FGFS-4.1/OpenSceneGraph
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Further work on multiple context extensions.

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This commit is contained in:
Robert Osfield
2002-09-16 20:58:05 +00:00
parent f006d081e5
commit 91df37b5c8
9 changed files with 272 additions and 89 deletions
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47
src/osg/TextureCubeMap.cpp
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@@ -177,15 +177,13 @@ void TextureCubeMap::computeInternalFormat() const
void TextureCubeMap::apply(State& state) const
{
static bool s_CubeMapSupported = isGLExtensionSupported("GL_ARB_texture_cube_map") ||
isGLExtensionSupported("GL_EXT_texture_cube_map");
if (!s_CubeMapSupported)
return;
// get the contextID (user defined ID of 0 upwards) for the
// current OpenGL context.
const uint contextID = state.getContextID();
const Extensions* extensions = getExtensions(contextID,true);
if (!extensions->isCubeMapSupported())
return;
// get the globj for the current contextID.
GLuint& handle = getTextureObject(contextID);
@@ -244,3 +242,40 @@ void TextureCubeMap::apply(State& state) const
glBindTexture( GL_TEXTURE_CUBE_MAP, 0 );
}
}
typedef buffered_value< ref_ptr<TextureCubeMap::Extensions> > BufferedExtensions;
static BufferedExtensions s_extensions;
const TextureCubeMap::Extensions* TextureCubeMap::getExtensions(uint contextID,bool createIfNotInitalized)
{
if (!s_extensions[contextID] && createIfNotInitalized) s_extensions[contextID] = new Extensions;
return s_extensions[contextID].get();
}
void TextureCubeMap::setExtensions(uint contextID,Extensions* extensions)
{
s_extensions[contextID] = extensions;
}
TextureCubeMap::Extensions::Extensions()
{
setupGLExtenions();
}
TextureCubeMap::Extensions::Extensions(const Extensions& rhs):
Referenced()
{
_isCubeMapSupported = rhs._isCubeMapSupported;
}
void TextureCubeMap::Extensions::lowestCommonDenominator(const Extensions& rhs)
{
if (!rhs._isCubeMapSupported) _isCubeMapSupported = false;
}
void TextureCubeMap::Extensions::setupGLExtenions()
{
_isCubeMapSupported = isGLExtensionSupported("GL_ARB_texture_cube_map") ||
isGLExtensionSupported("GL_EXT_texture_cube_map") ||
strncmp((const char*)glGetString(GL_VERSION),"1.3",3)>=0;;
}