567 lines
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HTML
567 lines
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HTML
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<h1 class="title">glbuffers.h Example File</h1>
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<span class="small-subtitle">demos/boxes/glbuffers.h</span>
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<!-- $$$demos/boxes/glbuffers.h-description -->
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<div class="descr"> <a name="details"></a>
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<pre class="cpp"> <span class="comment">/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the demonstration applications of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
|
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/</span>
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<span class="preprocessor">#ifndef GLBUFFERS_H</span>
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<span class="preprocessor">#define GLBUFFERS_H</span>
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<span class="comment">//#include <GL/glew.h></span>
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<span class="preprocessor">#include "glextensions.h"</span>
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<span class="preprocessor">#include <QtGui></span>
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<span class="preprocessor">#include <QtOpenGL></span>
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<span class="preprocessor">#define BUFFER_OFFSET(i) ((char*)0 + (i))</span>
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<span class="preprocessor">#define SIZE_OF_MEMBER(cls, member) sizeof(static_cast<cls *>(0)->member)</span>
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<span class="preprocessor">#define GLBUFFERS_ASSERT_OPENGL(prefix, assertion, returnStatement) \
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if (m_failed || !(assertion)) { \
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if (!m_failed) qCritical(prefix ": The necessary OpenGL functions are not available."); \
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m_failed = true; \
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returnStatement; \
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}</span>
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<span class="type">void</span> qgluPerspective(GLdouble fovy<span class="operator">,</span> GLdouble aspect<span class="operator">,</span> GLdouble zNear<span class="operator">,</span> GLdouble zFar);
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<span class="keyword">class</span> QMatrix4x4;
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<span class="keyword">class</span> GLTexture
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{
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|
<span class="keyword">public</span>:
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GLTexture();
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<span class="keyword">virtual</span> <span class="operator">~</span>GLTexture();
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<span class="keyword">virtual</span> <span class="type">void</span> bind() <span class="operator">=</span> <span class="number">0</span>;
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<span class="keyword">virtual</span> <span class="type">void</span> unbind() <span class="operator">=</span> <span class="number">0</span>;
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<span class="keyword">virtual</span> <span class="type">bool</span> failed() <span class="keyword">const</span> {<span class="keyword">return</span> m_failed;}
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<span class="keyword">protected</span>:
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GLuint m_texture;
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<span class="type">bool</span> m_failed;
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};
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<span class="keyword">class</span> GLFrameBufferObject
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{
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<span class="keyword">public</span>:
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<span class="keyword">friend</span> <span class="keyword">class</span> GLRenderTargetCube;
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<span class="comment">// friend class GLRenderTarget2D;</span>
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GLFrameBufferObject(<span class="type">int</span> width<span class="operator">,</span> <span class="type">int</span> height);
