Add Skeletons and Blend Shapes to the OpenGL renderer

This uses a similar multipass approach to blend shapes
as Godot 3.x, the major difference here is that we
need to convert the normals and tangents to octahedral
for rendering.

Skeletons work the same as the Vulkan renderer except the bones
are stored in a texture as they were in 3.x.

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/gles3/rasterizer_scene_gles3.cpp b/drivers/gles3/rasterizer_scene_gles3.cpp
index 026ec85e6b..8250140c3f 100644
--- a/drivers/gles3/rasterizer_scene_gles3.cpp
+++ b/drivers/gles3/rasterizer_scene_gles3.cpp
@@ -420,6 +420,11 @@ void RasterizerSceneGLES3::_geometry_instance_update(RenderGeometryInstance *p_g
 		}
 
 	} else if (ginstance->data->base_type == RS::INSTANCE_MESH) {
+		if (mesh_storage->skeleton_is_valid(ginstance->data->skeleton)) {
+			if (ginstance->data->dirty_dependencies) {
+				mesh_storage->skeleton_update_dependency(ginstance->data->skeleton, &ginstance->data->dependency_tracker);
+			}
+		}
 	}
 
 	ginstance->store_transform_cache = store_transform;