1 /*
2   Simple DirectMedia Layer
3   Copyright (C) 1997-2020 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 (SDL_VIDEO_RENDER_D3D || SDL_VIDEO_RENDER_D3D11) && !SDL_RENDER_DISABLED
24 
25 /* Direct3D matrix math functions */
26 
27 typedef struct
28 {
29     float x;
30     float y;
31 } Float2;
32 
33 typedef struct
34 {
35     float x;
36     float y;
37     float z;
38 } Float3;
39 
40 typedef struct
41 {
42     float x;
43     float y;
44     float z;
45     float w;
46 } Float4;
47 
48 typedef struct
49 {
50     union {
51         struct {
52             float _11, _12, _13, _14;
53             float _21, _22, _23, _24;
54             float _31, _32, _33, _34;
55             float _41, _42, _43, _44;
56         } v;
57         float m[4][4];
58     };
59 } Float4X4;
60 
61 
62 Float4X4 MatrixIdentity();
63 Float4X4 MatrixMultiply(Float4X4 M1, Float4X4 M2);
64 Float4X4 MatrixScaling(float x, float y, float z);
65 Float4X4 MatrixTranslation(float x, float y, float z);
66 Float4X4 MatrixRotationX(float r);
67 Float4X4 MatrixRotationY(float r);
68 Float4X4 MatrixRotationZ(float r);
69 
70 #endif /* (SDL_VIDEO_RENDER_D3D || SDL_VIDEO_RENDER_D3D11) && !SDL_RENDER_DISABLED */
71 
72 /* vi: set ts=4 sw=4 expandtab: */
73