From 5a079a2d114f96d4847d1ee305d5b7c16eeec50e Mon Sep 17 00:00:00 2001 From: 3gg <3gg@shellblade.net> Date: Sat, 27 Dec 2025 12:03:39 -0800 Subject: Initial commit --- contrib/SDL-3.2.8/src/render/SDL_d3dmath.c | 135 +++++++++++++++++++++++++++++ 1 file changed, 135 insertions(+) create mode 100644 contrib/SDL-3.2.8/src/render/SDL_d3dmath.c (limited to 'contrib/SDL-3.2.8/src/render/SDL_d3dmath.c') diff --git a/contrib/SDL-3.2.8/src/render/SDL_d3dmath.c b/contrib/SDL-3.2.8/src/render/SDL_d3dmath.c new file mode 100644 index 0000000..6a1ab59 --- /dev/null +++ b/contrib/SDL-3.2.8/src/render/SDL_d3dmath.c @@ -0,0 +1,135 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2025 Sam Lantinga + + 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 defined(SDL_VIDEO_RENDER_D3D) || \ + defined(SDL_VIDEO_RENDER_D3D11) || \ + defined(SDL_VIDEO_RENDER_D3D12) || \ + defined(SDL_VIDEO_RENDER_VULKAN) + +#include "SDL_d3dmath.h" + +// Direct3D matrix math functions + +Float4X4 MatrixIdentity(void) +{ + Float4X4 m; + SDL_zero(m); + m.v._11 = 1.0f; + m.v._22 = 1.0f; + m.v._33 = 1.0f; + m.v._44 = 1.0f; + return m; +} + +Float4X4 MatrixMultiply(Float4X4 M1, Float4X4 M2) +{ + Float4X4 m; + m.v._11 = M1.v._11 * M2.v._11 + M1.v._12 * M2.v._21 + M1.v._13 * M2.v._31 + M1.v._14 * M2.v._41; + m.v._12 = M1.v._11 * M2.v._12 + M1.v._12 * M2.v._22 + M1.v._13 * M2.v._32 + M1.v._14 * M2.v._42; + m.v._13 = M1.v._11 * M2.v._13 + M1.v._12 * M2.v._23 + M1.v._13 * M2.v._33 + M1.v._14 * M2.v._43; + m.v._14 = M1.v._11 * M2.v._14 + M1.v._12 * M2.v._24 + M1.v._13 * M2.v._34 + M1.v._14 * M2.v._44; + m.v._21 = M1.v._21 * M2.v._11 + M1.v._22 * M2.v._21 + M1.v._23 * M2.v._31 + M1.v._24 * M2.v._41; + m.v._22 = M1.v._21 * M2.v._12 + M1.v._22 * M2.v._22 + M1.v._23 * M2.v._32 + M1.v._24 * M2.v._42; + m.v._23 = M1.v._21 * M2.v._13 + M1.v._22 * M2.v._23 + M1.v._23 * M2.v._33 + M1.v._24 * M2.v._43; + m.v._24 = M1.v._21 * M2.v._14 + M1.v._22 * M2.v._24 + M1.v._23 * M2.v._34 + M1.v._24 * M2.v._44; + m.v._31 = M1.v._31 * M2.v._11 + M1.v._32 * M2.v._21 + M1.v._33 * M2.v._31 + M1.v._34 * M2.v._41; + m.v._32 = M1.v._31 * M2.v._12 + M1.v._32 * M2.v._22 + M1.v._33 * M2.v._32 + M1.v._34 * M2.v._42; + m.v._33 = M1.v._31 * M2.v._13 + M1.v._32 * M2.v._23 + M1.v._33 * M2.v._33 + M1.v._34 * M2.v._43; + m.v._34 = M1.v._31 * M2.v._14 + M1.v._32 * M2.v._24 + M1.v._33 * M2.v._34 + M1.v._34 * M2.v._44; + m.v._41 = M1.v._41 * M2.v._11 + M1.v._42 * M2.v._21 + M1.v._43 * M2.v._31 + M1.v._44 * M2.v._41; + m.v._42 = M1.v._41 * M2.v._12 + M1.v._42 * M2.v._22 + M1.v._43 * M2.v._32 + M1.v._44 * M2.v._42; + m.v._43 = M1.v._41 * M2.v._13 + M1.v._42 * M2.v._23 + M1.v._43 * M2.v._33 + M1.v._44 * M2.v._43; + m.v._44 = M1.v._41 * M2.v._14 + M1.v._42 * M2.v._24 + M1.v._43 * M2.v._34 + M1.v._44 * M2.v._44; + return m; +} + +Float4X4 MatrixScaling(float x, float y, float z) +{ + Float4X4 m; + SDL_zero(m); + m.v._11 = x; + m.v._22 = y; + m.v._33 = z; + m.v._44 = 1.0f; + return m; +} + +Float4X4 MatrixTranslation(float x, float y, float z) +{ + Float4X4 m; + SDL_zero(m); + m.v._11 = 1.0f; + m.v._22 = 1.0f; + m.v._33 = 1.0f; + m.v._44 = 1.0f; + m.v._41 = x; + m.v._42 = y; + m.v._43 = z; + return m; +} + +Float4X4 MatrixRotationX(float r) +{ + float sinR = SDL_sinf(r); + float cosR = SDL_cosf(r); + Float4X4 m; + SDL_zero(m); + m.v._11 = 1.0f; + m.v._22 = cosR; + m.v._23 = sinR; + m.v._32 = -sinR; + m.v._33 = cosR; + m.v._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.v._11 = cosR; + m.v._13 = -sinR; + m.v._22 = 1.0f; + m.v._31 = sinR; + m.v._33 = cosR; + m.v._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.v._11 = cosR; + m.v._12 = sinR; + m.v._21 = -sinR; + m.v._22 = cosR; + m.v._33 = 1.0f; + m.v._44 = 1.0f; + return m; +} + +#endif // SDL_VIDEO_RENDER_D3D || SDL_VIDEO_RENDER_D3D11 || SDL_VIDEO_RENDER_D3D12 || SDL_VIDEO_RENDER_VULKAN -- cgit v1.2.3