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add missing regression tests in last commit

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This commit is contained in:
Rudolf Polzer 2011-01-11 14:52:09 +01:00
parent 94cb905da9
commit b188aed61b
16 changed files with 843 additions and 0 deletions
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16
regression_tests/q3map2/coarse_snap_normal/README.txt Normal file
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DESCRIPTION OF PROBLEM:
=======================
Because of the coarse nature of SnapNormal(), planes that are 0.25 degrees
away from being axial are "snapped" to be axial. The "normal epsilon"
is a very small value by default, and cannot go much smaller (without
running into limits of floating point numbers). The problem with
SnapNormal() is that we compare the components of the normal that are near
1, instead of comaring the components that are near 0. This leads to a very
coarse and inaccurate SnapNormal().
If you open the example map in Radiant, you can see that the red brick should
touch the middle checkered brick at the edge. However, once this map is
compiled, the edges are a significant distance apart. This is due to the
coarse and inaccurate nature of SnapNormal(). Likewise, the green brick should
be flush with the center tiled brick, but it's not.

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regression_tests/q3map2/coarse_snap_normal/maps/coarse_snap_normal.map Normal file
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{
"classname" "worldspawn"
{
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}
{
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( 512 512 512 ) ( 512 -512 512 ) ( 512 -512 -8 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
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( -128 -448 256 ) ( -128 -472 256 ) ( -128 -472 232 ) radiant_regression_tests/green 0 0 0 0.500000 0.500000 0 0 0
}
{
( 192 472 260 ) ( -128 472 260 ) ( -128 448 260 ) radiant_regression_tests/red 0 0 0 0.500000 0.500000 0 0 0
( -128 448 280 ) ( -128 472 280 ) ( 192 472 280 ) radiant_regression_tests/red 0 0 0 0.500000 0.500000 0 0 0
( -128 448 280 ) ( 192 448 280 ) ( 192 448 256 ) radiant_regression_tests/red 0 0 0 0.500000 0.500000 0 0 0
( 192 448 280 ) ( 192 472 280 ) ( 192 472 256 ) radiant_regression_tests/red 0 0 0 0.500000 0.500000 0 0 0
( 192 472 280 ) ( -128 472 280 ) ( -128 472 256 ) radiant_regression_tests/red 0 0 0 0.500000 0.500000 0 0 0
( -128 472 280 ) ( -128 448 280 ) ( -128 448 256 ) radiant_regression_tests/red 0 0 0 0.500000 0.500000 0 0 0
}
}
{
"light" "3000"
"origin" "0 0 384"
"classname" "light"
}
{
"origin" "0 -64 384"
"classname" "info_player_deathmatch"
}

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regression_tests/q3map2/degenerate_winding/README.txt Normal file
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DESCRIPTION OF PROBLEM:
=======================
I'm testing when windings become degenerate.

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regression_tests/q3map2/degenerate_winding/maps/degenerate_winding.map Normal file
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{
"classname" "worldspawn"
{
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{
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}
{
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}
{
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{
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( 256 256 512 ) ( 256 328 512 ) ( 256 328 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
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{
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( 256 -256 512 ) ( -256 -256 512 ) ( -256 -256 0 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( -256 -256 512 ) ( -256 -304 512 ) ( -256 -304 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
}
{
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}
}
{
"light" "1000"
"origin" "-40 0 32"
"classname" "light"
}
{
"origin" "-40 128 96"
"classname" "info_player_deathmatch"
}

14
regression_tests/q3map2/degenerate_winding2/README.txt Normal file
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DESCRIPTION OF PROBLEM:
=======================
The sample map contains a wedge brush. The tip (the sharp edge) of the wedge
is chopped off by 2 planes, leaving very narrow windings. Each of these 2
narrow windings is less than 0.1 units tall. However, the wedge has height
exactly equal to 1/8 unit at the point where it is chopped. Therefore,
the two narrow sides caused by the chops are expected to be degenerate and the
top face of the wedge is expected to be unaffected. This should leave a
"hole" in the narrow part of the wedge.
The hole isn't desirable but it's expected based on the logic in the code.
Still, if there is a hole in the brush, I consider this regression test to
be broken.

