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raycaster:: work with many tile shapes

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This commit is contained in:
Zeno Rogue 2021-05-17 14:21:14 +02:00
parent 809d1510c2
commit 8681883e58
1 changed files with 148 additions and 45 deletions
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181
raycaster.cpp
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@ -15,7 +15,7 @@ EX namespace ray {
#if CAP_RAY
/** texture IDs */
GLuint txConnections = 0, txWallcolor = 0, txTextureMap = 0, txVolumetric = 0;
GLuint txConnections = 0, txWallcolor = 0, txTextureMap = 0, txVolumetric = 0, txM = 0, txWall = 0;
EX bool in_use;
EX bool comparison_mode;
@ -157,10 +157,16 @@ struct raycaster : glhr::GLprogram {
GLint uProjection;
GLint uEyeShift, uAbsUnit;
GLint tM, uInvLengthM;
GLint tWall, uInvLengthWall;
raycaster(string vsh, string fsh);
};
#endif
bool m_via_texture = true;
bool wall_via_texture = true;
raycaster::raycaster(string vsh, string fsh) : GLprogram(vsh, fsh) {
println(hlog, "assigning");
uStart = glGetUniformLocation(_program, "uStart");
@ -192,6 +198,12 @@ raycaster::raycaster(string vsh, string fsh) : GLprogram(vsh, fsh) {
tTextureMap = glGetUniformLocation(_program, "tTextureMap");
tVolumetric = glGetUniformLocation(_program, "tVolumetric");
tM = glGetUniformLocation(_program, "tM");
uInvLengthM = glGetUniformLocation(_program, "uInvLengthM");
tWall = glGetUniformLocation(_program, "tWall");
uInvLengthWall = glGetUniformLocation(_program, "uInvLengthWall");
uWallOffset = glGetUniformLocation(_program, "uWallOffset");
uSides = glGetUniformLocation(_program, "uSides");
@ -263,6 +275,27 @@ void enable_raycaster() {
saved_state = state;
}
auto getM = [] (string s) {
if(m_via_texture)
return "getM(" + s + ")";
else
return "uM[" + s + "]";
};
auto getWall = [] (string s, int coord) {
if(wall_via_texture)
return "getWall(" + s + "," + its(coord) + ")";
else
return "uWall" + string(coord?"Y" : "X") + "[" + s + "]";
};
auto getWallstart = [] (string s) {
if(wall_via_texture)
return "getWallstart(" + s + ")";
else
return "uWallstart[" + s + "]";
};
wall_offset(centerover); /* so raywall is not empty and deg is not zero */
deg = 0;
@ -294,23 +327,56 @@ void enable_raycaster() {
"uniform mediump int uLength;\n"
"uniform mediump float uIPD;\n"
"uniform mediump mat4 uStart;\n"
"uniform mediump mat4 uM[" + its(gms_limit) + "];\n"
"uniform mediump vec2 uStartid;\n"
"uniform mediump sampler2D tConnections;\n"
"uniform mediump sampler2D tWallcolor;\n"
"uniform mediump sampler2D tVolumetric;\n"
"uniform mediump sampler2D tTexture;\n"
"uniform mediump sampler2D tTextureMap;\n"
"uniform mediump vec4 uFogColor;\n"
"uniform mediump float uLinearSightRange, uExpStart, uExpDecay;\n";
if(wall_via_texture) {
fsh +=
"uniform mediump sampler2D tWall;\n"
"uniform mediump float uInvLengthWall;\n"
"mediump vec4 getWall(mediump int x, mediump int coord) {\n"
" vec4 result;\n"
