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display: ignore material if no lights are applied

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This fixes materials suddenly showing up when a color scale is applied and color-scale-via-lighting is set.

Fixes #404
This commit is contained in:
rdb 2018-10-07 22:52:49 +02:00
parent e1af4abf11
commit 51414466da
2 changed files with 23 additions and 1 deletions
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23
panda/src/display/standardMunger.cxx
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@ -36,7 +36,8 @@ StandardMunger(GraphicsStateGuardianBase *gsg, const RenderState *state,
_munge_color(false),
_munge_color_scale(false),
_auto_shader(false),
_shader_skinning(false)
_shader_skinning(false),
_remove_material(false)
{
const ShaderAttrib *shader_attrib;
state->get_attrib_def(shader_attrib);
@ -94,6 +95,19 @@ StandardMunger(GraphicsStateGuardianBase *gsg, const RenderState *state,
// effort to detect this contrived situation and handle it correctly.
}
}
// If we have no lights but do have a material, we will need to remove it so
// that it won't appear when we enable color scale via lighting.
const LightAttrib *light_attrib;
const MaterialAttrib *material_attrib;
if (get_gsg()->get_color_scale_via_lighting() &&
(!state->get_attrib(light_attrib) || !light_attrib->has_any_on_light()) &&
state->get_attrib(material_attrib) &&
material_attrib->get_material() != nullptr &&
shader_attrib->get_shader() == nullptr) {
_remove_material = true;
_should_munge_state = true;
}
}
/**
@ -291,6 +305,9 @@ compare_to_impl(const GeomMunger *other) const {
if (_auto_shader != om->_auto_shader) {
return (int)_auto_shader - (int)om->_auto_shader;
}
if (_remove_material != om->_remove_material) {
return (int)_remove_material - (int)om->_remove_material;
}
return StateMunger::compare_to_impl(other);
}
@ -344,5 +361,9 @@ munge_state_impl(const RenderState *state) {
munged_state = munged_state->remove_attrib(ColorScaleAttrib::get_class_slot());
}
if (_remove_material) {
munged_state = munged_state->remove_attrib(MaterialAttrib::get_class_slot());
}
return munged_state;
}

1
panda/src/display/standardMunger.h
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@ -55,6 +55,7 @@ private:
bool _munge_color_scale;
bool _auto_shader;
bool _shader_skinning;
bool _remove_material;
LColor _color;
LVecBase4 _color_scale;