Apple-2-Tools/MetalConverter320
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Update Converter.swift

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markpmlim 2021-01-26 09:50:46 +08:00 committed by GitHub
parent 4399c39bae
commit 9011a279b3
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1 changed files with 12 additions and 6 deletions
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18
ConverterIIGS320.playground/Sources/Converter.swift
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@ -212,13 +212,19 @@ public class MetalViewRenderer: NSObject, MTKViewDelegate {
offset: 0,
at: 2)
let threadGroupCount = MTLSizeMake(8, 8, 1)
let threadGroups = MTLSizeMake(texture.width / threadGroupCount.width,
texture.height / threadGroupCount.height,
1)
// Use the max # of threads available for parallel processing.
let w = cps.threadExecutionWidth
let h = cps.maxTotalThreadsPerThreadgroup / w
let threadsPerThreadgroup = MTLSizeMake(w, h, 1)
let threadgroupsPerGrid = MTLSizeMake((texture.width + w - 1) / w,
(texture.height + h - 1) / h,
1)
// Execute the kernel function
commandComputeEncoder.dispatchThreadgroups(threadGroups,
threadsPerThreadgroup: threadGroupCount)
// Note: boundary checks are necessary in the compute shader
// unless we use the alternative method
// dispatchThreads:threadsPerThreadgroup:
commandComputeEncoder.dispatchThreadgroups(threadgroupsPerGrid,
threadsPerThreadgroup: threadsPerThreadgroup)
commandComputeEncoder.endEncoding()
commandBuffer.commit()
}