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Add default specular when there is not specular map. Add example for adjusting specular coefficient.

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yunfeibai
2017-05-07 21:09:08 -07:00
parent 67392b85d5
commit e363e12ea4
5 changed files with 47 additions and 4 deletions
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8
examples/TinyRenderer/model.cpp
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@@ -167,8 +167,12 @@ Vec2f Model::uv(int iface, int nthvert) {
}
float Model::specular(Vec2f uvf) {
Vec2i uv(uvf[0]*specularmap_.get_width(), uvf[1]*specularmap_.get_height());
return specularmap_.get(uv[0], uv[1])[0]/1.f;
if (specularmap_.get_width() && specularmap_.get_height())
{
Vec2i uv(uvf[0]*specularmap_.get_width(), uvf[1]*specularmap_.get_height());
return specularmap_.get(uv[0], uv[1])[0]/1.f;
}
return 2.0;
}
Vec3f Model::normal(int iface, int nthvert) {