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Cycles: Fix wrong projection coordinates for points behind the camera

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Points behind camera will be flipped on projection, but that did not
happen.

This solves second issue reported at T48848.
This commit is contained in:
Sergey Sharybin 2016-07-29 17:28:36 +02:00
parent 1d154fe271
commit ceb03a4d32
1 changed files with 5 additions and 2 deletions
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7
intern/cycles/blender/blender_object.cpp
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@ -259,11 +259,14 @@ static bool object_boundbox_clip(Scene *scene,
dot(worldtondc.y, b),
dot(worldtondc.z, b),
dot(worldtondc.w, b));
p = float4_to_float3(c / c.w);
if(c.z < 0.0f) {
p.x = 1.0f - p.x;
p.y = 1.0f - p.y;
}
if(c.z >= -margin) {
all_behind = false;
}
c /= c.w;
p = float4_to_float3(c);
bb_min = min(bb_min, p);
bb_max = max(bb_max, p);
}