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equirectangular projection in raycasting

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Zeno Rogue
2023-11-23 22:10:59 +01:00
parent 45a9e0c85a
commit 9d4d085973
3 changed files with 16 additions and 2 deletions
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16
raycaster.cpp
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@@ -1952,6 +1952,10 @@ void raygen::create() {
if(use_reflect) fmain += " bool depthtoset = true;\n";
fmain +=
" mediump float left = 1.;\n"
" gl_FragColor = vec4(0,0,0,1);\n";
if(IN_ODS) fmain +=
" mediump float lambda = at[0];\n" // -PI to PI
" mediump float phi;\n"
@@ -1960,13 +1964,18 @@ void raygen::create() {
" else { phi = at.y - PI/2.; eye = -uIPD / 2.; }\n"
" mediump mat4 vw = uStart * xzspin(-lambda) * "+f_xpush()+"(eye) * yzspin(phi);\n"
" mediump vec4 at0 = vec4(0., 0., 1., 0.);\n";
// todo: will not work in product!
else if(equirectangular) fmain +=
" mediump float lambda = at.x * PI;\n" // -PI to PI
" mediump float phi = at.y * PI / 2.0;\n"
" mediump mat4 vw = uStart;\n"
" mediump vec4 at0 = xzspin(-lambda) * yzspin(phi) * vec4(0., 0., 1., 0.);\n";
else {
fmain +=
" mediump mat4 vw = uStart;\n"
" mediump vec4 at0 = at;\n"
" gl_FragColor = vec4(0,0,0,1);\n"
" mediump float left = 1.;\n"
" at0.y = -at.y;\n"
" at0.w = 0.;\n";
@@ -2570,6 +2579,9 @@ EX void cast() {
#else
if(0) ;
#endif
else if(equirectangular) {
glUniformMatrix4fv(o->uProjection, 1, 0, glhr::tmtogl_transpose(Id).as_array());
}
else {
dynamicval<eGeometry> g(geometry, gCubeTiling);
transmatrix proj = Id;