Imported from Dominik-Steinweg/Fragdachse (.ai/vendor/phaser-skills/v4-new-features/SKILL.md). Install upstream with npx skills add Dominik-Steinweg/Fragdachse --skill v4-new-features. Copyright stays with the author.

Phaser 4 New Features

New features and capabilities in Phaser 4: Filters (replacing FX/BitmapMask), RenderNodes (replacing Pipelines), CaptureFrame, Gradient, Noise game objects, SpriteGPULayer, TilemapGPULayer, Lighting component, RenderSteps, and new tint modes.

Related skills: ../v3-to-v4-migration/SKILL.md, ../filters-and-postfx/SKILL.md, ../game-object-components/SKILL.md, ../tilemaps/SKILL.md

Migrating from v3? See the v3 to v4 Migration Guide for step-by-step code changes, removed APIs, and a migration checklist.

Overview: What Changed in v4

Phaser 4 is a complete overhaul of the WebGL rendering engine. The v3 renderer let each subsystem manage WebGL state independently, causing conflicts (e.g. certain FX breaking Masks). v4 centralizes WebGL state management through a RenderNode graph, where each node handles exactly one rendering task.

Key Removals

Key Additions

• New GameObjects: CaptureFrame, Gradient, Noise, NoiseCell2D/3D/4D, NoiseSimplex2D/3D, SpriteGPULayer, Stamp, TilemapGPULayer
• New Components: Lighting, RenderSteps, RenderNodes
• New Tint Modes: MULTIPLY, FILL, ADD, SCREEN, OVERLAY, HARD_LIGHT
• New Filters: Blend, Blocky, CombineColorMatrix, GradientMap, ImageLight, Key, Mask, NormalTools, PanoramaBlur, ParallelFilters, Quantize, Sampler, Threshold
• GL Orientation: v4 uses standard GL orientation (Y=0 at bottom for textures)

Filters System (Replacing FX and BitmapMask)

Full reference: filters-and-postfx.md

Filters unify the v3 FX and Mask systems. Every filter takes an input image and produces an output image via a shader pass. Filters can be applied to any game object or camera -- v3 had restrictions on which objects supported FX.

// v3 approach (FX):
sprite.preFX.addGlow(0xff00ff, 4);
sprite.postFX.addBlur(0, 2, 2, 1);

// v4 approach (Filters):
sprite.enableFilters();
sprite.filters.internal.addGlow(0xff00ff, 4, 0, 1);
sprite.filters.external.addBlur(0, 2, 2, 1);

// v3 approach (BitmapMask):
const mask = new Phaser.Display.Masks.BitmapMask(scene, maskImage);
sprite.setMask(mask);

// v4 approach (FilterMask):
sprite.enableFilters();
sprite.filters.internal.addMask(maskImage);

Internal vs External: Internal filters run before the camera transform (object-local space, cheaper). External filters run after (screen space, full-resolution).

RenderNodes (Replacing Pipelines)

In v3, a Pipeline was a rendering system that often handled multiple responsibilities. In v4, each RenderNode handles a single rendering task via its run() method. Some nodes also have a batch() method to accumulate state before drawing.

Architecture

The RenderNodeManager (on the WebGL renderer) owns all render nodes. Game objects reference nodes through role-based maps.

// RenderNode roles on a game object:
// - 'Submitter': runs other node roles for each element
// - 'Transformer': provides vertex coordinates
// - 'Texturer': handles textures

// GameObjects have default and custom render node maps:
gameObject.defaultRenderNodes  // built-in nodes per role
gameObject.customRenderNodes   // overrides per role
gameObject.renderNodeData      // data keyed by node name

Setting Custom RenderNodes

// Override a specific render role:
gameObject.setRenderNodeRole('Submitter', 'MyCustomSubmitter');

// Pass data to a render node:
gameObject.setRenderNodeRole('Transformer', 'MyTransformer', {
    customProperty: 42
});

// Remove a custom node (falls back to default):
gameObject.setRenderNodeRole('Submitter', null);

Built-in RenderNode Types

Batch Handlers (accumulate and draw multiple objects per draw call):

• BatchHandlerQuad -- standard quad batching (Image, Sprite, BitmapText, etc.)
• BatchHandlerQuadSingle -- single-quad variant
• BatchHandlerTileSprite -- TileSprite batching
• BatchHandlerTriFlat -- flat triangle batching (Graphics, Shape)
• BatchHandlerPointLight -- point light batching
• BatchHandlerStrip -- triangle strip batching

Submitters (coordinate rendering per object type):

• SubmitterQuad, SubmitterTile, SubmitterTileSprite
• SubmitterSpriteGPULayer, SubmitterTilemapGPULayer

