Merge remote-tracking branch 'origin' into 2015-03-antialiased-primitives
ocornut
10 years ago
commit
378eee490b
@ -1,16 +1,18 @@
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directx9_example/
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DirectX9 example application (Windows).
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directx11_example/
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DirectX11 example (Windows).
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opengl_example/
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opengl_example/
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OpenGL exemple, using fixed pipeline (Windows/OSX/Linux etc., using glfw+glew)
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OpenGL example, using GLFW + fixed pipeline.
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This is simple and should work for all OpenGL enabled applications.
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This is simple and should work for all OpenGL enabled applications.
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Prefer following this example since it is the shortest one!
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opengl3_example/
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opengl3_example/
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OpenGL exemple, using programmable pipeline (Windows/OSX/Linux etc., using glfw+glew)
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OpenGL exemple, using GLFW/GL3W + programmable pipeline.
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This uses more modern calls and custom shaders.
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This uses more modern calls and custom shaders.
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I don't think there is an advantage using this over the "simpler example, but it is provided for information.
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I don't think there is an advantage using this over the simpler example, but it is provided for reference.
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directx9_example/
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DirectX9 example, Windows only.
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directx11_example/
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DirectX11 example, Windows only.
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This is quite long and tedious, because: DirectX11.
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@ -0,0 +1,465 @@
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// ImGui Win32 + DirectX11 binding
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// https://github.com/ocornut/imgui
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#include <imgui.h>
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#include "imgui_impl_dx11.h"
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// DirectX
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#include <d3d11.h>
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#include <d3dcompiler.h>
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#define DIRECTINPUT_VERSION 0x0800
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#include <dinput.h>
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// Data
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static INT64 g_Time = 0;
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static INT64 g_TicksPerSecond = 0;
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static HWND g_hWnd = 0;
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static ID3D11Device* g_pd3dDevice = NULL;
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static ID3D11DeviceContext* g_pd3dDeviceContext = NULL;
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static ID3D11Buffer* g_pVB = NULL;
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static ID3D10Blob * g_pVertexShaderBlob = NULL;
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static ID3D11VertexShader* g_pVertexShader = NULL;
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static ID3D11InputLayout* g_pInputLayout = NULL;
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static ID3D11Buffer* g_pVertexConstantBuffer = NULL;
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static ID3D10Blob * g_pPixelShaderBlob = NULL;
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static ID3D11PixelShader* g_pPixelShader = NULL;
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static ID3D11SamplerState* g_pFontSampler = NULL;
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static ID3D11ShaderResourceView*g_pFontTextureView = NULL;
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static ID3D11BlendState* g_blendState = NULL;
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struct CUSTOMVERTEX
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{
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float pos[2];
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float uv[2];
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unsigned int col;
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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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// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
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// If text or lines are blurry when integrating ImGui in your engine:
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// - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f)
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static void ImGui_ImplDX11_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_count)
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{
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// Copy and convert all vertices into a single contiguous buffer
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D3D11_MAPPED_SUBRESOURCE mappedResource;
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if (g_pd3dDeviceContext->Map(g_pVB, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource) != S_OK)
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return;
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CUSTOMVERTEX* vtx_dst = (CUSTOMVERTEX*)mappedResource.pData;
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for (int n = 0; n < cmd_lists_count; n++)
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{
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const ImDrawList* cmd_list = cmd_lists[n];
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const ImDrawVert* vtx_src = &cmd_list->vtx_buffer[0];
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for (size_t i = 0; i < cmd_list->vtx_buffer.size(); i++)
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{
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vtx_dst->pos[0] = vtx_src->pos.x;
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vtx_dst->pos[1] = vtx_src->pos.y;
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vtx_dst->uv[0] = vtx_src->uv.x;
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vtx_dst->uv[1] = vtx_src->uv.y;
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vtx_dst->col = vtx_src->col;
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vtx_dst++;
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vtx_src++;
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}
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}
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g_pd3dDeviceContext->Unmap(g_pVB, 0);
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// Setup orthographic projection matrix into our constant buffer
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{
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D3D11_MAPPED_SUBRESOURCE mappedResource;
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if (g_pd3dDeviceContext->Map(g_pVertexConstantBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource) != S_OK)
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return;
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VERTEX_CONSTANT_BUFFER* pConstantBuffer = (VERTEX_CONSTANT_BUFFER*)mappedResource.pData;
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const float L = 0.0f;
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const float R = ImGui::GetIO().DisplaySize.x;
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const float B = ImGui::GetIO().DisplaySize.y;
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const float T = 0.0f;
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const 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(&pConstantBuffer->mvp, mvp, sizeof(mvp));
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g_pd3dDeviceContext->Unmap(g_pVertexConstantBuffer, 0);
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}
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// Setup viewport
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{
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D3D11_VIEWPORT vp;
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memset(&vp, 0, sizeof(D3D11_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 = 0;
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vp.TopLeftY = 0;
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g_pd3dDeviceContext->RSSetViewports(1, &vp);
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}
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// Bind shader and vertex buffers
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unsigned int stride = sizeof(CUSTOMVERTEX);
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unsigned int offset = 0;
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g_pd3dDeviceContext->IASetInputLayout(g_pInputLayout);
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g_pd3dDeviceContext->IASetVertexBuffers(0, 1, &g_pVB, &stride, &offset);
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g_pd3dDeviceContext->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
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g_pd3dDeviceContext->VSSetShader(g_pVertexShader, NULL, 0);
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g_pd3dDeviceContext->VSSetConstantBuffers(0, 1, &g_pVertexConstantBuffer);
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g_pd3dDeviceContext->PSSetShader(g_pPixelShader, NULL, 0);
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g_pd3dDeviceContext->PSSetSamplers(0, 1, &g_pFontSampler);
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// Setup render state
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const float blendFactor[4] = { 0.f, 0.f, 0.f, 0.f };
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g_pd3dDeviceContext->OMSetBlendState(g_blendState, blendFactor, 0xffffffff);
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// Render command lists
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int vtx_offset = 0;
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for (int n = 0; n < cmd_lists_count; n++)
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{
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const ImDrawList* cmd_list = cmd_lists[n];
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for (size_t cmd_i = 0; cmd_i < cmd_list->commands.size(); cmd_i++)
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{
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const ImDrawCmd* pcmd = &cmd_list->commands[cmd_i];
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if (pcmd->user_callback)
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{
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pcmd->user_callback(cmd_list, pcmd);
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}
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else
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{
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const D3D11_RECT r = { (LONG)pcmd->clip_rect.x, (LONG)pcmd->clip_rect.y, (LONG)pcmd->clip_rect.z, (LONG)pcmd->clip_rect.w };