" vec4 v = texture2D(tWall, vec2((float(x)+.5) * uInvLengthWall, (float(coord)+.5) / 4.));\n"
" for(int j=0; j<4; j++) result[j] = (v[j] - .5) * 8.;\n"
" return result;\n"
" }\n"
"mediump int getWallstart(mediump int x) {\n"
" vec4 v = texture2D(tWall, vec2((float(x)+.5) * uInvLengthWall, 0.625));\n"
" return int(v[0] / uInvLengthWall);\n"
" }\n";
}
else fsh +=
"uniform mediump vec4 uWallX["+rays+"];\n"
"uniform mediump vec4 uWallY["+rays+"];\n"
"uniform mediump vec4 uFogColor;\n"
"uniform mediump int uWallstart["+its(isize(cgi.wallstart))+"];\n"
"uniform mediump float uLinearSightRange, uExpStart, uExpDecay;\n";
"uniform mediump int uWallstart["+its(isize(cgi.wallstart))+"];\n";
if(m_via_texture) {
fsh +=
"uniform mediump sampler2D tM;\n"
"uniform mediump float uInvLengthM;\n"
"mediump mat4 getM(mediump int x) {\n"
" mat4 result;\n"
" for(int i=0; i<4; i++) {\n"
" vec4 v = texture2D(tM, vec2((float(x)+.5) * uInvLengthM, (float(i)+.5) / 4.));\n"
" for(int j=0; j<4; j++) result[j][i] = (v[j] - .5) * 8.;\n"
" }\n"
" return result;\n"
" }\n";
}
else fsh +=
"uniform mediump mat4 uM[" + its(gms_limit) + "];\n";
#ifdef GLES_ONLY
fsh += build_getter("mediump vec4", "uWallX", irays);
fsh += build_getter("mediump vec4", "uWallY", irays);
fsh += build_getter("mediump int", "uWallstart", deg+1);
if(!m_via_texture)
fsh += build_getter("mediump mat4", "uM", gms_limit);
#endif
@ -387,11 +453,11 @@ void enable_raycaster() {
"pos = vec4(pos.x/pos.z, pos.y/pos.z, pos.w, 0);\n";
fsh +=
"int s = " GET("uWallstart", "which") ";\n"
"int e = " GET("uWallstart", "which+1") ";\n"
"int s = " + getWallstart("which") + ";\n"
"int e = " + getWallstart("which+1") + ";\n"
"for(int ix=0; ix<16; ix++) {\n"
"int i = s+ix; if(i >= e) break;\n"
"mediump vec2 v = vec2(dot(" GET("uWallX", "i") ", pos), dot(" GET("uWallY", "i") ", pos));\n"
"mediump vec2 v = vec2(dot(" + getWall("i", 0) + ", pos), dot(" + getWall("i", 1) + ", pos));\n"
"if(v.x >= 0. && v.y >= 0. && v.x + v.y <= 1.) return vec2(v.x+v.y, v.x-v.y);\n"
"}\n"
"return vec2(1, 1);\n"
@ -553,7 +619,7 @@ void enable_raycaster() {
" if(go == 0.) {\n"
" mediump float best = len(position);\n"
" for(int i=0; i<sides; i++) {\n"
" mediump float cand = len(uM[i] * position);\n"
" mediump float cand = len(" + getM("i") + " * position);\n"
" if(cand < best - .001) { dist = 0.; best = cand; which = i; }\n"
" }\n"
" }\n";
@ -568,46 +634,47 @@ void enable_raycaster() {
// fmain += "int woi = walloffset+i;\n";
if(in_h2xe()) fmain +=
" mediump float v = ((position - uM[woi] * position)[2] / (uM[woi] * tangent - tangent)[2]);\n"
" mediump float v = ((position - " + getM("woi") + " * position)[2] / (" + getM("woi") + " * tangent - tangent)[2]);\n"
" if(v > 1. || v < -1.) continue;\n"
" mediump float d = atanh(v);\n"
" mediump vec4 next_tangent = position * sinh(d) + tangent * cosh(d);\n"
" if(next_tangent[2] < (uM[woi] * next_tangent)[2]) continue;\n"
" if(next_tangent[2] < (" + getM("woi") + " * next_tangent)[2]) continue;\n"
" d /= xspeed;\n";
else if(in_s2xe()) fmain +=
