From 0e6f288a2f64d923d32442813aa86244670fb255 Mon Sep 17 00:00:00 2001 From: ocornut Date: Sun, 30 Nov 2014 17:26:44 +0000 Subject: [PATCH] DirectX11 example: further tweaks/massaging (-15 lines). Syncing example. --- examples/directx11_example/main.cpp | 73 ++++++++++++----------------- examples/directx9_example/main.cpp | 49 +++++++++---------- examples/opengl_example/main.cpp | 18 +++---- 3 files changed, 61 insertions(+), 79 deletions(-) diff --git a/examples/directx11_example/main.cpp b/examples/directx11_example/main.cpp index 1923f644f..ea9a3411f 100644 --- a/examples/directx11_example/main.cpp +++ b/examples/directx11_example/main.cpp @@ -3,7 +3,7 @@ #include "../shared/stb_image.h" // for .png loading #include "../../imgui.h" -// DirectX +// DirectX 11 #include #include #define DIRECTINPUT_VERSION 0x0800 @@ -115,12 +115,12 @@ static void ImImpl_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_c } // Bind shader and vertex buffers - g_pd3dDeviceImmediateContext->IASetInputLayout(g_pInputLayout); unsigned int stride = sizeof(CUSTOMVERTEX); unsigned int offset = 0; + g_pd3dDeviceImmediateContext->IASetInputLayout(g_pInputLayout); g_pd3dDeviceImmediateContext->IASetVertexBuffers(0, 1, &g_pVB, &stride, &offset); g_pd3dDeviceImmediateContext->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST); - + g_pd3dDeviceImmediateContext->VSSetShader(g_pVertexShader, NULL, 0); g_pd3dDeviceImmediateContext->VSSetConstantBuffers(0, 1, &g_pVertexConstantBuffer); @@ -130,8 +130,7 @@ static void ImImpl_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_c // Setup render state const float blendFactor[4] = { 0.f, 0.f, 0.f, 0.f }; - const UINT sampleMask = 0xffffffff; - g_pd3dDeviceImmediateContext->OMSetBlendState(g_blendState, blendFactor, sampleMask); + g_pd3dDeviceImmediateContext->OMSetBlendState(g_blendState, blendFactor, 0xffffffff); // Render command lists int vtx_offset = 0; @@ -155,7 +154,7 @@ static void ImImpl_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_c g_pd3dDeviceImmediateContext->VSSetShader(NULL, NULL, 0); } -HRESULT InitD3D(HWND hWnd) +HRESULT InitDeviceD3D(HWND hWnd) { // Setup swap chain DXGI_SWAP_CHAIN_DESC sd; @@ -198,10 +197,7 @@ HRESULT InitD3D(HWND hWnd) RSDesc.DepthClipEnable = TRUE; RSDesc.ScissorEnable = TRUE; RSDesc.AntialiasedLineEnable = FALSE; - if (sd.SampleDesc.Count > 1) - RSDesc.MultisampleEnable = TRUE; - else - RSDesc.MultisampleEnable = FALSE; + RSDesc.MultisampleEnable = (sd.SampleDesc.Count > 1) ? TRUE : FALSE; ID3D11RasterizerState* pRState = NULL; g_pd3dDevice->CreateRasterizerState(&RSDesc, &pRState); @@ -224,18 +220,11 @@ HRESULT InitD3D(HWND hWnd) // Create the vertex shader { - ID3D10Blob * pErrorBlob = NULL; - D3DCompile(vertexShader, strlen(vertexShader), NULL, NULL, NULL, "main", "vs_5_0", 0, 0, &g_pVertexShaderBlob, &pErrorBlob); - if (g_pVertexShaderBlob == NULL) - { - //const char* pError = (const char*)pErrorBlob->GetBufferPointer(); - pErrorBlob->Release(); + 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 E_FAIL; - } if (g_pd3dDevice->CreateVertexShader((DWORD*)g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize(), NULL, &g_pVertexShader) != S_OK) return E_FAIL; - if (pErrorBlob) - pErrorBlob->Release(); // Create the input layout D3D11_INPUT_ELEMENT_DESC