Mergul
946fbf2934
*updated build scripts *removed tls variables from code (needed to support WebAssembly) *some mmutils tweaks *some fixes *pthread TLS thread ID implementation -added Atomic file (reimplementation of atomics templates for emscripten) -added emscripten support to ecs.std
508 lines
No EOL
22 KiB
D
508 lines
No EOL
22 KiB
D
module ecs_utils.imgui_bind;
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import bindbc.sdl;
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import cimgui.cimgui;
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version(WebAssembly)
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{
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extern(C):
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bool ImGui_ImplOpenGL3_Init(const char* glsl_version = null);
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void ImGui_ImplOpenGL3_Shutdown();
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void ImGui_ImplOpenGL3_NewFrame();
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void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data);
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bool ImGui_ImplSDL2_InitForOpenGL(SDL_Window* window, void* sdl_gl_context);
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bool ImGui_ImplSDL2_InitForVulkan(SDL_Window* window);
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bool ImGui_ImplSDL2_InitForD3D(SDL_Window* window);
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void ImGui_ImplSDL2_Shutdown();
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void ImGui_ImplSDL2_NewFrame(SDL_Window* window);
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bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event);
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}
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else :
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import bindbc.sdl;
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import glad.gl.gl;
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import cimgui.cimgui;
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extern(C):
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__gshared SDL_Window* g_Window;
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__gshared ulong g_Time;
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__gshared bool[3] g_MousePressed;
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__gshared SDL_Cursor*[ImGuiMouseCursor_COUNT] g_MouseCursors;
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__gshared char* g_ClipboardTextData;
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__gshared GLuint g_FontTexture = 0;
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const (char)* ImGuiImplSDL2GetClipboardText(void*)
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{
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if (g_ClipboardTextData)
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SDL_free(g_ClipboardTextData);
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g_ClipboardTextData = SDL_GetClipboardText();
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return g_ClipboardTextData;
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}
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void ImGuiImplSDL2SetClipboardText(void*, const char* text)
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{
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SDL_SetClipboardText(text);
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}
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bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
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{
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ImGuiIO* io = igGetIO();
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switch (event.type)
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{
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case SDL_MOUSEWHEEL:
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{
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if (event.wheel.x > 0) io.MouseWheelH += 1;
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if (event.wheel.x < 0) io.MouseWheelH -= 1;
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if (event.wheel.y > 0) io.MouseWheel += 1;
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if (event.wheel.y < 0) io.MouseWheel -= 1;
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return true;
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}
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case SDL_MOUSEBUTTONDOWN:
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{
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if (event.button.button == SDL_BUTTON_LEFT) g_MousePressed[0] = true;
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if (event.button.button == SDL_BUTTON_RIGHT) g_MousePressed[1] = true;
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if (event.button.button == SDL_BUTTON_MIDDLE) g_MousePressed[2] = true;
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return true;
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}
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case SDL_TEXTINPUT:
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{
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ImGuiIO_AddInputCharactersUTF8(io,event.text.text.ptr);
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return true;
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}
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case SDL_KEYDOWN:
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case SDL_KEYUP:
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{
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int key = event.key.keysym.scancode;
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//IM_ASSERT(key >= 0 && key < IM_ARRAYSIZE(io.KeysDown));
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io.KeysDown[key] = (event.type == SDL_KEYDOWN);
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io.KeyShift = ((SDL_GetModState() & KMOD_SHIFT) != 0);
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io.KeyCtrl = ((SDL_GetModState() & KMOD_CTRL) != 0);
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io.KeyAlt = ((SDL_GetModState() & KMOD_ALT) != 0);
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io.KeySuper = ((SDL_GetModState() & KMOD_GUI) != 0);
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return true;
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}
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default:break;
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}
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return false;
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}
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bool ImGuiImplSDL2Init(SDL_Window* window)
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{
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g_Window = window;
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// Setup back-end capabilities flags
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ImGuiIO* io = igGetIO();
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io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors; // We can honor GetMouseCursor() values (optional)
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io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos; // We can honor io.WantSetMousePos requests (optional, rarely used)
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io.BackendPlatformName = "imgui_impl_sdl";
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// Keyboard mapping. ImGui will use those indices to peek into the io.KeysDown[] array.
