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Added material_overlay property to MeshInstance

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Applying overlay materials into multi-surface meshes currently
requires adding a next pass material to all the surfaces, which
might be cumbersome when the material is to be applied to a range
of different geometries. This also makes it not trivial to use
AnimationPlayer to control the material in case of visual effects.
The material_override property is not an option as it works
replacing the active material for the surfaces, not adding a new pass.

This commit adds the material_overlay property to GeometryInstance
(and therefore MeshInstance), having the same reach as
material_override (that is, all surfaces) but adding a new material
pass on top of the active materials, instead of replacing them.

Implemented in rasterizer of both GLES2 and GLES3.
This commit is contained in:
Fernando Cosentino 2021-07-24 21:45:51 +01:00
parent 3ac698750b
commit cc8846bef6
17 changed files with 124 additions and 0 deletions
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1
servers/visual/visual_server_wrap_mt.h
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@ -541,6 +541,7 @@ public:
FUNC3(instance_geometry_set_flag, RID, InstanceFlags, bool)
FUNC2(instance_geometry_set_cast_shadows_setting, RID, ShadowCastingSetting)
FUNC2(instance_geometry_set_material_override, RID, RID)
FUNC2(instance_geometry_set_material_overlay, RID, RID)
FUNC5(instance_geometry_set_draw_range, RID, float, float, float, float)
FUNC2(instance_geometry_set_as_instance_lod, RID, RID)