Updated Dear ImGui
MisterY52
3 years ago
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commit
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// dear imgui: Renderer Backend for DirectX11
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// This needs to be used along with a Platform Backend (e.g. Win32)
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// Implemented features:
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// [X] Renderer: User texture binding. Use 'ID3D11ShaderResourceView*' as ImTextureID. Read the FAQ about ImTextureID!
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// [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
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// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
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// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
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// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
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// Read online: https://github.com/ocornut/imgui/tree/master/docs
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// CHANGELOG
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// (minor and older changes stripped away, please see git history for details)
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// 2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).
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// 2021-05-19: DirectX11: Replaced direct access to ImDrawCmd::TextureId with a call to ImDrawCmd::GetTexID(). (will become a requirement)
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// 2021-02-18: DirectX11: Change blending equation to preserve alpha in output buffer.
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// 2019-08-01: DirectX11: Fixed code querying the Geometry Shader state (would generally error with Debug layer enabled).
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// 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.
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// 2019-05-29: DirectX11: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
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// 2019-04-30: DirectX11: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
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// 2018-12-03: Misc: Added #pragma comment statement to automatically link with d3dcompiler.lib when using D3DCompile().
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// 2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
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// 2018-08-01: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility.
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// 2018-07-13: DirectX11: Fixed unreleased resources in Init and Shutdown functions.
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// 2018-06-08: Misc: Extracted imgui_impl_dx11.cpp/.h away from the old combined DX11+Win32 example.
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// 2018-06-08: DirectX11: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle.
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// 2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplDX11_RenderDrawData() in the .h file so you can call it yourself.
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// 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
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// 2016-05-07: DirectX11: Disabling depth-write.
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#include "imgui.h"
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#include "imgui_impl_dx11.h"
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// DirectX
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#include <stdio.h>
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#include <d3d11.h>
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#include <d3dcompiler.h>
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#ifdef _MSC_VER
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#pragma comment(lib, "d3dcompiler") // Automatically link with d3dcompiler.lib as we are using D3DCompile() below.
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#endif
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// DirectX11 data
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struct ImGui_ImplDX11_Data
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{
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ID3D11Device* pd3dDevice;
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ID3D11DeviceContext* pd3dDeviceContext;
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IDXGIFactory* pFactory;
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ID3D11Buffer* pVB;
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ID3D11Buffer* pIB;
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ID3D11VertexShader* pVertexShader;
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ID3D11InputLayout* pInputLayout;
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ID3D11Buffer* pVertexConstantBuffer;
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ID3D11PixelShader* pPixelShader;
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ID3D11SamplerState* pFontSampler;
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ID3D11ShaderResourceView* pFontTextureView;
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ID3D11RasterizerState* pRasterizerState;
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ID3D11BlendState* pBlendState;
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ID3D11DepthStencilState* pDepthStencilState;
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int VertexBufferSize;
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int IndexBufferSize;
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ImGui_ImplDX11_Data() { memset(this, 0, sizeof(*this)); VertexBufferSize = 5000; IndexBufferSize = 10000; }
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};
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struct VERTEX_CONSTANT_BUFFER
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{
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float mvp[4][4];
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};
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// Backend data stored in io.BackendRendererUserData to allow support for multiple Dear ImGui contexts
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// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.
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static ImGui_ImplDX11_Data* ImGui_ImplDX11_GetBackendData()
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{
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return ImGui::GetCurrentContext() ? (ImGui_ImplDX11_Data*)ImGui::GetIO().BackendRendererUserData : NULL;
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}
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// Functions
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static void ImGui_ImplDX11_SetupRenderState(ImDrawData* draw_data, ID3D11DeviceContext* ctx)
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{
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ImGui_ImplDX11_Data* bd = ImGui_ImplDX11_GetBackendData();
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// Setup viewport
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D3D11_VIEWPORT vp;
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memset(&vp, 0, sizeof(D3D11_VIEWPORT));
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vp.Width = draw_data->DisplaySize.x;
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vp.Height = draw_data->DisplaySize.y;
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vp.MinDepth = 0.0f;
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vp.MaxDepth = 1.0f;
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vp.TopLeftX = vp.TopLeftY = 0;
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ctx->RSSetViewports(1, &vp);
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// Setup shader and vertex buffers
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unsigned int stride = sizeof(ImDrawVert);
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unsigned int offset = 0;
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ctx->IASetInputLayout(bd->pInputLayout);
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ctx->IASetVertexBuffers(0, 1, &bd->pVB, &stride, &offset);
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ctx->IASetIndexBuffer(bd->pIB, sizeof(ImDrawIdx) == 2 ? DXGI_FORMAT_R16_UINT : DXGI_FORMAT_R32_UINT, 0);
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ctx->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
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ctx->VSSetShader(bd->pVertexShader, NULL, 0);
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ctx->VSSetConstantBuffers(0, 1, &bd->pVertexConstantBuffer);
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ctx->PSSetShader(bd->pPixelShader, NULL, 0);
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ctx->PSSetSamplers(0, 1, &bd->pFontSampler);
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ctx->GSSetShader(NULL, NULL, 0);
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ctx->HSSetShader(NULL, NULL, 0); // In theory we should backup and restore this as well.. very infrequently used..
