khanat-opennel-code/code/nel/src/3d/ig_surface_light_build.cpp

244 lines
7.1 KiB
C++

// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
// Copyright (C) 2010 Winch Gate Property Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "std3d.h"
#include "nel/3d/ig_surface_light_build.h"
#include "nel/3d/scene_group.h"
using namespace NLMISC;
using namespace std;
namespace NL3D
{
// ***************************************************************************
void CIGSurfaceLightBuild::buildSunDebugMesh(CMesh::CMeshBuild &meshBuild,
CMeshBase::CMeshBaseBuild &meshBaseBuild, const CVector &deltaPos)
{
contReset(meshBuild);
contReset(meshBaseBuild);
meshBaseBuild.Materials.resize(1);
meshBaseBuild.Materials[0].initUnlit();
meshBaseBuild.Materials[0].setBlend(true);
meshBaseBuild.Materials[0].setBlendFunc(CMaterial::srcalpha, CMaterial::invsrcalpha);
meshBuild.VertexFlags= CVertexBuffer::PositionFlag | CVertexBuffer::PrimaryColorFlag;
// For all grids.
ItRetrieverGridMap it;
for(it= RetrieverGridMap.begin(); it!= RetrieverGridMap.end(); it++)
{
for(uint iSurf= 0; iSurf<it->second.Grids.size(); iSurf++)
{
CSurface &surface= it->second.Grids[iSurf];
// Resize vector.
uint wVert= surface.Width;
uint hVert= surface.Height;
uint vId0= (uint)meshBuild.Vertices.size();
// Allocate vertices / colors
meshBuild.Vertices.resize(vId0 + wVert*hVert);
vector<CRGBA> colors;
colors.resize(wVert*hVert);
// Build vertices pos and colors.
uint x, y;
for(y=0;y<hVert; y++)
{
for(x=0;x<wVert; x++)
{
uint vId= y*wVert + x;
// Copy Pos.
meshBuild.Vertices[vId0 + vId]= surface.Cells[vId].CenterPos + deltaPos;
// Copy Color.
uint8 col= surface.Cells[vId].SunContribution;
colors[vId].set(col, col, col, 128);
// Force Blue color, to simulate ambiant.
colors[vId].B= 128 + colors[vId].B/2;
// OutSurface => green is 128.
if(!surface.Cells[vId].InSurface)
colors[vId].G= 128;
}
}
// Build faces
addDebugMeshFaces(meshBuild, surface, vId0, colors);
}
}
}
// ***************************************************************************
void CIGSurfaceLightBuild::buildPLDebugMesh(CMesh::CMeshBuild &meshBuild, CMeshBase::CMeshBaseBuild &meshBaseBuild, const CVector &deltaPos, const CInstanceGroup &igOut)
{
contReset(meshBuild);
contReset(meshBaseBuild);
meshBaseBuild.Materials.resize(1);
meshBaseBuild.Materials[0].initUnlit();
meshBuild.VertexFlags= CVertexBuffer::PositionFlag | CVertexBuffer::PrimaryColorFlag;
// Get the number of lights in Ig.
uint numLight= (uint)igOut.getPointLightList().size();
numLight= raiseToNextPowerOf2(numLight);
uint idMultiplier= 256/ numLight;
// For all grids.
ItRetrieverGridMap it;
for(it= RetrieverGridMap.begin(); it!= RetrieverGridMap.end(); it++)
{
// get the final surface
CIGSurfaceLight::TRetrieverGridMap::const_iterator itIg=
igOut.getIGSurfaceLight().getRetrieverGridMap().find(it->first);
// If not found, abort
if( itIg== igOut.getIGSurfaceLight().getRetrieverGridMap().end() )
{
nlwarning("buildPLDebugMesh fails to find retriever '%d' in igOut", it->first);
continue;
}
else if( it->second.Grids.size()!=itIg->second.Grids.size() )
{
nlwarning("buildPLDebugMesh find retriever '%d' in igOut, but with bad size: excepting: %d, get: %d",
it->first, it->second.Grids.size(), itIg->second.Grids.size() );
continue;
}
// For all surface of the retriever.