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io.KeyMap[ImGuiKey_Tab] = SDL_SCANCODE_TAB;
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io.KeyMap[ImGuiKey_LeftArrow] = SDL_SCANCODE_LEFT;
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io.KeyMap[ImGuiKey_RightArrow] = SDL_SCANCODE_RIGHT;
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io.KeyMap[ImGuiKey_UpArrow] = SDL_SCANCODE_UP;
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io.KeyMap[ImGuiKey_DownArrow] = SDL_SCANCODE_DOWN;
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io.KeyMap[ImGuiKey_PageUp] = SDL_SCANCODE_PAGEUP;
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io.KeyMap[ImGuiKey_PageDown] = SDL_SCANCODE_PAGEDOWN;
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io.KeyMap[ImGuiKey_Home] = SDL_SCANCODE_HOME;
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io.KeyMap[ImGuiKey_End] = SDL_SCANCODE_END;
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io.KeyMap[ImGuiKey_Insert] = SDL_SCANCODE_INSERT;
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io.KeyMap[ImGuiKey_Delete] = SDL_SCANCODE_DELETE;
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io.KeyMap[ImGuiKey_Backspace] = SDL_SCANCODE_BACKSPACE;
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io.KeyMap[ImGuiKey_Space] = SDL_SCANCODE_SPACE;
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io.KeyMap[ImGuiKey_Enter] = SDL_SCANCODE_RETURN;
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io.KeyMap[ImGuiKey_Escape] = SDL_SCANCODE_ESCAPE;
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io.KeyMap[ImGuiKey_KeyPadEnter] = SDL_SCANCODE_RETURN2;
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io.KeyMap[ImGuiKey_A] = SDL_SCANCODE_A;
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io.KeyMap[ImGuiKey_C] = SDL_SCANCODE_C;
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io.KeyMap[ImGuiKey_V] = SDL_SCANCODE_V;
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io.KeyMap[ImGuiKey_X] = SDL_SCANCODE_X;
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io.KeyMap[ImGuiKey_Y] = SDL_SCANCODE_Y;
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io.KeyMap[ImGuiKey_Z] = SDL_SCANCODE_Z;
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io.SetClipboardTextFn = &ImGuiImplSDL2SetClipboardText;
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io.GetClipboardTextFn = &ImGuiImplSDL2GetClipboardText;
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io.ClipboardUserData = null;
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g_MouseCursors[ImGuiMouseCursor_Arrow] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);
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g_MouseCursors[ImGuiMouseCursor_TextInput] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_IBEAM);
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g_MouseCursors[ImGuiMouseCursor_ResizeAll] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEALL);
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g_MouseCursors[ImGuiMouseCursor_ResizeNS] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENS);
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g_MouseCursors[ImGuiMouseCursor_ResizeEW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEWE);
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g_MouseCursors[ImGuiMouseCursor_ResizeNESW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENESW);
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g_MouseCursors[ImGuiMouseCursor_ResizeNWSE] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENWSE);
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g_MouseCursors[ImGuiMouseCursor_Hand] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_HAND);
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//#ifdef _WIN32
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version(WebAssembly)
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{
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}
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else version(Windows)
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{
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SDL_SysWMinfo wmInfo;
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SDL_VERSION(&wmInfo.version_);
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SDL_GetWindowWMInfo(window, &wmInfo);
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io.ImeWindowHandle = wmInfo.info.win.window;
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}
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//#else
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//(void)window;
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//#endif
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return true;
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}
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bool ImGuiImplSDL2InitForOpenGL(SDL_Window* window, void* sdl_gl_context)
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{
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//(void)sdl_gl_context; // Viewport branch will need this.
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return ImGuiImplSDL2Init(window);
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}
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void ImGuiImplSDL2Shutdown()
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{
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g_Window = null;
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// Destroy last known clipboard data
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if (g_ClipboardTextData)
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SDL_free(g_ClipboardTextData);
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g_ClipboardTextData = null;
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// Destroy SDL mouse cursors
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for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++)
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SDL_FreeCursor(g_MouseCursors[cursor_n]);
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//memset(g_MouseCursors, 0, sizeof(g_MouseCursors));
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}
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static void ImGui_ImplSDL2_UpdateMousePosAndButtons()
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{
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ImGuiIO* io = igGetIO();
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// Set OS mouse position if requested (rarely used, only when ImGuiConfigFlags_NavEnableSetMousePos is enabled by user)
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if (io.WantSetMousePos)
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SDL_WarpMouseInWindow(g_Window, cast(int)io.MousePos.x, cast(int)io.MousePos.y);
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else
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io.MousePos = ImVec2(-float.max, -float.max);
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int mx, my;
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Uint32 mouse_buttons = SDL_GetMouseState(&mx, &my);
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io.MouseDown[0] = g_MousePressed[0] || (mouse_buttons & (SDL_PRESSED<<(SDL_BUTTON_LEFT-1))) != 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.
