aurora/lib/dawn/BackendBinding.cpp

#include "BackendBinding.hpp"

#include <memory>

#if defined(DAWN_ENABLE_BACKEND_D3D11)
#include <dawn/native/D3D11Backend.h>
#endif
#if defined(DAWN_ENABLE_BACKEND_D3D12)
#include <dawn/native/D3D12Backend.h>
#endif
#if defined(DAWN_ENABLE_BACKEND_METAL)
#include <dawn/native/MetalBackend.h>
#endif
#if defined(DAWN_ENABLE_BACKEND_VULKAN)
#include <dawn/native/VulkanBackend.h>
#endif
#if defined(DAWN_ENABLE_BACKEND_OPENGL)
#include <SDL3/SDL_video.h>
#include <dawn/native/OpenGLBackend.h>
#endif
#if defined(DAWN_ENABLE_BACKEND_NULL)
#include <dawn/native/NullBackend.h>
#endif

namespace aurora::webgpu::utils {

//#if defined(DAWN_ENABLE_BACKEND_OPENGL)
//struct GLUserData {
//  SDL_Window* window;
//  SDL_GLContext context;
//};
//void GLMakeCurrent(void* userData) {
//  auto* data = static_cast<GLUserData*>(userData);
//  SDL_GL_MakeCurrent(data->window, data->context);
//}
//void GLDestroy(void* userData) {
//  auto* data = static_cast<GLUserData*>(userData);
//  SDL_GL_DestroyContext(data->context);
//  delete data;
//}
//#endif
//
//bool DiscoverAdapter(dawn::native::Instance* instance, [[maybe_unused]] SDL_Window* window, wgpu::BackendType type) {
//  switch (type) {
//#if defined(DAWN_ENABLE_BACKEND_D3D11)
//  case wgpu::BackendType::D3D11: {
//    dawn::native::d3d11::PhysicalDeviceDiscoveryOptions options;
//    return instance->DiscoverPhysicalDevices(&options);
//  }
//#endif
//#if defined(DAWN_ENABLE_BACKEND_D3D12)
//  case wgpu::BackendType::D3D12: {
//    dawn::native::d3d12::PhysicalDeviceDiscoveryOptions options;
//    return instance->DiscoverPhysicalDevices(&options);
//  }
//#endif
//#if defined(DAWN_ENABLE_BACKEND_METAL)
//  case wgpu::BackendType::Metal: {
//    dawn::native::metal::PhysicalDeviceDiscoveryOptions options;
//    return instance->DiscoverPhysicalDevices(&options);
//  }
//#endif
//#if defined(DAWN_ENABLE_BACKEND_VULKAN)
//  case wgpu::BackendType::Vulkan: {
//    dawn::native::vulkan::PhysicalDeviceDiscoveryOptions options;
//    return instance->DiscoverPhysicalDevices(&options);
//  }
//#endif
//#if defined(DAWN_ENABLE_BACKEND_DESKTOP_GL)
//  case wgpu::BackendType::OpenGL: {
//    SDL_GL_ResetAttributes();
//    SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
//    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 4);
//    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 4);
//    SDL_GLContext context = SDL_GL_CreateContext(window);
//    dawn::native::opengl::PhysicalDeviceDiscoveryOptions options{WGPUBackendType_OpenGL};
//    options.getProc = reinterpret_cast<void* (*)(const char*)>(SDL_GL_GetProcAddress);
//    options.makeCurrent = GLMakeCurrent;
//    options.destroy = GLDestroy;
//    options.userData = new GLUserData{
//        .window = window,
//        .context = context,
//    };
//    return instance->DiscoverPhysicalDevices(&options);
//  }
//#endif
//#if defined(DAWN_ENABLE_BACKEND_OPENGLES)
//  case wgpu::BackendType::OpenGLES: {
//    SDL_GL_ResetAttributes();
//    SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);
//    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
//    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
//    SDL_GLContext context = SDL_GL_CreateContext(window);
//    dawn::native::opengl::PhysicalDeviceDiscoveryOptions options{WGPUBackendType_OpenGLES};
//    options.getProc = reinterpret_cast<void* (*)(const char*)>(SDL_GL_GetProcAddress);
//    options.makeCurrent = GLMakeCurrent;
//    options.destroy = GLDestroy;
//    options.userData = new GLUserData{
//        .window = window,
//        .context = context,
//    };
//    return instance->DiscoverPhysicalDevices(&options);
//  }
//#endif
//#if defined(DAWN_ENABLE_BACKEND_NULL)
//  case wgpu::BackendType::Null:
//    instance->DiscoverDefaultPhysicalDevices();
//    return true;
//#endif
//  default:
//    return false;
//  }
//}

std::unique_ptr<wgpu::ChainedStruct> SetupWindowAndGetSurfaceDescriptorCocoa(SDL_Window* window);

std::unique_ptr<wgpu::ChainedStruct> SetupWindowAndGetSurfaceDescriptor(SDL_Window* window) {
#if defined(SDL_PLATFORM_MACOS)
  return SetupWindowAndGetSurfaceDescriptorCocoa(window);
#else
  const auto props = SDL_GetWindowProperties(window);
#if defined(SDL_PLATFORM_WIN32)
  std::unique_ptr<wgpu::SurfaceSourceWindowsHWND> desc =
      std::make_unique<wgpu::SurfaceSourceWindowsHWND>();
  desc->hwnd = wmInfo.info.win.window;
  desc->hinstance = wmInfo.info.win.hinstance;
  return std::move(desc);
#elif defined(SDL_PLATFORM_LINUX)
  if (SDL_strcmp(SDL_GetCurrentVideoDriver(), "wayland") == 0) {
    std::unique_ptr<wgpu::SurfaceSourceWaylandSurface> desc =
        std::make_unique<wgpu::SurfaceSourceWaylandSurface>();
    desc->display = SDL_GetPointerProperty(props, SDL_PROP_WINDOW_WAYLAND_DISPLAY_POINTER, nullptr);
    desc->surface = SDL_GetPointerProperty(props, SDL_PROP_WINDOW_WAYLAND_SURFACE_POINTER, nullptr);
    return std::move(desc);
  }
  if (SDL_strcmp(SDL_GetCurrentVideoDriver(), "x11") == 0) {
    std::unique_ptr<wgpu::SurfaceSourceXlibWindow> desc =
        std::make_unique<wgpu::SurfaceSourceXlibWindow>();
    desc->display = SDL_GetPointerProperty(props, SDL_PROP_WINDOW_X11_DISPLAY_POINTER, nullptr);
    desc->window = SDL_GetNumberProperty(props, SDL_PROP_WINDOW_X11_WINDOW_NUMBER, 0);
    return std::move(desc);
  }
#endif
  return nullptr;
#endif
}

} // namespace aurora::webgpu::utils