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khanat-opennel-code/code/nel/src/3d/noise_3d.cpp
acemtp@users.sourceforge.net d5c601ffa5 initial version
2010-05-06 02:08:41 +02:00

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// 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/noise_3d.h"
#include "nel/3d/driver.h"
using namespace NLMISC;
namespace NL3D
{
// ------------------------------------------------------------------------------------------------
CNoise3d::CNoise3d (IDriver *pDriver)
{
_Mem = NULL;
_Mat = NULL;
_OffS = NULL;
_Driver = pDriver;
_NbVertices = 0;
_IsDriverSupportCloudSinglePass = pDriver->supportCloudRenderSinglePass();
}
// ------------------------------------------------------------------------------------------------
CNoise3d::~CNoise3d ()
{
// delete _Mem; // done by CTertureMem destructor
delete _Mat;
delete [] _OffS;
}
// ------------------------------------------------------------------------------------------------
void CNoise3d::init (uint32 w, uint32 h, uint32 d)
{
uint32 i;
if (_Mem != NULL)
return;
w = raiseToNextPowerOf2 (w);
h = raiseToNextPowerOf2 (h);
d = raiseToNextPowerOf2 (d);
if (w > 64) w = 64;
if (h > 64) h = 64;
if (d > 64) d = 64;
if (w < 4) w = 4;
if (h < 4) h = 4;
if (d < 4) d = 4;
_Width = w;
_Height = h;
_Depth = d;
uint32 vdpo2 = getPowerOf2(_Depth);
_NbSliceW = 1 << (vdpo2 / 2);
if ((vdpo2 & 1) != 0)
_NbSliceH = 2 << (vdpo2 / 2);
else
_NbSliceH = 1 << (vdpo2 / 2);
_ScaleW = 1.0f / _NbSliceW;
_ScaleH = 1.0f / _NbSliceH;
_Mem = new uint8[w*h*d];
// Create initial noise
for (i = 0; i < (w*h*d); i++)
_Mem[i] = (uint8)(256.0f*rand()/RAND_MAX);
_OffS = new CUV [_Depth];
for (i = 0; i < _Depth; i++)
{
_OffS[i].U = ((float)rand())/RAND_MAX;
_OffS[i].V = ((float)rand())/RAND_MAX;
}
_Tex = new CTextureMem (_Mem, _Width*_NbSliceW*_Height*_NbSliceH, true, false, _Width*_NbSliceW, _Height*_NbSliceH,
CBitmap::Alpha);
_Tex->setWrapS(ITexture::Repeat);
_Tex->setWrapT(ITexture::Repeat);
_Tex->setFilterMode(ITexture::Linear, ITexture::LinearMipMapOff);
_Tex->touch();
_Tex->generate();
if (_IsDriverSupportCloudSinglePass)
{
_Mat = new CMaterial();
_Mat->initUnlit();
_Mat->setShader (CMaterial::Cloud);
_Mat->setTexture (0, _Tex);
_Mat->setTexture (1, _Tex);
_Mat->setColor (CRGBA(255,255,255,255));
_Mat->setBlend (true);
_Mat->setBlendFunc(CMaterial::one, CMaterial::one);
_Mat->setZFunc (CMaterial::always);
_Mat->setZWrite (false);
_VertexBuffer.setVertexFormat (CVertexBuffer::PositionFlag | CVertexBuffer::PrimaryColorFlag |
CVertexBuffer::TexCoord0Flag | CVertexBuffer::TexCoord1Flag);
}
else
{
_Mat = new CMaterial();
_Mat->initUnlit();
_Mat->setShader (CMaterial::Normal);
_Mat->setTexture (0, _Tex);
_Mat->setColor (CRGBA(255,255,255,255));
_Mat->setBlend (true);
_Mat->setBlendFunc(CMaterial::one, CMaterial::one);
_Mat->setZFunc (CMaterial::always);
_Mat->setZWrite (false);
_VertexBuffer.setVertexFormat (CVertexBuffer::PositionFlag | CVertexBuffer::PrimaryColorFlag |
CVertexBuffer::TexCoord0Flag);
}
}
// ------------------------------------------------------------------------------------------------
void CNoise3d::render2passes (CQuadUV &qc, float wpos, float alpha)
{
// For the moment we do it in 2 passes : because wpos is a position between slice we have to do :
