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@@ -0,0 +1,811 @@
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+// ImGui Win32 + DirectX12 binding
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+// FIXME: 64-bit only for now! (Because sizeof(ImTextureId) == sizeof(void*))
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+
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+// Implemented features:
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+// [X] User texture binding. Use 'D3D12_GPU_DESCRIPTOR_HANDLE' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
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+
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+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
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+// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
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+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
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+// https://github.com/ocornut/imgui
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+
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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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+// 2018-02-22: Merged into master with all Win32 code synchronized to other examples.
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+
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+#include "imgui.h"
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+#include "imgui_impl_dx12.h"
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+
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+// DirectX
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+#include <d3d12.h>
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+#include <d3dcompiler.h>
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+
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+// Win32 data
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+static HWND g_hWnd = 0;
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+static INT64 g_Time = 0;
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+static INT64 g_TicksPerSecond = 0;
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+static ImGuiMouseCursor g_LastMouseCursor = ImGuiMouseCursor_Count_;
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+
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+// DirectX data
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+static ID3D12Device* g_pd3dDevice = NULL;
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+static ID3D12GraphicsCommandList* g_pd3dCommandList = NULL;
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+static ID3D10Blob* g_pVertexShaderBlob = NULL;
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+static ID3D10Blob* g_pPixelShaderBlob = NULL;
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+static ID3D12RootSignature* g_pRootSignature = NULL;
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+static ID3D12PipelineState* g_pPipelineState = NULL;
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+static DXGI_FORMAT g_RTVFormat = DXGI_FORMAT_UNKNOWN;
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+static ID3D12Resource* g_pFontTextureResource = NULL;
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+static D3D12_CPU_DESCRIPTOR_HANDLE g_hFontSrvCpuDescHandle = {};
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+static D3D12_GPU_DESCRIPTOR_HANDLE g_hFontSrvGpuDescHandle = {};
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+
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+struct FrameResources
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+{
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+ ID3D12Resource* IB;
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+ ID3D12Resource* VB;
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+ int VertexBufferSize;
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+ int IndexBufferSize;
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+};
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+static FrameResources* g_pFrameResources = NULL;
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+static UINT g_numFramesInFlight = 0;
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+static UINT g_frameIndex = UINT_MAX;
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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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+
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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_ImplDX12_RenderDrawData(ImDrawData* draw_data)
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+{
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+ // NOTE: I'm assuming that this only get's called once per frame!
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+ // If not, we can't just re-allocate the IB or VB, we'll have to do a proper allocator.
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+ g_frameIndex = g_frameIndex + 1;
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+ FrameResources* frameResources = &g_pFrameResources[g_frameIndex % g_numFramesInFlight];
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+ ID3D12Resource* g_pVB = frameResources->VB;
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+ ID3D12Resource* g_pIB = frameResources->IB;
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+ int g_VertexBufferSize = frameResources->VertexBufferSize;
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+ int g_IndexBufferSize = frameResources->IndexBufferSize;
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+ ID3D12GraphicsCommandList* ctx = g_pd3dCommandList;
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+
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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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+ D3D12_HEAP_PROPERTIES props;
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+ memset(&props, 0, sizeof(D3D12_HEAP_PROPERTIES));
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+ props.Type = D3D12_HEAP_TYPE_UPLOAD;
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+ props.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
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+ props.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
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+ D3D12_RESOURCE_DESC desc;
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+ memset(&desc, 0, sizeof(D3D12_RESOURCE_DESC));
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+ desc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
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+ desc.Width = g_VertexBufferSize * sizeof(ImDrawVert);
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+ desc.Height = 1;
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+ desc.DepthOrArraySize = 1;
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+ desc.MipLevels = 1;
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+ desc.Format = DXGI_FORMAT_UNKNOWN;
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+ desc.SampleDesc.Count = 1;
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+ desc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
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+ desc.Flags = D3D12_RESOURCE_FLAG_NONE;
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+ if (g_pd3dDevice->CreateCommittedResource(&props, D3D12_HEAP_FLAG_NONE,
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+ &desc, D3D12_RESOURCE_STATE_GENERIC_READ, NULL, IID_PPV_ARGS(&g_pVB)) < 0)
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+ return;
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+ frameResources->VB = g_pVB;
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+ frameResources->VertexBufferSize = g_VertexBufferSize;
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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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+ D3D12_HEAP_PROPERTIES props;
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+ memset(&props, 0, sizeof(D3D12_HEAP_PROPERTIES));
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+ props.Type = D3D12_HEAP_TYPE_UPLOAD;
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+ props.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
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+ props.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
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+ D3D12_RESOURCE_DESC desc;
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+ memset(&desc, 0, sizeof(D3D12_RESOURCE_DESC));
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+ desc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
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+ desc.Width = g_IndexBufferSize * sizeof(ImDrawIdx);
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+ desc.Height = 1;
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+ desc.DepthOrArraySize = 1;
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+ desc.MipLevels = 1;
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+ desc.Format = DXGI_FORMAT_UNKNOWN;
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+ desc.SampleDesc.Count = 1;