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<span class="keyword">virtual</span> <span class="operator">~</span>GLFrameBufferObject();
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<span class="type">bool</span> isComplete();
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<span class="keyword">virtual</span> <span class="type">bool</span> failed() <span class="keyword">const</span> {<span class="keyword">return</span> m_failed;}
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<span class="keyword">protected</span>:
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<span class="type">void</span> setAsRenderTarget(<span class="type">bool</span> state <span class="operator">=</span> <span class="keyword">true</span>);
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GLuint m_fbo;
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GLuint m_depthBuffer;
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<span class="type">int</span> m_width<span class="operator">,</span> m_height;
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<span class="type">bool</span> m_failed;
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};
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<span class="keyword">class</span> GLTexture2D : <span class="keyword">public</span> GLTexture
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{
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<span class="keyword">public</span>:
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GLTexture2D(<span class="type">int</span> width<span class="operator">,</span> <span class="type">int</span> height);
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GLTexture2D(<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span><span class="operator">&</span> fileName<span class="operator">,</span> <span class="type">int</span> width <span class="operator">=</span> <span class="number">0</span><span class="operator">,</span> <span class="type">int</span> height <span class="operator">=</span> <span class="number">0</span>);
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<span class="type">void</span> load(<span class="type">int</span> width<span class="operator">,</span> <span class="type">int</span> height<span class="operator">,</span> <span class="type"><a href="qcolor.html#QRgb-typedef">QRgb</a></span> <span class="operator">*</span>data);
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<span class="keyword">virtual</span> <span class="type">void</span> bind();
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|
<span class="keyword">virtual</span> <span class="type">void</span> unbind();
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};
|
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<span class="keyword">class</span> GLTexture3D : <span class="keyword">public</span> GLTexture
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{
|
|
<span class="keyword">public</span>:
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GLTexture3D(<span class="type">int</span> width<span class="operator">,</span> <span class="type">int</span> height<span class="operator">,</span> <span class="type">int</span> depth);
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<span class="comment">// TODO: Implement function below</span>
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<span class="comment">//GLTexture3D(const QString& fileName, int width = 0, int height = 0);</span>
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<span class="type">void</span> load(<span class="type">int</span> width<span class="operator">,</span> <span class="type">int</span> height<span class="operator">,</span> <span class="type">int</span> depth<span class="operator">,</span> <span class="type"><a href="qcolor.html#QRgb-typedef">QRgb</a></span> <span class="operator">*</span>data);
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<span class="keyword">virtual</span> <span class="type">void</span> bind();
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<span class="keyword">virtual</span> <span class="type">void</span> unbind();
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};
|
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<span class="keyword">class</span> GLTextureCube : <span class="keyword">public</span> GLTexture
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{
|
|
<span class="keyword">public</span>:
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|
GLTextureCube(<span class="type">int</span> size);
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|
GLTextureCube(<span class="keyword">const</span> <span class="type"><a href="qstringlist.html">QStringList</a></span><span class="operator">&</span> fileNames<span class="operator">,</span> <span class="type">int</span> size <span class="operator">=</span> <span class="number">0</span>);