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ctx->DSSetShader(NULL, NULL, 0); // In theory we should backup and restore this as well.. very infrequently used..
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ctx->CSSetShader(NULL, NULL, 0); // In theory we should backup and restore this as well.. very infrequently used..
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// Setup blend state
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const float blend_factor[4] = { 0.f, 0.f, 0.f, 0.f };
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ctx->OMSetBlendState(bd->pBlendState, blend_factor, 0xffffffff);
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ctx->OMSetDepthStencilState(bd->pDepthStencilState, 0);
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ctx->RSSetState(bd->pRasterizerState);
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}
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// Render function
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void ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data)
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{
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// Avoid rendering when minimized
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if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
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return;
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ImGui_ImplDX11_Data* bd = ImGui_ImplDX11_GetBackendData();
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ID3D11DeviceContext* ctx = bd->pd3dDeviceContext;
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// Create and grow vertex/index buffers if needed
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if (!bd->pVB || bd->VertexBufferSize < draw_data->TotalVtxCount)
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{
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if (bd->pVB) { bd->pVB->Release(); bd->pVB = NULL; }
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bd->VertexBufferSize = draw_data->TotalVtxCount + 5000;
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D3D11_BUFFER_DESC desc;
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memset(&desc, 0, sizeof(D3D11_BUFFER_DESC));
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desc.Usage = D3D11_USAGE_DYNAMIC;
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desc.ByteWidth = bd->VertexBufferSize * sizeof(ImDrawVert);
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desc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
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desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
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desc.MiscFlags = 0;
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if (bd->pd3dDevice->CreateBuffer(&desc, NULL, &bd->pVB) < 0)
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return;
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}
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if (!bd->pIB || bd->IndexBufferSize < draw_data->TotalIdxCount)
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{
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if (bd->pIB) { bd->pIB->Release(); bd->pIB = NULL; }
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bd->IndexBufferSize = draw_data->TotalIdxCount + 10000;
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D3D11_BUFFER_DESC desc;
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memset(&desc, 0, sizeof(D3D11_BUFFER_DESC));
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desc.Usage = D3D11_USAGE_DYNAMIC;
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desc.ByteWidth = bd->IndexBufferSize * sizeof(ImDrawIdx);
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desc.BindFlags = D3D11_BIND_INDEX_BUFFER;
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desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
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if (bd->pd3dDevice->CreateBuffer(&desc, NULL, &bd->pIB) < 0)
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return;
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}
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// Upload vertex/index data into a single contiguous GPU buffer
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D3D11_MAPPED_SUBRESOURCE vtx_resource, idx_resource;
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if (ctx->Map(bd->pVB, 0, D3D11_MAP_WRITE_DISCARD, 0, &vtx_resource) != S_OK)
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return;
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if (ctx->Map(bd->pIB, 0, D3D11_MAP_WRITE_DISCARD, 0, &idx_resource) != S_OK)
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return;
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ImDrawVert* vtx_dst = (ImDrawVert*)vtx_resource.pData;
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ImDrawIdx* idx_dst = (ImDrawIdx*)idx_resource.pData;
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for (int n = 0; n < draw_data->CmdListsCount; n++)
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{
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const ImDrawList* cmd_list = draw_data->CmdLists[n];
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memcpy(vtx_dst, cmd_list->VtxBuffer.Data, cmd_list->VtxBuffer.Size * sizeof(ImDrawVert));
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memcpy(idx_dst, cmd_list->IdxBuffer.Data, cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx));
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vtx_dst += cmd_list->VtxBuffer.Size;
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idx_dst += cmd_list->IdxBuffer.Size;
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}
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ctx->Unmap(bd->pVB, 0);
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ctx->Unmap(bd->pIB, 0);
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// Setup orthographic projection matrix into our constant buffer
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// 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.
