RenderStack¶

Overview¶

RenderProgram for repeated compositing of multiple RenderPrograms in a row with normal blending and source-over Porter-Duff composition.

RenderStack will apply normal compositing/blending to a list of RenderPrograms, where each RenderProgram in the list is drawn "on top" of all of the previous ones.

@author Jonathan Olson <jonathan.olson@colorado.edu>

Class RenderStack¶

import { RenderStack } from 'scenerystack/alpenglow';

Constructor¶

new RenderStack( children : RenderProgram[] )¶

Instance Methods¶

getName() : string¶

withChildren( children : RenderProgram[] ) : RenderStack¶

getSimplified( children : RenderProgram[] ) : RenderProgram | null¶

(protected)

evaluate( context : RenderEvaluationContext ) : Vector4¶

writeInstructions( instructions : RenderInstruction[] )¶

serialize() : SerializedRenderStack¶

Static Methods¶

combine( a : Vector4, b : Vector4 ) : Vector4¶

deserialize( obj : SerializedRenderStack ) : RenderStack¶

Class RenderInstructionOpaqueJump¶

import { RenderInstructionOpaqueJump } from 'scenerystack/alpenglow';

Constructor¶

new RenderInstructionOpaqueJump( location : RenderInstructionLocation )¶

Instance Methods¶

toString() : string¶

equals( other : RenderInstruction, areLocationsEqual : ( a: RenderInstructionLocation, b: RenderInstructionLocation ) => boolean ) : boolean¶

execute( stack : RenderExecutionStack, context : RenderEvaluationContext, executor : RenderExecutor )¶

writeBinary( encoder : ByteEncoder, getOffset : ( location: RenderInstructionLocation ) => number )¶

getBinaryLength() : number¶

Static Methods¶

fromBinary( encoder : ByteEncoder, offset : number, getLocation : ( offset: number ) => RenderInstructionLocation ) : RenderInstructionOpaqueJump¶

Static Properties¶

SKIP_RENDER_COLOR_JUMPS¶

(readonly)

Class RenderInstructionStackBlend¶

Background on the top of the stack

import { RenderInstructionStackBlend } from 'scenerystack/alpenglow';

Instance Methods¶

toString() : string¶

equals( other : RenderInstruction, areLocationsEqual : ( a: RenderInstructionLocation, b: RenderInstructionLocation ) => boolean ) : boolean¶

execute( stack : RenderExecutionStack, context : RenderEvaluationContext, executor : RenderExecutor )¶

writeBinary( encoder : ByteEncoder, getOffset : ( location: RenderInstructionLocation ) => number )¶

getBinaryLength() : number¶

Static Properties¶

INSTANCE : RenderInstructionStackBlend¶

(readonly)

Type SerializedRenderStack¶

import type { SerializedRenderStack } from 'scenerystack/alpenglow';

• type: "RenderStack"
• children: SerializedRenderProgram[]

Source Code¶

See the source for RenderStack.ts in the alpenglow repository.