localLayout[] = { @@ -261,18 +250,11 @@ HRESULT InitD3D(HWND hWnd) // Create the pixel shader { - ID3D10Blob * pErrorBlob; - D3DCompile(pixelShader, strlen(pixelShader), NULL, NULL, NULL, "main", "ps_5_0", 0, 0, &g_pPixelShaderBlob, &pErrorBlob); - if (g_pPixelShaderBlob == NULL) - { - //const char* pError = (const char*)pErrorBlob->GetBufferPointer(); - pErrorBlob->Release(); + 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 E_FAIL; - } if (g_pd3dDevice->CreatePixelShader((DWORD*)g_pPixelShaderBlob->GetBufferPointer(), g_pPixelShaderBlob->GetBufferSize(), NULL, &g_pPixelShader) != S_OK) return E_FAIL; - if (pErrorBlob) - pErrorBlob->Release(); } // Create the blending setup @@ -294,14 +276,16 @@ HRESULT InitD3D(HWND hWnd) return S_OK; } -void Cleanup() +void CleanupDevice() { if (g_pd3dDeviceImmediateContext) g_pd3dDeviceImmediateContext->ClearState(); + // InitImGui if (g_pFontSampler) g_pFontSampler->Release(); if (g_pFontTextureView) g_pFontTextureView->Release(); if (g_pVB) g_pVB->Release(); + // InitDeviceD3D if (g_blendState) g_blendState->Release(); if (g_pPixelShader) g_pPixelShader->Release(); if (g_pPixelShaderBlob) g_pPixelShaderBlob->Release(); @@ -346,7 +330,7 @@ LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) io.AddInputCharacter((unsigned short)wParam); return true; case WM_DESTROY: - Cleanup(); + CleanupDevice(); PostQuitMessage(0); return 0; } @@ -357,12 +341,14 @@ void InitImGui() { RECT rect; GetClientRect(hWnd, &rect); + int display_w = (int)(rect.right - rect.left); + int display_h = (int)(rect.bottom - rect.top); ImGuiIO& io = ImGui::GetIO(); - io.DisplaySize = ImVec2((float)(rect.right - rect.left), (float)(rect.bottom - rect.top)); // Display size, in pixels. For clamping windows positions. - io.DeltaTime = 1.0f/60.0f; // Time elapsed since last frame, in seconds (in this sample app we'll override this every frame because our timestep is variable) - io.PixelCenterOffset = 0.0f; // Align Direct3D Texels - 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.DisplaySize = ImVec2((float)display_w, (float)display_h); // Display size, in pixels. For clamping windows positions. + io.DeltaTime = 1.0f/60.0f; // Time elapsed since last frame, in seconds (in this sample app we'll override this every frame because our time step is variable) + io.PixelCenterOffset = 0.0f; // Align Direct3D Texels + 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; @@ -385,13 +371,11 @@ void InitImGui() { D3D11_BUFFER_DESC bufferDesc; memset(&bufferDesc, 0, sizeof(D3D11_BUFFER_DESC)); - bufferDesc.Usage = D3D11_USAGE_DYNAMIC; bufferDesc.ByteWidth = 10000 * sizeof(CUSTOMVERTEX); bufferDesc.BindFlags = D3D11_BIND_VERTEX_BUFFER; bufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE; bufferDesc.MiscFlags = 0; - if (g_pd3dDevice->CreateBuffer(&bufferDesc, NULL, &g_pVB) < 0) { IM_ASSERT(0); @@ -428,7 +412,7 @@ void InitImGui() subResource.SysMemSlicePitch = 0; g_pd3dDevice->CreateTexture2D(&desc, &subResource, &pTexture); - // create texture view + // Create texture view D3D11_SHADER_RESOURCE_VIEW_DESC srvDesc; ZeroMemory(&srvDesc, sizeof(srvDesc)); srvDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM; @@ -439,7 +423,7 @@ void InitImGui() pTexture->Release(); } - // create texture sampler + // Create texture