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{
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D3D11_MAPPED_SUBRESOURCE mapped_resource;
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if (ctx->Map(bd->pVertexConstantBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mapped_resource) != S_OK)
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return;
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VERTEX_CONSTANT_BUFFER* constant_buffer = (VERTEX_CONSTANT_BUFFER*)mapped_resource.pData;
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float L = draw_data->DisplayPos.x;
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float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x;
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float T = draw_data->DisplayPos.y;
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float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y;
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float mvp[4][4] =
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{
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{ 2.0f/(R-L), 0.0f, 0.0f, 0.0f },
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{ 0.0f, 2.0f/(T-B), 0.0f, 0.0f },
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{ 0.0f, 0.0f, 0.5f, 0.0f },
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{ (R+L)/(L-R), (T+B)/(B-T), 0.5f, 1.0f },
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};
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memcpy(&constant_buffer->mvp, mvp, sizeof(mvp));
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ctx->Unmap(bd->pVertexConstantBuffer, 0);
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}
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// Backup DX state that will be modified to restore it afterwards (unfortunately this is very ugly looking and verbose. Close your eyes!)
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struct BACKUP_DX11_STATE
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{
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UINT ScissorRectsCount, ViewportsCount;
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D3D11_RECT ScissorRects[D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE];
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D3D11_VIEWPORT Viewports[D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE];
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ID3D11RasterizerState* RS;
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ID3D11BlendState* BlendState;
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FLOAT BlendFactor[4];
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UINT SampleMask;
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UINT StencilRef;
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ID3D11DepthStencilState* DepthStencilState;
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ID3D11ShaderResourceView* PSShaderResource;
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ID3D11SamplerState* PSSampler;
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ID3D11PixelShader* PS;
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ID3D11VertexShader* VS;
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ID3D11GeometryShader* GS;
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UINT PSInstancesCount, VSInstancesCount, GSInstancesCount;
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ID3D11ClassInstance *PSInstances[256], *VSInstances[256], *GSInstances[256]; // 256 is max according to PSSetShader documentation
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D3D11_PRIMITIVE_TOPOLOGY PrimitiveTopology;
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ID3D11Buffer* IndexBuffer, *VertexBuffer, *VSConstantBuffer;
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UINT IndexBufferOffset, VertexBufferStride, VertexBufferOffset;
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DXGI_FORMAT IndexBufferFormat;
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ID3D11InputLayout* InputLayout;
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};
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BACKUP_DX11_STATE old = {};
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old.ScissorRectsCount = old.ViewportsCount = D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE;
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ctx->RSGetScissorRects(&old.ScissorRectsCount, old.ScissorRects);
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ctx->RSGetViewports(&old.ViewportsCount, old.Viewports);
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ctx->RSGetState(&old.RS);
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ctx->OMGetBlendState(&old.BlendState, old.BlendFactor, &old.SampleMask);
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ctx->OMGetDepthStencilState(&old.DepthStencilState, &old.StencilRef);
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ctx->PSGetShaderResources(0, 1, &old.PSShaderResource);
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ctx->PSGetSamplers(0, 1, &old.PSSampler);
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old.PSInstancesCount = old.VSInstancesCount = old.GSInstancesCount = 256;
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ctx->PSGetShader(&old.PS, old.PSInstances, &old.PSInstancesCount);
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ctx->VSGetShader(&old.VS, old.VSInstances, &old.VSInstancesCount);
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ctx->VSGetConstantBuffers(0, 1, &old.VSConstantBuffer);
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ctx->GSGetShader(&old.GS, old.GSInstances, &old.GSInstancesCount);