|
|
<span class="type">void</span> load(<span class="type">int</span> size<span class="operator">,</span> <span class="type">int</span> face<span class="operator">,</span> <span class="type"><a href="qcolor.html#QRgb-typedef">QRgb</a></span> <span class="operator">*</span>data);
|
|
<span class="keyword">virtual</span> <span class="type">void</span> bind();
|
|
<span class="keyword">virtual</span> <span class="type">void</span> unbind();
|
|
};
|
|
|
|
<span class="comment">// TODO: Define and implement class below</span>
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<span class="comment">//class GLRenderTarget2D : public GLTexture2D</span>
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|
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<span class="keyword">class</span> GLRenderTargetCube : <span class="keyword">public</span> GLTextureCube
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{
|
|
<span class="keyword">public</span>:
|
|
GLRenderTargetCube(<span class="type">int</span> size);
|
|
<span class="comment">// begin rendering to one of the cube's faces. 0 <= face < 6</span>
|
|
<span class="type">void</span> begin(<span class="type">int</span> face);
|
|
<span class="comment">// end rendering</span>
|
|
<span class="type">void</span> end();
|
|
<span class="keyword">virtual</span> <span class="type">bool</span> failed() {<span class="keyword">return</span> m_failed <span class="operator">|</span><span class="operator">|</span> m_fbo<span class="operator">.</span>failed();}
|
|
|
|
<span class="keyword">static</span> <span class="type">void</span> getViewMatrix(QMatrix4x4<span class="operator">&</span> mat<span class="operator">,</span> <span class="type">int</span> face);
|
|
<span class="keyword">static</span> <span class="type">void</span> getProjectionMatrix(QMatrix4x4<span class="operator">&</span> mat<span class="operator">,</span> <span class="type">float</span> nearZ<span class="operator">,</span> <span class="type">float</span> farZ);
|
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<span class="keyword">private</span>:
|
|
GLFrameBufferObject m_fbo;
|
|
};
|
|
|
|
<span class="keyword">struct</span> VertexDescription
|
|
{
|
|
<span class="keyword">enum</span>
|
|
{
|
|
Null <span class="operator">=</span> <span class="number">0</span><span class="operator">,</span> <span class="comment">// Terminates a VertexDescription array</span>
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|
Position<span class="operator">,</span>
|
|
TexCoord<span class="operator">,</span>
|
|
Normal<span class="operator">,</span>
|
|
Color<span class="operator">,</span>
|
|
};
|
|
<span class="type">int</span> field; <span class="comment">// Position, TexCoord, Normal, Color</span>
|
|
<span class="type">int</span> type; <span class="comment">// GL_FLOAT, GL_UNSIGNED_BYTE</span>
|
|
<span class="type">int</span> count; <span class="comment">// number of elements</span>
|
|
<span class="type">int</span> offset; <span class="comment">// field's offset into vertex struct</span>
|
|
<span class="type">int</span> index; <span class="comment">// 0 (unused at the moment)</span>
|
|
};
|
|
|
|
<span class="comment">// Implementation of interleaved buffers.</span>
|
|
<span class="comment">// 'T' is a struct which must include a null-terminated static array</span>
|
|
<span class="comment">// 'VertexDescription* description'.</span>
|
|
<span class="comment">// Example:</span>
|
|
<span class="comment">/*
|
|
struct Vertex
|
|
{
|
|
GLfloat position[3];
|
|
GLfloat texCoord[2];
|
|
GLfloat normal[3];
|
|
GLbyte color[4];
|
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static VertexDescription description[];
|
|
};
|
|
|
|
VertexDescription Vertex::description[] = {
|
|
{VertexDescription::Position, GL_FLOAT, SIZE_OF_MEMBER(Vertex, position) / sizeof(GLfloat), offsetof(Vertex, position), 0},
|
|
{VertexDescription::TexCoord, GL_FLOAT, SIZE_OF_MEMBER(Vertex, texCoord) / sizeof(GLfloat), offsetof(Vertex, texCoord), 0},
|
|
{VertexDescription::Normal, GL_FLOAT, SIZE_OF_MEMBER(Vertex, normal) / sizeof(GLfloat), offsetof(Vertex, normal), 0},
|
|
{VertexDescription::Color, GL_BYTE, SIZE_OF_MEMBER(Vertex, color) / sizeof(GLbyte), offsetof(Vertex, color), 0},
|
|
{VertexDescription::Null, 0, 0, 0, 0},
|
|
};
|
|
*/</span>
|
|
<span class="keyword">template</span><span class="operator"><</span><span class="keyword">class</span> T<span class="operator">></span>
|
|
<span class="keyword">class</span> GLVertexBuffer
|
|
{
|
|
<span class="keyword">public</span>:
|
|
