refactor: add Window interface
This commit is contained in:
MihailRis
@@ -0,0 +1,683 @@
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#include "window/Window.hpp"
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#include <GL/glew.h>
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#include <GLFW/glfw3.h>
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#include <unordered_set>
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#include <chrono>
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#include "debug/Logger.hpp"
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#include "graphics/core/ImageData.hpp"
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#include "graphics/core/Texture.hpp"
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#include "settings.hpp"
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#include "util/ObjectsKeeper.hpp"
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#include "util/platform.hpp"
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#include "window/input.hpp"
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static debug::Logger logger("window");
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static std::unordered_set<std::string> extensions_cache;
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static void init_gl_extensions_cache() {
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if (!extensions_cache.empty()) {
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return;
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}
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GLint numExtensions = 0;
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glGetIntegerv(GL_NUM_EXTENSIONS, &numExtensions);
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for (GLint i = 0; i < numExtensions; ++i) {
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const char *ext = reinterpret_cast<const char *>(glGetStringi(GL_EXTENSIONS, i));
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if (ext) {
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extensions_cache.insert(ext);
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}
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}
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}
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static bool is_gl_extension_supported(const char *extension) {
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if (!extension || !*extension) {
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return false;
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}
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init_gl_extensions_cache();
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return extensions_cache.find(extension) != extensions_cache.end();
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}
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static const char* gl_error_name(int error) {
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switch (error) {
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case GL_DEBUG_TYPE_ERROR: return "ERROR";
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case GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR: return "DEPRECATED_BEHAVIOR";
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case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR: return "UNDEFINED_BEHAVIOR";
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case GL_DEBUG_TYPE_PORTABILITY: return "PORTABILITY";
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case GL_DEBUG_TYPE_PERFORMANCE: return "PERFORMANCE";
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case GL_DEBUG_TYPE_OTHER: return "OTHER";
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}
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return "UNKNOWN";
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}
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static const char* gl_severity_name(int severity) {
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switch (severity) {
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case GL_DEBUG_SEVERITY_LOW: return "LOW";
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case GL_DEBUG_SEVERITY_MEDIUM: return "MEDIUM";
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case GL_DEBUG_SEVERITY_HIGH: return "HIGH";
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case GL_DEBUG_SEVERITY_NOTIFICATION: return "NOTIFICATION";
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}
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return "UNKNOWN";
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}
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static void GLAPIENTRY gl_message_callback(
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GLenum source,
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GLenum type,
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GLuint id,
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GLenum severity,
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GLsizei length,
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const GLchar* message,
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const void* userParam
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) {
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if (severity == GL_DEBUG_SEVERITY_NOTIFICATION) {
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return;
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}
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if (!ENGINE_DEBUG_BUILD && severity != GL_DEBUG_SEVERITY_HIGH) {
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return;
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}
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logger.warning() << "GL:" << gl_error_name(type) << ":"
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<< gl_severity_name(severity) << ": " << message;
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}
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static const char* glfw_error_name(int error) {
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switch (error) {
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case GLFW_NO_ERROR:
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return "no error";
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case GLFW_NOT_INITIALIZED:
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return "not initialized";
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case GLFW_NO_CURRENT_CONTEXT:
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return "no current context";
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case GLFW_INVALID_ENUM:
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return "invalid enum";
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case GLFW_INVALID_VALUE:
