home *** CD-ROM | disk | FTP | other *** search
- #include "qrad.h"
-
- ////////////////////////////
- // begin old vismat.c
- //
- #define HALFBIT
-
- // =====================================================================================
- //
- // VISIBILITY MATRIX
- // Determine which patches can see each other
- // Use the PVS to accelerate if available
- //
- // =====================================================================================
-
- static byte* s_vismatrix;
-
-
-
- #ifdef HLRAD_HULLU
- // =====================================================================================
- // OPACITY ARRAY
- // =====================================================================================
-
- typedef struct {
- unsigned bitpos;
- vec3_t transparency;
- } transparency_t;
-
- static transparency_t *s_transparency_list = NULL;
- static unsigned long s_transparency_count = 0;
- static unsigned long s_max_transparency_count=0;
-
- static void FindOpacity(const unsigned bitpos, vec3_t &out)
- {
- for(unsigned long i = 0; i < s_transparency_count; i++)
- {
- if( s_transparency_list[i].bitpos == bitpos )
- {
- VectorCopy(s_transparency_list[i].transparency, out);
- return;
- }
- }
- VectorFill(out, 1.0);
- }
-
- #endif /*HLRAD_HULLU*/
-
- // =====================================================================================
- // TestPatchToFace
- // Sets vis bits for all patches in the face
- // =====================================================================================
- static void TestPatchToFace(const unsigned patchnum, const int facenum, const int head, const unsigned int bitpos)
- {
- patch_t* patch = &g_patches[patchnum];
- patch_t* patch2 = g_face_patches[facenum];
-
- // if emitter is behind that face plane, skip all patches
-
- if (patch2)
- {
- const dplane_t* plane2 = getPlaneFromFaceNumber(facenum);
-
- if (DotProduct(patch->origin, plane2->normal) > (PatchPlaneDist(patch2) + MINIMUM_PATCH_DISTANCE))
- {
- // we need to do a real test
- const dplane_t* plane = getPlaneFromFaceNumber(patch->faceNumber);
-
- for (; patch2; patch2 = patch2->next)
- {
- unsigned m = patch2 - g_patches;
-
- #ifdef HLRAD_HULLU
- vec3_t transparency = {1.0, 1.0, 1.0};
- #endif
-
- // check vis between patch and patch2
- // if bit has not already been set
- // && v2 is not behind light plane
- // && v2 is visible from v1
- if (m > patchnum
- && (DotProduct(patch2->origin, plane->normal) > (PatchPlaneDist(patch) + MINIMUM_PATCH_DISTANCE))
- && (TestLine_r(head, patch->origin, patch2->origin) == CONTENTS_EMPTY)
- #ifdef HLRAD_HULLU
- && (!TestSegmentAgainstOpaqueList(patch->origin, patch2->origin, transparency)))
- #else
- && (!TestSegmentAgainstOpaqueList(patch->origin, patch2->origin)))
- #endif
- {
- //Log("SDF::3\n");
-
- // patchnum can see patch m
- unsigned bitset = bitpos + m;
-
- #ifdef HLRAD_HULLU
- // transparency face fix table
- // TODO: this method makes MakeScale extreamly slow.. find new one
-
- if(g_customshadow_with_bouncelight && fabs(VectorAvg(transparency) - 1.0) < 0.001)
- {
- while(s_transparency_count >= s_max_transparency_count)
- {
- //new size
- unsigned long old_max = s_max_transparency_count;
- s_max_transparency_count += 128;
-
- //realloc
- s_transparency_list = (transparency_t*)realloc(s_transparency_list, s_max_transparency_count * sizeof(transparency_t));
-
- // clean new memory
- memset(&s_transparency_list[old_max], 0, sizeof(transparency_t) * 128);
- }
-
- //add to array
- VectorCopy(transparency, s_transparency_list[s_transparency_count].transparency);