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+ desc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
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+ desc.Flags = D3D12_RESOURCE_FLAG_NONE;
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+ if (g_pd3dDevice->CreateCommittedResource(&props, D3D12_HEAP_FLAG_NONE,
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+ &desc, D3D12_RESOURCE_STATE_GENERIC_READ, NULL, IID_PPV_ARGS(&g_pIB)) < 0)
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+ return;
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+ frameResources->IB = g_pIB;
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+ frameResources->IndexBufferSize = g_IndexBufferSize;
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+ }
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+
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+ // Copy and convert all vertices into a single contiguous buffer
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+ void* vtx_resource, *idx_resource;
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+ D3D12_RANGE range;
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+ memset(&range, 0, sizeof(D3D12_RANGE));
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+ if (g_pVB->Map(0, &range, &vtx_resource) != S_OK)
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+ return;
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+ if (g_pIB->Map(0, &range, &idx_resource) != S_OK)
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+ return;
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+ ImDrawVert* vtx_dst = (ImDrawVert*)vtx_resource;
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+ ImDrawIdx* idx_dst = (ImDrawIdx*)idx_resource;
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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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+ g_pVB->Unmap(0, &range);
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+ g_pIB->Unmap(0, &range);
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+
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+ // Setup orthographic projection matrix into our constant buffer
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+ VERTEX_CONSTANT_BUFFER vertex_constant_buffer;
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+ {
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+ VERTEX_CONSTANT_BUFFER* constant_buffer = &vertex_constant_buffer;
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+ float L = 0.0f;
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+ float R = ImGui::GetIO().DisplaySize.x;
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+ float B = ImGui::GetIO().DisplaySize.y;
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+ float T = 0.0f;
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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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+ }
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+
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+ // Setup viewport
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+ D3D12_VIEWPORT vp;
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+ memset(&vp, 0, sizeof(D3D12_VIEWPORT));
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+ vp.Width = ImGui::GetIO().DisplaySize.x;
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+ vp.Height = ImGui::GetIO().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 = 0.0f;
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+ ctx->RSSetViewports(1, &vp);
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+
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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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+ D3D12_VERTEX_BUFFER_VIEW vbv;
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+ memset(&vbv, 0, sizeof(D3D12_VERTEX_BUFFER_VIEW));
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+ vbv.BufferLocation = g_pVB->GetGPUVirtualAddress() + offset;
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+ vbv.SizeInBytes = g_VertexBufferSize * stride;
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+ vbv.StrideInBytes = stride;
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+ ctx->IASetVertexBuffers(0, 1, &vbv);
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+ D3D12_INDEX_BUFFER_VIEW ibv;
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+ memset(&ibv, 0, sizeof(D3D12_INDEX_BUFFER_VIEW));
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+ ibv.BufferLocation = g_pIB->GetGPUVirtualAddress();
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+ ibv.SizeInBytes = g_IndexBufferSize * sizeof(ImDrawIdx);
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+ ibv.Format = sizeof(ImDrawIdx) == 2 ? DXGI_FORMAT_R16_UINT : DXGI_FORMAT_R32_UINT;
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+ ctx->IASetIndexBuffer(&ibv);
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+ ctx->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
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+ ctx->SetPipelineState(g_pPipelineState);
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+ ctx->SetGraphicsRootSignature(g_pRootSignature);
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+ ctx->SetGraphicsRoot32BitConstants(0, 16, &vertex_constant_buffer, 0);
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+
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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->OMSetBlendFactor(blend_factor);
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+
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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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+ 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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+ pcmd->UserCallback(cmd_list, pcmd);
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+ }
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+ else
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+ {
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+ const D3D12_RECT r = { (LONG)pcmd->ClipRect.x, (LONG)pcmd->ClipRect.y, (LONG)pcmd->ClipRect.z, (LONG)pcmd->ClipRect.w };
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+ ctx->SetGraphicsRootDescriptorTable(1, *(D3D12_GPU_DESCRIPTOR_HANDLE*)&pcmd->TextureId);
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+ ctx->RSSetScissorRects(1, &r);
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+ ctx->DrawIndexedInstanced(pcmd->ElemCount, 1, idx_offset, vtx_offset, 0);
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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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+}
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+
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+static void ImGui_ImplWin32_UpdateMouseCursor()
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+{
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+ ImGuiIO& io = ImGui::GetIO();
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+ ImGuiMouseCursor imgui_cursor = io.MouseDrawCursor ? ImGuiMouseCursor_None : ImGui::GetMouseCursor();
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+ if (imgui_cursor == ImGuiMouseCursor_None)
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+ {
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+ // Hide OS mouse cursor if imgui is drawing it or if it wants no cursor
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+ ::SetCursor(NULL);
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+ }
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+ else
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+ {
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+ // Hardware cursor type
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+ LPTSTR win32_cursor = IDC_ARROW;
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+ switch (imgui_cursor)
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+ {
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+ case ImGuiMouseCursor_Arrow: win32_cursor = IDC_ARROW; break;
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+ case ImGuiMouseCursor_TextInput: win32_cursor = IDC_IBEAM; break;
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+ case ImGuiMouseCursor_ResizeAll: win32_cursor = IDC_SIZEALL; break;
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+ case ImGuiMouseCursor_ResizeEW: win32_cursor = IDC_SIZEWE; break;
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+ case ImGuiMouseCursor_ResizeNS: win32_cursor = IDC_SIZENS; break;
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+ case ImGuiMouseCursor_ResizeNESW: win32_cursor = IDC_SIZENESW; break;
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+ case ImGuiMouseCursor_ResizeNWSE: win32_cursor = IDC_SIZENWSE; break;
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+ }
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+ ::SetCursor(::LoadCursor(NULL, win32_cursor));
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+ }
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+}
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+
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+// Process Win32 mouse/keyboard inputs.
