diff options
Diffstat (limited to 'src/engine/shadowmap.cpp')
| -rw-r--r-- | src/engine/shadowmap.cpp | 400 |
1 files changed, 200 insertions, 200 deletions
diff --git a/src/engine/shadowmap.cpp b/src/engine/shadowmap.cpp index 7b7f894..2216452 100644 --- a/src/engine/shadowmap.cpp +++ b/src/engine/shadowmap.cpp @@ -13,8 +13,8 @@ VARFP(shadowmapprecision, 0, 0, 1, cleanshadowmap()); bvec shadowmapambientcolor(0, 0, 0); HVARFR(shadowmapambient, 0, 0, 0xFFFFFF, { - if(shadowmapambient <= 255) shadowmapambient |= (shadowmapambient<<8) | (shadowmapambient<<16); - shadowmapambientcolor = bvec((shadowmapambient>>16)&0xFF, (shadowmapambient>>8)&0xFF, shadowmapambient&0xFF); + if(shadowmapambient <= 255) shadowmapambient |= (shadowmapambient<<8) | (shadowmapambient<<16); + shadowmapambientcolor = bvec((shadowmapambient>>16)&0xFF, (shadowmapambient>>8)&0xFF, shadowmapambient&0xFF); }); VARP(shadowmapintensity, 0, 40, 100); @@ -29,54 +29,54 @@ float shadowmapmaxz = 0; void setshadowdir(int angle) { - shadowdir = vec(0, SHADOWSKEW, 1); - shadowdir.rotate_around_z(angle*RAD); + shadowdir = vec(0, SHADOWSKEW, 1); + shadowdir.rotate_around_z(angle*RAD); } VARFR(shadowmapangle, 0, 0, 360, setshadowdir(shadowmapangle)); void guessshadowdir() { - if(shadowmapangle) return; - vec dir; - if(!sunlightcolor.iszero()) dir = sunlightdir; - else - { - vec lightpos(0, 0, 0), casterpos(0, 0, 0); - int numlights = 0, numcasters = 0; - const vector<extentity *> &ents = entities::getents(); - loopv(ents) - { - extentity &e = *ents[i]; - 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.type<ET_GAMESPECIFIC) break; - casterpos.add(e.o); - numcasters++; - break; - } - } - if(!numlights || !numcasters) return; - lightpos.div(numlights); - casterpos.div(numcasters); - dir = vec(lightpos).sub(casterpos); - } - dir.z = 0; - if(dir.iszero()) return; - dir.normalize(); - dir.mul(SHADOWSKEW); - dir.z = 1; - shadowdir = dir; + if(shadowmapangle) return; + vec dir; + if(!sunlightcolor.iszero()) dir = sunlightdir; + else + { + vec lightpos(0, 0, 0), casterpos(0, 0, 0); + int numlights = 0, numcasters = 0; + const vector<extentity *> &ents = entities::getents(); + loopv(ents) + { + extentity &e = *ents[i]; + 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.type<ET_GAMESPECIFIC) break; + casterpos.add(e.o); + numcasters++; + break; + } + } + if(!numlights || !numcasters) return; + lightpos.div(numlights); + casterpos.div(numcasters); + dir = vec(lightpos).sub(casterpos); + } + dir.z = 0; + if(dir.iszero()) return; + dir.normalize(); + dir.mul(SHADOWSKEW); + dir.z = 1; + shadowdir = dir; } bool shadowmapping = false; @@ -90,190 +90,190 @@ VAR(smoothshadowmappeel, 1, 0, 0); static struct shadowmaptexture : rendertarget { - const GLenum *colorformats() const - { - static const GLenum rgbafmts[] = { GL_RGBA16F, GL_RGBA16, GL_RGBA, GL_RGBA8, GL_FALSE }; - return &rgbafmts[fpshadowmap && hasTF ? 0 : (shadowmapprecision ? 