添加批量drawcall

Sandbox/src/DemoBox/GameLayer.cpp

@@ -0,0 +1,59 @@
+//
+// Created by sfd on 25-5-18.
+//
+
+#include "GameLayer.h"
+
+#include <imgui_internal.h>
+#include <Hazel/Core/Application.h>
+
+GameLayer::GameLayer() : Layer("GameLayer")
+{
+    auto& window = Application::Get().GetWindow();
+    CreateCamera(window.GetWidth(), window.GetHeight());
+
+    Random::Init();
+}
+
+
+void GameLayer::OnAttach()
+{
+    m_Level.Init();
+    ImGuiIO& io = ImGui::GetIO();
+
+}
+
+void GameLayer::OnDetech()
+{
+}
+
+void GameLayer::OnUpdate(TimeStep& ts)
+{
+    m_Time += ts;
+
+}
+
+void GameLayer::OnEvent(SDL_Event& e)
+{
+    if (const auto& window = Application::Get().GetWindow(); e.type == SDL_EVENT_WINDOW_RESIZED && e.window.windowID == window.GetMainWindowID())
+    {
+        CreateCamera(window.GetWidth(), window.GetHeight());
+    }
+}
+
+void GameLayer::OnImGuiRender()
+{
+}
+
+void GameLayer::CreateCamera(uint32_t width, uint32_t height)
+{
+    const float aspect = static_cast<float>(width) / static_cast<float>(height);
+
+    const float camWidth = 8.0f;
+    const float bottom = -camWidth;
+    const float top = camWidth;
+    const float left = bottom * aspect;
+    const float right = top * aspect;
+
+    m_Camera = OrthographicCamera(left, right, bottom, top);
+}

Sandbox/src/DemoBox/GameLayer.h

@@ -0,0 +1,43 @@
+//
+// Created by sfd on 25-5-18.
+//
+
+#ifndef GAMELAYER_H
+#define GAMELAYER_H
+#include <Hazel/Core/Layer.h>
+#include <Hazel/Renderer/OrthographicCamera.h>
+
+#include "Random.h"
+
+using namespace Hazel;
+
+class GameLayer : public Layer{
+public:
+    GameLayer();
+    ~GameLayer() = default;
+
+    void OnAttach() override;
+    void OnDetech() override;
+    void OnUpdate(TimeStep& ts) override;
+    void OnEvent(SDL_Event& e) override;
+    void OnImGuiRender() override;
+
+    void CreateCamera(uint32_t width, uint32_t height);
+
+private:
+    std::unique_ptr<OrthographicCamera> m_Camera;
+    float m_Time = 0.0f;
+
+    bool m_Blink = false;
+
+    enum class GameState
+    {
+        Play = 0, MainMenu, GameOver
+    };
+
+    GameState m_GameState = GameState::MainMenu;
+};
+
+
+
+#endif //GAMELAYER_H

Sandbox/src/DemoBox/Random.cpp

@@ -0,0 +1,5 @@
+//
+// Created by sfd on 25-5-18.
+//
+
+#include "Random.h"

Sandbox/src/DemoBox/Random.h

@@ -0,0 +1,28 @@
+//
+// Created by sfd on 25-5-18.
+//
+
+#ifndef RANDOM_H
+#define RANDOM_H
+
+#include <random>
+
+
+
+class Random {
+public:
+  static void Init() {
+    s_RandomEngine.seed(std::random_device()());
+  }
+  static float Float()
+  {
+    return (float)s_Distribution(s_RandomEngine) / (float)std::numeric_limits<uint32_t>::max();
+  }
+private:
+  static std::mt19937 s_RandomEngine;
+  static std::uniform_int_distribution<std::mt19937::result_type> s_Distribution;
+};
+
+
+
+#endif //RANDOM_H