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From Romano José Magacho da Silva, extension checking for NV_occlusion_query extension.

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This commit is contained in:
Robert Osfield
2003-07-23 20:53:53 +00:00
parent 27c4dc0920
commit 8bd3e9f1b2
2 changed files with 141 additions and 2 deletions
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112
src/osg/Drawable.cpp
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@@ -470,6 +470,7 @@ Drawable::Extensions::Extensions(const Extensions& rhs):
_isSecondaryColorSupported = rhs._isSecondaryColorSupported;
_isFogCoordSupported = rhs._isFogCoordSupported;
_isMultiTexSupported = rhs._isMultiTexSupported;
_isOcclusionQuerySupported = rhs._isOcclusionQuerySupported;
_glFogCoordfv = rhs._glFogCoordfv;
_glSecondaryColor3ubv = rhs._glSecondaryColor3ubv;
_glSecondaryColor3fv = rhs._glSecondaryColor3fv;
@@ -489,6 +490,13 @@ Drawable::Extensions::Extensions(const Extensions& rhs):
_glBufferData = rhs._glBufferData;
_glBufferSubData = rhs._glBufferSubData;
_glDeleteBuffers = rhs._glDeleteBuffers;
_glGenOcclusionQueries = rhs._glGenOcclusionQueries;
_glDeleteOcclusionQueries = rhs._glDeleteOcclusionQueries;
_glIsOcclusionQuery = rhs._glIsOcclusionQuery;
_glBeginOcclusionQuery = rhs._glBeginOcclusionQuery;
_glEndOcclusionQuery = rhs._glEndOcclusionQuery;
_glGetOcclusionQueryiv = rhs._glGetOcclusionQueryiv;
_glGetOcclusionQueryuiv = rhs._glGetOcclusionQueryuiv;
}
@@ -498,6 +506,7 @@ void Drawable::Extensions::lowestCommonDenominator(const Extensions& rhs)
if (!rhs._isSecondaryColorSupported) _isSecondaryColorSupported = false;
if (!rhs._isFogCoordSupported) _isFogCoordSupported = false;
if (!rhs._isMultiTexSupported) _isMultiTexSupported = false;
if (!rhs._isOcclusionQuerySupported) _isOcclusionQuerySupported = false;
if (!rhs._glFogCoordfv) _glFogCoordfv = 0;
if (!rhs._glSecondaryColor3ubv) _glSecondaryColor3ubv = 0;
@@ -520,6 +529,14 @@ void Drawable::Extensions::lowestCommonDenominator(const Extensions& rhs)
if (!rhs._glBufferData) _glBufferData = 0;
if (!rhs._glBufferSubData) _glBufferSubData = 0;
if (!rhs._glDeleteBuffers) _glDeleteBuffers = 0;
if (!rhs._glGenOcclusionQueries) _glGenOcclusionQueries = 0;
if (!rhs._glDeleteOcclusionQueries) _glDeleteOcclusionQueries = 0;
if (!rhs._glIsOcclusionQuery) _glIsOcclusionQuery = 0;
if (!rhs._glBeginOcclusionQuery) _glBeginOcclusionQuery = 0;
if (!rhs._glEndOcclusionQuery) _glEndOcclusionQuery = 0;
if (!rhs._glGetOcclusionQueryiv) _glGetOcclusionQueryiv = 0;
if (!rhs._glGetOcclusionQueryuiv) _glGetOcclusionQueryuiv = 0;
}
void Drawable::Extensions::setupGLExtenions()
@@ -528,6 +545,7 @@ void Drawable::Extensions::setupGLExtenions()
_isSecondaryColorSupported = isGLExtensionSupported("GL_EXT_secondary_color");
_isFogCoordSupported = isGLExtensionSupported("GL_EXT_fog_coord");
_isMultiTexSupported = isGLExtensionSupported("GL_ARB_multitexture");
_isOcclusionQuerySupported = osg::isGLExtensionSupported( "GL_NV_occlusion_query" );
_glFogCoordfv = ((FogCoordProc)osg::getGLExtensionFuncPtr("glFogCoordfv","glFogCoordfvEXT"));
_glSecondaryColor3ubv = ((SecondaryColor3ubvProc)osg::getGLExtensionFuncPtr("glSecondaryColor3ubv","glSecondaryColor3ubvEXT"));