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return "invalid value";
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case GLFW_OUT_OF_MEMORY:
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return "out of memory";
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case GLFW_API_UNAVAILABLE:
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return "api unavailable";
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case GLFW_VERSION_UNAVAILABLE:
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return "version unavailable";
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case GLFW_PLATFORM_ERROR:
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return "platform error";
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case GLFW_FORMAT_UNAVAILABLE:
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return "format unavailable";
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case GLFW_NO_WINDOW_CONTEXT:
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return "no window context";
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default:
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return "unknown error";
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}
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}
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static void glfw_error_callback(int error, const char* description) {
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auto logline = logger.error();
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logline << "GLFW error [0x" << std::hex << error << " - "
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<< glfw_error_name(error) << "]";
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if (description) {
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logline << ": " << description;
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}
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}
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inline constexpr short KEYS_BUFFER_SIZE = 1036;
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inline constexpr short _MOUSE_KEYS_OFFSET = 1024;
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static GLFWcursor* standard_cursors[static_cast<int>(CursorShape::LAST) + 1] = {};
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class GLFWInput : public Input {
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public:
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int scroll = 0;
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uint currentFrame = 0;
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uint frames[KEYS_BUFFER_SIZE] {};
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std::vector<uint> codepoints;
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std::vector<keycode> pressedKeys;
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Bindings bindings;
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bool keys[KEYS_BUFFER_SIZE] {};
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std::unordered_map<keycode, util::HandlersList<>> keyCallbacks;
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GLFWInput(GLFWwindow* window)
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: window(window) {
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}
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void pollEvents() override {
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delta.x = 0.0f;
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delta.y = 0.0f;
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scroll = 0;
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currentFrame++;
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codepoints.clear();
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pressedKeys.clear();
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glfwPollEvents();
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for (auto& entry : bindings.getAll()) {
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auto& binding = entry.second;
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if (!binding.enabled) {
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binding.state = false;
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continue;
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}
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binding.justChange = false;
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bool newstate = false;
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switch (binding.type) {
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case inputtype::keyboard:
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newstate = pressed(static_cast<keycode>(binding.code));
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break;
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case inputtype::mouse:
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newstate = clicked(static_cast<mousecode>(binding.code));
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break;
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}
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if (newstate) {
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if (!binding.state) {
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binding.state = true;
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binding.justChange = true;
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binding.onactived.notify();
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}
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} else {
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if (binding.state) {
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binding.state = false;
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binding.justChange = true;
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}
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}
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}
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}
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void onKeyCallback(int key, bool pressed) {
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bool prevPressed = keys[key];
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keys[key] = pressed;
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frames[key] = currentFrame;
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if (pressed && !prevPressed) {
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const auto& callbacks = keyCallbacks.find(static_cast<keycode>(key));
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if (callbacks != keyCallbacks.end()) {
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callbacks->second.notify();
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}
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}
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if (pressed) {
