MultiMesh

Inherits: Resource < Reference < Object

Proporciona un instanciamiento de malla de alto rendimiento.

Descripción

MultiMesh provides low-level mesh instancing. Drawing thousands of MeshInstance nodes can be slow, since each object is submitted to the GPU then drawn individually.

MultiMesh is much faster as it can draw thousands of instances with a single draw call, resulting in less API overhead.

As a drawback, if the instances are too far away from each other, performance may be reduced as every single instance will always render (they are spatially indexed as one, for the whole object).

Since instances may have any behavior, the AABB used for visibility must be provided by the user.

Tutoriales

• Animación de miles de objetos con MultiMeshInstance

• Optimización usando MultiMeshes

Propiedades

ColorFormat	color_format	0
CustomDataFormat	custom_data_format	0
int	instance_count	0
Mesh	mesh
TransformFormat	transform_format	0
int	visible_instance_count	-1

Métodos

AABB	get_aabb ( ) const
Color	get_instance_color ( int instance ) const
Color	get_instance_custom_data ( int instance ) const
Transform	get_instance_transform ( int instance ) const
Transform2D	get_instance_transform_2d ( int instance ) const
void	set_as_bulk_array ( PoolRealArray array )
void	set_instance_color ( int instance, Color color )
void	set_instance_custom_data ( int instance, Color custom_data )
void	set_instance_transform ( int instance, Transform transform )
void	set_instance_transform_2d ( int instance, Transform2D transform )

Enumeraciones

enum TransformFormat:

• TRANSFORM_2D = 0 --- Utiliza esto cuando uses las transformadas 2D.

• TRANSFORM_3D = 1 --- Utiliza esto cuando uses las transformadas 3D.

---

enum ColorFormat:

• COLOR_NONE = 0 --- Use when you are not using per-instance Colors.

• COLOR_8BIT = 1 --- Compress Color data into 8 bits when passing to shader. This uses less memory and can be faster, but the Color loses precision.

• COLOR_FLOAT = 2 --- The Color passed into set_instance_color will use 4 floats. Use this for highest precision Color.

---

enum CustomDataFormat:

• CUSTOM_DATA_NONE = 0 --- Use when you are not using per-instance custom data.

• CUSTOM_DATA_8BIT = 1 --- Compress custom_data into 8 bits when passing to shader. This uses less memory and can be faster, but loses precision and range. Floats packed into 8 bits can only represent values between 0 and 1, numbers outside that range will be clamped.

• CUSTOM_DATA_FLOAT = 2 --- The Color passed into set_instance_custom_data will use 4 floats. Use this for highest precision.

Descripciones de Propiedades

• ColorFormat color_format

Default	0
Setter	set_color_format(value)
Getter	get_color_format()

Format of colors in color array that gets passed to shader.

---

• CustomDataFormat custom_data_format

Default	0
Setter	set_custom_data_format(value)
Getter	get_custom_data_format()

Format of custom data in custom data array that gets passed to shader.

---

• int instance_count

Default	0
Setter	set_instance_count(value)
Getter	get_instance_count()

Número de instancias que se dibujarán. Esto limpia y (re)dimensiona los buffers. Por defecto, todas las instancias se dibujan pero puedes limitar esto con visible_instance_count.

---

• Mesh mesh

Setter	set_mesh(value)
Getter	get_mesh()

Malla para ser dibujada.

---

• TransformFormat transform_format

Default	0
Setter	set_transform_format(value)
Getter	get_transform_format()

Formato de transformación usado para transformar la malla, ya sea 2D o 3D.

---

• int visible_instance_count

Default	-1
Setter	set_visible_instance_count(value)
Getter	get_visible_instance_count()

Limita el número de instancias dibujadas, -1 dibuja todas las instancias. Cambiar esto no cambia el tamaño de los buffers.

Descripciones de Métodos

• AABB get_aabb ( ) const

Returns the visibility axis-aligned bounding box in local space. See also VisualInstance.get_transformed_aabb.

---

• Color get_instance_color ( int instance ) const

Obtiene el color de una instancia específica.

---

• Color get_instance_custom_data ( int instance ) const

Devuelve los datos personalizados que se han establecido para una instancia específica.

---

• Transform get_instance_transform ( int instance ) const

Devuelve la Transform de una instancia específica.

---

• Transform2D get_instance_transform_2d ( int instance ) const

Devuelve la Transform2D de una instancia específica.

---

• void set_as_bulk_array ( PoolRealArray array )

Sets all data related to the instances in one go. This is especially useful when loading the data from disk or preparing the data from GDNative.

All data is packed in one large float array. An array may look like this: Transform for instance 1, color data for instance 1, custom data for instance 1, transform for instance 2, color data for instance 2, etc...

Transform is stored as 12 floats, Transform2D is stored as 8 floats, COLOR_8BIT / CUSTOM_DATA_8BIT is stored as 1 float (4 bytes as is) and COLOR_FLOAT / CUSTOM_DATA_FLOAT is stored as 4 floats.

---

• void set_instance_color ( int instance, Color color )

Sets the color of a specific instance by multiplying the mesh's existing vertex colors.

For the color to take effect, ensure that color_format is non-null on the MultiMesh and SpatialMaterial.vertex_color_use_as_albedo is true on the material.

---

• void set_instance_custom_data ( int instance, Color custom_data )

Sets custom data for a specific instance. Although Color is used, it is just a container for 4 floating point numbers. The format of the number can change depending on the CustomDataFormat used.

---

• void set_instance_transform ( int instance, Transform transform )

Establece la Transform para una instancia específica.

---

• void set_instance_transform_2d ( int instance, Transform2D transform )

Establece el Transform2D para una instancia específica.