The guizmo doesn't show-up in directX 11 about imguizmo HOT 31 OPEN

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Hi Khanldris, you have to call the method https://github.com/CedricGuillemet/ImGuizmo/blob/master/ImGuizmo.h#L172 to specify the view/projection and object matrices

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I am having this issue too. I've passed in the view and projection matrices from the camera as well as the matrix of where I would like the gizmo to be drawn but nothing seems to draw on the ImGuizmo side.

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It on an engine im working on, everything seems to work on the sample app provided. Excellent work on it by the way. It's very impressive! Here is the code I am calling ImGuizmo `// Start ImGui frame
ImGui_ImplDX11_NewFrame();
ImGui_ImplWin32_NewFrame();
ImGui::NewFrame();
ImGuizmo::BeginFrame();

ImGuizmo::Enable(true);
//ImGuizmo::SetRect(0, 0, (float)windowWidth, (float)windowHeight);

ImGuizmo::SetDrawlist();
float * camview = editorCamera.GetViewMatAsFloatArr();
float * camProj = editorCamera.GetProjMatAsFloatArr();
ImGuizmo::Manipulate(camview, camProj, ImGuizmo::SCALE, ImGuizmo::LOCAL, pSelectedEntity->GetTransform().GetWorldMatAsFloatArr());`

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It also in DirectX11 so the XMMATRIX need to be converted to a XMFLOAT4x4 thn to a float* to comply with the ImGuizmo::Minipulate()
`XMFLOAT4X4 temp;
XMStoreFloat4x4(&temp, GetViewMatrix());

float result[16] =
{
	temp._11, temp._21, temp._31, temp._41,
	temp._12, temp._22, temp._32, temp._42,
	temp._13, temp._23, temp._33, temp._43,
	temp._14, temp._24, temp._34, temp._44
};

return result;`

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Also tried this as well and nothing
float result[16] = { temp._11, temp._12, temp._13, temp._14, temp._21, temp._22, temp._23, temp._24, temp._31, temp._32, temp._33, temp._34, temp._41, temp._42, temp._43, temp._44 };

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Row and Column major didn't work is there something else I'm forgetting? Do I need to give the device context or anything? The first batch of code I posted was everything I have related to ImGuizmo calls.

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Still nothing

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Something must have gotten lost in the conversions?

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When I go through line by line in the array assignments the data looks good though

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I've moved all conversions to just before the ImGuizmo::Manipulate method and get this as a result. It looks like part of the translate tool but it can only be seen while the ImGui windows are over it and only at particular angles. I've also tried row major and column major forms for the camera view and projection as well as the model's world matrix

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Did some more digging and using the IsOver will return true when I hover over an object that is supposed to have a guizmo. But it is not drawing.

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It seems to be Here is an example of how I'm getting and storing them. It's done just before the Manipulate call and not in any other methods XMFLOAT4X4 camViewTemp; XMStoreFloat4x4(&camViewTemp, editorCamera.GetViewMatrix()); float camView[16] = { camViewTemp._11,camViewTemp._21, camViewTemp._31, camViewTemp._41, camViewTemp._12,camViewTemp._22, camViewTemp._32, camViewTemp._42, camViewTemp._13,camViewTemp._23, camViewTemp._33, camViewTemp._43, camViewTemp._14,camViewTemp._24, camViewTemp._34, camViewTemp._44 };

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Hi, did you ever fix this, or even find out what the issue was @GCourtney27? I'm having the same problem with a DirectX11 renderer.

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@DontBelieveMe I haven't taken a look at it in a while but I think it might have been a problem with the clear screen and draw order of ImGui and the rendering algorithm I was using. It also could have been I wasn't converting the XMMatrices to float* in the right way. I'll look at it again and get back to you.

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@DontBelieveMe I finally had a chance to look at it and got it to show up on the screen. Using this code

That will give something like this notice the translate guizmo at the bottom :D

You can grab the object and move it around the scene but if you let go he will snap back to where he started. I'm still working on that.
I believe the problem I was having was a mixture of trying to pass in the wrong matrices with the wrong data sizes and making copies of them. Eventually they just got corrupted. I think another important note was I was using the viewports with docking enabled when it wasn't working. With it enabled I think it was covering up what little guizmo was there to see (because it was stretched and morphed by the corrupted matrices). In the code I shared, viewports are off but docking is enabled. Also worth mentioning, I have rewritten my renderer with DirectX 12 so this is also a proof of concept that it works on that platform. Since no API calls are made I think it's safe to say this code will also run on DirectX 11 though I haven't tested that.

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Issue is you're using OpenGL coord system (+X right, +Y up, -Z forward).
DirectX tends to use +Z forward.
Also if I remember the clip spaces are different so the projection transforms are different.
If you have a version that works with DirectX, that'd be appreciated & would save me a job :)

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@adv-sw I have fixed it now. The problem was not using an OpenGL coordinate system it was because of how I was handling the matrices and passing them to ImGuizmo. The code posted above in the screenshot will get you up and running using the DirectX math library.

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