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pressedKeys.push_back(static_cast<keycode>(key));
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}
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}
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void onMouseCallback(int button, bool pressed) {
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int key = button + _MOUSE_KEYS_OFFSET;
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onKeyCallback(key, pressed);
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}
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const char* getClipboardText() const override {
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return glfwGetClipboardString(window);
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}
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void setClipboardText(const char* text) override {
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glfwSetClipboardString(window, text);
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}
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int getScroll() override {
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return scroll;
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}
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bool pressed(keycode key) const override {
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int keycode = static_cast<int>(key);
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if (keycode < 0 || keycode >= KEYS_BUFFER_SIZE) {
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return false;
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}
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return keys[keycode];
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}
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bool jpressed(keycode keycode) const override {
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return pressed(keycode) &&
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frames[static_cast<int>(keycode)] == currentFrame;
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}
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bool clicked(mousecode code) const override {
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return pressed(
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static_cast<keycode>(_MOUSE_KEYS_OFFSET + static_cast<int>(code))
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);
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}
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bool jclicked(mousecode code) const override {
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return clicked(code) &&
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frames[static_cast<int>(code) + _MOUSE_KEYS_OFFSET] ==
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currentFrame;
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}
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CursorState getCursor() const override {
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return {isCursorLocked(), cursor, delta};
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}
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bool isCursorLocked() const override {
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return cursorLocked;
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}
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void toggleCursor() override {
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cursorDrag = false;
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if (cursorLocked) {
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glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
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} else {
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glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
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}
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cursorLocked = !cursorLocked;
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}
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void setCursorPosition(double xpos, double ypos) {
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if (cursorDrag) {
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delta.x += xpos - cursor.x;
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delta.y += ypos - cursor.y;
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} else {
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cursorDrag = true;
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}
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cursor.x = xpos;
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cursor.y = ypos;
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}
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Bindings& getBindings() override {
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return bindings;
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}
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const Bindings& getBindings() const override {
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return bindings;
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}
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observer_handler addKeyCallback(keycode key, KeyCallback callback) override {
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return keyCallbacks[key].add(std::move(callback));
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}
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const std::vector<keycode>& getPressedKeys() const override {
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return pressedKeys;
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}
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const std::vector<uint>& getCodepoints() const override {
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return codepoints;
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}
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private:
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GLFWwindow* window;
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bool cursorLocked = false;
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bool cursorDrag = false;
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glm::vec2 delta;
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glm::vec2 cursor;
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};
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static_assert(!std::is_abstract<GLFWInput>());
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class GLFWWindow : public Window {
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public:
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GLFWInput& input;
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DisplaySettings* settings;
