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* Created by Greg Ward on 07/11/2024. |
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*/ |
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#define DEBUG 1 // XXX temporary! |
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#include <ctype.h> |
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#include "platform.h" |
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#include "RpictSimulManager.h" |
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bool |
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RpictSimulManager::ComputePixel(int x, int y) |
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{ |
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static const SCOLOR scBlack = {0}; |
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DCHECK(doneMap.OffBitMap(x,y), |
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CONSISTENCY, "illegal pixel index in ComputPixel()"); |
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int i; |
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FVECT rodir[2]; |
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double hpos = (x+pixjitter())/TWidth(); |
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double vpos = (y+pixjitter())/THeight(); |
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double dlim = viewray(rodir[0], rodir[1], &tvw, hpos, vpos); |
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if (dlim < -FTINY) { // off view? |
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pacc.SetPixel(x, y, scBlack); |
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pacc.SetPixel(x, y, scblack); |
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doneMap.Set(x, y); |
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return true; |
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} |
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float dist[4]; |
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int i, j; |
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// assumes 4 corners are valid! |
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for (i = 4; i--; ) |
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for (i = 4; i--; ) { |
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DCHECK(!doneMap.Check(x+noff[i][0], y+noff[i][1]), |
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CONSISTENCY, "inclusion of bad pixel in FillSquare()"); |
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pacc.GetPixel(x+noff[i][0], y+noff[i][1], pval[i], &dist[i]); |
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|
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} |
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i = abs(noff[1][0]-noff[0][0]); |
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j = abs(noff[1][1]-noff[0][1]); // i==j for diamond fill |
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const int slen = (i > j) ? i : j; |
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|
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// helper function to set up quincunx sampling |
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static void |
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SetQuincunx(ABitMap2 *bmp2, int noff[4][2], const int spc, const bool odd) |
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SetQuincunx(ABitMap2 *bmp2, int noff[4][2], const int spc, bool odd, int x0, int y) |
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{ |
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for (int y = 0; y < bmp2->Height(); y += spc>>1) |
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for (int x = (odd^(y&1))*(spc>>1); x < bmp2->Width(); x += spc) |
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bmp2->Set(x, y); |
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// order neighbors CCW |
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if (odd) { |
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if (odd) { // order neighbors CCW |
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noff[0][0] = spc>>1; noff[0][1] = 0; |
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noff[1][0] = 0; noff[1][1] = spc>>1; |
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noff[2][0] = -(spc>>1); noff[2][1] = 0; |
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noff[2][0] = -(spc>>1); noff[2][1] = -(spc>>1); |
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noff[3][0] = spc>>1; noff[3][1] = -(spc>>1); |
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} |
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int nsteps; // non-negative range |
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if (x0 < -(spc>>1)) { |
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nsteps = (spc-1 - x0 - (spc>>1))/spc; |
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x0 += nsteps*spc; |
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} |
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if (y < 0) { // get past y==0 |
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nsteps = ((spc>>1)-1 - y)/(spc>>1); |
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y += nsteps*(spc>>1); |
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odd ^= nsteps&1; |
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} |
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while (y < bmp2->Height()) { |
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for (int x = x0 + odd*(spc>>1); x < bmp2->Width(); x += spc) |
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bmp2->Set(x, y); |
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y += spc>>1; |
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odd = !odd; |
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} |
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} |
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// Render (or finish rendering) current tile |
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bool |
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RpictSimulManager::RenderRect() |
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RpictSimulManager::RenderRect(const int x0, const int y0) |
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{ |
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if (!tvw.type || !Ready()) { |
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error(INTERNAL, "need octree and view for RenderRect()"); |
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int sp2 = ceil(log2((TWidth()>THeight() ? TWidth() : THeight()) - 1.)); |
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int layer = 0; |
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int x, y; |
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// fprintf(stderr, "Rendering %dx%d tile with psample=%d, maxdiff=%.3f ...\n", |