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ctx->IAGetPrimitiveTopology(&old.PrimitiveTopology);
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ctx->IAGetIndexBuffer(&old.IndexBuffer, &old.IndexBufferFormat, &old.IndexBufferOffset);
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ctx->IAGetVertexBuffers(0, 1, &old.VertexBuffer, &old.VertexBufferStride, &old.VertexBufferOffset);
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ctx->IAGetInputLayout(&old.InputLayout);
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// Setup desired DX state
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ImGui_ImplDX11_SetupRenderState(draw_data, ctx);
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// Render command lists
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// (Because we merged all buffers into a single one, we maintain our own offset into them)
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int global_idx_offset = 0;
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int global_vtx_offset = 0;
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ImVec2 clip_off = draw_data->DisplayPos;
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for (int n = 0; n < draw_data->CmdListsCount; n++)
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{
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const ImDrawList* cmd_list = draw_data->CmdLists[n];
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for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
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{
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const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
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if (pcmd->UserCallback != NULL)
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{
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// User callback, registered via ImDrawList::AddCallback()
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// (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
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if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
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ImGui_ImplDX11_SetupRenderState(draw_data, ctx);
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else
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pcmd->UserCallback(cmd_list, pcmd);
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}
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else
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{
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// Project scissor/clipping rectangles into framebuffer space
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ImVec2 clip_min(pcmd->ClipRect.x - clip_off.x, pcmd->ClipRect.y - clip_off.y);
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ImVec2 clip_max(pcmd->ClipRect.z - clip_off.x, pcmd->ClipRect.w - clip_off.y);
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if (clip_max.x < clip_min.x || clip_max.y < clip_min.y)
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continue;
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// Apply scissor/clipping rectangle
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const D3D11_RECT r = { (LONG)clip_min.x, (LONG)clip_min.y, (LONG)clip_max.x, (LONG)clip_max.y };
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ctx->RSSetScissorRects(1, &r);
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// Bind texture, Draw
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ID3D11ShaderResourceView* texture_srv = (ID3D11ShaderResourceView*)pcmd->GetTexID();
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ctx->PSSetShaderResources(0, 1, &texture_srv);
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ctx->DrawIndexed(pcmd->ElemCount, pcmd->IdxOffset + global_idx_offset, pcmd->VtxOffset + global_vtx_offset);
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}
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}
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global_idx_offset += cmd_list->IdxBuffer.Size;
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global_vtx_offset += cmd_list->VtxBuffer.Size;
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}
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// Restore modified DX state
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ctx->RSSetScissorRects(old.ScissorRectsCount, old.ScissorRects);
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ctx->RSSetViewports(old.ViewportsCount, old.Viewports);
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ctx->RSSetState(old.RS); if (old.RS) old.RS->Release();
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ctx->OMSetBlendState(old.BlendState, old.BlendFactor, old.SampleMask); if (old.BlendState) old.BlendState->Release();
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ctx->OMSetDepthStencilState(old.DepthStencilState, old.StencilRef); if (old.DepthStencilState) old.DepthStencilState->Release();
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ctx->PSSetShaderResources(0, 1, &old.PSShaderResource); if (old.PSShaderResource) old.PSShaderResource->Release();
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ctx->PSSetSamplers(0, 1, &old.PSSampler); if (old.PSSampler) old.PSSampler->Release();
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ctx->PSSetShader(old.PS, old.PSInstances, old.PSInstancesCount); if (old.PS) old.PS->Release();
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for (UINT i = 0; i < old.PSInstancesCount; i++) if (old.PSInstances[i]) old.PSInstances[i]->Release();
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ctx->VSSetShader(old.VS, old.VSInstances, old.VSInstancesCount); if (old.VS) old.VS->Release();