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regression_tests/q3map2/degenerate_winding2/maps/degenerate_winding2.map Normal file
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{
"classname" "worldspawn"
{
( 7 0 0 ) ( 7 0 1 ) ( 7 64 1 ) radiant_regression_tests/green 0 0 0 0.500000 0.500000 0 0 0
( 7 0 0 ) ( 7 64 0 ) ( -1 64 0 ) radiant_regression_tests/blue 0 0 0 0.500000 0.500000 0 0 0
( 7 0 1 ) ( 7 0 0 ) ( -1 0 0 ) radiant_regression_tests/green 0 0 0 0.500000 0.500000 0 0 0
( -1 64 0 ) ( 7 64 0 ) ( 7 64 1 ) radiant_regression_tests/green 0 0 0 0.500000 0.500000 0 0 0
( 7 0 1 ) ( -1 0 0 ) ( -1 64 0 ) radiant_regression_tests/blue 0 0 0 0.500000 0.500000 0 0 0
( -1 0 2 ) ( 0 0 0 ) ( 0 64 0 ) radiant_regression_tests/red 0 0 0 0.500000 0.500000 0 0 0
( 1 0 2 ) ( -7 0 -13 ) ( -7 64 -13 ) radiant_regression_tests/red 0 0 0 0.500000 0.500000 0 0 0
}
{
( 128 72 -72 ) ( -128 72 -72 ) ( -128 8 -72 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -128 120 -64 ) ( -128 184 -64 ) ( 128 184 -64 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( -128 -128 -64 ) ( 128 -128 -64 ) ( 128 -128 -72 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
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{
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( 192 192 256 ) ( 192 -128 256 ) ( 192 -128 -64 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
}
{
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( -192 -128 256 ) ( -192 192 256 ) ( -192 192 -64 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( -192 192 256 ) ( -280 192 256 ) ( -280 192 -64 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -200 192 256 ) ( -200 -128 256 ) ( -200 -128 -64 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
}
{
( 192 192 256 ) ( -192 192 256 ) ( -192 -128 256 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
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}
{
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( -192 192 256 ) ( 192 192 256 ) ( 192 192 -64 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( 192 192 256 ) ( 192 272 256 ) ( 192 272 -64 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
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( -192 272 256 ) ( -192 192 256 ) ( -192 192 -64 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
}
{
( 192 -128 -64 ) ( -192 -128 -64 ) ( -192 -192 -64 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
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( -192 -136 280 ) ( 192 -136 280 ) ( 192 -136 -40 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
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( 192 -128 256 ) ( -192 -128 256 ) ( -192 -128 -64 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( -192 -128 256 ) ( -192 -192 256 ) ( -192 -192 -64 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
}
}
{
"light" "1000"
"origin" "-8 40 128"
"classname" "light"
}
{
"origin" "-112 -40 40"
"classname" "info_player_deathmatch"
}

18
regression_tests/q3map2/degenerate_winding3/README.txt Normal file
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DESCRIPTION OF PROBLEM:
=======================
The sample map contains a wedge brush. The tip (the sharp edge) of the wedge
is chopped off by the YZ plane (side 5, or the last side, of the brush).
The height of the wedge where it is chopped is about 0.9. This makes it
barely smaller than DEGENERATE_EPSILON. So the face resulting from the chop
is probably degenerate, and that winding will be removed. I'm now wondering
what happens to the rest of the brush. 0.9 rounded to the nearest 1/8 unit
is 1/8, so the top face of the brush should get a slight raise, making the
"hole" even bigger. The sides will have degenerate edges near the chop, so
they will become triangles, creating open slivers in the sides.
Although this behavior is a tad nasty, it is expected based on the way the
code is written. I want to make sure nothing really nasty happens.
I consider this regression test to be broken if there is a "hole" in the brush,
and I consider this test to be very broken if something more drastic happens.