GLVertexBuffer(<span class="type">int</span> length<span class="operator">,</span> <span class="keyword">const</span> T <span class="operator">*</span>data <span class="operator">=</span> <span class="number">0</span><span class="operator">,</span> <span class="type">int</span> mode <span class="operator">=</span> GL_STATIC_DRAW)
|
|
: m_length(<span class="number">0</span>)
|
|
<span class="operator">,</span> m_mode(mode)
|
|
<span class="operator">,</span> m_buffer(<span class="number">0</span>)
|
|
<span class="operator">,</span> m_failed(<span class="keyword">false</span>)
|
|
{
|
|
GLBUFFERS_ASSERT_OPENGL(<span class="string">"GLVertexBuffer::GLVertexBuffer"</span><span class="operator">,</span> glGenBuffers <span class="operator">&</span><span class="operator">&</span> glBindBuffer <span class="operator">&</span><span class="operator">&</span> glBufferData<span class="operator">,</span> <span class="keyword">return</span>)
|
|
|
|
glGenBuffers(<span class="number">1</span><span class="operator">,</span> <span class="operator">&</span>m_buffer);
|
|
glBindBuffer(GL_ARRAY_BUFFER<span class="operator">,</span> m_buffer);
|
|
glBufferData(GL_ARRAY_BUFFER<span class="operator">,</span> (m_length <span class="operator">=</span> length) <span class="operator">*</span> <span class="keyword">sizeof</span>(T)<span class="operator">,</span> data<span class="operator">,</span> mode);
|
|
}
|
|
|
|
<span class="operator">~</span>GLVertexBuffer()
|
|
{
|
|
GLBUFFERS_ASSERT_OPENGL(<span class="string">"GLVertexBuffer::~GLVertexBuffer"</span><span class="operator">,</span> glDeleteBuffers<span class="operator">,</span> <span class="keyword">return</span>)
|
|
|
|
glDeleteBuffers(<span class="number">1</span><span class="operator">,</span> <span class="operator">&</span>m_buffer);
|
|
}
|
|
|
|
<span class="type">void</span> bind()
|
|
{
|
|
GLBUFFERS_ASSERT_OPENGL(<span class="string">"GLVertexBuffer::bind"</span><span class="operator">,</span> glBindBuffer<span class="operator">,</span> <span class="keyword">return</span>)
|
|
|
|
glBindBuffer(GL_ARRAY_BUFFER<span class="operator">,</span> m_buffer);
|
|
<span class="keyword">for</span> (VertexDescription <span class="operator">*</span>desc <span class="operator">=</span> T<span class="operator">::</span>description; desc<span class="operator">-</span><span class="operator">></span>field <span class="operator">!</span><span class="operator">=</span> VertexDescription<span class="operator">::</span>Null; <span class="operator">+</span><span class="operator">+</span>desc) {
|
|
<span class="keyword">switch</span> (desc<span class="operator">-</span><span class="operator">></span>field) {
|
|
<span class="keyword">case</span> VertexDescription<span class="operator">::</span>Position:
|
|
glVertexPointer(desc<span class="operator">-</span><span class="operator">></span>count<span class="operator">,</span> desc<span class="operator">-</span><span class="operator">></span>type<span class="operator">,</span> <span class="keyword">sizeof</span>(T)<span class="operator">,</span> BUFFER_OFFSET(desc<span class="operator">-</span><span class="operator">></span>offset));
|
|
glEnableClientState(GL_VERTEX_ARRAY);
|
|
<span class="keyword">break</span>;
|
|
<span class="keyword">case</span> VertexDescription<span class="operator">::</span>TexCoord:
|
|
glTexCoordPointer(desc<span class="operator">-</span><span class="operator">></span>count<span class="operator">,</span> desc<span class="operator">-</span><span class="operator">></span>type<span class="operator">,</span> <span class="keyword">sizeof</span>(T)<span class="operator">,</span> BUFFER_OFFSET(desc<span class="operator">-</span><span class="operator">></span>offset));
|
|
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
|
|
<span class="keyword">break</span>;
|
|
<span class="keyword">case</span> VertexDescription<span class="operator">::</span>Normal:
|
|
glNormalPointer(desc<span class="operator">-</span><span class="operator">></span>type<span class="operator">,</span> <span class="keyword">sizeof</span>(T)<span class="operator">,</span> BUFFER_OFFSET(desc<span class="operator">-</span><span class="operator">></span>offset));
|
|
glEnableClientState(GL_NORMAL_ARRAY);
|
|
<span class="keyword">break</span>;
|
|
<span class="keyword">case</span> VertexDescription<span class="operator">::</span>Color:
|
|
glColorPointer(desc<span class="operator">-</span><span class="operator">></span>count<span class="operator">,</span> desc<span class="operator">-</span><span class="operator">></span>type<span class="operator">,</span> <span class="keyword">sizeof</span>(T)<span class="operator">,</span> BUFFER_OFFSET(desc<span class="operator">-</span><span class="operator">></span>offset));
|
|
glEnableClientState(GL_COLOR_ARRAY);
|
|
<span class="keyword">break</span>;
|
|
<span class="keyword">default</span>:
