Okay, I reduced the uses of shaders to one only and I've implemented the uses of VBO. I'm unpacking the triangle strip to a triangle list into a structure with 512 * sizeof(Vertex) size. I'm building and drawing the VBO when the structure is filled with this:

glBufferData(GL_ARRAY_BUFFER, m_vertexcacheIndex * sizeof(SuperVertex), m_vertexcache, GL_DYNAMIC_DRAW);
glVertexAttribPointer(vert_position, 3, GL_FLOAT, GL_FALSE, sizeof(SuperVertex), BUFFER_OFFSET(0 * sizeof(float)));
glVertexAttribPointer(vert_texture, 3, GL_FLOAT, GL_FALSE, sizeof(SuperVertex), BUFFER_OFFSET(3 * sizeof(float)));
glVertexAttribPointer(vert_color, 4, GL_FLOAT, GL_FALSE, sizeof(SuperVertex), BUFFER_OFFSET(6 * sizeof(float)));
glDrawArrays(GL_TRIANGLES, 0, m_vertexcacheIndex);
m_vertexcacheIndex = 0;

where m_vertexcacheIndex is the vertices count inside th structure, m_vertexcache is the structure itself and supervertex is the structure definition. I debugged the software with gDEBugger, before VBO I was doing 12k gl calls per frame, now only 120 calls but I have bad performances. Before 720fps, now 350... 

Okay, I reduced the uses of shaders to one only and I've implemented the uses of VBO. I'm unpacking the triangle strip to a triangle list into a structure with 512 * sizeof(Vertex) size. I'm building and drawing the VBO when the structure is filled with this:

glBufferData(GL_ARRAY_BUFFER, m_vertexcacheIndex * sizeof(SuperVertex), m_vertexcache, GL_DYNAMIC_DRAW);
glVertexAttribPointer(vert_position, 3, GL_FLOAT, GL_FALSE, sizeof(SuperVertex), BUFFER_OFFSET(0 * sizeof(float)));
glVertexAttribPointer(vert_texture, 3, GL_FLOAT, GL_FALSE, sizeof(SuperVertex), BUFFER_OFFSET(3 * sizeof(float)));
glVertexAttribPointer(vert_color, 4, GL_FLOAT, GL_FALSE, sizeof(SuperVertex), BUFFER_OFFSET(6 * sizeof(float)));
glDrawArrays(GL_TRIANGLES, 0, m_vertexcacheIndex);
m_vertexcacheIndex = 0;

where m_vertexcacheIndex is the vertices count inside th structure, m_vertexcache is the structure itself and supervertex is the structure definition. I debugged the software with gDEBugger, before VBO I was doing 12k gl calls, now only 120 calls but now I have bad performances. Before 720fps, now 350...