for(uint iSurf= 0; iSurf<it->second.Grids.size(); iSurf++)
{
CSurface &surface= it->second.Grids[iSurf];
const CSurfaceLightGrid &igSurface= itIg->second.Grids[iSurf];
// Resize vector.
uint wVert= surface.Width;
uint hVert= surface.Height;
uint vId0= (uint)meshBuild.Vertices.size();
// Allocate vertices / colors
meshBuild.Vertices.resize(vId0 + wVert*hVert);
vector<CRGBA> colors;
colors.resize(wVert*hVert);
// Build vertices pos and colors.
uint x, y;
for(y=0;y<hVert; y++)
{
for(x=0;x<wVert; x++)
{
uint vId= y*wVert + x;
// Copy Pos.
meshBuild.Vertices[vId0 + vId]= surface.Cells[vId].CenterPos + deltaPos;
// init Color with idMultiplier in Blue (info!).
CRGBA &col= colors[vId];
col.set(0,0, idMultiplier, 255);
// store the compressed id of the light found in igOut.
nlassert( CSurfaceLightGrid::NumLightPerCorner>=2 );
uint idLight0= igSurface.Cells[vId].Light[0];
uint idLight1= igSurface.Cells[vId].Light[1];
// 255 means no light. If at least one light
if(idLight0<255)
{
uint v= (idLight0+1)*idMultiplier;
col.R= min(v, 255U);
// if second light
if(idLight1<255)
{
v= (idLight1+1)*idMultiplier;
col.G= min(v, 255U);
}
}
}
}
// Build faces
addDebugMeshFaces(meshBuild, surface, vId0, colors);
}
}
}
// ***************************************************************************
void CIGSurfaceLightBuild::addDebugMeshFaces(CMesh::CMeshBuild &meshBuild, CSurface &surface, uint vId0,
const std::vector<CRGBA> &colors)
{
// Resize faces.
uint wVert= surface.Width;
uint hVert= surface.Height;
uint wCell= wVert-1;
uint hCell= hVert-1;
// Allocate enough space for faces.
meshBuild.Faces.reserve(meshBuild.Faces.size() + wCell*hCell *2);
// Build faces
uint x,y;
for(y=0;y<hCell; y++)
{
for(x=0;x<wCell; x++)
{
uint v00= y*wVert + x;
uint v10= y*wVert + x+1;
uint v01= (y+1)*wVert + x;
uint v11= (y+1)*wVert + x+1;
// Skip this cell??
bool skip= false;
if(!surface.Cells[v00].InSurface && !surface.Cells[v00].Dilated) skip= true;
if(!surface.Cells[v10].InSurface && !surface.Cells[v10].Dilated) skip= true;
if(!surface.Cells[v01].InSurface && !surface.Cells[v01].Dilated) skip= true;
if(!surface.Cells[v11].InSurface && !surface.Cells[v11].Dilated) skip= true;
if(!skip)
{
// 1st triangle.
CMesh::CFace face0;
face0.MaterialId= 0;
face0.Corner[0].Vertex= vId0+ v00;
face0.Corner[0].Color= colors[v00];
face0.Corner[1].Vertex= vId0+ v10;
face0.Corner[1].Color= colors[v10];
face0.Corner[2].Vertex= vId0+ v01;
face0.Corner[2].Color= colors[v01];
// 2nd triangle.
CMesh::CFace face1;
face1.MaterialId= 0;
face1.Corner[0].Vertex= vId0+ v10;
face1.Corner[0].Color= colors[v10];
face1.Corner[1].Vertex= vId0+ v11;
face1.Corner[1].Color= colors[v11];
face1.Corner[2].Vertex= vId0+ v01;
face1.Corner[2].Color= colors[v01];
// Add 2 triangles
meshBuild.Faces.push_back(face0);
meshBuild.Faces.push_back(face1);
}
}
}
}
} // NL3D