Improved CPU usage drastically.

Switched to directx9.
Reduced RAM usage by only remapping modules from a blacklist.

6 files changed, 337 insertions, 641 deletions

diff --git a/client/src/ui/imgui/imgui_impl_dx11.cpp b/client/src/ui/imgui/imgui_impl_dx11.cpp
deleted file mode 100644
index 0f4a861..0000000
--- a/client/src/ui/imgui/imgui_impl_dx11.cpp
+++ /dev/null
@@ -1,551 +0,0 @@
-// dear imgui: Renderer for DirectX11
-// This needs to be used along with a Platform Binding (e.g. Win32)
-
-// Implemented features:
-//  [X] Renderer: User texture binding. Use 'ID3D11ShaderResourceView*' as ImTextureID. Read the FAQ about ImTextureID!
-//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
-
-// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
-// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp
-// https://github.com/ocornut/imgui
-
-// CHANGELOG
-// (minor and older changes stripped away, please see git history for details)
-//  2019-08-01: DirectX11: Fixed code querying the Geometry Shader state (would generally error with Debug layer enabled).
-//  2019-07-21: DirectX11: Backup, clear and restore Geometry Shader is any is bound when calling ImGui_ImplDX10_RenderDrawData. Clearing Hull/Domain/Compute shaders without backup/restore.
-//  2019-05-29: DirectX11: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
-//  2019-04-30: DirectX11: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
-//  2018-12-03: Misc: Added #pragma comment statement to automatically link with d3dcompiler.lib when using D3DCompile().
-//  2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
-//  2018-08-01: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility.
-//  2018-07-13: DirectX11: Fixed unreleased resources in Init and Shutdown functions.
-//  2018-06-08: Misc: Extracted imgui_impl_dx11.cpp/.h away from the old combined DX11+Win32 example.
-//  2018-06-08: DirectX11: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle.
-//  2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplDX11_RenderDrawData() in the .h file so you can call it yourself.
-//  2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
-//  2016-05-07: DirectX11: Disabling depth-write.
-
-#include "imgui.h"
-#include "imgui_impl_dx11.h"
-
-// DirectX
-#include <stdio.h>
-#include <d3d11.h>
-#include <d3dcompiler.h>
-#ifdef _MSC_VER
-#pragma comment(lib, "d3dcompiler") // Automatically link with d3dcompiler.lib as we are using D3DCompile() below.
-#endif
-
-// DirectX data
-static ID3D11Device*            g_pd3dDevice = NULL;
-static ID3D11DeviceContext*     g_pd3dDeviceContext = NULL;
-static IDXGIFactory*            g_pFactory = NULL;
-static ID3D11Buffer*            g_pVB = NULL;
-static ID3D11Buffer*            g_pIB = NULL;
-static ID3D11VertexShader*      g_pVertexShader = NULL;
-static ID3D11InputLayout*       g_pInputLayout = NULL;
-static ID3D11Buffer*            g_pVertexConstantBuffer = NULL;
-static ID3D11PixelShader*       g_pPixelShader = NULL;
-static ID3D11SamplerState*      g_pFontSampler = NULL;
-static ID3D11ShaderResourceView*g_pFontTextureView = NULL;
-static ID3D11RasterizerState*   g_pRasterizerState = NULL;
-static ID3D11BlendState*        g_pBlendState = NULL;
-static ID3D11DepthStencilState* g_pDepthStencilState = NULL;
-static int                      g_VertexBufferSize = 5000, g_IndexBufferSize = 10000;
-
-struct VERTEX_CONSTANT_BUFFER
-{
-    float   mvp[4][4];
-};
-
-static void ImGui_ImplDX11_SetupRenderState(ImDrawData* draw_data, ID3D11DeviceContext* ctx)
-{
-    // Setup viewport
-    D3D11_VIEWPORT vp;
-    memset(&vp, 0, sizeof(D3D11_VIEWPORT));
-    vp.Width = draw_data->DisplaySize.x;
-    vp.Height = draw_data->DisplaySize.y;
-    vp.MinDepth = 0.0f;
-    vp.MaxDepth = 1.0f;
-    vp.TopLeftX = vp.TopLeftY = 0;
-    ctx->RSSetViewports(1, &vp);
-
-    // Setup shader and vertex buffers
-    unsigned int stride = sizeof(ImDrawVert);
-    unsigned int offset = 0;
-    ctx->IASetInputLayout(g_pInputLayout);
-    ctx->IASetVertexBuffers(0, 1, &g_pVB, &stride, &offset);
-    ctx->IASetIndexBuffer(g_pIB, sizeof(ImDrawIdx) == 2 ? DXGI_FORMAT_R16_UINT : DXGI_FORMAT_R32_UINT, 0);
-    ctx->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
-    ctx->VSSetShader(g_pVertexShader, NULL, 0);
-    ctx->VSSetConstantBuffers(0, 1, &g_pVertexConstantBuffer);
-    ctx->PSSetShader(g_pPixelShader, NULL, 0);
-    ctx->PSSetSamplers(0, 1, &g_pFontSampler);
-    ctx->GSSetShader(NULL, NULL, 0);
-    ctx->HSSetShader(NULL, NULL, 0); // In theory we should backup and restore this as well.. very infrequently used..
-    ctx->DSSetShader(NULL, NULL, 0); // In theory we should backup and restore this as well.. very infrequently used..
-    ctx->CSSetShader(NULL, NULL, 0); // In theory we should backup and restore this as well.. very infrequently used..
-
-    // Setup blend state
-    const float blend_factor[4] = { 0.f, 0.f, 0.f, 0.f };
-    ctx->OMSetBlendState(g_pBlendState, blend_factor, 0xffffffff);
-    ctx->OMSetDepthStencilState(g_pDepthStencilState, 0);
-    ctx->RSSetState(g_pRasterizerState);
-}
-
-// Render function
-// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
-void ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data)
-{
-    // Avoid rendering when minimized
-    if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
-        return;
-
-    ID3D11DeviceContext* ctx = g_pd3dDeviceContext;
-
-    // Create and grow vertex/index buffers if needed
-    if (!g_pVB || g_VertexBufferSize < draw_data->TotalVtxCount)
-    {
-        if (g_pVB) { g_pVB->Release(); g_pVB = NULL; }
-        g_VertexBufferSize = draw_data->TotalVtxCount + 5000;
-        D3D11_BUFFER_DESC desc;
-        memset(&desc, 0, sizeof(D3D11_BUFFER_DESC));