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+// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
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+// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
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+// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
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+// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
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+// PS: In this Win32 handler, we use the capture API (GetCapture/SetCapture/ReleaseCapture) to be able to read mouse coordinations when dragging mouse outside of our window bounds.
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+// PS: We treat DBLCLK messages as regular mouse down messages, so this code will work on windows classes that have the CS_DBLCLKS flag set. Our own example app code doesn't set this flag.
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+IMGUI_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
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+{
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+ if (ImGui::GetCurrentContext() == NULL)
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+ return 0;
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+
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+ ImGuiIO& io = ImGui::GetIO();
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+ switch (msg)
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+ {
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+ case WM_LBUTTONDOWN: case WM_LBUTTONDBLCLK:
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+ case WM_RBUTTONDOWN: case WM_RBUTTONDBLCLK:
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+ case WM_MBUTTONDOWN: case WM_MBUTTONDBLCLK:
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+ {
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+ int button = 0;
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+ if (msg == WM_LBUTTONDOWN || msg == WM_LBUTTONDBLCLK) button = 0;
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+ if (msg == WM_RBUTTONDOWN || msg == WM_RBUTTONDBLCLK) button = 1;
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+ if (msg == WM_MBUTTONDOWN || msg == WM_MBUTTONDBLCLK) button = 2;
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+ if (!ImGui::IsAnyMouseDown() && ::GetCapture() == NULL)
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+ ::SetCapture(hwnd);
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+ io.MouseDown[button] = true;
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+ return 0;
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+ }
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+ case WM_LBUTTONUP:
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+ case WM_RBUTTONUP:
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+ case WM_MBUTTONUP:
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+ {
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+ int button = 0;
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+ if (msg == WM_LBUTTONUP) button = 0;
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+ if (msg == WM_RBUTTONUP) button = 1;
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+ if (msg == WM_MBUTTONUP) button = 2;
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+ io.MouseDown[button] = false;
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+ if (!ImGui::IsAnyMouseDown() && ::GetCapture() == hwnd)
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+ ::ReleaseCapture();
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+ return 0;
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+ }
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+ case WM_MOUSEWHEEL:
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+ io.MouseWheel += GET_WHEEL_DELTA_WPARAM(wParam) > 0 ? +1.0f : -1.0f;
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+ return 0;
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+ case WM_MOUSEHWHEEL:
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+ io.MouseWheelH += GET_WHEEL_DELTA_WPARAM(wParam) > 0 ? +1.0f : -1.0f;
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+ return 0;
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+ case WM_MOUSEMOVE:
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+ io.MousePos.x = (signed short)(lParam);
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+ io.MousePos.y = (signed short)(lParam >> 16);
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+ return 0;
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+ case WM_KEYDOWN:
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+ case WM_SYSKEYDOWN:
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+ if (wParam < 256)
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+ io.KeysDown[wParam] = 1;
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+ return 0;
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+ case WM_KEYUP:
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+ case WM_SYSKEYUP:
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+ if (wParam < 256)
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+ io.KeysDown[wParam] = 0;
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+ return 0;
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+ case WM_CHAR:
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+ // You can also use ToAscii()+GetKeyboardState() to retrieve characters.
