// Adapted from the vrdashboard template (FrameAssistant commit 4a5b090),
// verified on the Steam Frame. See docs/steamframe/DESIGN.md, section 3.

#include "RenderBackend.h"

#include "OpenGLRenderBackend.h"
#if OVRAS_HAS_VULKAN
#    include "VulkanRenderBackend.h"
#endif

std::unique_ptr<RenderBackend> createRenderBackend( GraphicsApi api )
{
    switch ( api )
    {
    case GraphicsApi::OpenGL:
        return std::make_unique<OpenGLRenderBackend>();
    case GraphicsApi::Vulkan:
#if OVRAS_HAS_VULKAN
        return std::make_unique<VulkanRenderBackend>();
#else
        return nullptr; // built without Vulkan support
#endif
    }
    return nullptr;
}

bool parseGraphicsApi( const QString& name, GraphicsApi* api )
{
    const QString lower = name.toLower();
    if ( lower == QLatin1String( "opengl" ) || lower == QLatin1String( "gl" ) )
        *api = GraphicsApi::OpenGL;
    else if ( lower == QLatin1String( "vulkan" )
              || lower == QLatin1String( "vk" ) )
        *api = GraphicsApi::Vulkan;
    else
        return false;
    return true;
}