-        desc.Usage = D3D11_USAGE_DYNAMIC;
-        desc.ByteWidth = g_VertexBufferSize * sizeof(ImDrawVert);
-        desc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
-        desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
-        desc.MiscFlags = 0;
-        if (g_pd3dDevice->CreateBuffer(&desc, NULL, &g_pVB) < 0)
-            return;
-    }
-    if (!g_pIB || g_IndexBufferSize < draw_data->TotalIdxCount)
-    {
-        if (g_pIB) { g_pIB->Release(); g_pIB = NULL; }
-        g_IndexBufferSize = draw_data->TotalIdxCount + 10000;
-        D3D11_BUFFER_DESC desc;
-        memset(&desc, 0, sizeof(D3D11_BUFFER_DESC));
-        desc.Usage = D3D11_USAGE_DYNAMIC;
-        desc.ByteWidth = g_IndexBufferSize * sizeof(ImDrawIdx);
-        desc.BindFlags = D3D11_BIND_INDEX_BUFFER;
-        desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
-        if (g_pd3dDevice->CreateBuffer(&desc, NULL, &g_pIB) < 0)
-            return;
-    }
-
-    // Upload vertex/index data into a single contiguous GPU buffer
-    D3D11_MAPPED_SUBRESOURCE vtx_resource, idx_resource;
-    if (ctx->Map(g_pVB, 0, D3D11_MAP_WRITE_DISCARD, 0, &vtx_resource) != S_OK)
-        return;
-    if (ctx->Map(g_pIB, 0, D3D11_MAP_WRITE_DISCARD, 0, &idx_resource) != S_OK)
-        return;
-    ImDrawVert* vtx_dst = (ImDrawVert*)vtx_resource.pData;
-    ImDrawIdx* idx_dst = (ImDrawIdx*)idx_resource.pData;
-    for (int n = 0; n < draw_data->CmdListsCount; n++)
-    {
-        const ImDrawList* cmd_list = draw_data->CmdLists[n];
-        memcpy(vtx_dst, cmd_list->VtxBuffer.Data, cmd_list->VtxBuffer.Size * sizeof(ImDrawVert));
-        memcpy(idx_dst, cmd_list->IdxBuffer.Data, cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx));
-        vtx_dst += cmd_list->VtxBuffer.Size;
-        idx_dst += cmd_list->IdxBuffer.Size;
-    }
-    ctx->Unmap(g_pVB, 0);
-    ctx->Unmap(g_pIB, 0);
-
-    // Setup orthographic projection matrix into our constant buffer
-    // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
-    {
-        D3D11_MAPPED_SUBRESOURCE mapped_resource;
-        if (ctx->Map(g_pVertexConstantBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mapped_resource) != S_OK)
-            return;
-        VERTEX_CONSTANT_BUFFER* constant_buffer = (VERTEX_CONSTANT_BUFFER*)mapped_resource.pData;
-        float L = draw_data->DisplayPos.x;
-        float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x;
-        float T = draw_data->DisplayPos.y;
-        float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y;
-        float mvp[4][4] =
-        {
-            { 2.0f/(R-L),   0.0f,           0.0f,       0.0f },
-            { 0.0f,         2.0f/(T-B),     0.0f,       0.0f },
-            { 0.0f,         0.0f,           0.5f,       0.0f },
-            { (R+L)/(L-R),  (T+B)/(B-T),    0.5f,       1.0f },
-        };
-        memcpy(&constant_buffer->mvp, mvp, sizeof(mvp));
-        ctx->Unmap(g_pVertexConstantBuffer, 0);
-    }
-
-    // Backup DX state that will be modified to restore it afterwards (unfortunately this is very ugly looking and verbose. Close your eyes!)
-    struct BACKUP_DX11_STATE
-    {
-        UINT                        ScissorRectsCount, ViewportsCount;
-        D3D11_RECT                  ScissorRects[D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE];
-        D3D11_VIEWPORT              Viewports[D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE];
-        ID3D11RasterizerState*      RS;
-        ID3D11BlendState*           BlendState;
-        FLOAT                       BlendFactor[4];
-        UINT                        SampleMask;
-        UINT                        StencilRef;
-        ID3D11DepthStencilState*    DepthStencilState;
-        ID3D11ShaderResourceView*   PSShaderResource;
-        ID3D11SamplerState*         PSSampler;
-        ID3D11PixelShader*          PS;
-        ID3D11VertexShader*         VS;
-        ID3D11GeometryShader*       GS;
-        UINT                        PSInstancesCount, VSInstancesCount, GSInstancesCount;
-        ID3D11ClassInstance         *PSInstances[256], *VSInstances[256], *GSInstances[256];   // 256 is max according to PSSetShader documentation
-        D3D11_PRIMITIVE_TOPOLOGY    PrimitiveTopology;
-        ID3D11Buffer*               IndexBuffer, *VertexBuffer, *VSConstantBuffer;
-        UINT                        IndexBufferOffset, VertexBufferStride, VertexBufferOffset;
-        DXGI_FORMAT                 IndexBufferFormat;
-        ID3D11InputLayout*          InputLayout;
-    };
-    BACKUP_DX11_STATE old;
-    old.ScissorRectsCount = old.ViewportsCount = D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE;
-    ctx->RSGetScissorRects(&old.ScissorRectsCount, old.ScissorRects);
-    ctx->RSGetViewports(&old.ViewportsCount, old.Viewports);
-    ctx->RSGetState(&old.RS);
-    ctx->OMGetBlendState(&old.BlendState, old.BlendFactor, &old.SampleMask);
-    ctx->OMGetDepthStencilState(&old.DepthStencilState, &old.StencilRef);
-    ctx->PSGetShaderResources(0, 1, &old.PSShaderResource);
-    ctx->PSGetSamplers(0, 1, &old.PSSampler);
-    old.PSInstancesCount = old.VSInstancesCount = old.GSInstancesCount = 256;
-    ctx->PSGetShader(&old.PS, old.PSInstances, &old.PSInstancesCount);
-    ctx->VSGetShader(&old.VS, old.VSInstances, &old.VSInstancesCount);
-    ctx->VSGetConstantBuffers(0, 1, &old.VSConstantBuffer);
-    ctx->GSGetShader(&old.GS, old.GSInstances, &old.GSInstancesCount);
-
-    ctx->IAGetPrimitiveTopology(&old.PrimitiveTopology);
-    ctx->IAGetIndexBuffer(&old.IndexBuffer, &old.IndexBufferFormat, &old.IndexBufferOffset);
-    ctx->IAGetVertexBuffers(0, 1, &old.VertexBuffer, &old.VertexBufferStride, &old.VertexBufferOffset);
