;;; guile-sdl3 -- Scheme bindings for SDL3
;;; Copyright © 2024 David Thompson <dthompson2@worcester.edu>
;;;
;;; Licensed under the Apache License, Version 2.0 (the "License");
;;; you may not use this file except in compliance with the License.
;;; You may obtain a copy of the License at
;;;
;;;    http://www.apache.org/licenses/LICENSE-2.0
;;;
;;; Unless required by applicable law or agreed to in writing, software
;;; distributed under the License is distributed on an "AS IS" BASIS,
;;; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
;;; See the License for the specific language governing permissions and
;;; limitations under the License.

;;; Commentary:
;;
;; Low-level bindings for SDL_gpu.h.
;;
;;; Code:

(define-module (sdl3 bindings gpu)
  #:use-module (sdl3 bindings utils)
  #:use-module (system foreign)
  #:export (;; SDL_gpu.h
            SDL_GPUShaderFormat
            SDL_GPU_SHADERFORMAT_INVALID
            SDL_GPU_SHADERFORMAT_PRIVATE
            SDL_GPU_SHADERFORMAT_SPIRV
            SDL_GPU_SHADERFORMAT_DXBC
            SDL_GPU_SHADERFORMAT_DXIL
            SDL_GPU_SHADERFORMAT_MSL
            SDL_GPU_SHADERFORMAT_METALLIB

            gpu-device?
            wrap-gpu-device
            unwrap-gpu-device
            gpu-device-destroyed?
            set-gpu-device-destroyed!

            SDL_CreateGPUDevice
            SDL_DestroyGPUDevice
            SDL_ClaimWindowForGPUDevice))

(define SDL_GPUShaderFormat uint32)
(define SDL_GPU_SHADERFORMAT_INVALID  0)
(define SDL_GPU_SHADERFORMAT_PRIVATE  1)
(define SDL_GPU_SHADERFORMAT_SPIRV    2)
(define SDL_GPU_SHADERFORMAT_DXBC     4)
(define SDL_GPU_SHADERFORMAT_DXIL     8)
(define SDL_GPU_SHADERFORMAT_MSL      16)
(define SDL_GPU_SHADERFORMAT_METALLIB 32)

(define-sdl-pointer-type <gpu-device>
  gpu-device? wrap-gpu-device unwrap-gpu-device
  gpu-device-destroyed? set-gpu-device-destroyed!
  (lambda (device port)
    (display "#<gpu-device>" port)))

(define-sdl SDL_CreateGPUDevice SDL_GPUShaderFormat bool '* -> '*)
(define-sdl SDL_DestroyGPUDevice '*)
(define-sdl SDL_ClaimWindowForGPUDevice '* '* -> bool)