llvowater.cpp
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- /**
- * @file llvowater.cpp
- * @brief LLVOWater class implementation
- *
- * $LicenseInfo:firstyear=2005&license=viewergpl$
- *
- * Copyright (c) 2005-2010, 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 "llvowater.h"
- #include "imageids.h"
- #include "llviewercontrol.h"
- #include "lldrawable.h"
- #include "lldrawpoolwater.h"
- #include "llface.h"
- #include "llsky.h"
- #include "llsurface.h"
- #include "llvosky.h"
- #include "llviewercamera.h"
- #include "llviewertexturelist.h"
- #include "llviewerregion.h"
- #include "llworld.h"
- #include "pipeline.h"
- #include "llspatialpartition.h"
- const BOOL gUseRoam = FALSE;
- ///////////////////////////////////
- template<class T> inline T LERP(T a, T b, F32 factor)
- {
- return a + (b - a) * factor;
- }
- const U32 N_RES_HALF = (N_RES >> 1);
- const U32 WIDTH = (N_RES * WAVE_STEP); //128.f //64 // width of wave tile, in meters
- const F32 WAVE_STEP_INV = (1. / WAVE_STEP);
- LLVOWater::LLVOWater(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp)
- : LLStaticViewerObject(id, LL_VO_WATER, regionp)
- {
- // Terrain must draw during selection passes so it can block objects behind it.
- mbCanSelect = FALSE;
- setScale(LLVector3(256.f, 256.f, 0.f)); // Hack for setting scale for bounding boxes/visibility.
- mUseTexture = TRUE;
- mIsEdgePatch = FALSE;
- }
- void LLVOWater::markDead()
- {
- LLViewerObject::markDead();
- }
- BOOL LLVOWater::isActive() const
- {
- return FALSE;
- }
- void LLVOWater::setPixelAreaAndAngle(LLAgent &agent)
- {
- mAppAngle = 50;
- mPixelArea = 500*500;
- }
- // virtual
- void LLVOWater::updateTextures()
- {
- }
- // Never gets called
- BOOL LLVOWater::idleUpdate(LLAgent &agent, LLWorld &world, const F64 &time)
- {
- /*if (mDead || !(gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_WATER)))
- {
- return TRUE;
- }
- if (mDrawable)
- {
- gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_VOLUME, TRUE);
- }*/
- return TRUE;
- }
- LLDrawable *LLVOWater::createDrawable(LLPipeline *pipeline)
- {
- pipeline->allocDrawable(this);
- mDrawable->setLit(FALSE);
- mDrawable->setRenderType(LLPipeline::RENDER_TYPE_WATER);
- LLDrawPoolWater *pool = (LLDrawPoolWater*) gPipeline.getPool(LLDrawPool::POOL_WATER);
- if (mUseTexture)
- {
- mDrawable->setNumFaces(1, pool, mRegionp->getLand().getWaterTexture());
- }
- else
- {
- mDrawable->setNumFaces(1, pool, LLWorld::getInstance()->getDefaultWaterTexture());
- }
- return mDrawable;
- }
- static LLFastTimer::DeclareTimer FTM_UPDATE_WATER("Update Water");
- BOOL LLVOWater::updateGeometry(LLDrawable *drawable)
- {
- LLFastTimer ftm(FTM_UPDATE_WATER);
- LLFace *face;
- if (drawable->getNumFaces() < 1)
- {
- LLDrawPoolWater *poolp = (LLDrawPoolWater*) gPipeline.getPool(LLDrawPool::POOL_WATER);
- drawable->addFace(poolp, NULL);
- }
- face = drawable->getFace(0);
- // LLVector2 uvs[4];
- // LLVector3 vtx[4];
- LLStrider<LLVector3> verticesp, normalsp;
- LLStrider<LLVector2> texCoordsp;