- s_transparency_list[s_transparency_count].bitpos = bitset;
-
- s_transparency_count++;
- }
- #endif /*HLRAD_HULLU*/
-
- s_vismatrix[bitset >> 3] |= 1 << (bitset & 7);
- }
- }
- }
- }
- }
-
- // =====================================================================================
- // BuildVisRow
- // Calc vis bits from a single patch
- // =====================================================================================
- static void BuildVisRow(const int patchnum, byte* pvs, const int head, const unsigned int bitpos)
- {
- int j, k, l;
- byte face_tested[MAX_MAP_FACES];
- dleaf_t* leaf;
-
- memset(face_tested, 0, g_numfaces);
-
- // leaf 0 is the solid leaf (skipped)
- for (j = 1, leaf = g_dleafs + 1; j < g_numleafs; j++, leaf++)
- {
- if (!(pvs[(j - 1) >> 3] & (1 << ((j - 1) & 7))))
- continue; // not in pvs
- for (k = 0; k < leaf->nummarksurfaces; k++)
- {
- l = g_dmarksurfaces[leaf->firstmarksurface + k];
-
- // faces can be marksurfed by multiple leaves, but
- // don't bother testing again
- if (face_tested[l])
- continue;
- face_tested[l] = 1;
-
- TestPatchToFace(patchnum, l, head, bitpos);
- }
- }
- }
-
- // =====================================================================================
- // BuildVisLeafs
- // This is run by multiple threads
- // =====================================================================================
- #ifdef SYSTEM_WIN32
- #pragma warning(push)
- #pragma warning(disable: 4100) // unreferenced formal parameter
- #endif
- static void BuildVisLeafs(int threadnum)
- {
- int i;
- int lface, facenum, facenum2;
- byte pvs[(MAX_MAP_LEAFS + 7) / 8];
- dleaf_t* srcleaf;
- dleaf_t* leaf;
- patch_t* patch;
- int head;
- unsigned bitpos;
- unsigned patchnum;
-
- while (1)
- {
- //
- // build a minimal BSP tree that only
- // covers areas relevent to the PVS
- //
- i = GetThreadWork();
- if (i == -1)
- break;
- i++; // skip leaf 0
- srcleaf = &g_dleafs[i];
- DecompressVis(&g_dvisdata[srcleaf->visofs], pvs, sizeof(pvs));
- head = 0;
-
- //
- // go through all the faces inside the
- // leaf, and process the patches that
- // actually have origins inside
- //
- for (lface = 0; lface < srcleaf->nummarksurfaces; lface++)
- {
- facenum = g_dmarksurfaces[srcleaf->firstmarksurface + lface];
- for (patch = g_face_patches[facenum]; patch; patch = patch->next)
- {
- leaf = PointInLeaf(patch->origin);
- if (leaf != srcleaf)
- continue;
-
- patchnum = patch - g_patches;
-
- #ifdef HALFBIT
- bitpos = patchnum * g_num_patches - (patchnum * (patchnum + 1)) / 2;
- #else
- bitpos = patchnum * g_num_patches;
- #endif
- // build to all other world leafs
- BuildVisRow(patchnum, pvs, head, bitpos);
-
- // build to bmodel faces
- if (g_nummodels < 2)
- continue;
- for (facenum2 = g_dmodels[1].firstface; facenum2 < g_numfaces; facenum2++)
- TestPatchToFace(patchnum, facenum2, head, bitpos);
- }
- }
-
- }
- }
-
- #ifdef SYSTEM_WIN32
- #pragma warning(pop)
- #endif
-
- // =====================================================================================
- // BuildVisMatrix
- // =====================================================================================
- static void BuildVisMatrix()
- {
- int c;
-
- #ifdef HALFBIT
- c = ((g_num_patches + 1) * (g_num_patches + 1)) / 16;
- #else
- c = g_num_patches * ((g_num_patches + 7) / 8);
- #endif
-
- Log("%-20s: %5.1f megs\n", "visibility matrix", c / (1024 * 1024.0));
-
- s_vismatrix = (byte*)AllocBlock(c);
-
- if (!s_vismatrix)
- {
- Log("Failed to allocate s_vismatrix");