-    ctx->IAGetInputLayout(&old.InputLayout);
-
-    // Setup desired DX state
-    ImGui_ImplDX11_SetupRenderState(draw_data, ctx);
-
-    // Render command lists
-    // (Because we merged all buffers into a single one, we maintain our own offset into them)
-    int global_idx_offset = 0;
-    int global_vtx_offset = 0;
-    ImVec2 clip_off = draw_data->DisplayPos;
-    for (int n = 0; n < draw_data->CmdListsCount; n++)
-    {
-        const ImDrawList* cmd_list = draw_data->CmdLists[n];
-        for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
-        {
-            const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
-            if (pcmd->UserCallback != NULL)
-            {
-                // User callback, registered via ImDrawList::AddCallback()
-                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
-                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
-                    ImGui_ImplDX11_SetupRenderState(draw_data, ctx);
-                else
-                    pcmd->UserCallback(cmd_list, pcmd);
-            }
-            else
-            {
-                // Apply scissor/clipping rectangle
-                const D3D11_RECT r = { (LONG)(pcmd->ClipRect.x - clip_off.x), (LONG)(pcmd->ClipRect.y - clip_off.y), (LONG)(pcmd->ClipRect.z - clip_off.x), (LONG)(pcmd->ClipRect.w - clip_off.y) };
-                ctx->RSSetScissorRects(1, &r);
-
-                // Bind texture, Draw
-                ID3D11ShaderResourceView* texture_srv = (ID3D11ShaderResourceView*)pcmd->TextureId;
-                ctx->PSSetShaderResources(0, 1, &texture_srv);
-                ctx->DrawIndexed(pcmd->ElemCount, pcmd->IdxOffset + global_idx_offset, pcmd->VtxOffset + global_vtx_offset);
-            }
-        }
-        global_idx_offset += cmd_list->IdxBuffer.Size;
-        global_vtx_offset += cmd_list->VtxBuffer.Size;
-    }
-
-    // Restore modified DX state
-    ctx->RSSetScissorRects(old.ScissorRectsCount, old.ScissorRects);
-    ctx->RSSetViewports(old.ViewportsCount, old.Viewports);
-    ctx->RSSetState(old.RS); if (old.RS) old.RS->Release();
-    ctx->OMSetBlendState(old.BlendState, old.BlendFactor, old.SampleMask); if (old.BlendState) old.BlendState->Release();
-    ctx->OMSetDepthStencilState(old.DepthStencilState, old.StencilRef); if (old.DepthStencilState) old.DepthStencilState->Release();
-    ctx->PSSetShaderResources(0, 1, &old.PSShaderResource); if (old.PSShaderResource) old.PSShaderResource->Release();
-    ctx->PSSetSamplers(0, 1, &old.PSSampler); if (old.PSSampler) old.PSSampler->Release();
-    ctx->PSSetShader(old.PS, old.PSInstances, old.PSInstancesCount); if (old.PS) old.PS->Release();
-    for (UINT i = 0; i < old.PSInstancesCount; i++) if (old.PSInstances[i]) old.PSInstances[i]->Release();
-    ctx->VSSetShader(old.VS, old.VSInstances, old.VSInstancesCount); if (old.VS) old.VS->Release();
-    ctx->VSSetConstantBuffers(0, 1, &old.VSConstantBuffer); if (old.VSConstantBuffer) old.VSConstantBuffer->Release();
-    ctx->GSSetShader(old.GS, old.GSInstances, old.GSInstancesCount); if (old.GS) old.GS->Release();
-    for (UINT i = 0; i < old.VSInstancesCount; i++) if (old.VSInstances[i]) old.VSInstances[i]->Release();
-    ctx->IASetPrimitiveTopology(old.PrimitiveTopology);
-    ctx->IASetIndexBuffer(old.IndexBuffer, old.IndexBufferFormat, old.IndexBufferOffset); if (old.IndexBuffer) old.IndexBuffer->Release();
-    ctx->IASetVertexBuffers(0, 1, &old.VertexBuffer, &old.VertexBufferStride, &old.VertexBufferOffset); if (old.VertexBuffer) old.VertexBuffer->Release();
-    ctx->IASetInputLayout(old.InputLayout); if (old.InputLayout) old.InputLayout->Release();
-}
-
-static void ImGui_ImplDX11_CreateFontsTexture()
-{
-    // Build texture atlas
-    ImGuiIO& io = ImGui::GetIO();
-    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 = NULL;
-        D3D11_SUBRESOURCE_DATA subResource;
-        subResource.pSysMem = pixels;
-        subResource.SysMemPitch = desc.Width * 4;
-        subResource.SysMemSlicePitch = 0;
-        g_pd3dDevice->CreateTexture2D(&desc, &subResource, &pTexture);
-
-        // 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;
-        g_pd3dDevice->CreateShaderResourceView(pTexture, &srvDesc, &g_pFontTextureView);
-        pTexture->Release();
-    }
-
-    // Store our identifier
-    io.Fonts->TexID = (ImTextureID)g_pFontTextureView;
-
-    // Create texture sampler
-    {
-        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;
-        g_pd3dDevice->CreateSamplerState(&desc, &g_pFontSampler);
-    }
-}
-
-bool    ImGui_ImplDX11_CreateDeviceObjects()
-{
-    if (!g_pd3dDevice)
-        return false;
-    if (g_pFontSampler)
-        ImGui_ImplDX11_InvalidateDeviceObjects();
-
-    // By using D3DCompile() from <d3dcompiler.h> / d3dcompiler.lib, we introduce a dependency to a given version of d3dcompiler_XX.dll (see D3DCOMPILER_DLL_A)
-    // If you would like to use this DX11 sample code but remove this dependency you can:
-    //  1) compile once, save the compiled shader blobs into a file or source code and pass them to CreateVertexShader()/CreatePixelShader() [preferred solution]
-    //  2) use code to detect any version of the DLL and grab a pointer to D3DCompile from the DLL.
-    // See https://github.com/ocornut/imgui/pull/638 for sources and details.
-
-    // Create the vertex shader
-    {
-        static const char* vertexShader =
-            "cbuffer vertexBuffer : register(b0) \
-            {\
-              float4x4 ProjectionMatrix; \
-            };\
-            struct VS_INPUT\
-            {\
-              float2 pos : POSITION;\
-              float4 col : COLOR0;\
-              float2 uv  : TEXCOORD0;\
-            };\
-            \