68
regression_tests/q3map2/degenerate_winding3/maps/degenerate_winding3.map Normal file
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{
"classname" "worldspawn"
{
( 10 0 0 ) ( 10 0 1 ) ( 10 64 1 ) radiant_regression_tests/green 0 0 0 0.500000 0.500000 0 0 0
( 10 0 0 ) ( 10 64 0 ) ( -1 64 0 ) radiant_regression_tests/blue 0 0 0 0.500000 0.500000 0 0 0
( 10 0 1 ) ( 10 0 0 ) ( -1 0 0 ) radiant_regression_tests/green 0 0 0 0.500000 0.500000 0 0 0
( -1 64 0 ) ( 10 64 0 ) ( 10 64 1 ) radiant_regression_tests/green 0 0 0 0.500000 0.500000 0 0 0
( 10 0 1 ) ( -1 0 0 ) ( -1 64 0 ) radiant_regression_tests/blue 0 0 0 0.500000 0.500000 0 0 0
( 0 0 1 ) ( 0 0 0 ) ( 0 64 0 ) radiant_regression_tests/red 0 0 0 0.500000 0.500000 0 0 0
}
{
( 128 72 -72 ) ( -128 72 -72 ) ( -128 8 -72 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -128 120 -64 ) ( -128 184 -64 ) ( 128 184 -64 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( -128 -128 -64 ) ( 128 -128 -64 ) ( 128 -128 -72 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 192 0 -64 ) ( 192 64 -64 ) ( 192 64 -72 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 128 192 -64 ) ( -128 192 -64 ) ( -128 192 -72 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -192 64 -64 ) ( -192 0 -64 ) ( -192 0 -72 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
}
{
( 256 192 -64 ) ( 192 192 -64 ) ( 192 -128 -64 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 192 -128 256 ) ( 192 192 256 ) ( 256 192 256 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 192 -128 256 ) ( 256 -128 256 ) ( 256 -128 -64 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
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( 256 192 256 ) ( 192 192 256 ) ( 192 192 -64 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 192 192 256 ) ( 192 -128 256 ) ( 192 -128 -64 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
}
{
( -192 192 -64 ) ( -280 192 -64 ) ( -280 -128 -64 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -280 -128 256 ) ( -280 192 256 ) ( -192 192 256 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -280 -128 256 ) ( -192 -128 256 ) ( -192 -128 -64 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -192 -128 256 ) ( -192 192 256 ) ( -192 192 -64 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( -192 192 256 ) ( -280 192 256 ) ( -280 192 -64 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -200 192 256 ) ( -200 -128 256 ) ( -200 -128 -64 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
}
{
( 192 192 256 ) ( -192 192 256 ) ( -192 -128 256 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( -176 -128 264 ) ( -176 192 264 ) ( 208 192 264 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -192 -128 304 ) ( 192 -128 304 ) ( 192 -128 248 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 192 -128 304 ) ( 192 192 304 ) ( 192 192 248 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 192 192 304 ) ( -192 192 304 ) ( -192 192 248 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -192 192 304 ) ( -192 -128 304 ) ( -192 -128 248 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
}
{
( 192 272 -64 ) ( -192 272 -64 ) ( -192 192 -64 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -192 192 256 ) ( -192 272 256 ) ( 192 272 256 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -192 192 256 ) ( 192 192 256 ) ( 192 192 -64 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( 192 192 256 ) ( 192 272 256 ) ( 192 272 -64 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 192 200 256 ) ( -192 200 256 ) ( -192 200 -64 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -192 272 256 ) ( -192 192 256 ) ( -192 192 -64 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
}
{
( 192 -128 -64 ) ( -192 -128 -64 ) ( -192 -192 -64 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -192 -192 256 ) ( -192 -128 256 ) ( 192 -128 256 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -192 -136 280 ) ( 192 -136 280 ) ( 192 -136 -40 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 192 -192 256 ) ( 192 -128 256 ) ( 192 -128 -64 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 192 -128 256 ) ( -192 -128 256 ) ( -192 -128 -64 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( -192 -128 256 ) ( -192 -192 256 ) ( -192 -192 -64 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
}
}
{
"light" "1000"
"origin" "-8 40 128"
"classname" "light"
}
{
"origin" "-112 -40 40"
"classname" "info_player_deathmatch"
}

13
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DESCRIPTION OF PROBLEM:
=======================
The 4-sided brush in the middle of the room (brush 0) has a duplicate plane.
The last side (side 4) is a duplicate of the third side (side 2) with the
vertexes re-arranged.
I wanted to make sure that ChopWindingInPlaceAccu() is doing the right thing
by setting a winding to NULL when all its points lie on the plane that the
winding is being chopped with. This seems to be the case. My concern was
that both windings for that duplicate plane will be NULL'ed out.
Seems that some other code might be fixing duplicate planes. That's OK.

