mirror of
https://github.com/NVIDIA/cuda-samples.git
synced 2024-11-24 21:19:17 +08:00
132 lines
3.8 KiB
C++
132 lines
3.8 KiB
C++
/*
|
|
* Copyright 1993-2015 NVIDIA Corporation. All rights reserved.
|
|
*
|
|
* Please refer to the NVIDIA end user license agreement (EULA) associated
|
|
* with this source code for terms and conditions that govern your use of
|
|
* this software. Any use, reproduction, disclosure, or distribution of
|
|
* this software and related documentation outside the terms of the EULA
|
|
* is strictly prohibited.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
Copyright (c) 2005,
|
|
Aaron Lefohn (lefohn@cs.ucdavis.edu)
|
|
Adam Moerschell (atmoerschell@ucdavis.edu)
|
|
All rights reserved.
|
|
|
|
This software is licensed under the BSD open-source license. See
|
|
http://www.opensource.org/licenses/bsd-license.php for more detail.
|
|
|
|
*************************************************************
|
|
Redistribution and use in source and binary forms, with or
|
|
without modification, are permitted provided that the following
|
|
conditions are met:
|
|
|
|
Redistributions of source code must retain the above copyright notice,
|
|
this list of conditions and the following disclaimer.
|
|
|
|
Redistributions in binary form must reproduce the above copyright notice,
|
|
this list of conditions and the following disclaimer in the documentation
|
|
and/or other materials provided with the distribution.
|
|
|
|
Neither the name of the University of California, Davis nor the names of
|
|
the contributors may be used to endorse or promote products derived
|
|
from this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
|
|
THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
|
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
|
|
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
|
|
THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
|
|
OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#define HELPERGL_EXTERN_GL_FUNC_IMPLEMENTATION
|
|
#include <helper_gl.h>
|
|
#include "renderbuffer.h"
|
|
#include <iostream>
|
|
using namespace std;
|
|
|
|
Renderbuffer::Renderbuffer()
|
|
: m_bufId(_CreateBufferId())
|
|
{}
|
|
|
|
Renderbuffer::Renderbuffer(GLenum internalFormat, int width, int height)
|
|
: m_bufId(_CreateBufferId())
|
|
{
|
|
Set(internalFormat, width, height);
|
|
}
|
|
|
|
Renderbuffer::~Renderbuffer()
|
|
{
|
|
glDeleteRenderbuffersEXT(1, &m_bufId);
|
|
}
|
|
|
|
void Renderbuffer::Bind()
|
|
{
|
|
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, m_bufId);
|
|
}
|
|
|
|
void Renderbuffer::Unbind()
|
|
{
|
|
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
|
|
}
|
|
|
|
void Renderbuffer::Set(GLenum internalFormat, int width, int height)
|
|
{
|
|
int maxSize = Renderbuffer::GetMaxSize();
|
|
|
|
if (width > maxSize || height > maxSize)
|
|
{
|
|
cerr << "Renderbuffer::Renderbuffer() ERROR:\n\t"
|
|
<< "Size too big (" << width << ", " << height << ")\n";
|
|
return;
|
|
}
|
|
|
|
// Guarded bind
|
|
GLint savedId = 0;
|
|
glGetIntegerv(GL_RENDERBUFFER_BINDING_EXT, &savedId);
|
|
|
|
if (savedId != (GLint)m_bufId)
|
|
{
|
|
Bind();
|
|
}
|
|
|
|
// Allocate memory for renderBuffer
|
|
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, internalFormat, width, height);
|
|
|
|
// Guarded unbind
|
|
if (savedId != (GLint)m_bufId)
|
|
{
|
|
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, savedId);
|
|
}
|
|
}
|
|
|
|
GLuint Renderbuffer::GetId() const
|
|
{
|
|
return m_bufId;
|
|
}
|
|
|
|
GLint Renderbuffer::GetMaxSize()
|
|
{
|
|
GLint maxAttach = 0;
|
|
glGetIntegerv(GL_MAX_RENDERBUFFER_SIZE_EXT, &maxAttach);
|
|
return maxAttach;
|
|
}
|
|
|
|
GLuint Renderbuffer::_CreateBufferId()
|
|
{
|
|
GLuint id = 0;
|
|
glGenRenderbuffersEXT(1, &id);
|
|
return id;
|
|
}
|
|
|