/* * Copyright (C) Oscar Shrimpton 2020 * * This program is free software: you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation, either version 3 of the License, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along * with this program. If not, see . */ use crate::{draw::buffer::StagedBuffer, error::CreationError, types::*}; use hal::buffer::Usage; use std::mem::ManuallyDrop; use stockton_types::{Vector2, Vector3}; /// Represents a point of a triangle, including UV and texture information. #[derive(Debug, Clone, Copy)] pub struct UVPoint(pub Vector3, pub i32, pub Vector2); /// Initial size of vertex buffer. TODO: Way of overriding this pub const INITIAL_VERT_SIZE: u64 = 3 * 3000; /// Initial size of index buffer. TODO: Way of overriding this pub const INITIAL_INDEX_SIZE: u64 = 3000; /// The buffers used for drawing, ie index and vertex buffer pub struct DrawBuffers<'a, T: Sized> { pub vertex_buffer: ManuallyDrop>, pub index_buffer: ManuallyDrop>, } impl<'a, T> DrawBuffers<'a, T> { pub fn new(device: &mut Device, adapter: &Adapter) -> Result, CreationError> { let vert = StagedBuffer::new(device, &adapter, Usage::VERTEX, INITIAL_VERT_SIZE)?; let index = StagedBuffer::new(device, &adapter, Usage::INDEX, INITIAL_INDEX_SIZE)?; Ok(DrawBuffers { vertex_buffer: ManuallyDrop::new(vert), index_buffer: ManuallyDrop::new(index), }) } pub fn deactivate(self, device: &mut Device) { unsafe { use core::ptr::read; ManuallyDrop::into_inner(read(&self.vertex_buffer)).deactivate(device); ManuallyDrop::into_inner(read(&self.index_buffer)).deactivate(device); } } }