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regression_tests/q3map2/duplicate_plane/maps/duplicate_plane.map Normal file
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{
"classname" "worldspawn"
{
( 136 128 64 ) ( -128 128 64 ) ( -128 -192 64 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( 136 128 384 ) ( -128 128 384 ) ( -128 128 0 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( 128 -192 0 ) ( -128 128 0 ) ( 128 -192 384 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( -128 128 256 ) ( 128 128 64 ) ( -128 -192 256 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( 128 -192 384 ) ( 128 -192 0 ) ( -128 128 0 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
}
{
( 256 256 -8 ) ( -256 256 -8 ) ( -256 -256 -8 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -256 -256 0 ) ( -256 256 0 ) ( 256 256 0 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( -256 -256 8 ) ( 256 -256 8 ) ( 256 -256 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 256 -256 8 ) ( 256 256 8 ) ( 256 256 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 256 256 8 ) ( -256 256 8 ) ( -256 256 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -256 256 8 ) ( -256 -256 8 ) ( -256 -256 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
}
{
( -256 256 0 ) ( -280 256 0 ) ( -280 -256 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -280 -256 384 ) ( -280 256 384 ) ( -256 256 384 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -280 -256 384 ) ( -256 -256 384 ) ( -256 -256 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -256 -256 384 ) ( -256 256 384 ) ( -256 256 0 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( -256 256 384 ) ( -280 256 384 ) ( -280 256 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -264 256 392 ) ( -264 -256 392 ) ( -264 -256 8 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
}
{
( 280 256 0 ) ( 256 256 0 ) ( 256 -256 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 256 -256 384 ) ( 256 256 384 ) ( 280 256 384 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 256 -256 384 ) ( 280 -256 384 ) ( 280 -256 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 264 -256 384 ) ( 264 256 384 ) ( 264 256 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 280 256 384 ) ( 256 256 384 ) ( 256 256 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 256 256 384 ) ( 256 -256 384 ) ( 256 -256 0 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
}
{
( 256 256 384 ) ( -256 256 384 ) ( -256 -256 384 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( -248 -256 392 ) ( -248 256 392 ) ( 264 256 392 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -256 -256 424 ) ( 256 -256 424 ) ( 256 -256 384 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 256 -256 424 ) ( 256 256 424 ) ( 256 256 384 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 256 256 424 ) ( -256 256 424 ) ( -256 256 384 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -256 256 424 ) ( -256 -256 424 ) ( -256 -256 384 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
}
{
( 256 296 0 ) ( -256 296 0 ) ( -256 256 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -256 256 384 ) ( -256 296 384 ) ( 256 296 384 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -256 256 384 ) ( 256 256 384 ) ( 256 256 0 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( 256 256 384 ) ( 256 296 384 ) ( 256 296 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 256 264 392 ) ( -256 264 392 ) ( -256 264 8 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -256 296 384 ) ( -256 256 384 ) ( -256 256 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
}
{
( 256 -256 0 ) ( -256 -256 0 ) ( -256 -296 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -256 -296 384 ) ( -256 -256 384 ) ( 256 -256 384 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -256 -264 392 ) ( 256 -264 392 ) ( 256 -264 8 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 256 -296 384 ) ( 256 -256 384 ) ( 256 -256 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 256 -256 384 ) ( -256 -256 384 ) ( -256 -256 0 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( -256 -256 384 ) ( -256 -296 384 ) ( -256 -296 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
}
}
{
"origin" "-8 16 256"
"classname" "info_player_deathmatch"
}
{
"light" "1000"
"origin" "-32 -40 256"
"classname" "light"
}