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+ if (wParam > 0 && wParam < 0x10000)
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+ io.AddInputCharacter((unsigned short)wParam);
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+ return 0;
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+ case WM_SETCURSOR:
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+ if (LOWORD(lParam) == HTCLIENT)
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+ {
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+ ImGui_ImplWin32_UpdateMouseCursor();
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+ return 1;
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+ }
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+ return 0;
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+ }
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+ return 0;
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+}
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+
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+static void ImGui_ImplDX12_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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+
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+ // Upload texture to graphics system
|
|
|
+ {
|
|
|
+ D3D12_HEAP_PROPERTIES props;
|
|
|
+ memset(&props, 0, sizeof(D3D12_HEAP_PROPERTIES));
|
|
|
+ props.Type = D3D12_HEAP_TYPE_DEFAULT;
|
|
|
+ props.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
|
|
|
+ props.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
|
|
|
+
|
|
|
+ D3D12_RESOURCE_DESC desc;
|
|
|
+ ZeroMemory(&desc, sizeof(desc));
|
|
|
+ desc.Dimension = D3D12_RESOURCE_DIMENSION_TEXTURE2D;
|
|
|
+ desc.Alignment = 0;
|
|
|
+ desc.Width = width;
|
|
|
+ desc.Height = height;
|
|
|
+ desc.DepthOrArraySize = 1;
|
|
|
+ desc.MipLevels = 1;
|
|
|
+ desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
|
|
|
+ desc.SampleDesc.Count = 1;
|
|
|
+ desc.SampleDesc.Quality = 0;
|
|
|
+ desc.Layout = D3D12_TEXTURE_LAYOUT_UNKNOWN;
|
|
|
+ desc.Flags = D3D12_RESOURCE_FLAG_NONE;
|
|
|
+
|
|
|
+ ID3D12Resource* pTexture = NULL;
|
|
|
+ g_pd3dDevice->CreateCommittedResource(&props, D3D12_HEAP_FLAG_NONE, &desc,
|
|
|
+ D3D12_RESOURCE_STATE_COPY_DEST, NULL, IID_PPV_ARGS(&pTexture));
|
|
|
+
|
|
|
+ UINT uploadPitch = (width * 4 + D3D12_TEXTURE_DATA_PITCH_ALIGNMENT - 1u) & ~(D3D12_TEXTURE_DATA_PITCH_ALIGNMENT - 1u);
|
|
|
+ UINT uploadSize = height * uploadPitch;
|
|
|
+ desc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
|
|
|
+ desc.Alignment = 0;
|
|
|
+ desc.Width = uploadSize;
|
|
|
+ desc.Height = 1;
|
|
|
+ desc.DepthOrArraySize = 1;
|
|
|
+ desc.MipLevels = 1;
|
|
|
+ desc.Format = DXGI_FORMAT_UNKNOWN;
|
|
|
+ desc.SampleDesc.Count = 1;
|
|
|
+ desc.SampleDesc.Quality = 0;
|
|
|
+ desc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
|
|
|
+ desc.Flags = D3D12_RESOURCE_FLAG_NONE;
|
|
|
+
|
|
|
+ props.Type = D3D12_HEAP_TYPE_UPLOAD;
|
|
|
+ props.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
|
|
|
+ props.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
|
|
|
+
|
|
|
+ ID3D12Resource* uploadBuffer = NULL;
|
|
|
+ HRESULT hr = g_pd3dDevice->CreateCommittedResource(&props, D3D12_HEAP_FLAG_NONE, &desc,
|
|
|
+ D3D12_RESOURCE_STATE_GENERIC_READ, NULL, IID_PPV_ARGS(&uploadBuffer));
|
|
|
+ IM_ASSERT(SUCCEEDED(hr));
|
|
|
+
|
|
|
+ void* mapped = NULL;
|
|
|
+ D3D12_RANGE range = { 0, uploadSize };
|
|
|
+ hr = uploadBuffer->Map(0, &range, &mapped);
|
|
|
+ IM_ASSERT(SUCCEEDED(hr));
|
|
|
+ for (int y = 0; y < height; y++)
|
|
|
+ memcpy((void*) ((uintptr_t) mapped + y * uploadPitch), pixels + y * width * 4, width * 4);
|
|
|
+ uploadBuffer->Unmap(0, &range);
|
|
|
+
|
|
|
+ D3D12_TEXTURE_COPY_LOCATION srcLocation = {};
|
|
|
+ srcLocation.pResource = uploadBuffer;
|
|
|
