@babylonjs/core
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Getting started? Play directly with the Babylon.js API using our [playground](https://playground.babylonjs.com/). It also contains a lot of samples to learn how to use it.
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TypeScript
import type { Nullable, AbstractEngine, DrawWrapper, IColor4Like, Layer, FrameGraphTextureHandle, Effect, FrameGraphTextureManager, ObjectRenderer, Scene, FrameGraphRenderTarget, UtilityLayerRenderer, IStencilState } from "../index.js";
import { FrameGraphContext } from "./frameGraphContext.js";
/**
* Frame graph context used render passes.
* @experimental
*/
export declare class FrameGraphRenderContext extends FrameGraphContext {
private readonly _effectRenderer;
private readonly _effectRendererBack;
private _currentRenderTarget;
private _debugMessageWhenTargetBound;
private _debugMessageHasBeenPushed;
private _renderTargetIsBound;
private readonly _copyTexture;
private static _IsObjectRenderer;
/** @internal */
constructor(engine: AbstractEngine, textureManager: FrameGraphTextureManager, scene: Scene);
/**
* Checks whether a texture handle points to the backbuffer's color or depth texture
* @param handle The handle to check
* @returns True if the handle points to the backbuffer's color or depth texture, otherwise false
*/
isBackbuffer(handle: FrameGraphTextureHandle): boolean;
/**
* Checks whether a texture handle points to the backbuffer's color texture
* @param handle The handle to check
* @returns True if the handle points to the backbuffer's color texture, otherwise false
*/
isBackbufferColor(handle: FrameGraphTextureHandle): boolean;
/**
* Checks whether a texture handle points to the backbuffer's depth texture
* @param handle The handle to check
* @returns True if the handle points to the backbuffer's depth texture, otherwise false
*/
isBackbufferDepthStencil(handle: FrameGraphTextureHandle): boolean;
/**
* Creates a (frame graph) render target wrapper
* Note that renderTargets or renderTargetDepth can be undefined, but not both at the same time!
* @param name Name of the render target wrapper
* @param renderTargets Render target handles (textures) to use
* @param renderTargetDepth Render target depth handle (texture) to use
* @param depthReadOnly If true, the depth buffer will be read-only
* @param stencilReadOnly If true, the stencil buffer will be read-only
* @returns The created render target wrapper
*/
createRenderTarget(name: string, renderTargets?: FrameGraphTextureHandle | FrameGraphTextureHandle[], renderTargetDepth?: FrameGraphTextureHandle, depthReadOnly?: boolean, stencilReadOnly?: boolean): FrameGraphRenderTarget;
/**
* Clears the current render buffer or the current render target (if any is set up)
* @param color Defines the color to use
* @param backBuffer Defines if the back buffer must be cleared
* @param depth Defines if the depth buffer must be cleared
* @param stencil Defines if the stencil buffer must be cleared
* @param stencilClearValue Defines the value to use to clear the stencil buffer (default is 0)
*/
clear(color: Nullable<IColor4Like>, backBuffer: boolean, depth: boolean, stencil?: boolean, stencilClearValue?: number): void;
/**
* Clears the color attachments of the current render target
* @param color Defines the color to use
* @param attachments The attachments to clear
*/
clearColorAttachments(color: Nullable<IColor4Like>, attachments: number[]): void;
/**
* Clears all attachments (color(s) + depth/stencil) of the current render target
* @param color Defines the color to use
* @param attachments The attachments to clear
* @param backBuffer Defines if the back buffer must be cleared
* @param depth Defines if the depth buffer must be cleared
* @param stencil Defines if the stencil buffer must be cleared
* @param stencilClearValue Defines the value to use to clear the stencil buffer (default is 0)
*/
clearAttachments(color: Nullable<IColor4Like>, attachments: number[], backBuffer: boolean, depth: boolean, stencil?: boolean, stencilClearValue?: number): void;
/**
* Binds the attachments to the current render target
* @param attachments The attachments to bind
*/
bindAttachments(attachments: number[]): void;
/**
* Generates mipmaps for the current render target
*/
generateMipMaps(): void;
/**
* Sets the texture sampling mode for a given texture handle
* @param handle Handle of the texture to set the sampling mode for
* @param samplingMode Sampling mode to set
*/
setTextureSamplingMode(handle: FrameGraphTextureHandle, samplingMode: number): void;
/**
* Binds a texture handle to a given effect (resolves the handle to a texture and binds it to the effect)
* @param effect The effect to bind the texture to
* @param name The name of the texture in the effect
* @param handle The handle of the texture to bind
*/
bindTextureHandle(effect: Effect, name: string, handle: FrameGraphTextureHandle): void;
/**
* Applies a full-screen effect to the current render target
* @param drawWrapper The draw wrapper containing the effect to apply
* @param customBindings The custom bindings to use when applying the effect (optional)
* @param stencilState The stencil state to use when applying the effect (optional)
* @param disableColorWrite If true, color write will be disabled when applying the effect (optional)
* @param drawBackFace If true, the fullscreen quad will be drawn as a back face (in CW - optional)
* @param depthTest If true, depth testing will be enabled when applying the effect (default is false)
* @returns True if the effect was applied, otherwise false (effect not ready)
*/
applyFullScreenEffect(drawWrapper: DrawWrapper, customBindings?: () => void, stencilState?: IStencilState, disableColorWrite?: boolean, drawBackFace?: boolean, depthTest?: boolean): boolean;
/**
* Copies a texture to the current render target
* @param sourceTexture The source texture to copy from
* @param forceCopyToBackbuffer If true, the copy will be done to the back buffer regardless of the current render target
*/
copyTexture(sourceTexture: FrameGraphTextureHandle, forceCopyToBackbuffer?: boolean): void;
/**
* Renders a RenderTargetTexture or a layer
* @param object The RenderTargetTexture/Layer to render
* @param viewportWidth The width of the viewport (optional for Layer, but mandatory for ObjectRenderer)
* @param viewportHeight The height of the viewport (optional for Layer, but mandatory for ObjectRenderer)
*/
render(object: Layer | ObjectRenderer | UtilityLayerRenderer, viewportWidth?: number, viewportHeight?: number): void;
/**
* Binds a render target texture so that upcoming draw calls will render to it
* Note: it is a lazy operation, so the render target will only be bound when needed. This way, it is possible to call
* this method several times with different render targets without incurring the cost of binding if no draw calls are made
* @param renderTarget The handle of the render target texture to bind (default: undefined, meaning "back buffer"). Pass an array for MRT rendering.
* @param debugMessage Optional debug message to display when the render target is bound (visible in PIX, for example)
*/
bindRenderTarget(renderTarget?: FrameGraphRenderTarget, debugMessage?: string): void;
/** @internal */
_flushDebugMessages(): void;
/** @internal */
_applyRenderTarget(): void;
/** @internal */
_isReady(): boolean;
/** @internal */
_dispose(): void;
}