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g_pd3dDeviceContext->PSSetShaderResources(0, 1, (ID3D11ShaderResourceView**)&pcmd->texture_id);
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g_pd3dDeviceContext->RSSetScissorRects(1, &r);
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g_pd3dDeviceContext->Draw(pcmd->vtx_count, vtx_offset);
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}
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vtx_offset += pcmd->vtx_count;
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}
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}
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// Restore modified state
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g_pd3dDeviceContext->IASetInputLayout(NULL);
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g_pd3dDeviceContext->PSSetShader(NULL, NULL, 0);
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g_pd3dDeviceContext->VSSetShader(NULL, NULL, 0);
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}
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LRESULT ImGui_ImplDX11_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
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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:
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io.MouseDown[0] = true;
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return true;
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case WM_LBUTTONUP:
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io.MouseDown[0] = false;
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return true;
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case WM_RBUTTONDOWN:
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io.MouseDown[1] = true;
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return true;
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case WM_RBUTTONUP:
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io.MouseDown[1] = false;
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return true;
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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 true;
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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 true;
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case WM_KEYDOWN:
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if (wParam >= 0 && wParam < 256)
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io.KeysDown[wParam] = 1;
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return true;
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case WM_KEYUP:
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if (wParam >= 0 && wParam < 256)
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io.KeysDown[wParam] = 0;
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return true;
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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 true;
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}
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return 0;
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}
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static void ImGui_ImplDX11_CreateFontsTexture()
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{
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ImGuiIO& io = ImGui::GetIO();
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// Build
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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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// Create DX11 texture
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{
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D3D11_TEXTURE2D_DESC texDesc;
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ZeroMemory(&texDesc, sizeof(texDesc));
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texDesc.Width = width;
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texDesc.Height = height;
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texDesc.MipLevels = 1;
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texDesc.ArraySize = 1;
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texDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
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texDesc.SampleDesc.Count = 1;
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texDesc.Usage = D3D11_USAGE_DEFAULT;
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texDesc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
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texDesc.CPUAccessFlags = 0;
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ID3D11Texture2D *pTexture = NULL;
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D3D11_SUBRESOURCE_DATA subResource;
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subResource.pSysMem = pixels;
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subResource.SysMemPitch = texDesc.Width * 4;
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subResource.SysMemSlicePitch = 0;
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g_pd3dDevice->CreateTexture2D(&texDesc, &subResource, &pTexture);
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// Create texture view
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D3D11_SHADER_RESOURCE_VIEW_DESC srvDesc;
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ZeroMemory(&srvDesc, sizeof(srvDesc));
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srvDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
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srvDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
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srvDesc.Texture2D.MipLevels = texDesc.MipLevels;
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srvDesc.Texture2D.MostDetailedMip = 0;
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g_pd3dDevice->CreateShaderResourceView(pTexture, &srvDesc, &g_pFontTextureView);
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pTexture->Release();
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|
}
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// Store our identifier
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io.Fonts->TexID = (void *)g_pFontTextureView;
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// Create texture sampler
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||||||
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{
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D3D11_SAMPLER_DESC samplerDesc;
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ZeroMemory(&samplerDesc, sizeof(samplerDesc));
|
||||||
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samplerDesc.Filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR;
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samplerDesc.AddressU = D3D11_TEXTURE_ADDRESS_WRAP;
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|
samplerDesc.AddressV = D3D11_TEXTURE_ADDRESS_WRAP;
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samplerDesc.AddressW = D3D11_TEXTURE_ADDRESS_WRAP;
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samplerDesc.MipLODBias = 0.f;
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samplerDesc.ComparisonFunc = D3D11_COMPARISON_ALWAYS;
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|
samplerDesc.MinLOD = 0.f;
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samplerDesc.MaxLOD = 0.f;
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||||||
|
g_pd3dDevice->CreateSamplerState(&samplerDesc, &g_pFontSampler);
|
||||||
|
}
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||||||
|
}
|
||||||
|
|
||||||
|
bool ImGui_ImplDX11_CreateDeviceObjects()
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||||||
|
{
|
||||||
|
if (!g_pd3dDevice)
|
||||||
|
return false;
|
||||||
|
if (g_pVB)
|
||||||
|
ImGui_ImplDX11_InvalidateDeviceObjects();
|
||||||
|
|
||||||
|
// Create the vertex shader
|
||||||
|
{
|
||||||
|
static const char* vertexShader =
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||||||
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"cbuffer vertexBuffer : register(c0) \
|
||||||
|
{\
|
||||||
|
float4x4 ProjectionMatrix; \
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||||||
|
};\
|
||||||
|
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;
|
||||||
|
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 localLayout[] = {
|
||||||
|
{ "POSITION", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, (size_t)(&((CUSTOMVERTEX*)0)->pos), D3D11_INPUT_PER_VERTEX_DATA, 0 },
|
||||||
|
{ "COLOR", 0, DXGI_FORMAT_R8G8B8A8_UNORM, 0, (size_t)(&((CUSTOMVERTEX*)0)->col), D3D11_INPUT_PER_VERTEX_DATA, 0 },
|
||||||
|
{ "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, (size_t)(&((CUSTOMVERTEX*)0)->uv), D3D11_INPUT_PER_VERTEX_DATA, 0 },
|
||||||
|
};
|
||||||
|
|
||||||
|
if (g_pd3dDevice->CreateInputLayout(localLayout, 3, g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize(), &g_pInputLayout) != S_OK)
|
||||||
|
return false;
|
||||||
|
|
||||||
|
// Create the constant buffer
|
||||||
|
{
|
||||||
|
D3D11_BUFFER_DESC cbDesc;
|
||||||
|
cbDesc.ByteWidth = sizeof(VERTEX_CONSTANT_BUFFER);
|
||||||
|
cbDesc.Usage = D3D11_USAGE_DYNAMIC;
|
||||||
|
cbDesc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
|
||||||
|
cbDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
|
||||||
|
cbDesc.MiscFlags = 0;
|
||||||
|
g_pd3dDevice->CreateBuffer(&cbDesc, 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_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;
|
||||||
|
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_blendState);
|
||||||
|
}
|
||||||
|
|
||||||
|
// Create the vertex buffer
|
||||||
|
{
|
||||||
|
D3D11_BUFFER_DESC bufferDesc;
|
||||||
|
memset(&bufferDesc, 0, sizeof(D3D11_BUFFER_DESC));
|
||||||
|
bufferDesc.Usage = D3D11_USAGE_DYNAMIC;
|
||||||
|
bufferDesc.ByteWidth = 100000 * sizeof(CUSTOMVERTEX); // Maybe we should handle that more dynamically?
|
||||||
|
bufferDesc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
|
||||||
|
bufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
|
||||||
|
bufferDesc.MiscFlags = 0;
|
||||||
|
if (g_pd3dDevice->CreateBuffer(&bufferDesc, NULL, &g_pVB) < 0)
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
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(); ImGui::GetIO().Fonts->TexID = 0; }
|
||||||
|
if (g_pVB) { g_pVB->Release(); g_pVB = NULL; }
|
||||||
|
|
||||||
|
if (g_blendState) { g_blendState->Release(); g_blendState = 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_UP;
|
||||||
|
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;
|
||||||
|
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_pVB)
|
||||||
|
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.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
|
||||||
|
|
||||||
|
// Start the frame
|
||||||
|
ImGui::NewFrame();
|
||||||
|
}
|
||||||
@ -0,0 +1,20 @@
|
|||||||
|
// ImGui Win32 + DirectX11 binding
|
||||||
|
// https://github.com/ocornut/imgui
|
||||||
|
|
||||||
|
struct ID3D11Device;
|
||||||
|
struct ID3D11DeviceContext;
|
||||||
|
|
||||||
|
bool ImGui_ImplDX11_Init(void* hwnd, ID3D11Device* device, ID3D11DeviceContext* device_context);
|
||||||
|
void ImGui_ImplDX11_Shutdown();
|
||||||
|
void ImGui_ImplDX11_NewFrame();
|
||||||
|
|
||||||
|
// Use if you want to reset your rendering device without losing ImGui state.
|
||||||
|
void ImGui_ImplDX11_InvalidateDeviceObjects();
|
||||||
|
bool ImGui_ImplDX11_CreateDeviceObjects();
|
||||||
|
|
||||||
|
// Handler for Win32 messages, update mouse/keyboard data.
|
||||||
|
// You may or not need this for your implementation, but it can serve as reference for handling inputs.
|
||||||
|
// Commented out to avoid dragging dependencies on <windows.h> types. You can copy the extern declaration in your code.
