Method _prepareMipmapData

src/webgpu/p5.RendererWebGPU.js:4066–4087

(size, mipLevels)

     * Prepare WebGPU texture to accumulate mip levels directly
     */
    _prepareMipmapData(size, mipLevels) {
      // Create WebGPU texture with mipmaps upfront
      const textureDescriptor = {
        size: {
          width: size,
          height: size,
          depthOrArrayLayers: 1,
        },
        mipLevelCount: mipLevels,
        format: 'rgba8unorm',
        usage: GPUTextureUsage.TEXTURE_BINDING | GPUTextureUsage.COPY_DST | GPUTextureUsage.RENDER_ATTACHMENT,
      };

      const gpuTexture = this.device.createTexture(textureDescriptor);

      return {
        gpuTexture,
        size,
        mipLevels,
        format: 'rgba8unorm'
      };
    }

    /*
     * Copy framebuffer content directly to WebGPU texture mip level