@@ -551,7 +569,15 @@ void Drawable::Extensions::setupGLExtenions()
_glBufferSubData = ((BufferSubDataProc)osg::getGLExtensionFuncPtr("glBufferSubData","glBufferSubDataARB"));
_glDeleteBuffers = ((DeleteBuffersProc)osg::getGLExtensionFuncPtr("glDeleteBuffers","glDeleteBuffersARB"));
_glGenOcclusionQueries = ((GenOcclusionQueriesProc)osg::getGLExtensionFuncPtr("glGenOcclusionQueries","glGenOcclusionQueriesNV"));
_glDeleteOcclusionQueries = ((DeleteOcclusionQueriesProc)osg::getGLExtensionFuncPtr("glDeleteOcclusionQueries","glDeleteOcclusionQueriesNV"));
_glIsOcclusionQuery = ((IsOcclusionQueryProc)osg::getGLExtensionFuncPtr("glIsOcclusionQuery","_glIsOcclusionQueryNV"));
_glBeginOcclusionQuery = ((BeginOcclusionQueryProc)osg::getGLExtensionFuncPtr("glBeginOcclusionQuery","glBeginOcclusionQueryNV"));
_glEndOcclusionQuery = ((EndOcclusionQueryProc)osg::getGLExtensionFuncPtr("glEndOcclusionQuery","glEndOcclusionQueryNV"));
_glGetOcclusionQueryiv = ((GetOcclusionQueryivProc)osg::getGLExtensionFuncPtr("glGetOcclusionQueryiv","glGetOcclusionQueryivNV"));
_glGetOcclusionQueryuiv = ((GetOcclusionQueryuivProc)osg::getGLExtensionFuncPtr("glGetOcclusionQueryuiv","glGetOcclusionQueryuivNV"));
}
void Drawable::Extensions::glFogCoordfv(const GLfloat* coord) const
{
if (_glFogCoordfv)
@@ -779,3 +805,89 @@ void Drawable::Extensions::glDeleteBuffers(GLsizei n, const GLuint *buffers) con
notify(WARN)<<"Error: glBufferData not supported by OpenGL driver"<<std::endl;
}
}
void Drawable::Extensions::glGenOcclusionQueries( GLsizei n, GLuint *ids ) const
{
if (_glGenOcclusionQueries)
{
_glGenOcclusionQueries( n, ids );
}
else
{
osg::notify(osg::WARN)<<"Error: glGenOcclusionQueries not supported by OpenGL driver"<<std::endl;
}
}
void Drawable::Extensions::glDeleteOcclusionQueries( GLsizei n, const GLuint *ids ) const
{
if (_glDeleteOcclusionQueries)
{
_glDeleteOcclusionQueries( n, ids );
}
else
{
osg::notify(osg::WARN)<<"Error: glDeleteOcclusionQueries not supported by OpenGL driver"<<std::endl;
}
}
GLboolean Drawable::Extensions::glIsOcclusionQuery( GLuint id ) const
{
if (_glIsOcclusionQuery)
{
return _glIsOcclusionQuery( id );
}
else
{
osg::notify(osg::WARN)<<"Error: glIsOcclusionQuery not supported by OpenGL driver"<<std::endl;
}
return GLboolean( 0 );
}
void Drawable::Extensions::glBeginOcclusionQuery( GLuint id ) const
{
if (_glBeginOcclusionQuery)
{
_glBeginOcclusionQuery( id );
}
else
{
osg::notify(osg::WARN)<<"Error: glBeginOcclusionQuery not supported by OpenGL driver"<<std::endl;
}
}
void Drawable::Extensions::glEndOcclusionQuery() const
{
if (_glEndOcclusionQuery)
{
_glEndOcclusionQuery();
}
else
{
osg::notify(osg::WARN)<<"Error: glEndOcclusionQuery not supported by OpenGL driver"<<std::endl;
}
}
void Drawable::Extensions::glGetOcclusionQueryiv( GLuint id, GLenum pname, GLint *params ) const
{
if (_glGetOcclusionQueryiv)
{
_glGetOcclusionQueryiv( id, pname, params );
}
else
{
osg::notify(osg::WARN)<<"Error: glGetOcclusionQueryiv not supported by OpenGL driver"<<std::endl;
}
}
void Drawable::Extensions::glGetOcclusionQueryuiv( GLuint id, GLenum pname, GLuint *params ) const
{
if (_glGetOcclusionQueryuiv)
{
_glGetOcclusionQueryuiv( id, pname, params );
}
else
{
osg::notify(osg::WARN)<<"Error: glGetOcclusionQueryuiv not supported by OpenGL driver"<<std::endl;
}
}