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#include <GLFW/glfw3.h>
#include <webgpu/webgpu.h>
#include <glfw3webgpu.h>
#include <iostream>
#include <memory>
#include <cstdlib>
#include "renderer.h"
constexpr int WINDOW_WIDTH = 1280;
constexpr int WINDOW_HEIGHT = 720;
class Application {
public:
Application() : window_(nullptr), instance_(nullptr), device_(nullptr),
surface_(nullptr), adapter_(nullptr) {}
~Application() {
cleanup();
}
bool initialize() {
if (!glfwInit()) {
std::cerr << "Failed to initialize GLFW" << std::endl;
return false;
}
glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
glfwWindowHint(GLFW_RESIZABLE, GLFW_TRUE);
window_ = glfwCreateWindow(WINDOW_WIDTH, WINDOW_HEIGHT,
"TimePlot - C++ WebGPU", nullptr, nullptr);
if (!window_) {
std::cerr << "Failed to create window" << std::endl;
return false;
}
glfwSetWindowUserPointer(window_, this);
glfwSetKeyCallback(window_, keyCallback);
glfwSetFramebufferSizeCallback(window_, resizeCallback);
if (!initWebGPU()) {
return false;
}
renderer_ = std::make_unique<Renderer>(device_, surface_, WINDOW_WIDTH, WINDOW_HEIGHT);
if (!renderer_->initialize()) {
std::cerr << "Failed to initialize renderer" << std::endl;
return false;
}
return true;
}
void run() {
while (!glfwWindowShouldClose(window_)) {
glfwPollEvents();
renderer_->update();
renderer_->render();
}
}
private:
static void onAdapterRequestEnded(WGPURequestAdapterStatus status, WGPUAdapter adapter,
WGPUStringView message, void* userdata1, void* userdata2) {
if (status == WGPURequestAdapterStatus_Success) {
*static_cast<WGPUAdapter*>(userdata1) = adapter;
} else {
std::cerr << "Failed to get adapter: " << std::string(message.data, message.length) << std::endl;
}
}
static void onDeviceRequestEnded(WGPURequestDeviceStatus status, WGPUDevice device,
WGPUStringView message, void* userdata1, void* userdata2) {
if (status == WGPURequestDeviceStatus_Success) {
*static_cast<WGPUDevice*>(userdata1) = device;
} else {
std::cerr << "Failed to get device: " << std::string(message.data, message.length) << std::endl;
}
}
bool initWebGPU() {
// Create instance
WGPUInstanceDescriptor instanceDesc = {};
instanceDesc.nextInChain = nullptr;
instance_ = wgpuCreateInstance(&instanceDesc);
if (!instance_) {
std::cerr << "Failed to create WebGPU instance" << std::endl;
return false;
}
// Create surface from GLFW window
surface_ = glfwCreateWindowWGPUSurface(instance_, window_);
if (!surface_) {
std::cerr << "Failed to create surface" << std::endl;
return false;
}
// Request adapter with callback
WGPURequestAdapterOptions adapterOpts = {};
adapterOpts.nextInChain = nullptr;
adapterOpts.compatibleSurface = surface_;
adapterOpts.powerPreference = WGPUPowerPreference_HighPerformance;
WGPURequestAdapterCallbackInfo adapterCallbackInfo = {};
adapterCallbackInfo.mode = WGPUCallbackMode_AllowSpontaneous;
adapterCallbackInfo.callback = onAdapterRequestEnded;
adapterCallbackInfo.userdata1 = &adapter_;
adapterCallbackInfo.userdata2 = nullptr;
wgpuInstanceRequestAdapter(instance_, &adapterOpts, adapterCallbackInfo);
// Process events until adapter is ready
while (!adapter_) {
wgpuInstanceProcessEvents(instance_);
}
// Request device with callback
WGPUDeviceDescriptor deviceDesc = {};
deviceDesc.nextInChain = nullptr;
deviceDesc.label = {nullptr, WGPU_STRLEN};
deviceDesc.requiredFeatureCount = 0;
deviceDesc.requiredLimits = nullptr;
deviceDesc.defaultQueue.nextInChain = nullptr;
deviceDesc.defaultQueue.label = {nullptr, WGPU_STRLEN};
deviceDesc.deviceLostCallbackInfo.nextInChain = nullptr;
deviceDesc.deviceLostCallbackInfo.mode = WGPUCallbackMode_AllowSpontaneous;
deviceDesc.deviceLostCallbackInfo.callback = nullptr;
deviceDesc.uncapturedErrorCallbackInfo.nextInChain = nullptr;
deviceDesc.uncapturedErrorCallbackInfo.callback = nullptr;
WGPURequestDeviceCallbackInfo deviceCallbackInfo = {};
deviceCallbackInfo.mode = WGPUCallbackMode_AllowSpontaneous;
deviceCallbackInfo.callback = onDeviceRequestEnded;
deviceCallbackInfo.userdata1 = &device_;
deviceCallbackInfo.userdata2 = nullptr;
wgpuAdapterRequestDevice(adapter_, &deviceDesc, deviceCallbackInfo);
// Process events until device is ready
while (!device_) {
wgpuInstanceProcessEvents(instance_);
}
return true;
}
void cleanup() {
renderer_.reset();
if (device_) {
wgpuDeviceRelease(device_);
device_ = nullptr;
}
if (adapter_) {
wgpuAdapterRelease(adapter_);
adapter_ = nullptr;
}
if (surface_) {
wgpuSurfaceRelease(surface_);
surface_ = nullptr;
}
if (instance_) {
wgpuInstanceRelease(instance_);
instance_ = nullptr;
}
if (window_) {
glfwDestroyWindow(window_);
window_ = nullptr;
}
glfwTerminate();
}
static void keyCallback(GLFWwindow* window, int key, int scancode, int action, int mods) {
auto* app = static_cast<Application*>(glfwGetWindowUserPointer(window));
if (action == GLFW_PRESS) {
if (key == GLFW_KEY_ESCAPE) {
glfwSetWindowShouldClose(window, GLFW_TRUE);
} else if (key == GLFW_KEY_G) {
app->renderer_->toggleGrid();
}
}
}
static void resizeCallback(GLFWwindow* window, int width, int height) {
auto* app = static_cast<Application*>(glfwGetWindowUserPointer(window));
app->renderer_->resize(width, height);
}
GLFWwindow* window_;
WGPUInstance instance_;
WGPUAdapter adapter_;
WGPUDevice device_;
WGPUSurface surface_;
std::unique_ptr<Renderer> renderer_;
};
int main() {
Application app;
if (!app.initialize()) {
return EXIT_FAILURE;
}
app.run();
return EXIT_SUCCESS;
}
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