129
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DESCRIPTION OF PROBLEM:
=======================
This example map demonstrates what a relatively large value for plane distance
epsilon can do as far as destroying draw surfaces. The plane distance
epsilon was 0.01 at the time of this writing. This means that two planes
with the same normal and a distance 0.00999 apart are considered to be the
same plane.
The recommended value of plane distance epsilon is more along the lines of
0.001; however, we can't currently change this epsilon to that value due to
lack of resolution in 32 bit floating point integers in the 2^16 number range.
The smallest epsilon in 32 bit float land that can be added to 2^16 that
results in a value greater than 2^16 is approximately 0.007, which is already
practically the current default plane distance epsilon (0.01).
Brush 0 in the example map is a 6-sided brush with red top face. The red top
face is defined such in the .map file:
( -127 256 513 ) ( -127 384 513 ) ( 1 384 512 )
During the -bsp stage,
In ParseRawBrush() for brush 0
Side 4:
(-127.000000 256.000000 513.000000)
(-127.000000 384.000000 513.000000)
(1.000000 384.000000 512.000000)
normal: (0.0078122616 0.0000000000 0.9999694824)
dist: 511.9921875000
Now brush 1, the 4-sided brush with the red top face, has the following
defined as the red top face:
( -128 0 513 ) ( -128 128 513 ) ( 0 128 512 )
It's almost the same plane, only off by a distance of about 0.01.
During compiling:
In ParseRawBrush() for brush 1
Side 1:
(-128.000000 0.000000 513.000000)
(-128.000000 128.000000 513.000000)
(0.000000 128.000000 512.000000)
normal: (0.0078122616 0.0000000000 0.9999694824)
dist: 511.9921875000
Note that the normal and dist are identical to the plane above, even though
the two are different. This leads to multiplying errors later on, when this
side is intersected with the bottom green face. In particular, the blue face
disappears from the map. The blue face:
In CreateBrushWindings() for brush 1
Handling side 2 on the brush
Before clipping we have:
(-262144.00000000 0.00000000 262144.00000000)
(262144.00000000 0.00000000 262144.00000000)
(262144.00000000 -0.00000000 -262144.00000000)
(-262144.00000000 0.00000000 -262144.00000000)
After clipping w/ side 0 we have:
(-262144.00000000 0.00000000 262144.00000000)
(262144.00000000 0.00000000 262144.00000000)
(262144.00000000 0.00000000 -19977.00073172)
(-262144.00000000 0.00000000 20983.00073758)
After clipping w/ side 1 we have:
(262144.00000000 0.00000000 -1535.99218726)
(262144.00000000 0.00000000 -19977.00073172)
(-128.11106773 0.00000000 513.00868046)
After clipping w/ side 3 we have:
(0.00000000 0.00000000 503.00000293)
(-128.11106773 0.00000000 513.00868046)
(-0.00000000 0.00000000 512.00781274)
We see the error is greater than 0.1 in the X value -128.11106773. This
causes the draw surface to be discarded in processing later on. We must
not allow such a great error. An error greater than or equal to 0.1 is
considered to be very bad.
This disappearing blue triangle can be fixed simply by deleting brush 0,
the 6-sided brush that causes the bad plane alias. I would suggest deleting
this brush by editing the .map file manually (and then renumbering the brushes
manually).
After deleting this brush:
In ParseRawBrush() for brush 0
Side 1:
(-128.000000 0.000000 513.000000)
(-128.000000 128.000000 513.000000)
(0.000000 128.000000 512.000000)
normal: (0.0078122616 0.0000000000 0.9999694824)
dist: 511.9843750000
In CreateBrushWindings() for brush 0
Handling side 1 on the brush
Before clipping we have:
(262132.00000000 262136.00000000 -1535.90625143)
(262132.00000000 -262136.00000000 -1535.90625143)
(-262124.00048828 -262136.00000000 2559.84375238)
(-262124.00048828 262136.00000000 2559.84375238)
After clipping w/ side 0 we have:
(262132.00000000 262136.00000000 -1535.90625143)
(262132.00000000 -262136.00000000 -1535.90625143)
(-127.99993289 -262136.00000000 512.99999805)
(-127.99993289 262136.00000000 512.99999805)
After clipping w/ side 2 we have:
(262132.00000000 262136.00000000 -1535.90625143)
(262132.00000000 -0.00000000 -1535.90625143)
(-127.99993289 -0.00000000 512.99999805)
(-127.99993289 262136.00000000 512.99999805)
After clipping w/ side 3 we have:
(0.00000000 0.00000000 511.99999857)
(-127.99993289 -0.00000000 512.99999805)
(-127.99993289 127.99993289 512.99999805)
Note that we're way more accurate now, and we're nowhere near to approaching
the 0.1 error. All it took was the deletion of a seemintly unrelated brush.
SOLUTION TO PROBLEM:
====================
The suggested fix is to increase the resolution of plane distance from 32 bit
float to 64 bit float for the relevant brush processing operations. After that
is done, decrease the default plane distance epsilon from 0.01 to 0.001. Note
that even though plane distance epsilon can be specified on the command-line,
it will do no good (even if set to 0) if the plane distance is close to
2^16.

