-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
+#include <stdexcept>
#include "arb_vertex_buffer_object.h"
#include "extension.h"
#include "buffer.h"
+using namespace std;
+
namespace Msp {
namespace GL {
glDeleteBuffersARB(1, &id);
}
-void Buffer::bind(BufferType t) const
-{
- glBindBufferARB(t, id);
- binding(t)=this;
-}
-
-void Buffer::maybe_bind() const
-{
- if(binding(type)!=this)
- bind();
-}
-
void Buffer::set_usage(BufferUsage u)
{
- usage=u;
+ usage = u;
}
void Buffer::data(unsigned size, const void *d)
{
- maybe_bind();
+ const Buffer *old = current(type);
+ bind();
glBufferDataARB(type, size, d, usage);
+ restore(old, type);
}
void Buffer::sub_data(unsigned offset, unsigned size, const void *d)
{
- maybe_bind();
+ const Buffer *old = current(type);
+ bind();
glBufferSubDataARB(type, offset, size, d);
+ restore(old, type);
}
-void Buffer::unbind(BufferType type)
+void Buffer::bind_to(BufferType t) const
{
- const Buffer *&ptr=binding(type);
+ const Buffer *&ptr = binding(t);
+ if(ptr!=this)
+ {
+ glBindBufferARB(t, id);
+ ptr = this;
+ }
+}
+
+void Buffer::unbind_from(BufferType type)
+{
+ const Buffer *&ptr = binding(type);
if(ptr)
{
glBindBufferARB(type, 0);
- ptr=0;
+ ptr = 0;
}
}
case ELEMENT_ARRAY_BUFFER: return bound[1];
case PIXEL_PACK_BUFFER: return bound[2];
case PIXEL_UNPACK_BUFFER: return bound[3];
- default: throw InvalidParameterValue("Invalid buffer type");
+ default: throw invalid_argument("Buffer::binding");
+ }
+}
+
+void Buffer::restore(const Buffer *buf, BufferType type)
+{
+ if(buf!=current(type))
+ {
+ if(buf)
+ buf->bind_to(type);
+ else
+ unbind_from(type);
}
}
-const Buffer *Buffer::bound[4]={ 0, 0, 0, 0 };
+const Buffer *Buffer::bound[4] = { 0, 0, 0, 0 };
} // namespace GL
} // namespace Msp