|
||||||
|
/*
|
||||||
|
extern LRESULT ImGui_ImplDX11_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
|
||||||
|
*/
|
||||||
@ -0,0 +1,286 @@
|
|||||||
|
// ImGui Win32 + DirectX9 binding
|
||||||
|
// https://github.com/ocornut/imgui
|
||||||
|
|
||||||
|
#include <imgui.h>
|
||||||
|
#include "imgui_impl_dx9.h"
|
||||||
|
|
||||||
|
// DirectX
|
||||||
|
#include <d3dx9.h>
|
||||||
|
#define DIRECTINPUT_VERSION 0x0800
|
||||||
|
#include <dinput.h>
|
||||||
|
|
||||||
|
// Data
|
||||||
|
static HWND g_hWnd = 0;
|
||||||
|
static INT64 g_Time = 0;
|
||||||
|
static INT64 g_TicksPerSecond = 0;
|
||||||
|
static LPDIRECT3DDEVICE9 g_pd3dDevice = NULL;
|
||||||
|
static LPDIRECT3DVERTEXBUFFER9 g_pVB = NULL;
|
||||||
|
|
||||||
|
struct CUSTOMVERTEX
|
||||||
|
{
|
||||||
|
D3DXVECTOR3 pos;
|
||||||
|
D3DCOLOR col;
|
||||||
|
D3DXVECTOR2 uv;
|
||||||
|
};
|
||||||
|
#define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ|D3DFVF_DIFFUSE|D3DFVF_TEX1)
|
||||||
|
|
||||||
|
// 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)
|
||||||
|
static void ImGui_ImplDX9_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_count)
|
||||||
|
{
|
||||||
|
size_t total_vtx_count = 0;
|
||||||
|
for (int n = 0; n < cmd_lists_count; n++)
|
||||||
|
total_vtx_count += cmd_lists[n]->vtx_buffer.size();
|
||||||
|
if (total_vtx_count == 0)
|
||||||
|
return;
|
||||||
|
|
||||||
|
// Copy and convert all vertices into a single contiguous buffer
|
||||||
|
CUSTOMVERTEX* vtx_dst;
|
||||||
|
if (g_pVB->Lock(0, (UINT)total_vtx_count, (void**)&vtx_dst, D3DLOCK_DISCARD) < 0)
|
||||||
|
return;
|
||||||
|
for (int n = 0; n < cmd_lists_count; n++)
|
||||||
|
{
|
||||||
|
const ImDrawList* cmd_list = cmd_lists[n];
|
||||||
|
const ImDrawVert* vtx_src = &cmd_list->vtx_buffer[0];
|
||||||
|
for (size_t i = 0; i < cmd_list->vtx_buffer.size(); i++)
|
||||||
|
{
|
||||||
|
vtx_dst->pos.x = vtx_src->pos.x;
|
||||||
|
vtx_dst->pos.y = vtx_src->pos.y;
|
||||||
|
vtx_dst->pos.z = 0.0f;
|
||||||
|
vtx_dst->col = (vtx_src->col & 0xFF00FF00) | ((vtx_src->col & 0xFF0000)>>16) | ((vtx_src->col & 0xFF) << 16); // RGBA --> ARGB for DirectX9
|
||||||
|
vtx_dst->uv.x = vtx_src->uv.x;
|
||||||
|
vtx_dst->uv.y = vtx_src->uv.y;
|
||||||
|
vtx_dst++;
|
||||||
|
vtx_src++;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
g_pVB->Unlock();
|
||||||
|
|
||||||
|
g_pd3dDevice->SetStreamSource( 0, g_pVB, 0, sizeof( CUSTOMVERTEX ) );
|
||||||
|
g_pd3dDevice->SetFVF( D3DFVF_CUSTOMVERTEX );
|
||||||
|
|
||||||
|
// Setup render state: alpha-blending, no face culling, no depth testing
|
||||||
|
g_pd3dDevice->SetRenderState( D3DRS_CULLMODE, D3DCULL_NONE );
|
||||||
|
g_pd3dDevice->SetRenderState( D3DRS_LIGHTING, false );
|
||||||
|
g_pd3dDevice->SetRenderState( D3DRS_ZENABLE, false );
|
||||||
|
g_pd3dDevice->SetRenderState( D3DRS_ALPHABLENDENABLE, true );
|
||||||
|
g_pd3dDevice->SetRenderState( D3DRS_BLENDOP, D3DBLENDOP_ADD );
|
||||||
|
g_pd3dDevice->SetRenderState( D3DRS_ALPHATESTENABLE, false );
|
||||||
|
g_pd3dDevice->SetRenderState( D3DRS_SRCBLEND, D3DBLEND_SRCALPHA );
|
||||||
|
g_pd3dDevice->SetRenderState( D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA );
|
||||||
|
g_pd3dDevice->SetRenderState( D3DRS_SCISSORTESTENABLE, true );
|
||||||
|
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLOROP, D3DTOP_SELECTARG1 );
|
||||||
|
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG1, D3DTA_DIFFUSE );
|
||||||
|
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAOP, D3DTOP_MODULATE );
|
||||||
|
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE );
|
||||||
|
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE );
|
||||||
|
g_pd3dDevice->SetSamplerState( 0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR );
|
||||||
|
g_pd3dDevice->SetSamplerState( 0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR );
|
||||||
|
|
||||||
|
// Setup orthographic projection matrix
|
||||||
|
D3DXMATRIXA16 mat;
|
||||||
|
D3DXMatrixIdentity(&mat);
|
||||||
|
g_pd3dDevice->SetTransform(D3DTS_WORLD, &mat);
|
||||||
|
g_pd3dDevice->SetTransform(D3DTS_VIEW, &mat);
|
||||||
|
D3DXMatrixOrthoOffCenterLH(&mat, 0.5f, ImGui::GetIO().DisplaySize.x+0.5f, ImGui::GetIO().DisplaySize.y+0.5f, 0.5f, -1.0f, +1.0f);
|
||||||
|
g_pd3dDevice->SetTransform(D3DTS_PROJECTION, &mat);
|
||||||
|
|
||||||
|
// Render command lists
|
||||||
|
int vtx_offset = 0;
|
||||||
|
for (int n = 0; n < cmd_lists_count; n++)
|
||||||
|
{
|
||||||
|
const ImDrawList* cmd_list = cmd_lists[n];
|
||||||
|
for (size_t cmd_i = 0; cmd_i < cmd_list->commands.size(); cmd_i++)
|
||||||
|
{
|
||||||
|
const ImDrawCmd* pcmd = &cmd_list->commands[cmd_i];
|
||||||
|
if (pcmd->user_callback)
|
||||||
|
{
|
||||||
|
pcmd->user_callback(cmd_list, pcmd);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
const RECT r = { (LONG)pcmd->clip_rect.x, (LONG)pcmd->clip_rect.y, (LONG)pcmd->clip_rect.z, (LONG)pcmd->clip_rect.w };
|
||||||
|
g_pd3dDevice->SetTexture( 0, (LPDIRECT3DTEXTURE9)pcmd->texture_id );
|
||||||
|
g_pd3dDevice->SetScissorRect(&r);
|
||||||
|
g_pd3dDevice->DrawPrimitive(D3DPT_TRIANGLELIST, vtx_offset, pcmd->vtx_count/3);
|
||||||
|
}
|
||||||
|
vtx_offset += pcmd->vtx_count;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
LRESULT ImGui_ImplDX9_WndProcHandler(HWND 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_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 >= 0 && wParam < 256)
|
||||||
|
io.KeysDown[wParam] = 1;
|
||||||
|
return true;
|
||||||
|
case WM_KEYUP:
|
||||||
|
if (wParam >= 0 && 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;
|
||||||
|
}
|
||||||
|
|
||||||
|
bool ImGui_ImplDX9_Init(void* hwnd, IDirect3DDevice9* device)
|
||||||
|
{
|
||||||
|
g_hWnd = (HWND)hwnd;
|
||||||
|
g_pd3dDevice = device;
|
||||||
|
|
||||||
|
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_UP;
|
||||||
|
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_ImplDX9_RenderDrawLists;
|
||||||
|
io.ImeWindowHandle = g_hWnd;
|
||||||
|
|
||||||
|
if (g_pd3dDevice->CreateVertexBuffer(10000 * sizeof(CUSTOMVERTEX), D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &g_pVB, NULL) < 0)
|
||||||
|
return false;
|
||||||
|
