ref: 9eaba52cafcac7c2f3bfc72d7be1f15893196be1
dir: /external/SDL2/src/render/SDL_d3dmath.h/
/* Simple DirectMedia Layer Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution. */ #include "../SDL_internal.h" #if (SDL_VIDEO_RENDER_D3D || SDL_VIDEO_RENDER_D3D11) && !SDL_RENDER_DISABLED /* Direct3D matrix math functions */ typedef struct { float x; float y; } Float2; typedef struct { float x; float y; float z; } Float3; typedef struct { float x; float y; float z; float w; } Float4; typedef struct { union { struct { float _11, _12, _13, _14; float _21, _22, _23, _24; float _31, _32, _33, _34; float _41, _42, _43, _44; } v; float m[4][4]; }; } Float4X4; Float4X4 MatrixIdentity(); Float4X4 MatrixMultiply(Float4X4 M1, Float4X4 M2); Float4X4 MatrixScaling(float x, float y, float z); Float4X4 MatrixTranslation(float x, float y, float z); Float4X4 MatrixRotationX(float r); Float4X4 MatrixRotationY(float r); Float4X4 MatrixRotationZ(float r); #endif /* (SDL_VIDEO_RENDER_D3D || SDL_VIDEO_RENDER_D3D11) && !SDL_RENDER_DISABLED */ /* vi: set ts=4 sw=4 expandtab: */