Viewport¶
Creates a sub-view into the screen.
Description¶
A Viewport creates a different view into the screen, or a sub-view inside another viewport. Children 2D Nodes will display on it, and children Camera 3D nodes will render on it too.
Optionally, a viewport can have its own 2D or 3D world, so they don't share what they draw with other viewports.
If a viewport is a child of a ViewportContainer, it will automatically take up its size, otherwise it must be set manually.
Viewports can also choose to be audio listeners, so they generate positional audio depending on a 2D or 3D camera child of it.
Also, viewports can be assigned to different screens in case the devices have multiple screens.
Finally, viewports can also behave as render targets, in which case they will not be visible unless the associated texture is used to draw.
Tutorials¶
Properties¶
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Methods¶
find_world ( ) const |
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find_world_2d ( ) const |
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get_camera ( ) const |
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get_final_transform ( ) const |
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get_modal_stack_top ( ) const |
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get_mouse_position ( ) const |
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get_render_info ( RenderInfo info ) |
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get_shadow_atlas_quadrant_subdiv ( int quadrant ) const |
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get_size_override ( ) const |
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get_texture ( ) const |
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get_viewport_rid ( ) const |
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get_visible_rect ( ) const |
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gui_get_drag_data ( ) const |
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gui_has_modal_stack ( ) const |
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gui_is_dragging ( ) const |
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void |
input ( InputEvent local_event ) |
is_input_handled ( ) const |
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is_size_override_enabled ( ) const |
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void |
set_attach_to_screen_rect ( Rect2 rect ) |
void |
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void |
set_shadow_atlas_quadrant_subdiv ( int quadrant, ShadowAtlasQuadrantSubdiv subdiv ) |
void |
set_size_override ( bool enable, Vector2 size=Vector2( -1, -1 ), Vector2 margin=Vector2( 0, 0 ) ) |
void |
unhandled_input ( InputEvent local_event ) |
void |
update_worlds ( ) |
void |
warp_mouse ( Vector2 to_position ) |
Signals¶
gui_focus_changed ( Control node )
Emitted when a Control node grabs keyboard focus.
size_changed ( )
Emitted when the size of the viewport is changed, whether by set_size_override, resize of window, or some other means.
Enumerations¶
enum UpdateMode:
UPDATE_DISABLED = 0 --- Do not update the render target.
UPDATE_ONCE = 1 --- Update the render target once, then switch to UPDATE_DISABLED.
UPDATE_WHEN_VISIBLE = 2 --- Update the render target only when it is visible. This is the default value.
UPDATE_ALWAYS = 3 --- Always update the render target.
enum ShadowAtlasQuadrantSubdiv:
SHADOW_ATLAS_QUADRANT_SUBDIV_DISABLED = 0 --- This quadrant will not be used.
SHADOW_ATLAS_QUADRANT_SUBDIV_1 = 1 --- This quadrant will only be used by one shadow map.
SHADOW_ATLAS_QUADRANT_SUBDIV_4 = 2 --- This quadrant will be split in 4 and used by up to 4 shadow maps.
SHADOW_ATLAS_QUADRANT_SUBDIV_16 = 3 --- This quadrant will be split 16 ways and used by up to 16 shadow maps.
SHADOW_ATLAS_QUADRANT_SUBDIV_64 = 4 --- This quadrant will be split 64 ways and used by up to 64 shadow maps.
SHADOW_ATLAS_QUADRANT_SUBDIV_256 = 5 --- This quadrant will be split 256 ways and used by up to 256 shadow maps. Unless the shadow_atlas_size is very high, the shadows in this quadrant will be very low resolution.
SHADOW_ATLAS_QUADRANT_SUBDIV_1024 = 6 --- This quadrant will be split 1024 ways and used by up to 1024 shadow maps. Unless the shadow_atlas_size is very high, the shadows in this quadrant will be very low resolution.
SHADOW_ATLAS_QUADRANT_SUBDIV_MAX = 7 --- Represents the size of the ShadowAtlasQuadrantSubdiv enum.
enum RenderInfo:
RENDER_INFO_OBJECTS_IN_FRAME = 0 --- Amount of objects in frame.
RENDER_INFO_VERTICES_IN_FRAME = 1 --- Amount of vertices in frame.
