// 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 in imgui.cpp. // 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) // 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 #define DIRECTINPUT_VERSION 0x0800 #include // 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) // 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 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->SetTextureStageState(0, D3DTSS_COLOROP, D3DTOP_MODULATE); g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG1, D3DTA_TEXTURE); g_pd3dDevice->SetTextureStageState(0,