Function ImGui_ImplDX11_CreateFontsTexture

KBotExt/imgui/imgui_impl_dx11.cpp:308–368

}

static void ImGui_ImplDX11_CreateFontsTexture()
{
	// Build texture atlas
	ImGuiIO& io = ImGui::GetIO();
	ImGui_ImplDX11_Data* bd = ImGui_ImplDX11_GetBackendData();
	unsigned char* pixels;
	int width, height;
	io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);

	// Upload texture to graphics system
	{
		D3D11_TEXTURE2D_DESC desc;
		ZeroMemory(&desc, sizeof(desc));
		desc.Width = width;
		desc.Height = height;
		desc.MipLevels = 1;
		desc.ArraySize = 1;
		desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
		desc.SampleDesc.Count = 1;
		desc.Usage = D3D11_USAGE_DEFAULT;
		desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
		desc.CPUAccessFlags = 0;

		ID3D11Texture2D* pTexture = nullptr;
		D3D11_SUBRESOURCE_DATA subResource;
		subResource.pSysMem = pixels;
		subResource.SysMemPitch = desc.Width * 4;
		subResource.SysMemSlicePitch = 0;
		bd->pd3dDevice->CreateTexture2D(&desc, &subResource, &pTexture);
		IM_ASSERT(pTexture != nullptr);

		// Create texture view
		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;
		bd->pd3dDevice->CreateShaderResourceView(pTexture, &srvDesc, &bd->pFontTextureView);
		pTexture->Release();
	}

	// Store our identifier
	io.Fonts->SetTexID((ImTextureID)bd->pFontTextureView);

	// Create texture sampler
	// (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
	{
		D3D11_SAMPLER_DESC desc;
		ZeroMemory(&desc, sizeof(desc));
		desc.Filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR;
		desc.AddressU = D3D11_TEXTURE_ADDRESS_WRAP;
		desc.AddressV = D3D11_TEXTURE_ADDRESS_WRAP;
		desc.AddressW = D3D11_TEXTURE_ADDRESS_WRAP;
		desc.MipLODBias = 0.f;
		desc.ComparisonFunc = D3D11_COMPARISON_ALWAYS;
		desc.MinLOD = 0.f;
		desc.MaxLOD = 0.f;