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From Marco Jez, added example that uses FBO extension to do prerendering.

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This commit is contained in:
Robert Osfield
2005-06-09 11:08:37 +00:00
parent 96eb0b71c6
commit 5c86ecebe4
12 changed files with 894 additions and 0 deletions
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38
examples/osgfbo/FBOExtensions.cpp Normal file
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#include "FBOExtensions.h"
#include <osg/GLExtensions>
using namespace osg;
#define LOAD_FBO_EXT(name) name = (T##name *)getGLExtensionFuncPtr(#name);
FBOExtensions::FBOExtensions(unsigned int contextID)
: _supported(false)
{
if (!isGLExtensionSupported(contextID, "GL_EXT_framebuffer_object"))
return;
LOAD_FBO_EXT(glBindRenderbufferEXT);
LOAD_FBO_EXT(glGenRenderbuffersEXT);
LOAD_FBO_EXT(glRenderbufferStorageEXT);
LOAD_FBO_EXT(glBindFramebufferEXT);
LOAD_FBO_EXT(glGenFramebuffersEXT);
LOAD_FBO_EXT(glCheckFramebufferStatusEXT);
LOAD_FBO_EXT(glFramebufferTexture1DEXT);
LOAD_FBO_EXT(glFramebufferTexture2DEXT);
LOAD_FBO_EXT(glFramebufferTexture3DEXT);
LOAD_FBO_EXT(glFramebufferRenderbufferEXT);
LOAD_FBO_EXT(glGenerateMipmapEXT);
_supported =
glBindRenderbufferEXT != 0 &&
glGenRenderbuffersEXT != 0 &&
glRenderbufferStorageEXT != 0 &&
glBindFramebufferEXT != 0 &&
glGenFramebuffersEXT != 0 &&
glCheckFramebufferStatusEXT != 0 &&
glFramebufferTexture1DEXT != 0 &&
glFramebufferTexture2DEXT != 0 &&
glFramebufferTexture3DEXT != 0 &&
glFramebufferRenderbufferEXT != 0 &&
glGenerateMipmapEXT != 0;
}