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui_ImplDX9_Shutdown()
|
||||||
|
{
|
||||||
|
ImGui_ImplDX9_InvalidateDeviceObjects();
|
||||||
|
ImGui::Shutdown();
|
||||||
|
g_pd3dDevice = NULL;
|
||||||
|
g_hWnd = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void ImGui_ImplDX9_CreateFontsTexture()
|
||||||
|
{
|
||||||
|
ImGuiIO& io = ImGui::GetIO();
|
||||||
|
|
||||||
|
// Build
|
||||||
|
unsigned char* pixels;
|
||||||
|
int width, height, bytes_per_pixel;
|
||||||
|
io.Fonts->GetTexDataAsAlpha8(&pixels, &width, &height, &bytes_per_pixel);
|
||||||
|
|
||||||
|
// Create DX9 texture
|
||||||
|
LPDIRECT3DTEXTURE9 pTexture = NULL;
|
||||||
|
if (D3DXCreateTexture(g_pd3dDevice, width, height, 1, D3DUSAGE_DYNAMIC, D3DFMT_A8, D3DPOOL_DEFAULT, &pTexture) < 0)
|
||||||
|
{
|
||||||
|
IM_ASSERT(0);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
D3DLOCKED_RECT tex_locked_rect;
|
||||||
|
if (pTexture->LockRect(0, &tex_locked_rect, NULL, 0) != D3D_OK)
|
||||||
|
{
|
||||||
|
IM_ASSERT(0);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
for (int y = 0; y < height; y++)
|
||||||
|
memcpy((unsigned char *)tex_locked_rect.pBits + tex_locked_rect.Pitch * y, pixels + (width * bytes_per_pixel) * y, (width * bytes_per_pixel));
|
||||||
|
pTexture->UnlockRect(0);
|
||||||
|
|
||||||
|
// Store our identifier
|
||||||
|
io.Fonts->TexID = (void *)pTexture;
|
||||||
|
}
|
||||||
|
|
||||||
|
bool ImGui_ImplDX9_CreateDeviceObjects()
|
||||||
|
{
|
||||||
|
if (!g_pd3dDevice)
|
||||||
|
return false;
|
||||||
|
|
||||||
|
if (g_pd3dDevice->CreateVertexBuffer(10000 * sizeof(CUSTOMVERTEX), D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &g_pVB, NULL) < 0)
|
||||||
|
return false;
|
||||||
|
|
||||||
|
ImGui_ImplDX9_CreateFontsTexture();
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui_ImplDX9_InvalidateDeviceObjects()
|
||||||
|
{
|
||||||
|
if (!g_pd3dDevice)
|
||||||
|
return;
|
||||||
|
if (g_pVB)
|
||||||
|
{
|
||||||
|
g_pVB->Release();
|
||||||
|
g_pVB = NULL;
|
||||||
|
}
|
||||||
|
if (LPDIRECT3DTEXTURE9 tex = (LPDIRECT3DTEXTURE9)ImGui::GetIO().Fonts->TexID)
|
||||||
|
{
|
||||||
|
tex->Release();
|
||||||
|
ImGui::GetIO().Fonts->TexID = 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui_ImplDX9_NewFrame()
|
||||||
|
{
|
||||||
|
if (!g_pVB)
|
||||||
|
ImGui_ImplDX9_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.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
|
||||||
|
|
||||||
|
// Start the frame
|
||||||
|
ImGui::NewFrame();
|
||||||
|
}
|
||||||
@ -0,0 +1,19 @@
|
|||||||
|
// ImGui Win32 + DirectX9 binding
|
||||||
|
// https://github.com/ocornut/imgui
|
||||||
|
|
||||||
|
struct IDirect3DDevice9;
|
||||||
|
|
||||||
|
bool ImGui_ImplDX9_Init(void* hwnd, IDirect3DDevice9* device);
|
||||||
|
void ImGui_ImplDX9_Shutdown();
|
||||||
|
void ImGui_ImplDX9_NewFrame();
|
||||||
|
|
||||||
|
// Use if you want to reset your rendering device without losing ImGui state.
|
||||||
|
void ImGui_ImplDX9_InvalidateDeviceObjects();
|
||||||
|
bool ImGui_ImplDX9_CreateDeviceObjects();
|
||||||
|
|
||||||
|
// Handler for Win32 messages, update mouse/keyboard data.
|
||||||
|
// You may or not need this for your implementation, but it can serve as reference for handling inputs.
|
||||||
|
// Commented out to avoid dragging dependencies on <windows.h> types. You can copy the extern declaration in your code.
|
||||||
|
/*
|
||||||
|
extern LRESULT ImGui_ImplDX9_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
|
||||||
|
*/
|
||||||
@ -0,0 +1,348 @@
|
|||||||
|
// ImGui GLFW binding with OpenGL3 + shaders
|
||||||
|
// https://github.com/ocornut/imgui
|
||||||
|
|
||||||
|
#include <imgui.h>
|
||||||
|
#include "imgui_impl_glfw_gl3.h"
|
||||||
|
|
||||||
|
// GL3W/GLFW
|
||||||
|
#include <GL/gl3w.h>
|
||||||
|
#include <GLFW/glfw3.h>
|
||||||
|
#ifdef _MSC_VER
|
||||||
|
#undef APIENTRY
|
||||||
|
#define GLFW_EXPOSE_NATIVE_WIN32
|
||||||
|
#define GLFW_EXPOSE_NATIVE_WGL
|
||||||
|
#include <GLFW/glfw3native.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
// Data
|
||||||
|
static GLFWwindow* g_Window = NULL;
|
||||||
|
static double g_Time = 0.0f;
|
||||||
|
static bool g_MousePressed[3] = { false, false, false };
|
||||||
|
static float g_MouseWheel = 0.0f;
|
||||||
|
static GLuint g_FontTexture = 0;
|
||||||
|
static int g_ShaderHandle = 0, g_VertHandle = 0, g_FragHandle = 0;
|
||||||
|
static int g_AttribLocationTex = 0, g_AttribLocationProjMtx = 0;
|
||||||
|
static int g_AttribLocationPosition = 0, g_AttribLocationUV = 0, g_AttribLocationColor = 0;
|
||||||
|
static size_t g_VboMaxSize = 20000;
|
||||||
|
static unsigned int g_VboHandle = 0, g_VaoHandle = 0;
|
||||||
|
|
||||||
|
// 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)
|
||||||
|
static void ImGui_ImplGlfwGL3_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_count)
|
||||||
|
{
|
||||||
|
if (cmd_lists_count == 0)
|
||||||
|
return;
|
||||||
|
|
||||||
|
// Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled
|
||||||
|
glEnable(GL_BLEND);
|
||||||
|
glBlendEquation(GL_FUNC_ADD);
|
||||||
|
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
||||||
|
glDisable(GL_CULL_FACE);
|
||||||
|
glDisable(GL_DEPTH_TEST);
|
||||||
|
glEnable(GL_SCISSOR_TEST);
|
||||||
|
glActiveTexture(GL_TEXTURE0);
|
||||||
|
|
||||||
|
// Setup orthographic projection matrix
|
||||||
|
const float width = ImGui::GetIO().DisplaySize.x;
|
||||||
|
const float height = ImGui::GetIO().DisplaySize.y;
|
||||||
|
const float ortho_projection[4][4] =
|
||||||
|
{
|
||||||
|
{ 2.0f/width, 0.0f, 0.0f, 0.0f },
|
||||||
|
{ 0.0f, 2.0f/-height, 0.0f, 0.0f },
|
||||||
|
{ 0.0f, 0.0f, -1.0f, 0.0f },
|
||||||
|
{ -1.0f, 1.0f, 0.0f, 1.0f },
|
||||||
|
};
|
||||||
|
glUseProgram(g_ShaderHandle);
|
||||||
|
glUniform1i(g_AttribLocationTex, 0);
|
||||||
|
glUniformMatrix4fv(g_AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
|
||||||
|
|
||||||
|
// Grow our buffer according to what we need
|
||||||
|
size_t total_vtx_count = 0;
|
||||||
|
for (int n = 0; n < cmd_lists_count; n++)
|
||||||
|
total_vtx_count += cmd_lists[n]->vtx_buffer.size();
|
||||||
|
glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
|
||||||
|
