FGFS-4.1/OpenSceneGraph
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Improved handling of invalid imagery in BufferObject

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This commit is contained in:
Robert Osfield
2005-04-22 15:43:34 +00:00
parent af70cd8801
commit 2914f7c342
2 changed files with 15 additions and 7 deletions
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18
src/osg/BufferObject.cpp
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@@ -323,23 +323,28 @@ void PixelBufferObject::compileBuffer(State& state) const
unsigned int contextID = state.getContextID();
if (!needsCompile(contextID)) return;
Extensions* extensions = getExtensions(contextID,true);
osg::Image* image = _bufferEntryImagePair.second;
_bufferEntryImagePair.first.modifiedCount[contextID] = image->getModifiedCount();
if (!image->valid()) return;
Extensions* extensions = getExtensions(contextID,true);
GLuint& pbo = buffer(contextID);
if (pbo==0)
{
// building for the first time.
extensions->glGenBuffers(1, &pbo);
extensions->glBindBuffer(_target, pbo);
_totalSize = image->getTotalSizeInBytes();
// don't generate buffer if size is zero.
if (_totalSize==0) return;
extensions->glGenBuffers(1, &pbo);
extensions->glBindBuffer(_target, pbo);
extensions->glBufferData(_target, _totalSize, NULL,
_usage);
}
else
{
@@ -347,6 +352,7 @@ void PixelBufferObject::compileBuffer(State& state) const
if (_totalSize != image->getTotalSizeInBytes())
{
_totalSize = image->getTotalSizeInBytes();
extensions->glBufferData(_target, _totalSize, NULL,
_usage);