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io.MouseDown[1] = g_MousePressed[1] || (mouse_buttons & (SDL_PRESSED<<(SDL_BUTTON_RIGHT-1))) != 0;
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io.MouseDown[2] = g_MousePressed[2] || (mouse_buttons & (SDL_PRESSED<<(SDL_BUTTON_MIDDLE-1))) != 0;
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g_MousePressed[0] = g_MousePressed[1] = g_MousePressed[2] = false;
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//#if SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE && !defined(__EMSCRIPTEN__) && !defined(__ANDROID__) && !(defined(__APPLE__) && TARGET_OS_IOS)
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/*SDL_Window* focused_window = SDL_GetKeyboardFocus();
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if (g_Window == focused_window)
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{
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// SDL_GetMouseState() gives mouse position seemingly based on the last window entered/focused(?)
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// The creation of a new windows at runtime and SDL_CaptureMouse both seems to severely mess up with that, so we retrieve that position globally.
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int wx, wy;
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SDL_GetWindowPosition(focused_window, &wx, &wy);
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SDL_GetGlobalMouseState(&mx, &my);
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mx -= wx;
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my -= wy;
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io.MousePos = ImVec2((float)mx, (float)my);
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}
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// SDL_CaptureMouse() let the OS know e.g. that our imgui drag outside the SDL window boundaries shouldn't e.g. trigger the OS window resize cursor.
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// The function is only supported from SDL 2.0.4 (released Jan 2016)
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bool any_mouse_button_down = ImGui::IsAnyMouseDown();
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SDL_CaptureMouse(any_mouse_button_down ? SDL_TRUE : SDL_FALSE);
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//#else*/
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if (SDL_GetWindowFlags(g_Window) & SDL_WINDOW_INPUT_FOCUS)
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io.MousePos = ImVec2(cast(float)mx, cast(float)my);
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//#endif
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}
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static void ImGui_ImplSDL2_UpdateMouseCursor()
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{
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ImGuiIO* io = igGetIO();
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if (io.ConfigFlags & ImGuiConfigFlags_NoMouseCursorChange)
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return;
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ImGuiMouseCursor imgui_cursor = igGetMouseCursor();
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if (io.MouseDrawCursor || 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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SDL_ShowCursor(SDL_FALSE);
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}
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else
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{
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// Show OS mouse cursor
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SDL_SetCursor(g_MouseCursors[imgui_cursor] ? g_MouseCursors[imgui_cursor] : g_MouseCursors[ImGuiMouseCursor_Arrow]);
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SDL_ShowCursor(SDL_TRUE);
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}
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}
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static void ImGui_ImplSDL2_UpdateGamepads()
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{
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ImGuiIO* io = igGetIO();
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//memset(io.NavInputs, 0, sizeof(io.NavInputs));
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if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0)
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return;
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// Get gamepad
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SDL_GameController* game_controller = SDL_GameControllerOpen(0);
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if (!game_controller)
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{
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io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad;
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return;
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}
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// Update gamepad inputs
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/*#define MAP_BUTTON(NAV_NO, BUTTON_NO) { io.NavInputs[NAV_NO] = (SDL_GameControllerGetButton(game_controller, BUTTON_NO) != 0) ? 1.0f : 0.0f; }
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#define MAP_ANALOG(NAV_NO, AXIS_NO, V0, V1) { float vn = (float)(SDL_GameControllerGetAxis(game_controller, AXIS_NO) - V0) / (float)(V1 - V0); if (vn > 1.0f) vn = 1.0f; if (vn > 0.0f && io.NavInputs[NAV_NO] < vn) io.NavInputs[NAV_NO] = vn; }
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const int thumb_dead_zone = 8000; // SDL_gamecontroller.h suggests using this value.
