From bf9e4680eb466bcb7c9cb1bef567252bb1f2bb7d Mon Sep 17 00:00:00 2001
From: Runt <qingingrunt2010@qq.com>
Date: Fri, 27 Jun 2025 05:32:55 +0000
Subject: [PATCH] 1
---
LiveProject/tool/MetalRenderer.swift | 78 +++++++++-----------------------------
1 files changed, 19 insertions(+), 59 deletions(-)
diff --git a/LiveProject/tool/MetalRenderer.swift b/LiveProject/tool/MetalRenderer.swift
index 3e88871..791dfc8 100644
--- a/LiveProject/tool/MetalRenderer.swift
+++ b/LiveProject/tool/MetalRenderer.swift
@@ -4,75 +4,35 @@
// 渲染工具
// Created by 倪路朋 on 6/26/25.
//
+import CoreVideo
import Metal
import MetalKit
-class Renderer: NSObject, MTKViewDelegate {
- static var shared: Renderer?
+class MetalRenderer: NSObject, MTKViewDelegate {
+ var device: MTLDevice!
+ var commandQueue: MTLCommandQueue!
- private var device: MTLDevice!
- private var commandQueue: MTLCommandQueue!
- private var pipelineState: MTLRenderPipelineState!
- private var texture: MTLTexture?
- private var textureDescriptor: MTLTextureDescriptor!
- private var currentData: [UInt8]?
- private var textureWidth = 0
- private var textureHeight = 0
-
- weak var mtkView: MTKView? {
- didSet {
- guard let view = mtkView else { return }
- device = view.device
- commandQueue = device.makeCommandQueue()
-
- let library = device.makeDefaultLibrary()
- let pipelineDesc = MTLRenderPipelineDescriptor()
- pipelineDesc.vertexFunction = library?.makeFunction(name: "vertexShader")
- pipelineDesc.fragmentFunction = library?.makeFunction(name: "fragmentShader")
- pipelineDesc.colorAttachments[0].pixelFormat = view.colorPixelFormat
-
- pipelineState = try? device.makeRenderPipelineState(descriptor: pipelineDesc)
-
- Renderer.shared = self
- }
+ func setup(view: MTKView) {
+ self.device = view.device
+ self.commandQueue = device.makeCommandQueue()
+ // 初始化 texture、pipeline 等
}
- func updateFrame(data: [UInt8], width: Int, height: Int) {
- currentData = data
- textureWidth = width
- textureHeight = height
+ // ✅ 必须实现的方法 1：窗口大小改变时调用
+ func mtkView(_ view: MTKView, drawableSizeWillChange size: CGSize) {
+ // 可以留空或更新视图缩放、渲染区域等
}
+ // ✅ 必须实现的方法 2：每一帧绘制时调用
func draw(in view: MTKView) {
guard let drawable = view.currentDrawable,
- let descriptor = view.currentRenderPassDescriptor,
- let data = currentData else { return }
+ let descriptor = view.currentRenderPassDescriptor else { return }
- if texture == nil || texture?.width != textureWidth || texture?.height != textureHeight {
- textureDescriptor = MTLTextureDescriptor.texture2DDescriptor(
- pixelFormat: .rgba8Unorm,
- width: textureWidth,
- height: textureHeight,
- mipmapped: false
- )
- textureDescriptor.usage = [.shaderRead, .shaderWrite]
- texture = device.makeTexture(descriptor: textureDescriptor)
- }
-
- let region = MTLRegionMake2D(0, 0, textureWidth, textureHeight)
- data.withUnsafeBytes { ptr in
- texture?.replace(region: region, mipmapLevel: 0, withBytes: ptr.baseAddress!, bytesPerRow: textureWidth * 4)
- }
-
- let commandBuffer = commandQueue.makeCommandBuffer()
- let encoder = commandBuffer?.makeRenderCommandEncoder(descriptor: descriptor)
- encoder?.setRenderPipelineState(pipelineState)
- encoder?.setFragmentTexture(texture, index: 0)
- encoder?.drawPrimitives(type: .triangleStrip, vertexStart: 0, vertexCount: 4)
- encoder?.endEncoding()
- commandBuffer?.present(drawable)
- commandBuffer?.commit()
+ let commandBuffer = commandQueue.makeCommandBuffer()!
+ let encoder = commandBuffer.makeRenderCommandEncoder(descriptor: descriptor)!
+ // 渲染逻辑，如绘制纹理
+ encoder.endEncoding()
+ commandBuffer.present(drawable)
+ commandBuffer.commit()
}
-
- func mtkView(_ view: MTKView, drawableSizeWillChange size: CGSize) {}
}
--
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