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// This file is part of the 64k demo project.
// It implements platform-specific windowing and input using GLFW.
// Handles fullscreen toggling and native surface creation for WebGPU.
#include "platform.h"
#include "glfw3webgpu.h"
#include <GLFW/glfw3.h>
static GLFWwindow* window = nullptr;
static int windowed_x, windowed_y, windowed_w, windowed_h;
static bool g_is_fullscreen = false;
// --- New state for framebuffer size ---
static int g_width = 1280;
static int g_height = 720;
// Forward declaration for callback
void platform_toggle_fullscreen();
// --- Callbacks ---
static void framebuffer_size_callback(GLFWwindow* cb_window, int width, int height) {
(void)cb_window; // Unused
g_width = width;
g_height = height;
// Note: We would trigger a swap chain resize here, but our demo handles it implicitly.
}
static void glfw_key_callback(GLFWwindow* cb_window, int key, int scancode,
int action, int mods) {
if (action == GLFW_PRESS) {
if (key == GLFW_KEY_ESCAPE || key == GLFW_KEY_Q) {
glfwSetWindowShouldClose(cb_window, GLFW_TRUE);
} else if (key == GLFW_KEY_F) {
platform_toggle_fullscreen();
}
}
}
void platform_init_window(bool fullscreen, int* width_ptr, int* height_ptr) {
if (width_ptr && height_ptr) {
g_width = *width_ptr;
g_height = *height_ptr;
}
glfwInit();
glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
window = glfwCreateWindow(g_width, g_height, "demo64k", nullptr, nullptr);
// Immediately query the actual framebuffer size for high-DPI displays
glfwGetFramebufferSize(window, &g_width, &g_height);
glfwSetKeyCallback(window, glfw_key_callback);
glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
g_is_fullscreen = fullscreen;
if (fullscreen) {
// Save current windowed mode dimensions before going fullscreen
glfwGetWindowPos(window, &windowed_x, &windowed_y);
glfwGetWindowSize(window, &windowed_w, &windowed_h);
GLFWmonitor* monitor = glfwGetPrimaryMonitor();
const GLFWvidmode* mode = glfwGetVideoMode(monitor);
glfwSetWindowMonitor(window, monitor, 0, 0, mode->width, mode->height,
mode->refreshRate);
}
}
void platform_shutdown() {
glfwDestroyWindow(window);
glfwTerminate();
}
void platform_poll() {
glfwPollEvents();
}
bool platform_should_close() {
return glfwWindowShouldClose(window);
}
void platform_toggle_fullscreen() {
g_is_fullscreen = !g_is_fullscreen;
if (g_is_fullscreen) {
glfwGetWindowPos(window, &windowed_x, &windowed_y);
glfwGetWindowSize(window, &windowed_w, &windowed_h);
GLFWmonitor* monitor = glfwGetPrimaryMonitor();
const GLFWvidmode* mode = glfwGetVideoMode(monitor);
glfwSetWindowMonitor(window, monitor, 0, 0, mode->width, mode->height,
mode->refreshRate);
} else {
glfwSetWindowMonitor(window, nullptr, windowed_x, windowed_y, windowed_w,
windowed_h, 0);
}
}
GLFWwindow* platform_get_window() {
return window;
}
double platform_get_time() {
return glfwGetTime();
}
// --- New dimension getters ---
int platform_get_width() {
return g_width;
}
int platform_get_height() {
return g_height;
}
float platform_get_aspect_ratio() {
if (g_height == 0) return 1.0f;
return (float)g_width / (float)g_height;
}
WGPUSurface platform_create_wgpu_surface(WGPUInstance instance) {
return glfwCreateWindowWGPUSurface(instance, window);
}
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