1/**
2 * Copyright (c) 2006-2023 LOVE Development Team
3 *
4 * This software is provided 'as-is', without any express or implied
5 * warranty. In no event will the authors be held liable for any damages
6 * arising from the use of this software.
7 *
8 * Permission is granted to anyone to use this software for any purpose,
9 * including commercial applications, and to alter it and redistribute it
10 * freely, subject to the following restrictions:
11 *
12 * 1. The origin of this software must not be misrepresented; you must not
13 * claim that you wrote the original software. If you use this software
14 * in a product, an acknowledgment in the product documentation would be
15 * appreciated but is not required.
16 * 2. Altered source versions must be plainly marked as such, and must not be
17 * misrepresented as being the original software.
18 * 3. This notice may not be removed or altered from any source distribution.
19 **/
20
21#pragma once
22
23// LOVE
24#include "common/config.h"
25#include "graphics/Buffer.h"
26#include "graphics/Volatile.h"
27
28// OpenGL
29#include "OpenGL.h"
30
31namespace love
32{
33namespace graphics
34{
35namespace opengl
36{
37
38class Buffer final : public love::graphics::Buffer, public Volatile
39{
40public:
41
42 Buffer(size_t size, const void *data, BufferType type, vertex::Usage usage, uint32 mapflags);
43 virtual ~Buffer();
44
45 void *map() override;
46 void unmap() override;
47 void setMappedRangeModified(size_t offset, size_t size) override;
48 void fill(size_t offset, size_t size, const void *data) override;
49 ptrdiff_t getHandle() const override;
50
51 void copyTo(size_t offset, size_t size, love::graphics::Buffer *other, size_t otheroffset) override;
52
53 // Implements Volatile.
54 bool loadVolatile() override;
55 void unloadVolatile() override;
56
57private:
58
59 bool load(bool restore);
60 void unload();
61
62 void unmapStatic(size_t offset, size_t size);
63 void unmapStream();
64
65 GLenum target;
66
67 // The VBO identifier. Assigned by OpenGL.
68 GLuint vbo;
69
70 // A pointer to mapped memory.
71 char *memory_map;
72
73 size_t modified_start;
74 size_t modified_end;
75
76}; // Buffer
77
78} // opengl
79} // graphics
80} // love
81