- hlassume(s_vismatrix != NULL, assume_NoMemory);
- }
-
- NamedRunThreadsOn(g_numleafs - 1, g_estimate, BuildVisLeafs);
- }
-
- static void FreeVisMatrix()
- {
- if (s_vismatrix)
- {
- if (FreeBlock(s_vismatrix))
- {
- s_vismatrix = NULL;
- }
- else
- {
- Warning("Unable to free s_vismatrix");
- }
- }
-
- #ifdef HLRAD_HULLU
- if(s_transparency_list)
- {
- free(s_transparency_list);
- s_transparency_list = NULL;
- }
- s_transparency_count = s_max_transparency_count = 0;
- #endif
-
- }
-
- // =====================================================================================
- // CheckVisBit
- // =====================================================================================
- #ifdef HLRAD_HULLU
- static bool CheckVisBitVismatrix(unsigned p1, unsigned p2, vec3_t &transparency_out)
- #else
- static bool CheckVisBitVismatrix(unsigned p1, unsigned p2)
- #endif
- {
- unsigned bitpos;
-
- if (p1 > p2)
- {
- const unsigned a = p1;
- const unsigned b = p2;
- p1 = b;
- p2 = a;
- }
-
- if (p1 > g_num_patches)
- {
- Warning("in CheckVisBit(), p1 > num_patches");
- }
- if (p2 > g_num_patches)
- {
- Warning("in CheckVisBit(), p2 > num_patches");
- }
-
- #ifdef HALFBIT
- bitpos = p1 * g_num_patches - (p1 * (p1 + 1)) / 2 + p2;
- #else
- bitpos = p1 * g_num_patches + p2;
- #endif
-
- if (s_vismatrix[bitpos >> 3] & (1 << (bitpos & 7)))
- {
- #ifdef HLRAD_HULLU
- if(g_customshadow_with_bouncelight)
- {
- vec3_t getvalue = {1.0, 1.0, 1.0};
- FindOpacity(bitpos, getvalue);
- VectorCopy(getvalue, transparency_out);
- }
- else
- {
- VectorFill(transparency_out, 1.0);
- }
- #endif
- return true;
- }
-
- #ifdef HLRAD_HULLU
- VectorFill(transparency_out, 0.0);
- #endif
-
- return false;
- }
-
- //
- // end old vismat.c
- ////////////////////////////
-
- // =====================================================================================
- // MakeScalesVismatrix
- // =====================================================================================
- void MakeScalesVismatrix()
- {
- char transferfile[_MAX_PATH];
-
- hlassume(g_num_patches < MAX_VISMATRIX_PATCHES, assume_MAX_PATCHES);
-
- safe_strncpy(transferfile, g_source, _MAX_PATH);
- StripExtension(transferfile);
- DefaultExtension(transferfile, ".inc");
-
- if (!g_incremental || !readtransfers(transferfile, g_num_patches))
- {
- // determine visibility between g_patches
- BuildVisMatrix();
- g_CheckVisBit = CheckVisBitVismatrix;
-
- #ifdef HLRAD_HULLU
- if((s_max_transparency_count*sizeof(transparency_t))>=(1024 * 1024))
- Log("%-20s: %5.1f megs\n", "custom shadow array", (s_max_transparency_count*sizeof(transparency_t)) / (1024 * 1024.0));
- else if(s_transparency_count)
- Log("%-20s: %5.1f kilos\n", "custom shadow array", (s_max_transparency_count*sizeof(transparency_t)) / 1024.0);
- #endif
-
- #ifndef HLRAD_HULLU
- NamedRunThreadsOn(g_num_patches, g_estimate, MakeScales);
- #else
- if(g_rgb_transfers)
- {NamedRunThreadsOn(g_num_patches, g_estimate, MakeRGBScales);}
- else
- {NamedRunThreadsOn(g_num_patches, g_estimate, MakeScales);}
- #endif
- FreeVisMatrix();
-
- // invert the transfers for gather vs scatter
- #ifndef HLRAD_HULLU
- NamedRunThreadsOnIndividual(g_num_patches, g_estimate, SwapTransfers);
- #else
- if(g_rgb_transfers)
- {NamedRunThreadsOnIndividual(g_num_patches, g_estimate, SwapRGBTransfers);}
- else
- {NamedRunThreadsOnIndividual(g_num_patches, g_estimate, SwapTransfers);}
- #endif
- if (g_incremental)
- writetransfers(transferfile, g_num_patches);
- else
- unlink(transferfile);
- DumpTransfersMemoryUsage();
- }
- }
-