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{
"classname" "worldspawn"
{
( -127 384 513 ) ( -127 256 513 ) ( -127 256 384 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( 1 384 512 ) ( -127 384 512 ) ( -127 384 384 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( 1 256 512 ) ( 1 384 512 ) ( 1 384 384 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( -127 256 512 ) ( 1 256 512 ) ( 1 256 384 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( -127 256 513 ) ( -127 384 513 ) ( 1 384 512 ) radiant_regression_tests/red 0 0 0 0.500000 0.500000 0 0 0
( 1 384 384 ) ( -127 384 384 ) ( -127 256 384 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
}
{
( 0 128 503 ) ( -128 128 513 ) ( 0 0 503 ) radiant_regression_tests/green 0 0 0 0.500000 0.500000 0 0 0
( -128 0 513 ) ( -128 128 513 ) ( 0 128 512 ) radiant_regression_tests/red 0 0 0 0.500000 0.500000 0 0 0
( -128 0 512 ) ( 0 0 512 ) ( 0 0 384 ) radiant_regression_tests/blue 0 0 0 0.500000 0.500000 0 0 0
( -128 128 503 ) ( 0 0 503 ) ( -128 128 513 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
}
{
( -128 472 8 ) ( -128 320 8 ) ( -128 320 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -232 512 8 ) ( -416 512 8 ) ( -416 512 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 512 -304 8 ) ( 512 -152 8 ) ( 512 -152 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 48 -512 8 ) ( 232 -512 8 ) ( 232 -512 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -432 232 0 ) ( -432 384 0 ) ( -248 384 0 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( -256 384 -8 ) ( -440 384 -8 ) ( -440 232 -8 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
}
{
( -136 512 1040 ) ( -136 -512 1040 ) ( -136 -512 8 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -512 512 1032 ) ( -520 512 1032 ) ( -520 512 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -128 -512 1032 ) ( -128 512 1032 ) ( -128 512 0 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( -520 -512 1032 ) ( -512 -512 1032 ) ( -512 -512 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -520 -512 1024 ) ( -520 512 1024 ) ( -512 512 1024 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -512 512 0 ) ( -520 512 0 ) ( -520 -512 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
}
{
( 512 512 1024 ) ( 512 -512 1024 ) ( 512 -512 0 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( 592 512 1024 ) ( 512 512 1024 ) ( 512 512 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 520 -512 1000 ) ( 520 512 1000 ) ( 520 512 -24 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 512 -512 1024 ) ( 592 -512 1024 ) ( 592 -512 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 512 -512 1024 ) ( 512 512 1024 ) ( 592 512 1024 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 592 512 0 ) ( 512 512 0 ) ( 512 -512 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
}
{
( -128 512 1200 ) ( -128 -512 1200 ) ( -128 -512 1024 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 512 512 1200 ) ( -512 512 1200 ) ( -512 512 1024 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 512 -512 1200 ) ( 512 512 1200 ) ( 512 512 1024 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -512 -512 1200 ) ( 512 -512 1200 ) ( 512 -512 1024 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -456 -512 1032 ) ( -456 512 1032 ) ( 568 512 1032 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 512 512 1024 ) ( -512 512 1024 ) ( -512 -512 1024 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
}
{
( -128 712 1024 ) ( -128 512 1024 ) ( -128 512 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 512 520 1040 ) ( -512 520 1040 ) ( -512 520 16 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 512 512 1024 ) ( 512 712 1024 ) ( 512 712 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -512 512 1024 ) ( 512 512 1024 ) ( 512 512 0 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( -512 512 1024 ) ( -512 712 1024 ) ( 512 712 1024 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 512 712 0 ) ( -512 712 0 ) ( -512 512 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
}
{
( -128 -512 1024 ) ( -128 -624 1024 ) ( -128 -624 56 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 512 -512 1024 ) ( -512 -512 1024 ) ( -512 -512 56 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( 512 -624 1024 ) ( 512 -512 1024 ) ( 512 -512 56 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -512 -520 1048 ) ( 512 -520 1048 ) ( 512 -520 80 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( -512 -624 1024 ) ( -512 -512 1024 ) ( 512 -512 1024 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 512 -504 0 ) ( -512 -504 0 ) ( -512 -616 0 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
}
}
{
"classname" "light"
"origin" "192 64 640"
"light" "3000"
}
{
"classname" "info_player_deathmatch"
"origin" "-64 64 640"
}

