InitFlow.h

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#pragma once
 
#include "graphics/webgpu/wgpu_types.h"
#include "graphics/webgpu/Capabilities.h"
 
#include <cstdint>
#include <string>
#include <utility>
 
namespace eve::graphics::webgpu {
 
// Stage objects are produced in a strict order: each request consumes the
// previous stage and yields the next one, so calling a later step without the
// earlier one (or out of order) is a compile error — the vk-bootstrap principle
// applied to WebGPU's async initialization.
 
struct InstanceDone {
    wgpu::Instance instance;
};
 
struct AdapterDone {
    wgpu::Instance instance;
    wgpu::Adapter adapter;
};
 
struct DeviceDone {
    wgpu::Instance instance;
    wgpu::Adapter adapter;
    wgpu::Device device;
    wgpu::Queue queue;
    Capabilities caps;
};
 
class InitFlow {
public:
    static InstanceDone createInstance();
 
    static AdapterDone requestAdapter(InstanceDone &&prev, const wgpu::Surface &compatibleSurface);
 
    static DeviceDone requestDevice(AdapterDone &&prev);
};
 
}  // namespace eve::graphics::webgpu