C++ LLDrawable类代码示例

void LLSpatialBridge::cleanupReferences()
{	
	LLDrawable::cleanupReferences();
	if (mDrawable)
	{
		/*
		
		DON'T DO THIS -- this should happen through octree destruction

		mDrawable->setSpatialGroup(NULL);
		if (mDrawable->getVObj())
		{
			LLViewerObject::const_child_list_t& child_list = mDrawable->getVObj()->getChildren();
			for (LLViewerObject::child_list_t::const_iterator iter = child_list.begin();
				 iter != child_list.end(); iter++)
			{
				LLViewerObject* child = *iter;
				LLDrawable* drawable = child->mDrawable;					
				if (drawable)
				{
					drawable->setSpatialGroup(NULL);
				}
			}
		}*/

		LLDrawable* drawablep = mDrawable;
		mDrawable = NULL;
		drawablep->setSpatialBridge(NULL);
	}
}

			virtual bool apply(LLViewerObject* vobjp)
			{
				LLDrawable* drawable = vobjp->mDrawable;
				if (!drawable || vobjp->getPCode() != LL_PCODE_VOLUME || vobjp->isAttachment())
				{
					return true;
				}
				S32 result = LLViewerCamera::getInstance()->sphereInFrustum(drawable->getPositionAgent(), drawable->getRadius());
				switch (result)
				{
				  case 0:
					LLSelectMgr::getInstance()->unhighlightObjectOnly(vobjp);
					break;
				  case 1:
					// check vertices
					if (!LLViewerCamera::getInstance()->areVertsVisible(vobjp, LLSelectMgr::sRectSelectInclusive))
					{
						LLSelectMgr::getInstance()->unhighlightObjectOnly(vobjp);
					}
					break;
				  default:
					break;
				}
				return true;
			}

void LLSpatialBridge::updateDistance(LLCamera& camera_in, bool force_update)
{
	if (mDrawable == NULL)
	{
		markDead();
		return;
	}

	LLCamera camera = transformCamera(camera_in);
	
	mDrawable->updateDistance(camera, force_update);
	
	if (mDrawable->getVObj())
	{
		LLViewerObject::const_child_list_t& child_list = mDrawable->getVObj()->getChildren();
		for (LLViewerObject::child_list_t::const_iterator iter = child_list.begin();
			 iter != child_list.end(); iter++)
		{
			LLViewerObject* child = *iter;
			LLDrawable* drawable = child->mDrawable;					
			if (!drawable)
			{
				continue;
			}

			if (!drawable->isAvatar())
			{
				drawable->updateDistance(camera, force_update);
			}
		}
	}
}

void LLSpatialBridge::updateDistance(LLCamera& camera_in)
{
	if (mDrawable == NULL)
	{
		markDead();
		return;
	}

	LLCamera camera = transformCamera(camera_in);
	
	mDrawable->updateDistance(camera);
	
	if (mDrawable->getVObj())
	{
		LLViewerObject::const_child_list_t& child_list = mDrawable->getVObj()->getChildren();
		for (LLViewerObject::child_list_t::const_iterator iter = child_list.begin();
			 iter != child_list.end(); iter++)
		{
			LLViewerObject* child = *iter;
			LLDrawable* drawable = child->mDrawable;					
			if (!drawable)
			{
				llwarns << "Corrupt drawable found while updating spatial bridge distance." << llendl;
				continue;
			}

			if (!drawable->isAvatar())
			{
				drawable->updateDistance(camera);
			}
		}
	}
}

void LLSpatialBridge::cleanupReferences()
{	
	LLDrawable::cleanupReferences();
	if (mDrawable)
	{
		mDrawable->setSpatialGroup(NULL);
		if (mDrawable->getVObj())
		{
			LLViewerObject::const_child_list_t& child_list = mDrawable->getVObj()->getChildren();
			for (LLViewerObject::child_list_t::const_iterator iter = child_list.begin();
				 iter != child_list.end(); iter++)
			{
				LLViewerObject* child = *iter;
				LLDrawable* drawable = child->mDrawable;					
				if (drawable)
				{
					drawable->setSpatialGroup(NULL);
				}
			}
		}

