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-/*
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- Simple DirectMedia Layer
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- Copyright (C) 1997-2025 Sam Lantinga <[email protected]>
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-
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- This software is provided 'as-is', without any express or implied
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- warranty. In no event will the authors be held liable for any damages
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- arising from the use of this software.
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-
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- Permission is granted to anyone to use this software for any purpose,
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- including commercial applications, and to alter it and redistribute it
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- freely, subject to the following restrictions:
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-
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- 1. The origin of this software must not be misrepresented; you must not
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- claim that you wrote the original software. If you use this software
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- in a product, an acknowledgment in the product documentation would be
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- appreciated but is not required.
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- 2. Altered source versions must be plainly marked as such, and must not be
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- misrepresented as being the original software.
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- 3. This notice may not be removed or altered from any source distribution.
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-*/
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-#include "SDL_internal.h"
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-
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-#if defined(SDL_VIDEO_RENDER_D3D) || \
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- defined(SDL_VIDEO_RENDER_D3D11) || \
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- defined(SDL_VIDEO_RENDER_D3D12) || \
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- defined(SDL_VIDEO_RENDER_VULKAN)
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-
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-#include "SDL_d3dmath.h"
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-
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-// Direct3D matrix math functions
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-
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-Float4X4 MatrixIdentity(void)
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-{
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- Float4X4 m;
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- SDL_zero(m);
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- m.v._11 = 1.0f;
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- m.v._22 = 1.0f;
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- m.v._33 = 1.0f;
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- m.v._44 = 1.0f;
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- return m;
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-}
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-
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-Float4X4 MatrixMultiply(Float4X4 M1, Float4X4 M2)
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-{
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- Float4X4 m;
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- 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;
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- 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;
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- 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;
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- 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;
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- 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;
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- 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;
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- 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;
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- 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;
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- 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;
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- 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;
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- 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;
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- 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;
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- 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;
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- 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;
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- 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;
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- 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;
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- return m;
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-}
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-
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-Float4X4 MatrixScaling(float x, float y, float z)
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-{
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- Float4X4 m;
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- SDL_zero(m);
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- m.v._11 = x;
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- m.v._22 = y;
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- m.v._33 = z;
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- m.v._44 = 1.0f;
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- return m;
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-}
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-
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-Float4X4 MatrixTranslation(float x, float y, float z)
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-{
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- Float4X4 m;
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- SDL_zero(m);
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- m.v._11 = 1.0f;
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- m.v._22 = 1.0f;
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- m.v._33 = 1.0f;
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- m.v._44 = 1.0f;
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- m.v._41 = x;
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- m.v._42 = y;
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- m.v._43 = z;
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- return m;
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-}
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-
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-Float4X4 MatrixRotationX(float r)
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-{
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- float sinR = SDL_sinf(r);
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- float cosR = SDL_cosf(r);
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- Float4X4 m;
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- SDL_zero(m);
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- m.v._11 = 1.0f;
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- m.v._22 = cosR;
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- m.v._23 = sinR;
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- m.v._32 = -sinR;
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- m.v._33 = cosR;
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- m.v._44 = 1.0f;
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- return m;
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-}
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-
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-Float4X4 MatrixRotationY(float r)
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-{
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- float sinR = SDL_sinf(r);
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- float cosR = SDL_cosf(r);
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- Float4X4 m;
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- SDL_zero(m);
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- m.v._11 = cosR;
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- m.v._13 = -sinR;
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- m.v._22 = 1.0f;
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- m.v._31 = sinR;
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- m.v._33 = cosR;
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- m.v._44 = 1.0f;
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- return m;
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-}
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-
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-Float4X4 MatrixRotationZ(float r)
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-{
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- float sinR = SDL_sinf(r);
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- float cosR = SDL_cosf(r);
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- Float4X4 m;
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- SDL_zero(m);
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- m.v._11 = cosR;
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- m.v._12 = sinR;
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- m.v._21 = -sinR;
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- m.v._22 = cosR;
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- m.v._33 = 1.0f;
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- m.v._44 = 1.0f;
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- return m;
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-}
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-
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-#endif // SDL_VIDEO_RENDER_D3D || SDL_VIDEO_RENDER_D3D11 || SDL_VIDEO_RENDER_D3D12 || SDL_VIDEO_RENDER_VULKAN
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Peter0x44