size_t neededBufferSize = total_vtx_count * sizeof(ImDrawVert);
|
||||||
|
if (neededBufferSize > g_VboMaxSize)
|
||||||
|
{
|
||||||
|
g_VboMaxSize = neededBufferSize + 5000; // Grow buffer
|
||||||
|
glBufferData(GL_ARRAY_BUFFER, g_VboMaxSize, NULL, GL_STREAM_DRAW);
|
||||||
|
}
|
||||||
|
|
||||||
|
// Copy and convert all vertices into a single contiguous buffer
|
||||||
|
unsigned char* buffer_data = (unsigned char*)glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY);
|
||||||
|
if (!buffer_data)
|
||||||
|
return;
|
||||||
|
for (int n = 0; n < cmd_lists_count; n++)
|
||||||
|
{
|
||||||
|
const ImDrawList* cmd_list = cmd_lists[n];
|
||||||
|
memcpy(buffer_data, &cmd_list->vtx_buffer[0], cmd_list->vtx_buffer.size() * sizeof(ImDrawVert));
|
||||||
|
buffer_data += cmd_list->vtx_buffer.size() * sizeof(ImDrawVert);
|
||||||
|
}
|
||||||
|
glUnmapBuffer(GL_ARRAY_BUFFER);
|
||||||
|
glBindBuffer(GL_ARRAY_BUFFER, 0);
|
||||||
|
glBindVertexArray(g_VaoHandle);
|
||||||
|
|
||||||
|
int cmd_offset = 0;
|
||||||
|
for (int n = 0; n < cmd_lists_count; n++)
|
||||||
|
{
|
||||||
|
const ImDrawList* cmd_list = cmd_lists[n];
|
||||||
|
int vtx_offset = cmd_offset;
|
||||||
|
const ImDrawCmd* pcmd_end = cmd_list->commands.end();
|
||||||
|
for (const ImDrawCmd* pcmd = cmd_list->commands.begin(); pcmd != pcmd_end; pcmd++)
|
||||||
|
{
|
||||||
|
if (pcmd->user_callback)
|
||||||
|
{
|
||||||
|
pcmd->user_callback(cmd_list, pcmd);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->texture_id);
|
||||||
|
glScissor((int)pcmd->clip_rect.x, (int)(height - pcmd->clip_rect.w), (int)(pcmd->clip_rect.z - pcmd->clip_rect.x), (int)(pcmd->clip_rect.w - pcmd->clip_rect.y));
|
||||||
|
glDrawArrays(GL_TRIANGLES, vtx_offset, pcmd->vtx_count);
|
||||||
|
}
|
||||||
|
vtx_offset += pcmd->vtx_count;
|
||||||
|
}
|
||||||
|
cmd_offset = vtx_offset;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Restore modified state
|
||||||
|
glBindVertexArray(0);
|
||||||
|
glUseProgram(0);
|
||||||
|
glDisable(GL_SCISSOR_TEST);
|
||||||
|
glBindTexture(GL_TEXTURE_2D, 0);
|
||||||
|
}
|
||||||
|
|
||||||
|
static const char* ImGui_ImplGlfwGL3_GetClipboardText()
|
||||||
|
{
|
||||||
|
return glfwGetClipboardString(g_Window);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void ImGui_ImplGlfwGL3_SetClipboardText(const char* text)
|
||||||
|
{
|
||||||
|
glfwSetClipboardString(g_Window, text);
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui_ImplGlfwGL3_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods)
|
||||||
|
{
|
||||||
|
if (action == GLFW_PRESS && button >= 0 && button < 3)
|
||||||
|
g_MousePressed[button] = true;
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui_ImplGlfwGL3_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset)
|
||||||
|
{
|
||||||
|
g_MouseWheel += (float)yoffset; // Use fractional mouse wheel, 1.0 unit 5 lines.
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui_ImplGlfwGL3_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods)
|
||||||
|
{
|
||||||
|
ImGuiIO& io = ImGui::GetIO();
|
||||||
|
if (action == GLFW_PRESS)
|
||||||
|
io.KeysDown[key] = true;
|
||||||
|
if (action == GLFW_RELEASE)
|
||||||
|
io.KeysDown[key] = false;
|
||||||
|
io.KeyCtrl = (mods & GLFW_MOD_CONTROL) != 0;
|
||||||
|
io.KeyShift = (mods & GLFW_MOD_SHIFT) != 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui_ImplGlfwGL3_CharCallback(GLFWwindow* window, unsigned int c)
|
||||||
|
{
|
||||||
|
ImGuiIO& io = ImGui::GetIO();
|
||||||
|
if (c > 0 && c < 0x10000)
|
||||||
|
io.AddInputCharacter((unsigned short)c);
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui_ImplGlfwGL3_CreateFontsTexture()
|
||||||
|
{
|
||||||
|
ImGuiIO& io = ImGui::GetIO();
|
||||||
|
|
||||||
|
unsigned char* pixels;
|
||||||
|
int width, height;
|
||||||
|
io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); // Load as RGBA 32-bits for OpenGL3 demo because it is more likely to be compatible with user's existing shader.
|
||||||
|
|
||||||
|
glGenTextures(1, &g_FontTexture);
|
||||||
|
glBindTexture(GL_TEXTURE_2D, g_FontTexture);
|
||||||
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
||||||
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
||||||
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
|
||||||
|
|
||||||
|
// Store our identifier
|
||||||
|
io.Fonts->TexID = (void *)(intptr_t)g_FontTexture;
|
||||||
|
}
|
||||||
|
|
||||||
|
bool ImGui_ImplGlfwGL3_CreateDeviceObjects()
|
||||||
|
{
|
||||||
|
const GLchar *vertex_shader =
|
||||||
|
"#version 330\n"
|
||||||
|
"uniform mat4 ProjMtx;\n"
|
||||||
|
"in vec2 Position;\n"
|
||||||
|
"in vec2 UV;\n"
|
||||||
|
"in vec4 Color;\n"
|
||||||
|
"out vec2 Frag_UV;\n"
|
||||||
|
"out vec4 Frag_Color;\n"
|
||||||
|
"void main()\n"
|
||||||
|
"{\n"
|
||||||
|
" Frag_UV = UV;\n"
|
||||||
|
" Frag_Color = Color;\n"
|
||||||
|
" gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
|
||||||
|
"}\n";
|
||||||
|
|
||||||
|
const GLchar* fragment_shader =
|
||||||
|
"#version 330\n"
|
||||||
|
"uniform sampler2D Texture;\n"
|
||||||
|
"in vec2 Frag_UV;\n"
|
||||||
|
"in vec4 Frag_Color;\n"
|
||||||
|
"out vec4 Out_Color;\n"
|
||||||
|
"void main()\n"
|
||||||
|
"{\n"
|
||||||
|
" Out_Color = Frag_Color * texture( Texture, Frag_UV.st);\n"
|
||||||
|
"}\n";
|
||||||
|
|
||||||
|
g_ShaderHandle = glCreateProgram();
|
||||||
|
g_VertHandle = glCreateShader(GL_VERTEX_SHADER);
|
||||||
|
g_FragHandle = glCreateShader(GL_FRAGMENT_SHADER);
|
||||||
|
glShaderSource(g_VertHandle, 1, &vertex_shader, 0);
|
||||||
|
glShaderSource(g_FragHandle, 1, &fragment_shader, 0);
|
||||||
|
glCompileShader(g_VertHandle);
|
||||||
|
glCompileShader(g_FragHandle);
|
||||||
|
glAttachShader(g_ShaderHandle, g_VertHandle);
|
||||||
|
glAttachShader(g_ShaderHandle, g_FragHandle);
|
||||||
|
glLinkProgram(g_ShaderHandle);
|
||||||
|
|
||||||
|
g_AttribLocationTex = glGetUniformLocation(g_ShaderHandle, "Texture");
|
||||||
|
g_AttribLocationProjMtx = glGetUniformLocation(g_ShaderHandle, "ProjMtx");
|
||||||
|
g_AttribLocationPosition = glGetAttribLocation(g_ShaderHandle, "Position");
|
||||||
|
g_AttribLocationUV = glGetAttribLocation(g_ShaderHandle, "UV");
|
||||||
|
g_AttribLocationColor = glGetAttribLocation(g_ShaderHandle, "Color");
