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faster drawing of convex shapes online
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Zeno Rogue
parent
ef83f1ef23
commit
d40680358c
145
polygons.cpp
145
polygons.cpp
@ -31,6 +31,11 @@ static const int POLY_HASSHADOW = 1024;
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// Goldberg shapes
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static const int POLY_GP = 2048;
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// Convex shape (vertex)
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static const int POLY_VCONVEX = 4096;
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// Convex shape (central)
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static const int POLY_CCONVEX = 8192;
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vector<hyperpoint> hpc;
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int prehpc;
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@ -271,7 +276,15 @@ void setmatrix(int useV, const transmatrix& V) {
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else
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glhr::id_modelview();
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}
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#ifndef MINIMIZE_GL_CALLS
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#ifdef EMSCRIPTEN
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#define MINIMIZE_GL_CALLS 1
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#else
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#define MINIMIZE_GL_CALLS 0
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#endif
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#endif
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void gldraw(int useV, const transmatrix& V, const vector<glvertex>& v, int ps, int pq, int col, int outline, int flags, textureinfo *tinf) {
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if(tinf) {
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@ -303,50 +316,55 @@ void gldraw(int useV, const transmatrix& V, const vector<glvertex>& v, int ps, i
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setmatrix(useV, V);
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if(draw) {
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#ifdef DIRTY
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#warning dirty
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glhr::vertices(v);
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glhr::color2(col);
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glDrawArrays(tinf ? GL_TRIANGLES : GL_TRIANGLE_FAN, ps, pq);
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#else
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glEnable(GL_STENCIL_TEST);
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glColorMask( GL_FALSE,GL_FALSE,GL_FALSE,GL_FALSE );
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glhr::set_depthtest(false);
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glStencilOp( GL_INVERT, GL_INVERT, GL_INVERT);
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glStencilFunc( GL_ALWAYS, 0x1, 0x1 );
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glhr::color2(0xFFFFFFFF);
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glDrawArrays(tinf ? GL_TRIANGLES : GL_TRIANGLE_FAN, ps, pq);
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stereo::set_mask(ed);
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glhr::color2(col);
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glhr::set_depthtest(model_needs_depth());
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if(flags & POLY_INVERSE) {
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glStencilOp( GL_ZERO, GL_ZERO, GL_ZERO);
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glStencilFunc( GL_NOTEQUAL, 1, 1);
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GLfloat xx = vid.xres;
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GLfloat yy = vid.yres;
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vector<glvertex> scr = {
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make_array<GLfloat>(-xx, -yy, stereo::scrdist),
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make_array<GLfloat>(+xx, -yy, stereo::scrdist),
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make_array<GLfloat>(+xx, +yy, stereo::scrdist),
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make_array<GLfloat>(-xx, +yy, stereo::scrdist)
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};
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glhr::vertices(scr);
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glhr::id_modelview();
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glDrawArrays(tinf ? GL_TRIANGLES : GL_TRIANGLE_FAN, 0, 4);
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if((flags & POLY_VCONVEX) && MINIMIZE_GL_CALLS) {
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glhr::vertices(v);
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setmatrix(useV, V);
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}
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else {
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glStencilOp( GL_ZERO, GL_ZERO, GL_ZERO);
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glStencilFunc( GL_EQUAL, 1, 1);
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glhr::color2(col);
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glDrawArrays(tinf ? GL_TRIANGLES : GL_TRIANGLE_FAN, ps, pq);
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}
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glDisable(GL_STENCIL_TEST);
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#endif
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else if((flags & POLY_CCONVEX) && MINIMIZE_GL_CALLS) {
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glhr::vertices(v);
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glhr::color2(col);
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glDrawArrays(tinf ? GL_TRIANGLES : GL_TRIANGLE_FAN, ps-1, pq+1);
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}
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else {
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glEnable(GL_STENCIL_TEST);
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glColorMask( GL_FALSE,GL_FALSE,GL_FALSE,GL_FALSE );
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glhr::set_depthtest(false);
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glStencilOp( GL_INVERT, GL_INVERT, GL_INVERT);
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glStencilFunc( GL_ALWAYS, 0x1, 0x1 );
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glhr::color2(0xFFFFFFFF);
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glDrawArrays(tinf ? GL_TRIANGLES : GL_TRIANGLE_FAN, ps, pq);
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stereo::set_mask(ed);
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glhr::color2(col);
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glhr::set_depthtest(model_needs_depth());
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if(flags & POLY_INVERSE) {
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glStencilOp( GL_ZERO, GL_ZERO, GL_ZERO);
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glStencilFunc( GL_NOTEQUAL, 1, 1);
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GLfloat xx = vid.xres;
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GLfloat yy = vid.yres;
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vector<glvertex> scr = {
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make_array<GLfloat>(-xx, -yy, stereo::scrdist),
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make_array<GLfloat>(+xx, -yy, stereo::scrdist),
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make_array<GLfloat>(+xx, +yy, stereo::scrdist),