-            struct PS_INPUT\
-            {\
-              float4 pos : SV_POSITION;\
-              float4 col : COLOR0;\
-              float2 uv  : TEXCOORD0;\
-            };\
-            \
-            PS_INPUT main(VS_INPUT input)\
-            {\
-              PS_INPUT output;\
-              output.pos = mul( ProjectionMatrix, float4(input.pos.xy, 0.f, 1.f));\
-              output.col = input.col;\
-              output.uv  = input.uv;\
-              return output;\
-            }";
-
-        ID3DBlob* vertexShaderBlob;
-        if (FAILED(D3DCompile(vertexShader, strlen(vertexShader), NULL, NULL, NULL, "main", "vs_4_0", 0, 0, &vertexShaderBlob, NULL)))
-            return false; // NB: Pass ID3DBlob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
-        if (g_pd3dDevice->CreateVertexShader(vertexShaderBlob->GetBufferPointer(), vertexShaderBlob->GetBufferSize(), NULL, &g_pVertexShader) != S_OK)
-        {
-            vertexShaderBlob->Release();
-            return false;
-        }
-
-        // Create the input layout
-        D3D11_INPUT_ELEMENT_DESC local_layout[] =
-        {
-            { "POSITION", 0, DXGI_FORMAT_R32G32_FLOAT,   0, (UINT)IM_OFFSETOF(ImDrawVert, pos), D3D11_INPUT_PER_VERTEX_DATA, 0 },
-            { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT,   0, (UINT)IM_OFFSETOF(ImDrawVert, uv),  D3D11_INPUT_PER_VERTEX_DATA, 0 },
-            { "COLOR",    0, DXGI_FORMAT_R8G8B8A8_UNORM, 0, (UINT)IM_OFFSETOF(ImDrawVert, col), D3D11_INPUT_PER_VERTEX_DATA, 0 },
-        };
-        if (g_pd3dDevice->CreateInputLayout(local_layout, 3, vertexShaderBlob->GetBufferPointer(), vertexShaderBlob->GetBufferSize(), &g_pInputLayout) != S_OK)
-        {
-            vertexShaderBlob->Release();
-            return false;
-        }
-        vertexShaderBlob->Release();
-
-        // Create the constant buffer
-        {
-            D3D11_BUFFER_DESC desc;
-            desc.ByteWidth = sizeof(VERTEX_CONSTANT_BUFFER);
-            desc.Usage = D3D11_USAGE_DYNAMIC;
-            desc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
-            desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
-            desc.MiscFlags = 0;
-            g_pd3dDevice->CreateBuffer(&desc, NULL, &g_pVertexConstantBuffer);
-        }
-    }
-
-    // Create the pixel shader
-    {
-        static const char* pixelShader =
-            "struct PS_INPUT\
-            {\
-            float4 pos : SV_POSITION;\
-            float4 col : COLOR0;\
-            float2 uv  : TEXCOORD0;\
-            };\
-            sampler sampler0;\
-            Texture2D texture0;\
-            \
-            float4 main(PS_INPUT input) : SV_Target\
-            {\
-            float4 out_col = input.col * texture0.Sample(sampler0, input.uv); \
-            return out_col; \
-            }";
-
-        ID3DBlob* pixelShaderBlob;
-        if (FAILED(D3DCompile(pixelShader, strlen(pixelShader), NULL, NULL, NULL, "main", "ps_4_0", 0, 0, &pixelShaderBlob, NULL)))
-            return false; // NB: Pass ID3DBlob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
-        if (g_pd3dDevice->CreatePixelShader(pixelShaderBlob->GetBufferPointer(), pixelShaderBlob->GetBufferSize(), NULL, &g_pPixelShader) != S_OK)
-        {
-            pixelShaderBlob->Release();
-            return false;
-        }
-        pixelShaderBlob->Release();
-    }
-
-    // Create the blending setup
-    {
-        D3D11_BLEND_DESC desc;
-        ZeroMemory(&desc, sizeof(desc));
-        desc.AlphaToCoverageEnable = false;
-        desc.RenderTarget[0].BlendEnable = true;
-        desc.RenderTarget[0].SrcBlend = D3D11_BLEND_SRC_ALPHA;
-        desc.RenderTarget[0].DestBlend = D3D11_BLEND_INV_SRC_ALPHA;
-        desc.RenderTarget[0].BlendOp = D3D11_BLEND_OP_ADD;
-        desc.RenderTarget[0].SrcBlendAlpha = D3D11_BLEND_INV_SRC_ALPHA;
-        desc.RenderTarget[0].DestBlendAlpha = D3D11_BLEND_ZERO;
-        desc.RenderTarget[0].BlendOpAlpha = D3D11_BLEND_OP_ADD;
-        desc.RenderTarget[0].RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL;
-        g_pd3dDevice->CreateBlendState(&desc, &g_pBlendState);
-    }
-
-    // Create the rasterizer state
-    {
-        D3D11_RASTERIZER_DESC desc;
-        ZeroMemory(&desc, sizeof(desc));
-        desc.FillMode = D3D11_FILL_SOLID;
-        desc.CullMode = D3D11_CULL_NONE;
-        desc.ScissorEnable = true;
-        desc.DepthClipEnable = true;
-        g_pd3dDevice->CreateRasterizerState(&desc, &g_pRasterizerState);
-    }
-
-    // Create depth-stencil State
-    {
-        D3D11_DEPTH_STENCIL_DESC desc;
-        ZeroMemory(&desc, sizeof(desc));
-        desc.DepthEnable = false;
-        desc.DepthWriteMask = D3D11_DEPTH_WRITE_MASK_ALL;
-        desc.DepthFunc = D3D11_COMPARISON_ALWAYS;
-        desc.StencilEnable = false;
-        desc.FrontFace.StencilFailOp = desc.FrontFace.StencilDepthFailOp = desc.FrontFace.StencilPassOp = D3D11_STENCIL_OP_KEEP;
-        desc.FrontFace.StencilFunc = D3D11_COMPARISON_ALWAYS;
-        desc.BackFace = desc.FrontFace;
-        g_pd3dDevice->CreateDepthStencilState(&desc, &g_pDepthStencilState);
-    }
-
-    ImGui_ImplDX11_CreateFontsTexture();
-
-    return true;
-}
-
-void    ImGui_ImplDX11_InvalidateDeviceObjects()
-{
-    if (!g_pd3dDevice)
-        return;
-
-    if (g_pFontSampler) { g_pFontSampler->Release(); g_pFontSampler = NULL; }
-    if (g_pFontTextureView) { g_pFontTextureView->Release(); g_pFontTextureView = NULL; ImGui::GetIO().Fonts->TexID = NULL; } // We copied g_pFontTextureView to io.Fonts->TexID so let's clear that as well.
-    if (g_pIB) { g_pIB->Release(); g_pIB = NULL; }
-    if (g_pVB) { g_pVB->Release(); g_pVB = NULL; }
-
-    if (g_pBlendState) { g_pBlendState->Release(); g_pBlendState = NULL; }
