bool VTerrainSectorRenderer::SaveRenderTarget(VTerrainSector* pSector, VisRenderableTexture_cl *pTex, const char *szFilePath)
{
VASSERT(pSector);
// since the functions below require an absolute path, we somehow need to get from a relative path to an absolute path
// opening a file and getting its then final path is the only way, that I found, to accomplish this
char szAbsFilename[FS_MAX_PATH];
// create the file and convert the relative path into an absolute path
IVFileOutStream* pStream = Vision::File.Create (szFilePath);
if (!pStream)
return false;
strcpy (szAbsFilename, pStream->GetFileName());
pStream->Close();
VRCSHelper::RCSEditFile(szAbsFilename);
if (pTex==NULL)
return false;
int sx = pTex->GetTextureWidth();
int sy = pTex->GetTextureHeight();
Image_cl image;
VMemoryTempBuffer<512*512*3> buffer(sx*sy*3);
UBYTE* pDest = (UBYTE*)buffer.GetBuffer();
Vision::Game.WriteScreenToBuffer(0, 0, sx, sy, pDest, pTex);
if(Vision::Renderer.GetSRGBMode() == V_SRGB_ASSUME_FOR_DIFFUSE)
{
for (int i = 0; i < sx*sy*3; ++i)
pDest[i] = (UBYTE) (LinearToSrgb (((float) pDest[i]) / 255.0f) * 255.0f);
}
// The terrain sector renderer leaves a border area around the sector being rendered,
// this is required to ensure proper texture filtering on sector edges. Into this border area
// the neighbor sectors are rendered to, but not each sector has a neighbor on each side, thus the next
// step fills all the pixels where nothing has been rendered to.
FillBorders(pSector, sx, sy, m_iBorderWidth, pDest);
image.AddColorMap(sx,sy,COLORDEPTH_24BPP,pDest);
int iSavingResult = -1;
if (VFileHelper::HasExtension(szAbsFilename,"BMP"))
iSavingResult = image.SaveBMP(szAbsFilename);
else if (VFileHelper::HasExtension(szAbsFilename,"JPG"))
iSavingResult = image.SaveJPEG(szAbsFilename);
else if (VFileHelper::HasExtension(szAbsFilename,"JPEG"))
iSavingResult = image.SaveJPEG(szAbsFilename);
else if (VFileHelper::HasExtension(szAbsFilename,"TGA"))
iSavingResult = image.SaveTGA(szAbsFilename);
else if (VFileHelper::HasExtension(szAbsFilename,"DDS"))
iSavingResult = image.SaveUncompressedDDS(szAbsFilename);
VRCSHelper::RCSAddFile(szAbsFilename, true /* Binary file */);
return iSavingResult == 0;
}
void Fluid::ComputePressureField(
int maxIterations,
const View<float, 1>& velocitiesDivergence,
View<float, 1>* pressureField) const {
const float alpha = -_gridScale * _gridScale;
const float beta = 4.0f;
// TODO: What would be a meaningfull initial guess?
FillImage(0.0f, pressureField);
FillBorders(1.0f, velocitiesDivergence, pressureField);
_pressureSolver.Solve(alpha, beta, maxIterations, velocitiesDivergence, pressureField);
}
void Fluid::Diffuse(
float timeStep,
int maxIterations,
const View2f& velocities,
View2f* velocitiesDiffused) const {
const float alpha = (_gridScale * _gridScale) / (_viscosity * timeStep);
const float beta = 4.0f + alpha;
// TODO: What would be a meaningfull initial guess ?
FillImage(Vector2(0.0f, 0.0f), velocitiesDiffused);
FillBorders(-1.0f, velocities, velocitiesDiffused);
_diffusionSolver.Solve(alpha, beta, maxIterations, velocities, velocitiesDiffused);
}
