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ray:: transparent walls

This commit is contained in:
Zeno Rogue 2019-10-26 10:54:26 +02:00
parent f044544c24
commit df48abe6b1
1 changed files with 26 additions and 8 deletions
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34
raycaster.cpp
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@ -189,6 +189,8 @@ void enable_raycaster() {
else fmain +=
" mat4 vw = uStart;\n"
" vec4 at0 = at;\n"
" gl_FragColor = vec4(0,0,0,1);\n"
" float left = 1.;\n"
" at0.y = -at.y;\n"
" at0.w = 0.;\n"
" at0.xyz = at0.xyz / length(at0.xyz);\n";
@ -250,7 +252,7 @@ void enable_raycaster() {
" if(dist < 0.) { dist = 0.; }\n";
fmain +=
" if(which == -1 && dist == 0.) { gl_FragColor = vec4(0., 0., 0., 1.); return; }";
" if(which == -1 && dist == 0.) return;";
}
// shift d units
@ -396,7 +398,7 @@ void enable_raycaster() {
" if(col[3] > 0.0) {\n"
" vec2 inface = map_texture(position, which);\n"
" vec3 tmap = texture2D(tTextureMap, u).rgb;\n"
" if(tmap.z == 0.) col.xyz *= min(1., (1.-inface.x-inface.y)/ 0.5);\n"
" if(tmap.z == 0.) col.xyz *= min(1., (1.-inface.x)/ tmap.x);\n"
" else {\n"
" vec2 inface2 = tmap.xy + tmap.z * inface;\n"
" col.xyz *= texture2D(tTexture, inface2).rgb;\n"
@ -407,9 +409,9 @@ void enable_raycaster() {
" if(abs(abs(position.x)-abs(position.y)) < .005) col.xyz /= 2.;\n";
fmain +=
" col.w = 1.;\n"
" gl_FragColor = col;\n"
" return;\n"
" gl_FragColor.xyz += left * col.xyz * col.w;\n"
" if(col.w == 1.) return;\n"
" left *= (1. - col.w);\n"
" }\n";
// next cell
@ -420,9 +422,15 @@ void enable_raycaster() {
" tangent = uM[mid] * uM[which] * tangent;\n"
" cid = connection.xy;\n";
if(use_reflect) fmain +=
" if(reflect) {\n"
" if(which == 0 || which == 4) tangent.x = -tangent.x;\n"
" else if(which == 1 || which == 5) tangent.y = -tangent.y;\n"
" else tangent.z = -tangent.z;\n"
" }\n";
fmain +=
" }"
" gl_FragColor = vec4(0.,0.,0.,1.); \n"
" }";
fsh += fmain;
@ -558,8 +566,18 @@ EX void cast() {
else
texturemap[u] = glhr::makevertex(0.1,0,0);
}
else
wallcolor[u] = glhr::acolor(0);
else {
color_t col = transcolor(c, c1, winf[c->wall].color) | transcolor(c1, c, winf[c1->wall].color);
if(col == 0)
wallcolor[u] = glhr::acolor(0);
else {
int dv = get_darkval(c1, c->c.spin(i));
float p = 1 - dv / 16.;
wallcolor[u] = glhr::acolor(col);
for(int a: {0,1,2}) wallcolor[u][a] *= p;
texturemap[u] = glhr::makevertex(0.001,0,0);
}
}
transmatrix T = currentmap->relative_matrix(c->master, c1->master) * inverse(ms[i]);
for(int k=0; k<=isize(ms); k++) {