-    if (g_pDepthStencilState) { g_pDepthStencilState->Release(); g_pDepthStencilState = NULL; }
-    if (g_pRasterizerState) { g_pRasterizerState->Release(); g_pRasterizerState = NULL; }
-    if (g_pPixelShader) { g_pPixelShader->Release(); g_pPixelShader = NULL; }
-    if (g_pVertexConstantBuffer) { g_pVertexConstantBuffer->Release(); g_pVertexConstantBuffer = NULL; }
-    if (g_pInputLayout) { g_pInputLayout->Release(); g_pInputLayout = NULL; }
-    if (g_pVertexShader) { g_pVertexShader->Release(); g_pVertexShader = NULL; }
-}
-
-bool    ImGui_ImplDX11_Init(ID3D11Device* device, ID3D11DeviceContext* device_context)
-{
-    // Setup back-end capabilities flags
-    ImGuiIO& io = ImGui::GetIO();
-    io.BackendRendererName = "imgui_impl_dx11";
-    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
-
-    // Get factory from device
-    IDXGIDevice* pDXGIDevice = NULL;
-    IDXGIAdapter* pDXGIAdapter = NULL;
-    IDXGIFactory* pFactory = NULL;
-
-    if (device->QueryInterface(IID_PPV_ARGS(&pDXGIDevice)) == S_OK)
-        if (pDXGIDevice->GetParent(IID_PPV_ARGS(&pDXGIAdapter)) == S_OK)
-            if (pDXGIAdapter->GetParent(IID_PPV_ARGS(&pFactory)) == S_OK)
-            {
-                g_pd3dDevice = device;
-                g_pd3dDeviceContext = device_context;
-                g_pFactory = pFactory;
-            }
-    if (pDXGIDevice) pDXGIDevice->Release();
-    if (pDXGIAdapter) pDXGIAdapter->Release();
-    g_pd3dDevice->AddRef();
-    g_pd3dDeviceContext->AddRef();
-
-    return true;
-}
-
-void ImGui_ImplDX11_Shutdown()
-{
-    ImGui_ImplDX11_InvalidateDeviceObjects();
-    if (g_pFactory) { g_pFactory->Release(); g_pFactory = NULL; }
-    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
-    if (g_pd3dDeviceContext) { g_pd3dDeviceContext->Release(); g_pd3dDeviceContext = NULL; }
-}
-
-void ImGui_ImplDX11_NewFrame()
-{
-    if (!g_pFontSampler)
-        ImGui_ImplDX11_CreateDeviceObjects();
-}
diff --git a/client/src/ui/imgui/imgui_impl_dx11.h b/client/src/ui/imgui/imgui_impl_dx11.h
deleted file mode 100644
index cccadcd..0000000
--- a/client/src/ui/imgui/imgui_impl_dx11.h
+++ /dev/null
@@ -1,25 +0,0 @@
-// dear imgui: Renderer for DirectX11
-// This needs to be used along with a Platform Binding (e.g. Win32)
-
-// Implemented features:
-//  [X] Renderer: User texture binding. Use 'ID3D11ShaderResourceView*' as ImTextureID. Read the FAQ about ImTextureID!
-//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
-
-// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
-// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
-// https://github.com/ocornut/imgui
-
-#pragma once
-#include "imgui.h"      // IMGUI_IMPL_API
-
-struct ID3D11Device;
-struct ID3D11DeviceContext;
-
-IMGUI_IMPL_API bool     ImGui_ImplDX11_Init(ID3D11Device* device, ID3D11DeviceContext* device_context);
-IMGUI_IMPL_API void     ImGui_ImplDX11_Shutdown();
-IMGUI_IMPL_API void     ImGui_ImplDX11_NewFrame();
-IMGUI_IMPL_API void     ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data);
-
-// Use if you want to reset your rendering device without losing Dear ImGui state.
-IMGUI_IMPL_API void     ImGui_ImplDX11_InvalidateDeviceObjects();
-IMGUI_IMPL_API bool     ImGui_ImplDX11_CreateDeviceObjects();
diff --git a/client/src/ui/imgui/imgui_impl_dx9.cpp b/client/src/ui/imgui/imgui_impl_dx9.cpp
new file mode 100644
index 0000000..b4c49cd
--- /dev/null
+++ b/client/src/ui/imgui/imgui_impl_dx9.cpp
@@ -0,0 +1,284 @@
+// dear imgui: Renderer for DirectX9
+// This needs to be used along with a Platform Binding (e.g. Win32)
+
+// Implemented features:
+//  [X] Renderer: User texture binding. Use 'LPDIRECT3DTEXTURE9' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+// CHANGELOG
+// (minor and older changes stripped away, please see git history for details)
+//  2019-05-29: DirectX9: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
+//  2019-04-30: DirectX9: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
+//  2019-03-29: Misc: Fixed erroneous assert in ImGui_ImplDX9_InvalidateDeviceObjects().
+//  2019-01-16: Misc: Disabled fog before drawing UI's. Fixes issue #2288.
+//  2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
+//  2018-06-08: Misc: Extracted imgui_impl_dx9.cpp/.h away from the old combined DX9+Win32 example.
+//  2018-06-08: DirectX9: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle.
+//  2018-05-07: Render: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud.
+//  2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplDX9_RenderDrawData() in the .h file so you can call it yourself.
+//  2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
+
+#include "imgui.h"
+#include "imgui_impl_dx9.h"
+
+// DirectX
+#include <d3d9.h>
+#define DIRECTINPUT_VERSION 0x0800
+#include <dinput.h>
+
+// DirectX data
+static LPDIRECT3DDEVICE9        g_pd3dDevice = NULL;
+static LPDIRECT3DVERTEXBUFFER9  g_pVB = NULL;
+static LPDIRECT3DINDEXBUFFER9   g_pIB = NULL;
+static LPDIRECT3DTEXTURE9       g_FontTexture = NULL;
+static int                      g_VertexBufferSize = 5000, g_IndexBufferSize = 10000;
+
+struct CUSTOMVERTEX
+{
+    float    pos[3];
+    D3DCOLOR col;
+    float    uv[2];
+};
+#define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ|D3DFVF_DIFFUSE|D3DFVF_TEX1)
+
+static void ImGui_ImplDX9_SetupRenderState(ImDrawData* draw_data)
+{
+    // Setup viewport
+    D3DVIEWPORT9 vp;
+    vp.X = vp.Y = 0;
+    vp.Width = (DWORD)draw_data->DisplaySize.x;
+    vp.Height = (DWORD)draw_data->DisplaySize.y;
+    vp.MinZ = 0.0f;
+    vp.MaxZ = 1.0f;
+    g_pd3dDevice->SetViewport(&vp);
+
+    // Setup render state: fixed-pipeline, alpha-blending, no face culling, no depth testing, shade mode (for gradient)
