From 0a1172b75f571685c264a8b9d8ee224bbf11381f Mon Sep 17 00:00:00 2001 From: xolatile Date: Wed, 6 Aug 2025 22:54:55 +0200 Subject: Please do not hate me, it makes sense... --- src/engine/shadowmap.cpp | 100 ++++++++++------------------------------------- 1 file changed, 21 insertions(+), 79 deletions(-) (limited to 'src/engine/shadowmap.cpp') diff --git a/src/engine/shadowmap.cpp b/src/engine/shadowmap.cpp index 24a6fe5..1eefe4b 100644 --- a/src/engine/shadowmap.cpp +++ b/src/engine/shadowmap.cpp @@ -11,8 +11,7 @@ VARP(shadowmapdist, 128, 256, 512); VARFP(fpshadowmap, 0, 0, 1, cleanshadowmap()); VARFP(shadowmapprecision, 0, 0, 1, cleanshadowmap()); bvec shadowmapambientcolor(0, 0, 0); -HVARFR(shadowmapambient, 0, 0, 0xFFFFFF, -{ +HVARFR(shadowmapambient, 0, 0, 0xFFFFFF, { if(shadowmapambient <= 255) shadowmapambient |= (shadowmapambient<<8) | (shadowmapambient<<16); shadowmapambientcolor = bvec((shadowmapambient>>16)&0xFF, (shadowmapambient>>8)&0xFF, shadowmapambient&0xFF); }); @@ -27,36 +26,29 @@ vec shadowoffset(0, 0, 0), shadowfocus(0, 0, 0), shadowdir(0, SHADOWSKEW, 1); VAR(shadowmapcasters, 1, 0, 0); float shadowmapmaxz = 0; -void setshadowdir(int angle) -{ +void setshadowdir(int angle) { shadowdir = vec(0, SHADOWSKEW, 1); shadowdir.rotate_around_z(angle*RAD); } VARFR(shadowmapangle, 0, 0, 360, setshadowdir(shadowmapangle)); -void guessshadowdir() -{ +void guessshadowdir() { if(shadowmapangle) return; - vec dir; - { + vec dir; { vec lightpos(0, 0, 0), casterpos(0, 0, 0); int numlights = 0, numcasters = 0; const vector &ents = entities::getents(); - loopv(ents) - { + loopv(ents) { extentity &e = *ents[i]; - switch(e.type) - { + switch(e.type) { case ET_LIGHT: if(!e.attr1) { lightpos.add(e.o); numlights++; } break; - case ET_MAPMODEL: casterpos.add(e.o); numcasters++; break; - default: if(e.typeyaw*RAD); - vec dir; vecfromyawpitch(camera1->yaw, camera1->pitch, 1, 0, dir); dir.z = 0; dir.mul(shadowmapradius); - vec dirx, diry; vecfromyawpitch(camera1->yaw, 0, 0, 1, dirx); vecfromyawpitch(camera1->yaw, 0, 1, 0, diry); shadowoffset.x = -fmod(dirx.dot(camera1->o) - skewdir.x*camera1->o.z, 2.0f*shadowmapradius/vieww); shadowoffset.y = -fmod(diry.dot(camera1->o) - skewdir.y*camera1->o.z, 2.0f*shadowmapradius/viewh); - shadowmatrix.ortho(-shadowmapradius, shadowmapradius, -shadowmapradius, shadowmapradius, -shadowmapdist, shadowmapdist); shadowmatrix.mul(matrix3(vec(1, 0, 0), vec(0, 1, 0), vec(skewdir.x, skewdir.y, 1))); shadowmatrix.translate(skewdir.x*shadowmapheight + shadowoffset.x, skewdir.y*shadowmapheight + shadowoffset.y + dir.magnitude(), -shadowmapheight); shadowmatrix.rotate_around_z((camera1->yaw+180)*-RAD); shadowmatrix.translate(vec(camera1->o).neg()); GLOBALPARAM(shadowmatrix, shadowmatrix); - shadowfocus = camera1->o; shadowfocus.add(dir); shadowfocus.add(vec(shadowdir).mul(shadowmapheight)); shadowfocus.add(dirx.mul(shadowoffset.x)); shadowfocus.add(diry.mul(shadowoffset.y)); - gle::colorf(0, 0, 0); - GLOBALPARAMF(shadowmapbias, -shadowmapbias/float(shadowmapdist), 1 - (shadowmapbias + (smoothshadowmappeel ? 