// [ At0*wpos+At1*(1-wpos) ] * alpha
// this is done like that :
// At0*[wpos*alpha] + At1*[(1-wpos)*alpha]
wpos = fmodf (wpos, 1.0f);
uint32 nSlice1 = (uint32)(wpos * _Depth), nSlice2;
if (nSlice1 == (_Depth-1))
nSlice2 = 0;
else
nSlice2 = 1 + nSlice1;
// If wpos is just on slice1 alpha must be one
float alphaPos = 1.0f - _Depth*(wpos - (((float)nSlice1) / _Depth));
if (_NbVertices == _VertexBuffer.getNumVertices())
{
_VertexBuffer.setNumVertices(_NbVertices+8);
}
CVertexBufferReadWrite vba;
_VertexBuffer.lock (vba);
uint32 nVSize = _VertexBuffer.getVertexSize ();
CVector *pVertices = vba.getVertexCoordPointer(_NbVertices);
*pVertices = qc.V0; pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
*pVertices = qc.V1; pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
*pVertices = qc.V2; pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
*pVertices = qc.V3; pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
*pVertices = qc.V0; pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
*pVertices = qc.V1; pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
*pVertices = qc.V2; pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
*pVertices = qc.V3;
CUV *pUV = vba.getTexCoordPointer (_NbVertices, 0);
*pUV = CUV(qc.Uv0.U*_ScaleW+_OffS[nSlice1].U, qc.Uv0.V*_ScaleH+_OffS[nSlice1].V);
pUV = (CUV*)( ((uint8*)pUV) + nVSize );
*pUV = CUV(qc.Uv1.U*_ScaleW+_OffS[nSlice1].U, qc.Uv1.V*_ScaleH+_OffS[nSlice1].V);
pUV = (CUV*)( ((uint8*)pUV) + nVSize );
*pUV = CUV(qc.Uv2.U*_ScaleW+_OffS[nSlice1].U, qc.Uv2.V*_ScaleH+_OffS[nSlice1].V);
pUV = (CUV*)( ((uint8*)pUV) + nVSize );
*pUV = CUV(qc.Uv3.U*_ScaleW+_OffS[nSlice1].U, qc.Uv3.V*_ScaleH+_OffS[nSlice1].V);
pUV = (CUV*)( ((uint8*)pUV) + nVSize );
*pUV = CUV(qc.Uv0.U*_ScaleW+_OffS[nSlice2].U, qc.Uv0.V*_ScaleH+_OffS[nSlice2].V);
pUV = (CUV*)( ((uint8*)pUV) + nVSize );
*pUV = CUV(qc.Uv1.U*_ScaleW+_OffS[nSlice2].U, qc.Uv1.V*_ScaleH+_OffS[nSlice2].V);
pUV = (CUV*)( ((uint8*)pUV) + nVSize );
*pUV = CUV(qc.Uv2.U*_ScaleW+_OffS[nSlice2].U, qc.Uv2.V*_ScaleH+_OffS[nSlice2].V);
pUV = (CUV*)( ((uint8*)pUV) + nVSize );
*pUV = CUV(qc.Uv3.U*_ScaleW+_OffS[nSlice2].U, qc.Uv3.V*_ScaleH+_OffS[nSlice2].V);
uint8 finalAlpha = (uint8)(255*alphaPos*alpha);
// todo hulud d3d vertex color RGBA / BGRA
uint8 *pColA = (uint8*)vba.getColorPointer(_NbVertices) + 3;
*pColA = finalAlpha; pColA = ((uint8*)pColA) + nVSize;
*pColA = finalAlpha; pColA = ((uint8*)pColA) + nVSize;
*pColA = finalAlpha; pColA = ((uint8*)pColA) + nVSize;
*pColA = finalAlpha; pColA = ((uint8*)pColA) + nVSize;
finalAlpha = (uint8)(255*(1.0f-alphaPos)*alpha);
*pColA = finalAlpha; pColA = ((uint8*)pColA) + nVSize;
*pColA = finalAlpha; pColA = ((uint8*)pColA) + nVSize;
*pColA = finalAlpha; pColA = ((uint8*)pColA) + nVSize;
*pColA = finalAlpha;
_NbVertices += 8;
}
// ------------------------------------------------------------------------------------------------
void CNoise3d::render (CQuadUV &qc, float wpos, float intensity)
{
// [ At0*wpos+At1*(1-wpos) ] * alpha
if (!_IsDriverSupportCloudSinglePass)
{
render2passes (qc, wpos, intensity);
return;
}
_Intensity = intensity;
wpos = wpos - floorf (wpos);
uint32 nSlice1 = (uint32)(wpos * _Depth), nSlice2;
if (nSlice1 == (_Depth-1))