RENDER_INFO_MATERIAL_CHANGES_IN_FRAME = 2 --- Amount of material changes in frame.
RENDER_INFO_SHADER_CHANGES_IN_FRAME = 3 --- Amount of shader changes in frame.
RENDER_INFO_SURFACE_CHANGES_IN_FRAME = 4 --- Amount of surface changes in frame.
RENDER_INFO_DRAW_CALLS_IN_FRAME = 5 --- Amount of draw calls in frame.
RENDER_INFO_2D_ITEMS_IN_FRAME = 6 --- Amount of items or joined items in frame.
RENDER_INFO_2D_DRAW_CALLS_IN_FRAME = 7 --- Amount of draw calls in frame.
RENDER_INFO_MAX = 8 --- Represents the size of the RenderInfo enum.
enum DebugDraw:
DEBUG_DRAW_DISABLED = 0 --- Objects are displayed normally.
DEBUG_DRAW_UNSHADED = 1 --- Objects are displayed without light information.
DEBUG_DRAW_OVERDRAW = 2 --- Objected are displayed semi-transparent with additive blending so you can see where they intersect.
DEBUG_DRAW_WIREFRAME = 3 --- Objects are displayed in wireframe style.
enum MSAA:
MSAA_DISABLED = 0 --- Multisample anti-aliasing mode disabled. This is the default value.
MSAA_2X = 1 --- Use 2x Multisample Antialiasing.
MSAA_4X = 2 --- Use 4x Multisample Antialiasing.
MSAA_8X = 3 --- Use 8x Multisample Antialiasing. Likely unsupported on low-end and older hardware.
MSAA_16X = 4 --- Use 16x Multisample Antialiasing. Likely unsupported on medium and low-end hardware.
enum Usage:
USAGE_2D = 0 --- Allocates all buffers needed for drawing 2D scenes. This takes less VRAM than the 3D usage modes. Note that 3D rendering effects such as glow and HDR are not available when using this mode.
USAGE_2D_NO_SAMPLING = 1 --- Allocates buffers needed for 2D scenes without allocating a buffer for screen copy. Accordingly, you cannot read from the screen. Of the Usage types, this requires the least VRAM. Note that 3D rendering effects such as glow and HDR are not available when using this mode.
USAGE_3D = 2 --- Allocates full buffers for drawing 3D scenes and all 3D effects including buffers needed for 2D scenes and effects.
USAGE_3D_NO_EFFECTS = 3 --- Allocates buffers needed for drawing 3D scenes. But does not allocate buffers needed for reading from the screen and post-processing effects. Saves some VRAM.
enum ClearMode:
CLEAR_MODE_ALWAYS = 0 --- Always clear the render target before drawing.
CLEAR_MODE_NEVER = 1 --- Never clear the render target.
CLEAR_MODE_ONLY_NEXT_FRAME = 2 --- Clear the render target next frame, then switch to CLEAR_MODE_NEVER.
Property Descriptions¶
bool arvr
Default |
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Setter |
set_use_arvr(value) |
Getter |
use_arvr() |
If true
, the viewport will be used in AR/VR process.
bool audio_listener_enable_2d
Default |
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Setter |
set_as_audio_listener_2d(value) |
Getter |
is_audio_listener_2d() |
If true
, the viewport will process 2D audio streams.
bool audio_listener_enable_3d
Default |
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Setter |
set_as_audio_listener(value) |
Getter |
is_audio_listener() |
If true
, the viewport will process 3D audio streams.
Transform2D canvas_transform
Setter |
set_canvas_transform(value) |
Getter |
get_canvas_transform() |
The canvas transform of the viewport, useful for changing the on-screen positions of all child CanvasItems. This is relative to the global canvas transform of the viewport.
DebugDraw debug_draw
Default |
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Setter |
set_debug_draw(value) |
Getter |
get_debug_draw() |
The overlay mode for test rendered geometry in debug purposes.
bool disable_3d
Default |
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Setter |
set_disable_3d(value) |
Getter |
is_3d_disabled() |
If true
, the viewport will disable 3D rendering. For actual disabling use usage
.