" mediump float v = ((position - uM[woi] * position)[2] / (uM[woi] * tangent - tangent)[2]);\n"
" mediump float v = ((position - " + getM("woi") + " * position)[2] / (" + getM("woi") + " * tangent - tangent)[2]);\n"
" mediump float d = atan(v);\n"
" mediump vec4 next_tangent = tangent * cos(d) - position * sin(d);\n"
" if(next_tangent[2] > (uM[woi] * next_tangent)[2]) continue;\n"
" if(next_tangent[2] > (" + getM("woi") + " * next_tangent)[2]) continue;\n"
" d /= xspeed;\n";
else if(in_e2xe()) fmain +=
" mediump float deno = dot(position, tangent) - dot(uM[woi]*position, uM[woi]*tangent);\n"
" mediump float deno = dot(position, tangent) - dot(" + getM("woi") + "*position, " + getM("woi") + "*tangent);\n"
" if(deno < 1e-6 && deno > -1e-6) continue;\n"
" mediump float d = (dot(uM[woi]*position, uM[woi]*position) - dot(position, position)) / 2. / deno;\n"
" mediump float d = (dot(" + getM("woi") + "*position, " + getM("woi") + "*position) - dot(position, position)) / 2. / deno;\n"
" if(d < 0.) continue;\n"
" mediump vec4 next_position = position + d * tangent;\n"
" if(dot(next_position, tangent) < dot(uM[woi]*next_position, uM[woi]*tangent)) continue;\n"
" if(dot(next_position, tangent) < dot(" + getM("woi") + "*next_position, " + getM("woi") + "*tangent)) continue;\n"
" d /= xspeed;\n";
else if(hyperbolic) fmain +=
" mediump float v = ((position - uM[woi] * position)[3] / (uM[woi] * tangent - tangent)[3]);\n"
" mediump float v = ((position - " + getM("woi") + " * position)[3] / (" + getM("woi") + " * tangent - tangent)[3]);\n"
" if(v > 1. || v < -1.) continue;\n"
" mediump float d = atanh(v);\n"
" mediump vec4 next_tangent = position * sinh(d) + tangent * cosh(d);\n"
" if(next_tangent[3] < (uM[woi] * next_tangent)[3]) continue;\n";
" if(next_tangent[3] < (" + getM("woi") + " * next_tangent)[3]) continue;\n";
else if(sphere) fmain +=
" mediump float v = ((position - uM[woi] * position)[3] / (uM[woi] * tangent - tangent)[3]);\n"
" mediump float v = ((position - " + getM("woi") + " * position)[3] / (" + getM("woi") + " * tangent - tangent)[3]);\n"
" mediump float d = atan(v);\n"
" mediump vec4 next_tangent = -position * sin(d) + tangent * cos(d);\n"
" if(next_tangent[3] > (uM[woi] * next_tangent)[3]) continue;\n";
" if(next_tangent[3] > (" + getM("woi") + " * next_tangent)[3]) continue;\n";
else fmain +=
" mediump float deno = dot(position, tangent) - dot(uM[woi]*position, uM[woi]*tangent);\n"
" mediump float deno = dot(position, tangent) - dot(" + getM("woi") + "*position, " + getM("woi") + "*tangent);\n"
" if(deno < 1e-6 && deno > -1e-6) continue;\n"
" mediump float d = (dot(uM[woi]*position, uM[woi]*position) - dot(position, position)) / 2. / deno;\n"
" mediump float d = (dot(" + getM("woi") + "*position, " + getM("woi") + "*position) - dot(position, position)) / 2. / deno;\n"
" if(d < 0.) continue;\n"
" mediump vec4 next_position = position + d * tangent;\n"
" if(dot(next_position, tangent) < dot(uM[woi]*next_position, uM[woi]*tangent)) continue;\n";
