FGFS-4.1/OpenSceneGraph
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Merged changed from svn/trunk, improving the reliability of the clear of the stencil and depth buffer.

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This commit is contained in:
Robert Osfield
2009-05-18 15:49:19 +00:00
parent 0c345e76d4
commit 62f5a4d3bc
1 changed files with 14 additions and 7 deletions
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21
src/osgUtil/RenderStage.cpp
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@@ -1202,17 +1202,12 @@ void RenderStage::drawImplementation(osg::RenderInfo& renderInfo,RenderLeaf*& pr
// set up the back buffer.
state.applyAttribute(_viewport.get());
#define USE_SISSOR_TEST
#ifdef USE_SISSOR_TEST
glScissor( static_cast<int>(_viewport->x()),
static_cast<int>(_viewport->y()),
static_cast<int>(_viewport->width()),
static_cast<int>(_viewport->height()) );
//cout << " clearing "<<this<< " "<<_viewport->x()<<","<< _viewport->y()<<","<< _viewport->width()<<","<< _viewport->height()<<std::endl;
glEnable( GL_SCISSOR_TEST );
#endif
state.applyMode( GL_SCISSOR_TEST, true );
// glEnable( GL_DEPTH_TEST );
@@ -1221,21 +1216,33 @@ void RenderStage::drawImplementation(osg::RenderInfo& renderInfo,RenderLeaf*& pr
else glColorMask(GL_TRUE,GL_TRUE,GL_TRUE,GL_TRUE);
if (_clearMask & GL_COLOR_BUFFER_BIT)
{
glClearColor( _clearColor[0], _clearColor[1], _clearColor[2], _clearColor[3]);
}
if (_clearMask & GL_DEPTH_BUFFER_BIT)
{
glClearDepth( _clearDepth);
glDepthMask ( GL_TRUE );
state.haveAppliedAttribute( osg::StateAttribute::DEPTH );
}
if (_clearMask & GL_STENCIL_BUFFER_BIT)
{
glClearStencil( _clearStencil);
glStencilMask ( GL_TRUE );
state.haveAppliedAttribute( osg::StateAttribute::STENCIL );
}
if (_clearMask & GL_ACCUM_BUFFER_BIT)
{
glClearAccum( _clearAccum[0], _clearAccum[1], _clearAccum[2], _clearAccum[3]);
}
glClear( _clearMask );
#ifdef USE_SISSOR_TEST
#ifdef USE_SCISSOR_TEST
glDisable( GL_SCISSOR_TEST );
#endif