func (self *MeshBuffer) CopyArraysToVBO() {
self.AllocBuffers()
vs := self.CalcVertexSize()
self.VertexBuffer.Bind(gl.ARRAY_BUFFER)
gl.BufferData(gl.ARRAY_BUFFER, vs*self.VertexCount,
self.vertexArray, gl.STATIC_DRAW)
gl.BufferUnbind(gl.ARRAY_BUFFER)
self.IndiceBuffer.Bind(gl.ELEMENT_ARRAY_BUFFER)
gl.BufferData(gl.ELEMENT_ARRAY_BUFFER, 2*self.IndiceCount,
self.indiceArray, gl.STATIC_DRAW)
gl.BufferUnbind(gl.ELEMENT_ARRAY_BUFFER)
}
func DrawVBO(buffer *MeshBuffer) {
vertexSize := buffer.CalcVertexSize()
buffer.VertexBuffer.Bind(gl.ARRAY_BUFFER)
buffer.IndiceBuffer.Bind(gl.ELEMENT_ARRAY_BUFFER)
gl.EnableClientState(gl.VERTEX_ARRAY)
gl.VertexPointerVBO(3, gl.FLOAT, vertexSize, 0)
if (buffer.Buffers & BUF_NORMAL) != 0 {
off := buffer.CalcVertexOffset(BUF_NORMAL)
gl.EnableClientState(gl.NORMAL_ARRAY)
gl.NormalPointerVBO(gl.FLOAT, vertexSize, off)
}
if (buffer.Buffers & BUF_COLOUR) != 0 {
off := buffer.CalcVertexOffset(BUF_COLOUR)
gl.EnableClientState(gl.COLOR_ARRAY)
gl.ColorPointerVBO(4, gl.UNSIGNED_BYTE, vertexSize, off)
}
if (buffer.Buffers & BUF_TEX_COORD0) != 0 {
off := buffer.CalcVertexOffset(BUF_TEX_COORD0)
gl.EnableClientState(gl.TEXTURE_COORD_ARRAY)
gl.TexCoordPointerVBO(2, gl.FLOAT, vertexSize, off)
}
gl.DrawElementsVBO(gl.TRIANGLES, gl.UNSIGNED_SHORT, buffer.IndiceCount)
if (buffer.Buffers & BUF_NORMAL) != 0 {
gl.DisableClientState(gl.NORMAL_ARRAY)
}
if (buffer.Buffers & BUF_COLOUR) != 0 {
gl.DisableClientState(gl.COLOR_ARRAY)
}
if (buffer.Buffers & BUF_TEX_COORD0) != 0 {
gl.DisableClientState(gl.TEXTURE_COORD_ARRAY)
}
gl.DisableClientState(gl.VERTEX_ARRAY)
gl.BufferUnbind(gl.ARRAY_BUFFER)
gl.BufferUnbind(gl.ELEMENT_ARRAY_BUFFER)
}