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GLFWWindow(
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GLFWInput& glfwInput,
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GLFWwindow* window,
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DisplaySettings* settings,
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int width,
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int height
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)
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: Window({width, height}),
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input(glfwInput),
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settings(settings),
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window(window) {
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}
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~GLFWWindow() {
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for (int i = 0; i <= static_cast<int>(CursorShape::LAST); i++) {
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glfwDestroyCursor(standard_cursors[i]);
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}
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glfwTerminate();
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}
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double time() override {
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return glfwGetTime();
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}
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void swapBuffers() override {
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glfwSwapBuffers(window);
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resetScissor();
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if (framerate > 0) {
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auto elapsedTime = time() - prevSwap;
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auto frameTime = 1.0 / framerate;
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if (elapsedTime < frameTime) {
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platform::sleep(
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static_cast<size_t>((frameTime - elapsedTime) * 1000)
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);
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}
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}
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prevSwap = time();
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}
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bool isMaximized() const override {
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return glfwGetWindowAttrib(window, GLFW_MAXIMIZED);
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}
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bool isFocused() const override {
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return glfwGetWindowAttrib(window, GLFW_FOCUSED);
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}
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bool isIconified() const override {
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return glfwGetWindowAttrib(window, GLFW_ICONIFIED);
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}
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bool isShouldClose() const override {
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return glfwWindowShouldClose(window);
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}
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void setShouldClose(bool flag) override {
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glfwSetWindowShouldClose(window, flag);
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}
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void setCursor(CursorShape shape) override {
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if (cursor == shape) {
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return;
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}
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cursor = shape;
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// NULL cursor is valid for GLFW
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glfwSetCursor(window, standard_cursors[static_cast<int>(shape)]);
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}
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void toggleFullscreen() override {
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fullscreen = !fullscreen;
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GLFWmonitor* monitor = glfwGetPrimaryMonitor();
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const GLFWvidmode* mode = glfwGetVideoMode(monitor);
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if (input.isCursorLocked()){
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input.toggleCursor();
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}
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if (fullscreen) {
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glfwGetWindowPos(window, &posX, &posY);
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glfwSetWindowMonitor(
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window, monitor, 0, 0, mode->width, mode->height, GLFW_DONT_CARE
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);
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} else {
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glfwSetWindowMonitor(
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window,
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nullptr,
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posX,
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posY,
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settings->width.get(),
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settings->height.get(),
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GLFW_DONT_CARE
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);
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}
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double xPos, yPos;
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glfwGetCursorPos(window, &xPos, &yPos);
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input.setCursorPosition(xPos, yPos);
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}
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bool isFullscreen() const override {
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return fullscreen;
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}
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void setIcon(const ImageData* image) override {
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if (image == nullptr) {
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glfwSetWindowIcon(window, 0, nullptr);
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return;