		LLDrawable* drawablep = mDrawable;
		mDrawable = NULL;
		drawablep->setSpatialBridge(NULL);
	}
}

void LLDrawable::makeActive()
{		
#if !LL_RELEASE_FOR_DOWNLOAD
	if (mVObjp.notNull())
	{
		U32 pcode = mVObjp->getPCode();
		if (pcode == LLViewerObject::LL_VO_WATER ||
			pcode == LLViewerObject::LL_VO_VOID_WATER ||
			pcode == LLViewerObject::LL_VO_SURFACE_PATCH ||
			pcode == LLViewerObject::LL_VO_PART_GROUP ||
			pcode == LLViewerObject::LL_VO_HUD_PART_GROUP ||
#if ENABLE_CLASSIC_CLOUDS
			pcode == LLViewerObject::LL_VO_CLOUDS ||
#endif
			pcode == LLViewerObject::LL_VO_GROUND ||
			pcode == LLViewerObject::LL_VO_SKY)
		{
			LL_ERRS() << "Static viewer object has active drawable!" << LL_ENDL;
		}
	}
#endif

	if (!isState(ACTIVE)) // && mGeneration > 0)
	{
		setState(ACTIVE);
		
		//parent must be made active first
		if (!isRoot() && !mParent->isActive())
		{
			mParent->makeActive();
			//NOTE: linked set will now NEVER become static
			mParent->setState(LLDrawable::ACTIVE_CHILD);
		}

		//all child objects must also be active
		llassert_always(mVObjp);
		
		LLViewerObject::const_child_list_t& child_list = mVObjp->getChildren();
		for (LLViewerObject::child_list_t::const_iterator iter = child_list.begin();
			 iter != child_list.end(); iter++)
		{
			LLViewerObject* child = *iter;
			LLDrawable* drawable = child->mDrawable;
			if (drawable)
			{
				drawable->makeActive();
			}
		}

		if (mVObjp->getPCode() == LL_PCODE_VOLUME)
		{
			gPipeline.markRebuild(this, LLDrawable::REBUILD_VOLUME, TRUE);
		}
		updatePartition();
	}

	llassert(isAvatar() || isRoot() || mParent->isActive());
}

void LLSpatialBridge::updateDistance(LLCamera& camera_in, bool force_update)
{
	if (mDrawable == NULL)
	{
		markDead();
		return;
	}

	if (gShiftFrame)
	{
		return;
	}

	if (mDrawable->getVObj())
	{
		if (mDrawable->getVObj()->isAttachment())
		{
			LLDrawable* parent = mDrawable->getParent();
			if (parent)
			{
				LLViewerObject *obj = parent->getVObj();
				if (obj && obj->isAvatar() && ((LLVOAvatar*)obj)->isImpostor())
				{
					return;
				}
			}
			else
			{
				static const LLCachedControl<bool> draw_orphans("ShyotlDrawOrphanAttachments",false);
				if(!draw_orphans)
					return;
			}
		}

		LLCamera camera = transformCamera(camera_in);
	
		mDrawable->updateDistance(camera, force_update);
	
		LLViewerObject::const_child_list_t& child_list = mDrawable->getVObj()->getChildren();
		for (LLViewerObject::child_list_t::const_iterator iter = child_list.begin();
			 iter != child_list.end(); iter++)
		{
			LLViewerObject* child = *iter;
			LLDrawable* drawable = child->mDrawable;					
			if (!drawable)
			{
				continue;
			}

			if (!drawable->isAvatar())
			{
				drawable->updateDistance(camera, force_update);
			}
		}
	}
}

void LLDrawPoolTree::renderForSelect()
{
	if (mDrawFace.empty())
	{
		return;
	}

	LLOverrideFaceColor color(this, 1.f, 1.f, 1.f, 1.f);

	LLGLSObjectSelectAlpha gls_alpha;
	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);

	gGL.setSceneBlendType(LLRender::BT_REPLACE);
	gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.5f);

	gGL.getTexUnit(0)->setTextureColorBlend(LLTexUnit::TBO_REPLACE, LLTexUnit::TBS_PREV_COLOR);
	gGL.getTexUnit(0)->setTextureAlphaBlend(LLTexUnit::TBO_MULT, LLTexUnit::TBS_TEX_ALPHA, LLTexUnit::TBS_VERT_ALPHA);

	if (gSavedSettings.getBOOL("RenderAnimateTrees"))
	{
		renderTree(TRUE);
	}
	else
	{
		gGL.getTexUnit(sDiffTex)->bind(mTexturep);
				
		for (std::vector<LLFace*>::iterator iter = mDrawFace.begin();
			 iter != mDrawFace.end(); iter++)
		{
			LLFace *face = *iter;
			LLDrawable *drawablep = face->getDrawable();

			if (drawablep->isDead() || face->mVertexBuffer.isNull())
			{
				continue;
			}

			// Render each of the trees
			LLVOTree *treep = (LLVOTree *)drawablep->getVObj().get();

