3 This file is part of libmspgl
4 Copyright © 2007 Mikko Rasa, Mikkosoft Productions
5 Distributed under the LGPL
8 #include "arb_vertex_buffer_object.h"
15 Buffer::Buffer(BufferType t):
19 static RequireExtension _req_vbo("GL_ARB_vertex_buffer_object");
20 if(type==PIXEL_PACK_BUFFER || type==PIXEL_UNPACK_BUFFER)
21 static RequireExtension _req_pbo("GL_ARB_pixel_buffer_object");
23 glGenBuffersARB(1, &id);
28 glDeleteBuffersARB(1, &id);
31 void Buffer::bind(BufferType t) const
33 glBindBufferARB(t, id);
37 void Buffer::maybe_bind() const
39 if(binding(type)!=this)
43 void Buffer::set_usage(BufferUsage u)
48 void Buffer::data(unsigned size, const void *d)
51 glBufferDataARB(type, size, d, usage);
54 void Buffer::sub_data(unsigned offset, unsigned size, const void *d)
57 glBufferSubDataARB(type, offset, size, d);
60 void Buffer::unbind(BufferType type)
62 const Buffer *&ptr = binding(type);
65 glBindBufferARB(type, 0);
70 const Buffer *&Buffer::binding(BufferType type)
74 case ARRAY_BUFFER: return bound[0];
75 case ELEMENT_ARRAY_BUFFER: return bound[1];
76 case PIXEL_PACK_BUFFER: return bound[2];
77 case PIXEL_UNPACK_BUFFER: return bound[3];
78 default: throw InvalidParameterValue("Invalid buffer type");
82 const Buffer *Buffer::bound[4] = { 0, 0, 0, 0 };