Add library SDL2

2026-07-13 07:34:45 +00:00 · 2015-01-18 21:05:38 +01:00 · 2015-01-18 21:05:38 +01:00 · 674133ac86
commit 674133ac86
parent 33a0579735
767 changed files with 295058 additions and 10 deletions
--- a/Engine/lib/sdl/src/render/SDL_d3dmath.c
+++ b/Engine/lib/sdl/src/render/SDL_d3dmath.c
@ -0,0 +1,131 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2014 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"
+#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;
+}
+
+/* vi: set ts=4 sw=4 expandtab: */