			LLColor4U color(255,255,255,255);

			if (treep->mGLName != 0)
			{
				S32 name = treep->mGLName;
				color = LLColor4U((U8)(name >> 16), (U8)(name >> 8), (U8)name, 255);
				
				LLFacePool::LLOverrideFaceColor col(this, color);
				
				face->mVertexBuffer->setBuffer(LLDrawPoolTree::VERTEX_DATA_MASK);
				face->mVertexBuffer->drawRange(LLRender::TRIANGLES, 0, face->mVertexBuffer->getRequestedVerts()-1, face->mVertexBuffer->getRequestedIndices(), 0); 
				gPipeline.addTrianglesDrawn(face->mVertexBuffer->getRequestedIndices()/3);
			}
		}
	}

void LLDrawPoolTerrain::renderOwnership()
{
	LLGLSPipelineAlpha gls_pipeline_alpha;

	llassert(!mDrawFace.empty());

	// Each terrain pool is associated with a single region.
	// We need to peek back into the viewer's data to find out
	// which ownership overlay texture to use.
	LLFace					*facep				= mDrawFace[0];
	LLDrawable				*drawablep			= facep->getDrawable();
	const LLViewerObject	*objectp				= drawablep->getVObj();
	const LLVOSurfacePatch	*vo_surface_patchp	= (LLVOSurfacePatch *)objectp;
	LLSurfacePatch			*surface_patchp		= vo_surface_patchp->getPatch();
	LLSurface				*surfacep			= surface_patchp->getSurface();
	LLViewerRegion			*regionp			= surfacep->getRegion();
	LLViewerParcelOverlay	*overlayp			= regionp->getParcelOverlay();
	LLImageGL				*texturep			= overlayp->getTexture();

	glEnableClientState(GL_VERTEX_ARRAY);
	glDisableClientState(GL_NORMAL_ARRAY);

	LLViewerImage::bindTexture(texturep);

	glClientActiveTextureARB(GL_TEXTURE0_ARB);
	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
	
	// *NOTE: Because the region is 256 meters wide, but has 257 pixels, the 
	// texture coordinates for pixel 256x256 is not 1,1. This makes the
	// ownership map not line up with the selection. We address this with
	// a texture matrix multiply.
	glMatrixMode(GL_TEXTURE);
	glPushMatrix();

	const F32 TEXTURE_FUDGE = 257.f / 256.f;
	glScalef( TEXTURE_FUDGE, TEXTURE_FUDGE, 1.f );

	for (std::vector<LLFace*>::iterator iter = mDrawFace.begin();
		 iter != mDrawFace.end(); iter++)
	{
		LLFace *facep = *iter;
		facep->renderIndexed(LLVertexBuffer::MAP_VERTEX |
							LLVertexBuffer::MAP_TEXCOORD);
	}

	glMatrixMode(GL_TEXTURE);
	glPopMatrix();
	glMatrixMode(GL_MODELVIEW);

	// Restore non Texture Unit specific defaults
	glDisableClientState(GL_NORMAL_ARRAY);
}

void LLDrawPoolAvatar::updateRiggedVertexBuffers(LLVOAvatar* avatar)
{
	LLFastTimer t(FTM_RIGGED_VBO);

	//update rigged vertex buffers
	for (U32 type = 0; type < NUM_RIGGED_PASSES; ++type)
	{
		for (U32 i = 0; i < mRiggedFace[type].size(); ++i)
		{
			LLFace* face = mRiggedFace[type][i];
			LLDrawable* drawable = face->getDrawable();
			if (!drawable)
			{
				continue;
			}