Transform2D global_canvas_transform
Setter |
set_global_canvas_transform(value) |
Getter |
get_global_canvas_transform() |
The global canvas transform of the viewport. The canvas transform is relative to this.
bool gui_disable_input
Default |
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Setter |
set_disable_input(value) |
Getter |
is_input_disabled() |
If true
, the viewport will not receive input event.
bool gui_snap_controls_to_pixels
Default |
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Setter |
set_snap_controls_to_pixels(value) |
Getter |
is_snap_controls_to_pixels_enabled() |
If true
, the GUI controls on the viewport will lay pixel perfectly.
bool handle_input_locally
Default |
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Setter |
set_handle_input_locally(value) |
Getter |
is_handling_input_locally() |
bool hdr
Default |
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Setter |
set_hdr(value) |
Getter |
get_hdr() |
If true
, the viewport rendering will receive benefits from High Dynamic Range algorithm. High Dynamic Range allows the viewport to receive values that are outside the 0-1 range. In Godot HDR uses 16 bits, meaning it does not store the full range of a floating point number.
Note: Requires usage to be set to USAGE_3D or USAGE_3D_NO_EFFECTS, since HDR is not supported for 2D.
bool keep_3d_linear
Default |
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Setter |
set_keep_3d_linear(value) |
Getter |
get_keep_3d_linear() |
If true
, the result after 3D rendering will not have a linear to sRGB color conversion applied. This is important when the viewport is used as a render target where the result is used as a texture on a 3D object rendered in another viewport. It is also important if the viewport is used to create data that is not color based (noise, heightmaps, pickmaps, etc.). Do not enable this when the viewport is used as a texture on a 2D object or if the viewport is your final output.
MSAA msaa
Default |
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Setter |
set_msaa(value) |
Getter |
get_msaa() |
The multisample anti-aliasing mode. A higher number results in smoother edges at the cost of significantly worse performance. A value of 4 is best unless targeting very high-end systems.
bool own_world
Default |
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Setter |
set_use_own_world(value) |
Getter |
is_using_own_world() |
If true
, the viewport will use World defined in world
property.
bool physics_object_picking
Default |
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Setter |
set_physics_object_picking(value) |
Getter |
get_physics_object_picking() |
If true
, the objects rendered by viewport become subjects of mouse picking process.
bool render_direct_to_screen
Default |
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Setter |
set_use_render_direct_to_screen(value) |
Getter |
is_using_render_direct_to_screen() |
If true
, renders the Viewport directly to the screen instead of to the root viewport. Only available in GLES2. This is a low-level optimization and should not be used in most cases. If used, reading from the Viewport or from SCREEN_TEXTURE
becomes unavailable. For more information see VisualServer.viewport_set_render_direct_to_screen.
ClearMode render_target_clear_mode
Default |
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Setter |
set_clear_mode(value) |
Getter |
get_clear_mode() |
The clear mode when viewport used as a render target.
Note: This property is intended for 2D usage.
UpdateMode render_target_update_mode
Default |
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Setter |
set_update_mode(value) |
Getter |
get_update_mode() |
The update mode when viewport used as a render target.
bool render_target_v_flip
Default |
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Setter |
set_vflip(value) |
Getter |
get_vflip() |
If true
, the result of rendering will be flipped vertically.
ShadowAtlasQuadrantSubdiv shadow_atlas_quad_0
Default |
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Setter |
set_shadow_atlas_quadrant_subdiv(value) |
Getter |
get_shadow_atlas_quadrant_subdiv() |
The subdivision amount of the first quadrant on the shadow atlas.
ShadowAtlasQuadrantSubdiv shadow_atlas_quad_1
Default |
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Setter |
set_shadow_atlas_quadrant_subdiv(value) |
Getter |
get_shadow_atlas_quadrant_subdiv() |
The subdivision amount of the second quadrant on the shadow atlas.
ShadowAtlasQuadrantSubdiv shadow_atlas_quad_2
Default |
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Setter |
set_shadow_atlas_quadrant_subdiv(value) |
Getter |
get_shadow_atlas_quadrant_subdiv() |
The subdivision amount of the third quadrant on the shadow atlas.
ShadowAtlasQuadrantSubdiv shadow_atlas_quad_3
Default |
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Setter |
set_shadow_atlas_quadrant_subdiv(value) |
Getter |
get_shadow_atlas_quadrant_subdiv() |
The subdivision amount of the fourth quadrant on the shadow atlas.
int shadow_atlas_size
Default |
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Setter |
set_shadow_atlas_size(value) |
Getter |
get_shadow_atlas_size() |
The shadow atlas' resolution (used for omni and spot lights). The value will be rounded up to the nearest power of 2.
