bool
CPluginViewD3D11::UploadTexture(
	char* pPluginName,
	char* pPictureName,
	void*& TextureHandle,
	void*& ShaderResourceView
)
{
	bool isAlpha = false;
	u32 pImageSize = 0;
	u32 pImageWidth = 0;
	u32 pImageHeight = 0;
	void* ppRawData = nullptr;

	if (!LoadImageFromFile(pPluginName, pPictureName, &ppRawData, &pImageSize, &pImageWidth, &pImageHeight, &isAlpha)) return false;
#ifdef _DEBUG
	assert(!isAlpha);
#endif

	D3D11_TEXTURE2D_DESC desc = {};
	D3D11_SUBRESOURCE_DATA initData = {};
	ID3D11Texture2D* tex = nullptr;
	desc.Width = pImageWidth;
	desc.Height = pImageHeight;
	desc.MipLevels = 1;
	desc.ArraySize = 1;
	desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
	desc.SampleDesc.Count = 1;
	desc.SampleDesc.Quality = 0;
	desc.Usage = D3D11_USAGE_DEFAULT;
	desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
	desc.CPUAccessFlags = 0;
	desc.MiscFlags = 0;

	initData.pSysMem = ppRawData;
	initData.SysMemSlicePitch = pImageSize;
	initData.SysMemPitch = pImageWidth * 4;

	if (FAILED(g_pd3dDevice->CreateTexture2D(&desc, &initData, &tex))) {
		free(ppRawData);
		return false;
	}

	D3D11_SHADER_RESOURCE_VIEW_DESC srvDesc;
	ZeroMemory(&srvDesc, sizeof(srvDesc));
	srvDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
	srvDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
	srvDesc.Texture2D.MipLevels = desc.MipLevels;
	srvDesc.Texture2D.MostDetailedMip = 0;
	g_pd3dDevice->CreateShaderResourceView(tex, &srvDesc, (ID3D11ShaderResourceView**)&ShaderResourceView);

	TextureHandle = (void*)tex;
	return true;
}

и затем
ImGui::Image((void*)(intptr_t)ShaderResourceView, ImVec2(width, heigght));

TextureHandle сохраняем для дальнейшего релиза