|
||||||
|
|
||||||
|
glGenBuffers(1, &g_VboHandle);
|
||||||
|
glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
|
||||||
|
glBufferData(GL_ARRAY_BUFFER, g_VboMaxSize, NULL, GL_DYNAMIC_DRAW);
|
||||||
|
|
||||||
|
glGenVertexArrays(1, &g_VaoHandle);
|
||||||
|
glBindVertexArray(g_VaoHandle);
|
||||||
|
glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
|
||||||
|
glEnableVertexAttribArray(g_AttribLocationPosition);
|
||||||
|
glEnableVertexAttribArray(g_AttribLocationUV);
|
||||||
|
glEnableVertexAttribArray(g_AttribLocationColor);
|
||||||
|
|
||||||
|
#define OFFSETOF(TYPE, ELEMENT) ((size_t)&(((TYPE *)0)->ELEMENT))
|
||||||
|
glVertexAttribPointer(g_AttribLocationPosition, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)OFFSETOF(ImDrawVert, pos));
|
||||||
|
glVertexAttribPointer(g_AttribLocationUV, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)OFFSETOF(ImDrawVert, uv));
|
||||||
|
glVertexAttribPointer(g_AttribLocationColor, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(ImDrawVert), (GLvoid*)OFFSETOF(ImDrawVert, col));
|
||||||
|
#undef OFFSETOF
|
||||||
|
glBindVertexArray(0);
|
||||||
|
glBindBuffer(GL_ARRAY_BUFFER, 0);
|
||||||
|
|
||||||
|
ImGui_ImplGlfwGL3_CreateFontsTexture();
|
||||||
|
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
|
bool ImGui_ImplGlfwGL3_Init(GLFWwindow* window, bool install_callbacks)
|
||||||
|
{
|
||||||
|
g_Window = window;
|
||||||
|
|
||||||
|
ImGuiIO& io = ImGui::GetIO();
|
||||||
|
io.KeyMap[ImGuiKey_Tab] = GLFW_KEY_TAB; // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
|
||||||
|
io.KeyMap[ImGuiKey_LeftArrow] = GLFW_KEY_LEFT;
|
||||||
|
io.KeyMap[ImGuiKey_RightArrow] = GLFW_KEY_RIGHT;
|
||||||
|
io.KeyMap[ImGuiKey_UpArrow] = GLFW_KEY_UP;
|
||||||
|
io.KeyMap[ImGuiKey_DownArrow] = GLFW_KEY_DOWN;
|
||||||
|
io.KeyMap[ImGuiKey_Home] = GLFW_KEY_HOME;
|
||||||
|
io.KeyMap[ImGuiKey_End] = GLFW_KEY_END;
|
||||||
|
io.KeyMap[ImGuiKey_Delete] = GLFW_KEY_DELETE;
|
||||||
|
io.KeyMap[ImGuiKey_Backspace] = GLFW_KEY_BACKSPACE;
|
||||||
|
io.KeyMap[ImGuiKey_Enter] = GLFW_KEY_ENTER;
|
||||||
|
io.KeyMap[ImGuiKey_Escape] = GLFW_KEY_ESCAPE;
|
||||||
|
io.KeyMap[ImGuiKey_A] = GLFW_KEY_A;
|
||||||
|
io.KeyMap[ImGuiKey_C] = GLFW_KEY_C;
|
||||||
|
io.KeyMap[ImGuiKey_V] = GLFW_KEY_V;
|
||||||
|
io.KeyMap[ImGuiKey_X] = GLFW_KEY_X;
|
||||||
|
io.KeyMap[ImGuiKey_Y] = GLFW_KEY_Y;
|
||||||
|
io.KeyMap[ImGuiKey_Z] = GLFW_KEY_Z;
|
||||||
|
|
||||||
|
io.RenderDrawListsFn = ImGui_ImplGlfwGL3_RenderDrawLists;
|
||||||
|
io.SetClipboardTextFn = ImGui_ImplGlfwGL3_SetClipboardText;
|
||||||
|
io.GetClipboardTextFn = ImGui_ImplGlfwGL3_GetClipboardText;
|
||||||
|
#ifdef _MSC_VER
|
||||||
|
io.ImeWindowHandle = glfwGetWin32Window(g_Window);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
if (install_callbacks)
|
||||||
|
{
|
||||||
|
glfwSetMouseButtonCallback(window, ImGui_ImplGlfwGL3_MouseButtonCallback);
|
||||||
|
glfwSetScrollCallback(window, ImGui_ImplGlfwGL3_ScrollCallback);
|
||||||
|
glfwSetKeyCallback(window, ImGui_ImplGlfwGL3_KeyCallback);
|
||||||
|
glfwSetCharCallback(window, ImGui_ImplGlfwGL3_CharCallback);
|
||||||
|
}
|
||||||
|
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui_ImplGlfwGL3_Shutdown()
|
||||||
|
{
|
||||||
|
if (g_VaoHandle) glDeleteVertexArrays(1, &g_VaoHandle);
|
||||||
|
if (g_VboHandle) glDeleteBuffers(1, &g_VboHandle);
|
||||||
|
g_VaoHandle = 0;
|
||||||
|
g_VboHandle = 0;
|
||||||
|
|
||||||
|
glDetachShader(g_ShaderHandle, g_VertHandle);
|
||||||
|
glDeleteShader(g_VertHandle);
|
||||||
|
g_VertHandle = 0;
|
||||||
|
|
||||||
|
glDetachShader(g_ShaderHandle, g_FragHandle);
|
||||||
|
glDeleteShader(g_FragHandle);
|
||||||
|
g_FragHandle = 0;
|
||||||
|
|
||||||
|
glDeleteProgram(g_ShaderHandle);
|
||||||
|
g_ShaderHandle = 0;
|
||||||
|
|
||||||
|
if (g_FontTexture)
|
||||||
|
{
|
||||||
|
glDeleteTextures(1, &g_FontTexture);
|
||||||
|
ImGui::GetIO().Fonts->TexID = 0;
|
||||||
|
g_FontTexture = 0;
|
||||||
|
}
|
||||||
|
ImGui::Shutdown();
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui_ImplGlfwGL3_NewFrame()
|
||||||
|
{
|
||||||
|
if (!g_FontTexture)
|
||||||
|
ImGui_ImplGlfwGL3_CreateDeviceObjects();
|
||||||
|
|
||||||
|
ImGuiIO& io = ImGui::GetIO();
|
||||||
|
|
||||||
|
// Setup display size (every frame to accommodate for window resizing)
|
||||||
|
int w, h;
|
||||||
|
int display_w, display_h;
|
||||||
|
glfwGetWindowSize(g_Window, &w, &h);
|
||||||
|
glfwGetFramebufferSize(g_Window, &display_w, &display_h);
|
||||||
|
io.DisplaySize = ImVec2((float)display_w, (float)display_h);
|
||||||
|
|
||||||
|
// Setup time step
|
||||||
|
double current_time = glfwGetTime();
|
||||||
|
io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f);
|
||||||
|
g_Time = current_time;
|
||||||
|
|
||||||
|
// Setup inputs
|
||||||
|
// (we already got mouse wheel, keyboard keys & characters from glfw callbacks polled in glfwPollEvents())
|
||||||
|
double mouse_x, mouse_y;
|
||||||
|
glfwGetCursorPos(g_Window, &mouse_x, &mouse_y);
|
||||||
|
mouse_x *= (float)display_w / w; // Convert mouse coordinates to pixels
|
||||||
|
mouse_y *= (float)display_h / h;
|
||||||
|
io.MousePos = ImVec2((float)mouse_x, (float)mouse_y); // Mouse position, in pixels (set to -1,-1 if no mouse / on another screen, etc.)
|
||||||
|
|
||||||
|
for (int i = 0; i < 3; i++)
|
||||||
|
{
|
||||||
|
io.MouseDown[i] = g_MousePressed[i] || glfwGetMouseButton(g_Window, i) != 0; // If a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame.
|
||||||
|
g_MousePressed[i] = false;
|
||||||
|
}
|
||||||
|
|
||||||
|
io.MouseWheel = g_MouseWheel;
|
||||||
|
g_MouseWheel = 0.0f;
|
||||||
|
|
||||||
|
// Start the frame
|
||||||
|
ImGui::NewFrame();
|
||||||
|
}
|
||||||
@ -0,0 +1,20 @@
|
|||||||
|
// ImGui GLFW binding with OpenGL3 + shaders
|
||||||
|
// https://github.com/ocornut/imgui
|
||||||
|
|
||||||
|
struct GLFWwindow;
|
||||||
|
|
||||||
|
bool ImGui_ImplGlfwGL3_Init(GLFWwindow* window, bool install_callbacks);
|
||||||
|
void ImGui_ImplGlfwGL3_Shutdown();
|
||||||
|
void ImGui_ImplGlfwGL3_NewFrame();
|
||||||
|
|
||||||
|
// Use if you want to reset your rendering device without losing ImGui state.