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MAP_BUTTON(ImGuiNavInput_Activate, SDL_CONTROLLER_BUTTON_A); // Cross / A
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MAP_BUTTON(ImGuiNavInput_Cancel, SDL_CONTROLLER_BUTTON_B); // Circle / B
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MAP_BUTTON(ImGuiNavInput_Menu, SDL_CONTROLLER_BUTTON_X); // Square / X
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MAP_BUTTON(ImGuiNavInput_Input, SDL_CONTROLLER_BUTTON_Y); // Triangle / Y
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MAP_BUTTON(ImGuiNavInput_DpadLeft, SDL_CONTROLLER_BUTTON_DPAD_LEFT); // D-Pad Left
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MAP_BUTTON(ImGuiNavInput_DpadRight, SDL_CONTROLLER_BUTTON_DPAD_RIGHT); // D-Pad Right
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MAP_BUTTON(ImGuiNavInput_DpadUp, SDL_CONTROLLER_BUTTON_DPAD_UP); // D-Pad Up
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MAP_BUTTON(ImGuiNavInput_DpadDown, SDL_CONTROLLER_BUTTON_DPAD_DOWN); // D-Pad Down
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MAP_BUTTON(ImGuiNavInput_FocusPrev, SDL_CONTROLLER_BUTTON_LEFTSHOULDER); // L1 / LB
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MAP_BUTTON(ImGuiNavInput_FocusNext, SDL_CONTROLLER_BUTTON_RIGHTSHOULDER); // R1 / RB
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MAP_BUTTON(ImGuiNavInput_TweakSlow, SDL_CONTROLLER_BUTTON_LEFTSHOULDER); // L1 / LB
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MAP_BUTTON(ImGuiNavInput_TweakFast, SDL_CONTROLLER_BUTTON_RIGHTSHOULDER); // R1 / RB
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MAP_ANALOG(ImGuiNavInput_LStickLeft, SDL_CONTROLLER_AXIS_LEFTX, -thumb_dead_zone, -32768);
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MAP_ANALOG(ImGuiNavInput_LStickRight, SDL_CONTROLLER_AXIS_LEFTX, +thumb_dead_zone, +32767);
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MAP_ANALOG(ImGuiNavInput_LStickUp, SDL_CONTROLLER_AXIS_LEFTY, -thumb_dead_zone, -32767);
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MAP_ANALOG(ImGuiNavInput_LStickDown, SDL_CONTROLLER_AXIS_LEFTY, +thumb_dead_zone, +32767);
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io.BackendFlags |= ImGuiBackendFlags_HasGamepad;
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#undef MAP_BUTTON
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#undef MAP_ANALOG*/
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}
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__gshared private long frequency;
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void ImGuiImplSDL2NewFrame(SDL_Window* window)
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{
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ImGuiIO* io = igGetIO();
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assert(ImFontAtlas_IsBuilt(io.Fonts), "Font atlas not built! It is generally built by the renderer back-end. Missing call to renderer _NewFrame() function? e.g. ImGui_ImplOpenGL3_NewFrame().");
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// Setup display size (every frame to accommodate for window resizing)
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int w, h;
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int display_w, display_h;
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SDL_GetWindowSize(window, &w, &h);
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SDL_GL_GetDrawableSize(window, &display_w, &display_h);
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io.DisplaySize = ImVec2(cast(float)w, cast(float)h);
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if (w > 0 && h > 0)
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io.DisplayFramebufferScale = ImVec2(cast(float)display_w / w, cast(float)display_h / h);
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// Setup time step (we don't use SDL_GetTicks() because it is using millisecond resolution)
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frequency = SDL_GetPerformanceFrequency();
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long current_time = SDL_GetPerformanceCounter();
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io.DeltaTime = g_Time > 0 ? cast(float)(cast(double)(current_time - g_Time) / frequency) : cast(float)(1.0f / 60.0f);
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g_Time = current_time;
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ImGui_ImplSDL2_UpdateMousePosAndButtons();
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ImGui_ImplSDL2_UpdateMouseCursor();
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// Update game controllers (if enabled and available)
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ImGui_ImplSDL2_UpdateGamepads();
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}
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bool ImGuiImplOpenGL2Init()
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{
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// Setup back-end capabilities flags
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ImGuiIO* io = igGetIO();
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io.BackendRendererName = "imgui_impl_opengl2";
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return true;
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}
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void ImGuiImplOpenGL2Shutdown()
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{
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ImGuiImplOpenGL2DestroyDeviceObjects();
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}
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void ImGuiImplOpenGL2NewFrame()
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{
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if (!g_FontTexture)
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ImGuiImplOpenGL2CreateDeviceObjects();
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}
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static void ImGuiImplOpenGL2SetupRenderState(ImDrawData* draw_data, int fb_width, int fb_height)
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{
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// Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, vertex/texcoord/color pointers, polygon fill.
