80 lines
2.0 KiB
C++
80 lines
2.0 KiB
C++
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#include <glad/glad.h>
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#include <GLFW/glfw3.h>
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#include <iostream>
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void framebuffer_size_callback(GLFWwindow* window, int width, int height);
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void processInput(GLFWwindow* window);
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// settings
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const unsigned int SCR_WIDTH = 800;
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const unsigned int SCR_HEIGHT = 600;
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int main()
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{
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// <20><>ʼ<EFBFBD><CABC> GLFW
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glfwInit();
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// <20><><EFBFBD><EFBFBD> GLFW : <20>汾 3.3 ,ʹ<><CAB9> Core-profile ģʽ
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
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glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
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// MACOS ƽ̨<C6BD><CCA8>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>
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#ifdef _APPLE_
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glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
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#endif // _APPLE_
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڶ<EFBFBD><DAB6><EFBFBD>
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GLFWwindow* window = glfwCreateWindow(SCR_WIDTH, SCR_HEIGHT, "LearnOpenGL", NULL, NULL);
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if (window == NULL)
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{
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std::cout << "Failed to create GLFW window" << std::endl;
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glfwTerminate();
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return -1;
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}
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glfwMakeContextCurrent(window);
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// ע<><D7A2>֡<EFBFBD><D6A1><EFBFBD><EFBFBD><EFBFBD>仯ʱ<E4BBAF>Ļص<C4BB><D8B5><EFBFBD><EFBFBD><EFBFBD>
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glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
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// <20><>ʼ<EFBFBD><CABC> GLAD : load all OpenGL function pointers
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if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress))
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{
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std::cout << "Failed to initialize GLAD" << std::endl;
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return -1;
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}
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// <20><>Ⱦѭ<C8BE><D1AD> (Render Loop)
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while (!glfwWindowShouldClose(window))
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{
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// input
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processInput(window);
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// <20><>Ⱦָ<C8BE><D6B8>
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glClearColor(0.2f, 0.3f, 0.3f, 1.0f); // ״̬<D7B4><CCAC><EFBFBD>ú<EFBFBD><C3BA><EFBFBD>
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glClear(GL_COLOR_BUFFER_BIT); // ״̬ʹ<CCAC>ú<EFBFBD><C3BA><EFBFBD>
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// glfw: swap buffers and poll IO events (keys pressed/released, mouse moved etc.)
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glfwSwapBuffers(window);
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glfwPollEvents();
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}
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// glfw: terminate, clearing all previously allocated GLFW resources
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glfwTerminate();
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return 0;
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}
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// <20><><EFBFBD>ڴ<EFBFBD>С<EFBFBD>ı<EFBFBD>ʱ<EFBFBD>Ļص<C4BB><D8B5><EFBFBD><EFBFBD><EFBFBD>
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void framebuffer_size_callback(GLFWwindow* window, int width, int height)
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{
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// <20>ӿ<EFBFBD>
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glViewport(0, 0, width, height);
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}
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// process all input: query GLFW whether relevant keys are pressed/released this frame and react accordingly
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void processInput(GLFWwindow* window)
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{
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if (glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS)
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glfwSetWindowShouldClose(window, true);
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}
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