diff options
| author | Bryan Galdrikian <[email protected]> | 2018-05-31 11:36:08 -0700 |
|---|---|---|
| committer | Bryan Galdrikian <[email protected]> | 2018-05-31 11:36:08 -0700 |
| commit | 7115f60b91b5717d90f643fd692010905c7004db (patch) | |
| tree | effd68c6978751c517d54c2f2bb5bb6e7dc93e18 /samples/SampleBase/ui/imgui_impl_dx11.cpp | |
| parent | Updating BlastTool zip (diff) | |
| download | blast-7115f60b91b5717d90f643fd692010905c7004db.tar.xz blast-7115f60b91b5717d90f643fd692010905c7004db.zip | |
Blast 1.1.3. See docs/release_notes.txt.v1.1.3_rc1
Diffstat (limited to 'samples/SampleBase/ui/imgui_impl_dx11.cpp')
| -rwxr-xr-x[-rw-r--r--] | samples/SampleBase/ui/imgui_impl_dx11.cpp | 1166 |
1 files changed, 583 insertions, 583 deletions
diff --git a/samples/SampleBase/ui/imgui_impl_dx11.cpp b/samples/SampleBase/ui/imgui_impl_dx11.cpp index 11f66f0..42d0892 100644..100755 --- a/samples/SampleBase/ui/imgui_impl_dx11.cpp +++ b/samples/SampleBase/ui/imgui_impl_dx11.cpp @@ -1,583 +1,583 @@ -// ImGui Win32 + DirectX11 binding -// In this binding, ImTextureID is used to store a 'ID3D11ShaderResourceView*' texture identifier. Read the FAQ about ImTextureID in imgui.cpp. - -// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this. -// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown(). -// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp. -// https://github.com/ocornut/imgui - -#include <imgui.h> -#include "imgui_impl_dx11.h" - -// DirectX -#include <d3d11.h> -#include <d3dcompiler.h> -#define DIRECTINPUT_VERSION 0x0800 -#include <dinput.h> - -// Data -static INT64 g_Time = 0; -static INT64 g_TicksPerSecond = 0; - -static HWND g_hWnd = 0; -static ID3D11Device* g_pd3dDevice = NULL; -static ID3D11DeviceContext* g_pd3dDeviceContext = NULL; -static ID3D11Buffer* g_pVB = NULL; -static ID3D11Buffer* g_pIB = NULL; -static ID3D10Blob * g_pVertexShaderBlob = NULL; -static ID3D11VertexShader* g_pVertexShader = NULL; -static ID3D11InputLayout* g_pInputLayout = NULL; -static ID3D11Buffer* g_pVertexConstantBuffer = NULL; -static ID3D10Blob * g_pPixelShaderBlob = NULL; -static ID3D11PixelShader* g_pPixelShader = NULL; -static ID3D11SamplerState* g_pFontSampler = NULL; -static ID3D11ShaderResourceView*g_pFontTextureView = NULL; -static ID3D11RasterizerState* g_pRasterizerState = NULL; -static ID3D11BlendState* g_pBlendState = NULL; -static ID3D11DepthStencilState* g_pDepthStencilState = NULL; -static int g_VertexBufferSize = 5000, g_IndexBufferSize = 10000; - -struct VERTEX_CONSTANT_BUFFER -{ - float mvp[4][4]; -}; - -// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure) -// If text or lines are blurry when integrating ImGui in your engine: -// - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f) -void ImGui_ImplDX11_RenderDrawLists(ImDrawData* draw_data) -{ - ID3D11DeviceContext* ctx = g_pd3dDeviceContext; - - // Create and grow vertex/index buffers if needed - if (!g_pVB || g_VertexBufferSize < draw_data->TotalVtxCount) - { - if (g_pVB) { g_pVB->Release(); g_pVB = NULL; } - g_VertexBufferSize = draw_data->TotalVtxCount + 5000; - D3D11_BUFFER_DESC desc; - memset(&desc, 0, sizeof(D3D11_BUFFER_DESC)); - desc.Usage = D3D11_USAGE_DYNAMIC; - desc.ByteWidth = g_VertexBufferSize * sizeof(ImDrawVert); - desc.BindFlags = D3D11_BIND_VERTEX_BUFFER; - desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE; - desc.MiscFlags = 0; - if (g_pd3dDevice->CreateBuffer(&desc, NULL, &g_pVB) < 0) - return; - } - if (!g_pIB || g_IndexBufferSize < draw_data->TotalIdxCount) - { - if (g_pIB) { g_pIB->Release(); g_pIB = NULL; } - g_IndexBufferSize = draw_data->TotalIdxCount + 10000; - D3D11_BUFFER_DESC desc; - memset(&desc, 0, sizeof(D3D11_BUFFER_DESC)); - desc.Usage = D3D11_USAGE_DYNAMIC; - desc.ByteWidth = g_IndexBufferSize * sizeof(ImDrawIdx); - desc.BindFlags = D3D11_BIND_INDEX_BUFFER; - desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE; - if (g_pd3dDevice->CreateBuffer(&desc, NULL, &g_pIB) < 0) - return; - } - - // Copy and convert all vertices into a single contiguous buffer - D3D11_MAPPED_SUBRESOURCE vtx_resource, idx_resource; - if (ctx->Map(g_pVB, 0, D3D11_MAP_WRITE_DISCARD, 0, &vtx_resource) != S_OK) - return; - if (ctx->Map(g_pIB, 0, D3D11_MAP_WRITE_DISCARD, 0, &idx_resource) != S_OK) - return; - ImDrawVert* vtx_dst = (ImDrawVert*)vtx_resource.pData; - ImDrawIdx* idx_dst = (ImDrawIdx*)idx_resource.pData; - for (int n = 0; n < draw_data->CmdListsCount; n++) - { - const ImDrawList* cmd_list = draw_data->CmdLists[n]; - memcpy(vtx_dst, &cmd_list->VtxBuffer[0], cmd_list->VtxBuffer.size() * sizeof(ImDrawVert)); - memcpy(idx_dst, &cmd_list->IdxBuffer[0], cmd_list->IdxBuffer.size() * sizeof(ImDrawIdx)); - vtx_dst += cmd_list->VtxBuffer.size(); - idx_dst += cmd_list->IdxBuffer.size(); - } - ctx->Unmap(g_pVB, 0); - ctx->Unmap(g_pIB, 0); - - // Setup orthographic projection matrix into our constant buffer - { - D3D11_MAPPED_SUBRESOURCE mapped_resource; - if (ctx->Map(g_pVertexConstantBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mapped_resource) != S_OK) - return; - VERTEX_CONSTANT_BUFFER* constant_buffer = (VERTEX_CONSTANT_BUFFER*)mapped_resource.pData; - float L = 0.0f; - float R = ImGui::GetIO().DisplaySize.x; - float B = ImGui::GetIO().DisplaySize.y; - float T = 0.0f; - float mvp[4][4] = - { - { 2.0f/(R-L), 0.0f, 0.0f, 0.0f }, - { 0.0f, 2.0f/(T-B), 0.0f, 0.0f }, - { 0.0f, 0.0f, 0.5f, 0.0f }, - { (R+L)/(L-R), (T+B)/(B-T), 0.5f, 1.0f }, - }; - memcpy(&constant_buffer->mvp, mvp, sizeof(mvp)); - ctx->Unmap(g_pVertexConstantBuffer, 0); - } - - // Backup DX state that will be modified to restore it afterwards (unfortunately this is very ugly looking and verbose. Close your eyes!) - struct BACKUP_DX11_STATE - { - UINT ScissorRectsCount, ViewportsCount; - D3D11_RECT ScissorRects[D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE]; - D3D11_VIEWPORT Viewports[D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE]; - ID3D11RasterizerState* RS; - ID3D11BlendState* BlendState; - FLOAT BlendFactor[4]; - UINT SampleMask; - UINT StencilRef; - ID3D11DepthStencilState* DepthStencilState; - ID3D11ShaderResourceView* PSShaderResource; - ID3D11SamplerState* PSSampler; - ID3D11PixelShader* PS; - ID3D11VertexShader* VS; - UINT PSInstancesCount, VSInstancesCount; - ID3D11ClassInstance* PSInstances[256], *VSInstances[256]; // 256 is max according to PSSetShader documentation - D3D11_PRIMITIVE_TOPOLOGY PrimitiveTopology; - ID3D11Buffer* IndexBuffer, *VertexBuffer, *VSConstantBuffer; - UINT IndexBufferOffset, VertexBufferStride, VertexBufferOffset; - DXGI_FORMAT IndexBufferFormat; - ID3D11InputLayout* InputLayout; - }; - BACKUP_DX11_STATE old; - old.ScissorRectsCount = old.ViewportsCount = D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE; - ctx->RSGetScissorRects(&old.ScissorRectsCount, old.ScissorRects); - ctx->RSGetViewports(&old.ViewportsCount, old.Viewports); - ctx->RSGetState(&old.RS); - ctx->OMGetBlendState(&old.BlendState, old.BlendFactor, &old.SampleMask); - ctx->OMGetDepthStencilState(&old.DepthStencilState, &old.StencilRef); - ctx->PSGetShaderResources(0, 1, &old.PSShaderResource); - ctx->PSGetSamplers(0, 1, &old.PSSampler); - old.PSInstancesCount = old.VSInstancesCount = 256; - ctx->PSGetShader(&old.PS, old.PSInstances, &old.PSInstancesCount); - ctx->VSGetShader(&old.VS, old.VSInstances, &old.VSInstancesCount); - ctx->VSGetConstantBuffers(0, 1, &old.VSConstantBuffer); - ctx->IAGetPrimitiveTopology(&old.PrimitiveTopology); - ctx->IAGetIndexBuffer(&old.IndexBuffer, &old.IndexBufferFormat, &old.IndexBufferOffset); - ctx->IAGetVertexBuffers(0, 1, &old.VertexBuffer, &old.VertexBufferStride, &old.VertexBufferOffset); - ctx->IAGetInputLayout(&old.InputLayout); - - // Setup viewport - D3D11_VIEWPORT vp; - memset(&vp, 0, sizeof(D3D11_VIEWPORT)); - vp.Width = ImGui::GetIO().DisplaySize.x; - vp.Height = ImGui::GetIO().DisplaySize.y; - vp.MinDepth = 0.0f; - vp.MaxDepth = 1.0f; - vp.TopLeftX = vp.TopLeftY = 0.0f; - ctx->RSSetViewports(1, &vp); - - // Bind shader and vertex buffers - unsigned int stride = sizeof(ImDrawVert); - unsigned int offset = 0; - ctx->IASetInputLayout(g_pInputLayout); - ctx->IASetVertexBuffers(0, 1, &g_pVB, &stride, &offset); - ctx->IASetIndexBuffer(g_pIB, sizeof(ImDrawIdx) == 2 ? DXGI_FORMAT_R16_UINT : DXGI_FORMAT_R32_UINT, 0); - ctx->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST); - ctx->VSSetShader(g_pVertexShader, NULL, 0); - ctx->VSSetConstantBuffers(0, 1, &g_pVertexConstantBuffer); - ctx->PSSetShader(g_pPixelShader, NULL, 0); - ctx->PSSetSamplers(0, 1, &g_pFontSampler); - - // Setup render state - const float blend_factor[4] = { 0.f, 0.f, 0.f, 0.f }; - ctx->OMSetBlendState(g_pBlendState, blend_factor, 0xffffffff); - ctx->OMSetDepthStencilState(g_pDepthStencilState, 