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ctx->VSSetConstantBuffers(0, 1, &old.VSConstantBuffer); if (old.VSConstantBuffer) old.VSConstantBuffer->Release();
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ctx->GSSetShader(old.GS, old.GSInstances, old.GSInstancesCount); if (old.GS) old.GS->Release();
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for (UINT i = 0; i < old.VSInstancesCount; i++) if (old.VSInstances[i]) old.VSInstances[i]->Release();
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ctx->IASetPrimitiveTopology(old.PrimitiveTopology);
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ctx->IASetIndexBuffer(old.IndexBuffer, old.IndexBufferFormat, old.IndexBufferOffset); if (old.IndexBuffer) old.IndexBuffer->Release();
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ctx->IASetVertexBuffers(0, 1, &old.VertexBuffer, &old.VertexBufferStride, &old.VertexBufferOffset); if (old.VertexBuffer) old.VertexBuffer->Release();
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ctx->IASetInputLayout(old.InputLayout); if (old.InputLayout) old.InputLayout->Release();
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}
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static void ImGui_ImplDX11_CreateFontsTexture()
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{
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// Build texture atlas
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ImGuiIO& io = ImGui::GetIO();
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ImGui_ImplDX11_Data* bd = ImGui_ImplDX11_GetBackendData();
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unsigned char* pixels;
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int width, height;
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io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
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// Upload texture to graphics system
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{
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D3D11_TEXTURE2D_DESC desc;
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ZeroMemory(&desc, sizeof(desc));
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desc.Width = width;
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desc.Height = height;
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desc.MipLevels = 1;
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desc.ArraySize = 1;
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desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
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desc.SampleDesc.Count = 1;
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desc.Usage = D3D11_USAGE_DEFAULT;
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desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
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desc.CPUAccessFlags = 0;
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ID3D11Texture2D* pTexture = NULL;
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D3D11_SUBRESOURCE_DATA subResource;
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subResource.pSysMem = pixels;
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subResource.SysMemPitch = desc.Width * 4;
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subResource.SysMemSlicePitch = 0;
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bd->pd3dDevice->CreateTexture2D(&desc, &subResource, &pTexture);
|
||||
IM_ASSERT(pTexture != NULL);
|
||||
|
||||
// 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
|
||||
{
|
||||
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;
|
||||
bd->pd3dDevice->CreateSamplerState(&desc, &bd->pFontSampler);
|
||||
}
|
||||
}
|
||||
|
||||
bool ImGui_ImplDX11_CreateDeviceObjects()
|
||||
{
|
||||
ImGui_ImplDX11_Data* bd = ImGui_ImplDX11_GetBackendData();
|
||||
if (!bd->pd3dDevice)
|
||||
return false;
|
||||
if (bd->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 (bd->pd3dDevice->CreateVertexShader(vertexShaderBlob->GetBufferPointer(), vertexShaderBlob->GetBufferSize(), NULL, &bd->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 (bd->pd3dDevice->CreateInputLayout(local_layout, 3, vertexShaderBlob->GetBufferPointer(), vertexShaderBlob->GetBufferSize(), &bd->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;
|
||||
bd->pd3dDevice->CreateBuffer(&desc, NULL, &bd->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 (bd->pd3dDevice->CreatePixelShader(pixelShaderBlob->GetBufferPointer(), pixelShaderBlob->GetBufferSize(), NULL, &bd->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_ONE;
|
||||
desc.RenderTarget[0].DestBlendAlpha = D3D11_BLEND_INV_SRC_ALPHA;
|
||||
desc.RenderTarget[0].BlendOpAlpha = D3D11_BLEND_OP_ADD;
|
||||
desc.RenderTarget[0].RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL;
|
||||
bd->pd3dDevice->CreateBlendState(&desc, &bd->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;
|
||||
bd->pd3dDevice->CreateRasterizerState(&desc, &bd->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;
|
||||
bd->pd3dDevice->CreateDepthStencilState(&desc, &bd->pDepthStencilState);
|
||||
}
|
||||
|
||||
ImGui_ImplDX11_CreateFontsTexture();
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void ImGui_ImplDX11_InvalidateDeviceObjects()
|
||||
{
|
||||
ImGui_ImplDX11_Data* bd = ImGui_ImplDX11_GetBackendData();
|
||||
if (!bd->pd3dDevice)
|
||||
return;
|
||||
|
||||
if (bd->pFontSampler) { bd->pFontSampler->Release(); bd->pFontSampler = NULL; }
|
||||
if (bd->pFontTextureView) { bd->pFontTextureView->Release(); bd->pFontTextureView = NULL; ImGui::GetIO().Fonts->SetTexID(NULL); } // We copied data->pFontTextureView to io.Fonts->TexID so let's clear that as well.
