├── LICENSE ├── README.md └── lua ├── autorun └── sh_parse.lua ├── parse ├── bsp.lua └── tex.lua └── test_bsp.lua /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. By contrast, 15 | the GNU General Public License is intended to guarantee your freedom to 16 | share and change all versions of a program--to make sure it remains free 17 | software for all its users. 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It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | {project} Copyright (C) {year} {fullname} 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | 676 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # garrysmod_bsp_renderer 2 | A Garry's Mod BSP Render written in lua 3 | 4 | #To use 5 | Put the subfolder into the addons folder 6 | Open the game 7 | Run: 8 | ``` 9 | lua_openscript_cl test_bsp.lua 10 | ``` -------------------------------------------------------------------------------- /lua/autorun/sh_parse.lua: -------------------------------------------------------------------------------- 1 | 2 | parse = parse or {}; 3 | parse.mts = parse.mts or {}; 4 | local mts = parse.mts; 5 | 6 | function parse.register(type, mt) 7 | mts[type] = mt; 8 | end 9 | 10 | 11 | function parse.new(type, name, ...) 12 | local ret = setmetatable({ 13 | file_name = name; 14 | }, mts[type]); 15 | 16 | if(ret:CanInit(...)) then ret:Init(...); end 17 | 18 | return ret; 19 | end 20 | 21 | local fs = file.Find("parse/*.lua", "LUA"); 22 | 23 | for k,v in pairs(fs) do 24 | 25 | if(SERVER) then 26 | AddCSLuaFile("parse/"..v); 27 | end 28 | include("parse/"..v); 29 | 30 | end -------------------------------------------------------------------------------- /lua/parse/bsp.lua: -------------------------------------------------------------------------------- 1 | 2 | local bsp = {}; 3 | 4 | bsp.__index = function(self, k) return getmetatable(self)[k]; end 5 | 6 | local function unsigned(n, bits) 7 | if(n < 0) then 8 | return math.abs(n) + 2^(bits-1); 9 | end 10 | return n; 11 | end 12 | 13 | function bsp:Init() 14 | self.file = file.Open(self.file_name, "rb", "GAME"); 15 | assert(self.file, "file GAME/"..tostring(self.file_name).." does not exist!"); 16 | 17 | self:ParseHeader(); 18 | self:ParseLump0(); -- entities 19 | self:ParseLump1(); -- planes 20 | self:ParseLump3(); -- vertices 21 | self:ParseLump12(); -- edges 22 | self:ParseLump13(); -- surfedges 23 | self:ParseLump7(); -- edges 24 | self:ParseLump2(); -- texdata 25 | self:ParseLump6(); -- texinfo 26 | self:ParseLump14(); 27 | 28 | 29 | end 30 | 31 | function bsp:CanInit() return self.file_name ~= nil end 32 | 33 | function bsp:ParseHeader() 34 | local header = {lumps = {}}; 35 | self.file:Seek(0); 36 | header.ident = self.file:Read(4); 37 | assert(header.ident == "VBSP", "entered incorrect map file '"..self.file_name.."'"); 38 | header.version = self.file:ReadLong(); 39 | for i = 0, 63 do header.lumps[i] = self:ParseLump(); end 40 | header.revision = self.file:ReadLong(); 41 | self.header = header; 42 | end 43 | 44 | function bsp:ParseLump() 45 | local lump = {}; 46 | lump.offset = self.file:ReadLong(); 47 | lump.length = self.file:ReadLong(); 48 | lump.version = self.file:ReadLong(); 49 | lump.fourCC = self.file:Read(4); 50 | return lump; 51 | end 52 | 53 | function bsp:ReadPlane() 54 | local plane = {}; 55 | plane.normal = Vector(self.file:ReadFloat(), self.file:ReadFloat(), self.file:ReadFloat()); 56 | plane.distance = self.file:ReadFloat(); 57 | plane.type = self.file:ReadLong(); 58 | return plane; 59 | end 60 | 61 | function bsp:ReadFace() 62 | local face = {}; 63 | face.plane = self:GetLump(1).data[unsigned(self.file:ReadShort(), 16)]; 64 | face.side = self.file:ReadByte(); 65 | face.node = self.file:ReadByte(); 66 | 67 | face.firstedge = self.file:ReadLong();-- surfedge index 68 | face.numedges = self.file:ReadShort(); 69 | face.textureinfo = self.file:ReadShort(); 70 | face.dispinfo = self.file:ReadShort(); 71 | self.file:ReadShort(); 72 | face.styles = self.file:Read(4); 73 | face.lightmapind = self.file:ReadLong(); 74 | face.area = self.file:ReadFloat(); 75 | 76 | self.file:ReadLong();self.file:ReadLong(); 77 | self.file:ReadLong();self.file:ReadLong(); 78 | self.file:ReadLong(); 79 | self.file:ReadShort(); 80 | self.file:ReadShort(); 81 | self.file:ReadLong(); 82 | return face; 83 | end 84 | 85 | function bsp:GetLump(i) return self.header.lumps[i]; end 86 | 87 | function bsp:ParseLump1() 88 | local plane_size = 20; 89 | local lump = self:GetLump(1); 90 | lump.data = {}; 91 | self.file:Seek(lump.offset); 92 | for i = 0, lump.length - 1, plane_size do 93 | 94 | lump.data[i / plane_size] = self:ReadPlane(); 95 | 96 | end 97 | lump.parsed = true; 98 | end 99 | 100 | function bsp:ReadTexInfo() 101 | 102 | return parse.new("tex", nil, self); 103 | 104 | end 105 | 106 | function bsp:ParseLump0() 107 | 108 | local lump = self:GetLump(0); 109 | self.file:Seek(lump.offset); 110 | lump.datastring = self.file:Read(lump.length); 111 | lump.data = {}; 112 | 113 | for s in lump.datastring:gmatch("%{.-%}") do 114 | lump.data[#lump.data + 1] = util.KeyValuesToTable('"xd"\r\n'..s); 115 | end 116 | 117 | end 118 | 119 | function bsp:ParseLump6() 120 | local texinfo_size = 72; 121 | 122 | local lump = self:GetLump(6); 123 | lump.data = {}; 124 | self.file:Seek(lump.offset); 125 | 126 | for i = 0, lump.length - 1, texinfo_size do 127 | 128 | lump.data[i / texinfo_size] = self:ReadTexInfo(); 129 | 130 | end 131 | 132 | lump.parsed = true; 133 | end 134 | 135 | function bsp:ParseLump2() 136 | local texdata_size = 32; 137 | local lump = self:GetLump(2); 138 | lump.data = {}; 139 | self.file:Seek(lump.offset); 140 | 141 | for i = 0, lump.length - 1, texdata_size do 142 | 143 | local r = {}; 144 | r.reflectivity = Vector(self.file:ReadFloat(), self.file:ReadFloat(), self.file:ReadFloat()); 145 | r.stringtableid = self.file:ReadLong(); 146 | r.w, r.h = self.file:ReadLong(), self.file:ReadLong(); 147 | self.file:ReadLong(); 148 | self.file:ReadLong(); 149 | 150 | local old = self.file:Tell(); 151 | self.file:Seek(self:GetLump(44).offset + 4 * r.stringtableid); 152 | 153 | r.stringtableidx = self.file:ReadLong(); 154 | 155 | self.file:Seek(self:GetLump(43).offset + r.stringtableidx); 156 | 157 | r.name = ""; 158 | for i = 1, 260 do 159 | local chr = string.char(self.file:ReadByte()); 160 | if(chr == '\x00') then break; end 161 | r.name = r.name..chr; 162 | end 163 | 164 | lump.data[i / texdata_size] = r; 165 | self.file:Seek(old); 166 | 167 | end 168 | 169 | lump.parsed = true; 170 | end 171 | 172 | function bsp:ParseLump3() 173 | local vector_size = 12; 174 | local lump = self:GetLump(3); 175 | self.file:Seek(lump.offset); 176 | lump.data = {}; 177 | 178 | for i = 0, lump.length - 1, vector_size do 179 | 180 | lump.data[i / vector_size] = Vector(self.file:ReadFloat(), self.file:ReadFloat(), self.file:ReadFloat()); 181 | 182 | end 183 | 184 | lump.parsed = true; 185 | end 186 | 187 | function bsp:ParseLump12() 188 | local edge_size = 4; -- two shorts 189 | 190 | local lump = self:GetLump(12); 191 | self.file:Seek(lump.offset); 192 | lump.data = {}; 193 | 194 | for i = 0, lump.length - 1, edge_size do 195 | lump.data[i/edge_size] = { 196 | [0] = unsigned(self.file:ReadShort(), 16), 197 | [1] = unsigned(self.file:ReadShort(), 16) 198 | }; 199 | end 200 | 201 | lump.parsed = true; 202 | end 203 | 204 | function bsp:ParseLump7() 205 | local face_size = 56; 206 | 207 | local lump = self:GetLump(7); 208 | self.file:Seek(lump.offset); 209 | lump.data = {}; 210 | 211 | 212 | for i = 0, lump.length - 1, face_size do 213 | 214 | lump.data[i / face_size] = self:ReadFace(); 215 | 216 | end 217 | lump.parsed = true; 218 | end 219 | 220 | function bsp:ParseLump13() 221 | local int_size = 4; 222 | 223 | local lump = self:GetLump(13); 224 | self.file:Seek(lump.offset); 225 | lump.data = {}; 226 | 227 | for i = 0, lump.length - 1, int_size do 228 | 229 | local n = self.file:ReadLong(); 230 | lump.data[i / int_size] = {math.abs(n), n >= 0}; 231 | 232 | end 233 | 234 | lump.parsed = true; 235 | end 236 | 237 | function bsp:ParseLump14() 238 | local int_size = 48; 239 | 240 | local lump = self:GetLump(14); 241 | self.file:Seek(lump.offset); 242 | lump.data = {}; 243 | 244 | for i = 0, lump.length - 1, int_size do 245 | 246 | local r = {}; 247 | r.mins = Vector(self.file:ReadFloat(), self.file:ReadFloat(), self.file:ReadFloat()); 248 | r.maxs = Vector(self.file:ReadFloat(), self.file:ReadFloat(), self.file:ReadFloat()); 249 | r.origin = Vector(self.file:ReadFloat(), self.file:ReadFloat(), self.file:ReadFloat()); 250 | r.node = self.file:ReadLong(); 251 | 252 | r.firstface = self.file:ReadLong(); 253 | r.numfaces = self.file:ReadLong(); 254 | 255 | lump.data[i / int_size] = r; 256 | 257 | end 258 | 259 | lump.parsed = true; 260 | end 261 | 262 | parse.register("bsp", bsp); -------------------------------------------------------------------------------- /lua/parse/tex.lua: -------------------------------------------------------------------------------- 1 | local tex = {}; 2 | 3 | tex.__index = function(self, k) return getmetatable(self)[k]; end 4 | 5 | function tex:GetMaterial(scale) 6 | return self.Material or self:MakeMaterial(); 7 | end 8 | 9 | function tex:MakeMaterial() 10 | 11 | self.w = self.texdata.w; 12 | self.h = self.texdata.h; 13 | 14 | self.Material = CreateMaterial(tostring(self).."_texinfo", "UnlitGeneric", 15 | { 16 | ["$basetexture"] = Material(self.texdata.name):GetTexture("$basetexture"):GetName(), 17 | ["$detailscale"] = 1, 18 | ["$reflectivity"] = self.texdata.reflectivity, 19 | ["$model"] = 1, 20 | }); 21 | 22 | return self.Material; 23 | end 24 | 25 | function tex:GenerateUV(x,y,z) 26 | return (self.vecs[0][3] + self.vecs[0][2] * z + self.vecs[0][1] * y + self.vecs[0][0] * x) / self.texdata.w, 27 | (self.vecs[1][3] + self.vecs[1][2] * z + self.vecs[1][1] * y + self.vecs[1][0] * x) / self.texdata.h; 28 | end 29 | 30 | function tex:Init(bsp) 31 | 32 | self.vecs = { 33 | [0] = {}, [1] = {} 34 | }; 35 | self.light = { 36 | [0] = {}, [1] = {} 37 | }; 38 | 39 | self.vecs[0][0] = bsp.file:ReadFloat(); 40 | self.vecs[0][1] = bsp.file:ReadFloat(); 41 | self.vecs[0][2] = bsp.file:ReadFloat(); 42 | self.vecs[0][3] = bsp.file:ReadFloat(); 43 | 44 | self.vecs[1][0] = bsp.file:ReadFloat(); 45 | self.vecs[1][1] = bsp.file:ReadFloat(); 46 | self.vecs[1][2] = bsp.file:ReadFloat(); 47 | self.vecs[1][3] = bsp.file:ReadFloat(); 48 | 49 | self.light[0][0] = bsp.file:ReadFloat(); 50 | self.light[0][1] = bsp.file:ReadFloat(); 51 | self.light[0][2] = bsp.file:ReadFloat(); 52 | self.light[0][3] = bsp.file:ReadFloat(); 53 | 54 | self.light[1][0] = bsp.file:ReadFloat(); 55 | self.light[1][1] = bsp.file:ReadFloat(); 56 | self.light[1][2] = bsp.file:ReadFloat(); 57 | self.light[1][3] = bsp.file:ReadFloat(); 58 | 59 | 60 | self.flags = bsp.file:ReadLong(); 61 | 62 | self.texdataid = bsp.file:ReadLong(); 63 | 64 | if(self.texdataid == -1) then return; end 65 | 66 | self.texdata = bsp:GetLump(2).data[self.texdataid]; 67 | 68 | end 69 | 70 | 71 | function tex:CanInit(bsp) return bsp ~= nil; end 72 | 73 | parse.register("tex", tex); -------------------------------------------------------------------------------- /lua/test_bsp.lua: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | local meshes = {}; 5 | local materials = {}; 6 | local ents = {}; 7 | local divisor = 25; -- 1/25 scale 8 | local pos, ang; 9 | 10 | local function trinorm(p1,p2,p3) 11 | local u = p2 - p1; 12 | local v = p3 - p1; 13 | return Vector( 14 | u.y*v.z - u.z*v.y, 15 | u.z*v.x - u.x*v.z, 16 | u.x*v.y - u.y*v.x 17 | ); 18 | end 19 | 20 | local function buildtriangle(triangles, buf, vertex, u, v) 21 | 22 | buf[#buf + 1] = { 23 | pos = vertex/divisor, 24 | u = u, 25 | v = v, 26 | }; 27 | 28 | if(#buf == 3) then 29 | for i = 1, 3 do 30 | triangles[#triangles + 1] = buf[i]; 31 | end 32 | 33 | table.remove(buf, 2); 34 | 35 | end 36 | 37 | 38 | end 39 | 40 | concommand.Add("drawmap", function(p,_,_,s) 41 | meshes = {}; 42 | materials = {}; 43 | pos = p:GetEyeTrace().HitPos + Vector(0,0,50); 44 | local time = SysTime; 45 | local t = time(); 46 | local self = parse.new("bsp", "maps/"..s..".bsp"); 47 | print("decode: ", ("%.6f"):format(time() - t)); 48 | 49 | local material_mesh_lookup = {}; 50 | local material_list = {}; 51 | 52 | local l7 = self:GetLump(7); 53 | local l13 = self:GetLump(13); 54 | local l12 = self:GetLump(12); 55 | local l3 = self:GetLump(3); 56 | local l6 = self:GetLump(6); 57 | 58 | for k = 0, #l7.data do 59 | local v = l7.data[k]; 60 | if(l6.data[v.textureinfo].texdata.name:sub(1,6):lower() == "tools/") then continue; end 61 | local mat = l6.data[v.textureinfo]:GetMaterial(divisor); 62 | 63 | local name = l6.data[v.textureinfo]; 64 | --name = name.." "..tostring(v.w).." "..tostring(v.h).." "..tostring(v.plane.normal); 65 | material_list[name] = material_list[name] or {}; 66 | --local str = tostring(v.plane.normal); 67 | --material_list[name][str] = material_list[name][str] or {}; 68 | table.insert(material_list[name], v); 69 | 70 | end 71 | 72 | local light_normal = Vector(0,0,0); 73 | 74 | for _, coal in next, material_list, nil do 75 | local triangles = {}; 76 | 77 | local mat = l6.data[coal[1].textureinfo]; 78 | 79 | local _mesh = Mesh(mat); 80 | 81 | meshes[#meshes + 1] = _mesh; 82 | materials[#meshes] = mat:GetMaterial(divisor); 83 | 84 | for i = 1, #coal do 85 | local v = coal[i]; 86 | 87 | local buf = {}; -- 3 vertices 88 | 89 | for i = 0, v.numedges - 1 do 90 | 91 | local edgeidx = l13.data[v.firstedge + i]; 92 | 93 | local edgesidx = l12.data[edgeidx[1]]; 94 | 95 | local edge1, edge2 = l3.data[edgesidx[0]], l3.data[edgesidx[1]]; 96 | 97 | local first = edgeidx[2] and edge1 or edge2; 98 | local second = edgeidx[2] and edge2 or edge1; 99 | 100 | 101 | local u,v = mat:GenerateUV(first.x, first.y, first.z); 102 | buildtriangle(triangles, buf, first, u, v); 103 | 104 | 105 | local u,v = mat:GenerateUV(second.x, second.y, second.z); 106 | buildtriangle(triangles, buf, second, u, v); 107 | 108 | 109 | end 110 | 111 | end 112 | _mesh:BuildFromTriangles(triangles); 113 | end 114 | 115 | for k,v in next, self:GetLump(0).data do 116 | if(v.model and v.origin and v.angles) then 117 | local e = ClientsideModel(v.model); 118 | e:SetNoDraw(true); 119 | 120 | e:SetRenderOrigin(util.StringToType(v.origin, "Vector") / divisor); 121 | e:SetRenderAngles(util.StringToType(v.angles, "Angle")); 122 | e:SetModelScale(1/divisor, 0); 123 | e:SetSkin(tonumber(v.skin or 0) or 0); 124 | 125 | ents[#ents + 1] = e; 126 | e:Spawn(); 127 | 128 | end 129 | end 130 | 131 | end); 132 | 133 | local nmeshes = 0; 134 | local time = 0; 135 | local entities = 0; 136 | local meshtime = 0; 137 | local entitytime = 0; 138 | local lasttime = SysTime(); 139 | local updatetime = .25; 140 | 141 | hook.Add("HUDPaint", "", function() 142 | 143 | surface.SetTextColor(255,255,255,255); 144 | surface.SetFont("BudgetLabel"); 145 | surface.SetTextPos(3,2); 146 | surface.DrawText(("render time: %.6f (%i meshes, %i entities)"):format(time, nmeshes, entities)); 147 | surface.SetTextPos(2,10); 148 | surface.DrawText(("mesh time: %.6f, entity time: %.6f"):format(meshtime, entitytime)); 149 | 150 | end); 151 | 152 | hook.Add("PreDrawOpaqueRenderables", "", function() 153 | if(not ang) then ang = Angle(0,0,0); end 154 | if(not pos) then return; end 155 | local t = SysTime(); 156 | local et, mt; 157 | ang.y = math.NormalizeAngle(ang.y + 0 * FrameTime()); 158 | render.PushFilterMag(TEXFILTER.ANISOTROPIC); 159 | render.PushFilterMin(TEXFILTER.ANISOTROPIC); 160 | render.SetLightingMode(2); 161 | 162 | local change_pos, change_ang; 163 | change_ang = ang; 164 | change_pos = EyePos() - pos; 165 | change_pos:Rotate(change_ang); 166 | 167 | cam.Start3D(change_pos, EyeAngles() + change_ang); 168 | mt = SysTime(); 169 | for i = 1, #meshes do 170 | 171 | render.SetMaterial(materials[i]); 172 | meshes[i]:Draw(); 173 | 174 | end 175 | 176 | mt = SysTime() - mt; 177 | 178 | et = SysTime(); 179 | for i = 1, #ents do 180 | local v = ents[i]; 181 | v:SetNoDraw(false); -- do i have to do this? 182 | v:DrawModel(); 183 | v:SetNoDraw(true); 184 | end 185 | et = SysTime() - et; 186 | cam.End3D(); 187 | 188 | render.SetLightingMode(0); 189 | render.PopFilterMin(); 190 | render.PopFilterMag(); 191 | 192 | t = SysTime() - t; 193 | 194 | if(SysTime() - lasttime > updatetime) then 195 | nmeshes = #meshes; 196 | entities = #ents; 197 | time = t; 198 | entitytime = et; 199 | meshtime = mt; 200 | lasttime = SysTime(); 201 | 202 | end 203 | 204 | end); 205 | --------------------------------------------------------------------------------