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Reconfigure how sampling is done so that we do it in 16x16 chunks

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This commit is contained in:
Eryn Wells 2018-10-27 10:14:23 -07:00
parent af3031ece6
commit a14943c42f
3 changed files with 48 additions and 20 deletions
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4
MetaballsKit/Renderer.swift
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@ -206,7 +206,7 @@ public class Renderer: NSObject, MTKViewDelegate {
if self.pixelGeometry == nil {
self.pixelGeometry = self.pixelGeometry(forViewSize: view.drawableSize)
}
let pixelGeometry = self.pixelGeometry!
// let pixelGeometry = self.pixelGeometry!
if let renderPass = view.currentRenderPassDescriptor {
// Render the per-pixel metaballs
@ -240,7 +240,7 @@ public class Renderer: NSObject, MTKViewDelegate {
encoder.setVertexBuffer(marchingSquares.gridGeometry, offset: 0, index: 1)
encoder.setVertexBuffer(parametersBuffer, offset: 0, index: 2)
encoder.setFragmentBuffer(marchingSquares.contourIndexesBuffer, offset: 0, index: 0)
encoder.drawPrimitives(type: .triangle, vertexStart: 0, vertexCount: Rect.geometry.count, instanceCount: marchingSquares.samplesCount)
encoder.drawPrimitives(type: .triangle, vertexStart: 0, vertexCount: Rect.geometry.count, instanceCount: marchingSquares.contourIndexesCount)
encoder.endEncoding()
didEncode = true
}