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}
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GLFWimage icon {
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static_cast<int>(image->getWidth()),
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static_cast<int>(image->getHeight()),
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image->getData()};
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glfwSetWindowIcon(window, 1, &icon);
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}
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void setSize(int width, int height) {
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glViewport(0, 0, width, height);
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size = {width, height};
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if (!isFullscreen() && !isMaximized()) {
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settings->width.set(width);
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settings->height.set(height);
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}
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}
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void pushScissor(glm::vec4 area) override {
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if (scissorStack.empty()) {
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glEnable(GL_SCISSOR_TEST);
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}
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scissorStack.push(scissorArea);
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area.z += glm::ceil(area.x);
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area.w += glm::ceil(area.y);
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area.x = glm::max(area.x, scissorArea.x);
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area.y = glm::max(area.y, scissorArea.y);
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area.z = glm::min(area.z, scissorArea.z);
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area.w = glm::min(area.w, scissorArea.w);
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if (area.z < 0.0f || area.w < 0.0f) {
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glScissor(0, 0, 0, 0);
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} else {
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glScissor(
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area.x,
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size.y - area.w,
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std::max(0, static_cast<int>(glm::ceil(area.z - area.x))),
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std::max(0, static_cast<int>(glm::ceil(area.w - area.y)))
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);
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}
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scissorArea = area;
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}
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void resetScissor() override {
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scissorArea = glm::vec4(0.0f, 0.0f, size.x, size.y);
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scissorStack = std::stack<glm::vec4>();
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glDisable(GL_SCISSOR_TEST);
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}
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void popScissor() override {
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if (scissorStack.empty()) {
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logger.warning() << "extra Window::popScissor call";
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return;
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}
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glm::vec4 area = scissorStack.top();
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scissorStack.pop();
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if (area.z < 0.0f || area.w < 0.0f) {
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glScissor(0, 0, 0, 0);
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} else {
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glScissor(
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area.x,
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size.y - area.w,
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std::max(0, static_cast<int>(area.z - area.x)),
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std::max(0, static_cast<int>(area.w - area.y))
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);
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}
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if (scissorStack.empty()) {
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glDisable(GL_SCISSOR_TEST);
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}
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scissorArea = area;
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}
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std::unique_ptr<ImageData> takeScreenshot() override {
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auto data = std::make_unique<ubyte[]>(size.x * size.y * 3);
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glPixelStorei(GL_PACK_ALIGNMENT, 1);
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glReadPixels(0, 0, size.x, size.y, GL_RGB, GL_UNSIGNED_BYTE, data.get());
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return std::make_unique<ImageData>(
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ImageFormat::rgb888, size.x, size.y, data.release()
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);
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}
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void setFramerate(int framerate) override {
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if ((framerate != -1) != (this->framerate != -1)) {
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glfwSwapInterval(framerate == -1);
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}
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this->framerate = framerate;
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}
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private:
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GLFWwindow* window;
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CursorShape cursor = CursorShape::ARROW;
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bool fullscreen = false;
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int framerate = -1;
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std::stack<glm::vec4> scissorStack;
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glm::vec4 scissorArea;
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double prevSwap = 0.0;
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int posX = 0;
