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ray:: added constants ray_scale, max_wall_offset and max_celltype to textures-as-arrays

This commit is contained in:
Zeno Rogue 2021-07-07 23:33:34 +02:00
parent 3e1e0f3f18
commit 4590271450
1 changed files with 16 additions and 8 deletions
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24
raycaster.cpp
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@ -279,6 +279,10 @@ tuple<
decltype(raycaster_state()) saved_state;
ld ray_scale = 8;
int max_wall_offset = 512;
int max_celltype = 64;
void enable_raycaster() {
using glhr::to_glsl;
auto state = raycaster_state();
@ -355,7 +359,7 @@ void enable_raycaster() {
"mediump vec4 getWall(mediump int x, mediump int coord) {\n"
" mediump vec4 result;\n"
" mediump 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"
" for(int j=0; j<4; j++) result[j] = (v[j] - .5) * " + to_glsl(ray_scale) + ";\n"
" return result;\n"
" }\n"
"mediump int getWallstart(mediump int x) {\n"
@ -376,7 +380,7 @@ void enable_raycaster() {
" mediump mat4 result;\n"
" for(int i=0; i<4; i++) {\n"
" mediump 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"
" for(int j=0; j<4; j++) result[j][i] = (v[j] - .5) * " + to_glsl(ray_scale) + ";\n"
" }\n"
" return result;\n"
" }\n";
@ -1439,8 +1443,8 @@ void enable_raycaster() {
if(many_cell_types) {
fmain +=
"walloffset = int(connection.w * 256.);\n"
"sides = int(connection.w * 4096.) - 16 * walloffset;\n";
"walloffset = int(connection.w * " + to_glsl(max_wall_offset) + ");\n"
"sides = int(connection.w * " + to_glsl(max_wall_offset * max_celltype) + ") - " + its(max_celltype) + " * walloffset;\n";
// fmain += "if(sides != 8) { gl_FragColor = vec4(.5,float(sides)/8.,.5,1); return; }";
}
@ -1702,7 +1706,11 @@ struct raycast_map {
connections[u][2] = (k+.5) / 1024.;
break;
}
connections[u][3] = (wall_offset(c1) / 256.) + (c1->type + (WDIM == 2 ? 2 : 0) + .5) / 4096.;
if(wall_offset(c1) >= max_wall_offset)
println(hlog, "error: wall_offset exceeds ", max_wall_offset);
if(c1->type >= max_celltype)
println(hlog, "error: type " + its(c1->type) + " exceeds ", max_celltype);
connections[u][3] = (wall_offset(c1) * 1. / max_wall_offset) + (c1->type + (WDIM == 2 ? 2 : 0) + .5) * 1. / max_wall_offset / max_celltype;
}
if(WDIM == 2) for(int a: {0, 1}) {
celldrawer dd;
@ -1742,7 +1750,7 @@ struct raycast_map {
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;
m_map[i+a*mlength][b] = ms[i][a][b]/ray_scale + .5;
bind_array(m_map, o->tM, txM, 7, mlength);
glUniform1f(o->uInvLengthM, 1. / mlength);
}
@ -1916,8 +1924,8 @@ EX void cast() {
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;
w_map[i][a] = wallx[i][a]/ray_scale + .5;
w_map[i+wlength][a] = wally[i][a]/ray_scale + .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]);