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// TWidth(), THeight(), psample, maxdiff); |
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while (sp2 > 0) { |
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ABitMap2 sampMap(TWidth(), THeight()); |
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int noff[4][2]; |
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if ((prCB != NULL) & (barPix == NULL)) |
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(*prCB)(100.*doneMap.SumTotal()/doneMap.Width()/doneMap.Height()); |
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SetQuincunx(&sampMap, noff, 1<<sp2, layer&1); |
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SetQuincunx(&sampMap, noff, 1<<sp2, layer&1, x0, y0); |
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sampMap -= doneSamples; // avoid resampling pixels |
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// Are we into adaptive sampling realm? |
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if (noff[0][0]*noff[0][0] + noff[0][1]*noff[0][1] < psample*psample) { |
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for (x = y = 0; sampMap.Find(&x, &y); x++) |
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if (BelowSampThresh(x, y, noff)) |
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sampMap.Reset(x, y); |
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#if 0 |
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XXX Need to fix directions for spreading!! |
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// spread sampling to neighbors... |
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const ABitMap2 origSampMap = sampMap; |
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for (x = 4; x--; ) { |
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sampMap |= stamp; |
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} // ...but don't resample what's done |
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sampMap -= doneSamples; |
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#endif |
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// interpolate smooth regions |
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fillMap -= sampMap; |
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for (x = y = 0; fillMap.Find(&x, &y); x++) |
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if (!ComputePixel(x, y)) |
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return false; |
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doneSamples |= sampMap; // samples now done or at least queued |
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// fprintf(stderr, "Sampled %ld pixels at (sp2,layer)=(%d,%d)\n", |
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// (long)sampMap.SumTotal(), sp2, layer); |
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// fprintf(stderr, "\t%ld pixels (%.3f%%) completed (+%ld in process)\n", |
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// (long)doneMap.SumTotal(), 100.*doneMap.SumTotal()/doneMap.Width()/doneMap.Height(), |
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// (long)(doneSamples.SumTotal()-doneMap.SumTotal())); |
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sp2 -= layer++ & 1; // next denser sampling |
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} |
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if (FlushQueue() < 0) // make sure we got everyone |
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pacc.SetColorSpace(RDTxyz); |
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else if (prims) |
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pacc.SetColorSpace(RDTrgb, prims); |
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return SetTile(tile) && RenderRect(); |
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|
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int x0=0, y0=0; |
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if (tile) { |
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x0 = -tile[0]*TWidth(); |
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y0 = -tile[1]*THeight(); |
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} |
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return SetTile(tile) && RenderRect(x0, y0); |
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} |
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// Same but store as common-exponent COLR or SCOLR |
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else if (prims) |
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pacc.SetColorSpace(RDTrgbe, prims); |
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return SetTile(tile) && RenderRect(); |
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int x0=0, y0=0; |
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if (tile) { |
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x0 = -tile[0]*TWidth(); |
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y0 = -tile[1]*THeight(); |
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} |
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return SetTile(tile) && RenderRect(x0, y0); |
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} |
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// Same but also use 16-bit encoded depth buffer |
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else if (prims) |
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pacc.SetColorSpace(RDTrgbe, prims); |
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|
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return SetTile(tile) && RenderRect(); |
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int x0=0, y0=0; |
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if (tile) { |
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x0 = -tile[0]*TWidth(); |
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y0 = -tile[1]*THeight(); |
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} |
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return SetTile(tile) && RenderRect(x0, y0); |
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} |
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// Back to float color with 16-bit depth |
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else if (prims) |
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pacc.SetColorSpace(RDTrgb, prims); |
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|
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return SetTile(tile) && RenderRect(); |
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int x0=0, y0=0; |
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if (tile) { |
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x0 = -tile[0]*TWidth(); |
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y0 = -tile[1]*THeight(); |