+ srcLocation.Type = D3D12_TEXTURE_COPY_TYPE_PLACED_FOOTPRINT;
|
|
|
+ srcLocation.PlacedFootprint.Footprint.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
|
|
|
+ srcLocation.PlacedFootprint.Footprint.Width = width;
|
|
|
+ srcLocation.PlacedFootprint.Footprint.Height = height;
|
|
|
+ srcLocation.PlacedFootprint.Footprint.Depth = 1;
|
|
|
+ srcLocation.PlacedFootprint.Footprint.RowPitch = uploadPitch;
|
|
|
+
|
|
|
+ D3D12_TEXTURE_COPY_LOCATION dstLocation = {};
|
|
|
+ dstLocation.pResource = pTexture;
|
|
|
+ dstLocation.Type = D3D12_TEXTURE_COPY_TYPE_SUBRESOURCE_INDEX;
|
|
|
+ dstLocation.SubresourceIndex = 0;
|
|
|
+
|
|
|
+ D3D12_RESOURCE_BARRIER barrier = {};
|
|
|
+ barrier.Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
|
|
|
+ barrier.Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE;
|
|
|
+ barrier.Transition.pResource = pTexture;
|
|
|
+ barrier.Transition.Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES;
|
|
|
+ barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_COPY_DEST;
|
|
|
+ barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE;
|
|
|
+
|
|
|
+ ID3D12Fence* fence = NULL;
|
|
|
+ hr = g_pd3dDevice->CreateFence(0, D3D12_FENCE_FLAG_NONE, IID_PPV_ARGS(&fence));
|
|
|
+ IM_ASSERT(SUCCEEDED(hr));
|
|
|
+
|
|
|
+ HANDLE event = CreateEvent(0, 0, 0, 0);
|
|
|
+ IM_ASSERT(event != NULL);
|
|
|
+
|
|
|
+ D3D12_COMMAND_QUEUE_DESC queueDesc = {};
|
|
|
+ queueDesc.Type = D3D12_COMMAND_LIST_TYPE_DIRECT;
|
|
|
+ queueDesc.Flags = D3D12_COMMAND_QUEUE_FLAG_NONE;
|
|
|
+ queueDesc.NodeMask = 1;
|
|
|
+
|
|
|
+ ID3D12CommandQueue* cmdQueue = NULL;
|
|
|
+ hr = g_pd3dDevice->CreateCommandQueue(&queueDesc, IID_PPV_ARGS(&cmdQueue));
|
|
|
+ IM_ASSERT(SUCCEEDED(hr));
|
|
|
+
|
|
|
+ ID3D12CommandAllocator* cmdAlloc = NULL;
|
|
|
+ hr = g_pd3dDevice->CreateCommandAllocator(D3D12_COMMAND_LIST_TYPE_DIRECT, IID_PPV_ARGS(&cmdAlloc));
|
|
|
+ IM_ASSERT(SUCCEEDED(hr));
|
|
|
+
|
|
|
+ ID3D12GraphicsCommandList* cmdList = NULL;
|
|
|
+ hr = g_pd3dDevice->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, cmdAlloc, NULL, IID_PPV_ARGS(&cmdList));
|
|
|
+ IM_ASSERT(SUCCEEDED(hr));
|
|
|
+
|
|
|
+ cmdList->CopyTextureRegion(&dstLocation, 0, 0, 0, &srcLocation, NULL);
|
|
|
+ cmdList->ResourceBarrier(1, &barrier);
|
|
|
+
|
|
|
+ hr = cmdList->Close();
|
|
|
+ IM_ASSERT(SUCCEEDED(hr));
|
|
|
+
|
|
|
+ cmdQueue->ExecuteCommandLists(1, (ID3D12CommandList* const*) &cmdList);
|
|
|
+ hr = cmdQueue->Signal(fence, 1);
|
|
|
+ IM_ASSERT(SUCCEEDED(hr));
|
|
|
+
|
|
|
+ fence->SetEventOnCompletion(1, event);
|
|
|
+ WaitForSingleObject(event, INFINITE);
|
|
|
+
|
|
|
+ cmdList->Release();
|
|
|
+ cmdAlloc->Release();
|
|
|
+ cmdQueue->Release();
|
|
|
+ CloseHandle(event);
|
|
|
+ fence->Release();
|
|
|
+ uploadBuffer->Release();
|
|
|
+
|
|
|
+ // Create texture view
|
|
|
+ D3D12_SHADER_RESOURCE_VIEW_DESC srvDesc;
|
|
|
+ ZeroMemory(&srvDesc, sizeof(srvDesc));
|
|
|
+ srvDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
|
|
|
+ srvDesc.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2D;
|
|
|
+ srvDesc.Texture2D.MipLevels = desc.MipLevels;
|
|
|
+ srvDesc.Texture2D.MostDetailedMip = 0;
|
|
|
+ srvDesc.Shader4ComponentMapping = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING;
|
|
|
+ g_pd3dDevice->CreateShaderResourceView(pTexture, &srvDesc, g_hFontSrvCpuDescHandle);
|
|
|
+ if (g_pFontTextureResource != NULL)
|
|
|
+ g_pFontTextureResource->Release();
|
|
|
+ g_pFontTextureResource = pTexture;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Store our identifier
|
|
|
+ static_assert(sizeof(ImTextureID) >= sizeof(g_hFontSrvGpuDescHandle.ptr), "Can't pack descriptor handle into TexID");
|
|
|
+ io.Fonts->TexID = (void *)g_hFontSrvGpuDescHandle.ptr;
|
|
|
+}
|
|
|
+
|
|
|
+bool ImGui_ImplDX12_CreateDeviceObjects()
|
|
|
+{
|
|
|
