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172 lines
8.7 KiB
C++
172 lines
8.7 KiB
C++
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/****************************************************************************
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This file is part of the GLC-lib library.
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Copyright (C) 2005-2008 Laurent Ribon (laumaya@users.sourceforge.net)
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Version 2.0.0, packaged on July 2010.
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http://glc-lib.sourceforge.net
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GLC-lib is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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GLC-lib is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with GLC-lib; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*****************************************************************************/
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//! \file glc_ext.cpp implementation of the GLC Opengl extension functions.
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#include "glc_ext.h"
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#include <QString>
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#include <QGLContext>
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#include <QDebug>
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#if !defined(Q_OS_MAC)
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// ARB_vertex_buffer_object
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PFNGLBINDBUFFERARBPROC glBindBuffer = NULL;
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PFNGLDELETEBUFFERSARBPROC glDeleteBuffers = NULL;
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PFNGLGENBUFFERSARBPROC glGenBuffers = NULL;
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PFNGLISBUFFERARBPROC glIsBuffer = NULL;
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PFNGLBUFFERDATAARBPROC glBufferData = NULL;
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PFNGLBUFFERSUBDATAARBPROC glBufferSubData = NULL;
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PFNGLGETBUFFERSUBDATAARBPROC glGetBufferSubData = NULL;
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PFNGLMAPBUFFERARBPROC glMapBuffer = NULL;
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PFNGLUNMAPBUFFERARBPROC glUnmapBuffer = NULL;
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PFNGLGETBUFFERPARAMETERIVARBPROC glGetBufferParameteriv = NULL;
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PFNGLGETBUFFERPOINTERVARBPROC glGetBufferPointerv = NULL;
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// glDrawRangElement
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//PFNGLDRAWRANGEELEMENTSPROC glDrawRangeElements = NULL;
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// glMultiDrawElement
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PFNGLMULTIDRAWELEMENTSPROC glMultiDrawElements = NULL;
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// GL_ARB_shader_objects
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PFNGLCREATEPROGRAMOBJECTARBPROC glCreateProgram = NULL;
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PFNGLDELETEPROGRAMPROC glDeleteProgram = NULL;
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PFNGLUSEPROGRAMOBJECTARBPROC glUseProgram = NULL;
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PFNGLCREATESHADEROBJECTARBPROC glCreateShader = NULL;
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PFNGLDELETESHADERPROC glDeleteShader = NULL;
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PFNGLSHADERSOURCEARBPROC glShaderSource = NULL;
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PFNGLCOMPILESHADERARBPROC glCompileShader = NULL;
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PFNGLATTACHOBJECTARBPROC glAttachShader = NULL;
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PFNGLDETACHOBJECTARBPROC glDetachShader = NULL;
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PFNGLLINKPROGRAMARBPROC glLinkProgram = NULL;
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PFNGLGETUNIFORMLOCATIONARBPROC glGetUniformLocation = NULL;
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PFNGLUNIFORM4FARBPROC glUniform4f = NULL;
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PFNGLUNIFORM1IARBPROC glUniform1i = NULL;
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PFNGLGETSHADERIVPROC glGetShaderiv = NULL;
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PFNGLGETPROGRAMIVARBPROC glGetProgramiv = NULL;
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PFNGLISPROGRAMARBPROC glIsProgram = NULL;
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// GL_point_parameters Point Sprite
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PFNGLPOINTPARAMETERFARBPROC glPointParameterf = NULL;
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PFNGLPOINTPARAMETERFVARBPROC glPointParameterfv = NULL;
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#endif
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//const QString glExtension(reinterpret_cast<const char*>(glGetString(GL_EXTENSIONS)));
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// Return true if the extension is supported
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bool glc::extensionIsSupported(const QString& extension)
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{
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QString glExtension(reinterpret_cast<const char*>(glGetString(GL_EXTENSIONS)));
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return glExtension.contains(extension);
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}
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// Return true if VBO extension is succesfully loaded
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bool glc::loadVboExtension()
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{
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bool result= true;
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#if !defined(Q_OS_MAC)
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const QGLContext* pContext= QGLContext::currentContext();
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glBindBuffer = (PFNGLBINDBUFFERARBPROC)pContext->getProcAddress(QLatin1String("glBindBuffer"));
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glDeleteBuffers = (PFNGLDELETEBUFFERSARBPROC)pContext->getProcAddress(QLatin1String("glDeleteBuffers"));
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glGenBuffers = (PFNGLGENBUFFERSARBPROC)pContext->getProcAddress(QLatin1String("glGenBuffers"));
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glIsBuffer = (PFNGLISBUFFERARBPROC)pContext->getProcAddress(QLatin1String("glIsBuffer"));
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glBufferData = (PFNGLBUFFERDATAARBPROC)pContext->getProcAddress(QLatin1String("glBufferData"));
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glBufferSubData = (PFNGLBUFFERSUBDATAARBPROC)pContext->getProcAddress(QLatin1String("glBufferSubData"));
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glGetBufferSubData = (PFNGLGETBUFFERSUBDATAARBPROC)pContext->getProcAddress(QLatin1String("glGetBufferSubData"));
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glMapBuffer = (PFNGLMAPBUFFERARBPROC)pContext->getProcAddress(QLatin1String("glMapBuffer"));
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glUnmapBuffer = (PFNGLUNMAPBUFFERARBPROC)pContext->getProcAddress(QLatin1String("glUnmapBuffer"));