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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glDisable(GL_CULL_FACE);
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glDisable(GL_DEPTH_TEST);
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//glDisable(GL_LIGHTING);
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//glDisable(GL_COLOR_MATERIAL);
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glEnable(GL_SCISSOR_TEST);
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glEnableClientState(GL_VERTEX_ARRAY);
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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glEnableClientState(GL_COLOR_ARRAY);
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glEnable(GL_TEXTURE_2D);
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glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
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// If you are using this code with non-legacy OpenGL header/contexts (which you should not, prefer using imgui_impl_opengl3.cpp!!),
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// you may need to backup/reset/restore current shader using the lines below. DO NOT MODIFY THIS FILE! Add the code in your calling function:
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// GLint last_program;
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// glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
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// glUseProgram(0);
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// ImGui_ImplOpenGL2_RenderDrawData(...);
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// glUseProgram(last_program)
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// Setup viewport, orthographic projection matrix
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// Our visible imgui space lies from draw_data.DisplayPos (top left) to draw_data.DisplayPos+data_data.DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
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glViewport(0, 0, cast(GLsizei)fb_width, cast(GLsizei)fb_height);
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glMatrixMode(GL_PROJECTION);
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glPushMatrix();
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glLoadIdentity();
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glOrtho(draw_data.DisplayPos.x, draw_data.DisplayPos.x + draw_data.DisplaySize.x, draw_data.DisplayPos.y + draw_data.DisplaySize.y, draw_data.DisplayPos.y, -1.0f, +1.0f);
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glMatrixMode(GL_MODELVIEW);
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glPushMatrix();
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glLoadIdentity();
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}
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// OpenGL2 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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// Note that this implementation is little overcomplicated because we are saving/setting up/restoring every OpenGL state explicitly, in order to be able to run within any OpenGL engine that doesn't do so.
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void ImGuiImplOpenGL2RenderDrawData(ImDrawData* draw_data)
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{
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// Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
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int fb_width = cast(int)(draw_data.DisplaySize.x * draw_data.FramebufferScale.x);
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int fb_height = cast(int)(draw_data.DisplaySize.y * draw_data.FramebufferScale.y);
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if (fb_width == 0 || fb_height == 0)
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return;
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// Backup GL state
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GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
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GLint[2] last_polygon_mode; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode.ptr);
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GLint[4] last_viewport; glGetIntegerv(GL_VIEWPORT, last_viewport.ptr);
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GLint[4] last_scissor_box; glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box.ptr);
