VfxAttribute

Remarks

A fixed set rather than an open one, for now. Every attribute here has a known type, a known meaning to the renderers, and a place in the compiled graph's declaration — which is what lets storage be allocated for exactly the ones a graph touches and nothing else. An effect that never rotates its particles pays nothing for rotation.

The values are bit positions, so a declaration is a mask and "does this graph use rotation" is one instruction.

Fields and properties (10)

• None

  Nothing.

• Position

  Where the particle is, in the effect's space. Float3.

• Velocity

  How it is moving, per second. Float3.

• Size

  How big it is. Float.

• Colour

  Its colour and opacity, linear and premultiplied by nothing. Float4.

• Lifetime

  How long it lives, in seconds. Float.

• Age

  How long it has lived. Float.

• Rotation

  Its roll, in radians. Float.

• AngularVelocity

  How fast that roll is changing, in radians per second. Float.

• Identifier

  The particle's identifier, unique within its system for as long as it lives. UInt.

Used by (21)

• ParticleBufferVixen.Vfx
• SweepVixen.Vfx
• VfxAttributesVixen.Vfx
• VfxCollisionTestsVixen.Vfx.Tests
• VfxCompiledGraphVixen.Vfx
• VfxCompiledGraphTestsVixen.Vfx.Tests
• VfxCustomAttributeTestsVixen.Vfx.Tests
• VfxGeometryBuilderVixen.Vfx
• VfxGeometryTestsVixen.Vfx.Tests
• VfxGpuSimulationVixen.Rendering
• VfxGpuSortVixen.Rendering
• VfxOpcodesVixen.Vfx
• VfxRendererVixen.Vfx
• VfxRibbonTestsVixen.Vfx.Tests
• VfxShaderBindingVixen.Vfx
• VfxShaderEmitterVixen.Vfx
• VfxShaderEmitterTestsVixen.Vfx.Tests
• VfxShaderPackingVixen.Vfx
• VfxSimulationVixen.Vfx
• VfxSubEmitterVixen.Vfx
• VfxPreviewViewVixen.Editor.AssetEditors