0); - ctx->RSSetState(g_pRasterizerState); - - // Render command lists - int vtx_offset = 0; - int idx_offset = 0; - 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) - { - pcmd->UserCallback(cmd_list, pcmd); - } - else - { - const D3D11_RECT r = { (LONG)pcmd->ClipRect.x, (LONG)pcmd->ClipRect.y, (LONG)pcmd->ClipRect.z, (LONG)pcmd->ClipRect.w }; - ctx->PSSetShaderResources(0, 1, (ID3D11ShaderResourceView**)&pcmd->TextureId); - ctx->RSSetScissorRects(1, &r); - ctx->DrawIndexed(pcmd->ElemCount, idx_offset, vtx_offset); - } - idx_offset += pcmd->ElemCount; - } - vtx_offset += cmd_list->VtxBuffer.size(); - } - - // Restore modified DX state - ctx->RSSetScissorRects(old.ScissorRectsCount, old.ScissorRects); - ctx->RSSetViewports(old.ViewportsCount, old.Viewports); - ctx->RSSetState(old.RS); if (old.RS) old.RS->Release(); - ctx->OMSetBlendState(old.BlendState, old.BlendFactor, old.SampleMask); if (old.BlendState) old.BlendState->Release(); - ctx->OMSetDepthStencilState(old.DepthStencilState, old.StencilRef); if (old.DepthStencilState) old.DepthStencilState->Release(); - ctx->PSSetShaderResources(0, 1, &old.PSShaderResource); if (old.PSShaderResource) old.PSShaderResource->Release(); - ctx->PSSetSamplers(0, 1, &old.PSSampler); if (old.PSSampler) old.PSSampler->Release(); - ctx->PSSetShader(old.PS, old.PSInstances, old.PSInstancesCount); if (old.PS) old.PS->Release(); - for (UINT i = 0; i < old.PSInstancesCount; i++) if (old.PSInstances[i]) old.PSInstances[i]->Release(); - ctx->VSSetShader(old.VS, old.VSInstances, old.VSInstancesCount); if (old.VS) old.VS->Release(); - ctx->VSSetConstantBuffers(0, 1, &old.VSConstantBuffer); if (old.VSConstantBuffer) old.VSConstantBuffer->Release(); - for (UINT i = 0; i < old.VSInstancesCount; i++) if (old.VSInstances[i]) old.VSInstances[i]->Release(); - ctx->IASetPrimitiveTopology(old.PrimitiveTopology); - ctx->IASetIndexBuffer(old.IndexBuffer, old.IndexBufferFormat, old.IndexBufferOffset); if (old.IndexBuffer) old.IndexBuffer->Release(); - ctx->IASetVertexBuffers(0, 1, &old.VertexBuffer, &old.VertexBufferStride, &old.VertexBufferOffset); if (old.VertexBuffer) old.VertexBuffer->Release(); - ctx->IASetInputLayout(old.InputLayout); if (old.InputLayout) old.InputLayout->Release(); -} - -IMGUI_API LRESULT ImGui_ImplDX11_WndProcHandler(HWND, UINT msg, WPARAM wParam, LPARAM lParam) -{ - ImGuiIO& io = ImGui::GetIO(); - switch (msg) - { - case WM_LBUTTONDOWN: - io.MouseDown[0] = true; - return true; - case WM_LBUTTONUP: - io.MouseDown[0] = false; - return true; - case WM_RBUTTONDOWN: - io.MouseDown[1] = true; - return true; - case WM_RBUTTONUP: - io.MouseDown[1] = false; - return true; - case WM_MBUTTONDOWN: - io.MouseDown[2] = true; - return true; - case WM_MBUTTONUP: - io.MouseDown[2] = false; - return true; - case WM_MOUSEWHEEL: - io.MouseWheel += GET_WHEEL_DELTA_WPARAM(wParam) > 0 ? +1.0f : -1.0f; - return true; - case WM_MOUSEMOVE: - io.MousePos.x = (signed short)(lParam); - io.MousePos.y = (signed short)(lParam >> 16); - return true; - case WM_KEYDOWN: - if (wParam < 256) - io.KeysDown[wParam] = 1; - return true; - case WM_KEYUP: - if (wParam < 256) - io.KeysDown[wParam] = 0; - return true; - case WM_CHAR: - // You can also use ToAscii()+GetKeyboardState() to retrieve characters. - if (wParam > 0 && wParam < 0x10000) - io.AddInputCharacter((unsigned short)wParam); - return true; - } - return 0; -} - -static void ImGui_ImplDX11_CreateFontsTexture() -{ - // Build texture atlas - ImGuiIO& io = ImGui::GetIO(); - unsigned char* pixels; - int width, height; - io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); - - // Upload texture to graphics system - { - D3D11_TEXTURE2D_DESC desc; - ZeroMemory(&desc, sizeof(desc)); - desc.Width = width; - desc.Height = height; - desc.MipLevels = 1; - desc.ArraySize = 1; - desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM; - desc.SampleDesc.Count = 1; - desc.Usage = D3D11_USAGE_DEFAULT; - desc.BindFlags = D3D11_BIND_SHADER_RESOURCE; - desc.CPUAccessFlags = 0; - - ID3D11Texture2D *pTexture = NULL; - D3D11_SUBRESOURCE_DATA subResource; - subResource.pSysMem = pixels; - subResource.SysMemPitch = desc.Width * 4; - subResource.SysMemSlicePitch = 0; - g_pd3dDevice->CreateTexture2D(&desc, &subResource, &pTexture); - - // Create texture view - D3D11_SHADER_RESOURCE_VIEW_DESC