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make_array<GLfloat>(-xx, +yy, stereo::scrdist)
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};
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glhr::vertices(scr);
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glhr::id_modelview();
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glDrawArrays(tinf ? GL_TRIANGLES : GL_TRIANGLE_FAN, 0, 4);
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glhr::vertices(v);
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setmatrix(useV, V);
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}
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else {
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glStencilOp( GL_ZERO, GL_ZERO, GL_ZERO);
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glStencilFunc( GL_EQUAL, 1, 1);
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glDrawArrays(tinf ? GL_TRIANGLES : GL_TRIANGLE_FAN, ps, pq);
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}
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glDisable(GL_STENCIL_TEST);
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}
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}
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if(outline) {
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@ -603,7 +621,7 @@ void drawpolyline(polytodraw& p) {
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#if CAP_GL
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if(vid.usingGL && pmodel == mdDisk && !spherespecial) {
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glLineWidth(linewidthat(tC0(pp.V), pp.minwidth));
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gldraw(1, pp.V, *pp.tab, pp.offset, pp.cnt, p.col, pp.outline, 0, pp.tinf);
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gldraw(1, pp.V, *pp.tab, pp.offset, pp.cnt, p.col, pp.outline, pp.flags &~ POLY_INVERSE, pp.tinf);
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return;
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}
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#endif
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@ -1205,6 +1223,8 @@ hyperpoint turtlevertex(int u, double x, double y, double z) {
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return hpxd(scale, x, y, z);
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}
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vector<hpcshape*> allshapes;
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void finishshape() {
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last->e = size(hpc);
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double area = 0;
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@ -1212,6 +1232,28 @@ void finishshape() {
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area += hpc[i][0] * hpc[i+1][1] - hpc[i+1][0] * hpc[i][1];
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if(abs(area) < 1e-9) last->flags |= POLY_ISSIDE;
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if(area >= 0) last->flags |= POLY_INVERSE;
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bool allplus = true, allminus = true;
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for(int i=last->s; i<last->e-1; i++) {
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ld v = hpc[i][0] * hpc[i+1][1] - hpc[i+1][0] * hpc[i][1];
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if(v > 1e-6) allplus = false;
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if(v < -1e-6) allminus = false;
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}
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if(allminus || allplus) last->flags |= POLY_CCONVEX;
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allplus = true, allminus = true;
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ld cx = hpc[last->s][0], cy = hpc[last->s][1];
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for(int i=last->s; i<last->e-1; i++) {
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ld v = (hpc[i][0]-cx) * (hpc[i+1][1]-cy) - (hpc[i+1][0]-cx) * (hpc[i][1]-cy);
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if(v > 1e-6) allplus = false;
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if(v < -1e-6) allminus = false;
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}
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if(allminus || allplus) last->flags |= POLY_VCONVEX;
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allshapes.push_back(last);
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/* if(isnan(area)) ;
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else if(intval(hpc[last->s], hpc[last->e-1]) > 1e-6)
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printf("bad end\n"); */
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@ -1219,6 +1261,7 @@ void finishshape() {
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void bshape(hpcshape& sh, int p) {
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if(last) finishshape();
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hpc.push_back(hpxy(0,0));
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last = &sh;
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last->s = size(hpc), last->prio = p;
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last->flags = 0;
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@ -1360,6 +1403,7 @@ ld dlow_table[SIDEPARS], dhi_table[SIDEPARS];
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void buildpolys() {
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symmetriesAt.clear();
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allshapes.clear();
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geom3::compute();
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gp::clear_plainshapes();
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DEBB(DF_INIT, (debugfile,"buildpolys\n"));
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@ -2186,8 +2230,21 @@ void buildpolys() {
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static int qhpc0;
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int qhpc = size(hpc);
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if(qhpc != qhpc0 && debug_geometry)
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if(qhpc != qhpc0 && debug_geometry) {
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printf("qhpc = %d (%d+%d)\n", qhpc0 = qhpc, prehpc, qhpc-prehpc);
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printf("shapes = %d\n", size(allshapes));
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int inve=0, issi=0, vcon=0, ccon=0;
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for(auto sh: allshapes) {
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if(sh->flags & POLY_INVERSE) inve++;
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if(sh->flags & POLY_ISSIDE) issi++;
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if(sh->flags & POLY_VCONVEX) vcon++;
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if(sh->flags & POLY_CCONVEX) ccon++;
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}
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printf("triangle flags = %x\n", shTriangle.flags);
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printf("plain floor flags = %x\n", shFloor.b[0].flags);
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printf("ball flags = %x\n", shDisk.flags);
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printf("inverse = %d isside = %d vcon = %d ccon = %d\n", inve, issi, vcon, ccon);
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}
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initPolyForGL();
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}
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