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;;; Chickadee Game Toolkit
;;; Copyright © 2023 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:
;;
;; Pipeline layout specifications.
;;
;;; Code:
(define-module (chickadee graphics layout)
#:use-module (ice-9 match)
#:use-module (srfi srfi-9)
#:export (<vertex-attribute>
make-vertex-attribute
vertex-attribute?
vertex-attribute-format
vertex-attribute-offset
<vertex-buffer-layout>
make-vertex-buffer-layout
vertex-buffer-layout?
vertex-buffer-layout-stride
vertex-buffer-layout-step-mode
vertex-buffer-layout-attributes
<texture-layout>
make-texture-layout
texture-layout?
texture-layout-sample-type
texture-layout-dimension
texture-layout-multisample?
<sampler-layout>
make-sampler-layout
sampler-layout?
sampler-layout-type
<buffer-layout>
make-buffer-layout
buffer-layout?
buffer-layout-type
buffer-layout-min-size))
(define-record-type <vertex-attribute>
(%make-vertex-attribute format offset)
vertex-attribute?
(format vertex-attribute-format)
(offset vertex-attribute-offset))
(define* (make-vertex-attribute #:key format (offset 0))
(%make-vertex-attribute format offset))
(define-record-type <vertex-buffer-layout>
(%make-vertex-buffer-layout stride step-mode attributes)
vertex-buffer-layout?
(stride vertex-buffer-layout-stride)
(step-mode vertex-buffer-layout-step-mode)
(attributes vertex-buffer-layout-attributes))
(define* (make-vertex-buffer-layout #:key stride (step-mode 'vertex)
(attributes #()))
(%make-vertex-buffer-layout stride step-mode attributes))
(define-record-type <texture-layout>
(%make-texture-layout sample-type dimension multisample?)
texture-layout?
(sample-type texture-layout-sample-type)
(dimension texture-layout-dimension)
(multisample? texture-layout-multisample?))
(define* (make-texture-layout #:key (sample-type 'float) (dimension '2d)
multisample?)
(%make-texture-layout sample-type dimension multisample?))
(define-record-type <sampler-layout>
(%make-sampler-layout type)
sampler-layout?
(type sampler-layout-type))
(define* (make-sampler-layout #:key (type 'filtering))
(%make-sampler-layout type))
(define-record-type <buffer-layout>
(%make-buffer-layout type min-size)
buffer-layout?
(type buffer-layout-type)
(min-size buffer-layout-min-size))
(define* (make-buffer-layout #:key (type 'uniform) (min-size 0))
(%make-buffer-layout type min-size))
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