			LLVOVolume* vobj = drawable->getVOVolume();

			if (!vobj)
			{
				continue;
			}

			LLVolume* volume = vobj->getVolume();
			S32 te = face->getTEOffset();

			if (!volume || volume->getNumVolumeFaces() <= te)
			{
				continue;
			}

			LLUUID mesh_id = volume->getParams().getSculptID();
			if (mesh_id.isNull())
			{
				continue;
			}

			const LLMeshSkinInfo* skin = gMeshRepo.getSkinInfo(mesh_id, vobj);
			if (!skin)
			{
				continue;
			}

			stop_glerror();

			const LLVolumeFace& vol_face = volume->getVolumeFace(te);
			updateRiggedFaceVertexBuffer(avatar, face, skin, volume, vol_face);
		}
	}
}

//static
void LLManip::rebuild(LLViewerObject* vobj)
{
	LLDrawable* drawablep = vobj->mDrawable;
	if (drawablep && drawablep->getVOVolume())
	{
		
		gPipeline.markRebuild(drawablep,LLDrawable::REBUILD_VOLUME, TRUE);
		drawablep->setState(LLDrawable::MOVE_UNDAMPED); // force to UNDAMPED
		drawablep->updateMove();
		LLSpatialGroup* group = drawablep->getSpatialGroup();
		if (group)
		{
			group->dirtyGeom();
		}
	}
}

//static
void LLManip::rebuild(LLViewerObject* vobj)
{
	LLDrawable* drawablep = vobj->mDrawable;
	if (drawablep && drawablep->getVOVolume())
	{
		gPipeline.markRebuild(drawablep,LLDrawable::REBUILD_VOLUME, TRUE);
		drawablep->setState(LLDrawable::MOVE_UNDAMPED); // force to UNDAMPED
		drawablep->updateMove();
		LLSpatialGroup* group = drawablep->getSpatialGroup();
		if (group)
		{
			group->dirtyGeom();
			gPipeline.markRebuild(group, TRUE);
		}

		LLViewerObject::const_child_list_t& child_list = vobj->getChildren();
		for (LLViewerObject::child_list_t::const_iterator iter = child_list.begin(), endIter = child_list.end();
			 iter != endIter; ++iter)
		{
			LLViewerObject* child = *iter;
			rebuild(child);
		}
	}
}

void LLParticlePartition::addGeometryCount(LLSpatialGroup* group, U32& vertex_count, U32& index_count)
{
	group->mBufferUsage = mBufferUsage;

	mFaceList.clear();

	LLViewerCamera* camera = LLViewerCamera::getInstance();
	for (LLSpatialGroup::element_iter i = group->getData().begin(); i != group->getData().end(); ++i)
	{
		LLDrawable* drawablep = *i;
		
		if (drawablep->isDead())
		{
			continue;
		}

		LLAlphaObject* obj = (LLAlphaObject*) drawablep->getVObj().get();
		obj->mDepth = 0.f;
		
		if (drawablep->isAnimating())
		{
			group->mBufferUsage = GL_STREAM_DRAW_ARB;
		}

		U32 count = 0;
		for (S32 j = 0; j < drawablep->getNumFaces(); ++j)
		{
			drawablep->updateFaceSize(j);

			LLFace* facep = drawablep->getFace(j);
			if ( !facep || !facep->hasGeometry())
			{
				continue;
			}
			
			count++;
			facep->mDistance = (facep->mCenterLocal - camera->getOrigin()) * camera->getAtAxis();
			obj->mDepth += facep->mDistance;
			
			mFaceList.push_back(facep);
			vertex_count += facep->getGeomCount();
			index_count += facep->getIndicesCount();
			llassert(facep->getIndicesCount() < 65536);
		}
		
		obj->mDepth /= count;
	}
}

void LLDrawPoolAvatar::updateRiggedFaceVertexBuffer(LLVOAvatar* avatar, LLFace* face, const LLMeshSkinInfo* skin, LLVolume* volume, const LLVolumeFace& vol_face)
{
	LLVector4a* weight = vol_face.mWeights;
	if (!weight)
	{
		return;
	}

	LLPointer<LLVertexBuffer> buffer = face->getVertexBuffer();
	LLDrawable* drawable = face->getDrawable();

