Fix mvec calculation of dynamic geometry (#400)

Co-authored-by: Ren.Haocheng <[email protected]>
NVIDIAGameWorks · Oct 30, 2023 · 921b3f6 · 921b3f6
1 parent 8526e89
commit 921b3f6
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/Source/Falcor/Scene/Raster.slang b/Source/Falcor/Scene/Raster.slang
@@ -94,7 +94,7 @@ VSOut defaultVS(VSIn vIn)
     GeometryInstanceData instance = gScene.getGeometryInstance(instanceID);
     if (instance.isDynamic())
     {
-        uint prevVertexIndex = gScene.meshes[instance.geometryIndex].prevVbOffset + vIn.vertexID;
+        uint prevVertexIndex = gScene.meshes[instance.geometryID].prevVbOffset + vIn.vertexID;
         prevPos = gScene.prevVertices[prevVertexIndex].position;
     }
     float3 prevPosW = mul(gScene.getPrevWorldMatrix(instanceID), float4(prevPos, 1.f)).xyz;