Differences
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| Both sides previous revisionPrevious revisionNext revision | Previous revisionLast revisionBoth sides next revision | ||
| billboard [2020/01/10 12:21] – [Example: Terrain Grass Billboard] admin | billboard [2020/04/11 14:30] – [Billboard] admin | ||
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| Line 4: | Line 4: | ||
| The billboard component is a mesh itself, into which proxies are merged. Much faster rendering is possible if proxy meshes are merge into one mesh, instead of rendering each mesh. | The billboard component is a mesh itself, into which proxies are merged. Much faster rendering is possible if proxy meshes are merge into one mesh, instead of rendering each mesh. | ||
| + | |||
| + | Restriction: | ||
| We typically use this technique for grass or trees. | We typically use this technique for grass or trees. | ||
| Line 54: | Line 56: | ||
| FGrass := TGorillaBillboard.Create(FGorilla); | FGrass := TGorillaBillboard.Create(FGorilla); | ||
| FGrass .Parent := FGorilla; | FGrass .Parent := FGorilla; | ||
| - | FGrass.SourceObject := LBillboard; | + | FGrass.AddSourceObject(LBillboard); |
| FGrass.MaterialSource := LGrassMat; | FGrass.MaterialSource := LGrassMat; | ||
| FGrass.SetSize(GORILLA_BILLBOARD_SIZE, | FGrass.SetSize(GORILLA_BILLBOARD_SIZE, | ||
| Line 160: | Line 162: | ||
| // after usage, it will be destroyed, because it consumes a lot memory | // after usage, it will be destroyed, because it consumes a lot memory | ||
| // and we only need it for the moment | // and we only need it for the moment | ||
| - | TMeshDef(FTerrain.Def).AcquireBVH(); | + | TMeshDef(ATerrain.Def).AcquireBVH(); |
| try | try | ||
| LChunks := 64; | LChunks := 64; | ||
| Line 190: | Line 192: | ||
| // place billboard chunk over terrain | // place billboard chunk over terrain | ||
| LGrass.Position.Point := Point3D(LX, 0, LZ); | LGrass.Position.Point := Point3D(LX, 0, LZ); | ||
| + | | ||
| + | // take the template model material source as material for the billboard | ||
| + | // this could be replaced by a grass material shader of course | ||
| LGrass.MaterialSource := FGrassTemps[0].Meshes[0].MaterialSource; | LGrass.MaterialSource := FGrassTemps[0].Meshes[0].MaterialSource; | ||
| FGrassBillboards.Add(LGrass); | FGrassBillboards.Add(LGrass); | ||
| // fill up billboard chunk with 64 copies of our grass template | // fill up billboard chunk with 64 copies of our grass template | ||
| - | LFillAlg := TGorillaBillboardTerrainFilling.Create(LGrass, | + | LFillAlg := TGorillaBillboardTerrainFilling.Create(LGrass, |
| try | try | ||
| LFillAlg.Count := 64; | LFillAlg.Count := 64; | ||
| Line 203: | Line 208: | ||
| // we put grass billboard into terrain model | // we put grass billboard into terrain model | ||
| - | LGrass.Parent := FTerrain; | + | LGrass.Parent := ATerrain; |
| end; | end; | ||
| finally | finally | ||
| // at the end we destroy the bounding volume hierarchy again to free memory | // at the end we destroy the bounding volume hierarchy again to free memory | ||
| - | TMeshDef(FTerrain.Def).ReleaseBVH(); | + | TMeshDef(ATerrain.Def).ReleaseBVH(); |
| end; | end; | ||
| end; | end; | ||