	U32 data_mask = face->getRiggedVertexBufferDataMask();
	
	if (buffer.isNull() || 
		buffer->getTypeMask() != data_mask ||
		buffer->getNumVerts() != vol_face.mNumVertices ||
		buffer->getNumIndices() != vol_face.mNumIndices ||
		(drawable && drawable->isState(LLDrawable::REBUILD_ALL)))
	{
		if (drawable && drawable->isState(LLDrawable::REBUILD_ALL))
		{ //rebuild EVERY face in the drawable, not just this one, to avoid missing drawable wide rebuild issues
			for (S32 i = 0; i < drawable->getNumFaces(); ++i)
			{
				LLFace* facep = drawable->getFace(i);
				U32 face_data_mask = facep->getRiggedVertexBufferDataMask();
				if (face_data_mask)
				{
					LLPointer<LLVertexBuffer> cur_buffer = facep->getVertexBuffer();
					const LLVolumeFace& cur_vol_face = volume->getVolumeFace(i);
					getRiggedGeometry(facep, cur_buffer, face_data_mask, skin, volume, cur_vol_face);
				}
			}
			drawable->clearState(LLDrawable::REBUILD_ALL);

			buffer = face->getVertexBuffer();
		}
		else
		{ //just rebuild this face
			getRiggedGeometry(face, buffer, data_mask, skin, volume, vol_face);
		}
	}

	if (sShaderLevel <= 0 && face->mLastSkinTime < avatar->getLastSkinTime())
	{
		avatar->updateSoftwareSkinnedVertices(skin, weight, vol_face, buffer);
	}
}

void LLVOClouds::getGeometry(S32 te, 
							LLStrider<LLVector3>& verticesp, 
							LLStrider<LLVector3>& normalsp, 
							LLStrider<LLVector2>& texcoordsp, 
							LLStrider<LLColor4U>& colorsp, 
							LLStrider<U16>& indicesp)
{

	if (te >= mCloudGroupp->getNumPuffs())
	{
		return;
	}

	LLDrawable* drawable = mDrawable;
	LLFace *facep = drawable->getFace(te);

	if (!facep->hasGeometry())
	{
		return;
	}
	
	LLVector3 normal(0.f,0.f,-1.f);

	const LLCloudPuff &puff = mCloudGroupp->getPuff(te);
	S32 index_offset = facep->getGeomIndex();
	LLColor4 float_color(LLColor3(gSky.getSunDiffuseColor() + gSky.getSunAmbientColor()),puff.getAlpha());
	LLColor4U color;
	color.setVec(float_color);
	facep->setFaceColor(float_color);
		
	
	LLVector3 up;
	LLVector3 right;
	LLVector3 at;

	const LLVector3& puff_pos_agent = facep->mCenterLocal;
	LLVector2 uvs[4];

	uvs[0].setVec(0.f, 1.f);
	uvs[1].setVec(0.f, 0.f);
	uvs[2].setVec(1.f, 1.f);
	uvs[3].setVec(1.f, 0.f);

	LLVector3 vtx[4];

	at = LLViewerCamera::getInstance()->getAtAxis();
	right = at % LLVector3(0.f, 0.f, 1.f);
	right.normVec();
	up = right % at;
	up.normVec();
	right *= 0.5f*CLOUD_PUFF_WIDTH;
	up *= 0.5f*CLOUD_PUFF_HEIGHT;;
		
	*colorsp++ = color;
	*colorsp++ = color;
	*colorsp++ = color;
	*colorsp++ = color;

	vtx[0] = puff_pos_agent - right + up;
	vtx[1] = puff_pos_agent - right - up;
	vtx[2] = puff_pos_agent + right + up;
	vtx[3] = puff_pos_agent + right - up;

	verticesp->mV[3] = 0.f;
	*verticesp++  = vtx[0];
	verticesp->mV[3] = 0.f;
	*verticesp++  = vtx[1];
	verticesp->mV[3] = 0.f;
	*verticesp++  = vtx[2];
	verticesp->mV[3] = 0.f;
	*verticesp++  = vtx[3];

	*texcoordsp++ = uvs[0];
	*texcoordsp++ = uvs[1];
	*texcoordsp++ = uvs[2];
	*texcoordsp++ = uvs[3];

	*normalsp++   = normal;
	*normalsp++   = normal;
	*normalsp++   = normal;
	*normalsp++   = normal;

	*indicesp++ = index_offset + 0;
	*indicesp++ = index_offset + 1;
	*indicesp++ = index_offset + 2;

	*indicesp++ = index_offset + 1;
	*indicesp++ = index_offset + 3;
	*indicesp++ = index_offset + 2;
}