1/*
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
4
5 This software is provided 'as-is', without any express or implied
6 warranty. In no event will the authors be held liable for any damages
7 arising from the use of this software.
8
9 Permission is granted to anyone to use this software for any purpose,
10 including commercial applications, and to alter it and redistribute it
11 freely, subject to the following restrictions:
12
13 1. The origin of this software must not be misrepresented; you must not
14 claim that you wrote the original software. If you use this software
15 in a product, an acknowledgment in the product documentation would be
16 appreciated but is not required.
17 2. Altered source versions must be plainly marked as such, and must not be
18 misrepresented as being the original software.
19 3. This notice may not be removed or altered from any source distribution.
20*/
21#include "SDL_internal.h"
22
23#if defined(SDL_VIDEO_RENDER_D3D) || \
24 defined(SDL_VIDEO_RENDER_D3D11) || \
25 defined(SDL_VIDEO_RENDER_D3D12) || \
26 defined(SDL_VIDEO_RENDER_GPU) || \
27 defined(SDL_VIDEO_RENDER_VULKAN)
28
29// Set up for C function definitions, even when using C++
30#ifdef __cplusplus
31extern "C" {
32#endif
33
34// Direct3D matrix math functions
35
36typedef struct
37{
38 float x;
39 float y;
40} Float2;
41
42typedef struct
43{
44 float x;
45 float y;
46 float z;
47} Float3;
48
49typedef struct
50{
51 float x;
52 float y;
53 float z;
54 float w;
55} Float4;
56
57typedef struct
58{
59 union
60 {
61 struct
62 {
63 float _11, _12, _13, _14;
64 float _21, _22, _23, _24;
65 float _31, _32, _33, _34;
66 float _41, _42, _43, _44;
67 } v;
68 float m[4][4];
69 };
70} Float4X4;
71
72extern Float4X4 MatrixIdentity(void);
73extern Float4X4 MatrixMultiply(Float4X4 M1, Float4X4 M2);
74extern Float4X4 MatrixScaling(float x, float y, float z);
75extern Float4X4 MatrixTranslation(float x, float y, float z);
76extern Float4X4 MatrixRotationX(float r);
77extern Float4X4 MatrixRotationY(float r);
78extern Float4X4 MatrixRotationZ(float r);
79
80// Ends C function definitions when using C++
81#ifdef __cplusplus
82}
83#endif
84
85#endif // SDL_VIDEO_RENDER_D3D || SDL_VIDEO_RENDER_D3D11 || SDL_VIDEO_RENDER_D3D12 || SDL_VIDEO_RENDER_VULKAN
86