+ if (!g_pd3dDevice)
|
|
|
+ return false;
|
|
|
+ if (g_pPipelineState)
|
|
|
+ ImGui_ImplDX12_InvalidateDeviceObjects();
|
|
|
+
|
|
|
+ // Create the root signature
|
|
|
+ {
|
|
|
+ D3D12_DESCRIPTOR_RANGE descRange = {};
|
|
|
+ descRange.RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_SRV;
|
|
|
+ descRange.NumDescriptors = 1;
|
|
|
+ descRange.BaseShaderRegister = 0;
|
|
|
+ descRange.RegisterSpace = 0;
|
|
|
+ descRange.OffsetInDescriptorsFromTableStart = 0;
|
|
|
+
|
|
|
+ D3D12_ROOT_PARAMETER param[2] = {};
|
|
|
+
|
|
|
+ param[0].ParameterType = D3D12_ROOT_PARAMETER_TYPE_32BIT_CONSTANTS;
|
|
|
+ param[0].Constants.ShaderRegister = 0;
|
|
|
+ param[0].Constants.RegisterSpace = 0;
|
|
|
+ param[0].Constants.Num32BitValues = 16;
|
|
|
+ param[0].ShaderVisibility = D3D12_SHADER_VISIBILITY_VERTEX;
|
|
|
+
|
|
|
+ param[1].ParameterType = D3D12_ROOT_PARAMETER_TYPE_DESCRIPTOR_TABLE;
|
|
|
+ param[1].DescriptorTable.NumDescriptorRanges = 1;
|
|
|
+ param[1].DescriptorTable.pDescriptorRanges = &descRange;
|
|
|
+ param[1].ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;
|
|
|
+
|
|
|
+ D3D12_STATIC_SAMPLER_DESC staticSampler = {};
|
|
|
+ staticSampler.Filter = D3D12_FILTER_MIN_MAG_MIP_LINEAR;
|
|
|
+ staticSampler.AddressU = D3D12_TEXTURE_ADDRESS_MODE_WRAP;
|
|
|
+ staticSampler.AddressV = D3D12_TEXTURE_ADDRESS_MODE_WRAP;
|
|
|
+ staticSampler.AddressW = D3D12_TEXTURE_ADDRESS_MODE_WRAP;
|
|
|
+ staticSampler.MipLODBias = 0.f;
|
|
|
+ staticSampler.MaxAnisotropy = 0;
|
|
|
+ staticSampler.ComparisonFunc = D3D12_COMPARISON_FUNC_ALWAYS;
|
|
|
+ staticSampler.BorderColor = D3D12_STATIC_BORDER_COLOR_TRANSPARENT_BLACK;
|
|
|
+ staticSampler.MinLOD = 0.f;
|
|
|
+ staticSampler.MaxLOD = 0.f;
|
|
|
+ staticSampler.ShaderRegister = 0;
|
|
|
+ staticSampler.RegisterSpace = 0;
|
|
|
+ staticSampler.ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;
|
|
|
+
|
|
|
+ D3D12_ROOT_SIGNATURE_DESC desc = {};
|
|
|
+ desc.NumParameters = _countof(param);
|
|
|
+ desc.pParameters = param;
|
|
|
+ desc.NumStaticSamplers = 1;
|
|
|
+ desc.pStaticSamplers = &staticSampler;
|
|
|
+ desc.Flags =
|
|
|
+ D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |
|
|
|
+ D3D12_ROOT_SIGNATURE_FLAG_DENY_HULL_SHADER_ROOT_ACCESS |
|
|
|
+ D3D12_ROOT_SIGNATURE_FLAG_DENY_DOMAIN_SHADER_ROOT_ACCESS |
|
|
|
+ D3D12_ROOT_SIGNATURE_FLAG_DENY_GEOMETRY_SHADER_ROOT_ACCESS;
|
|
|
+
|
|
|
+ ID3DBlob* blob = NULL;
|
|
|
+ if (D3D12SerializeRootSignature(&desc, D3D_ROOT_SIGNATURE_VERSION_1, &blob, NULL) != S_OK)
|
|
|
+ return false;
|
|
|
+
|
|
|
+ g_pd3dDevice->CreateRootSignature(0, blob->GetBufferPointer(), blob->GetBufferSize(), IID_PPV_ARGS(&g_pRootSignature));
|
|
|
+ blob->Release();
|
|
|
+ }
|
|
|
+
|
|
|
+ // 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 DX12 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.
|
|
|
+
|
|
|
+ D3D12_GRAPHICS_PIPELINE_STATE_DESC psoDesc;
|
|
|
+ memset(&psoDesc, 0, sizeof(D3D12_GRAPHICS_PIPELINE_STATE_DESC));
|
|
|
+ psoDesc.NodeMask = 1;
|
|
|
+ psoDesc.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE;
|
|
|
+ psoDesc.pRootSignature = g_pRootSignature;
|
|
|
+ psoDesc.SampleMask = UINT_MAX;
|
|
|
+ psoDesc.NumRenderTargets = 1;
|
|
|
+ psoDesc.RTVFormats[0] = g_RTVFormat;
|
|
|
+ psoDesc.SampleDesc.Count = 1;
|
|
|
+ psoDesc.Flags = D3D12_PIPELINE_STATE_FLAG_NONE;
|
|
|
+
|
|
|
+ // 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_5_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;
|
|
|
+ psoDesc.VS = { g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize() };
|
|
|
+
|
|
|
+ // Create the input layout
|
|
|
+ static D3D12_INPUT_ELEMENT_DESC local_layout[] = {
|
|
|
+ { "POSITION", 0, DXGI_FORMAT_R32G32_FLOAT, 0, (size_t)(&((ImDrawVert*)0)->pos), D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
|
|
|
+ { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, (size_t)(&((ImDrawVert*)0)->uv), D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
|
|
|
+ { "COLOR", 0, DXGI_FORMAT_R8G8B8A8_UNORM, 0, (size_t)(&((ImDrawVert*)0)->col), D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
|
|
|
+ };
|
|
|
+ psoDesc.InputLayout = { local_layout, 3 };
|
|
|
+ }
|
|
|
+
|
|
|
+ // Create the pixel shader
|
|
|
+ {
|
|
|
+ static const char* pixelShader =
|
|
|
+ "struct PS_INPUT\
|
|
|
+ {\
|
|
|
+ float4 pos : SV_POSITION;\
|
|
|
+ float4 col : COLOR0;\
|
|
|
+ float2 uv : TEXCOORD0;\
|
|
|
+ };\
|
|
|
+ SamplerState sampler0 : register(s0);\
|
|
|
+ Texture2D texture0 : register(t0);\
|
|
|
+ \
|
|
|
+ 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_5_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;
|
|
|
+ psoDesc.PS = { g_pPixelShaderBlob->GetBufferPointer(), g_pPixelShaderBlob->GetBufferSize() };
|
|
|
+ }
|
|
|
+
|
|
|
+ // Create the blending setup
|
|
|
+ {
|
|
|
+ D3D12_BLEND_DESC& desc = psoDesc.BlendState;
|
|
|
+ desc.AlphaToCoverageEnable = false;
|
|
|
+ desc.RenderTarget[0].BlendEnable = true;
|
|
|
+ desc.RenderTarget[0].SrcBlend = D3D12_BLEND_SRC_ALPHA;
|
|
|
+ desc.RenderTarget[0].DestBlend = D3D12_BLEND_INV_SRC_ALPHA;
|
|
|
+ desc.RenderTarget[0].BlendOp = D3D12_BLEND_OP_ADD;
|
|
|
+ desc.RenderTarget[0].SrcBlendAlpha = D3D12_BLEND_INV_SRC_ALPHA;
|
|
|
+ desc.RenderTarget[0].DestBlendAlpha = D3D12_BLEND_ZERO;
|
|
|
+ desc.RenderTarget[0].BlendOpAlpha = D3D12_BLEND_OP_ADD;
|
|
|
+ desc.RenderTarget[0].RenderTargetWriteMask = D3D12_COLOR_WRITE_ENABLE_ALL;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Create the rasterizer state
|
|
|
+ {
|
|
|
+ D3D12_RASTERIZER_DESC& desc = psoDesc.RasterizerState;
|
|
|
+ desc.FillMode = D3D12_FILL_MODE_SOLID;
|
|
|
+ desc.CullMode = D3D12_CULL_MODE_NONE;
|
|
|
+ desc.FrontCounterClockwise = FALSE;
|
|
|
+ desc.DepthBias = D3D12_DEFAULT_DEPTH_BIAS;
|
|
|
+ desc.DepthBiasClamp = D3D12_DEFAULT_DEPTH_BIAS_CLAMP;
|
|
|
+ desc.SlopeScaledDepthBias = D3D12_DEFAULT_SLOPE_SCALED_DEPTH_BIAS;
|
|
|
+ desc.DepthClipEnable = true;
|
|
|
+ desc.MultisampleEnable = FALSE;
|
|
|
+ desc.AntialiasedLineEnable = FALSE;
|
|
|
+ desc.ForcedSampleCount = 0;
|
|
|
+ desc.ConservativeRaster = D3D12_CONSERVATIVE_RASTERIZATION_MODE_OFF;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Create depth-stencil State
|
|
|
+ {
|
|
|
+ D3D12_DEPTH_STENCIL_DESC& desc = psoDesc.DepthStencilState;
|
|
|
+ desc.DepthEnable = false;
|
|
|
+ desc.DepthWriteMask = D3D12_DEPTH_WRITE_MASK_ALL;
|
|
|
+ desc.DepthFunc = D3D12_COMPARISON_FUNC_ALWAYS;
|
|
|
+ desc.StencilEnable = false;
|
|
|
+ desc.FrontFace.StencilFailOp = desc.FrontFace.StencilDepthFailOp = desc.FrontFace.StencilPassOp = D3D12_STENCIL_OP_KEEP;
|
|
|
+ desc.FrontFace.StencilFunc = D3D12_COMPARISON_FUNC_ALWAYS;
|
|
|
+ desc.BackFace = desc.FrontFace;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (g_pd3dDevice->CreateGraphicsPipelineState(&psoDesc, IID_PPV_ARGS(&g_pPipelineState)) != S_OK)
|
|
|
+ return false;
|
|
|
+
|
|
|
+ ImGui_ImplDX12_CreateFontsTexture();
|
|
|
+
|
|
|
+ return true;
|
|
|
+}
|
|
|
+
|
|
|
+void ImGui_ImplDX12_InvalidateDeviceObjects()
|
|
|
+{
|
|
|
+ if (!g_pd3dDevice)
|
|
|
+ return;
|
|
|
+
|
|
|
+ if (g_pVertexShaderBlob) { g_pVertexShaderBlob->Release(); g_pVertexShaderBlob = NULL; }
|
|
|
+ if (g_pPixelShaderBlob) { g_pPixelShaderBlob->Release(); g_pPixelShaderBlob = NULL; }
|
|
|
+ if (g_pRootSignature) { g_pRootSignature->Release(); g_pRootSignature = NULL; }
|
|
|
+ if (g_pPipelineState) { g_pPipelineState->Release(); g_pPipelineState = NULL; }
|
|
|
+ if (g_pFontTextureResource) { g_pFontTextureResource->Release(); g_pFontTextureResource = NULL; ImGui::GetIO().Fonts->TexID = NULL; } // We copied g_pFontTextureView to io.Fonts->TexID so let's clear that as well.
