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Fix T46085: UV project modifier artifacts with vertices behind the camera.

This commit is contained in:
Brecht Van Lommel 2015-10-11 20:25:33 +02:00
parent bd6febc4c4
commit d7ceca8c93
Notes: blender-bot 2023-02-14 11:28:39 +01:00 
Referenced by issue #46085, baking diffuse color doesn't work properly with uv project
1 changed files with 4 additions and 3 deletions
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7
source/blender/blenlib/intern/math_matrix.c
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@ -516,7 +516,8 @@ void mul_v3_mat3_m4v3(float r[3], float mat[4][4], const float vec[3])
void mul_project_m4_v3(float mat[4][4], float vec[3])
{
const float w = mul_project_m4_v3_zfac(mat, vec);
/* absolute value to not flip the frustum upside down behind the camera */
const float w = fabsf(mul_project_m4_v3_zfac(mat, vec));
mul_m4_v3(mat, vec);
vec[0] /= w;
@ -526,7 +527,7 @@ void mul_project_m4_v3(float mat[4][4], float vec[3])
void mul_v3_project_m4_v3(float r[3], float mat[4][4], const float vec[3])
{
const float w = mul_project_m4_v3_zfac(mat, vec);
const float w = fabsf(mul_project_m4_v3_zfac(mat, vec));
mul_v3_m4v3(r, mat, vec);
r[0] /= w;
@ -536,7 +537,7 @@ void mul_v3_project_m4_v3(float r[3], float mat[4][4], const float vec[3])
void mul_v2_project_m4_v3(float r[2], float mat[4][4], const float vec[3])
{
const float w = mul_project_m4_v3_zfac(mat, vec);
const float w = fabsf(mul_project_m4_v3_zfac(mat, vec));
mul_v2_m4v3(r, mat, vec);
r[0] /= w;