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ray:: texture mapping

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This commit is contained in:
Zeno Rogue 2019-10-26 10:32:44 +02:00
parent 368fbcbf72
commit f044544c24
2 changed files with 44 additions and 15 deletions
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17
floorshapes.cpp
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@ -23,6 +23,7 @@ extern qfloorinfo qfi;
#endif
EX vector<basic_textureinfo> floor_texture_vertices;
EX vector<glvertex> floor_texture_map;
EX struct renderbuffer *floor_textures;
void geometry_information::init_floorshapes() {
@ -963,6 +964,18 @@ void draw_shape_for_texture(floorshape* sh) {
hyperpoint v1 = hpxyz3(0.25, 0.25, 0, 0);
hyperpoint v2 = hpxyz3(0.25, -0.25, 0, 0);
if(1) {
hyperpoint inmodel;
applymodel(center, inmodel);
glvertex tmap;
tmap[0] = (1 + inmodel[0] * vid.scale) / 2;
tmap[1] = (1 - inmodel[1] * vid.scale) / 2;
applymodel(center + v1, inmodel);
tmap[2] = (1 + inmodel[0] * vid.scale) / 2 - tmap[0];
floor_texture_map[sh->id] = tmap;
println(hlog, "for ", sh->id, " set ", tmap);
}
// SL2 needs 6 times more
for(int a=0; a<MAX_EDGE*6; a++)
texture_order([&] (ld x, ld y) {
@ -992,7 +1005,9 @@ void geometry_information::make_floor_textures_here() {
floor_textures = new renderbuffer(vid.xres, vid.yres, vid.usingGL);
resetbuffer rb;
floor_texture_vertices.resize(isize(all_escher_floorshapes) + isize(all_plain_floorshapes));
int q = isize(all_escher_floorshapes) + isize(all_plain_floorshapes);
floor_texture_vertices.resize(q);
floor_texture_map.resize(q);
auto cd = current_display;
cd->xtop = cd->ytop = 0;