|
||||||
|
void ImGui_ImplGlfwGL3_InvalidateDeviceObjects();
|
||||||
|
bool ImGui_ImplGlfwGL3_CreateDeviceObjects();
|
||||||
|
|
||||||
|
// GLFW callbacks (installed by default if you enable 'install_callbacks' during initialization)
|
||||||
|
// Provided here if you want to chain callbacks.
|
||||||
|
// You can also handle inputs yourself and use those as a reference.
|
||||||
|
void ImGui_ImplGlfwGL3_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods);
|
||||||
|
void ImGui_ImplGlfwGL3_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset);
|
||||||
|
void ImGui_ImplGlFwGL3_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods);
|
||||||
|
void ImGui_ImplGlfwGL3_CharCallback(GLFWwindow* window, unsigned int c);
|
||||||
@ -0,0 +1,252 @@
|
|||||||
|
// ImGui GLFW binding with OpenGL
|
||||||
|
// https://github.com/ocornut/imgui
|
||||||
|
|
||||||
|
#include <imgui.h>
|
||||||
|
#include "imgui_impl_glfw.h"
|
||||||
|
|
||||||
|
// GLFW
|
||||||
|
#include <GLFW/glfw3.h>
|
||||||
|
#ifdef _MSC_VER
|
||||||
|
#undef APIENTRY
|
||||||
|
#define GLFW_EXPOSE_NATIVE_WIN32
|
||||||
|
#define GLFW_EXPOSE_NATIVE_WGL
|
||||||
|
#include <GLFW/glfw3native.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
// Data
|
||||||
|
static GLFWwindow* g_Window = NULL;
|
||||||
|
static double g_Time = 0.0f;
|
||||||
|
static bool g_MousePressed[3] = { false, false, false };
|
||||||
|
static float g_MouseWheel = 0.0f;
|
||||||
|
static GLuint g_FontTexture = 0;
|
||||||
|
|
||||||
|
// 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)
|
||||||
|
static void ImGui_ImplGlfw_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_count)
|
||||||
|
{
|
||||||
|
if (cmd_lists_count == 0)
|
||||||
|
return;
|
||||||
|
|
||||||
|
// We are using the OpenGL fixed pipeline to make the example code simpler to read!
|
||||||
|
// A probable faster way to render would be to collate all vertices from all cmd_lists into a single vertex buffer.
|
||||||
|
// Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, vertex/texcoord/color pointers.
|
||||||
|
glPushAttrib(GL_ENABLE_BIT | GL_COLOR_BUFFER_BIT | GL_TRANSFORM_BIT);
|
||||||
|
glEnable(GL_BLEND);
|
||||||
|
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
||||||
|
glDisable(GL_CULL_FACE);
|
||||||
|
glDisable(GL_DEPTH_TEST);
|
||||||
|
glEnable(GL_SCISSOR_TEST);
|
||||||
|
glEnableClientState(GL_VERTEX_ARRAY);
|
||||||
|
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
|
||||||
|
glEnableClientState(GL_COLOR_ARRAY);
|
||||||
|
glEnable(GL_TEXTURE_2D);
|
||||||
|
|
||||||
|
// Setup orthographic projection matrix
|
||||||
|
const float width = ImGui::GetIO().DisplaySize.x;
|
||||||
|
const float height = ImGui::GetIO().DisplaySize.y;
|
||||||
|
glMatrixMode(GL_PROJECTION);
|
||||||
|
glPushMatrix();
|
||||||
|
glLoadIdentity();
|
||||||
|
glOrtho(0.0f, width, height, 0.0f, -1.0f, +1.0f);
|
||||||
|
glMatrixMode(GL_MODELVIEW);
|
||||||
|
glPushMatrix();
|
||||||
|
glLoadIdentity();
|
||||||
|
|
||||||
|
// Render command lists
|
||||||
|
#define OFFSETOF(TYPE, ELEMENT) ((size_t)&(((TYPE *)0)->ELEMENT))
|
||||||
|
for (int n = 0; n < cmd_lists_count; n++)
|
||||||
|
{
|
||||||
|
const ImDrawList* cmd_list = cmd_lists[n];
|
||||||
|
const unsigned char* vtx_buffer = (const unsigned char*)&cmd_list->vtx_buffer.front();
|
||||||
|
glVertexPointer(2, GL_FLOAT, sizeof(ImDrawVert), (void*)(vtx_buffer + OFFSETOF(ImDrawVert, pos)));
|
||||||
|
glTexCoordPointer(2, GL_FLOAT, sizeof(ImDrawVert), (void*)(vtx_buffer + OFFSETOF(ImDrawVert, uv)));
|
||||||
|
glColorPointer(4, GL_UNSIGNED_BYTE, sizeof(ImDrawVert), (void*)(vtx_buffer + OFFSETOF(ImDrawVert, col)));
|
||||||
|
|
||||||
|
int vtx_offset = 0;
|
||||||
|
for (size_t cmd_i = 0; cmd_i < cmd_list->commands.size(); cmd_i++)
|
||||||
|
{
|
||||||
|
const ImDrawCmd* pcmd = &cmd_list->commands[cmd_i];
|
||||||
|
if (pcmd->user_callback)
|
||||||
|
{
|
||||||
|
pcmd->user_callback(cmd_list, pcmd);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->texture_id);
|
||||||
|
glScissor((int)pcmd->clip_rect.x, (int)(height - pcmd->clip_rect.w), (int)(pcmd->clip_rect.z - pcmd->clip_rect.x), (int)(pcmd->clip_rect.w - pcmd->clip_rect.y));
|
||||||
|
glDrawArrays(GL_TRIANGLES, vtx_offset, pcmd->vtx_count);
|
||||||
|
}
|
||||||
|
vtx_offset += pcmd->vtx_count;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
#undef OFFSETOF
|
||||||
|
|
||||||
|
// Restore modified state
|
||||||
|
glDisableClientState(GL_COLOR_ARRAY);
|
||||||
|
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
|
||||||
|
glDisableClientState(GL_VERTEX_ARRAY);
|
||||||
|
glMatrixMode(GL_MODELVIEW);
|
||||||
|
glPopMatrix();
|
||||||
|
glMatrixMode(GL_PROJECTION);
|
||||||
|
glPopMatrix();
|
||||||
|
glPopAttrib();
|
||||||
|
}
|
||||||
|
|
||||||
|
static const char* ImGui_ImplGlfw_GetClipboardText()
|
||||||
|
{
|
||||||
|
return glfwGetClipboardString(g_Window);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void ImGui_ImplGlfw_SetClipboardText(const char* text)
|
||||||
|
{
|
||||||
|
glfwSetClipboardString(g_Window, text);
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods)
|
||||||
|
{
|
||||||
|
if (action == GLFW_PRESS && button >= 0 && button < 3)
|
||||||
|
g_MousePressed[button] = true;
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset)
|
||||||
|
{
|
||||||
|
g_MouseWheel += (float)yoffset; // Use fractional mouse wheel, 1.0 unit 5 lines.
