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Fix artifacts in bump map render with Object coordinates. Float precision

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is problematic here with coordinates being transform by matrix and back by
inverse, so tweaked the epsilons to avoid the problem.
This commit is contained in:
Brecht Van Lommel
2010-02-15 16:45:45 +00:00
parent b3d41ac144
commit 9bd50214d3
1 changed files with 3 additions and 3 deletions
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6
source/blender/render/intern/source/texture.c
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@@ -1881,7 +1881,7 @@ void do_material_tex(ShadeInput *shi)
// for the uv case, use the same value for both du/dv,
// since individually scaling the normal derivatives makes them useless...
du = MIN2(du, dv);
idu = (du < 1e-6f) ? bf : (bf/du);
idu = (du < 1e-5f) ? bf : (bf/du);
// +u val
tco[0] = co[0] + dudnu*du;
@@ -1902,8 +1902,8 @@ void do_material_tex(ShadeInput *shi)
else {
float tu[3] = {nu[0], nu[1], nu[2]}, tv[3] = {nv[0], nv[1], nv[2]};
idu = (du < 1e-6f) ? bf : (bf/du);
idv = (dv < 1e-6f) ? bf : (bf/dv);
idu = (du < 1e-5f) ? bf : (bf/du);
idv = (dv < 1e-5f) ? bf : (bf/dv);
if ((mtex->texco == TEXCO_ORCO) && shi->obr && shi->obr->ob) {
mul_mat3_m4_v3(shi->obr->ob->imat, tu);