75 lines
1.6 KiB
C++
75 lines
1.6 KiB
C++
#include <glad/glad.h>
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#include <iostream>
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#include "Graphics.h"
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#include "Shader.h"
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Graphics::Graphics() : window(nullptr), VAO(0), VBO(0) {}
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Graphics::~Graphics()
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{
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Shutdown();
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}
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void Graphics::Initialize(GLFWwindow* window)
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{
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this->window = window;
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if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress)) {
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std::cerr << "Failed to initialize GLAD" << std::endl;
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return;
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}
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LoadShaders();
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SetupBuffers();
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}
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void Graphics::LoadShaders()
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{
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shader = Shader(RESOURCES_PATH"shaders/shader.vs", RESOURCES_PATH"shaders/shader.fs");
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}
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void Graphics::SetupBuffers()
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{
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float vertices[] = {
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0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 0.0f,
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-0.5f, -0.5f, 0.0f, 0.0f, 1.0f, 0.0f,
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0.0f, 0.5f, 0.0f, 0.0f, 0.0f, 1.0f
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};
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glGenVertexArrays(1, &VAO);
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glGenBuffers(1, &VBO);
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glBindVertexArray(VAO);
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glBindBuffer(GL_ARRAY_BUFFER, VBO);
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glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
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glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)0);
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glEnableVertexAttribArray(0);
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glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)(3 * sizeof(float)));
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glEnableVertexAttribArray(1);
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glBindBuffer(GL_ARRAY_BUFFER, 0);
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glBindVertexArray(0);
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}
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void Graphics::FramebufferSizeCallback(GLFWwindow* window, int width, int height)
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{
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glViewport(0, 0, width, height);
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}
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void Graphics::Render() {
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glClear(GL_COLOR_BUFFER_BIT);
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shader.Use();
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glBindVertexArray(VAO);
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glDrawArrays(GL_TRIANGLES, 0, 3);
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}
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void Graphics::Shutdown()
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{
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glDeleteVertexArrays(1, &VAO);
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glDeleteBuffers(1, &VBO);
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}
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