srvDesc; - ZeroMemory(&srvDesc, sizeof(srvDesc)); - srvDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM; - srvDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D; - srvDesc.Texture2D.MipLevels = desc.MipLevels; - srvDesc.Texture2D.MostDetailedMip = 0; - g_pd3dDevice->CreateShaderResourceView(pTexture, &srvDesc, &g_pFontTextureView); - pTexture->Release(); - } - - // Store our identifier - io.Fonts->TexID = (void *)g_pFontTextureView; - - // Create texture sampler - { - D3D11_SAMPLER_DESC desc; - ZeroMemory(&desc, sizeof(desc)); - desc.Filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR; - desc.AddressU = D3D11_TEXTURE_ADDRESS_WRAP; - desc.AddressV = D3D11_TEXTURE_ADDRESS_WRAP; - desc.AddressW = D3D11_TEXTURE_ADDRESS_WRAP; - desc.MipLODBias = 0.f; - desc.ComparisonFunc = D3D11_COMPARISON_ALWAYS; - desc.MinLOD = 0.f; - desc.MaxLOD = 0.f; - g_pd3dDevice->CreateSamplerState(&desc, &g_pFontSampler); - } -} - -bool ImGui_ImplDX11_CreateDeviceObjects() -{ - if (!g_pd3dDevice) - return false; - if (g_pFontSampler) - ImGui_ImplDX11_InvalidateDeviceObjects(); - - // By using D3DCompile() from <d3dcompiler.h> / d3dcompiler.lib, we introduce a dependency to a given version of d3dcompiler_XX.dll (see D3DCOMPILER_DLL_A) - // If you would like to use this DX11 sample code but remove this dependency you can: - // 1) compile once, save the compiled shader blobs into a file or source code and pass them to CreateVertexShader()/CreatePixelShader() [prefered 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 = 0; } - 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(void* hwnd, ID3D11Device* device, ID3D11DeviceContext* device_context) -{ - g_hWnd = (HWND)hwnd; - g_pd3dDevice = device; - g_pd3dDeviceContext = device_context; - - if (!QueryPerformanceFrequency((LARGE_INTEGER *)&g_TicksPerSecond)) - return false; - if (!QueryPerformanceCounter((LARGE_INTEGER *)&g_Time)) - return false; - - ImGuiIO& io = ImGui::GetIO(); - io.KeyMap[ImGuiKey_Tab] = VK_TAB; // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array that we will update during the application lifetime. - io.KeyMap[ImGuiKey_LeftArrow] = VK_LEFT; - io.KeyMap[ImGuiKey_RightArrow] = VK_RIGHT; - io.KeyMap[ImGuiKey_UpArrow] = VK_UP; - io.KeyMap[ImGuiKey_DownArrow] = VK_DOWN; - io.KeyMap[ImGuiKey_PageUp] = VK_PRIOR; - io.KeyMap[ImGuiKey_PageDown] = VK_NEXT; - io.KeyMap[ImGuiKey_Home] = VK_HOME; - io.KeyMap[ImGuiKey_End] = VK_END; - io.KeyMap[ImGuiKey_Delete] = VK_DELETE; - io.KeyMap[ImGuiKey_Backspace] = VK_BACK; - io.KeyMap[ImGuiKey_Enter] = VK_RETURN; - io.KeyMap[ImGuiKey_Escape] = VK_ESCAPE; - io.KeyMap[ImGuiKey_A] = 'A'; - io.KeyMap[ImGuiKey_C] = 'C'; - io.KeyMap[ImGuiKey_V] = 'V'; - io.KeyMap[ImGuiKey_X] = 'X'; - io.KeyMap[ImGuiKey_Y] = 'Y'; - io.KeyMap[ImGuiKey_Z] = 'Z'; - - io.RenderDrawListsFn = ImGui_ImplDX11_RenderDrawLists; // Alternatively you can set this to NULL and call ImGui::GetDrawData() after ImGui::Render() to get the same ImDrawData pointer. - io.ImeWindowHandle = g_hWnd; - - return true; -} - -void ImGui_ImplDX11_Shutdown() -{ - ImGui_ImplDX11_InvalidateDeviceObjects(); - ImGui::Shutdown(); - g_pd3dDevice = NULL; - g_pd3dDeviceContext = NULL; - g_hWnd = (HWND)0; -} - -void ImGui_ImplDX11_NewFrame() -{ - if (!g_pFontSampler) - ImGui_ImplDX11_CreateDeviceObjects(); - - ImGuiIO& io = ImGui::GetIO(); - - // Setup display size (every frame to accommodate for window resizing) - RECT rect; - GetClientRect(g_hWnd, &rect); - io.DisplaySize = ImVec2((float)(rect.right - rect.left), (float)(rect.bottom - rect.top)); - - // Setup time step - INT64 current_time; - QueryPerformanceCounter((LARGE_INTEGER *)¤t_time); - io.DeltaTime = (float)(current_time - g_Time) / g_TicksPerSecond; - g_Time = current_time; - - // Read keyboard modifiers inputs - io.KeyCtrl = (GetKeyState(VK_CONTROL) & 0x8000) != 0; - io.KeyShift = (GetKeyState(VK_SHIFT) & 0x8000) != 0; - io.KeyAlt = (GetKeyState(VK_MENU) & 0x8000) != 0; - io.KeySuper = false; - // io.KeysDown : filled by WM_KEYDOWN/WM_KEYUP events - // io.MousePos : filled by WM_MOUSEMOVE events - // io.MouseDown : filled by WM_*BUTTON* events - // io.MouseWheel : filled by WM_MOUSEWHEEL events - - // Hide OS mouse cursor if ImGui is drawing it - SetCursor(io.MouseDrawCursor ? NULL : LoadCursor(NULL, IDC_ARROW)); - - // Start the frame - ImGui::NewFrame(); -} +// ImGui Win32 + DirectX11 binding