nSlice2 = 0;
else
nSlice2 = 1 + nSlice1;
// If wpos is just on slice1 alpha must be one
float alphaPos = 1.0f - _Depth*(wpos - (((float)nSlice1) / _Depth));
uint8 nAlphaPos = (uint8)(255*alphaPos);
uint32 nVSize = _VertexBuffer.getVertexSize ();
if (_NbVertices == _VertexBuffer.getNumVertices())
{
_VertexBuffer.setNumVertices (_NbVertices+4);
}
CVertexBufferReadWrite vba;
_VertexBuffer.lock (vba);
CVector *pVertices = vba.getVertexCoordPointer(_NbVertices);
*pVertices = qc.V0; pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
*pVertices = qc.V1; pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
*pVertices = qc.V2; pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
*pVertices = qc.V3;
CUV *pUV = vba.getTexCoordPointer (_NbVertices, 0);
*pUV = CUV(qc.Uv0.U/_NbSliceW+_OffS[nSlice1].U, qc.Uv0.V*_ScaleH+_OffS[nSlice1].V);
pUV = (CUV*)( ((uint8*)pUV) + nVSize );
*pUV = CUV(qc.Uv1.U/_NbSliceW+_OffS[nSlice1].U, qc.Uv1.V*_ScaleH+_OffS[nSlice1].V);
pUV = (CUV*)( ((uint8*)pUV) + nVSize );
*pUV = CUV(qc.Uv2.U/_NbSliceW+_OffS[nSlice1].U, qc.Uv2.V*_ScaleH+_OffS[nSlice1].V);
pUV = (CUV*)( ((uint8*)pUV) + nVSize );
*pUV = CUV(qc.Uv3.U/_NbSliceW+_OffS[nSlice1].U, qc.Uv3.V*_ScaleH+_OffS[nSlice1].V);
pUV = vba.getTexCoordPointer (_NbVertices, 1);
*pUV = CUV(qc.Uv0.U*_ScaleW+_OffS[nSlice2].U, qc.Uv0.V*_ScaleH+_OffS[nSlice2].V);
pUV = (CUV*)( ((uint8*)pUV) + nVSize );
*pUV = CUV(qc.Uv1.U*_ScaleW+_OffS[nSlice2].U, qc.Uv1.V*_ScaleH+_OffS[nSlice2].V);
pUV = (CUV*)( ((uint8*)pUV) + nVSize );
*pUV = CUV(qc.Uv2.U*_ScaleW+_OffS[nSlice2].U, qc.Uv2.V*_ScaleH+_OffS[nSlice2].V);
pUV = (CUV*)( ((uint8*)pUV) + nVSize );
*pUV = CUV(qc.Uv3.U*_ScaleW+_OffS[nSlice2].U, qc.Uv3.V*_ScaleH+_OffS[nSlice2].V);
// todo hulud d3d vertex color RGBA / BGRA
uint8 *pColA = (uint8*)vba.getColorPointer(_NbVertices) + 3;
*pColA = nAlphaPos; pColA = ((uint8*)pColA) + nVSize;
*pColA = nAlphaPos; pColA = ((uint8*)pColA) + nVSize;
*pColA = nAlphaPos; pColA = ((uint8*)pColA) + nVSize;
*pColA = nAlphaPos;
_NbVertices += 4;
}
// ------------------------------------------------------------------------------------------------
void CNoise3d::renderGrid (uint32 nbw, uint32 nbh, uint32 w, uint32 h,
float UStart, float VStart, float WStart, float dU, float dV, float dW, float intensity)
{
if (!_IsDriverSupportCloudSinglePass)
{
renderGrid2passes (nbw, nbh, w, h, UStart, VStart, WStart, dU, dV, dW, intensity);
return;
}
_Intensity = intensity;
uint32 i, j, nSlice1, nSlice2;
float wpos, oneOverNbWNbH = 1.0f / (nbw*nbh);
CVector *pVertices;
CUV *pUV0, *pUV1;
uint8 *pColA, nAlphaPos;
uint32 nVSize = _VertexBuffer.getVertexSize ();
if (_VertexBuffer.getNumVertices() < nbw*nbh*4)
{
_VertexBuffer.setNumVertices (nbw*nbh*4);
}
dU = (UStart+dU) /_NbSliceW;
dV = (VStart+dV) /_NbSliceH;
UStart = UStart / _NbSliceW;
VStart = VStart / _NbSliceH;
CVertexBufferReadWrite vba;
_VertexBuffer.lock (vba);
pVertices = vba.getVertexCoordPointer(0);
pUV0 = vba.getTexCoordPointer (0, 0);
pUV1 = vba.getTexCoordPointer (0, 1);
// todo hulud d3d vertex color RGBA / BGRA
pColA = (uint8*)vba.getColorPointer(0) + 3;
for (j = 0; j < nbh; ++j)
{
for (i = 0; i < nbw; ++i)
{
wpos = (float)WStart+dW*(i+(float)j*nbw)*oneOverNbWNbH;
wpos = wpos - floorf (wpos);
