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;;; 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:
;;
;; SDL3 3D rendering and GPU compute.
;;
;;; Code:
(define-module (sdl3 gpu)
#:use-module (ice-9 match)
#:use-module (sdl3 bindings gpu)
#:use-module (sdl3 bindings video)
#:use-module (sdl3 errors)
#:use-module (srfi srfi-1)
#:use-module (system foreign)
#:export (make-gpu-device
destroy-gpu-device!
claim-window-for-gpu-device!)
#:re-export (gpu-device?
gpu-device-destroyed?))
(define* (make-gpu-device shader-formats #:key debug? driver)
(wrap-gpu-device
(sdl-assert-non-null
'make-gpu-device
(SDL_CreateGPUDevice (fold (lambda (format prev)
(logior (match format
('private SDL_GPU_SHADERFORMAT_PRIVATE)
('spirv SDL_GPU_SHADERFORMAT_SPIRV)
('dxbc SDL_GPU_SHADERFORMAT_DXBC)
('dxil SDL_GPU_SHADERFORMAT_DXIL)
('msl SDL_GPU_SHADERFORMAT_MSL)
('metallib SDL_GPU_SHADERFORMAT_METALLIB))
prev))
0 shader-formats)
(if debug? 1 0)
(if driver
(string->pointer driver)
%null-pointer)))))
(define (destroy-gpu-device! device)
(unless (gpu-device-destroyed? device)
(SDL_DestroyGPUDevice (unwrap-gpu-device device))
(set-gpu-device-destroyed! device #t)))
(define (claim-window-for-gpu-device! device window)
(sdl-assert
'claim-window-for-gpu-device!
(SDL_ClaimWindowForGPUDevice (unwrap-gpu-device device)
(unwrap-window window))))
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