Method constructor

src/webgpu/p5.RendererWebGPU.js:376–442

(pInst, w, h, isMainCanvas, elt)

  class RendererWebGPU extends Renderer3D {
    constructor(pInst, w, h, isMainCanvas, elt) {
      super(pInst, w, h, isMainCanvas, elt)

      // Used to group draws into one big render pass
      this.activeRenderPass = null;
      this.activeRenderPassEncoder = null;
      this.activeShaderOptions = null;
      this.activeShader = null;

      this.samplers = new Map();

      // Some uniforms update every frame, like model matrices and sometimes colors.
      // The fastest way to handle these is to use mapped memory. We'll batch those
      // into bigger buffers with dynamic offsets, separate from the usual system
      // where bind groups have their own little buffers that get cached when they
      // are unchanged
      this.uniformBufferAlignment = 256;
      this.activeUniformBuffers = [];
      this.currentUniformBuffer = undefined;
      this.uniformBufferPool = [];
      this.resettingUniformBuffers = [];

      this.dynamicEntryOffsets = new Uint32Array(64);

      // Cache for current frame's canvas texture view
      this.currentCanvasColorTexture = null;
      this.currentCanvasColorTextureView = null;

      // Single reusable staging buffer for pixel reading
      this.pixelReadBuffer = null;
      this.pixelReadBufferSize = 0;

      this.strandsBackend = wgslBackend;

      // Registry to track all shaders for uniform data pooling
      this._shadersWithPools = [];

      // Registry to track geometries with buffer pools
      this._geometriesWithPools = [];

      // Flag to track if any draws have happened that need queue submission
      this._hasPendingDraws = false;
      this._pendingCommandEncoders = [];

      // Queue of callbacks to run after next submit (mainly for safe texture deletion)
      this._postSubmitCallbacks = [];

      // Retired buffers to destroy at end of frame
      this._retiredBuffers = [];

      // Storage buffers for compute shaders
      this._storageBuffers = new Set();

      // 2D canvas for pixel reading fallback
      this._pixelReadCanvas = null;
      this._pixelReadCtx = null;
      this.mainFramebuffer = null;
      this._frameState = FRAME_STATE.PENDING;