nSlice1 = (uint32)(wpos * _Depth);
if (nSlice1 == (_Depth-1))
nSlice2 = 0;
else
nSlice2 = 1 + nSlice1;
// If wpos is just on slice1 alpha must be one
nAlphaPos = (uint8)( 255*(1.0f - _Depth*(wpos - (((float)nSlice1) / _Depth))) );
*pVertices = CVector((float)i*w, (float)j*h, 0.0f); pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
*pVertices = CVector((float)(i+1)*w, (float)j*h, 0.0f); pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
*pVertices = CVector((float)(i+1)*w, (float)(j+1)*h, 0.0f); pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
*pVertices = CVector((float)i*w, (float)(j+1)*h, 0.0f); pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
pUV0->U = UStart+_OffS[nSlice1].U; pUV0->V = VStart+_OffS[nSlice1].V; pUV0 = (CUV*)( ((uint8*)pUV0) + nVSize );
pUV0->U = dU+_OffS[nSlice1].U; pUV0->V = VStart+_OffS[nSlice1].V; pUV0 = (CUV*)( ((uint8*)pUV0) + nVSize );
pUV0->U = dU+_OffS[nSlice1].U; pUV0->V = dV+_OffS[nSlice1].V; pUV0 = (CUV*)( ((uint8*)pUV0) + nVSize );
pUV0->U = UStart+_OffS[nSlice1].U; pUV0->V = dV+_OffS[nSlice1].V; pUV0 = (CUV*)( ((uint8*)pUV0) + nVSize );
pUV1->U = UStart+_OffS[nSlice2].U; pUV1->V = VStart+_OffS[nSlice2].V; pUV1 = (CUV*)( ((uint8*)pUV1) + nVSize );
pUV1->U = dU+_OffS[nSlice2].U; pUV1->V = VStart+_OffS[nSlice2].V; pUV1 = (CUV*)( ((uint8*)pUV1) + nVSize );
pUV1->U = dU+_OffS[nSlice2].U; pUV1->V = dV+_OffS[nSlice2].V; pUV1 = (CUV*)( ((uint8*)pUV1) + nVSize );
pUV1->U = UStart+_OffS[nSlice2].U; pUV1->V = dV+_OffS[nSlice2].V; pUV1 = (CUV*)( ((uint8*)pUV1) + nVSize );
*pColA = nAlphaPos; pColA = ((uint8*)pColA) + nVSize;
*pColA = nAlphaPos; pColA = ((uint8*)pColA) + nVSize;
*pColA = nAlphaPos; pColA = ((uint8*)pColA) + nVSize;
*pColA = nAlphaPos; pColA = ((uint8*)pColA) + nVSize;
}
}
_NbVertices = nbw*nbh*4;
}
// ------------------------------------------------------------------------------------------------
void CNoise3d::renderGrid2passes (uint32 nbw, uint32 nbh, uint32 w, uint32 h,
float UStart, float VStart, float WStart, float dU, float dV, float dW, float intensity)
{
uint32 i, j, nSlice1, nSlice2;
float wpos, oneOverNbWNbH = 1.0f / (nbw*nbh);
CVector *pVertices;
CUV *pUV0;
uint8 *pColA, nFinalAlpha;
uint32 nVSize = _VertexBuffer.getVertexSize ();
if (_VertexBuffer.getNumVertices() < 2*nbw*nbh*4)
{
_VertexBuffer.setNumVertices (2*nbw*nbh*4);
}
dU = (UStart+dU) /_NbSliceW;
dV = (VStart+dV) /_NbSliceH;
UStart = UStart / _NbSliceW;
VStart = VStart / _NbSliceH;
CVertexBufferReadWrite vba;
_VertexBuffer.lock (vba);
pVertices = vba.getVertexCoordPointer(0);
pUV0 = vba.getTexCoordPointer (0, 0);
// todo hulud d3d vertex color RGBA / BGRA
pColA = (uint8*)vba.getColorPointer(0) + 3;
for (j = 0; j < nbh; ++j)
{
for (i = 0; i < nbw; ++i)
{
wpos = (float)WStart+dW*(i+(float)j*nbw)*oneOverNbWNbH;
wpos = fmodf (wpos, 1.0f);
nSlice1 = (uint32)(wpos * _Depth);
if (nSlice1 == (_Depth-1))
nSlice2 = 0;
else
nSlice2 = 1 + nSlice1;
// If wpos is just on slice1 alpha must be one
float alphaPos = 1.0f - _Depth*(wpos - (((float)nSlice1) / _Depth));
*pVertices = CVector((float)i*w, (float)j*h, 0.0f); pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
*pVertices = CVector((float)(i+1)*w, (float)j*h, 0.0f); pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