+// In this binding, ImTextureID is used to store a 'ID3D11ShaderResourceView*' texture identifier. Read the FAQ about ImTextureID in imgui.cpp.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+#include <imgui.h>
+#include "imgui_impl_dx11.h"
+
+// DirectX
+#include <d3d11.h>
+#include <d3dcompiler.h>
+#define DIRECTINPUT_VERSION 0x0800
+#include <dinput.h>
+
+// Data
+static INT64 g_Time = 0;
+static INT64 g_TicksPerSecond = 0;
+
+static HWND g_hWnd = 0;
+static ID3D11Device* g_pd3dDevice = NULL;
+static ID3D11DeviceContext* g_pd3dDeviceContext = NULL;
+static ID3D11Buffer* g_pVB = NULL;
+static ID3D11Buffer* g_pIB = NULL;
+static ID3D10Blob * g_pVertexShaderBlob = NULL;
+static ID3D11VertexShader* g_pVertexShader = NULL;
+static ID3D11InputLayout* g_pInputLayout = NULL;
+static ID3D11Buffer* g_pVertexConstantBuffer = NULL;
+static ID3D10Blob * g_pPixelShaderBlob = NULL;
+static ID3D11PixelShader* g_pPixelShader = NULL;
+static ID3D11SamplerState* g_pFontSampler = NULL;
+static ID3D11ShaderResourceView*g_pFontTextureView = NULL;
+static ID3D11RasterizerState* g_pRasterizerState = NULL;
+static ID3D11BlendState* g_pBlendState = NULL;
+static ID3D11DepthStencilState* g_pDepthStencilState = NULL;
+static int g_VertexBufferSize = 5000, g_IndexBufferSize = 10000;
+
+struct VERTEX_CONSTANT_BUFFER
+{
+ float mvp[4][4];
+};
+
+// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
+// If text or lines are blurry when integrating ImGui in your engine:
+// - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f)
+void ImGui_ImplDX11_RenderDrawLists(ImDrawData* draw_data)
+{
+ ID3D11DeviceContext* ctx = g_pd3dDeviceContext;
+
+ // Create and grow vertex/index buffers if needed
+ if (!g_pVB || g_VertexBufferSize < draw_data->TotalVtxCount)
+ {
+ if (g_pVB) { g_pVB->Release(); g_pVB = NULL; }
+ g_VertexBufferSize = draw_data->TotalVtxCount + 5000;
+ D3D11_BUFFER_DESC desc;
+ memset(&desc, 0, sizeof(D3D11_BUFFER_DESC));
+ desc.Usage = D3D11_USAGE_DYNAMIC;
+ desc.ByteWidth = g_VertexBufferSize * sizeof(ImDrawVert);
+ desc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
+ desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
+ desc.MiscFlags = 0;
+ if (g_pd3dDevice->CreateBuffer(&desc, NULL, &g_pVB) < 0)
+ return;
+ }
+ if (!g_pIB || g_IndexBufferSize < draw_data->TotalIdxCount)
+ {
+ if (g_pIB) { g_pIB->Release(); g_pIB = NULL; }
+ g_IndexBufferSize = draw_data->TotalIdxCount + 10000;
+ D3D11_BUFFER_DESC desc;
+ memset(&desc, 0, sizeof(D3D11_BUFFER_DESC));
+ desc.Usage = D3D11_USAGE_DYNAMIC;
+ desc.ByteWidth = g_IndexBufferSize * sizeof(ImDrawIdx);
+ desc.BindFlags = D3D11_BIND_INDEX_BUFFER;
+ desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
+ if (g_pd3dDevice->CreateBuffer(&desc, NULL, &g_pIB) < 0)
+ return;
+ }
+
+ // Copy and convert all vertices into a single contiguous buffer
+ D3D11_MAPPED_SUBRESOURCE vtx_resource, idx_resource;
+ if (ctx->Map(g_pVB, 0, D3D11_MAP_WRITE_DISCARD, 0, &vtx_resource) != S_OK)
+ return;
+ if (ctx->Map(g_pIB, 0, D3D11_MAP_WRITE_DISCARD, 0, &idx_resource) != S_OK)
+ return;
+ ImDrawVert* vtx_dst = (ImDrawVert*)vtx_resource.pData;
+ ImDrawIdx* idx_dst = (ImDrawIdx*)idx_resource.pData;
+ for (int n = 0; n < draw_data->CmdListsCount; n++)
+ {
+ const ImDrawList* cmd_list = draw_data->CmdLists[n];
+ memcpy(vtx_dst, &cmd_list->VtxBuffer[0], cmd_list->VtxBuffer.size() * sizeof(ImDrawVert));
+ memcpy(idx_dst, &cmd_list->IdxBuffer[0], cmd_list->IdxBuffer.size() * sizeof(ImDrawIdx));
+ vtx_dst += cmd_list->VtxBuffer.size();
+ idx_dst += cmd_list->IdxBuffer.size();
+ }
+ ctx->Unmap(g_pVB, 0);
+ ctx->Unmap(g_pIB, 0);
+
+ // Setup orthographic projection matrix into our constant buffer
+ {
+ D3D11_MAPPED_SUBRESOURCE mapped_resource;
+ if (ctx->Map(g_pVertexConstantBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mapped_resource) != S_OK)
+ return;
+ VERTEX_CONSTANT_BUFFER* constant_buffer = (VERTEX_CONSTANT_BUFFER*)mapped_resource.pData;
+ float L = 0.0f;
+ float R = ImGui::GetIO().DisplaySize.x;
+ float B = ImGui::GetIO().DisplaySize.y;
+ float T = 0.0f;
+ float mvp[4][4] =
+ {
+ { 2.0f/(R-L), 0.0f, 0.0f, 0.0f },
+ { 0.0f, 2.0f/(T-B), 0.0f, 0.0f },
+ { 0.0f, 0.0f, 0.5f, 0.0f },
+ { (R+L)/(L-R), (T+B)/(B-T), 0.5f, 1.0f },
+ };
+ memcpy(&constant_buffer->mvp, mvp, sizeof(mvp));
+ ctx->Unmap(g_pVertexConstantBuffer, 0);
+ }
+
+ // Backup DX state that will be modified to restore it afterwards (unfortunately this is very ugly looking and verbose. Close your eyes!)
