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Fix zero division

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This commit is contained in:
Miloslav Číž 2019-05-12 15:07:18 +02:00
parent f7a8cc8f63
commit 8aa3bbe29e
1 changed files with 4 additions and 2 deletions
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6
s3l.h
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@ -1355,8 +1355,10 @@ void S3L_makeCameraMatrix(S3L_Transform3D cameraTransform, S3L_Mat4 *m)
static inline void S3L_perspectiveDivide(S3L_Vec4 *vector, static inline void S3L_perspectiveDivide(S3L_Vec4 *vector,
S3L_Unit focalLength) S3L_Unit focalLength)
{ {
vector->x = (vector->x * focalLength) / vector->z; S3L_Unit divisor = S3L_nonZero(vector->z);
vector->y = (vector->y * focalLength) / vector->z;
vector->x = (vector->x * focalLength) / divisor;
vector->y = (vector->y * focalLength) / divisor;
} }
void S3L_drawModelIndexed( void S3L_drawModelIndexed(