diff options
| -rw-r--r-- | indra/newview/pipeline.cpp | 217 |
1 files changed, 137 insertions, 80 deletions
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp index 5a173d8460..1369956eab 100644 --- a/indra/newview/pipeline.cpp +++ b/indra/newview/pipeline.cpp @@ -7686,115 +7686,172 @@ void LLPipeline::renderShadow(glh::matrix4f& view, glh::matrix4f& proj, LLCamera LLPipeline::sShadowRender = FALSE; } - +static LLFastTimer::DeclareTimer FTM_VISIBLE_CLOUD("Visible Cloud"); BOOL LLPipeline::getVisiblePointCloud(LLCamera& camera, LLVector3& min, LLVector3& max, std::vector<LLVector3>& fp, LLVector3 light_dir) { + LLFastTimer t(FTM_VISIBLE_CLOUD); //get point cloud of intersection of frust and min, max - //get set of planes - std::vector<LLPlane> ps; - if (getVisibleExtents(camera, min, max)) { return FALSE; } - ps.push_back(LLPlane(min, LLVector3(-1,0,0))); - ps.push_back(LLPlane(min, LLVector3(0,-1,0))); - ps.push_back(LLPlane(min, LLVector3(0,0,-1))); - ps.push_back(LLPlane(max, LLVector3(1,0,0))); - ps.push_back(LLPlane(max, LLVector3(0,1,0))); - ps.push_back(LLPlane(max, LLVector3(0,0,1))); + //get set of planes on bounding box + std::vector<LLPlane> bp; + + bp.push_back(LLPlane(min, LLVector3(-1,0,0))); + bp.push_back(LLPlane(min, LLVector3(0,-1,0))); + bp.push_back(LLPlane(min, LLVector3(0,0,-1))); + bp.push_back(LLPlane(max, LLVector3(1,0,0))); + bp.push_back(LLPlane(max, LLVector3(0,1,0))); + bp.push_back(LLPlane(max, LLVector3(0,0,1))); + + //potential points + std::vector<LLVector3> pp; + + //add corners of AABB + pp.push_back(LLVector3(min.mV[0], min.mV[1], min.mV[2])); + pp.push_back(LLVector3(max.mV[0], min.mV[1], min.mV[2])); + pp.push_back(LLVector3(min.mV[0], max.mV[1], min.mV[2])); + pp.push_back(LLVector3(max.mV[0], max.mV[1], min.mV[2])); + pp.push_back(LLVector3(min.mV[0], min.mV[1], max.mV[2])); + pp.push_back(LLVector3(max.mV[0], min.mV[1], max.mV[2])); + pp.push_back(LLVector3(min.mV[0], max.mV[1], max.mV[2])); + pp.push_back(LLVector3(max.mV[0], max.mV[1], max.mV[2])); - /*if (!light_dir.isExactlyZero()) + //add corners of camera frustum + for (U32 i = 0; i < 8; i++) { - LLPlane ucp; - LLPlane mcp; + pp.push_back(camera.mAgentFrustum[i]); + } - F32 maxd = -1.f; - F32 mind = 1.f; - for (U32 i = 0; i < ps.size(); ++i) - { //pick the plane most aligned to lightDir for user clip plane - LLVector3 n(ps[i].mV); - F32 da = n*light_dir; - if (da > maxd) - { - maxd = da; - ucp = ps[i]; - } + //bounding box line segments + U32 bs[] = + { + 0,1, + 1,3, + 3,2, + 2,0, + + 4,5, + 5,7, + 7,6, + 6,4, + + 0,4, + 1,5, + 3,7, + 2,6 + }; + + for (U32 i = 0; i < 12; i++) + { //for each line segment in bounding box + for (U32 j = 0; j < 6; j++) + { //for each plane in camera frustum + const LLPlane& cp = camera.getAgentPlane(j); + const LLVector3& v1 = pp[bs[i*2+0]]; + const LLVector3& v2 = pp[bs[i*2+1]]; + const LLVector3 n(cp.mV); + + LLVector3 line = v1-v2; + + F32 d1 = line*n; + F32 d2 = -cp.dist(v2); + + F32 t = d2/d1; - if (da < mind) + if (t > 0.f && t < 1.f) { - mind = da; - mcp = ps[i]; + LLVector3 intersect = v2+line*t; + pp.push_back(intersect); } } - - camera.setUserClipPlane(ucp); + } - ps.clear(); - ps.push_back(ucp); - ps.push_back(mcp); - }*/ - - for (U32 i = 0; i < 6; i++) + //camera frustum line segments + const U32 fs[] = { - ps.push_back(camera.getAgentPlane(i)); - } + 0,1, + 1,2, + 2,3, + 3,1, - //get set of points where planes intersect and points are not above any plane - fp.clear(); - - for (U32 i = 0; i < ps.size(); ++i) + 4,5, + 5,6, + 6,7, + 7,4, + + 0,4, + 1,5, + 2,6, + 3,7 + }; + + LLVector3 center = (max+min)*0.5f; + LLVector3 size = (max-min)*0.5f; + + for (U32 i = 0; i < 12; i++) { - for (U32 j = 0; j < ps.size(); ++j) + for (U32 j = 0; j < 6; ++j) { - for (U32 k = 0; k < ps.size(); ++k) - { - if (i == j || - i == k || - k == j) - { - continue; - } + const LLVector3& v1 = pp[fs[i*2+0]+8]; + const LLVector3& v2 = pp[fs[i*2+1]+8]; + const LLPlane& cp = bp[j]; + const LLVector3 n(cp.mV); - LLVector3 n1,n2,n3; - F32 d1,d2,d3; + LLVector3 line = v1-v2; - n1.setVec(ps[i].mV); - n2.setVec(ps[j].mV); - n3.setVec(ps[k].mV); + F32 d1 = line*n; + F32 d2 = -cp.dist(v2); - d1 = ps[i].mV[3]; - d2 = ps[j].mV[3]; - d3 = ps[k].mV[3]; - - //get point of intersection of 3 planes "p" - LLVector3 p = (-d1*(n2%n3)-d2*(n3%n1)-d3*(n1%n2))/(n1*(n2%n3)); - - if (llround(p*n1+d1, 0.1f) == 0.f && - llround(p*n2+d2, 0.1f) == 0.f && - llround(p*n3+d3, 0.1f) == 0.f) - { //point is on all three planes - BOOL found = TRUE; - for (U32 l = 0; l < ps.size() && found; ++l) - { - if (llround(ps[l].dist(p), 0.1f) > 0.0f) - { //point is above some plane, not contained - found = FALSE; - } - } + F32 t = d2/d1; - if (found) - { - fp.push_back(p); - } - } - } + if (t > 0.f && t < 1.f) + { + LLVector3 intersect = v2+line*t; + pp.push_back(intersect); + } } } + LLVector3 ext[] = { min-LLVector3(0.05f,0.05f,0.05f), + max+LLVector3(0.05f,0.05f,0.05f) }; + + for (U32 i = 0; i < pp.size(); ++i) + { + bool found = true; + + const F32* p = pp[i].mV; + + for (U32 j = 0; j < 3; ++j) + { + if (p[j] < ext[0].mV[j] || + p[j] > ext[1].mV[j]) + { + found = false; + break; + } + } + + for (U32 j = 0; j < 6; ++j) + { + const LLPlane& cp = camera.getAgentPlane(j); + F32 dist = cp.dist(pp[i]); + if (dist > 0.05f) //point is above some plane, not contained + { + found = false; + break; + } + } + + if (found) + { + fp.push_back(pp[i]); + } + } + if (fp.empty()) { return FALSE; |