|
|
glPushAttrib(GL_ENABLE_BIT | GL_COLOR_BUFFER_BIT | GL_TRANSFORM_BIT);
|
|
|
|
// Setup desired GL state
|
|
ImGuiImplOpenGL2SetupRenderState(draw_data, fb_width, fb_height);
|
|
|
|
// Will project scissor/clipping rectangles into framebuffer space
|
|
ImVec2 clip_off = draw_data.DisplayPos; // (0,0) unless using multi-viewports
|
|
ImVec2 clip_scale = draw_data.FramebufferScale; // (1,1) unless using retina display which are often (2,2)
|
|
|
|
// Render command lists
|
|
for (int n = 0; n < draw_data.CmdListsCount; n++)
|
|
{
|
|
ImDrawList* cmd_list = draw_data.CmdLists[n];
|
|
ImDrawVert* vtx_buffer = cmd_list.VtxBuffer.Data;
|
|
ImDrawIdx* idx_buffer = cmd_list.IdxBuffer.Data;
|
|
glVertexPointer(2, GL_FLOAT, ImDrawVert.sizeof, cast(const GLvoid*)(cast(const char*)vtx_buffer + ImDrawVert.pos.offsetof));
|
|
glTexCoordPointer(2, GL_FLOAT, ImDrawVert.sizeof, cast(const GLvoid*)(cast(const char*)vtx_buffer + ImDrawVert.uv.offsetof));
|
|
glColorPointer(4, GL_UNSIGNED_BYTE, ImDrawVert.sizeof, cast(const GLvoid*)(cast(const char*)vtx_buffer + ImDrawVert.col.offsetof));
|
|
|
|
for (int cmd_i = 0; cmd_i < cmd_list.CmdBuffer.Size; cmd_i++)
|
|
{
|
|
const ImDrawCmd* pcmd = &cmd_list.CmdBuffer.Data[cmd_i];
|
|
if (pcmd.UserCallback)
|
|
{
|
|
// User callback, registered via ImDrawList::AddCallback()
|
|
// (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
|
|
/*if (pcmd.UserCallback == &ImDrawCallback_ResetRenderState)
|
|
ImGui_ImplOpenGL2_SetupRenderState(draw_data, fb_width, fb_height);
|
|
else*/
|
|
pcmd.UserCallback(cmd_list, pcmd);
|
|
}
|
|
else
|
|
{
|
|
// Project scissor/clipping rectangles into framebuffer space
|
|
ImVec4 clip_rect = ImVec4(0,0,0,0);
|
|
clip_rect.x = (pcmd.ClipRect.x - clip_off.x) * clip_scale.x;
|
|
clip_rect.y = (pcmd.ClipRect.y - clip_off.y) * clip_scale.y;
|
|
clip_rect.z = (pcmd.ClipRect.z - clip_off.x) * clip_scale.x;
|
|
clip_rect.w = (pcmd.ClipRect.w - clip_off.y) * clip_scale.y;
|
|
|
|
if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0f && clip_rect.w >= 0.0f)
|
|
{
|
|
// Apply scissor/clipping rectangle
|
|
glScissor(cast(int)clip_rect.x, cast(int)(fb_height - clip_rect.w), cast(int)(clip_rect.z - clip_rect.x), cast(int)(clip_rect.w - clip_rect.y));
|
|
|
|
// Bind texture, Draw
|
|
glBindTexture(GL_TEXTURE_2D, cast(GLuint)pcmd.TextureId);
|
|
glDrawElements(GL_TRIANGLES, cast(GLsizei)pcmd.ElemCount, ImDrawIdx.sizeof == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer);
|
|
}
|
|
}
|
|
idx_buffer += pcmd.ElemCount;
|
|
}
|
|
}
|
|
|
|
// Restore modified GL state
|
|
glDisableClientState(GL_COLOR_ARRAY);
|
|
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
|
|
glDisableClientState(GL_VERTEX_ARRAY);
|
|
glBindTexture(GL_TEXTURE_2D, cast(GLuint)last_texture);
|
|
glMatrixMode(GL_MODELVIEW);
|
|
glPopMatrix();
|
|
glMatrixMode(GL_PROJECTION);
|
|
glPopMatrix();
|
|
glPopAttrib();
|
|
glPolygonMode(GL_FRONT, cast(GLenum)last_polygon_mode[0]); glPolygonMode(GL_BACK, cast(GLenum)last_polygon_mode[1]);
|
|
glViewport(last_viewport[0], last_viewport[1], cast(GLsizei)last_viewport[2], cast(GLsizei)last_viewport[3]);
|
|
glScissor(last_scissor_box[0], last_scissor_box[1], cast(GLsizei)last_scissor_box[2], cast(GLsizei)last_scissor_box[3]);
|
|
}
|
|
|
|
bool ImGuiImplOpenGL2CreateFontsTexture()
|
|
{
|
|
// Build texture atlas
|
|
ImGuiIO* io = igGetIO();
|
|
ubyte* pixels;
|
|
int width, height;
|
|
int bpp;
|
|
ImFontAtlas_GetTexDataAsRGBA32(io.Fonts, &pixels, &width, &height, &bpp); // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
|
|
|
|
// Upload texture to graphics system
|
|
GLint last_texture;
|
|
glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_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);
|
|
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
|
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
|
|
|
|
// Store our identifier
|
|
io.Fonts.TexID = cast(ImTextureID)g_FontTexture;
|
|
|
|
// Restore state
|
|
glBindTexture(GL_TEXTURE_2D, last_texture);
|
|
|
|
return true;
|
|
}
|
|
|
|
void ImGuiImplOpenGL2DestroyFontsTexture()
|
|
{
|
|
if (g_FontTexture)
|
|
{
|
|
ImGuiIO* io = igGetIO();
|
|
glDeleteTextures(1, &g_FontTexture);
|
|
io.Fonts.TexID = null;
|
|
g_FontTexture = 0;
|
|
}
|
|
}
|
|
|
|
bool ImGuiImplOpenGL2CreateDeviceObjects()
|
|
{
|
|
return ImGuiImplOpenGL2CreateFontsTexture();
|
|
}
|
|
|
|
void ImGuiImplOpenGL2DestroyDeviceObjects()
|
|
{
|
|
ImGuiImplOpenGL2DestroyFontsTexture();
|
|
} |