sampler { D3D11_SAMPLER_DESC desc; ZeroMemory(&desc, sizeof(desc)); @@ -456,17 +440,17 @@ void InitImGui() } INT64 ticks_per_second = 0; -INT64 time = 0; +INT64 last_time = 0; void UpdateImGui() { ImGuiIO& io = ImGui::GetIO(); - // Setup timestep + // Setup time step INT64 current_time; QueryPerformanceCounter((LARGE_INTEGER *)¤t_time); - io.DeltaTime = (float)(current_time - time) / ticks_per_second; - time = current_time; + io.DeltaTime = (float)(current_time - last_time) / ticks_per_second; + last_time = current_time; // Setup inputs // (we already got mouse position, buttons, wheel from the window message callback) @@ -495,12 +479,13 @@ int WINAPI wWinMain(HINSTANCE hInst, HINSTANCE, LPWSTR, int) if (!QueryPerformanceFrequency((LARGE_INTEGER *)&ticks_per_second)) return 1; - if (!QueryPerformanceCounter((LARGE_INTEGER *)&time)) + if (!QueryPerformanceCounter((LARGE_INTEGER *)&last_time)) return 1; // Initialize Direct3D - if (InitD3D(hWnd) < 0) + if (InitDeviceD3D(hWnd) < 0) { + CleanupDevice(); UnregisterClass("ImGui Example", wc.hInstance); return 1; } diff --git a/examples/directx9_example/main.cpp b/examples/directx9_example/main.cpp index ac8c2105e..adb2bf307 100644 --- a/examples/directx9_example/main.cpp +++ b/examples/directx9_example/main.cpp @@ -1,7 +1,7 @@ #include #include "../../imgui.h" -// DirectX +// DirectX 9 #include #define DIRECTINPUT_VERSION 0x0800 #include @@ -103,7 +103,7 @@ static void ImImpl_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_c } } -HRESULT InitD3D(HWND hWnd) +HRESULT InitDeviceD3D(HWND hWnd) { if (NULL == (g_pD3D = Direct3DCreate9(D3D_SDK_VERSION))) return E_FAIL; @@ -124,16 +124,15 @@ HRESULT InitD3D(HWND hWnd) return S_OK; } -void Cleanup() +void CleanupDevice() { - if (g_pTexture != NULL) - g_pTexture->Release(); + // InitImGui + if (g_pVB) g_pVB->Release(); - if (g_pd3dDevice != NULL) - g_pd3dDevice->Release(); - - if (g_pD3D != NULL) - g_pD3D->Release(); + // InitDeviceD3D + if (g_pTexture) g_pTexture->Release(); + if (g_pd3dDevice) g_pd3dDevice->Release(); + if (g_pD3D) g_pD3D->Release(); } LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) @@ -167,7 +166,7 @@ LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) io.AddInputCharacter((unsigned short)wParam); return true; case WM_DESTROY: - Cleanup(); + CleanupDevice(); PostQuitMessage(0); return 0; } @@ -178,12 +177,14 @@ void InitImGui() { RECT rect; GetClientRect(hWnd, &rect); + int display_w = (int)(rect.right - rect.left); + int display_h = (int)(rect.bottom - rect.top); ImGuiIO& io = ImGui::GetIO(); - io.DisplaySize = ImVec2((float)(rect.right - rect.left), (float)(rect.bottom - rect.top)); // Display size, in pixels. For clamping windows positions. - io.DeltaTime = 1.0f/60.0f; // Time elapsed since last frame, in seconds (in this sample app we'll override this every frame because our timestep is variable) - io.PixelCenterOffset = 0.0f; // Align Direct3D Texels - 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.DisplaySize = ImVec2((float)display_w, (float)display_h); // Display size, in pixels. For clamping windows positions. + io.DeltaTime = 1.0f/60.0f; // Time elapsed since last frame, in seconds (in this sample app we'll override this every frame because our time step is variable) + io.PixelCenterOffset = 0.0f; // Align Direct3D Texels + 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; @@ -222,17 +223,17 @@ void InitImGui() } INT64 ticks_per_second = 0; -INT64 time = 0; +INT64 last_time = 0; void UpdateImGui() { ImGuiIO& io = ImGui::GetIO(); - // Setup timestep + // Setup time step INT64 current_time; QueryPerformanceCounter((LARGE_INTEGER *)¤t_time); - io.DeltaTime = (float)(current_time - time) / ticks_per_second; - time = current_time; + io.DeltaTime = (float)(current_time - last_time) / ticks_per_second; + last_time = current_time; // Setup inputs // (we already got mouse position, buttons, wheel from the window message callback) @@ -261,14 +262,13 @@ int WINAPI wWinMain(HINSTANCE hInst, HINSTANCE, LPWSTR, int) if (!QueryPerformanceFrequency((LARGE_INTEGER *)&ticks_per_second)) return 1; - if (!QueryPerformanceCounter((LARGE_INTEGER *)&time)) + if (!QueryPerformanceCounter((LARGE_INTEGER *)&last_time)) return 1; // Initialize Direct3D - if (InitD3D(hWnd) < 0) + if (InitDeviceD3D(hWnd) < 0) { - if (g_pVB) - g_pVB->Release(); + CleanupDevice(); UnregisterClass(L"ImGui Example", wc.hInstance); return 1; } @@ -347,9 +347,6 @@ int WINAPI wWinMain(HINSTANCE hInst, HINSTANCE, LPWSTR, int) ImGui::Shutdown(); - if (g_pVB) - g_pVB->Release(); - UnregisterClass(L"ImGui Example", wc.hInstance); return 0; } diff --git a/examples/opengl_example/main.cpp b/examples/opengl_example/main.cpp index 2fce58f0e..22e2b1b0e 100644 --- a/examples/opengl_example/main.cpp +++ b/examples/opengl_example/main.cpp @@ -156,17 +156,17 @@ void InitGL() void InitImGui() { int w, h; - int fb_w, fb_h; + int display_w, display_h; glfwGetWindowSize(window, &w, &h); - glfwGetFramebufferSize(window, &fb_w, &fb_h); - mousePosScale.x = (float)fb_w / w; // Some screens e.g. Retina display have framebuffer size != from window size, and mouse inputs are given in window/screen coordinates. - mousePosScale.y = (float)fb_h / h; + glfwGetFramebufferSize(window, &display_w, &display_h); + mousePosScale.x = (float)display_w / w; // Some screens e.g. Retina display have framebuffer size != from window size, and mouse inputs are given in window/screen coordinates. + mousePosScale.y = (float)display_h / h; ImGuiIO& io = ImGui::GetIO(); - io.DisplaySize = ImVec2((float)fb_w, (float)fb_h); // Display size, in pixels. For clamping windows positions. - io.DeltaTime = 1.0f/60.0f; // Time elapsed since last frame, in seconds (in this sample app we'll override this every frame because our timestep is variable) - io.PixelCenterOffset = 0.0f; // Align OpenGL texels - io.KeyMap[ImGuiKey_Tab] = GLFW_KEY_TAB; // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array. + io.DisplaySize = ImVec2((float)display_w, (float)display_h); // Display size, in pixels. For clamping windows positions. + io.DeltaTime = 1.0f/60.0f; // Time elapsed since last frame, in seconds (in this sample app we'll override this every frame because our time step is variable) + io.PixelCenterOffset = 0.0f; // Align OpenGL texels + 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; @@ -230,7 +230,7 @@ void UpdateImGui() { ImGuiIO& io = ImGui::GetIO(); - // Setup timestep + // Setup time step static double time = 0.0f; const double current_time = glfwGetTime(); io.DeltaTime = (float)(current_time - time);