+ struct BACKUP_DX11_STATE
+ {
+ UINT ScissorRectsCount, ViewportsCount;
+ D3D11_RECT ScissorRects[D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE];
+ D3D11_VIEWPORT Viewports[D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE];
+ ID3D11RasterizerState* RS;
+ ID3D11BlendState* BlendState;
+ FLOAT BlendFactor[4];
+ UINT SampleMask;
+ UINT StencilRef;
+ ID3D11DepthStencilState* DepthStencilState;
+ ID3D11ShaderResourceView* PSShaderResource;
+ ID3D11SamplerState* PSSampler;
+ ID3D11PixelShader* PS;
+ ID3D11VertexShader* VS;
+ UINT PSInstancesCount, VSInstancesCount;
+ ID3D11ClassInstance* PSInstances[256], *VSInstances[256]; // 256 is max according to PSSetShader documentation
+ D3D11_PRIMITIVE_TOPOLOGY PrimitiveTopology;
+ ID3D11Buffer* IndexBuffer, *VertexBuffer, *VSConstantBuffer;
+ UINT IndexBufferOffset, VertexBufferStride, VertexBufferOffset;
+ DXGI_FORMAT IndexBufferFormat;
+ ID3D11InputLayout* InputLayout;
+ };
+ BACKUP_DX11_STATE old;
+ old.ScissorRectsCount = old.ViewportsCount = D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE;
+ ctx->RSGetScissorRects(&old.ScissorRectsCount, old.ScissorRects);
+ ctx->RSGetViewports(&old.ViewportsCount, old.Viewports);
+ ctx->RSGetState(&old.RS);
+ ctx->OMGetBlendState(&old.BlendState, old.BlendFactor, &old.SampleMask);
+ ctx->OMGetDepthStencilState(&old.DepthStencilState, &old.StencilRef);
+ ctx->PSGetShaderResources(0, 1, &old.PSShaderResource);
+ ctx->PSGetSamplers(0, 1, &old.PSSampler);
+ old.PSInstancesCount = old.VSInstancesCount = 256;
+ ctx->PSGetShader(&old.PS, old.PSInstances, &old.PSInstancesCount);
+ ctx->VSGetShader(&old.VS, old.VSInstances, &old.VSInstancesCount);
+ ctx->VSGetConstantBuffers(0, 1, &old.VSConstantBuffer);
+ ctx->IAGetPrimitiveTopology(&old.PrimitiveTopology);
+ ctx->IAGetIndexBuffer(&old.IndexBuffer, &old.IndexBufferFormat, &old.IndexBufferOffset);
+ ctx->IAGetVertexBuffers(0, 1, &old.VertexBuffer, &old.VertexBufferStride, &old.VertexBufferOffset);
+ ctx->IAGetInputLayout(&old.InputLayout);
+
+ // Setup viewport
+ D3D11_VIEWPORT vp;
+ memset(&vp, 0, sizeof(D3D11_VIEWPORT));
+ vp.Width = ImGui::GetIO().DisplaySize.x;
+ vp.Height = ImGui::GetIO().DisplaySize.y;
+ vp.MinDepth = 0.0f;
+ vp.MaxDepth = 1.0f;
+ vp.TopLeftX = vp.TopLeftY = 0.0f;
+ ctx->RSSetViewports(1, &vp);
+
+ // Bind shader and vertex buffers
+ unsigned int stride = sizeof(ImDrawVert);
+ unsigned int offset = 0;
+ ctx->IASetInputLayout(g_pInputLayout);
+ ctx->IASetVertexBuffers(0, 1, &g_pVB, &stride, &offset);
+ ctx->IASetIndexBuffer(g_pIB, sizeof(ImDrawIdx) == 2 ? DXGI_FORMAT_R16_UINT : DXGI_FORMAT_R32_UINT, 0);
+ ctx->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
+ ctx->VSSetShader(g_pVertexShader, NULL, 0);
+ ctx->VSSetConstantBuffers(0, 1, &g_pVertexConstantBuffer);
+ ctx->PSSetShader(g_pPixelShader, NULL, 0);
+ ctx->PSSetSamplers(0, 1, &g_pFontSampler);
+
+ // Setup render state
+ const float blend_factor[4] = { 0.f, 0.f, 0.f, 0.f };
+ ctx->OMSetBlendState(g_pBlendState, blend_factor, 0xffffffff);
+ ctx->OMSetDepthStencilState(g_pDepthStencilState, 0);
+ ctx->RSSetState(g_pRasterizerState);
+
+ // Render command lists
+ int vtx_offset = 0;
+ int idx_offset = 0;
+ 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)
+ {
+ pcmd->UserCallback(cmd_list, pcmd);
+ }
+ else
+ {
+ const D3D11_RECT r = { (LONG)pcmd->ClipRect.x, (LONG)pcmd->ClipRect.y, (LONG)pcmd->ClipRect.z, (LONG)pcmd->ClipRect.w };
+ ctx->PSSetShaderResources(0, 1, (ID3D11ShaderResourceView**)&pcmd->TextureId);
+ ctx->RSSetScissorRects(1, &r);
+ ctx->DrawIndexed(pcmd->ElemCount, idx_offset, vtx_offset);
+ }
+ idx_offset += pcmd->ElemCount;
+ }
+ vtx_offset += cmd_list->VtxBuffer.size();
+ }
+
+ // Restore modified DX state
+ ctx->RSSetScissorRects(old.ScissorRectsCount, old.ScissorRects);
+ ctx->RSSetViewports(old.ViewportsCount, old.Viewports);
+ ctx->RSSetState(old.RS); if (old.RS) old.RS->Release();