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} |
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return SetTile(tile) && RenderRect(x0, y0); |
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} |
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// Allocate a new render bar |
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sizeof(COLORV)*NC*TWidth()*(THeight()-v)); |
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memmove(barDepth, barDepth + TWidth()*v, |
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sizeof(float)*TWidth()*(THeight()-v)); |
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if (ytop < THeight()) { // mark what we won't do as finished |
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if (ytop < THeight()) // mark what we won't do as finished |
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doneMap.ClearRect(0, 0, TWidth(), THeight()-ytop, true); |
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memset(barPix, 0, sizeof(COLORV)*NC*TWidth()*(THeight()-ytop)); |
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memset(barDepth, 0, sizeof(float)*TWidth()*(THeight()-ytop)); |
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} |
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return true; |
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} |
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cropview(&ptvw, 0., double(ytop-THeight())/GetHeight(), |
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1., double(ytop)/GetHeight())) |
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ptvw.type = 0; |
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// set up spectral sampling |
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// update spectral sampling |
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if (setspectrsamp(CNDX, WLPART) <= 0) { |
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error(USER, "unsupported spectral sampling"); |
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return false; |
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} |
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int lastOut = ytop; // render down frame |
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while (ytop > 0) { |
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// fprintf(stderr, "At y=%d, source drawing %s...\n", ytop, parr ? "ON" : "OFF"); |
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if (prCB) |
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(*prCB)(100.*(GetHeight()-ytop)/GetHeight()); |
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if (!RenderRect()) // render this bar |
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if (!RenderRect(0, THeight()-ytop)) // render this bar |
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return false; |
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int nlines = lastOut - ytop + THeight(); |
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if (nlines > ytop) |
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{ |
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pdfp[0] = pdfp[1] = NULL; |
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if (!RDTcolorT(dt)) |
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error(INTERNAL, "botched color output type in NewOutput()"); |
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error(INTERNAL, "missing color output type in NewOutput()"); |
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if (NCSAMP == 3) { |
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if (RDTcolorT(dt) == RDTscolr) |
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dt = RDTnewCT(dt, prims==xyzprims ? RDTxyze : RDTrgbe); |
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sprintf(errmsg, "cannot open picture file '%s'", pfname); |
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error(SYSTEM, errmsg); |
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} |
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return RDTnone; // expected in parallel sequence |
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return RDTnone; // may be expected in sequence run |
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} |
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if (fd == 1) |
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pdfp[0] = stdout; |
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fputendian(pdfp[0]); |
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fputformat("float", pdfp[0]); |
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break; |
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default:; |
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default:; // pro forma - caught this above |
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} |
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fputc('\n', pdfp[0]); // flush picture header + resolution |
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fputc('\n', pdfp[0]); // flush picture header |
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if (fflush(pdfp[0]) == EOF) { |
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sprintf(errmsg, "cannot write header to picture '%s'", pfname); |
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error(SYSTEM, errmsg); |
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if (RDTdepthT(dt) == RDTdshort) |
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fprtresolu(GetWidth(), GetHeight(), pdfp[1]); |
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|
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const int bheight = (psample > 1) ? int(2*psample+.99) : 4; |
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const int vstep = bheight >> (psample > 1); |
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const int bheight = (psample > 1) ? int(4*psample+.99) : 8; |
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const int vstep = bheight >> (psample > 1); |
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NewBar(bheight); // render frame if we can |
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if (!RenderBelow(GetHeight(), vstep, pdfp[0], dt, pdfp[1])) { |
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fclose(pdfp[0]); fclose(pdfp[1]); |
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return RDTnone; |
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} |
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int bheight = (psample > 1) ? int(2*psample+.99) : 4; |
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int bheight = (psample > 1) ? int(4*psample+.99) : 8; |
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if (bheight > GetHeight()-doneScans) |
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bheight = GetHeight()-doneScans; |
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int vstep = bheight >> (psample > 1); |