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poGLBuffer.h
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poGLBuffer.h
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/*
* Copyright 2012 Potion Design. All rights reserved.
* This file is part of pocode.
*
* pocode is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* pocode is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with pocode. If not, see <http://www.gnu.org/licenses/>.
*
*/
#pragma once
class poGLBufferConfig {
public:
poGLBufferConfig();
poGLBufferConfig(GLenum target);
poGLBufferConfig(GLenum target, GLenum usage);
// vbo: GL_ARRAY_BUFFER, GL_ELEMENT_ARRAY_BUFFER
// pbo: GL_PIXEL_PACK_BUFFER, GL_PIXEL_UNPACK_BUFFER
GLenum target;
// probably doesn't matter, but options are
// GL_{STATIC|DYNAMIC|STREAM}_{READ|DRAW|COPY}
GLenum usage;
};
#define PO_BUFFER_OFFSET(i) ((char*)NULL + i)
class poGLBuffer {
public:
poGLBuffer(GLenum target, size_t size);
poGLBuffer(poGLBufferConfig config, size_t size);
~poGLBuffer();
void bind();
void unbind();
void bufferData(size_t size, const void *data, GLenum usage);
void bufferSubData(size_t offset, size_t size, const void *data);
void* map(GLenum access);
void unmap();
bool isValid() const;
uint getUid() const;
uint getSize() const;
poGLBufferConfig getConfig() const;
void setSize(size_t sz);
void setConfig(poGLBufferConfig config);
void setTarget(GLenum target);
void setUsage(GLenum usage);
private:
size_t size;
GLuint uid;
poGLBufferConfig config;
};