27
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DESCRIPTION OF PROBLEM:
=======================
The example map, maps/segmentation_fault.map, contains an example of this
bug. q3map2 might segfault while compiling this map. This sort of thing
might happen in certain intermediate versions of q3map2 while work is being
done on fixing the math accuracy. The bug may not have happened in older
version of q3map2, before the math accuracy issues were addressed.
To trigger the bug, compile the map; you don't need -vis or -light. Only
-bsp (the first q3map2 stage) is necessary to trigger the bug. The only
entities in the map are a light and a info_player_deathmatch, so the map will
compile for any Q3 mod.
Here is a description of the problem brush (brush #0):
side 0: -z face
side 1: +z face
side 2: -y face
side 3: +x face
side 4: +y face
side 5: -x face
side 6: problem side "accidentally showed up" :-)
Side 6 is actually a superfluous plane and will be NULL'ed out in the code.
If the code does not handle a NULL'ed out winding correctly, it will
segfault.

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{
"classname" "worldspawn"
{
( 10296 17600 -592 ) ( 10240 17600 -592 ) ( 10240 17472 -592 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 134217728 257 0
( 10280 17472 -576 ) ( 10280 17600 -576 ) ( 10336 17600 -576 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 134217728 257 0
( 10280 17472 -576 ) ( 10336 17472 -576 ) ( 10336 17472 -1600 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 134217728 257 0
( 10367 17472 -576 ) ( 10367 17600 -576 ) ( 10367 17600 -1600 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 134217728 257 0
( 10328 17727 -576 ) ( 10272 17727 -576 ) ( 10272 17727 -1600 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 134217728 257 0
( 10240 17608 -576 ) ( 10240 17480 -576 ) ( 10240 17480 -1600 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 134217728 257 0
( 10240 17727 -576 ) ( 10240 17726 -621 ) ( 10335 17727 -576 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 134217728 257 0
}
{
( 10504 17800 -768 ) ( 10112 17800 -768 ) ( 10112 17792 -768 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 10112 17792 -320 ) ( 10112 17800 -320 ) ( 10504 17800 -320 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 10112 17792 -576 ) ( 10504 17792 -576 ) ( 10504 17792 -592 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( 10496 17792 -576 ) ( 10496 17800 -576 ) ( 10496 17800 -592 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 10504 17800 -576 ) ( 10112 17800 -576 ) ( 10112 17800 -592 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 10112 17800 -576 ) ( 10112 17792 -576 ) ( 10112 17792 -592 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
}
{
( 10496 17408 -768 ) ( 10112 17408 -768 ) ( 10112 17392 -768 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 10112 17384 -320 ) ( 10112 17400 -320 ) ( 10496 17400 -320 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 10112 17400 -544 ) ( 10496 17400 -544 ) ( 10496 17400 -768 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 10496 17392 -544 ) ( 10496 17408 -544 ) ( 10496 17408 -768 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 10496 17408 -544 ) ( 10112 17408 -544 ) ( 10112 17408 -768 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
( 10112 17408 -544 ) ( 10112 17392 -544 ) ( 10112 17392 -768 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
}
{