" if(dot(next_position, tangent) < dot(" + getM("woi") + "*next_position, " + getM("woi") + "*tangent)) continue;\n";
replace_str(fmain, "[woi]", "[walloffset+i]");
replace_str(fmain, "(woi)", "(walloffset+i)");
fmain +=
" if(d < dist) { dist = d; which = i; }\n"
@ -615,12 +682,13 @@ void enable_raycaster() {
if(hyperbolic && reg3::ultra_mirror_in()) {
fmain += "for(int i="+its(S7*2)+"; i<"+its(S7*2+isize(cgi.vertices_only))+"; i++) {\n";
fmain += "mat4 uMi = " + getM("i") + ";";
fmain +=
" mediump float v = ((position - uM[i] * position)[3] / (uM[i] * tangent - tangent)[3]);\n"
" mediump float v = ((position - uMi * position)[3] / (uMi * tangent - tangent)[3]);\n"
" if(v > 1. || v < -1.) continue;\n"
" mediump float d = atanh(v);\n"
" mediump vec4 next_tangent = position * sinh(d) + tangent * cosh(d);\n"
" if(next_tangent[3] < (uM[i] * next_tangent)[3]) continue;\n"
" if(next_tangent[3] < (uMi * next_tangent)[3]) continue;\n"
" if(d < dist) { dist = d; which = i; }\n"
"}\n";
}
@ -1007,15 +1075,15 @@ void enable_raycaster() {
fmain +=
" mediump float best = len(nposition);\n"
" for(int i=0; i<sides"+s+"; i++) {\n"
" mediump float cand = len(uM[walloffset+i] * nposition);\n"
" mediump float cand = len(" + getM("walloffset+i") + " * nposition);\n"
" if(cand < best) { best = cand; which = i; }\n"
" }\n";
if(rotspace) fmain +=
" if(which == -1) {\n"
" best = len_h(nposition);\n"
" mediump float cand1 = len_h(uM[walloffset+sides-2]*nposition);\n"
" mediump float cand1 = len_h(" + getM("walloffset+sides-2") + "*nposition);\n"
" if(cand1 < best) { best = cand1; which = sides-2; }\n"
" mediump float cand2 = len_h(uM[walloffset+sides-1]*nposition);\n"
" mediump float cand2 = len_h(" + getM("walloffset+sides-1") + "*nposition);\n"
" if(cand2 < best) { best = cand2; which = sides-1; }\n"
" }\n";
if(prod) {
@ -1060,14 +1128,14 @@ void enable_raycaster() {
"if(sp.z > 1.) {\n"
"mediump float best = 999.;\n"
"for(int i=0; i<4; i++) {\n"
"mediump float cand = len(uStraighten * uM[i] * position);\n"
"mediump float cand = len(uStraighten * " + getM("i") + " * position);\n"
"if(cand < best) { best = cand; which = i;}\n"
"}\n"
"}\n"
"if(sp.z < -1.) {\n"
"mediump float best = 999.;\n"
"for(int i=6; i<10; i++) {\n"
"mediump float cand = len(uStraighten * uM[i] * position);\n"
"mediump float cand = len(uStraighten * " + getM("i") + " * position);\n"
"if(cand < best) { best = cand; which = i;}\n"
"}\n"
"}\n";
@ -1151,14 +1219,14 @@ void enable_raycaster() {
"if(which == 20) {\n"
" mediump float best = 999.;\n"
" for(int i="+its(flat2)+"; i<"+its(S7)+"; i++) {\n"
" mediump float cand = len(uM[i] * position);\n"
" mediump float cand = len(" + getM("i") + " * position);\n"
" if(cand < best) { best = cand; which = i; }\n"
" }\n"
"}\n"
"if(which == 21) {\n"
"mediump float best = 999.;\n"
"for(int i=0; i<"+its(flat1)+"; i++) {\n"
" mediump float cand = len(uM[i] * position);\n"
" mediump float cand = len(" + getM("i") + " * position);\n"
" if(cand < best) { best = cand; which = i; }\n"
" }\n"