Transformers (compute vertex positions):

• TransformerImage, TransformerStamp, TransformerTile, TransformerTileSprite

Texturers (manage texture binding):

• TexturerImage, TexturerTileSprite

Filters (post-processing -- see filters-and-postfx.md):

• BaseFilter, BaseFilterShader
• FilterBarrel, FilterBlend, FilterBlocky, FilterBlur (Low/Med/High variants)
• FilterBokeh, FilterColorMatrix, FilterCombineColorMatrix
• FilterDisplacement, FilterGlow, FilterGradientMap, FilterImageLight
• FilterKey, FilterMask, FilterNormalTools, FilterPanoramaBlur
• FilterParallelFilters, FilterPixelate, FilterQuantize
• FilterSampler, FilterShadow, FilterThreshold, FilterVignette, FilterWipe

Other:

• Camera, FillCamera, FillRect, FillPath, FillTri
• DrawLine, StrokePath, ShaderQuad
• ListCompositor, RebindContext, YieldContext
• DynamicTextureHandler

Extending: Custom RenderNodes

// Register a custom node constructor:
renderer.renderNodes.addNodeConstructor('MyNode', MyNodeClass);

// Or add a pre-built node instance:
renderer.renderNodes.addNode('MyNode', myNodeInstance);

New Game Objects

CaptureFrame

Captures the current framebuffer contents to a texture at the point in the display list where it sits. Does not render anything itself. WebGL only.

// Everything above this in the display list gets captured:
const image1 = this.add.image(400, 300, 'background');

// Enable framebuffer usage on the camera:
this.cameras.main.setForceComposite(true);

// Create the capture point:
const capture = this.add.captureFrame('myCapturedTexture');

// Use the captured texture on another object:
const overlay = this.add.image(400, 300, 'myCapturedTexture');
// Add filters to the overlay to distort the captured scene

Key details:

• Requires camera.setForceComposite(true) or a framebuffer context (Filters, DynamicTexture, camera with partial alpha)
• Inside a Container with filters, captures only that Container's contents
• Setting visible = false stops capturing
• Components: BlendMode, Depth, RenderNodes, Visible

Source: src/gameobjects/captureframe/CaptureFrame.js

Gradient

Displays GPU-rendered color gradients. Extends Shader. Supports linear, radial, and other shape modes with configurable ColorRamp containing ColorBand objects.

// Simple linear gradient:
const grad = this.add.gradient(undefined, 100, 100, 200, 200);

// Complex radial gradient with multiple color bands:
const halo = this.add.gradient({
    bands: [
        { start: 0.5, end: 0.6, colorStart: [0.5, 0.5, 1, 0], colorEnd: 0xffffff, colorSpace: 1, interpolation: 4 },
        { start: 0.6, end: 1, colorStart: 0xffffff, colorEnd: [1, 0.5, 0.5, 0], colorSpace: 1, interpolation: 3 }
    ],
    dither: true,
    repeatMode: 1,
    shapeMode: 2,       // radial
    start: { x: 0.5, y: 0.5 },
    shape: { x: 0.5, y: 0.0 }
}, 400, 300, 800, 800);

// Animate:
halo.offset = 0.1 * (1 + Math.sin(time / 1000));

Key details:

• Config: GradientQuadConfig with bands, shapeMode, repeatMode, start, shape, dither
• Colors defined via ColorRamp with ColorBand objects (supports HSV, various interpolation modes)
• Call gradient.ramp.encode() after modifying ramp data at runtime

Source: src/gameobjects/gradient/Gradient.js

Noise Game Objects

All noise types extend Shader and are WebGL only. Six variants available:

// Basic white noise:
const noise = this.add.noise({
    noiseOffset: [0, 0],
    noisePower: 1
}, 100, 100, 256, 256);

// Cellular noise with customization:
const cells = this.add.noiseCell2D({
    noiseOffset: [0, 0],
    noiseIterations: 3,
    noiseNormalMap: true    // output as normal map for lighting
}, 200, 200, 256, 256);

// Simplex noise for natural effects:
const simplex = this.add.noiseSimplex2D({
    noiseFlow: 0,           // animate this for evolution
    noiseIterations: 4,
    noiseWarpAmount: 0.5,   // turbulence
    noiseSeed: 42,
    noiseNormalMap: false
}, 300, 300, 256, 256);

Common properties across noise types:

• noiseOffset -- [x, y] array to scroll the pattern
• noisePower -- sculpt output levels (higher suppresses high values)
• noiseNormalMap -- output normal map (for lighting integration)
• noiseIterations -- detail level (cellular/simplex types)

