I got this passthrough vertex shader I used from Apple's sample code:
vertex VertexIO vertexPassThrough(device packed_float4 *pPosition [[ buffer(0) ]],
device packed_float2 *pTexCoords [[ buffer(1) ]],
uint vid [[ vertex_id ]])
{
VertexIO outVertex;
outVertex.position = pPosition[vid];
outVertex.textureCoord = pTexCoords[vid];
return outVertex;
}
This worked in Swift 4/Xcode 10/iOS 12. Now I with Swift 5/Xcode 11/iOS 13, I get this warning:
writable resources in non-void vertex function
const device ...
for those buffers. – Antirrhinum