1 files changed, 85 insertions, 0 deletions

diff --git a/contrib/SDL-3.2.8/src/render/SDL_d3dmath.h b/contrib/SDL-3.2.8/src/render/SDL_d3dmath.h
new file mode 100644
index 0000000..84cff9e
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/render/SDL_d3dmath.h
@@ -0,0 +1,85 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 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 defined(SDL_VIDEO_RENDER_D3D) || \
+    defined(SDL_VIDEO_RENDER_D3D11) || \
+    defined(SDL_VIDEO_RENDER_D3D12) || \
+    defined(SDL_VIDEO_RENDER_GPU) || \
+    defined(SDL_VIDEO_RENDER_VULKAN)
+
+// Set up for C function definitions, even when using C++
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// 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;
+
+extern Float4X4 MatrixIdentity(void);
+extern Float4X4 MatrixMultiply(Float4X4 M1, Float4X4 M2);
+extern Float4X4 MatrixScaling(float x, float y, float z);
+extern Float4X4 MatrixTranslation(float x, float y, float z);
+extern Float4X4 MatrixRotationX(float r);
+extern Float4X4 MatrixRotationY(float r);
+extern Float4X4 MatrixRotationZ(float r);
+
+// Ends C function definitions when using C++
+#ifdef __cplusplus
+}
+#endif
+
+#endif // SDL_VIDEO_RENDER_D3D || SDL_VIDEO_RENDER_D3D11 || SDL_VIDEO_RENDER_D3D12 || SDL_VIDEO_RENDER_VULKAN