渲染后端加入
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232
Fostbite2D/src/main.cpp
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232
Fostbite2D/src/main.cpp
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#include <SDL2/SDL.h>
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#include <cmath>
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#include <fostbite2D/app/application.h>
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#include <fostbite2D/core/color.h>
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#include <fostbite2D/platform/window.h>
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#include <fostbite2D/render/camera.h>
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#include <fostbite2D/render/opengl/gl_font_atlas.h>
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#include <fostbite2D/render/opengl/gl_renderer.h>
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#include <fostbite2D/render/opengl/gl_shader.h>
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#include <fostbite2D/render/shader/shader_manager.h>
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#include <glad/glad.h>
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#include <iostream>
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using namespace frostbite2D;
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int main(int argc, char **argv) {
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AppConfig config = AppConfig::createDefault();
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config.appName = "Frostbite2D Render Test";
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config.appVersion = "1.0.0";
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config.windowConfig.width = 800;
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config.windowConfig.height = 600;
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config.windowConfig.title = "Frostbite2D - OpenGL Render Test";
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Application &app = Application::get();
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if (!app.init(config)) {
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std::cerr << "Failed to initialize application!" << std::endl;
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return -1;
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}
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// 初始化 ShaderManager
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auto shaderFactory = makePtr<GLShaderFactory>();
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if (!ShaderManager::getInstance().init(shaderFactory)) {
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std::cerr << "Failed to initialize ShaderManager!" << std::endl;
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return -1;
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}
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// 创建 OpenGL 渲染器
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GLRenderer renderer;
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SDL_Window *sdlWindow = SDL_GL_GetCurrentWindow();
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if (!sdlWindow) {
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std::cerr << "Failed to get SDL window!" << std::endl;
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return -1;
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}
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if (!renderer.init(sdlWindow)) {
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std::cerr << "Failed to initialize OpenGL renderer!" << std::endl;
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return -1;
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}
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// 加载字体（使用系统默认字体或项目字体）
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std::string fontPath = "C:/Windows/Fonts/arial.ttf"; // Windows 系统字体
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FontAtlas *font = nullptr;
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// 尝试加载字体
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try {
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font = new GLFontAtlas(fontPath, 24, false); // 24像素大小，不使用SDF
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SDL_Log("Font loaded successfully: %s", fontPath.c_str());
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} catch (...) {
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SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION, "Failed to load font: %s",
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fontPath.c_str());
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SDL_Log("Text rendering will be disabled");
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}
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// 创建相机 - 视口范围 (0,0) 到 (800,600)，相机位置在 (0,0) 表示左上角
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Camera camera(0.0f, 800.0f, 600.0f, 0.0f);
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// 相机默认位置 (0,0)，表示看向世界坐标的左上角
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SDL_Log("Frostbite2D OpenGL Renderer initialized successfully!");
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SDL_Log("Press ESC to exit");
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SDL_Log("Use WASD to move camera, Q/E to zoom, R to reset");
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// 主循环
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bool running = true;
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SDL_Event event;
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float time = 0.0f;
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float zoom = 1.0f;
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while (running) {
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// 处理事件
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while (SDL_PollEvent(&event)) {
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if (event.type == SDL_QUIT) {
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running = false;
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}
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if (event.type == SDL_KEYDOWN) {
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if (event.key.keysym.sym == SDLK_ESCAPE) {
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running = false;
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}
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// 相机控制
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if (event.key.keysym.sym == SDLK_w) {
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camera.move(
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0.0f,
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10.0f); // 向上移动（Y轴向下，所以正方向是向下，反方向是向上）
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}
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if (event.key.keysym.sym == SDLK_s) {
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camera.move(0.0f, -10.0f); // 向下移动
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}
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if (event.key.keysym.sym == SDLK_a) {
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camera.move(10.0f, 0.0f); // 向左移动
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}
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if (event.key.keysym.sym == SDLK_d) {
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camera.move(-10.0f, 0.0f); // 向右移动
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}
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if (event.key.keysym.sym == SDLK_q) {
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zoom = std::max(0.5f, zoom - 0.1f);
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camera.setZoom(zoom);
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}
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if (event.key.keysym.sym == SDLK_e) {
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zoom = std::min(3.0f, zoom + 0.1f);
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camera.setZoom(zoom);
