OpenGL Initialization

The next routine that we need to discuss is init() from Example 1.1. Once again, here’s the code to refresh your memory.

Click here to view code image

void init(void){    glGenVertexArrays(NumVAOs, VAOs);    glBindVertexArray(VAOs[Triangles]);    GLfloat  vertices[NumVertices][2] = {        { -0.90, -0.90 },  // Triangle 1        {  0.85, -0.90 },        { -0.90,  0.85 },        {  0.90, -0.85 },  // Triangle 2        {  0.90,  0.90 },        { -0.85,  0.90 }    };    glGenBuffers(NumBuffers, Buffers);    glBindBuffer(GL_ARRAY_BUFFER, Buffers[ArrayBuffer]);    glBufferData(GL_ARRAY_BUFFER, sizeof(vertices),                 vertices, GL_STATIC_DRAW);    ShaderInfo  shaders[] = {       { GL_VERTEX_SHADER, "triangles.vert" ...

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