Buffers.java

// Helpful buffer methods I'm using

public long sizeOf(FloatBuffer buf) {
    return buf.capacity() * 4L;
}

upload.java

            int vPosition = 0;
            int vColor = 1;
            int vTex = 2;

            FloatBuffer vertBuf = Buffers.from(verts);
            FloatBuffer colorBuf = Buffers.from(colors);
            FloatBuffer uvBuf = Buffers.from(uvs);

            glBindVertexArray(vboptr);

            if (indexed) {
                glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, eboptr);
                glBufferData(GL_ELEMENT_ARRAY_BUFFER, indices.toArray(), GL_DYNAMIC_DRAW);
            }

            glBindBuffer(GL_ARRAY_BUFFER, bufptr);
            glBufferData(GL_ARRAY_BUFFER, Buffers.sizeOf(vertBuf) + Buffers.sizeOf(colorBuf) + Buffers.sizeOf(uvBuf), GL_DYNAMIC_DRAW);

            glBufferSubData(GL_ARRAY_BUFFER, 0, vertBuf);
            glBufferSubData(GL_ARRAY_BUFFER, Buffers.sizeOf(vertBuf), colorBuf);
            glBufferSubData(GL_ARRAY_BUFFER, Buffers.sizeOf(vertBuf) + Buffers.sizeOf(colorBuf), uvBuf);

            glVertexAttribPointer(vPosition, 3, GL_FLOAT, false, 0, 0);
            glVertexAttribPointer(vColor, 4, GL_FLOAT, false, 0, Buffers.sizeOf(vertBuf));
            glVertexAttribPointer(vTex, 2, GL_FLOAT, false, 0, Buffers.sizeOf(vertBuf) + Buffers.sizeOf(colorBuf));

            glEnableVertexAttribArray(vPosition);
            glEnableVertexAttribArray(vColor);
            glEnableVertexAttribArray(vTex);