+    g_pd3dDevice->SetPixelShader(NULL);
+    g_pd3dDevice->SetVertexShader(NULL);
+    g_pd3dDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_NONE);
+    g_pd3dDevice->SetRenderState(D3DRS_LIGHTING, FALSE);
+    g_pd3dDevice->SetRenderState(D3DRS_ZENABLE, FALSE);
+    g_pd3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, TRUE);
+    g_pd3dDevice->SetRenderState(D3DRS_ALPHATESTENABLE, FALSE);
+    g_pd3dDevice->SetRenderState(D3DRS_BLENDOP, D3DBLENDOP_ADD);
+    g_pd3dDevice->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCALPHA);
+    g_pd3dDevice->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA);
+    g_pd3dDevice->SetRenderState(D3DRS_SCISSORTESTENABLE, TRUE);
+    g_pd3dDevice->SetRenderState(D3DRS_SHADEMODE, D3DSHADE_GOURAUD);
+    g_pd3dDevice->SetRenderState(D3DRS_FOGENABLE, FALSE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLOROP, D3DTOP_MODULATE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG1, D3DTA_TEXTURE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG2, D3DTA_DIFFUSE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_ALPHAOP, D3DTOP_MODULATE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE);
+    g_pd3dDevice->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR);
+    g_pd3dDevice->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR);
+
+    // Setup orthographic projection matrix
+    // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
+    // Being agnostic of whether <d3dx9.h> or <DirectXMath.h> can be used, we aren't relying on D3DXMatrixIdentity()/D3DXMatrixOrthoOffCenterLH() or DirectX::XMMatrixIdentity()/DirectX::XMMatrixOrthographicOffCenterLH()
+    {
+        float L = draw_data->DisplayPos.x + 0.5f;
+        float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x + 0.5f;
+        float T = draw_data->DisplayPos.y + 0.5f;
+        float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y + 0.5f;
+        D3DMATRIX mat_identity = { { { 1.0f, 0.0f, 0.0f, 0.0f,  0.0f, 1.0f, 0.0f, 0.0f,  0.0f, 0.0f, 1.0f, 0.0f,  0.0f, 0.0f, 0.0f, 1.0f } } };
+        D3DMATRIX mat_projection =
+        { { {
+            2.0f/(R-L),   0.0f,         0.0f,  0.0f,
+            0.0f,         2.0f/(T-B),   0.0f,  0.0f,
+            0.0f,         0.0f,         0.5f,  0.0f,
+            (L+R)/(L-R),  (T+B)/(B-T),  0.5f,  1.0f
+        } } };
+        g_pd3dDevice->SetTransform(D3DTS_WORLD, &mat_identity);
+        g_pd3dDevice->SetTransform(D3DTS_VIEW, &mat_identity);
+        g_pd3dDevice->SetTransform(D3DTS_PROJECTION, &mat_projection);
+    }
+}
+
+// Render function.
+// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
+void ImGui_ImplDX9_RenderDrawData(ImDrawData* draw_data)
+{
+    // Avoid rendering when minimized
+    if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
+        return;
+
+    // Create and grow buffers if needed
+    if (!g_pVB || g_VertexBufferSize < draw_data->TotalVtxCount)
+    {
+        if (g_pVB) { g_pVB->Release(); g_pVB = NULL; }
+        g_VertexBufferSize = draw_data->TotalVtxCount + 5000;
+        if (g_pd3dDevice->CreateVertexBuffer(g_VertexBufferSize * sizeof(CUSTOMVERTEX), D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &g_pVB, NULL) < 0)
+            return;
+    }
+    if (!g_pIB || g_IndexBufferSize < draw_data->TotalIdxCount)
+    {
+        if (g_pIB) { g_pIB->Release(); g_pIB = NULL; }
+        g_IndexBufferSize = draw_data->TotalIdxCount + 10000;
+        if (g_pd3dDevice->CreateIndexBuffer(g_IndexBufferSize * sizeof(ImDrawIdx), D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, sizeof(ImDrawIdx) == 2 ? D3DFMT_INDEX16 : D3DFMT_INDEX32, D3DPOOL_DEFAULT, &g_pIB, NULL) < 0)
+            return;
+    }
+
+    // Backup the DX9 state
+    IDirect3DStateBlock9* d3d9_state_block = NULL;
+    if (g_pd3dDevice->CreateStateBlock(D3DSBT_ALL, &d3d9_state_block) < 0)
+        return;
+
+    // Backup the DX9 transform (DX9 documentation suggests that it is included in the StateBlock but it doesn't appear to)
+    D3DMATRIX last_world, last_view, last_projection;
+    g_pd3dDevice->GetTransform(D3DTS_WORLD, &last_world);
+    g_pd3dDevice->GetTransform(D3DTS_VIEW, &last_view);
+    g_pd3dDevice->GetTransform(D3DTS_PROJECTION, &last_projection);
+
+    // Copy and convert all vertices into a single contiguous buffer, convert colors to DX9 default format.
+    // FIXME-OPT: This is a waste of resource, the ideal is to use imconfig.h and
+    //  1) to avoid repacking colors:   #define IMGUI_USE_BGRA_PACKED_COLOR
+    //  2) to avoid repacking vertices: #define IMGUI_OVERRIDE_DRAWVERT_STRUCT_LAYOUT struct ImDrawVert { ImVec2 pos; float z; ImU32 col; ImVec2 uv; }
+    CUSTOMVERTEX* vtx_dst;
+    ImDrawIdx* idx_dst;
+    if (g_pVB->Lock(0, (UINT)(draw_data->TotalVtxCount * sizeof(CUSTOMVERTEX)), (void**)&vtx_dst, D3DLOCK_DISCARD) < 0)
+        return;
+    if (g_pIB->Lock(0, (UINT)(draw_data->TotalIdxCount * sizeof(ImDrawIdx)), (void**)&idx_dst, D3DLOCK_DISCARD) < 0)
+        return;
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
+    {
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+        const ImDrawVert* vtx_src = cmd_list->VtxBuffer.Data;
+        for (int i = 0; i < cmd_list->VtxBuffer.Size; i++)
+        {
+            vtx_dst->pos[0] = vtx_src->pos.x;
+            vtx_dst->pos[1] = vtx_src->pos.y;
+            vtx_dst->pos[2] = 0.0f;
+            vtx_dst->col = (vtx_src->col & 0xFF00FF00) | ((vtx_src->col & 0xFF0000) >> 16) | ((vtx_src->col & 0xFF) << 16);     // RGBA --> ARGB for DirectX9
+            vtx_dst->uv[0] = vtx_src->uv.x;
+            vtx_dst->uv[1] = vtx_src->uv.y;
+            vtx_dst++;
+            vtx_src++;
+        }
+        memcpy(idx_dst, cmd_list->IdxBuffer.Data, cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx));