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui_ImplGlFw_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods)
|
||||||
|
{
|
||||||
|
ImGuiIO& io = ImGui::GetIO();
|
||||||
|
if (action == GLFW_PRESS)
|
||||||
|
io.KeysDown[key] = true;
|
||||||
|
if (action == GLFW_RELEASE)
|
||||||
|
io.KeysDown[key] = false;
|
||||||
|
io.KeyCtrl = (mods & GLFW_MOD_CONTROL) != 0;
|
||||||
|
io.KeyShift = (mods & GLFW_MOD_SHIFT) != 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c)
|
||||||
|
{
|
||||||
|
ImGuiIO& io = ImGui::GetIO();
|
||||||
|
if (c > 0 && c < 0x10000)
|
||||||
|
io.AddInputCharacter((unsigned short)c);
|
||||||
|
}
|
||||||
|
|
||||||
|
bool ImGui_ImplGlfw_CreateDeviceObjects()
|
||||||
|
{
|
||||||
|
ImGuiIO& io = ImGui::GetIO();
|
||||||
|
|
||||||
|
// Build texture
|
||||||
|
unsigned char* pixels;
|
||||||
|
int width, height;
|
||||||
|
io.Fonts->GetTexDataAsAlpha8(&pixels, &width, &height);
|
||||||
|
|
||||||
|
// Create texture
|
||||||
|
glGenTextures(1, &g_FontTexture);
|
||||||
|
glBindTexture(GL_TEXTURE_2D, g_FontTexture);
|
||||||
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
||||||
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
||||||
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, width, height, 0, GL_ALPHA, GL_UNSIGNED_BYTE, pixels);
|
||||||
|
|
||||||
|
// Store our identifier
|
||||||
|
io.Fonts->TexID = (void *)(intptr_t)g_FontTexture;
|
||||||
|
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui_ImplGlfw_InvalidateDeviceObjects()
|
||||||
|
{
|
||||||
|
if (g_FontTexture)
|
||||||
|
{
|
||||||
|
glDeleteTextures(1, &g_FontTexture);
|
||||||
|
ImGui::GetIO().Fonts->TexID = 0;
|
||||||
|
g_FontTexture = 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks)
|
||||||
|
{
|
||||||
|
g_Window = window;
|
||||||
|
|
||||||
|
ImGuiIO& io = ImGui::GetIO();
|
||||||
|
io.KeyMap[ImGuiKey_Tab] = GLFW_KEY_TAB; // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
|
||||||
|
io.KeyMap[ImGuiKey_LeftArrow] = GLFW_KEY_LEFT;
|
||||||
|
io.KeyMap[ImGuiKey_RightArrow] = GLFW_KEY_RIGHT;
|
||||||
|
io.KeyMap[ImGuiKey_UpArrow] = GLFW_KEY_UP;
|
||||||
|
io.KeyMap[ImGuiKey_DownArrow] = GLFW_KEY_DOWN;
|
||||||
|
io.KeyMap[ImGuiKey_Home] = GLFW_KEY_HOME;
|
||||||
|
io.KeyMap[ImGuiKey_End] = GLFW_KEY_END;
|
||||||
|
io.KeyMap[ImGuiKey_Delete] = GLFW_KEY_DELETE;
|
||||||
|
io.KeyMap[ImGuiKey_Backspace] = GLFW_KEY_BACKSPACE;
|
||||||
|
io.KeyMap[ImGuiKey_Enter] = GLFW_KEY_ENTER;
|
||||||
|
io.KeyMap[ImGuiKey_Escape] = GLFW_KEY_ESCAPE;
|
||||||
|
io.KeyMap[ImGuiKey_A] = GLFW_KEY_A;
|
||||||
|
io.KeyMap[ImGuiKey_C] = GLFW_KEY_C;
|
||||||
|
io.KeyMap[ImGuiKey_V] = GLFW_KEY_V;
|
||||||
|
io.KeyMap[ImGuiKey_X] = GLFW_KEY_X;
|
||||||
|
io.KeyMap[ImGuiKey_Y] = GLFW_KEY_Y;
|
||||||
|
io.KeyMap[ImGuiKey_Z] = GLFW_KEY_Z;
|
||||||
|
|
||||||
|
io.RenderDrawListsFn = ImGui_ImplGlfw_RenderDrawLists;
|
||||||
|
io.SetClipboardTextFn = ImGui_ImplGlfw_SetClipboardText;
|
||||||
|
io.GetClipboardTextFn = ImGui_ImplGlfw_GetClipboardText;
|
||||||
|
#ifdef _MSC_VER
|
||||||
|
io.ImeWindowHandle = glfwGetWin32Window(g_Window);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
if (install_callbacks)
|
||||||
|
{
|
||||||
|
glfwSetMouseButtonCallback(window, ImGui_ImplGlfw_MouseButtonCallback);
|
||||||
|
glfwSetScrollCallback(window, ImGui_ImplGlfw_ScrollCallback);
|
||||||
|
glfwSetKeyCallback(window, ImGui_ImplGlFw_KeyCallback);
|
||||||
|
glfwSetCharCallback(window, ImGui_ImplGlfw_CharCallback);
|
||||||
|
}
|
||||||
|
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui_ImplGlfw_Shutdown()
|
||||||
|
{
|
||||||
|
ImGui_ImplGlfw_InvalidateDeviceObjects();
|
||||||
|
ImGui::Shutdown();
|
||||||
|
}
|
||||||
|
|
||||||
|
void ImGui_ImplGlfw_NewFrame()
|
||||||
|
{
|
||||||
|
if (!g_FontTexture)
|
||||||
|
ImGui_ImplGlfw_CreateDeviceObjects();
|
||||||
|
|
||||||
|
ImGuiIO& io = ImGui::GetIO();
|
||||||
|
|
||||||
|
// Setup display size (every frame to accommodate for window resizing)
|
||||||
|
int w, h;
|
||||||
|
int display_w, display_h;
|
||||||
|
glfwGetWindowSize(g_Window, &w, &h);
|
||||||
|
glfwGetFramebufferSize(g_Window, &display_w, &display_h);
|
||||||
|
io.DisplaySize = ImVec2((float)display_w, (float)display_h);
|
||||||
|
|
||||||
|
// Setup time step
|
||||||
|
double current_time = glfwGetTime();
|
||||||
|
io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f);
|
||||||
|
g_Time = current_time;
|
||||||
|
|
||||||
|
// Setup inputs
|
||||||
|
// (we already got mouse wheel, keyboard keys & characters from glfw callbacks polled in glfwPollEvents())
|
||||||
|
double mouse_x, mouse_y;
|
||||||
|
glfwGetCursorPos(g_Window, &mouse_x, &mouse_y);
|
||||||
|
mouse_x *= (float)display_w / w; // Convert mouse coordinates to pixels
|
||||||
|
mouse_y *= (float)display_h / h;
|
||||||
|
io.MousePos = ImVec2((float)mouse_x, (float)mouse_y); // Mouse position, in pixels (set to -1,-1 if no mouse / on another screen, etc.)
|
||||||
|
|
||||||
|
for (int i = 0; i < 3; i++)
|
||||||
|
{
|
||||||
|
io.MouseDown[i] = g_MousePressed[i] || glfwGetMouseButton(g_Window, i) != 0; // If a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame.
|
||||||
|
g_MousePressed[i] = false;
|
||||||
|
}
|
||||||
|
|
||||||
|
io.MouseWheel = g_MouseWheel;
|
||||||
|
g_MouseWheel = 0.0f;
|
||||||
|
|
||||||
|
// Start the frame
|
||||||
|
ImGui::NewFrame();
|
||||||
|
}
|
||||||
@ -0,0 +1,20 @@
|
|||||||
|
// ImGui GLFW binding with OpenGL
|
||||||
|
// https://github.com/ocornut/imgui
|
||||||
|
|
||||||
|
struct GLFWwindow;
|
||||||
|
|
||||||
|
bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks);
|
||||||
|
void ImGui_ImplGlfw_Shutdown();
|
||||||
|
void ImGui_ImplGlfw_NewFrame();
|
||||||
|
|
||||||
|
// Use if you want to reset your rendering device without losing ImGui state.
|
||||||
|
void ImGui_ImplGlfw_InvalidateDeviceObjects();
|
||||||
|
bool ImGui_ImplGlfw_CreateDeviceObjects();
|
||||||
|
|
||||||
|
// GLFW callbacks (installed by default if you enable 'install_callbacks' during initialization)
|
||||||
|
// Provided here if you want to chain callbacks.
|
||||||
|
// You can also handle inputs yourself and use those as a reference.
|
||||||
|
void ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods);
|
||||||
|
void ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset);
|
||||||
|
void ImGui_ImplGlFw_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods);
|
||||||
|
void ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c);
|
||||||
Loading…
Reference in New Issue