Vertex Attributes, Vertex Arrays, and Buffer Objects - Praise for OpenGL ES 30 Programming Guide - page 149

Example 6-6 Drawing with a Buffer Object per Attribute

#define VERTEX_POS_SIZE 3 // x, y, and z
#define VERTEX_COLOR_SIZE 4 // r, g, b, and a

#define VERTEX_POS_INDX 0
#define VERTEX_COLOR_INDX 1

void DrawPrimitiveWithVBOs(ESContext *esContext,
GLint numVertices, GLfloat **vtxBuf,
GLint *vtxStrides, GLint numIndices,
GLushort *indices)
{
UserData *userData = (UserData*) esContext->userData;
// vboIds[0] - used to store vertex position
// vboIds[1] - used to store vertex color
// vboIds[2] - used to store element indices
if ( userData->vboIds[0] == 0 && userData->vboIds[1] == 0 &&
userData->vboIds[2] == 0)
{
// allocate only on the first draw
glGenBuffers(3, userData->vboIds);

glBindBuffer(GL_ARRAY_BUFFER, userData->vboIds[0]);
glBufferData(GL_ARRAY_BUFFER, vtxStrides[0] * numVertices,
vtxBuf[0], GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, userData->vboIds[1]);
glBufferData(GL_ARRAY_BUFFER, vtxStrides[1] * numVertices,
vtxBuf[1], GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER,
userData->vboIds[2]);
glBufferData(GL_ELEMENT_ARRAY_BUFFER,
sizeof(GLushort) * numIndices,
indices, GL_STATIC_DRAW);
}

glBindBuffer(GL_ARRAY_BUFFER, userData->vboIds[0]);
glEnableVertexAttribArray(VERTEX_POS_INDX);
glVertexAttribPointer(VERTEX_POS_INDX, VERTEX_POS_SIZE,
GL_FLOAT, GL_FALSE, vtxStrides[0], 0);

glBindBuffer(GL_ARRAY_BUFFER, userData->vboIds[1]);
glEnableVertexAttribArray(VERTEX_COLOR_INDX);
glVertexAttribPointer(VERTEX_COLOR_INDX,
VERTEX_COLOR_SIZE,
GL_FLOAT, GL_FALSE, vtxStrides[1], 0);
(continues)