+ ctx->OMSetBlendState(old.BlendState, old.BlendFactor, old.SampleMask); if (old.BlendState) old.BlendState->Release();
+ ctx->OMSetDepthStencilState(old.DepthStencilState, old.StencilRef); if (old.DepthStencilState) old.DepthStencilState->Release();
+ ctx->PSSetShaderResources(0, 1, &old.PSShaderResource); if (old.PSShaderResource) old.PSShaderResource->Release();
+ ctx->PSSetSamplers(0, 1, &old.PSSampler); if (old.PSSampler) old.PSSampler->Release();
+ ctx->PSSetShader(old.PS, old.PSInstances, old.PSInstancesCount); if (old.PS) old.PS->Release();
+ for (UINT i = 0; i < old.PSInstancesCount; i++) if (old.PSInstances[i]) old.PSInstances[i]->Release();
+ ctx->VSSetShader(old.VS, old.VSInstances, old.VSInstancesCount); if (old.VS) old.VS->Release();
+ ctx->VSSetConstantBuffers(0, 1, &old.VSConstantBuffer); if (old.VSConstantBuffer) old.VSConstantBuffer->Release();
+ for (UINT i = 0; i < old.VSInstancesCount; i++) if (old.VSInstances[i]) old.VSInstances[i]->Release();
+ ctx->IASetPrimitiveTopology(old.PrimitiveTopology);
+ ctx->IASetIndexBuffer(old.IndexBuffer, old.IndexBufferFormat, old.IndexBufferOffset); if (old.IndexBuffer) old.IndexBuffer->Release();
+ ctx->IASetVertexBuffers(0, 1, &old.VertexBuffer, &old.VertexBufferStride, &old.VertexBufferOffset); if (old.VertexBuffer) old.VertexBuffer->Release();
+ ctx->IASetInputLayout(old.InputLayout); if (old.InputLayout) old.InputLayout->Release();
+}
+
+IMGUI_API LRESULT ImGui_ImplDX11_WndProcHandler(HWND, UINT msg, WPARAM wParam, LPARAM lParam)
+{
+ ImGuiIO& io = ImGui::GetIO();
+ switch (msg)
+ {
+ case WM_LBUTTONDOWN:
+ io.MouseDown[0] = true;
+ return true;
+ case WM_LBUTTONUP:
+ io.MouseDown[0] = false;
+ return true;
+ case WM_RBUTTONDOWN:
+ io.MouseDown[1] = true;
+ return true;
+ case WM_RBUTTONUP:
+ io.MouseDown[1] = false;
+ return true;
+ case WM_MBUTTONDOWN:
+ io.MouseDown[2] = true;
+ return true;
+ case WM_MBUTTONUP:
+ io.MouseDown[2] = false;
+ return true;
+ case WM_MOUSEWHEEL:
+ io.MouseWheel += GET_WHEEL_DELTA_WPARAM(wParam) > 0 ? +1.0f : -1.0f;
+ return true;
+ case WM_MOUSEMOVE:
+ io.MousePos.x = (signed short)(lParam);
+ io.MousePos.y = (signed short)(lParam >> 16);
+ return true;
+ case WM_KEYDOWN:
+ if (wParam < 256)
+ io.KeysDown[wParam] = 1;
+ return true;
+ case WM_KEYUP:
+ if (wParam < 256)
+ io.KeysDown[wParam] = 0;
+ return true;
+ case WM_CHAR:
+ // You can also use ToAscii()+GetKeyboardState() to retrieve characters.
+ if (wParam > 0 && wParam < 0x10000)
+ io.AddInputCharacter((unsigned short)wParam);
+ return true;
+ }
+ return 0;
+}
+
+static void ImGui_ImplDX11_CreateFontsTexture()
+{
+ // Build texture atlas
+ ImGuiIO& io = ImGui::GetIO();
+ unsigned char* pixels;
+ int width, height;
+ io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
+
+ // Upload texture to graphics system
+ {
+ D3D11_TEXTURE2D_DESC desc;
+ ZeroMemory(&desc, sizeof(desc));
+ desc.Width = width;
+ desc.Height = height;
+ desc.MipLevels = 1;
+ desc.ArraySize = 1;
+ desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+ desc.SampleDesc.Count = 1;
+ desc.Usage = D3D11_USAGE_DEFAULT;
+ desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
+ desc.CPUAccessFlags = 0;
+
+ ID3D11Texture2D *pTexture = NULL;
+ D3D11_SUBRESOURCE_DATA subResource;
+ subResource.pSysMem = pixels;
+ subResource.SysMemPitch = desc.Width * 4;
+ subResource.SysMemSlicePitch = 0;
+ g_pd3dDevice->CreateTexture2D(&desc, &subResource, &pTexture);
+
+ // Create texture view
+ D3D11_SHADER_RESOURCE_VIEW_DESC srvDesc;
+ ZeroMemory(&srvDesc, sizeof(srvDesc));
+ srvDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+ srvDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
+ srvDesc.Texture2D.MipLevels = desc.MipLevels;
+ srvDesc.Texture2D.MostDetailedMip = 0;
+ g_pd3dDevice->CreateShaderResourceView(pTexture, &srvDesc, &g_pFontTextureView);
+ pTexture->Release();
+ }
+
+ // Store our identifier
+ io.Fonts->TexID = (void *)g_pFontTextureView;
+
