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Questions - directx-12

Clip Space in OpenGL and DirectX 12

I am implementing a custom mathematics library to create model, view and projection matrices in OpenGL and DirectX. I am doing this, to improve my understanding in the mathematics behind 3D applicatio...
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Erik So

c++

math

matrix

opengl

directx-12

Votes: 0

Answers: 1

Latest Answer

However, in OpenGL the scene renders correctly no matter if I use a projection matrix for clipping between -1.0 and 1.0 or 0.0 and 1.0. In DirectX only the projection matrix for clipping between 0.0 ...
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user16978892

dx12) Shader Constants goes wrong

As you can see, in PIX, Pipeline says there's right values on GPU, but when I debug Pixels, it uses wrong values without gZSplits[0]. And I Upload Values to GPU like this, and mZSplits is std::vecto...
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Shark_Bladder

c++

shader

hlsl

directx-12

Votes: 0

Answers: 1

Latest Answer

As per the packing rules for arrays in constant buffers : cbuffer ShadowCB : register(b5) { float gZSplits[3] : packoffset(c0); } Is not 3 floats (size 12 bytes), so the representation is not cbu...
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mrvux

model dont have tangent or binormal value fbxsdk directx

I'm using a translator, so please understand that I may be inexperienced. I'm currently trying to create a 3d model in dx12 using fbxsdk. There is no problem with the modeling used in the current exam...
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이동수

c++

directx-11

fbx

3d-modelling

directx-12

Votes: 0

Answers: 2

Latest Answer

If your run-time scenario requires tangents/binormals to operate, then you need to handle the case of them not already being defined in the FBX. If the iBinormalCnt is 0, then you can generate tangent...
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Chuck Walbourn

GPU Memory Management in OpenGL and DirectX 12

I am currently improving my knowledge in OpenGL and DirectX 12 in order to create graphics applications with both APIs. I studied several tutorials but I still do not completely understand, how the me...
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Erik So

c++

opengl

memory

gpu

directx-12

Votes: 0

Answers: 1

Latest Answer

For DirectX 12, it uses the same lifetime model as previous versions of Direct3D: The object is kept alive until the reference count hits 0. It's then eligible for destruction. The exact time of clean...
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Chuck Walbourn

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