( 10568 17784 -768 ) ( 10496 17784 -768 ) ( 10496 17408 -768 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 10496 17408 -320 ) ( 10496 17784 -320 ) ( 10568 17784 -320 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 10496 17408 -320 ) ( 10568 17408 -320 ) ( 10568 17408 -768 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 10504 17400 -320 ) ( 10504 17776 -320 ) ( 10504 17776 -768 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 10568 17792 -320 ) ( 10496 17792 -320 ) ( 10496 17792 -768 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 10496 17784 -320 ) ( 10496 17408 -320 ) ( 10496 17408 -768 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
}
{
( 10112 17792 -768 ) ( 10072 17792 -768 ) ( 10072 17408 -768 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 10072 17408 -320 ) ( 10072 17792 -320 ) ( 10112 17792 -320 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 10072 17408 -320 ) ( 10112 17408 -320 ) ( 10112 17408 -768 ) common/caulk 0 0 0 0.500000 0.500000 0 4 0
( 10112 17408 -320 ) ( 10112 17792 -320 ) ( 10112 17792 -768 ) radiant_regression_tests/tile 0 0 0 0.500000 0.500000 0 0 0
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{
"origin" "10312 17600 -480"
"classname" "info_player_deathmatch"
}
{
"light" "1000"
"origin" "10240 17608 -464"
"classname" "light"
}

45
regression_tests/q3map2/snap_plane/README.txt Normal file
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DESCRIPTION OF PROBLEM:
=======================
The example map, maps/snap_plane.map, contains an example of some bugs.
The green brush with the red face is transformed into something totally
unexpected.
To trigger the bug, compile the map; you don't need -vis or -light. Only
-bsp (the first q3map2 stage) is necessary to trigger the bug. The only
entities in the map are a light and a info_player_deathmatch, so the map will
compile for any Q3 mod.
SOLUTION TO PROBLEM:
====================
I actually came up with this regression test after reading the code to
SnapPlane() and SnapNormal(). I decided to make this map as a test of
whether or not I understand how the code is broken. Sure enough, the map
is broken in the same way that I would expect it to be broken.
The problem is that the red face of the green brush in the center of the room
is very close to being axially aligned, but not quite. This plane will
therefore be "snapped" to become axial. This is not the problem. The
problem is that after the snap, the plane will be shifted a great deal,
and the corner of the green brush will no longer come even close to meeting
the corner of the other cube brush next to it (the two corners of the two
brushes will drift apart a great deal).
If you study the legacy SnapPlane() code, you will see that planes are
defined as a unit normal and distance from origin. Well, because
of the position of this brush on the side of the world extents (far from
the original), the snap will cause drastic effects on the points that the
plane was supposed to approximate.
Another problem with SnapPlane() is that SnapNormal() snaps too liberally.
Once SnapNormal() is changed to only snap normals that are REALLY close
to axial (and not anything within 0.25 degrees), this bug will no longer
appear, but the SnapPlane() problem will still be present. So, this
regression test should be fixed BEFORE SnapNormal() is fixed, otherwise
create another regression test with a red face that is much much closer to
being axially aligned. We want to make sure that SnapPlane() is fixed when
things actually do get snapped.
The code to address these issues is currently being worked on.

78
regression_tests/q3map2/snap_plane/maps/snap_plane.map Normal file
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{
"classname" "worldspawn"
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{
"light" "1000"
"origin" "-54664 5696 40"
"classname" "light"
}
{
"angle" "360"
"origin" "-54840 5696 88"
"classname" "info_player_deathmatch"
}