494 lines
22 KiB
C++
494 lines
22 KiB
C++
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// dear imgui: Renderer for Easy2D (DirectX11)
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#include "libs/ImGui/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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// DirectX data
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static ID3D11Device* g_pd3dDevice = NULL;
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static ID3D11DeviceContext* g_pd3dDeviceContext = NULL;
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static IDXGIFactory* g_pFactory = NULL;
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static ID3D11Buffer* g_pVB = NULL;
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static ID3D11Buffer* g_pIB = NULL;
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static ID3D10Blob* g_pVertexShaderBlob = NULL;
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static ID3D11VertexShader* g_pVertexShader = NULL;
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static ID3D11InputLayout* g_pInputLayout = NULL;
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static ID3D11Buffer* g_pVertexConstantBuffer = NULL;
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static ID3D10Blob* g_pPixelShaderBlob = NULL;
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static ID3D11PixelShader* g_pPixelShader = NULL;
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static ID3D11SamplerState* g_pFontSampler = NULL;
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static ID3D11ShaderResourceView*g_pFontTextureView = NULL;
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static ID3D11RasterizerState* g_pRasterizerState = NULL;
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static ID3D11BlendState* g_pBlendState = NULL;
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static ID3D11DepthStencilState* g_pDepthStencilState = NULL;
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static int g_VertexBufferSize = 5000, g_IndexBufferSize = 10000;
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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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// Render function
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// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
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void ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data)
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{
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ID3D11DeviceContext* ctx = g_pd3dDeviceContext;
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// Create and grow vertex/index buffers if needed
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if (!g_pVB || g_VertexBufferSize < draw_data->TotalVtxCount)
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{
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if (g_pVB) { g_pVB->Release(); g_pVB = NULL; }
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g_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 = g_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 (g_pd3dDevice->CreateBuffer(&desc, NULL, &g_pVB) < 0)
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return;
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}
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if (!g_pIB || g_IndexBufferSize < draw_data->TotalIdxCount)
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{
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if (g_pIB) { g_pIB->Release(); g_pIB = NULL; }
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g_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 = g_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 (g_pd3dDevice->CreateBuffer(&desc, NULL, &g_pIB) < 0)
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return;
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}
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// Copy and convert all vertices into a single contiguous buffer
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D3D11_MAPPED_SUBRESOURCE vtx_resource, idx_resource;
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if (ctx->Map(g_pVB, 0, D3D11_MAP_WRITE_DISCARD, 0, &vtx_resource) != S_OK)
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return;
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if (ctx->Map(g_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(g_pVB, 0);
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ctx->Unmap(g_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).
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{
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D3D11_MAPPED_SUBRESOURCE mapped_resource;
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if (ctx->Map(g_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(g_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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UINT PSInstancesCount, VSInstancesCount;
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ID3D11ClassInstance* PSInstances[256], *VSInstances[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 = 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->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 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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// Bind 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(g_pInputLayout);
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ctx->IASetVertexBuffers(0, 1, &g_pVB, &stride, &offset);
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ctx->IASetIndexBuffer(g_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(g_pVertexShader, NULL, 0);
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ctx->VSSetConstantBuffers(0, 1, &g_pVertexConstantBuffer);
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ctx->PSSetShader(g_pPixelShader, NULL, 0);
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ctx->PSSetSamplers(0, 1, &g_pFontSampler);
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// Setup render state
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const float blend_factor[4] = { 0.f, 0.f, 0.f, 0.f };
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ctx->OMSetBlendState(g_pBlendState, blend_factor, 0xffffffff);
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ctx->OMSetDepthStencilState(g_pDepthStencilState, 0);
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ctx->RSSetState(g_pRasterizerState);
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// Render command lists
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int vtx_offset = 0;
