Method init

src/draw.cpp:734–766

}

void Mesh::init() {
	if (isInitialized()) {
		return;
	}
    
    // NOTE: OpenGL 2.1 does not support vertex array functions
#ifdef VERTEX_ARRAYS_ENABLED
    GL_CHECK_ERR(glGenVertexArrays(1, &vao));
    GL_CHECK_ERR(glBindVertexArray(vao));
#endif

	// data buffers
    numVertices = 0;
    GL_CHECK_ERR(glGenBuffers((GLsizei)BufferType::Max, vbo));
	for (unsigned int c = 0; c < (unsigned int)BufferType::Max; ++c) {
        if (data[c].size()) {
            const auto& find = ElementsPerVBO.find((BufferType)c);
            assert(find != ElementsPerVBO.end());
            numVertices = std::max(numVertices, (unsigned int)data[c].size() / find->second);
            GL_CHECK_ERR(glBindBuffer(GL_ARRAY_BUFFER, vbo[c]));
            GL_CHECK_ERR(glBufferData(GL_ARRAY_BUFFER, data[c].size() * sizeof(float), data[c].data(), GL_STATIC_DRAW));
#ifdef VERTEX_ARRAYS_ENABLED
            GL_CHECK_ERR(glVertexAttribPointer(c, find->second, GL_FLOAT, GL_FALSE, 0, nullptr));
            GL_CHECK_ERR(glEnableVertexAttribArray(c));
#endif
        }
	}
#ifndef VERTEX_ARRAYS_ENABLED
    GL_CHECK_ERR(glBindBuffer(GL_ARRAY_BUFFER, 0));
#endif

	printlog("initialized mesh with %llu vertices", numVertices);
}

void Mesh::destroy() {
    if (vao) {