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/*
---------------------------------------------------------------------
Terrain Renderer using texture splatting and geomipmapping
Copyright (c) 2006 Jelmer Cnossen
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any
damages arising from the use of this software.
Permission is granted to anyone to use this software for any
purpose, including commercial applications, and to alter it and
redistribute it freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you
must not claim that you wrote the original software. If you use
this software in a product, an acknowledgment in the product
documentation would be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and
must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source
distribution.
Jelmer Cnossen
j.cnossen at gmail dot com
---------------------------------------------------------------------
*/
#ifndef JC_TERRAIN_VERTEX_BUFFER_H
#define JC_TERRAIN_VERTEX_BUFFER_H
namespace terrain {
class VertexBuffer
{
public:
VertexBuffer ();
~VertexBuffer ();
void Init(int bytesize); /// Allocate the buffer
void Free(); /// Free the buffer, called by destructor
uint GetSize() { return size; } /// returns the vertex buffer size in bytes
void* Bind (); /// returns the pointer that should be passed to glVertexPointer
void Unbind (); /// unbind it, so it can be locked again
void* LockData(); /// returns a pointer to the data, write-only
void UnlockData(); /// unlocks the data, so it can be used for rendering
static int TotalSize() { return totalBufferSize; } /// returns total buffer memory size used by all VertexBuffer instances
protected:
char *data;
GLuint id;
uint size;
uint type;
static int totalBufferSize;
};
class IndexBuffer : public VertexBuffer
{
public:
IndexBuffer ();
};
};
#endif
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