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glGetBufferParameteriv = (PFNGLGETBUFFERPARAMETERIVARBPROC)pContext->getProcAddress(QLatin1String("glGetBufferParameteriv"));
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glGetBufferPointerv = (PFNGLGETBUFFERPOINTERVARBPROC)pContext->getProcAddress(QLatin1String("glGetBufferPointerv"));
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//glDrawRangeElements = (PFNGLDRAWRANGEELEMENTSPROC)pContext->getProcAddress(QLatin1String("glDrawRangeElements"));
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glMultiDrawElements = (PFNGLMULTIDRAWELEMENTSPROC)pContext->getProcAddress(QLatin1String("glMultiDrawElements"));
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result= glBindBuffer && glDeleteBuffers && glGenBuffers && glIsBuffer && glBufferData && glBufferSubData &&
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glGetBufferSubData && glMapBuffer && glUnmapBuffer && glGetBufferParameteriv && glGetBufferPointerv && glMultiDrawElements;// and glDrawRangeElements;
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#endif
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return result;
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}
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// Load GLSL extensions
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bool glc::loadGlSlExtension()
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{
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bool result= true;
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#if !defined(Q_OS_MAC)
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const QGLContext* pContext= QGLContext::currentContext();
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glCreateProgram = (PFNGLCREATEPROGRAMOBJECTARBPROC)pContext->getProcAddress(QLatin1String("glCreateProgram"));
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if (!glCreateProgram) qDebug() << "not glCreateProgram";
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glDeleteProgram = (PFNGLDELETEPROGRAMPROC)pContext->getProcAddress(QLatin1String("glDeleteProgram"));
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if (!glDeleteProgram) qDebug() << "not glDeleteProgram";
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glUseProgram = (PFNGLUSEPROGRAMOBJECTARBPROC)pContext->getProcAddress(QLatin1String("glUseProgram"));
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if (!glUseProgram) qDebug() << "not glUseProgram";
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glCreateShader = (PFNGLCREATESHADEROBJECTARBPROC)pContext->getProcAddress(QLatin1String("glCreateShader"));
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if (!glCreateShader) qDebug() << "not glCreateShader";
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glDeleteShader = (PFNGLDELETESHADERPROC)pContext->getProcAddress(QLatin1String("glDeleteShader"));
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if (!glDeleteShader) qDebug() << "not glDeleteShader";
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glShaderSource = (PFNGLSHADERSOURCEARBPROC)pContext->getProcAddress(QLatin1String("glShaderSource"));
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if (!glShaderSource) qDebug() << "not glShaderSource";
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glCompileShader = (PFNGLCOMPILESHADERARBPROC)pContext->getProcAddress(QLatin1String("glCompileShader"));
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if (!glCompileShader) qDebug() << "not glCompileShader";
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glAttachShader = (PFNGLATTACHOBJECTARBPROC)pContext->getProcAddress(QLatin1String("glAttachShader"));
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if (!glAttachShader) qDebug() << "not glAttachShader";
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glDetachShader = (PFNGLDETACHOBJECTARBPROC)pContext->getProcAddress(QLatin1String("glDetachShader"));
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if (!glDetachShader) qDebug() << "not glDetachShader";
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glLinkProgram = (PFNGLLINKPROGRAMARBPROC)pContext->getProcAddress(QLatin1String("glLinkProgram"));
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if (!glLinkProgram) qDebug() << "not glLinkProgram";
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glGetUniformLocation = (PFNGLGETUNIFORMLOCATIONARBPROC)pContext->getProcAddress(QLatin1String("glGetUniformLocation"));
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if (!glGetUniformLocation) qDebug() << "not glGetUniformLocation";
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glUniform4f = (PFNGLUNIFORM4FARBPROC)pContext->getProcAddress(QLatin1String("glUniform4f"));
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if (!glUniform4f) qDebug() << "not glUniform4f";
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glUniform1i = (PFNGLUNIFORM1IARBPROC)pContext->getProcAddress(QLatin1String("glUniform1i"));
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if (!glUniform1i) qDebug() << "not glUniform1i";
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glGetShaderiv = (PFNGLGETSHADERIVPROC)pContext->getProcAddress(QLatin1String("glGetShaderiv"));
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if (!glGetShaderiv) qDebug() << "not glGetShaderiv";
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glGetProgramiv = (PFNGLGETPROGRAMIVARBPROC)pContext->getProcAddress(QLatin1String("glGetProgramiv"));
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if (!glGetProgramiv) qDebug() << "not glGetProgramiv";
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glIsProgram = (PFNGLISPROGRAMARBPROC)pContext->getProcAddress(QLatin1String("glIsProgram"));
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result= glCreateProgram && glDeleteProgram && glUseProgram && glCreateShader && glDeleteShader &&
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glShaderSource && glCompileShader && glAttachShader && glDetachShader && glLinkProgram &&
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glGetUniformLocation && glUniform4f && glUniform1i && glGetShaderiv && glGetProgramiv && glIsProgram;
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#endif
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return result;
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}
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// Load Point Sprite extension
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bool glc::loadPointSpriteExtension()
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{
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bool result= true;
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#if !defined(Q_OS_MAC)
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const QGLContext* pContext= QGLContext::currentContext();
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glPointParameterf = (PFNGLPOINTPARAMETERFARBPROC)pContext->getProcAddress(QLatin1String("glPointParameterf"));
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if (!glPointParameterf) qDebug() << "not glPointParameterf";
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glPointParameterfv = (PFNGLPOINTPARAMETERFVARBPROC)pContext->getProcAddress(QLatin1String("glPointParameterfv"));
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if (!glPointParameterfv) qDebug() << "not glPointParameterfv";
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result= glPointParameterf && glPointParameterfv;
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#endif
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return result;
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}
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