*pVertices = CVector((float)(i+1)*w, (float)(j+1)*h, 0.0f); pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
*pVertices = CVector((float)i*w, (float)(j+1)*h, 0.0f); pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
*pVertices = CVector((float)i*w, (float)j*h, 0.0f); pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
*pVertices = CVector((float)(i+1)*w, (float)j*h, 0.0f); pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
*pVertices = CVector((float)(i+1)*w, (float)(j+1)*h, 0.0f); pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
*pVertices = CVector((float)i*w, (float)(j+1)*h, 0.0f); pVertices = (CVector*)( ((uint8*)pVertices) + nVSize );
pUV0->U = UStart+_OffS[nSlice1].U; pUV0->V = VStart+_OffS[nSlice1].V; pUV0 = (CUV*)( ((uint8*)pUV0) + nVSize );
pUV0->U = dU+_OffS[nSlice1].U; pUV0->V = VStart+_OffS[nSlice1].V; pUV0 = (CUV*)( ((uint8*)pUV0) + nVSize );
pUV0->U = dU+_OffS[nSlice1].U; pUV0->V = dV+_OffS[nSlice1].V; pUV0 = (CUV*)( ((uint8*)pUV0) + nVSize );
pUV0->U = UStart+_OffS[nSlice1].U; pUV0->V = dV+_OffS[nSlice1].V; pUV0 = (CUV*)( ((uint8*)pUV0) + nVSize );
pUV0->U = UStart+_OffS[nSlice2].U; pUV0->V = VStart+_OffS[nSlice2].V; pUV0 = (CUV*)( ((uint8*)pUV0) + nVSize );
pUV0->U = dU+_OffS[nSlice2].U; pUV0->V = VStart+_OffS[nSlice2].V; pUV0 = (CUV*)( ((uint8*)pUV0) + nVSize );
pUV0->U = dU+_OffS[nSlice2].U; pUV0->V = dV+_OffS[nSlice2].V; pUV0 = (CUV*)( ((uint8*)pUV0) + nVSize );
pUV0->U = UStart+_OffS[nSlice2].U; pUV0->V = dV+_OffS[nSlice2].V; pUV0 = (CUV*)( ((uint8*)pUV0) + nVSize );
nFinalAlpha = (uint8)(255*alphaPos*intensity);
*pColA = nFinalAlpha; pColA = ((uint8*)pColA) + nVSize;
*pColA = nFinalAlpha; pColA = ((uint8*)pColA) + nVSize;
*pColA = nFinalAlpha; pColA = ((uint8*)pColA) + nVSize;
*pColA = nFinalAlpha; pColA = ((uint8*)pColA) + nVSize;
nFinalAlpha = (uint8)(255*(1.0f-alphaPos)*intensity);
*pColA = nFinalAlpha; pColA = ((uint8*)pColA) + nVSize;
*pColA = nFinalAlpha; pColA = ((uint8*)pColA) + nVSize;
*pColA = nFinalAlpha; pColA = ((uint8*)pColA) + nVSize;
*pColA = nFinalAlpha; pColA = ((uint8*)pColA) + nVSize;
}
}
_NbVertices = 2*4*nbw*nbh;
}
// ------------------------------------------------------------------------------------------------
void CNoise3d::flush ()
{
if (!_IsDriverSupportCloudSinglePass)
{
flush2passes ();
return;
}
_Mat->setColor(CRGBA(0,0,0,(uint8)(255*_Intensity)));
_Driver->activeVertexBuffer (_VertexBuffer);
_Driver->renderRawQuads (*_Mat, 0, _NbVertices/4);
_NbVertices = 0;
}
// ------------------------------------------------------------------------------------------------
void CNoise3d::flush2passes ()
{
_Driver->activeVertexBuffer (_VertexBuffer);
_Driver->renderRawQuads (*_Mat, 0, _NbVertices/4);
_NbVertices = 0;
}
// Accessors
// ------------------------------------------------------------------------------------------------
uint32 CNoise3d::getWidth ()
{
return _Width;
}
// ------------------------------------------------------------------------------------------------
uint32 CNoise3d::getHeight ()
{
return _Height;
}
// ------------------------------------------------------------------------------------------------
uint32 CNoise3d::getDepth ()
{
return _Depth;
}
} // namespace NL3D
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