|
|
<span class="keyword">break</span>;
|
|
}
|
|
}
|
|
}
|
|
|
|
<span class="type">void</span> unbind()
|
|
{
|
|
GLBUFFERS_ASSERT_OPENGL(<span class="string">"GLVertexBuffer::unbind"</span><span class="operator">,</span> glBindBuffer<span class="operator">,</span> <span class="keyword">return</span>)
|
|
|
|
glBindBuffer(GL_ARRAY_BUFFER<span class="operator">,</span> <span class="number">0</span>);
|
|
<span class="keyword">for</span> (VertexDescription <span class="operator">*</span>desc <span class="operator">=</span> T<span class="operator">::</span>description; desc<span class="operator">-</span><span class="operator">></span>field <span class="operator">!</span><span class="operator">=</span> VertexDescription<span class="operator">::</span>Null; <span class="operator">+</span><span class="operator">+</span>desc) {
|
|
<span class="keyword">switch</span> (desc<span class="operator">-</span><span class="operator">></span>field) {
|
|
<span class="keyword">case</span> VertexDescription<span class="operator">::</span>Position:
|
|
glDisableClientState(GL_VERTEX_ARRAY);
|
|
<span class="keyword">break</span>;
|
|
<span class="keyword">case</span> VertexDescription<span class="operator">::</span>TexCoord:
|
|
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
|
|
<span class="keyword">break</span>;
|
|
<span class="keyword">case</span> VertexDescription<span class="operator">::</span>Normal:
|
|
glDisableClientState(GL_NORMAL_ARRAY);
|
|
<span class="keyword">break</span>;
|
|
<span class="keyword">case</span> VertexDescription<span class="operator">::</span>Color:
|
|
glDisableClientState(GL_COLOR_ARRAY);
|
|
<span class="keyword">break</span>;
|
|
<span class="keyword">default</span>:
|
|
<span class="keyword">break</span>;
|
|
}
|
|
}
|
|
}
|
|
|
|
<span class="type">int</span> length() <span class="keyword">const</span> {<span class="keyword">return</span> m_length;}
|
|
|
|
T <span class="operator">*</span>lock()
|
|
{
|
|
GLBUFFERS_ASSERT_OPENGL(<span class="string">"GLVertexBuffer::lock"</span><span class="operator">,</span> glBindBuffer <span class="operator">&</span><span class="operator">&</span> glMapBuffer<span class="operator">,</span> <span class="keyword">return</span> <span class="number">0</span>)
|
|
|
|
glBindBuffer(GL_ARRAY_BUFFER<span class="operator">,</span> m_buffer);
|
|
<span class="comment">//glBufferData(GL_ARRAY_BUFFER, m_length, NULL, m_mode);</span>
|
|
GLvoid<span class="operator">*</span> buffer <span class="operator">=</span> glMapBuffer(GL_ARRAY_BUFFER<span class="operator">,</span> GL_READ_WRITE);
|
|
m_failed <span class="operator">=</span> (buffer <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span>);
|
|
<span class="keyword">return</span> <span class="keyword">reinterpret_cast</span><span class="operator"><</span>T <span class="operator">*</span><span class="operator">></span>(buffer);
|
|
}
|
|
|
|
<span class="type">void</span> unlock()
|
|
{
|
|
GLBUFFERS_ASSERT_OPENGL(<span class="string">"GLVertexBuffer::unlock"</span><span class="operator">,</span> glBindBuffer <span class="operator">&</span><span class="operator">&</span> glUnmapBuffer<span class="operator">,</span> <span class="keyword">return</span>)
|
|
|
|
glBindBuffer(GL_ARRAY_BUFFER<span class="operator">,</span> m_buffer);
|
|
glUnmapBuffer(GL_ARRAY_BUFFER);
|
|
}
|
|
|
|
<span class="type">bool</span> failed()
|
|
{
|
|
<span class="keyword">return</span> m_failed;
|
|
}
|
|
|
|
<span class="keyword">private</span>:
|
|
<span class="type">int</span> m_length<span class="operator">,</span> m_mode;
|
|
GLuint m_buffer;
|
|
<span class="type">bool</span> m_failed;
|
|
};
|
|
|
|
<span class="keyword">template</span><span class="operator"><</span><span class="keyword">class</span> T<span class="operator">></span>
|
|
<span class="keyword">class</span> GLIndexBuffer
|
|
{
|
|
<span class="keyword">public</span>:
|
|
GLIndexBuffer(<span class="type">int</span> length<span class="operator">,</span> <span class="keyword">const</span> T <span class="operator">*</span>data <span class="operator">=</span> <span class="number">0</span><span class="operator">,</span> <span class="type">int</span> mode <span class="operator">=</span> GL_STATIC_DRAW)
|
|
: m_length(<span class="number">0</span>)
|
|
<span class="operator">,</span> m_mode(mode)
|
|
<span class="operator">,</span> m_buffer(<span class="number">0</span>)
|
|
<span class="operator">,</span> m_failed(<span class="keyword">false</span>)
|
|
{
|
|
GLBUFFERS_ASSERT_OPENGL(<span class="string">"GLIndexBuffer::GLIndexBuffer"</span><span class="operator">,</span> glGenBuffers <span class="operator">&</span><span class="operator">&</span> glBindBuffer <span class="operator">&</span><span class="operator">&</span> glBufferData<span class="operator">,</span> <span class="keyword">return</span>)