- LLStrider<U16> indicesp;
- U16 index_offset;
- S32 size = 16;
- S32 num_quads = size*size;
- face->setSize(4*num_quads, 6*num_quads);
- if (face->mVertexBuffer.isNull())
- {
- face->mVertexBuffer = new LLVertexBuffer(LLDrawPoolWater::VERTEX_DATA_MASK, GL_DYNAMIC_DRAW_ARB);
- face->mVertexBuffer->allocateBuffer(face->getGeomCount(), face->getIndicesCount(), TRUE);
- face->setIndicesIndex(0);
- face->setGeomIndex(0);
- }
- else
- {
- face->mVertexBuffer->resizeBuffer(face->getGeomCount(), face->getIndicesCount());
- }
-
- index_offset = face->getGeometry(verticesp,normalsp,texCoordsp, indicesp);
-
- LLVector3 position_agent;
- position_agent = getPositionAgent();
- face->mCenterAgent = position_agent;
- face->mCenterLocal = position_agent;
- S32 x, y;
- F32 step_x = getScale().mV[0] / size;
- F32 step_y = getScale().mV[1] / size;
- const LLVector3 up(0.f, step_y * 0.5f, 0.f);
- const LLVector3 right(step_x * 0.5f, 0.f, 0.f);
- const LLVector3 normal(0.f, 0.f, 1.f);
- F32 size_inv = 1.f / size;
- for (y = 0; y < size; y++)
- {
- for (x = 0; x < size; x++)
- {
- S32 toffset = index_offset + 4*(y*size + x);
- position_agent = getPositionAgent() - getScale() * 0.5f;
- position_agent.mV[VX] += (x + 0.5f) * step_x;
- position_agent.mV[VY] += (y + 0.5f) * step_y;
- *verticesp++ = position_agent - right + up;
- *verticesp++ = position_agent - right - up;
- *verticesp++ = position_agent + right + up;
- *verticesp++ = position_agent + right - up;
- *texCoordsp++ = LLVector2(x*size_inv, (y+1)*size_inv);
- *texCoordsp++ = LLVector2(x*size_inv, y*size_inv);
- *texCoordsp++ = LLVector2((x+1)*size_inv, (y+1)*size_inv);
- *texCoordsp++ = LLVector2((x+1)*size_inv, y*size_inv);
-
- *normalsp++ = normal;
- *normalsp++ = normal;
- *normalsp++ = normal;
- *normalsp++ = normal;
- *indicesp++ = toffset + 0;
- *indicesp++ = toffset + 1;
- *indicesp++ = toffset + 2;
- *indicesp++ = toffset + 1;
- *indicesp++ = toffset + 3;
- *indicesp++ = toffset + 2;
- }
- }
-
- face->mVertexBuffer->setBuffer(0);
- mDrawable->movePartition();
- LLPipeline::sCompiles++;
- return TRUE;
- }
- void LLVOWater::initClass()
- {
- }
- void LLVOWater::cleanupClass()
- {
- }
- void setVecZ(LLVector3& v)
- {
- v.mV[VX] = 0;
- v.mV[VY] = 0;
- v.mV[VZ] = 1;
- }
- void LLVOWater::setUseTexture(const BOOL use_texture)
- {
- mUseTexture = use_texture;
- }
- void LLVOWater::setIsEdgePatch(const BOOL edge_patch)
- {
- mIsEdgePatch = edge_patch;
- }
- void LLVOWater::updateSpatialExtents(LLVector3 &newMin, LLVector3& newMax)
- {
- LLVector3 pos = getPositionAgent();
- LLVector3 scale = getScale();
- newMin = pos - scale * 0.5f;
- newMax = pos + scale * 0.5f;
- mDrawable->setPositionGroup((newMin + newMax) * 0.5f);
- }
- U32 LLVOWater::getPartitionType() const
- {
- return LLViewerRegion::PARTITION_WATER;
- }
- LLWaterPartition::LLWaterPartition()
- : LLSpatialPartition(0, FALSE, 0)
- {
- mInfiniteFarClip = TRUE;
- mDrawableType = LLPipeline::RENDER_TYPE_WATER;
- mPartitionType = LLViewerRegion::PARTITION_WATER;
- }