|
||||
if (bd->pIB) { bd->pIB->Release(); bd->pIB = NULL; }
|
||||
if (bd->pVB) { bd->pVB->Release(); bd->pVB = NULL; }
|
||||
if (bd->pBlendState) { bd->pBlendState->Release(); bd->pBlendState = NULL; }
|
||||
if (bd->pDepthStencilState) { bd->pDepthStencilState->Release(); bd->pDepthStencilState = NULL; }
|
||||
if (bd->pRasterizerState) { bd->pRasterizerState->Release(); bd->pRasterizerState = NULL; }
|
||||
if (bd->pPixelShader) { bd->pPixelShader->Release(); bd->pPixelShader = NULL; }
|
||||
if (bd->pVertexConstantBuffer) { bd->pVertexConstantBuffer->Release(); bd->pVertexConstantBuffer = NULL; }
|
||||
if (bd->pInputLayout) { bd->pInputLayout->Release(); bd->pInputLayout = NULL; }
|
||||
if (bd->pVertexShader) { bd->pVertexShader->Release(); bd->pVertexShader = NULL; }
|
||||
}
|
||||
|
||||
bool ImGui_ImplDX11_Init(ID3D11Device* device, ID3D11DeviceContext* device_context)
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
IM_ASSERT(io.BackendRendererUserData == NULL && "Already initialized a renderer backend!");
|
||||
|
||||
// Setup backend capabilities flags
|
||||
ImGui_ImplDX11_Data* bd = IM_NEW(ImGui_ImplDX11_Data)();
|
||||
io.BackendRendererUserData = (void*)bd;
|
||||
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)
|
||||
{
|
||||
bd->pd3dDevice = device;
|
||||
bd->pd3dDeviceContext = device_context;
|
||||
bd->pFactory = pFactory;
|
||||
}
|
||||
if (pDXGIDevice) pDXGIDevice->Release();
|
||||
if (pDXGIAdapter) pDXGIAdapter->Release();
|
||||
bd->pd3dDevice->AddRef();
|
||||
bd->pd3dDeviceContext->AddRef();
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void ImGui_ImplDX11_Shutdown()
|
||||
{
|
||||
ImGui_ImplDX11_Data* bd = ImGui_ImplDX11_GetBackendData();
|
||||
IM_ASSERT(bd != NULL && "No renderer backend to shutdown, or already shutdown?");
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
|
||||
ImGui_ImplDX11_InvalidateDeviceObjects();
|
||||
if (bd->pFactory) { bd->pFactory->Release(); }
|
||||
if (bd->pd3dDevice) { bd->pd3dDevice->Release(); }
|
||||
if (bd->pd3dDeviceContext) { bd->pd3dDeviceContext->Release(); }
|
||||
io.BackendRendererName = NULL;
|
||||
io.BackendRendererUserData = NULL;
|
||||
IM_DELETE(bd);
|
||||
}
|
||||
|
||||
void ImGui_ImplDX11_NewFrame()
|
||||
{
|
||||
ImGui_ImplDX11_Data* bd = ImGui_ImplDX11_GetBackendData();
|
||||
IM_ASSERT(bd != NULL && "Did you call ImGui_ImplDX11_Init()?");
|
||||
|
||||
if (!bd->pFontSampler)
|
||||
ImGui_ImplDX11_CreateDeviceObjects();
|
||||
}
|
||||
@ -0,0 +1,26 @@
|
||||
// dear imgui: Renderer Backend for DirectX11
|
||||
// This needs to be used along with a Platform Backend (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 use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
|
||||
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
|
||||
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
|
||||
// Read online: https://github.com/ocornut/imgui/tree/master/docs
|
||||
|
||||
#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();
|
||||
@ -1,283 +0,0 @@
|
||||
// dear imgui: Renderer Backend for DirectX9
|
||||
// This needs to be used along with a Platform Backend (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 examples/ folder for examples of using this.
|
||||
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
|
||||
// Read online: https://github.com/ocornut/imgui/tree/master/docs
|
||||
|
||||
// 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.
|
||||
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 backend 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();
|
||||
}
|
||||
@ -1,24 +0,0 @@
|
||||
// dear imgui: Renderer Backend for DirectX9
|
||||
// This needs to be used along with a Platform Backend (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 examples/ folder for examples of using this.
|
||||
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
|
||||
// Read online: https://github.com/ocornut/imgui/tree/master/docs
|
||||
|
||||
#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();
|
||||
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Loading…
Reference in New Issue