openblocks/src/mesh.cpp
2024-09-27 20:12:45 +02:00

36 lines
1,013 B
C++

#include <GL/glew.h>
#include <GL/gl.h>
#include "mesh.h"
Mesh::Mesh(int vertexCount, float *vertices) {
// Generate buffers
glGenBuffers(1, &VBO);
glGenVertexArrays(1, &VAO);
// Bind vertex data to VBO
glBindBuffer(GL_ARRAY_BUFFER, VBO);
glBufferData(GL_ARRAY_BUFFER, vertexCount * (3 + 3 + 2) * sizeof(float), vertices, GL_STATIC_DRAW);
// Bind vertex attributes to VAO
glBindVertexArray(VAO);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void*)(0 * sizeof(float)));
glEnableVertexAttribArray(0);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void*)(3 * sizeof(float)));
glEnableVertexAttribArray(1);
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void*)(6 * sizeof(float)));
glEnableVertexAttribArray(2);
}
Mesh::~Mesh() {
glDeleteBuffers(1, &VBO);
glDeleteVertexArrays(1, &VAO);
}
void Mesh::bind() {
glBindBuffer(GL_ARRAY_BUFFER, VBO);
glBindVertexArray(VAO);
}