42
raycaster.cpp
View File

@ -12,7 +12,7 @@ namespace hr {
EX namespace ray {
/** texture IDs */
GLuint txConnections = 0, txWallcolor = 0;
GLuint txConnections = 0, txWallcolor = 0, txTextureMap = 0;
EX bool in_use;
EX bool comparison_mode;
@ -70,7 +70,7 @@ EX bool requested() {
struct raycaster : glhr::GLprogram {
GLint uStart, uStartid, uM, uLength, uFovX, uFovY, uIPD;
GLint uWallstart, uWallX, uWallY;
GLint tConnections, tWallcolor;
GLint tConnections, tWallcolor, tTextureMap;
GLint uBinaryWidth;
GLint uLinearSightRange, uExpStart, uExpDecay;
@ -96,6 +96,7 @@ struct raycaster : glhr::GLprogram {
tConnections = glGetUniformLocation(_program, "tConnections");
tWallcolor = glGetUniformLocation(_program, "tWallcolor");
tTextureMap = glGetUniformLocation(_program, "tTextureMap");
}
};
@ -129,6 +130,8 @@ void enable_raycaster() {
"uniform vec2 uStartid;\n"
"uniform sampler2D tConnections;\n"
"uniform sampler2D tWallcolor;\n"
"uniform sampler2D tTexture;\n"
"uniform sampler2D tTextureMap;\n"
"uniform vec4 uWallX[60];\n"
"uniform vec4 uWallY[60];\n"
"uniform int uWallstart[16];\n"
@ -167,9 +170,9 @@ void enable_raycaster() {
"int e = uWallstart[which+1];\n"
"for(int i=s; i<e; i++) {\n"
"vec2 v = vec2(dot(uWallX[i], pos), dot(uWallY[i], pos));\n"
"if(v.x >= 0. && v.y >= 0. && v.x + v.y <= 1.) return v;\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(0.5, 0.5);\n"
"return vec2(1, 1);\n"
"}\n";
string fmain = "void main() {\n";
@ -392,19 +395,19 @@ void enable_raycaster() {
" vec4 col = texture2D(tWallcolor, u);\n"
" if(col[3] > 0.0) {\n"
" vec2 inface = map_texture(position, which);\n"
" float bright = min(1., 10. * (1.-inface.x-inface.y));\n" // texture2D(tWallTexture, (inface.yz + vec2(1.,1.))/2.).r;\n"
" bright *= max(1. - go / uLinearSightRange, uExpStart * exp(-go / uExpDecay));\n";
" vec3 tmap = texture2D(tTextureMap, u).rgb;\n"
" if(tmap.z == 0.) col.xyz *= min(1., (1.-inface.x-inface.y)/ 0.5);\n"
" else {\n"
" vec2 inface2 = tmap.xy + tmap.z * inface;\n"
" col.xyz *= texture2D(tTexture, inface2).rgb;\n"
" }\n"
" col.xyz *= max(1. - go / uLinearSightRange, uExpStart * exp(-go / uExpDecay));\n";
if(nil) fmain +=
" if(abs(abs(position.x)-abs(position.y)) < .005) bright /= 2.;\n";
" if(abs(abs(position.x)-abs(position.y)) < .005) col.xyz /= 2.;\n";
fmain +=
// " float bright = min(1., 10. * (1.-inface.x-inface.y));\n" // texture2D(tWallTexture, (inface.yz + vec2(1.,1.))/2.).r;\n"
// " col.xyz = col.xyz * bright * max(1.-go/7., 0.5 * exp(-go/4.));\n" // exp(-go/4.);\n"
" col.xyz = col.xyz * bright;\n"
// " col.xyz = col.xyz * bright * max(1.-go/7., 0.5 * exp(-go/4.));\n" // exp(-go/4.);\n"
" col.w = 1.;\n"
// " if(purp == 1) { col.rgb = (col.rgb + vec3(1., 0., 1.)) / 2; }\n"
" gl_FragColor = col;\n"
" return;\n"
" }\n";
@ -524,6 +527,7 @@ EX void cast() {
vector<array<float, 4>> connections(length * rows);
vector<array<float, 4>> wallcolor(length * rows);
vector<array<float, 4>> texturemap(length * rows);
if(1) for(cell *c: lst) {
int id = ids[c];
@ -531,6 +535,7 @@ EX void cast() {
int u = (id/per_row*length) + (id%per_row * S7) + i;
if(!ids.count(c1)) {
wallcolor[u] = glhr::acolor(color_out_of_range | 0xFF);
texturemap[u] = glhr::makevertex(0.1,0,0);
continue;
}
auto code = enc(ids[c1], 0);
@ -540,11 +545,18 @@ EX void cast() {
celldrawer dd;
dd.cw.at = c1;
dd.setcolors();
transmatrix Vf;
dd.set_land_floor(Vf);
color_t wcol = darkena(dd.wcol, 0, 0xFF);
int dv = get_darkval(c1, c->c.spin(i));
float p = 1 - dv / 16.;
wallcolor[u] = glhr::acolor(wcol);
for(int a: {0,1,2}) wallcolor[u][a] *= p;
if(qfi.fshape) {
texturemap[u] = floor_texture_map[qfi.fshape->id];
}
else
texturemap[u] = glhr::makevertex(0.1,0,0);
}
else
wallcolor[u] = glhr::acolor(0);
@ -586,15 +598,17 @@ EX void cast() {
bind_array(wallcolor, o->tWallcolor, txWallcolor, 4);
bind_array(connections, o->tConnections, txConnections, 3);
bind_array(texturemap, o->tTextureMap, txTextureMap, 5);
glVertexAttribPointer(hr::aPosition, 4, GL_FLOAT, GL_FALSE, sizeof(glvertex), &screen[0]);
glhr::set_depthtest(false);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glActiveTexture(GL_TEXTURE0 + 0);
glBindTexture(GL_TEXTURE_2D, floor_textures->renderedTexture);
glDrawArrays(GL_TRIANGLES, 0, 6);
GLERR("finish");
glActiveTexture(GL_TEXTURE0 + 0);
}
EX void configure() {