+        idx_dst += cmd_list->IdxBuffer.Size;
+    }
+    g_pVB->Unlock();
+    g_pIB->Unlock();
+    g_pd3dDevice->SetStreamSource(0, g_pVB, 0, sizeof(CUSTOMVERTEX));
+    g_pd3dDevice->SetIndices(g_pIB);
+    g_pd3dDevice->SetFVF(D3DFVF_CUSTOMVERTEX);
+
+    // Setup desired DX state
+    ImGui_ImplDX9_SetupRenderState(draw_data);
+
+    // Render command lists
+    // (Because we merged all buffers into a single one, we maintain our own offset into them)
+    int global_vtx_offset = 0;
+    int global_idx_offset = 0;
+    ImVec2 clip_off = draw_data->DisplayPos;
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
+    {
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+        for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
+        {
+            const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
+            if (pcmd->UserCallback != NULL)
+            {
+                // User callback, registered via ImDrawList::AddCallback()
+                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
+                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                    ImGui_ImplDX9_SetupRenderState(draw_data);
+                else
+                    pcmd->UserCallback(cmd_list, pcmd);
+            }
+            else
+            {
+                const RECT r = { (LONG)(pcmd->ClipRect.x - clip_off.x), (LONG)(pcmd->ClipRect.y - clip_off.y), (LONG)(pcmd->ClipRect.z - clip_off.x), (LONG)(pcmd->ClipRect.w - clip_off.y) };
+                const LPDIRECT3DTEXTURE9 texture = (LPDIRECT3DTEXTURE9)pcmd->TextureId;
+                g_pd3dDevice->SetTexture(0, texture);
+                g_pd3dDevice->SetScissorRect(&r);
+                g_pd3dDevice->DrawIndexedPrimitive(D3DPT_TRIANGLELIST, pcmd->VtxOffset + global_vtx_offset, 0, (UINT)cmd_list->VtxBuffer.Size, pcmd->IdxOffset + global_idx_offset, pcmd->ElemCount / 3);
+            }
+        }
+        global_idx_offset += cmd_list->IdxBuffer.Size;
+        global_vtx_offset += cmd_list->VtxBuffer.Size;
+    }
+
+    // Restore the DX9 transform
+    g_pd3dDevice->SetTransform(D3DTS_WORLD, &last_world);
+    g_pd3dDevice->SetTransform(D3DTS_VIEW, &last_view);
+    g_pd3dDevice->SetTransform(D3DTS_PROJECTION, &last_projection);
+
+    // Restore the DX9 state
+    d3d9_state_block->Apply();
+    d3d9_state_block->Release();
+}
+
+bool ImGui_ImplDX9_Init(IDirect3DDevice9* device)
+{
+    // Setup back-end capabilities flags
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendRendererName = "imgui_impl_dx9";
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
+
+    g_pd3dDevice = device;
+    g_pd3dDevice->AddRef();
+    return true;
+}
+
+void ImGui_ImplDX9_Shutdown()
+{
+    ImGui_ImplDX9_InvalidateDeviceObjects();
+    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
+}
+
+static bool ImGui_ImplDX9_CreateFontsTexture()
+{
+    // Build texture atlas
+    ImGuiIO& io = ImGui::GetIO();
+    unsigned char* pixels;
+    int width, height, bytes_per_pixel;
+    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height, &bytes_per_pixel);
+
+    // Upload texture to graphics system
+    g_FontTexture = NULL;
+    if (g_pd3dDevice->CreateTexture(width, height, 1, D3DUSAGE_DYNAMIC, D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, &g_FontTexture, NULL) < 0)
+        return false;
+    D3DLOCKED_RECT tex_locked_rect;
+    if (g_FontTexture->LockRect(0, &tex_locked_rect, NULL, 0) != D3D_OK)
+        return false;
+    for (int y = 0; y < height; y++)
+        memcpy((unsigned char*)tex_locked_rect.pBits + tex_locked_rect.Pitch * y, pixels + (width * bytes_per_pixel) * y, (width * bytes_per_pixel));
+    g_FontTexture->UnlockRect(0);
+
+    // Store our identifier
+    io.Fonts->TexID = (ImTextureID)g_FontTexture;
+
+    return true;
+}
+
+bool ImGui_ImplDX9_CreateDeviceObjects()
+{
+    if (!g_pd3dDevice)
+        return false;
+    if (!ImGui_ImplDX9_CreateFontsTexture())
+        return false;
+    return true;
+}
+
+void ImGui_ImplDX9_InvalidateDeviceObjects()
+{
+    if (!g_pd3dDevice)
+        return;
+    if (g_pVB) { g_pVB->Release(); g_pVB = NULL; }
+    if (g_pIB) { g_pIB->Release(); g_pIB = NULL; }
+    if (g_FontTexture) { g_FontTexture->Release(); g_FontTexture = NULL; ImGui::GetIO().Fonts->TexID = NULL; } // We copied g_pFontTextureView to io.Fonts->TexID so let's clear that as well.
+}
+
+void ImGui_ImplDX9_NewFrame()
+{
+    if (!g_FontTexture)
+        ImGui_ImplDX9_CreateDeviceObjects();
+}
diff --git a/client/src/ui/imgui/imgui_impl_dx9.h b/client/src/ui/imgui/imgui_impl_dx9.h
new file mode 100644
index 0000000..b93c89f
--- /dev/null
+++ b/client/src/ui/imgui/imgui_impl_dx9.h
@@ -0,0 +1,24 @@
+// dear imgui: Renderer for DirectX9
+// This needs to be used along with a Platform Binding (e.g. Win32)
+
+// Implemented features:
+//  [X] Renderer: User texture binding. Use 'LPDIRECT3DTEXTURE9' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+#pragma once
+#include "imgui.h"      // IMGUI_IMPL_API
+
+struct IDirect3DDevice9;
+
+IMGUI_IMPL_API bool     ImGui_ImplDX9_Init(IDirect3DDevice9* device);
+IMGUI_IMPL_API void     ImGui_ImplDX9_Shutdown();
+IMGUI_IMPL_API void     ImGui_ImplDX9_NewFrame();
+IMGUI_IMPL_API void     ImGui_ImplDX9_RenderDrawData(ImDrawData* draw_data);
+
+// Use if you want to reset your rendering device without losing Dear ImGui state.
+IMGUI_IMPL_API bool     ImGui_ImplDX9_CreateDeviceObjects();
+IMGUI_IMPL_API void     ImGui_ImplDX9_InvalidateDeviceObjects();
diff --git a/client/src/ui/ui.cpp b/client/src/ui/ui.cpp
index 242bb5c..3ef383d 100644
--- a/client/src/ui/ui.cpp
+++ b/client/src/ui/ui.cpp
@@ -1,10 +1,9 @@
 #include "../include.h"
 #include "ui.h"
 
