directxmath

16 byte alignment issue

由 馋奶兔 提交于 2019-12-11 13:53:58
问题 I am using DirectXMath , creating XMMatrix and XMVector in classes. When I call XMMatrixMultiply it throws unhandled exception on it. I have found online that it is an issue with byte alligment, since DirectXMath uses SIMD instructions set which results in missaligned heap allocation. One of the proposed solution was to use XMFLOAT4X4 variables and then change them to temporary XMMatrix whenever needed, but it isn't the nicest and fastest solution imo. Another one was to use _aligned_malloc ,

DirectXTK spriteFont in 3D space

由 北城余情 提交于 2019-12-11 08:29:40
问题 I was hoping to display an "X" at (50,0,0) using DirectXTK and following an article about billboarding. however i do not seem to have it correct. Could somebody help me out. XMVECTOR textPosition = XMVectorSet(50, 0, 0, 0); unique_ptr<BasicEffect> basicEffect(new BasicEffect(m_pd3dDevice)); unique_ptr<CommonStates> commonStates(new CommonStates(m_pd3dDevice)); /*basicEffect->SetWorld(XMMatrixScaling(1,-1, 1) * XMMatrixTranslationFromVector(textPosition));*/ /* basicEffect->SetWorld(

DirectX::XMMATRIX error C2719: __declspec(align('16')) won't be aligned

由 我与影子孤独终老i 提交于 2019-12-08 02:04:01
问题 Ok so im working on my own DirectX framework all tutorials about making a DirectX framework are old and use deprecated stuff so i just made my own one , though i took somethings from the old tutorials and updated them to work with the new Windows 8.1 SDK and here comes The problem , i get errors with XMMATRIX the original code uses D3DXMATRIX (33): error C2719: 'unnamed-parameter': formal parameter with __declspec(align('16')) won't be aligned (40): error C2719: 'unnamed-parameter': formal

Using XMVECTOR from DirectXMath as a class member causes a crash only in Release Mode?

由 心已入冬 提交于 2019-12-01 10:41:16
I've been trying to use XMVECTOR as a class member for a bounding box, since I do a lot of calculations, but I use the XMFLOAT3 only once per frame, so the bounding box has a method that gives me it's center in a XMFLOAT3, otherwise it stays in a XMVECTOR;The class is delcared with __declspec(align(16)) and works in debug mode.However in Release mode it crashes the instant I set it to something: Box& Box::operator=(const Box& box) { _center = box._center; _extents = box._extents; return *this; } Whenever I do: Box A; Box B; A = B; It crashes, giving me 0xC0000005: Access violation reading

Using XMVECTOR from DirectXMath as a class member causes a crash only in Release Mode?

由 馋奶兔 提交于 2019-12-01 09:35:58
问题 I've been trying to use XMVECTOR as a class member for a bounding box, since I do a lot of calculations, but I use the XMFLOAT3 only once per frame, so the bounding box has a method that gives me it's center in a XMFLOAT3, otherwise it stays in a XMVECTOR;The class is delcared with __declspec(align(16)) and works in debug mode.However in Release mode it crashes the instant I set it to something: Box& Box::operator=(const Box& box) { _center = box._center; _extents = box._extents; return *this
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