|
|
|
|
glGenBuffers(<span class="number">1</span><span class="operator">,</span> <span class="operator">&</span>m_buffer);
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER<span class="operator">,</span> m_buffer);
|
|
glBufferData(GL_ELEMENT_ARRAY_BUFFER<span class="operator">,</span> (m_length <span class="operator">=</span> length) <span class="operator">*</span> <span class="keyword">sizeof</span>(T)<span class="operator">,</span> data<span class="operator">,</span> mode);
|
|
}
|
|
|
|
<span class="operator">~</span>GLIndexBuffer()
|
|
{
|
|
GLBUFFERS_ASSERT_OPENGL(<span class="string">"GLIndexBuffer::~GLIndexBuffer"</span><span class="operator">,</span> glDeleteBuffers<span class="operator">,</span> <span class="keyword">return</span>)
|
|
|
|
glDeleteBuffers(<span class="number">1</span><span class="operator">,</span> <span class="operator">&</span>m_buffer);
|
|
}
|
|
|
|
<span class="type">void</span> bind()
|
|
{
|
|
GLBUFFERS_ASSERT_OPENGL(<span class="string">"GLIndexBuffer::bind"</span><span class="operator">,</span> glBindBuffer<span class="operator">,</span> <span class="keyword">return</span>)
|
|
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER<span class="operator">,</span> m_buffer);
|
|
}
|
|
|
|
<span class="type">void</span> unbind()
|
|
{
|
|
GLBUFFERS_ASSERT_OPENGL(<span class="string">"GLIndexBuffer::unbind"</span><span class="operator">,</span> glBindBuffer<span class="operator">,</span> <span class="keyword">return</span>)
|
|
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER<span class="operator">,</span> <span class="number">0</span>);
|
|
}
|
|
|
|
<span class="type">int</span> length() <span class="keyword">const</span> {<span class="keyword">return</span> m_length;}
|
|
|
|
T <span class="operator">*</span>lock()
|
|
{
|
|
GLBUFFERS_ASSERT_OPENGL(<span class="string">"GLIndexBuffer::lock"</span><span class="operator">,</span> glBindBuffer <span class="operator">&</span><span class="operator">&</span> glMapBuffer<span class="operator">,</span> <span class="keyword">return</span> <span class="number">0</span>)
|
|
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER<span class="operator">,</span> m_buffer);
|
|
GLvoid<span class="operator">*</span> buffer <span class="operator">=</span> glMapBuffer(GL_ELEMENT_ARRAY_BUFFER<span class="operator">,</span> GL_READ_WRITE);
|
|
m_failed <span class="operator">=</span> (buffer <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span>);
|
|
<span class="keyword">return</span> <span class="keyword">reinterpret_cast</span><span class="operator"><</span>T <span class="operator">*</span><span class="operator">></span>(buffer);
|
|
}
|
|
|
|
<span class="type">void</span> unlock()
|
|
{
|
|
GLBUFFERS_ASSERT_OPENGL(<span class="string">"GLIndexBuffer::unlock"</span><span class="operator">,</span> glBindBuffer <span class="operator">&</span><span class="operator">&</span> glUnmapBuffer<span class="operator">,</span> <span class="keyword">return</span>)
|
|
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER<span class="operator">,</span> m_buffer);
|
|
glUnmapBuffer(GL_ELEMENT_ARRAY_BUFFER);
|
|
}
|
|
|
|
<span class="type">bool</span> failed()
|
|
{
|
|
<span class="keyword">return</span> m_failed;
|
|
}
|
|
|
|
<span class="keyword">private</span>:
|
|
<span class="type">int</span> m_length<span class="operator">,</span> m_mode;
|
|
GLuint m_buffer;
|
|
<span class="type">bool</span> m_failed;
|
|
};
|
|
|
|
<span class="preprocessor">#endif</span></pre>
|
|
</div>
|
|
<!-- @@@demos/boxes/glbuffers.h -->
|
|
</div>
|
|
</div>
|
|
</div>
|
|
<div class="ft">
|
|
<span></span>
|
|
</div>
|
|
</div>
|
|
<div class="footer">
|
|
<p>
|
|
<acronym title="Copyright">©</acronym> 2015 The Qt Company Ltd.
|
|
Documentation contributions included herein are the copyrights of
|
|
their respective owners.</p>
|
|
<br />
|
|
<p>
|
|
The documentation provided herein is licensed under the terms of the
|
|
<a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation
|
|
License version 1.3</a> as published by the Free Software Foundation.</p>
|
|
<p>
|
|
Documentation sources may be obtained from <a href="http://www.qt-project.org">
|
|
www.qt-project.org</a>.</p>
|
|
<br />
|
|
<p>
|
|
Qt and respective logos are trademarks of The Qt Company Ltd
|
|
in Finland and/or other countries worldwide. All other trademarks are property
|
|
of their respective owners. <a title="Privacy Policy"
|
|
href="http://en.gitorious.org/privacy_policy/">Privacy Policy</a></p>
|
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</div>
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|
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