-ID3D11Device* ui::device;
-ID3D11DeviceContext* ui::device_context;
-IDXGISwapChain* ui::swap_chain;
-ID3D11RenderTargetView* ui::main_render_target;
+IDirect3D9* ui::d3d;
+IDirect3DDevice9* ui::device;
+D3DPRESENT_PARAMETERS ui::present_params;
 
 extern IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
 
@@ -12,8 +11,7 @@ LRESULT ui::wnd_proc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam) {
 	if (ImGui_ImplWin32_WndProcHandler(hwnd, message, wparam, lparam))
 		return true;
 
-	switch (message)
-	{
+	switch (message) {
 		case WM_DESTROY:
 			PostQuitMessage(0);
 			return 0;
@@ -22,7 +20,7 @@ LRESULT ui::wnd_proc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam) {
 	return DefWindowProc(hwnd, message, wparam, lparam);
 }
 
-HWND ui::create(HINSTANCE instance, const std::pair<int, int> size, const std::pair<int, int> pos /*= { 400, 400 }*/) {
+HWND ui::create_window(HINSTANCE instance, const std::pair<int, int> size, const std::pair<int, int> pos /*= { 400, 400 }*/) {
 	WNDCLASSEX wc;
 
 	std::memset(&wc, 0, sizeof(wc));
@@ -43,61 +41,29 @@ HWND ui::create(HINSTANCE instance, const std::pair<int, int> size, const std::p
 }
 
 bool ui::create_device(HWND hwnd) {
-	DXGI_SWAP_CHAIN_DESC sd;
-	ZeroMemory(&sd, sizeof(sd));
-	sd.BufferCount = 2;
-	sd.BufferDesc.Width = 0;
-	sd.BufferDesc.Height = 0;
-	sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
-	sd.BufferDesc.RefreshRate.Numerator = 60;
-	sd.BufferDesc.RefreshRate.Denominator = 1;
-	sd.Flags = DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH;
-	sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
-	sd.OutputWindow = hwnd;
-	sd.SampleDesc.Count = 1;
-	sd.SampleDesc.Quality = 0;
-	sd.Windowed = TRUE;
-	sd.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
-
-	UINT createDeviceFlags = 0;
-	//createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG;
-	D3D_FEATURE_LEVEL featureLevel;
-	const D3D_FEATURE_LEVEL featureLevelArray[2] = { D3D_FEATURE_LEVEL_11_0, D3D_FEATURE_LEVEL_10_0, };
-	auto ret = D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL, createDeviceFlags, featureLevelArray, 2,
-		D3D11_SDK_VERSION, &sd, &swap_chain, &device, &featureLevel, &device_context);
-	if (ret != S_OK)
+	d3d = Direct3DCreate9(D3D_SDK_VERSION);
+	if (!d3d) {
 		return false;
+	}
 
-	create_target();
+	std::memset(&present_params, 0, sizeof(present_params));
 
-	return true;
-}
+	present_params.Windowed = TRUE;
+	present_params.SwapEffect = D3DSWAPEFFECT_DISCARD;
+	present_params.BackBufferFormat = D3DFMT_UNKNOWN;
+	present_params.EnableAutoDepthStencil = TRUE;
+	present_params.AutoDepthStencilFormat = D3DFMT_D16;
+	present_params.PresentationInterval = D3DPRESENT_INTERVAL_ONE;
 
-void ui::create_target() {
-	ID3D11Texture2D* pBackBuffer;
-	swap_chain->GetBuffer(0, IID_PPV_ARGS(&pBackBuffer));
-	device->CreateRenderTargetView(pBackBuffer, NULL, &main_render_target);
-	pBackBuffer->Release();
-}
-
-void ui::cleanup_target() {
-	if (main_render_target) {
-		main_render_target->Release();
-		main_render_target = nullptr;
+	auto res = d3d->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hwnd, D3DCREATE_HARDWARE_VERTEXPROCESSING, &present_params, &device);
+	if (res != D3D_OK) {
+		return false;
 	}
+
+	return true;
 }
 
 void ui::cleanup_device() {
-	cleanup_target();
-	if (swap_chain) {
-		swap_chain->Release();
-	}
-
-	if (device_context) {
-		device_context->Release();
-	}
-
-	if (device) {
-		device->Release();
-	}
+	device->Release();
+	d3d->Release();
 }
\ No newline at end of file
diff --git a/client/src/ui/ui.h b/client/src/ui/ui.h
index 7fd3248..4ad7c76 100644
--- a/client/src/ui/ui.h
+++ b/client/src/ui/ui.h
@@ -2,23 +2,21 @@
 
 #include "imgui/imgui.h"
 
+#include "imgui/imgui_impl_dx9.h"
 #include "imgui/imgui_impl_win32.h"
-#include "imgui/imgui_impl_dx11.h"
 #include "imgui/imgui_stdlib.h"
-#include <d3d11.h>
+
+#include <d3d9.h>
 
 namespace ui {
-	extern ID3D11Device* device;
-	extern ID3D11DeviceContext* device_context;
-	extern IDXGISwapChain* swap_chain;
-	extern ID3D11RenderTargetView* main_render_target;
+	extern IDirect3D9* d3d;
+	extern IDirect3DDevice9* device;
+	extern D3DPRESENT_PARAMETERS present_params;
 
 	LRESULT wnd_proc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam);
 
-	HWND create(HINSTANCE instance, const std::pair<int, int> size, const std::pair<int, int> pos = { 400, 400 });
+	HWND create_window(HINSTANCE instance, const std::pair<int, int> size, const std::pair<int, int> pos = { 400, 400 });
 
 	bool create_device(HWND hwnd);
-	void create_target();
-	void cleanup_target();
 	void cleanup_device();
 };
\ No newline at end of file