "Atlas slot changed!" << llendl ; } mAtlasInfop = atlasp ; } } LLViewerTexture* LLFace::getTexture() const { if(isAtlasInUse()) { return (LLViewerTexture*)mAtlasInfop->getAtlas() ; } return mTexture ; } //switch to atlas or switch back to gl texture //return TRUE if using atlas. BOOL LLFace::switchTexture() { //no valid atlas or texture if(!mAtlasInfop || !mAtlasInfop->isValid() || !mTexture) { return FALSE ; } if(mTexture->getTexelsInAtlas() >= (U32)mVSize || mTexture->getTexelsInAtlas() >= mTexture->getTexelsInGLTexture()) { //switch to use atlas //atlas resolution is qualified, use it. if(!mUsingAtlas) { setAtlasInUse(TRUE) ; } } else //if atlas not qualified. { //switch back to GL texture if(mUsingAtlas && mTexture->isGLTextureCreated() && mTexture->getDiscardLevel() < mTexture->getDiscardLevelInAtlas()) { setAtlasInUse(FALSE) ; } } return mUsingAtlas ; }