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int posY = 0;
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};
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static_assert(!std::is_abstract<GLFWWindow>());
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static void mouse_button_callback(GLFWwindow* window, int button, int action, int) {
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auto handler = static_cast<GLFWWindow*>(glfwGetWindowUserPointer(window));
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handler->input.onMouseCallback(button, action == GLFW_PRESS);
|
||||
}
|
||||
|
||||
static void character_callback(GLFWwindow* window, unsigned int codepoint) {
|
||||
auto handler = static_cast<GLFWWindow*>(glfwGetWindowUserPointer(window));
|
||||
handler->input.codepoints.push_back(codepoint);
|
||||
}
|
||||
|
||||
static void key_callback(
|
||||
GLFWwindow* window, int key, int /*scancode*/, int action, int /*mode*/
|
||||
) {
|
||||
auto handler = static_cast<GLFWWindow*>(glfwGetWindowUserPointer(window));
|
||||
auto& input = handler->input;
|
||||
if (key == GLFW_KEY_UNKNOWN) {
|
||||
return;
|
||||
}
|
||||
if (action == GLFW_PRESS) {
|
||||
input.onKeyCallback(key, true);
|
||||
|
||||
} else if (action == GLFW_RELEASE) {
|
||||
input.onKeyCallback(key, false);
|
||||
} else if (action == GLFW_REPEAT) {
|
||||
input.onKeyCallback(key, true);
|
||||
}
|
||||
}
|
||||
|
||||
static void window_size_callback(GLFWwindow* window, int width, int height) {
|
||||
auto handler = static_cast<GLFWWindow*>(glfwGetWindowUserPointer(window));
|
||||
if (width && height) {
|
||||
handler->setSize(width, height);
|
||||
}
|
||||
handler->resetScissor();
|
||||
}
|
||||
|
||||
static void scroll_callback(GLFWwindow* window, double, double yoffset) {
|
||||
auto handler = static_cast<GLFWWindow*>(glfwGetWindowUserPointer(window));
|
||||
handler->input.scroll += yoffset;
|
||||
}
|
||||
|
||||
static void cursor_pos_callback(GLFWwindow* window, double xpos, double ypos) {
|
||||
auto handler = static_cast<GLFWWindow*>(glfwGetWindowUserPointer(window));
|
||||
handler->input.setCursorPosition(xpos, ypos);
|
||||
}
|
||||
|
||||
std::tuple<
|
||||
std::unique_ptr<Window>,
|
||||
std::unique_ptr<Input>
|
||||
> display::initialize(DisplaySettings* settings) {
|
||||
int width = settings->width.get();
|
||||
int height = settings->height.get();
|
||||
|
||||
std::string title = "VoxelCore v" +
|
||||
std::to_string(ENGINE_VERSION_MAJOR) + "." +
|
||||
std::to_string(ENGINE_VERSION_MINOR);
|
||||
if (ENGINE_DEBUG_BUILD) {
|
||||
title += " [debug]";
|
||||
}
|
||||
|
||||
glfwSetErrorCallback(glfw_error_callback);
|
||||
if (glfwInit() == GLFW_FALSE) {
|
||||
logger.error() << "failed to initialize GLFW";
|
||||
return {nullptr, nullptr};
|
||||
}
|
||||
|
||||
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
|
||||
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
|
||||
#ifdef __APPLE__
|
||||
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
|
||||
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
|
||||
glfwWindowHint(GLFW_COCOA_RETINA_FRAMEBUFFER, GLFW_FALSE);
|
||||
#else
|
||||
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_ANY_PROFILE);
|
||||
#endif
|
||||
glfwWindowHint(GLFW_RESIZABLE, GL_TRUE);
|
||||
glfwWindowHint(GLFW_SAMPLES, settings->samples.get());
|
||||
|
||||
auto window = glfwCreateWindow(width, height, title.c_str(), nullptr, nullptr);
|
||||
if (window == nullptr) {
|
||||
logger.error() << "failed to create GLFW window";
|
||||
glfwTerminate();
|
||||
return {nullptr, nullptr};
|
||||
}
|
||||
glfwMakeContextCurrent(window);
|
||||
|
||||
glewExperimental = GL_TRUE;
|
||||
|
||||
GLenum glewErr = glewInit();
|
||||
if (glewErr != GLEW_OK) {
|
||||
if (glewErr == GLEW_ERROR_NO_GLX_DISPLAY) {
|
||||
// see issue #240
|
||||
logger.warning()
|
||||
<< "glewInit() returned GLEW_ERROR_NO_GLX_DISPLAY; ignored";
|
||||
} else {
|
||||
logger.error() << "failed to initialize GLEW:\n"
|
||||
<< glewGetErrorString(glewErr);
|
||||
glfwTerminate();
|
||||
return {nullptr, nullptr};
|
||||
}
|
||||
}
|
||||
|
||||
if (is_gl_extension_supported("GL_KHR_debug")) {
|
||||
glEnable(GL_DEBUG_OUTPUT);
|
||||
glDebugMessageCallback(gl_message_callback, nullptr);
|
||||
}
|
||||
|
||||
glViewport(0, 0, width, height);
|
||||
glClearColor(0.0f, 0.0f, 0.0f, 1);
|
||||
glEnable(GL_BLEND);
|
||||
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
||||
|
||||
GLint maxTextureSize[1] {static_cast<GLint>(Texture::MAX_RESOLUTION)};
|
||||
glGetIntegerv(GL_MAX_TEXTURE_SIZE, maxTextureSize);
|
||||
if (maxTextureSize[0] > 0) {
|
||||
Texture::MAX_RESOLUTION = maxTextureSize[0];
|
||||
logger.info() << "max texture size is " << Texture::MAX_RESOLUTION;
|
||||
}
|
||||
|
||||
glfwSetKeyCallback(window, key_callback);
|
||||
glfwSetMouseButtonCallback(window, mouse_button_callback);
|
||||
glfwSetCursorPosCallback(window, cursor_pos_callback);
|
||||
glfwSetWindowSizeCallback(window, window_size_callback);
|
||||
glfwSetCharCallback(window, character_callback);
|
||||
glfwSetScrollCallback(window, scroll_callback);
|
||||
|
||||
glfwSwapInterval(1);
|
||||
const GLubyte* vendor = glGetString(GL_VENDOR);
|
||||
const GLubyte* renderer = glGetString(GL_RENDERER);
|
||||
logger.info() << "GL Vendor: " << reinterpret_cast<const char*>(vendor);
|
||||
logger.info() << "GL Renderer: " << reinterpret_cast<const char*>(renderer);
|
||||
logger.info() << "GLFW: " << glfwGetVersionString();
|
||||
glm::vec2 scale;
|
||||
glfwGetMonitorContentScale(glfwGetPrimaryMonitor(), &scale.x, &scale.y);
|
||||
logger.info() << "monitor content scale: " << scale.x << "x" << scale.y;
|
||||
|
||||
input_util::initialize();
|
||||
|
||||
for (int i = 0; i <= static_cast<int>(CursorShape::LAST); i++) {
|
||||
int cursor = GLFW_ARROW_CURSOR + i;
|
||||
// GLFW 3.3 does not support some cursors
|
||||
if (GLFW_VERSION_MAJOR <= 3 && GLFW_VERSION_MINOR <= 3 && cursor > GLFW_VRESIZE_CURSOR) {
|
||||
break;
|
||||
}
|
||||
standard_cursors[i] = glfwCreateStandardCursor(cursor);
|
||||
}
|
||||
auto inputPtr = std::make_unique<GLFWInput>(window);
|
||||
auto windowPtr = std::make_unique<GLFWWindow>(
|
||||
*inputPtr, window, settings, width, height
|
||||
);
|
||||
glfwSetWindowUserPointer(window, windowPtr.get());
|
||||
return {std::move(windowPtr), std::move(inputPtr)};
|
||||
}
|
||||
|
||||
void display::clear() {
|
||||
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
||||
}
|
||||
|
||||
void display::clearDepth() {
|
||||
glClear(GL_DEPTH_BUFFER_BIT);
|
||||
}
|
||||
|
||||
void display::setBgColor(glm::vec3 color) {
|
||||
glClearColor(color.r, color.g, color.b, 1.0f);
|
||||
}
|
||||
|
||||
void display::setBgColor(glm::vec4 color) {
|
||||
glClearColor(color.r, color.g, color.b, color.a);
|
||||
}
|
||||
Reference in New Issue
Block a user