dear-imgui-impl-sdlgpu3-1.0.0: README.md

# dear-imgui-impl-sdlgpu3

Renderer backend for [Dear ImGui] on the SDL3 GPU API.
Pair it with the SDL3 platform backend.

```haskell
import DearImGui.Impl.SDLGPU3 qualified as ImplSDLGPU3
import DearImGui.Raw.ImGui qualified as ImGui
import Foreign.Ptr (Ptr, nullPtr)
import SDL3.Sys qualified as SDL3

renderImGui :: Ptr SDL3.SDL_GPUCommandBuffer -> IO (Ptr SDL3.SDL_GPURenderPass) -> IO ()
renderImGui commandBuffer beginRenderPass = do
  drawData <- ImGui.getDrawData
  ImplSDLGPU3.prepareDrawData drawData commandBuffer
  renderPass <- beginRenderPass
  ImplSDLGPU3.renderDrawData drawData commandBuffer renderPass nullPtr
  SDL3.endGPURenderPass renderPass
```

[Dear ImGui]: https://github.com/ocornut/imgui