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int idx_offset = 0;
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ImVec2 pos = 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)
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{
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// User callback (registered via ImDrawList::AddCallback)
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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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// Apply scissor/clipping rectangle
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const D3D11_RECT r = { (LONG)(pcmd->ClipRect.x - pos.x), (LONG)(pcmd->ClipRect.y - pos.y), (LONG)(pcmd->ClipRect.z - pos.x), (LONG)(pcmd->ClipRect.w - pos.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->TextureId;
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ctx->PSSetShaderResources(0, 1, &texture_srv);
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ctx->DrawIndexed(pcmd->ElemCount, idx_offset, vtx_offset);
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}
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idx_offset += pcmd->ElemCount;
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}
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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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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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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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g_pd3dDevice->CreateTexture2D(&desc, &subResource, &pTexture);
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// Create texture view
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D3D11_SHADER_RESOURCE_VIEW_DESC srvDesc;
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ZeroMemory(&srvDesc, sizeof(srvDesc));
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srvDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
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srvDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
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srvDesc.Texture2D.MipLevels = desc.MipLevels;
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srvDesc.Texture2D.MostDetailedMip = 0;
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g_pd3dDevice->CreateShaderResourceView(pTexture, &srvDesc, &g_pFontTextureView);
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pTexture->Release();
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}
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// Store our identifier
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io.Fonts->TexID = (ImTextureID)g_pFontTextureView;
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// Create texture sampler
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{
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D3D11_SAMPLER_DESC desc;
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ZeroMemory(&desc, sizeof(desc));
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desc.Filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR;
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desc.AddressU = D3D11_TEXTURE_ADDRESS_WRAP;
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desc.AddressV = D3D11_TEXTURE_ADDRESS_WRAP;
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desc.AddressW = D3D11_TEXTURE_ADDRESS_WRAP;
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desc.MipLODBias = 0.f;
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desc.ComparisonFunc = D3D11_COMPARISON_ALWAYS;
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desc.MinLOD = 0.f;
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desc.MaxLOD = 0.f;
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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;\
|
||
|
|
}";
|
||
|
|
|
||
|
|
D3DCompile(vertexShader, strlen(vertexShader), NULL, NULL, NULL, "main", "vs_4_0", 0, 0, &g_pVertexShaderBlob, NULL);
|
||
|
|
if (g_pVertexShaderBlob == NULL) // NB: Pass ID3D10Blob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
|
||
|
|
return false;
|
||
|
|
if (g_pd3dDevice->CreateVertexShader((DWORD*)g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize(), NULL, &g_pVertexShader) != S_OK)
|
||
|
|
return false;
|
||
|
|
|
||
|
|
// Create the input layout
|
||
|
|
D3D11_INPUT_ELEMENT_DESC local_layout[] =
|
||
|
|
{
|
||
|
|
{ "POSITION", 0, DXGI_FORMAT_R32G32_FLOAT, 0, (size_t)(&((ImDrawVert*)0)->pos), D3D11_INPUT_PER_VERTEX_DATA, 0 },
|
||
|
|
{ "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, (size_t)(&((ImDrawVert*)0)->uv), D3D11_INPUT_PER_VERTEX_DATA, 0 },
|
||
|
|
{ "COLOR", 0, DXGI_FORMAT_R8G8B8A8_UNORM, 0, (size_t)(&((ImDrawVert*)0)->col), D3D11_INPUT_PER_VERTEX_DATA, 0 },
|
||
|
|
};
|
||
|
|
if (g_pd3dDevice->CreateInputLayout(local_layout, 3, g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize(), &g_pInputLayout) != S_OK)
|
||
|
|
return false;
|
||
|
|
|
||
|
|
// 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; \
|
||
|
|
}";
|
||
|
|
|
||
|
|
D3DCompile(pixelShader, strlen(pixelShader), NULL, NULL, NULL, "main", "ps_4_0", 0, 0, &g_pPixelShaderBlob, NULL);
|
||
|
|
if (g_pPixelShaderBlob == NULL) // NB: Pass ID3D10Blob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
|
||
|
|
return false;
|
||
|
|
if (g_pd3dDevice->CreatePixelShader((DWORD*)g_pPixelShaderBlob->GetBufferPointer(), g_pPixelShaderBlob->GetBufferSize(), NULL, &g_pPixelShader) != S_OK)
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// 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_pPixelShaderBlob) { g_pPixelShaderBlob->Release(); g_pPixelShaderBlob = 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; }
|
||
|
|
if (g_pVertexShaderBlob) { g_pVertexShaderBlob->Release(); g_pVertexShaderBlob = NULL; }
|
||
|
|
}
|
||
|
|
|
||
|
|
bool ImGui_ImplDX11_Init(ID3D11Device* device, ID3D11DeviceContext* device_context)
|
||
|
|
{
|
||
|
|
ImGuiIO& io = ImGui::GetIO();
|
||
|
|
io.BackendRendererName = "imgui_impl_dx11";
|
||
|
|
|
||
|
|
// 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();
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
void ImGui_ImplDX11_Shutdown()
|
||
|
|
{
|
||
|
|
ImGui_ImplDX11_InvalidateDeviceObjects();
|
||
|
|
if (g_pFactory) { g_pFactory->Release(); g_pFactory = NULL; }
|
||
|
|
g_pd3dDevice = NULL;
|
||
|
|
g_pd3dDeviceContext = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
void ImGui_ImplDX11_NewFrame()
|
||
|
|
{
|
||
|
|
if (!g_pFontSampler)
|
||
|
|
ImGui_ImplDX11_CreateDeviceObjects();
|
||
|
|
}
|