// "gl_FragColor = vec4(.5 + .5 * sin((go+dist)*100.), 1, float(which)/3., 1); return;\n"
@ -1184,7 +1252,7 @@ void enable_raycaster() {
if(reg3::ultra_mirror_in()) fmain +=
"if(which >= " + its(S7) + ") {"
" tangent = uM[which] * tangent;\n"
" tangent = " + getM("which") + " * tangent;\n"
" continue;\n"
" }\n";
@ -1324,7 +1392,7 @@ void enable_raycaster() {
" }\n";
else fmain +=
" if(reflect) {\n"
" tangent = uM["+its(deg)+"+which] * tangent;\n"
" tangent = " + getM(its(deg)+"+which") + " * tangent;\n"
" continue;\n"
" }\n";
}
@ -1340,7 +1408,7 @@ void enable_raycaster() {
fmain +=
" int mid = int(connection.z * 1024.);\n"
" mediump mat4 m = " GET("uM", "mid") " * " GET("uM", "walloffset+which") ";\n";
" mediump mat4 m = " + getM("mid") + " * " + getM("walloffset+which") + ";\n";
if(eyes)
fmain += " vw = m * vw;\n";
@ -1651,9 +1719,22 @@ struct raycast_map {
glUniform1i(o->uLength, length);
GLERR("uniform mediump length");
if(m_via_texture) {
int mlength = next_p2(isize(ms));
vector<array<float, 4>> m_map;
m_map.resize(4 * mlength);
for(int i=0; i<isize(ms); i++)
for(int a=0; a<4; a++)
for(int b=0; b<4; b++)
m_map[i+a*mlength][b] = ms[i][a][b]/8 + .5;
bind_array(m_map, o->tM, txM, 7, mlength);
glUniform1f(o->uInvLengthM, 1. / mlength);
}
else {
vector<glhr::glmatrix> gms;
for(auto& m: ms) gms.push_back(glhr::tmtogl_transpose3(m));
glUniformMatrix4fv(o->uM, isize(gms), 0, gms[0].as_array());
}
bind_array(wallcolor, o->tWallcolor, txWallcolor, 4, length);
bind_array(connections, o->tConnections, txConnections, 3, length);
@ -1806,18 +1887,40 @@ EX void cast() {
glUniform1i(o->uSides, cs->type + (WDIM == 2 ? 2 : 0));
}
vector<GLint> wallstart;
for(auto i: cgi.wallstart) wallstart.push_back(i);
glUniform1iv(o->uWallstart, isize(wallstart), &wallstart[0]);
vector<glvertex> wallx, wally;
for(auto& m: cgi.raywall) {
wallx.push_back(glhr::pointtogl(m[0]));
wally.push_back(glhr::pointtogl(m[1]));
}
if(wall_via_texture) {
int wlength = next_p2(isize(wallx));
vector<array<float, 4>> w_map;
w_map.resize(4 * wlength);
ld minval = 9, maxval = -9;
for(int i=0; i<isize(wallx); i++) {
for(int a=0; a<4; a++) {
w_map[i][a] = wallx[i][a]/8 + .5;
w_map[i+wlength][a] = wally[i][a]/8 + .5;
minval = min<ld>(minval, w_map[i][a]);
minval = min<ld>(minval, w_map[i+wlength][a]);
maxval = max<ld>(maxval, w_map[i][a]);
maxval = max<ld>(maxval, w_map[i+wlength][a]);
}
}
// println(hlog, "wallrange = ", tie(minval, maxval), " wallx = ", isize(wallx), " wallstart = ", isize(cgi.wallstart));
for(int i=0; i<isize(cgi.wallstart); i++)
w_map[i+2*wlength][0] = (cgi.wallstart[i]+.5) / wlength;
bind_array(w_map, o->tWall, txWall, 8, wlength);
glUniform1f(o->uInvLengthWall, 1. / wlength);
}
else {
vector<GLint> wallstart;
for(auto i: cgi.wallstart) wallstart.push_back(i);
glUniform1iv(o->uWallstart, isize(wallstart), &wallstart[0]);
glUniform4fv(o->uWallX, isize(wallx), &wallx[0][0]);
glUniform4fv(o->uWallY, isize(wally), &wally[0][0]);
}
if(o->uLevelLines != -1)
glUniform1f(o->uLevelLines, levellines);