source: trunk/src/opengl/qglframebufferobject.cpp@ 385

Last change on this file since 385 was 2, checked in by Dmitry A. Kuminov, 16 years ago

Initially imported qt-all-opensource-src-4.5.1 from Trolltech.
File size: 24.1 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** Contact: Qt Software Information ([email protected])
5**
6** This file is part of the QtOpenGL module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial Usage
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11** accordance with the Qt Commercial License Agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and Nokia.
14**
15** GNU Lesser General Public License Usage
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17** General Public License version 2.1 as published by the Free Software
18** Foundation and appearing in the file LICENSE.LGPL included in the
19** packaging of this file. Please review the following information to
20** ensure the GNU Lesser General Public License version 2.1 requirements
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28** GNU General Public License Usage
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30** General Public License version 3.0 as published by the Free Software
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40****************************************************************************/
41
42#include "qglframebufferobject.h"
43
44#include <qdebug.h>
45#include <private/qgl_p.h>
46#include <private/qpaintengine_opengl_p.h>
47#include <qglframebufferobject.h>
48#include <qlibrary.h>
49#include <qimage.h>
50
51QT_BEGIN_NAMESPACE
52
53extern QImage qt_gl_read_framebuffer(const QSize&, bool, bool);
54
55#define QGL_FUNC_CONTEXT QGLContext *ctx = d_ptr->ctx;
56
57#define QT_CHECK_GLERROR() \
58{ \
59 GLenum err = glGetError(); \
60 if (err != GL_NO_ERROR) { \
61 qDebug("[%s line %d] GL Error: %d", \
62 __FILE__, __LINE__, (int)err); \
63 } \
64}
65
66class QGLFramebufferObjectPrivate
67{
68public:
69 QGLFramebufferObjectPrivate() : depth_stencil_buffer(0), valid(false), bound(false), ctx(0) {}
70 ~QGLFramebufferObjectPrivate() {}
71
72 void init(const QSize& sz, QGLFramebufferObject::Attachment attachment,
73 GLenum internal_format, GLenum texture_target);
74 bool checkFramebufferStatus() const;
75 GLuint texture;
76 GLuint fbo;
77 GLuint depth_stencil_buffer;
78 GLenum target;
79 QSize size;
80 uint valid : 1;
81 uint bound : 1;
82 QGLFramebufferObject::Attachment fbo_attachment;
83 QGLContext *ctx; // for Windows extension ptrs
84};
85
86bool QGLFramebufferObjectPrivate::checkFramebufferStatus() const
87{
88 GLenum status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
89 switch(status) {
90 case GL_NO_ERROR:
91 case GL_FRAMEBUFFER_COMPLETE_EXT:
92 return true;
93 break;
94 case GL_FRAMEBUFFER_UNSUPPORTED_EXT:
95 qDebug("QGLFramebufferObject: Unsupported framebuffer format.");
96 break;
97 case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT:
98 qDebug("QGLFramebufferObject: Framebuffer incomplete attachment.");
99 break;
100 case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT:
101 qDebug("QGLFramebufferObject: Framebuffer incomplete, missing attachment.");
102 break;