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}
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if (event.key.keysym.sym == SDLK_r) {
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camera.setPosition(0.0f, 0.0f);
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zoom = 1.0f;
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camera.setZoom(zoom);
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}
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}
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}
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// 更新时间
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time += 0.016f; // 假设 60 FPS
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// 开始渲染帧
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renderer.beginFrame(Color(0.1f, 0.1f, 0.15f, 1.0f)); // 深蓝灰色背景
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// 设置视口
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renderer.setViewport(0, 0, 800, 600);
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// 使用相机的视图投影矩阵
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renderer.setViewProjection(camera.getViewProjectionMatrix());
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// 绘制测试图形（使用世界坐标）
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// 1. 绘制红色矩形边框
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renderer.drawRect(Rect(100.0f, 100.0f, 200.0f, 150.0f), Colors::Red, 2.0f);
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// 2. 绘制绿色填充矩形
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renderer.fillRect(Rect(350.0f, 100.0f, 200.0f, 150.0f), Colors::Green);
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// 3. 绘制蓝色圆形
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renderer.fillCircle(Vec2(650.0f, 175.0f), 75.0f, Colors::Blue, 32);
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// 4. 绘制动态旋转的矩形（使用填充三角形组合）
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float centerX = 400.0f;
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float centerY = 400.0f;
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float size = 100.0f;
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float angle = time * 2.0f; // 旋转角度
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// 计算旋转后的四个角
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float cosA = cosf(angle);
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float sinA = sinf(angle);
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Vec2 p1(centerX + (-size * cosA - (-size) * sinA),
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centerY + (-size * sinA + (-size) * cosA));
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Vec2 p2(centerX + (size * cosA - (-size) * sinA),
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centerY + (size * sinA + (-size) * cosA));
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Vec2 p3(centerX + (size * cosA - size * sinA),
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centerY + (size * sinA + size * cosA));
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Vec2 p4(centerX + (-size * cosA - size * sinA),
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centerY + (-size * sinA + size * cosA));
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// 绘制旋转的四边形（分成两个三角形）
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renderer.fillTriangle(p1, p2, p3, Colors::Yellow);
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renderer.fillTriangle(p1, p3, p4, Colors::Yellow);
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// 5. 绘制线条
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renderer.drawLine(Vec2(50.0f, 550.0f), Vec2(750.0f, 550.0f), Colors::White,
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3.0f);
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// 6. 绘制三角形
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renderer.fillTriangle(Vec2(200.0f, 300.0f), Vec2(300.0f, 300.0f),
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Vec2(250.0f, 200.0f), Colors::Cyan);
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// 7. 绘制网格（帮助观察相机移动）
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for (int i = 0; i <= 800; i += 100) {
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renderer.drawLine(Vec2((float)i, 0.0f), Vec2((float)i, 600.0f),
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Color(0.2f, 0.2f, 0.2f, 0.5f), 1.0f);
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}
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for (int i = 0; i <= 600; i += 100) {
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renderer.drawLine(Vec2(0.0f, (float)i), Vec2(800.0f, (float)i),
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Color(0.2f, 0.2f, 0.2f, 0.5f), 1.0f);
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}
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// 8. 绘制文本（使用 GLRenderer 的 drawText）
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if (font) {
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renderer.beginSpriteBatch();
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// 测试：直接绘制字体纹理的一部分（第一个字符 'F'）
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Texture *fontTex = font->getTexture();
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if (fontTex) {
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// 绘制字体纹理的一部分来测试
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Rect destRect(50.0f, 300.0f, 64.0f, 64.0f); // 目标位置和大小
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Rect srcRect(0.0f, 0.0f, 64.0f, 64.0f); // 纹理的前64x64像素
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renderer.drawSprite(*fontTex, destRect, srcRect, Colors::White, 0.0f,
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Vec2(0, 0));
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SDL_Log("Drawing font texture test at (50, 300)");
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}
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// 绘制标题
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renderer.drawText(*font, "Frostbite2D Engine", 50.0f, 50.0f,
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Colors::White);
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// 绘制说明文字
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renderer.drawText(*font, "WASD: Move Camera", 50.0f, 100.0f,
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Colors::Yellow);
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renderer.drawText(*font, "Q/E: Zoom", 50.0f, 130.0f, Colors::Yellow);
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renderer.drawText(*font, "R: Reset", 50.0f, 160.0f, Colors::Yellow);
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renderer.drawText(*font, "ESC: Exit", 50.0f, 190.0f, Colors::Yellow);
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// 绘制 FPS 信息
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renderer.drawText(*font, "OpenGL Renderer Active", 50.0f, 250.0f,
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Colors::Green);
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renderer.endSpriteBatch();
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}
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// 结束渲染帧
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renderer.endFrame();
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// 交换缓冲区
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SDL_GL_SwapWindow(sdlWindow);
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}
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// 清理资源
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delete font;
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renderer.shutdown();
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ShaderManager::getInstance().shutdown();
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app.shutdown();
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std::cout << "程序正常退出" << std::endl;
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return 0;
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}
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