Math equivalents: Phaser.Math.Hash(), Phaser.Math.HashCell(), Phaser.Math.HashSimplex()

Source: src/gameobjects/noise/

SpriteGPULayer

Renders very large numbers of quads (up to millions) in a single draw call by storing data in a static GPU buffer. Up to 100x faster than individual sprites. WebGL only.

const layer = this.add.spriteGPULayer(texture, size); // size = max number of members

// Add members (do this all at once, not incrementally):
const member = { x: 100, y: 200, frame: 'tree', scaleX: 1, scaleY: 1, alpha: 1 };
layer.addMember(member);

// Reuse the member object for efficiency with millions of entries:
member.x = 300;
member.y = 400;
member.frame = 'bush';
layer.addMember(member);

// Enable lighting on the layer:
layer.setLighting(true);

Key details:

• Single texture only (no multi-atlas), single image per layer
• Members support tween-like animations (fade, bounce, wave, color shift) defined at creation
• Updating buffer contents is expensive -- populate once, leave unchanged
• Power-of-two textures recommended for pixel art to avoid seaming
• "Remove" members visually by setting scaleX/scaleY/alpha to 0 (avoids buffer rebuild)
• Components: Alpha, BlendMode, Depth, ElapseTimer, Lighting, Mask, RenderNodes, TextureCrop, Visible

Source: src/gameobjects/spritegpulayer/SpriteGPULayer.js

New Components

Full component reference: game-object-components.md

Lighting Component

Replaces the v3 approach of assigning a lighting pipeline. WebGL only.

// v3 approach:
sprite.setPipeline('Light2D');

// v4 approach:
sprite.setLighting(true);

// Self-shadowing (simulates surface shadows from texture brightness):
sprite.setSelfShadow(true, 0.5, 1/3);
// Args: enabled, penumbra (lower = sharper), diffuseFlatThreshold (0-1)

// Use game-wide default for self-shadow:
sprite.setSelfShadow(null);  // reads from config.render.selfShadow

Supported on: BitmapText, Blitter, Graphics, Shape, Image, Sprite, Particles, SpriteGPULayer, Stamp, Text, TileSprite, Video, TilemapLayer, TilemapGPULayer.

Batching note: Lighting changes the shader, which breaks batches. Group lit objects together and unlit objects together for best performance.

Source: src/gameobjects/components/Lighting.js

RenderSteps Component

Allows injecting custom logic into the render process of a game object. WebGL only. The Filters system uses RenderSteps internally.

// Add a custom render step:
gameObject.addRenderStep(function (renderer, gameObject, drawingContext, parentMatrix, renderStep, displayList, displayListIndex) {
    // Custom rendering logic here
    // Call next step when ready:
    var nextFn = gameObject._renderSteps[renderStep + 1];
    if (nextFn) {
        nextFn(renderer, gameObject, drawingContext, parentMatrix, renderStep + 1, displayList, displayListIndex);
    }
});

Key details:

• Steps are stored in _renderSteps array, executed via renderWebGLStep()
• First step runs first and is responsible for calling subsequent steps
• This is how Filters defer and control the renderWebGL flow

Source: src/gameobjects/components/RenderSteps.js

RenderNodes Component

Provides defaultRenderNodes, customRenderNodes, and renderNodeData maps on game objects. See the RenderNodes section above for usage.

Source: src/gameobjects/components/RenderNodes.js

TilemapGPULayer

Full tilemap reference: tilemaps.md

High-performance GPU-based tilemap rendering. Renders the entire layer as a single quad via a specialized shader. WebGL only.

// Create via Tilemap with the gpu flag:
const map = this.make.tilemap({ key: 'level1' });
const tileset = map.addTilesetImage('tiles', 'tilesImage');
const gpuLayer = map.createLayer('Ground', tileset, 0, 0, true);  // last arg: gpu = true

Capabilities:

• Single tileset with single texture image
• Maximum 4096x4096 tiles, up to 2^23 unique tile IDs
• Tile flipping and animation supported
• Orthographic tilemaps only (no isometric/hexagonal)
• Perfect texture filtering in LINEAR mode (no tile seams)
• Cost is per-pixel, not per-tile -- no performance loss with many visible tiles

Restrictions:

• Cannot use multiple tilesets
• Editing requires manual generateLayerDataTexture() call to update
• Orthographic only

Internal data: Tile data stored in a texture (4 bytes/tile: 2 flip bits, 1 animation bit, 1 unused, 28-bit tile index). Animation data in a separate texture.

Source: src/tilemaps/TilemapGPULayer.js

For detailed configuration options, API reference tables, and source file maps, see the reference guide.