VfxOperation

Remarks

Two float4s and no more, on purpose. The parameter block is a fixed size because that is what lets a compiled graph be an array rather than a graph of objects — which is what lets it be uploaded to a constant buffer verbatim, serialised without a visitor, and compared for equality in a golden test. An operation that genuinely needs more parameters than this is one that should be two operations.

Nothing here is a pointer or a delegate. Slot is an index, and it is the one thing that had to be added when attributes stopped being a closed set — but it indexes the graph's own declaration list, which travels with the operations and is fixed when they are. It is not a parameter, which is why the two-float4 rule above is untouched by it: nothing about a slot is a number the effect computes with.

Fields and properties (5)

• public VfxOpcode Opcode

  What it does.

• public uint Salt

  Which randomness it draws on. Distinct per operation, so two random values on one particle are unrelated — see FirstSalt.

• public Vector4 A

  The first four parameters. What they mean depends on the opcode.

• public Vector4 B

  The next four.

• public int Slot

  Which custom attribute the operation targets, for the opcodes that target one. Zero and ignored for every other opcode.

Methods (3)

• public VfxOperation(VfxOpcode Opcode, uint Salt, Vector4 A, Vector4 B, int Slot = 0)

  One operation, as the compiled graph stores it.

• public VfxOperation(VfxOpcode opcode, uint salt = 0)

  An operation with no parameters.

• public VfxOperation(VfxOpcode opcode, Vector4 a, uint salt = 0)

  An operation with one parameter vector.

Used by (27)

• SweepBenchmarksVixen.Benchmarks.Vfx
• ParticleRenderFeatureTestsVixen.Rendering.Tests
• SweepVixen.Vfx
• VfxAgreementTestsVixen.Vfx.Gpu.Tests
• VfxCollisionTestsVixen.Vfx.Tests
• VfxCompiledGraphVixen.Vfx
• VfxCompiledGraphTestsVixen.Vfx.Tests
• VfxCustomAttributeTestsVixen.Vfx.Tests
• VfxEffectContentVixen.Rendering
• VfxEffectContentTestsVixen.Rendering.Tests
• VfxForceTestsVixen.Vfx.Tests
• VfxGeometryTestsVixen.Vfx.Tests
• VfxOperationRowVixen.Rendering
• VfxParallelTestsVixen.Vfx.Tests
• VfxReapTestsVixen.Vfx.Gpu.Tests
• VfxShaderEmitterVixen.Vfx
• VfxShaderEmitterTestsVixen.Vfx.Tests
• VfxSimulationVixen.Vfx
• VfxSortTestsVixen.Vfx.Gpu.Tests
• VfxSystemTestsVixen.Vfx.Tests
• AttractNodeVixen.Editor.VfxGraph
• CollidePlaneNodeVixen.Editor.VfxGraph
• ColourOverLifeNodeVixen.Editor.VfxGraph
• PositionInBoxNodeVixen.Editor.VfxGraph
• TurbulenceNodeVixen.Editor.VfxGraph
• VfxGraphBuilderVixen.Editor.VfxGraph
• VfxGraphCompilerTestsVixen.Editor.VfxGraph.Tests