New pipelines no longer treat morphs as primary deformation. Instead:
This drastically reduces the number of active morphs per frame (< 10 typical) while maintaining high visual fidelity.
Ten years ago, morph targets were a memory nightmare. Storing 50 facial expressions meant storing 50 copies of a 50,000-polygon head. Today, the workflow has evolved:
Practical tip: when adopting PCA/latent methods, retain a small set of explicit blendshapes for critical expressions (eyes, lips) to preserve animator control. morph target animation new
When most artists hear "morph targets," they think of eyebrow raises and mouth corners. The new wave applies morphing to domains previously dominated by physics or cloth simulation.
Instead of blending on the CPU or in the vertex shader serially:
Benefits:
Example kernel concept (simplified):
RWStructuredBuffer<Vertex> outputVertices : register(u0); StructuredBuffer<MorphDelta> deltas[MAX_TARGETS]; float weights[MAX_TARGETS];
[numthreads(64,1,1)] void MorphBlendCS(uint3 id : SV_DispatchThreadID) uint vertexIdx = id.x; float3 finalPos = basePositions[vertexIdx]; for (int t = 0; t < numActiveTargets; t++) finalPos += deltas[t][vertexIdx].delta * weights[t]; outputVertices[vertexIdx].position = finalPos;
Traditionally, morph targets (also called blend shapes or vertex morphs) stored a unique copy of the base mesh for every pose. A character with 200 facial expressions meant loading 201 versions of the same head into RAM. This caused three massive problems:
If you want a short example of a GPU shader blend, sample data structures for export, or a step-by-step pipeline for facial rigging with morph targets, tell me which you prefer.
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