+ // Create texture sampler
+ {
+ D3D11_SAMPLER_DESC desc;
+ ZeroMemory(&desc, sizeof(desc));
+ desc.Filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR;
+ desc.AddressU = D3D11_TEXTURE_ADDRESS_WRAP;
+ desc.AddressV = D3D11_TEXTURE_ADDRESS_WRAP;
+ desc.AddressW = D3D11_TEXTURE_ADDRESS_WRAP;
+ desc.MipLODBias = 0.f;
+ desc.ComparisonFunc = D3D11_COMPARISON_ALWAYS;
+ desc.MinLOD = 0.f;
+ desc.MaxLOD = 0.f;
+ g_pd3dDevice->CreateSamplerState(&desc, &g_pFontSampler);
+ }
+}
+
+bool ImGui_ImplDX11_CreateDeviceObjects()
+{
+ if (!g_pd3dDevice)
+ return false;
+ if (g_pFontSampler)
+ ImGui_ImplDX11_InvalidateDeviceObjects();
+
+ // By using D3DCompile() from <d3dcompiler.h> / d3dcompiler.lib, we introduce a dependency to a given version of d3dcompiler_XX.dll (see D3DCOMPILER_DLL_A)
+ // If you would like to use this DX11 sample code but remove this dependency you can:
+ // 1) compile once, save the compiled shader blobs into a file or source code and pass them to CreateVertexShader()/CreatePixelShader() [prefered 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 = 0; }
+ 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(void* hwnd, ID3D11Device* device, ID3D11DeviceContext* device_context)
+{
+ g_hWnd = (HWND)hwnd;
+ g_pd3dDevice = device;
+ g_pd3dDeviceContext = device_context;
+
+ if (!QueryPerformanceFrequency((LARGE_INTEGER *)&g_TicksPerSecond))
+ return false;
+ if (!QueryPerformanceCounter((LARGE_INTEGER *)&g_Time))
+ return false;
+
+ ImGuiIO& io = ImGui::GetIO();
+ io.KeyMap[ImGuiKey_Tab] = VK_TAB; // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array that we will update during the application lifetime.
+ io.KeyMap[ImGuiKey_LeftArrow] = VK_LEFT;
+ io.KeyMap[ImGuiKey_RightArrow] = VK_RIGHT;
+ io.KeyMap[ImGuiKey_UpArrow] = VK_UP;
+ io.KeyMap[ImGuiKey_DownArrow] = VK_DOWN;
+ io.KeyMap[ImGuiKey_PageUp] = VK_PRIOR;
+ io.KeyMap[ImGuiKey_PageDown] = VK_NEXT;
+ io.KeyMap[ImGuiKey_Home] = VK_HOME;
+ io.KeyMap[ImGuiKey_End] = VK_END;
+ io.KeyMap[ImGuiKey_Delete] = VK_DELETE;
+ io.KeyMap[ImGuiKey_Backspace] = VK_BACK;
+ io.KeyMap[ImGuiKey_Enter] = VK_RETURN;
+ io.KeyMap[ImGuiKey_Escape] = VK_ESCAPE;
+ io.KeyMap[ImGuiKey_A] = 'A';
+ io.KeyMap[ImGuiKey_C] = 'C';
+ io.KeyMap[ImGuiKey_V] = 'V';
+ io.KeyMap[ImGuiKey_X] = 'X';
+ io.KeyMap[ImGuiKey_Y] = 'Y';
+ io.KeyMap[ImGuiKey_Z] = 'Z';
+
+ io.RenderDrawListsFn = ImGui_ImplDX11_RenderDrawLists; // Alternatively you can set this to NULL and call ImGui::GetDrawData() after ImGui::Render() to get the same ImDrawData pointer.
+ io.ImeWindowHandle = g_hWnd;
+
+ return true;
+}
+
+void ImGui_ImplDX11_Shutdown()
+{
+ ImGui_ImplDX11_InvalidateDeviceObjects();
+ ImGui::Shutdown();
+ g_pd3dDevice = NULL;
+ g_pd3dDeviceContext = NULL;
+ g_hWnd = (HWND)0;
+}
+
+void ImGui_ImplDX11_NewFrame()
+{
+ if (!g_pFontSampler)
+ ImGui_ImplDX11_CreateDeviceObjects();
+
+ ImGuiIO& io = ImGui::GetIO();
+
+ // Setup display size (every frame to accommodate for window resizing)
+ RECT rect;
+ GetClientRect(g_hWnd, &rect);
+ io.DisplaySize = ImVec2((float)(rect.right - rect.left), (float)(rect.bottom - rect.top));
+
+ // Setup time step
+ INT64 current_time;
+ QueryPerformanceCounter((LARGE_INTEGER *)¤t_time);
+ io.DeltaTime = (float)(current_time - g_Time) / g_TicksPerSecond;
+ g_Time = current_time;
+
+ // Read keyboard modifiers inputs
+ io.KeyCtrl = (GetKeyState(VK_CONTROL) & 0x8000) != 0;
+ io.KeyShift = (GetKeyState(VK_SHIFT) & 0x8000) != 0;
+ io.KeyAlt = (GetKeyState(VK_MENU) & 0x8000) != 0;
+ io.KeySuper = false;
+ // io.KeysDown : filled by WM_KEYDOWN/WM_KEYUP events
+ // io.MousePos : filled by WM_MOUSEMOVE events
+ // io.MouseDown : filled by WM_*BUTTON* events
+ // io.MouseWheel : filled by WM_MOUSEWHEEL events
+
+ // Hide OS mouse cursor if ImGui is drawing it
+ SetCursor(io.MouseDrawCursor ? NULL : LoadCursor(NULL, IDC_ARROW));
+
+ // Start the frame
+ ImGui::NewFrame();
+}
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