Note: If this is set to 0, shadows won't be visible. Since user-created viewports default to a value of 0, this value must be set above 0 manually.
Vector2 size
Default |
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Setter |
set_size(value) |
Getter |
get_size() |
The width and height of viewport.
bool size_override_stretch
Default |
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Setter |
set_size_override_stretch(value) |
Getter |
is_size_override_stretch_enabled() |
If true
, the size override affects stretch as well.
bool transparent_bg
Default |
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Setter |
set_transparent_background(value) |
Getter |
has_transparent_background() |
If true
, the viewport should render its background as transparent.
Usage usage
Default |
|
Setter |
set_usage(value) |
Getter |
get_usage() |
The rendering mode of viewport.
World world
Setter |
set_world(value) |
Getter |
get_world() |
The custom World which can be used as 3D environment source.
World2D world_2d
Setter |
set_world_2d(value) |
Getter |
get_world_2d() |
The custom World2D which can be used as 2D environment source.
Method Descriptions¶
World find_world ( ) const
Returns the 3D world of the viewport, or if none the world of the parent viewport.
World2D find_world_2d ( ) const
Returns the 2D world of the viewport.
Camera get_camera ( ) const
Returns the active 3D camera.
Transform2D get_final_transform ( ) const
Returns the total transform of the viewport.
Control get_modal_stack_top ( ) const
Returns the topmost modal in the stack.
Vector2 get_mouse_position ( ) const
Returns the mouse position relative to the viewport.
int get_render_info ( RenderInfo info )
Returns information about the viewport from the rendering pipeline.
ShadowAtlasQuadrantSubdiv get_shadow_atlas_quadrant_subdiv ( int quadrant ) const
Returns the ShadowAtlasQuadrantSubdiv of the specified quadrant.
Vector2 get_size_override ( ) const
Returns the size override set with set_size_override.
ViewportTexture get_texture ( ) const
Returns the viewport's texture.
Note: Due to the way OpenGL works, the resulting ViewportTexture is flipped vertically. You can use Image.flip_y on the result of Texture.get_data to flip it back, for example:
var img = get_viewport().get_texture().get_data()
img.flip_y()
RID get_viewport_rid ( ) const
Returns the viewport's RID from the VisualServer.
Rect2 get_visible_rect ( ) const
Returns the visible rectangle in global screen coordinates.
Variant gui_get_drag_data ( ) const
Returns the drag data from the GUI, that was previously returned by Control.get_drag_data.
bool gui_has_modal_stack ( ) const
Returns true
if there are visible modals on-screen.
bool gui_is_dragging ( ) const
Returns true
if the viewport is currently performing a drag operation.
void input ( InputEvent local_event )
bool is_input_handled ( ) const
bool is_size_override_enabled ( ) const
Returns true
if the size override is enabled. See set_size_override.
void set_attach_to_screen_rect ( Rect2 rect )
Attaches this Viewport
to the root Viewport
with the specified rectangle. This bypasses the need for another node to display this Viewport
but makes you responsible for updating the position of this Viewport
manually.
void set_input_as_handled ( )
Stops the input from propagating further down the SceneTree.
void set_shadow_atlas_quadrant_subdiv ( int quadrant, ShadowAtlasQuadrantSubdiv subdiv )
Sets the number of subdivisions to use in the specified quadrant. A higher number of subdivisions allows you to have more shadows in the scene at once, but reduces the quality of the shadows. A good practice is to have quadrants with a varying number of subdivisions and to have as few subdivisions as possible.
void set_size_override ( bool enable, Vector2 size=Vector2( -1, -1 ), Vector2 margin=Vector2( 0, 0 ) )
Sets the size override of the viewport. If the enable
parameter is true
the override is used, otherwise it uses the default size. If the size parameter is (-1, -1)
, it won't update the size.
void unhandled_input ( InputEvent local_event )
void update_worlds ( )
Forces update of the 2D and 3D worlds.
void warp_mouse ( Vector2 to_position )
Warps the mouse to a position relative to the viewport.