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Optimize blend shape shader; 

This is ~20% faster, I think it's because all the SSBO stores are
"batched" at the end.
This commit is contained in:
bjorn 2023-04-05 21:48:06 -07:00
parent ba0412182b
commit 747c7fdddf
1 changed files with 15 additions and 9 deletions
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24
etc/shaders/blender.comp
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@ -35,6 +35,8 @@ void lovrmain() {
uint vertexIndex = baseVertex + GlobalThreadID.x;
uint blendVertexIndex = baseBlendVertex + GlobalThreadID.x;
ModelVertex vertex = vertices[vertexIndex];
for (uint i = 0; i < blendShapeCount; i++, blendVertexIndex += vertexCount) {
float weight = weights[i / 4][i % 4];
@ -42,16 +44,20 @@ void lovrmain() {
continue;
}
vertices[vertexIndex].px += blendVertex[blendVertexIndex].px * weight;
vertices[vertexIndex].py += blendVertex[blendVertexIndex].py * weight;
vertices[vertexIndex].pz += blendVertex[blendVertexIndex].pz * weight;
BlendVertex blendShape = blendVertex[blendVertexIndex];
vertices[vertexIndex].nx += blendVertex[blendVertexIndex].nx * weight;
vertices[vertexIndex].ny += blendVertex[blendVertexIndex].ny * weight;
vertices[vertexIndex].nz += blendVertex[blendVertexIndex].nz * weight;
vertex.px += blendShape.px * weight;
vertex.py += blendShape.py * weight;
vertex.pz += blendShape.pz * weight;
vertices[vertexIndex].tx += blendVertex[blendVertexIndex].tx * weight;
vertices[vertexIndex].ty += blendVertex[blendVertexIndex].ty * weight;
vertices[vertexIndex].tz += blendVertex[blendVertexIndex].tz * weight;
vertex.nx += blendShape.nx * weight;
vertex.ny += blendShape.ny * weight;
vertex.nz += blendShape.nz * weight;
vertex.tx += blendShape.tx * weight;
vertex.ty += blendShape.ty * weight;
vertex.tz += blendShape.tz * weight;
}
vertices[vertexIndex] = vertex;
}