0 : shadowmappeelbias))/float(shadowmapdist)); - shadowmapcasters = 0; shadowmapmaxz = shadowfocus.z - shadowmapdist; shadowmapping = true; rendergame(); shadowmapping = false; shadowmapmaxz = min(shadowmapmaxz, shadowfocus.z); - - if(shadowmapcasters && smdepthpeel) - { + if(shadowmapcasters && smdepthpeel) { int sx, sy, sw, sh; bool scissoring = rtscissor && scissorblur(sx, sy, sw, sh) && sw > 0 && sh > 0; if(scissoring) glScissor(sx, sy, sw, sh); if(!rtscissor || scissoring) rendershadowmapreceivers(); } - return shadowmapcasters>0; } } shadowmaptex; -void cleanshadowmap() -{ +void cleanshadowmap() { shadowmaptex.cleanup(true); } -void calcshadowmapbb(const vec &o, float xyrad, float zrad, float &x1, float &y1, float &x2, float &y2) -{ +void calcshadowmapbb(const vec &o, float xyrad, float zrad, float &x1, float &y1, float &x2, float &y2) { vec skewdir(shadowdir); skewdir.rotate_around_z(-camera1->yaw*RAD); - vec ro(o); ro.sub(camera1->o); ro.rotate_around_z(-(camera1->yaw+180)*RAD); ro.x += ro.z * skewdir.x + shadowoffset.x; ro.y += ro.z * skewdir.y + shadowmapradius * cosf(camera1->pitch*RAD) + shadowoffset.y; - vec high(ro), low(ro); high.x += zrad * skewdir.x; high.y += zrad * skewdir.y; low.x -= zrad * skewdir.x; low.y -= zrad * skewdir.y; - x1 = (min(high.x, low.x) - xyrad) / shadowmapradius; y1 = (min(high.y, low.y) - xyrad) / shadowmapradius; x2 = (max(high.x, low.x) + xyrad) / shadowmapradius; y2 = (max(high.y, low.y) + xyrad) / shadowmapradius; } -bool addshadowmapcaster(const vec &o, float xyrad, float zrad) -{ +bool addshadowmapcaster(const vec &o, float xyrad, float zrad) { if(o.z + zrad <= shadowfocus.z - shadowmapdist || o.z - zrad >= shadowfocus.z) return false; - shadowmapmaxz = max(shadowmapmaxz, o.z + zrad); - float x1, y1, x2, y2; calcshadowmapbb(o, xyrad, zrad, x1, y1, x2, y2); - if(!shadowmaptex.addblurtiles(x1, y1, x2, y2, 2)) return false; - shadowmapcasters++; return true; } -bool isshadowmapreceiver(vtxarray *va) -{ +bool isshadowmapreceiver(vtxarray *va) { if(!shadowmap || !shadowmapcasters) return false; - if(va->shadowmapmax.z <= shadowfocus.z - shadowmapdist || va->shadowmapmin.z >= shadowmapmaxz) return false; - float xyrad = SQRT2*0.5f*max(va->shadowmapmax.x-va->shadowmapmin.x, va->shadowmapmax.y-va->shadowmapmin.y), zrad = 0.5f*(va->shadowmapmax.z-va->shadowmapmin.z), x1, y1, x2, y2; if(xyrad<0 || zrad<0) return false; - vec center = vec(va->shadowmapmin).add(vec(va->shadowmapmax)).mul(0.5f); calcshadowmapbb(center, xyrad, zrad, x1, y1, x2, y2); - return shadowmaptex.checkblurtiles(x1, y1, x2, y2, 2); #if 0 @@ -244,8 +200,7 @@ bool isshadowmapreceiver(vtxarray *va) #endif } -bool isshadowmapcaster(const vec &o, float rad) -{ +bool isshadowmapcaster(const vec &o, float rad) { // cheaper inexact test float dz = o.z - shadowfocus.z; float cx = shadowfocus.x + dz*shadowdir.x, cy = shadowfocus.y + dz*shadowdir.y; @@ -258,22 +213,16 @@ bool isshadowmapcaster(const vec &o, float rad) return true; } -void pushshadowmap() -{ +void pushshadowmap() { if(!shadowmap || !shadowmaptex.rendertex) return; - glActiveTexture_(GL_TEXTURE7); glBindTexture(GL_TEXTURE_2D, shadowmaptex.rendertex); - matrix4 m = shadowmatrix; m.projective(-1, 1-shadowmapbias/float(shadowmapdist)); GLOBALPARAM(shadowmapproject, m); - glActiveTexture_(GL_TEXTURE0); - float r, g, b; - if(!shadowmapambient) - { + if(!shadowmapambient) { r = max(25.0f, 2.0f*ambientcolor[0]); g = max(25.0f, 2.0f*ambientcolor[1]); b = max(25.0f, 2.0f*ambientcolor[2]); @@ -282,14 +231,7 @@ void pushshadowmap() GLOBALPARAMF(shadowmapambient, r/255.0f, g/255.0f, b/255.0f); } -void popshadowmap() -{ - if(!shadowmap || !shadowmaptex.rendertex) return; -} - -void rendershadowmap() -{ +void rendershadowmap() { if(!shadowmap) return; - shadowmaptex.render(1<