From 567863b2398b6832f686b258709396572af0e980 Mon Sep 17 00:00:00 2001
From: David Thompson <dthompson2@worcester.edu>
Date: Wed, 2 Oct 2024 21:22:19 -0400
Subject: First commit!

---
 sdl3/gpu.scm | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 sdl3/gpu.scm

(limited to 'sdl3/gpu.scm')

diff --git a/sdl3/gpu.scm b/sdl3/gpu.scm
new file mode 100644
index 0000000..d1129f3
--- /dev/null
+++ b/sdl3/gpu.scm
@@ -0,0 +1,63 @@
+;;; 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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