|
|
|
+ for (UINT i = 0; i < g_numFramesInFlight; i++)
|
|
|
+ {
|
|
|
+ if (g_pFrameResources[i].IB) { g_pFrameResources[i].IB->Release(); g_pFrameResources[i].IB = NULL; }
|
|
|
+ if (g_pFrameResources[i].VB) { g_pFrameResources[i].VB->Release(); g_pFrameResources[i].VB = NULL; }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+bool ImGui_ImplDX12_Init(void* hwnd, int num_frames_in_flight,
|
|
|
+ ID3D12Device* device,
|
|
|
+ DXGI_FORMAT rtv_format,
|
|
|
+ D3D12_CPU_DESCRIPTOR_HANDLE font_srv_cpu_desc_handle,
|
|
|
+ D3D12_GPU_DESCRIPTOR_HANDLE font_srv_gpu_desc_handle)
|
|
|
+{
|
|
|
+ g_hWnd = (HWND)hwnd;
|
|
|
+ g_pd3dDevice = device;
|
|
|
+ g_RTVFormat = rtv_format;
|
|
|
+ g_hFontSrvCpuDescHandle = font_srv_cpu_desc_handle;
|
|
|
+ g_hFontSrvGpuDescHandle = font_srv_gpu_desc_handle;
|
|
|
+ g_pFrameResources = new FrameResources [num_frames_in_flight];
|
|
|
+ g_numFramesInFlight = num_frames_in_flight;
|
|
|
+ g_frameIndex = UINT_MAX;
|
|
|
+
|
|
|
+ for (int i = 0; i < num_frames_in_flight; i++)
|
|
|
+ {
|
|
|
+ g_pFrameResources[i].IB = NULL;
|
|
|
+ g_pFrameResources[i].VB = NULL;
|
|
|
+ g_pFrameResources[i].VertexBufferSize = 5000;
|
|
|
+ g_pFrameResources[i].IndexBufferSize = 10000;
|
|
|
+ }
|
|
|
+
|
|
|
+ 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_Insert] = VK_INSERT;
|
|
|
+ io.KeyMap[ImGuiKey_Delete] = VK_DELETE;
|
|
|
+ io.KeyMap[ImGuiKey_Backspace] = VK_BACK;
|
|
|
+ io.KeyMap[ImGuiKey_Space] = VK_SPACE;
|
|
|
+ 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.ImeWindowHandle = g_hWnd;
|
|
|
+
|
|
|
+ return true;
|
|
|
+}
|
|
|
+
|
|
|
+void ImGui_ImplDX12_Shutdown()
|
|
|
+{
|
|
|
+ ImGui_ImplDX12_InvalidateDeviceObjects();
|
|
|
+ delete[] g_pFrameResources;
|
|
|
+ g_pd3dDevice = NULL;
|
|
|
+ g_hWnd = (HWND)0;
|
|
|
+ g_pd3dCommandList = NULL;
|
|
|
+ g_hFontSrvCpuDescHandle.ptr = 0;
|
|
|
+ g_hFontSrvGpuDescHandle.ptr = 0;
|
|
|
+ g_pFrameResources = NULL;
|
|
|
+ g_numFramesInFlight = 0;
|
|
|
+ g_frameIndex = UINT_MAX;
|
|
|
+}
|
|
|
+
|
|
|
+void ImGui_ImplDX12_NewFrame(ID3D12GraphicsCommandList* command_list)
|
|
|
+{
|
|
|
+ if (!g_pPipelineState)
|
|
|
+ ImGui_ImplDX12_CreateDeviceObjects();
|
|
|
+
|
|
|
+ g_pd3dCommandList = command_list;
|
|
|
+
|
|
|
+ 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
|
|
|
+
|
|
|
+ // Set OS mouse position if requested last frame by io.WantMoveMouse flag (used when io.NavMovesTrue is enabled by user and using directional navigation)
|
|
|
+ if (io.WantMoveMouse)
|
|
|
+ {
|
|
|
+ POINT pos = { (int)io.MousePos.x, (int)io.MousePos.y };
|
|
|
+ ClientToScreen(g_hWnd, &pos);
|
|
|
+ SetCursorPos(pos.x, pos.y);
|
|
|
+ }
|
|
|
+
|
|
|
+ // Update OS mouse cursor with the cursor requested by imgui
|
|
|
+ ImGuiMouseCursor mouse_cursor = io.MouseDrawCursor ? ImGuiMouseCursor_None : ImGui::GetMouseCursor();
|
|
|
+ if (g_LastMouseCursor != mouse_cursor)
|
|
|
+ {
|
|
|
+ g_LastMouseCursor = mouse_cursor;
|
|
|
+ ImGui_ImplWin32_UpdateMouseCursor();
|
|
|
+ }
|
|
|
+
|
|
|
+ // Start the frame. This call will update the io.WantCaptureMouse, io.WantCaptureKeyboard flag that you can use to dispatch inputs (or not) to your application.
|
|
|
+ ImGui::NewFrame();
|
|
|
+}
|
omar