Ffx Fsr2 Api Vk X64dll Hot 🔖 💯

If you landed here because you want to add FSR 2 via Vulkan to a game that doesn't support it (or fix an existing implementation), follow this guide.

PFN_vkVoidFunction my_vkGetDeviceProcAddr(VkDevice device, const char* name) 
  PFN_vkVoidFunction orig = original_vkGetDeviceProcAddr(device, name);
  if (strcmp(name, "vkQueuePresentKHR")==0) return (PFN_vkVoidFunction)hooked_vkQueuePresentKHR;
  if (strcmp(name, "vkAcquireNextImageKHR")==0) return (PFN_vkVoidFunction)hooked_vkAcquireNextImageKHR;
  return orig;

hooked_vkQueuePresentKHR(...) 
  // wait for presentable image to be rendered
  // ensure inputs are captured/copied
  run_fsr2_dispatch(commandBuffer, inputs, output);
  // blit/copy FSR2 output to swapchain image
  return original_vkQueuePresentKHR(...);

prepare_descriptors(inputs);
cmdPipelineBarrier(...);
fsr2Context->Dispatch(commandBuffer, inputViews, motionVectors, depth, outputView, params);

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