1 : 2)]; - } - - bool swaptexs() const { return true; } - - bool scissorblur(int &x, int &y, int &w, int &h) - { - x = max(int(floor((scissorx1+1)/2*vieww)) - 2*blursize, 2); - y = max(int(floor((scissory1+1)/2*viewh)) - 2*blursize, 2); - w = min(int(ceil((scissorx2+1)/2*vieww)) + 2*blursize, vieww-2) - x; - h = min(int(ceil((scissory2+1)/2*viewh)) + 2*blursize, viewh-2) - y; - return true; - } - - bool scissorrender(int &x, int &y, int &w, int &h) - { - x = y = 2; - w = vieww - 2*2; - h = viewh - 2*2; - return true; - } - - void doclear() - { - glClearColor(0, 0, 0, 0); - glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT); - } - - bool dorender() - { - vec skewdir(shadowdir); - skewdir.rotate_around_z(-camera1->yaw*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) - { - 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; - } + const GLenum *colorformats() const + { + static const GLenum rgbafmts[] = { GL_RGBA16F, GL_RGBA16, GL_RGBA, GL_RGBA8, GL_FALSE }; + return &rgbafmts[fpshadowmap && hasTF ? 0 : (shadowmapprecision ? 1 : 2)]; + } + + bool swaptexs() const { return true; } + + bool scissorblur(int &x, int &y, int &w, int &h) + { + x = max(int(floor((scissorx1+1)/2*vieww)) - 2*blursize, 2); + y = max(int(floor((scissory1+1)/2*viewh)) - 2*blursize, 2); + w = min(int(ceil((scissorx2+1)/2*vieww)) + 2*blursize, vieww-2) - x; + h = min(int(ceil((scissory2+1)/2*viewh)) + 2*blursize, viewh-2) - y; + return true; + } + + bool scissorrender(int &x, int &y, int &w, int &h) + { + x = y = 2; + w = vieww - 2*2; + h = viewh - 2*2; + return true; + } + + void doclear() + { + glClearColor(0, 0, 0, 0); + glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT); + } + + bool dorender() + { + vec skewdir(shadowdir); + skewdir.rotate_around_z(-camera1->yaw*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) + { + 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() { - shadowmaptex.cleanup(true); + shadowmaptex.cleanup(true); } 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; + 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) { - if(o.z + zrad <= shadowfocus.z - shadowmapdist || o.z - zrad >= shadowfocus.z) return false; + if(o.z + zrad <= shadowfocus.z - shadowmapdist || o.z - zrad >= shadowfocus.z) return false; - shadowmapmaxz = max(shadowmapmaxz, o.z + zrad); + shadowmapmaxz = max(shadowmapmaxz, o.z + zrad); - float x1, y1, x2, y2; - calcshadowmapbb(o, xyrad, zrad, x1, y1, x2, y2); + float x1, y1, x2, y2; + calcshadowmapbb(o, xyrad, zrad, x1, y1, x2, y2); - if(!shadowmaptex.addblurtiles(x1, y1, x2, y2, 2)) return false; + if(!shadowmaptex.addblurtiles(x1, y1, x2, y2, 2)) return false; - shadowmapcasters++; - return true; + shadowmapcasters++; + return true; } bool isshadowmapreceiver(vtxarray *va) { - if(!shadowmap || !shadowmapcasters) return false; + if(!shadowmap || !shadowmapcasters) return false; - if(va->shadowmapmax.z <= shadowfocus.z - shadowmapdist || va->shadowmapmin.z >= shadowmapmaxz) 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; + 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); + 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); + return shadowmaptex.checkblurtiles(x1, y1, x2, y2, 2); #if 0 - // cheaper inexact test - float dz = va->o.z + va->size/2 - shadowfocus.z; - float cx = shadowfocus.x + dz*shadowdir.x, cy = shadowfocus.y + dz*shadowdir.y; - float skew = va->size/2*SHADOWSKEW; - if(!shadowmap || !shadowmaptex || - va->o.z + va->size <= shadowfocus.z - shadowmapdist || va->o.z >= shadowmapmaxz || - va->o.x + va->size <= cx - shadowmapradius-skew || va->o.x >= cx + shadowmapradius+skew || - va->o.y + va->size <= cy - shadowmapradius-skew || va->o.y >= cy + shadowmapradius+skew) - return false; - return true; + // cheaper inexact test + float dz = va->o.z + va->size/2 - shadowfocus.z; + float cx = shadowfocus.x + dz*shadowdir.x, cy = shadowfocus.y + dz*shadowdir.y; + float skew = va->size/2*SHADOWSKEW; + if(!shadowmap || !shadowmaptex || + va->o.z + va->size <= shadowfocus.z - shadowmapdist || va->o.z >= shadowmapmaxz || + va->o.x + va->size <= cx - shadowmapradius-skew || va->o.x >= cx + shadowmapradius+skew || + va->o.y + va->size <= cy - shadowmapradius-skew || va->o.y >= cy + shadowmapradius+skew) + return false; + return true; #endif } 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; - float skew = rad*SHADOWSKEW; - if(!shadowmapping || - o.z + rad <= shadowfocus.z - shadowmapdist || o.z - rad >= shadowfocus.z || - o.x + rad <= cx - shadowmapradius-skew || o.x - rad >= cx + shadowmapradius+skew || - o.y + rad <= cy - shadowmapradius-skew || o.y - rad >= cy + shadowmapradius+skew) - return false; - return true; + // cheaper inexact test + float dz = o.z - shadowfocus.z; + float cx = shadowfocus.x + dz*shadowdir.x, cy = shadowfocus.y + dz*shadowdir.y; + float skew = rad*SHADOWSKEW; + if(!shadowmapping || + o.z + rad <= shadowfocus.z - shadowmapdist || o.z - rad >= shadowfocus.z || + o.x + rad <= cx - shadowmapradius-skew || o.x - rad >= cx + shadowmapradius+skew || + o.y + rad <= cy - shadowmapradius-skew || o.y - rad >= cy + shadowmapradius+skew) + return false; + return true; } void pushshadowmap() { - if(!shadowmap || !shadowmaptex.rendertex) return; + if(!shadowmap || !shadowmaptex.rendertex) return; - glActiveTexture_(GL_TEXTURE7); - glBindTexture(GL_TEXTURE_2D, shadowmaptex.rendertex); + glActiveTexture_(GL_TEXTURE7); + glBindTexture(GL_TEXTURE_2D, shadowmaptex.rendertex); - matrix4 m = shadowmatrix; - m.projective(-1, 1-shadowmapbias/float(shadowmapdist)); - GLOBALPARAM(shadowmapproject, m); + matrix4 m = shadowmatrix; + m.projective(-1, 1-shadowmapbias/float(shadowmapdist)); + GLOBALPARAM(shadowmapproject, m); - glActiveTexture_(GL_TEXTURE0); + glActiveTexture_(GL_TEXTURE0); - float r, g, b; + float r, g, b; if(!shadowmapambient) { if(skylightcolor[0] || skylightcolor[1] || skylightcolor[2]) @@ -283,24 +283,24 @@ void pushshadowmap() b = max(25.0f, 0.4f*ambientcolor[2] + 0.6f*max(ambientcolor[2], skylightcolor[2])); } else - { - r = max(25.0f, 2.0f*ambientcolor[0]); - g = max(25.0f, 2.0f*ambientcolor[1]); - b = max(25.0f, 2.0f*ambientcolor[2]); - } - } - else { r = shadowmapambientcolor[0]; g = shadowmapambientcolor[1]; b = shadowmapambientcolor[2]; } - GLOBALPARAMF(shadowmapambient, r/255.0f, g/255.0f, b/255.0f); + { + r = max(25.0f, 2.0f*ambientcolor[0]); + g = max(25.0f, 2.0f*ambientcolor[1]); + b = max(25.0f, 2.0f*ambientcolor[2]); + } + } + else { r = shadowmapambientcolor[0]; g = shadowmapambientcolor[1]; b = shadowmapambientcolor[2]; } + GLOBALPARAMF(shadowmapambient, r/255.0f, g/255.0f, b/255.0f); } void popshadowmap() { - if(!shadowmap || !shadowmaptex.rendertex) return; + if(!shadowmap || !shadowmaptex.rendertex) return; } void rendershadowmap() { - if(!shadowmap) return; + if(!shadowmap) return; - shadowmaptex.render(1<<shadowmapsize, 1<<shadowmapsize, blurshadowmap, blursmsigma/100.0f); + shadowmaptex.render(1<<shadowmapsize, 1<<shadowmapsize, blurshadowmap, blursmsigma/100.0f); } |