diff options
Diffstat (limited to '3rdparty/SDL2/src/render/SDL_d3dmath.c')
-rw-r--r-- | 3rdparty/SDL2/src/render/SDL_d3dmath.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/3rdparty/SDL2/src/render/SDL_d3dmath.c b/3rdparty/SDL2/src/render/SDL_d3dmath.c new file mode 100644 index 00000000000..83d67bfa703 --- /dev/null +++ b/3rdparty/SDL2/src/render/SDL_d3dmath.c @@ -0,0 +1,136 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2016 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 +#include "SDL_stdinc.h" + +#include "SDL_d3dmath.h" + +/* Direct3D matrix math functions */ + +Float4X4 MatrixIdentity() +{ + Float4X4 m; + SDL_zero(m); + m._11 = 1.0f; + m._22 = 1.0f; + m._33 = 1.0f; + m._44 = 1.0f; + return m; +} + +Float4X4 MatrixMultiply(Float4X4 M1, Float4X4 M2) +{ + Float4X4 m; + m._11 = M1._11 * M2._11 + M1._12 * M2._21 + M1._13 * M2._31 + M1._14 * M2._41; + m._12 = M1._11 * M2._12 + M1._12 * M2._22 + M1._13 * M2._32 + M1._14 * M2._42; + m._13 = M1._11 * M2._13 + M1._12 * M2._23 + M1._13 * M2._33 + M1._14 * M2._43; + m._14 = M1._11 * M2._14 + M1._12 * M2._24 + M1._13 * M2._34 + M1._14 * M2._44; + m._21 = M1._21 * M2._11 + M1._22 * M2._21 + M1._23 * M2._31 + M1._24 * M2._41; + m._22 = M1._21 * M2._12 + M1._22 * M2._22 + M1._23 * M2._32 + M1._24 * M2._42; + m._23 = M1._21 * M2._13 + M1._22 * M2._23 + M1._23 * M2._33 + M1._24 * M2._43; + m._24 = M1._21 * M2._14 + M1._22 * M2._24 + M1._23 * M2._34 + M1._24 * M2._44; + m._31 = M1._31 * M2._11 + M1._32 * M2._21 + M1._33 * M2._31 + M1._34 * M2._41; + m._32 = M1._31 * M2._12 + M1._32 * M2._22 + M1._33 * M2._32 + M1._34 * M2._42; + m._33 = M1._31 * M2._13 + M1._32 * M2._23 + M1._33 * M2._33 + M1._34 * M2._43; + m._34 = M1._31 * M2._14 + M1._32 * M2._24 + M1._33 * M2._34 + M1._34 * M2._44; + m._41 = M1._41 * M2._11 + M1._42 * M2._21 + M1._43 * M2._31 + M1._44 * M2._41; + m._42 = M1._41 * M2._12 + M1._42 * M2._22 + M1._43 * M2._32 + M1._44 * M2._42; + m._43 = M1._41 * M2._13 + M1._42 * M2._23 + M1._43 * M2._33 + M1._44 * M2._43; + m._44 = M1._41 * M2._14 + M1._42 * M2._24 + M1._43 * M2._34 + M1._44 * M2._44; + return m; +} + +Float4X4 MatrixScaling(float x, float y, float z) +{ + Float4X4 m; + SDL_zero(m); + m._11 = x; + m._22 = y; + m._33 = z; + m._44 = 1.0f; + return m; +} + +Float4X4 MatrixTranslation(float x, float y, float z) +{ + Float4X4 m; + SDL_zero(m); + m._11 = 1.0f; + m._22 = 1.0f; + m._33 = 1.0f; + m._44 = 1.0f; + m._41 = x; + m._42 = y; + m._43 = z; + return m; +} + +Float4X4 MatrixRotationX(float r) +{ + float sinR = SDL_sinf(r); + float cosR = SDL_cosf(r); + Float4X4 m; + SDL_zero(m); + m._11 = 1.0f; + m._22 = cosR; + m._23 = sinR; + m._32 = -sinR; + m._33 = cosR; + m._44 = 1.0f; + return m; +} + +Float4X4 MatrixRotationY(float r) +{ + float sinR = SDL_sinf(r); + float cosR = SDL_cosf(r); + Float4X4 m; + SDL_zero(m); + m._11 = cosR; + m._13 = -sinR; + m._22 = 1.0f; + m._31 = sinR; + m._33 = cosR; + m._44 = 1.0f; + return m; +} + +Float4X4 MatrixRotationZ(float r) +{ + float sinR = SDL_sinf(r); + float cosR = SDL_cosf(r); + Float4X4 m; + SDL_zero(m); + m._11 = cosR; + m._12 = sinR; + m._21 = -sinR; + m._22 = cosR; + m._33 = 1.0f; + m._44 = 1.0f; + return m; + +} + +#endif /* (SDL_VIDEO_RENDER_D3D || SDL_VIDEO_RENDER_D3D11) && !SDL_RENDER_DISABLED */ + +/* vi: set ts=4 sw=4 expandtab: */ |